The patch set initial support for Cadence MHDP8501(HDMI/DP) DRM bridge
drivers and Cadence HDP-TX PHY(HDMI/DP) drivers for Freescale i.MX8MQ.
The patch set compose of DRM bridge drivers and PHY drivers.
Both of them need the followed two patches to pass build.
drm: bridge: Cadence: convert mailbox functions to macro functions
phy: Add HDMI configuration options
DRM bridges driver patches:
dt-bindings: display: bridge: Add Cadence MHDP8501 HDMI and DP
drm: bridge: Cadence: Add MHDP8501 DP driver
drm: bridge: Cadence: Add MHDP8501 HDMI driver
PHY driver patches:
dt-bindings: phy: Add Freescale iMX8MQ DP and HDMI PHY
phy: freescale: Add DisplayPort PHY driver for i.MX8MQ
phy: freescale: Add HDMI PHY driver for i.MX8MQ
v5->v6:
HDMI/DP bridge driver
- 8501 is the part number of Cadence MHDP on i.MX8MQ.
Use MHDP8501 to name hdmi/dp drivers and files.
- Add compatible "fsl,imx8mq-mhdp8501-dp" for i.MX8MQ DP driver
- Add compatible "fsl,imx8mq-mhdp8501-hdmi" for i.MX8MQ HDMI driver
- Combine HDMI and DP dt-bindings into one file cdns,mhdp8501.yaml
- Fix HDMI scrambling is not enable issue when driver working in 4Kp60
mode.
- Add HDMI/DP PHY API mailbox protect.
HDMI/DP PHY driver:
- Rename DP and HDMI PHY files and move to folder phy/freescale/
- Remove properties num_lanes and link_rate from DP PHY driver.
- Combine HDMI and DP dt-bindings into one file fsl,imx8mq-dp-hdmi-phy.yaml
- Update compatible string to "fsl,imx8mq-dp-phy".
- Update compatible string to "fsl,imx8mq-hdmi-phy".
v4->v5:
- Drop "clk" suffix in clock name.
- Add output port property in the example of hdmi/dp.
v3->v4:
dt-bindings:
- Correct dt-bindings coding style and address review comments.
- Add apb_clk description.
- Add output port for HDMI/DP connector
PHY:
- Alphabetically sorted in Kconfig and Makefile for DP and HDMI PHY
- Remove unused registers define from HDMI and DP PHY drivers.
- More description in phy_hdmi.h.
- Add apb_clk to HDMI and DP phy driver.
HDMI/DP:
- Use get_unaligned_le32() to replace hardcode type conversion
in HDMI AVI infoframe data fill function.
- Add mailbox mutex lock in HDMI/DP driver for phy functions
to reslove race conditions between HDMI/DP and PHY drivers.
- Add apb_clk to both HDMI and DP driver.
- Rename some function names and add prefix with "cdns_hdmi/cdns_dp".
- Remove bpc 12 and 16 optional that not supported.
v2->v3:
Address comments for dt-bindings files.
- Correct dts-bindings file names
Rename phy-cadence-hdptx-dp.yaml to cdns,mhdp-imx8mq-dp.yaml
Rename phy-cadence-hdptx-hdmi.yaml to cdns,mhdp-imx8mq-hdmi.yaml
- Drop redundant words and descriptions.
- Correct hdmi/dp node name.
v2 is a completely different version compared to v1.
Previous v1 can be available here [1].
v1->v2:
- Reuse Cadence mailbox access functions from mhdp8546 instead of
rockchip DP.
- Mailbox access functions be convert to marco functions
that will be referenced by HDP-TX PHY(HDMI/DP) driver too.
- Plain bridge instead of component driver.
- Standalone Cadence HDP-TX PHY(HDMI/DP) driver.
- Audio driver are removed from the patch set, it will be add in another
patch set later.
[1] https://patchwork.kernel.org/project/linux-rockchip/cover/[email protected]/
Sandor Yu (8):
drm: bridge: Cadence: convert mailbox functions to macro functions
dt-bindings: display: bridge: Add Cadence MHDP8501 HDMI and DP
drm: bridge: Cadence: Add MHDP8501 DP driver
phy: Add HDMI configuration options
drm: bridge: Cadence: Add MHDP8501 HDMI driver
dt-bindings: phy: Add Freescale iMX8MQ DP and HDMI PHY
phy: freescale: Add DisplayPort PHY driver for i.MX8MQ
phy: freescale: Add HDMI PHY driver for i.MX8MQ
.../display/bridge/cdns,mhdp8501.yaml | 105 ++
.../bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml | 53 +
drivers/gpu/drm/bridge/cadence/Kconfig | 25 +
drivers/gpu/drm/bridge/cadence/Makefile | 3 +
.../gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c | 1078 +++++++++++++++++
.../drm/bridge/cadence/cdns-mhdp8501-hdmi.c | 1024 ++++++++++++++++
.../gpu/drm/bridge/cadence/cdns-mhdp8501.h | 399 ++++++
.../drm/bridge/cadence/cdns-mhdp8546-core.c | 195 +--
.../drm/bridge/cadence/cdns-mhdp8546-core.h | 1 -
drivers/phy/freescale/Kconfig | 18 +
drivers/phy/freescale/Makefile | 2 +
drivers/phy/freescale/phy-fsl-imx8mq-dp.c | 697 +++++++++++
drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c | 889 ++++++++++++++
include/drm/bridge/cdns-mhdp-mailbox.h | 240 ++++
include/linux/phy/phy-hdmi.h | 38 +
include/linux/phy/phy.h | 7 +-
16 files changed, 4578 insertions(+), 196 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
create mode 100644 Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c
create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501.h
create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-dp.c
create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
create mode 100644 include/drm/bridge/cdns-mhdp-mailbox.h
create mode 100644 include/linux/phy/phy-hdmi.h
--
2.34.1
Add Cadence HDP-TX HDMI PHY driver for i.MX8MQ.
Cadence HDP-TX PHY could be put in either DP mode or
HDMI mode base on the configuration chosen.
HDMI PHY mode is configurated in the driver.
Signed-off-by: Sandor Yu <[email protected]>
---
drivers/phy/freescale/Kconfig | 9 +
drivers/phy/freescale/Makefile | 1 +
drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c | 889 ++++++++++++++++++++
3 files changed, 899 insertions(+)
create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig
index a99ee370eda6..e007e15e503a 100644
--- a/drivers/phy/freescale/Kconfig
+++ b/drivers/phy/freescale/Kconfig
@@ -44,6 +44,15 @@ config PHY_CADENCE_DP_PHY
Enable this to support the Cadence HDPTX DP PHY driver
on NXP's i.MX8MQ SOC.
+config PHY_CADENCE_HDMI_PHY
+ tristate "Cadence HDPTX HDMI PHY Driver"
+ depends on OF && HAS_IOMEM
+ depends on COMMON_CLK
+ select GENERIC_PHY
+ help
+ Enable this to support the Cadence HDPTX HDMI PHY driver.
+ on NXP's i.MX8MQ SOC.
+
endif
config PHY_FSL_LYNX_28G
diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile
index c3bdf3fa2e72..d25fafd91c53 100644
--- a/drivers/phy/freescale/Makefile
+++ b/drivers/phy/freescale/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o
obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o
obj-$(CONFIG_PHY_FSL_LYNX_28G) += phy-fsl-lynx-28g.o
obj-$(CONFIG_PHY_CADENCE_DP_PHY) += phy-fsl-imx8mq-dp.o
+obj-$(CONFIG_PHY_CADENCE_HDMI_PHY) += phy-fsl-imx8mq-hdmi.o
diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c b/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
new file mode 100644
index 000000000000..65aeb9835bb9
--- /dev/null
+++ b/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
@@ -0,0 +1,889 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Cadence High-Definition Multimedia Interface (HDMI) PHY driver
+ *
+ * Copyright (C) 2022 NXP Semiconductor, Inc.
+ */
+#include <asm/unaligned.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <drm/bridge/cdns-mhdp-mailbox.h>
+
+#define ADDR_PHY_AFE 0x80000
+/* PHY registers */
+#define CMN_SSM_BIAS_TMR 0x0022
+#define CMN_PLLSM0_USER_DEF_CTRL 0x002F
+#define CMN_PSM_CLK_CTRL 0x0061
+#define CMN_CDIAG_REFCLK_CTRL 0x0062
+#define CMN_PLL0_VCOCAL_START 0x0081
+#define CMN_PLL0_VCOCAL_INIT_TMR 0x0084
+#define CMN_PLL0_VCOCAL_ITER_TMR 0x0085
+#define CMN_TXPUCAL_CTRL 0x00E0
+#define CMN_TXPDCAL_CTRL 0x00F0
+#define CMN_TXPU_ADJ_CTRL 0x0108
+#define CMN_TXPD_ADJ_CTRL 0x010c
+#define CMN_DIAG_PLL0_FBH_OVRD 0x01C0
+#define CMN_DIAG_PLL0_FBL_OVRD 0x01C1
+#define CMN_DIAG_PLL0_OVRD 0x01C2
+#define CMN_DIAG_PLL0_TEST_MODE 0x01C4
+#define CMN_DIAG_PLL0_V2I_TUNE 0x01C5
+#define CMN_DIAG_PLL0_CP_TUNE 0x01C6
+#define CMN_DIAG_PLL0_LF_PROG 0x01C7
+#define CMN_DIAG_PLL0_PTATIS_TUNE1 0x01C8
+#define CMN_DIAG_PLL0_PTATIS_TUNE2 0x01C9
+#define CMN_DIAG_PLL0_INCLK_CTRL 0x01CA
+#define CMN_DIAG_PLL0_PXL_DIVH 0x01CB
+#define CMN_DIAG_PLL0_PXL_DIVL 0x01CC
+#define CMN_DIAG_HSCLK_SEL 0x01E0
+#define XCVR_PSM_RCTRL 0x4001
+#define TX_TXCC_CAL_SCLR_MULT_0 0x4047
+#define TX_TXCC_CPOST_MULT_00_0 0x404C
+#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
+#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
+#define XCVR_DIAG_HSCLK_SEL 0x40E1
+#define XCVR_DIAG_BIDI_CTRL 0x40E8
+#define TX_PSC_A0 0x4100
+#define TX_PSC_A1 0x4101
+#define TX_PSC_A2 0x4102
+#define TX_PSC_A3 0x4103
+#define TX_DIAG_TX_CTRL 0x41E0
+#define TX_DIAG_TX_DRV 0x41E1
+#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
+#define TX_DIAG_ACYA_0 0x41FF
+#define TX_DIAG_ACYA_1 0x43FF
+#define TX_DIAG_ACYA_2 0x45FF
+#define TX_DIAG_ACYA_3 0x47FF
+#define TX_ANA_CTRL_REG_1 0x5020
+#define TX_ANA_CTRL_REG_2 0x5021
+#define TX_DIG_CTRL_REG_2 0x5024
+#define TXDA_CYA_AUXDA_CYA 0x5025
+#define TX_ANA_CTRL_REG_3 0x5026
+#define TX_ANA_CTRL_REG_4 0x5027
+#define TX_ANA_CTRL_REG_5 0x5029
+#define RX_PSC_A0 0x8000
+#define RX_PSC_CAL 0x8006
+#define PHY_HDP_MODE_CTRL 0xC008
+#define PHY_HDP_CLK_CTL 0xC009
+#define PHY_ISO_CMN_CTRL 0xC010
+#define PHY_PMA_CMN_CTRL1 0xC800
+#define PHY_PMA_ISO_CMN_CTRL 0xC810
+#define PHY_PMA_ISO_PLL_CTRL1 0xC812
+#define PHY_PMA_ISOLATION_CTRL 0xC81F
+
+#define REF_CLK_27MHZ 27000000
+
+/* HDMI TX clock control settings */
+struct hdptx_hdmi_ctrl {
+ u32 pixel_clk_freq_min;
+ u32 pixel_clk_freq_max;
+ u32 feedback_factor;
+ u32 data_range_kbps_min;
+ u32 data_range_kbps_max;
+ u32 cmnda_pll0_ip_div;
+ u32 cmn_ref_clk_dig_div;
+ u32 ref_clk_divider_scaler;
+ u32 pll_fb_div_total;
+ u32 cmnda_pll0_fb_div_low;
+ u32 cmnda_pll0_fb_div_high;
+ u32 pixel_div_total;
+ u32 cmnda_pll0_pxdiv_low;
+ u32 cmnda_pll0_pxdiv_high;
+ u32 vco_freq_min;
+ u32 vco_freq_max;
+ u32 vco_ring_select;
+ u32 cmnda_hs_clk_0_sel;
+ u32 cmnda_hs_clk_1_sel;
+ u32 hsclk_div_at_xcvr;
+ u32 hsclk_div_tx_sub_rate;
+ u32 cmnda_pll0_hs_sym_div_sel;
+ u32 cmnda_pll0_clk_freq_min;
+ u32 cmnda_pll0_clk_freq_max;
+};
+
+struct cdns_hdptx_hdmi_phy {
+ void __iomem *regs; /* DPTX registers base */
+ struct mutex mbox_mutex; /* mutex to protect mailbox */
+ struct device *dev;
+ struct phy *phy;
+ struct clk *ref_clk, *apb_clk;
+ u32 ref_clk_rate;
+ u32 pixel_clk_rate;
+ enum hdmi_phy_colorspace color_space;
+ u32 bpc;
+};
+
+/* HDMI TX clock control settings, pixel clock is output */
+static const struct hdptx_hdmi_ctrl pixel_clk_output_ctrl_table[] = {
+/*Minclk Maxclk Fdbak DR_min DR_max ip_d dig DS Totl */
+{ 27000, 27000, 1000, 270000, 270000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x3, 27000, 27000},
+{ 27000, 27000, 1250, 337500, 337500, 0x03, 0x1, 0x1, 300, 0x0EC, 0x03C, 100, 0x030, 0x030, 2700000, 2700000, 0, 2, 2, 2, 4, 0x3, 33750, 33750},
+{ 27000, 27000, 1500, 405000, 405000, 0x03, 0x1, 0x1, 360, 0x11C, 0x048, 120, 0x03A, 0x03A, 3240000, 3240000, 0, 2, 2, 2, 4, 0x3, 40500, 40500},
+{ 27000, 27000, 2000, 540000, 540000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x2, 54000, 54000},
+{ 54000, 54000, 1000, 540000, 540000, 0x03, 0x1, 0x1, 480, 0x17C, 0x060, 80, 0x026, 0x026, 4320000, 4320000, 1, 2, 2, 2, 4, 0x3, 54000, 54000},
+{ 54000, 54000, 1250, 675000, 675000, 0x04, 0x1, 0x1, 400, 0x13C, 0x050, 50, 0x017, 0x017, 2700000, 2700000, 0, 1, 1, 2, 4, 0x2, 67500, 67500},
+{ 54000, 54000, 1500, 810000, 810000, 0x04, 0x1, 0x1, 480, 0x17C, 0x060, 60, 0x01C, 0x01C, 3240000, 3240000, 0, 2, 2, 2, 2, 0x2, 81000, 81000},
+{ 54000, 54000, 2000, 1080000, 1080000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 40, 0x012, 0x012, 2160000, 2160000, 0, 2, 2, 2, 1, 0x1, 108000, 108000},
+{ 74250, 74250, 1000, 742500, 742500, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 80, 0x026, 0x026, 5940000, 5940000, 1, 2, 2, 2, 4, 0x3, 74250, 74250},
+{ 74250, 74250, 1250, 928125, 928125, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 50, 0x017, 0x017, 3712500, 3712500, 1, 1, 1, 2, 4, 0x2, 92812, 92812},
+{ 74250, 74250, 1500, 1113750, 1113750, 0x04, 0x1, 0x1, 660, 0x20C, 0x084, 60, 0x01C, 0x01C, 4455000, 4455000, 1, 2, 2, 2, 2, 0x2, 111375, 111375},
+{ 74250, 74250, 2000, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 40, 0x012, 0x012, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1, 148500, 148500},
+{ 99000, 99000, 1000, 990000, 990000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2, 2, 2, 2, 0x2, 99000, 99000},
+{ 99000, 99000, 1250, 1237500, 1237500, 0x03, 0x1, 0x1, 275, 0x0D8, 0x037, 25, 0x00B, 0x00A, 2475000, 2475000, 0, 1, 1, 2, 2, 0x1, 123750, 123750},
+{ 99000, 99000, 1500, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 30, 0x00D, 0x00D, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1, 148500, 148500},
+{ 99000, 99000, 2000, 1980000, 1980000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2, 2, 2, 1, 0x1, 198000, 198000},
+{148500, 148500, 1000, 1485000, 1485000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 40, 0x012, 0x012, 5940000, 5940000, 1, 2, 2, 2, 2, 0x2, 148500, 148500},
+{148500, 148500, 1250, 1856250, 1856250, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 25, 0x00B, 0x00A, 3712500, 3712500, 1, 1, 1, 2, 2, 0x1, 185625, 185625},
+{148500, 148500, 1500, 2227500, 2227500, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 30, 0x00D, 0x00D, 4455000, 4455000, 1, 1, 1, 2, 2, 0x1, 222750, 222750},
+{148500, 148500, 2000, 2970000, 2970000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 40, 0x012, 0x012, 5940000, 5940000, 1, 2, 2, 2, 1, 0x1, 297000, 297000},
+{198000, 198000, 1000, 1980000, 1980000, 0x03, 0x1, 0x1, 220, 0x0AC, 0x02C, 10, 0x003, 0x003, 1980000, 1980000, 0, 1, 1, 2, 1, 0x0, 198000, 198000},
+{198000, 198000, 1250, 2475000, 2475000, 0x03, 0x1, 0x1, 550, 0x1B4, 0x06E, 25, 0x00B, 0x00A, 4950000, 4950000, 1, 1, 1, 2, 2, 0x1, 247500, 247500},
+{198000, 198000, 1500, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 15, 0x006, 0x005, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000, 297000},
+{198000, 198000, 2000, 3960000, 3960000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 20, 0x008, 0x008, 3960000, 3960000, 1, 1, 1, 2, 1, 0x0, 396000, 396000},
+{297000, 297000, 1000, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 10, 0x003, 0x003, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000, 297000},
+{297000, 297000, 1500, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 15, 0x006, 0x005, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0, 445500, 445500},
+{297000, 297000, 2000, 5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 20, 0x008, 0x008, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
+{594000, 594000, 1000, 5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 10, 0x003, 0x003, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
+{594000, 594000, 750, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 10, 0x003, 0x003, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0, 445500, 445500},
+{594000, 594000, 625, 3712500, 3712500, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 10, 0x003, 0x003, 3712500, 3712500, 1, 1, 1, 2, 1, 0x0, 371250, 371250},
+{594000, 594000, 500, 2970000, 2970000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 10, 0x003, 0x003, 5940000, 5940000, 1, 1, 1, 2, 2, 0x1, 297000, 297000},
+};
+
+/* HDMI TX PLL tuning settings */
+struct hdptx_hdmi_pll_tuning {
+ u32 vco_freq_bin;
+ u32 vco_freq_min;
+ u32 vco_freq_max;
+ u32 volt_to_current_coarse;
+ u32 volt_to_current;
+ u32 ndac_ctrl;
+ u32 pmos_ctrl;
+ u32 ptat_ndac_ctrl;
+ u32 feedback_div_total;
+ u32 charge_pump_gain;
+ u32 coarse_code;
+ u32 v2i_code;
+ u32 vco_cal_code;
+};
+
+/* HDMI TX PLL tuning settings, pixel clock is output */
+static const struct hdptx_hdmi_pll_tuning pixel_clk_output_pll_table[] = {
+/*bin VCO_freq min/max coar cod NDAC PMOS PTAT div-T P-Gain Coa V2I CAL */
+{ 1, 1980000, 1980000, 0x4, 0x3, 0x0, 0x09, 0x09, 220, 0x42, 160, 5, 183 },
+{ 2, 2160000, 2160000, 0x4, 0x3, 0x0, 0x09, 0x09, 240, 0x42, 166, 6, 208 },
+{ 3, 2475000, 2475000, 0x5, 0x3, 0x1, 0x00, 0x07, 275, 0x42, 167, 6, 209 },
+{ 4, 2700000, 2700000, 0x5, 0x3, 0x1, 0x00, 0x07, 300, 0x42, 188, 6, 230 },
+{ 4, 2700000, 2700000, 0x5, 0x3, 0x1, 0x00, 0x07, 400, 0x4C, 188, 6, 230 },
+{ 5, 2970000, 2970000, 0x6, 0x3, 0x1, 0x00, 0x07, 330, 0x42, 183, 6, 225 },
+{ 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 360, 0x42, 203, 7, 256 },
+{ 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 480, 0x4C, 203, 7, 256 },
+{ 7, 3712500, 3712500, 0x4, 0x3, 0x0, 0x07, 0x0F, 550, 0x4C, 212, 7, 257 },
+{ 8, 3960000, 3960000, 0x5, 0x3, 0x0, 0x07, 0x0F, 440, 0x42, 184, 6, 226 },
+{ 9, 4320000, 4320000, 0x5, 0x3, 0x1, 0x07, 0x0F, 480, 0x42, 205, 7, 258 },
+{ 10, 4455000, 4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 495, 0x42, 219, 7, 272 },
+{ 10, 4455000, 4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 660, 0x4C, 219, 7, 272 },
+{ 11, 4950000, 4950000, 0x6, 0x3, 0x1, 0x00, 0x07, 550, 0x42, 213, 7, 258 },
+{ 12, 5940000, 5940000, 0x7, 0x3, 0x1, 0x00, 0x07, 660, 0x42, 244, 8, 292 },
+};
+
+static int cdns_phy_reg_write(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 addr, u32 val)
+{
+ return cdns_mhdp_reg_write(cdns_phy, ADDR_PHY_AFE + (addr << 2), val);
+}
+
+static u32 cdns_phy_reg_read(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 addr)
+{
+ u32 reg32;
+
+ cdns_mhdp_reg_read(cdns_phy, ADDR_PHY_AFE + (addr << 2), ®32);
+
+ return reg32;
+}
+
+#define KEEP_ALIVE 0x18
+static bool hdptx_phy_check_alive(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u32 alive, newalive;
+ u8 retries_left = 50;
+
+ alive = readl(cdns_phy->regs + KEEP_ALIVE);
+
+ while (retries_left--) {
+ udelay(2);
+
+ newalive = readl(cdns_phy->regs + KEEP_ALIVE);
+ if (alive == newalive)
+ continue;
+ return true;
+ }
+ return false;
+}
+
+static int hdptx_hdmi_clk_enable(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ struct device *dev = cdns_phy->dev;
+ u32 ref_clk_rate;
+ int ret;
+
+ cdns_phy->ref_clk = devm_clk_get(dev, "ref");
+ if (IS_ERR(cdns_phy->ref_clk)) {
+ dev_err(dev, "phy ref clock not found\n");
+ return PTR_ERR(cdns_phy->ref_clk);
+ }
+
+ cdns_phy->apb_clk = devm_clk_get(dev, "apb");
+ if (IS_ERR(cdns_phy->apb_clk)) {
+ dev_err(dev, "phy apb clock not found\n");
+ return PTR_ERR(cdns_phy->apb_clk);
+ }
+
+ ret = clk_prepare_enable(cdns_phy->ref_clk);
+ if (ret) {
+ dev_err(cdns_phy->dev, "Failed to prepare ref clock\n");
+ return ret;
+ }
+
+ ref_clk_rate = clk_get_rate(cdns_phy->ref_clk);
+ if (!ref_clk_rate) {
+ dev_err(cdns_phy->dev, "Failed to get ref clock rate\n");
+ goto err_ref_clk;
+ }
+
+ if (ref_clk_rate == REF_CLK_27MHZ)
+ cdns_phy->ref_clk_rate = ref_clk_rate;
+ else {
+ dev_err(cdns_phy->dev, "Not support Ref Clock Rate(%dHz)\n", ref_clk_rate);
+ goto err_ref_clk;
+ }
+
+ ret = clk_prepare_enable(cdns_phy->apb_clk);
+ if (ret) {
+ dev_err(cdns_phy->dev, "Failed to prepare apb clock\n");
+ goto err_ref_clk;
+ }
+
+ return 0;
+
+err_ref_clk:
+ clk_disable_unprepare(cdns_phy->ref_clk);
+ return -EINVAL;
+}
+
+static void hdptx_hdmi_clk_disable(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ clk_disable_unprepare(cdns_phy->ref_clk);
+ clk_disable_unprepare(cdns_phy->apb_clk);
+}
+
+static void hdptx_hdmi_arc_config(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u16 txpu_calib_code;
+ u16 txpd_calib_code;
+ u16 txpu_adj_calib_code;
+ u16 txpd_adj_calib_code;
+ u16 prev_calib_code;
+ u16 new_calib_code;
+ u16 rdata;
+
+ /* Power ARC */
+ cdns_phy_reg_write(cdns_phy, TXDA_CYA_AUXDA_CYA, 0x0001);
+
+ prev_calib_code = cdns_phy_reg_read(cdns_phy, TX_DIG_CTRL_REG_2);
+ txpu_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPUCAL_CTRL);
+ txpd_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPDCAL_CTRL);
+ txpu_adj_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPU_ADJ_CTRL);
+ txpd_adj_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPD_ADJ_CTRL);
+
+ new_calib_code = ((txpu_calib_code + txpd_calib_code) / 2)
+ + txpu_adj_calib_code + txpd_adj_calib_code;
+
+ if (new_calib_code != prev_calib_code) {
+ rdata = cdns_phy_reg_read(cdns_phy, TX_ANA_CTRL_REG_1);
+ rdata &= 0xDFFF;
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, rdata);
+ cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_2, new_calib_code);
+ mdelay(10);
+ rdata |= 0x2000;
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, rdata);
+ udelay(150);
+ }
+
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0100);
+ udelay(100);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0300);
+ udelay(100);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_3, 0x0000);
+ udelay(100);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2008);
+ udelay(100);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2018);
+ udelay(100);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2098);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030C);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_5, 0x0010);
+ udelay(100);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_4, 0x4001);
+ mdelay(5);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2198);
+ mdelay(5);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030D);
+ udelay(100);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030F);
+}
+
+static void hdptx_hdmi_phy_set_vswing(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u32 k;
+ const u32 num_lanes = 4;
+
+ for (k = 0; k < num_lanes; k++) {
+ cdns_phy_reg_write(cdns_phy, (TX_DIAG_TX_DRV | (k << 9)), 0x7c0);
+ cdns_phy_reg_write(cdns_phy, (TX_TXCC_CPOST_MULT_00_0 | (k << 9)), 0x0);
+ cdns_phy_reg_write(cdns_phy, (TX_TXCC_CAL_SCLR_MULT_0 | (k << 9)), 0x120);
+ }
+}
+
+static int hdptx_hdmi_feedback_factor(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u32 feedback_factor;
+
+ switch (cdns_phy->color_space) {
+ case HDMI_PHY_COLORSPACE_YUV422:
+ feedback_factor = 1000;
+ break;
+ case HDMI_PHY_COLORSPACE_YUV420:
+ switch (cdns_phy->bpc) {
+ case 8:
+ feedback_factor = 500;
+ break;
+ case 10:
+ feedback_factor = 625;
+ break;
+ case 12:
+ feedback_factor = 750;
+ break;
+ case 16:
+ feedback_factor = 1000;
+ break;
+ default:
+ dev_dbg(cdns_phy->dev, "Invalid ColorDepth\n");
+ return 0;
+ }
+ break;
+ default:
+ /* Assume RGB/YUV444 */
+ switch (cdns_phy->bpc) {
+ case 10:
+ feedback_factor = 1250;
+ break;
+ case 12:
+ feedback_factor = 1500;
+ break;
+ case 16:
+ feedback_factor = 2000;
+ break;
+ default:
+ feedback_factor = 1000;
+ }
+ }
+
+ return feedback_factor;
+}
+
+static int hdptx_hdmi_phy_config(struct cdns_hdptx_hdmi_phy *cdns_phy,
+ const struct hdptx_hdmi_ctrl *p_ctrl_table,
+ const struct hdptx_hdmi_pll_tuning *p_pll_table,
+ char pclk_in)
+{
+ const u32 num_lanes = 4;
+ u32 val, i, k;
+
+ /* enable PHY isolation mode only for CMN */
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISOLATION_CTRL, 0xD000);
+
+ /* set cmn_pll0_clk_datart1_div/cmn_pll0_clk_datart0_div dividers */
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_ISO_PLL_CTRL1);
+ val &= 0xFF00;
+ val |= 0x0012;
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_PLL_CTRL1, val);
+
+ /* assert PHY reset from isolation register */
+ cdns_phy_reg_write(cdns_phy, PHY_ISO_CMN_CTRL, 0x0000);
+ /* assert PMA CMN reset */
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0000);
+
+ /* register XCVR_DIAG_BIDI_CTRL */
+ for (k = 0; k < num_lanes; k++)
+ cdns_phy_reg_write(cdns_phy, XCVR_DIAG_BIDI_CTRL | (k << 9), 0x00FF);
+
+ /* Describing Task phy_cfg_hdp */
+
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ val &= 0xFFF7;
+ val |= 0x0008;
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
+
+ /* PHY Registers */
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ val &= 0xCFFF;
+ val |= p_ctrl_table->cmn_ref_clk_dig_div << 12;
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
+
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ val &= 0x00FF;
+ val |= 0x1200;
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
+
+ /* Common control module control and diagnostic registers */
+ val = cdns_phy_reg_read(cdns_phy, CMN_CDIAG_REFCLK_CTRL);
+ val &= 0x8FFF;
+ val |= p_ctrl_table->ref_clk_divider_scaler << 12;
+ val |= 0x00C0;
+ cdns_phy_reg_write(cdns_phy, CMN_CDIAG_REFCLK_CTRL, val);
+
+ /* High speed clock used */
+ val = cdns_phy_reg_read(cdns_phy, CMN_DIAG_HSCLK_SEL);
+ val &= 0xFF00;
+ val |= (p_ctrl_table->cmnda_hs_clk_0_sel >> 1) << 0;
+ val |= (p_ctrl_table->cmnda_hs_clk_1_sel >> 1) << 4;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_HSCLK_SEL, val);
+
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)));
+ val &= 0xCFFF;
+ val |= (p_ctrl_table->cmnda_hs_clk_0_sel >> 1) << 12;
+ cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)), val);
+ }
+
+ /* PLL 0 control state machine registers */
+ val = p_ctrl_table->vco_ring_select << 12;
+ cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_USER_DEF_CTRL, val);
+
+ if (pclk_in == true)
+ val = 0x30A0;
+ else {
+ val = cdns_phy_reg_read(cdns_phy, CMN_PLL0_VCOCAL_START);
+ val &= 0xFE00;
+ val |= p_pll_table->vco_cal_code;
+ }
+ cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_START, val);
+
+ cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_INIT_TMR, 0x0064);
+ cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_ITER_TMR, 0x000A);
+
+ /* Common functions control and diagnostics registers */
+ val = p_ctrl_table->cmnda_pll0_hs_sym_div_sel << 8;
+ val |= p_ctrl_table->cmnda_pll0_ip_div;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_INCLK_CTRL, val);
+
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_OVRD, 0x0000);
+
+ val = p_ctrl_table->cmnda_pll0_fb_div_high;
+ val |= (1 << 15);
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_FBH_OVRD, val);
+
+ val = p_ctrl_table->cmnda_pll0_fb_div_low;
+ val |= (1 << 15);
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_FBL_OVRD, val);
+
+ if (pclk_in == false) {
+ val = p_ctrl_table->cmnda_pll0_pxdiv_low;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PXL_DIVL, val);
+
+ val = p_ctrl_table->cmnda_pll0_pxdiv_high;
+ val |= (1 << 15);
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PXL_DIVH, val);
+ }
+
+ val = p_pll_table->volt_to_current_coarse;
+ val |= (p_pll_table->volt_to_current) << 4;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_V2I_TUNE, val);
+
+ val = p_pll_table->charge_pump_gain;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_CP_TUNE, val);
+
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_LF_PROG, 0x0008);
+
+ val = p_pll_table->pmos_ctrl;
+ val |= (p_pll_table->ndac_ctrl) << 8;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PTATIS_TUNE1, val);
+
+ val = p_pll_table->ptat_ndac_ctrl;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PTATIS_TUNE2, val);
+
+ if (pclk_in == true)
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_TEST_MODE, 0x0022);
+ else
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_TEST_MODE, 0x0020);
+
+ cdns_phy_reg_write(cdns_phy, CMN_PSM_CLK_CTRL, 0x0016);
+
+ /* Transceiver control and diagnostic registers */
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)));
+ val &= 0xBFFF;
+ cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val);
+ }
+
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(cdns_phy, (TX_DIAG_TX_CTRL | (k << 9)));
+ val &= 0xFF3F;
+ val |= (p_ctrl_table->hsclk_div_tx_sub_rate >> 1) << 6;
+ cdns_phy_reg_write(cdns_phy, (TX_DIAG_TX_CTRL | (k << 9)), val);
+ }
+
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ val &= 0xFF8F;
+ /*
+ * single ended reference clock (val |= 0x0030);
+ * differential clock (val |= 0x0000);
+ * for differential clock on the refclk_p and
+ * refclk_m off chip pins: CMN_DIAG_ACYA[8]=1'b1
+ * cdns_phy_reg_write(cdns_phy, CMN_DIAG_ACYA, 0x0100);
+ */
+ val |= 0x0030;
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
+
+ /* Deassert PHY reset */
+ cdns_phy_reg_write(cdns_phy, PHY_ISO_CMN_CTRL, 0x0001);
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0003);
+
+ /* Power state machine registers */
+ for (k = 0; k < num_lanes; k++)
+ cdns_phy_reg_write(cdns_phy, XCVR_PSM_RCTRL | (k << 9), 0xFEFC);
+
+ /* Assert cmn_macro_pwr_en */
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0013);
+
+ /* wait for cmn_macro_pwr_en_ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_ISO_CMN_CTRL);
+ if (val & (1 << 5))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "PMA output macro power up failed\n");
+ return -1;
+ }
+
+ /* wait for cmn_ready */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ if (val & (1 << 0))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "PMA output ready failed\n");
+ return -1;
+ }
+
+ for (k = 0; k < num_lanes; k++) {
+ cdns_phy_reg_write(cdns_phy, TX_PSC_A0 | (k << 9), 0x6791);
+ cdns_phy_reg_write(cdns_phy, TX_PSC_A1 | (k << 9), 0x6790);
+ cdns_phy_reg_write(cdns_phy, TX_PSC_A2 | (k << 9), 0x0090);
+ cdns_phy_reg_write(cdns_phy, TX_PSC_A3 | (k << 9), 0x0090);
+
+ val = cdns_phy_reg_read(cdns_phy, RX_PSC_CAL | (k << 9));
+ val &= 0xFFBB;
+ cdns_phy_reg_write(cdns_phy, RX_PSC_CAL | (k << 9), val);
+
+ val = cdns_phy_reg_read(cdns_phy, RX_PSC_A0 | (k << 9));
+ val &= 0xFFBB;
+ cdns_phy_reg_write(cdns_phy, RX_PSC_A0 | (k << 9), val);
+ }
+ return 0;
+}
+
+static int hdptx_hdmi_phy_cfg(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 rate)
+{
+ const struct hdptx_hdmi_ctrl *p_ctrl_table;
+ const struct hdptx_hdmi_pll_tuning *p_pll_table;
+ const u32 refclk_freq_khz = cdns_phy->ref_clk_rate / 1000;
+ const u8 pclk_in = false;
+ u32 pixel_freq = rate;
+ u32 vco_freq, char_freq;
+ u32 div_total, feedback_factor;
+ u32 i, ret;
+
+ feedback_factor = hdptx_hdmi_feedback_factor(cdns_phy);
+
+ char_freq = pixel_freq * feedback_factor / 1000;
+
+ dev_dbg(cdns_phy->dev, "Pixel clock: (%d KHz), character clock: %d, bpc is (%0d-bit)\n",
+ pixel_freq, char_freq, cdns_phy->bpc);
+
+ /* Get right row from the ctrl_table table.
+ * Check if 'pixel_freq_khz' value matches the PIXEL_CLK_FREQ column.
+ * Consider only the rows with FEEDBACK_FACTOR column matching feedback_factor.
+ */
+ for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++) {
+ if (feedback_factor == pixel_clk_output_ctrl_table[i].feedback_factor &&
+ pixel_freq == pixel_clk_output_ctrl_table[i].pixel_clk_freq_min) {
+ p_ctrl_table = &pixel_clk_output_ctrl_table[i];
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(pixel_clk_output_ctrl_table)) {
+ dev_warn(cdns_phy->dev, "Pixel clk (%d KHz) not supported, bpc is (%0d-bit)\n",
+ pixel_freq, cdns_phy->bpc);
+ return 0;
+ }
+
+ div_total = p_ctrl_table->pll_fb_div_total;
+ vco_freq = refclk_freq_khz * div_total / p_ctrl_table->cmnda_pll0_ip_div;
+
+ /* Get right row from the pixel_clk_output_pll_table table.
+ * Check if vco_freq_khz and feedback_div_total
+ * column matching with pixel_clk_output_pll_table.
+ */
+ for (i = 0; i < ARRAY_SIZE(pixel_clk_output_pll_table); i++) {
+ if (vco_freq == pixel_clk_output_pll_table[i].vco_freq_min &&
+ div_total == pixel_clk_output_pll_table[i].feedback_div_total) {
+ p_pll_table = &pixel_clk_output_pll_table[i];
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(pixel_clk_output_pll_table)) {
+ dev_warn(cdns_phy->dev, "VCO (%d KHz) not supported\n", vco_freq);
+ return -1;
+ }
+ dev_dbg(cdns_phy->dev, "VCO frequency is (%d KHz)\n", vco_freq);
+
+ ret = hdptx_hdmi_phy_config(cdns_phy, p_ctrl_table, p_pll_table, pclk_in);
+ if (ret < 0)
+ return ret;
+
+ return char_freq;
+}
+
+static int hdptx_hdmi_phy_power_up(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u32 val, i;
+
+ /* set Power State to A2 */
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0004);
+
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_0, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_1, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_2, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_3, 1);
+
+ /* Wait for Power State A2 Ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
+ if (val & (1 << 6))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait A2 Ack failed\n");
+ return -1;
+ }
+
+ /* Power up ARC */
+ hdptx_hdmi_arc_config(cdns_phy);
+
+ /* Configure PHY in A0 mode (PHY must be in the A0 power
+ * state in order to transmit data)
+ */
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0001);
+
+ /* Wait for Power State A0 Ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
+ if (val & (1 << 4))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait A0 Ack failed\n");
+ return -1;
+ }
+ return 0;
+}
+
+static int hdptx_hdmi_phy_power_down(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ int timeout;
+ u32 reg_val;
+
+ reg_val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
+ reg_val &= 0xfff0;
+ /* PHY_DP_MODE_CTL set to A3 power state*/
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, reg_val | 0x8);
+
+ /* Wait for A3 acknowledge */
+ timeout = 0;
+ do {
+ reg_val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
+ dev_dbg(cdns_phy->dev, "Reg val is 0x%04x\n", reg_val);
+ timeout++;
+ msleep(100);
+ } while (!(reg_val & (0x8 << 4)) && (timeout < 10));
+
+ return 0;
+}
+
+static int cdns_hdptx_hdmi_phy_on(struct phy *phy)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
+
+ return hdptx_hdmi_phy_power_up(cdns_phy);
+}
+
+static int cdns_hdptx_hdmi_phy_off(struct phy *phy)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
+
+ hdptx_hdmi_phy_power_down(cdns_phy);
+ return 0;
+}
+
+int cdns_hdptx_hdmi_phy_valid(struct phy *phy, enum phy_mode mode, int submode,
+ union phy_configure_opts *opts)
+{
+ u32 rate = opts->hdmi.pixel_clk_rate;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++)
+ if (rate == pixel_clk_output_ctrl_table[i].pixel_clk_freq_min)
+ return 0;
+
+ return -EINVAL;
+}
+
+static int cdns_hdptx_hdmi_phy_init(struct phy *phy)
+{
+ return 0;
+}
+
+static int cdns_hdptx_hdmi_configure(struct phy *phy,
+ union phy_configure_opts *opts)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
+ int ret;
+
+ cdns_phy->pixel_clk_rate = opts->hdmi.pixel_clk_rate;
+ cdns_phy->color_space = opts->hdmi.color_space;
+ cdns_phy->bpc = opts->hdmi.bpc;
+
+ /* Check HDMI FW alive before HDMI PHY init */
+ ret = hdptx_phy_check_alive(cdns_phy);
+ if (ret == false) {
+ dev_err(cdns_phy->dev, "NO HDMI FW running\n");
+ return -ENXIO;
+ }
+
+ /* Configure PHY */
+ if (hdptx_hdmi_phy_cfg(cdns_phy, cdns_phy->pixel_clk_rate) < 0) {
+ dev_err(cdns_phy->dev, "failed to set phy pclock\n");
+ return -EINVAL;
+ }
+
+ ret = hdptx_hdmi_phy_power_up(cdns_phy);
+ if (ret < 0)
+ return ret;
+
+ hdptx_hdmi_phy_set_vswing(cdns_phy);
+
+ return 0;
+}
+
+static const struct phy_ops cdns_hdptx_hdmi_phy_ops = {
+ .init = cdns_hdptx_hdmi_phy_init,
+ .configure = cdns_hdptx_hdmi_configure,
+ .power_on = cdns_hdptx_hdmi_phy_on,
+ .power_off = cdns_hdptx_hdmi_phy_off,
+ .validate = cdns_hdptx_hdmi_phy_valid,
+ .owner = THIS_MODULE,
+};
+
+static int cdns_hdptx_hdmi_phy_probe(struct platform_device *pdev)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy;
+ struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node;
+ struct phy_provider *phy_provider;
+ struct resource *res;
+ struct phy *phy;
+ int ret;
+
+ cdns_phy = devm_kzalloc(dev, sizeof(*cdns_phy), GFP_KERNEL);
+ if (!cdns_phy)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, cdns_phy);
+ cdns_phy->dev = dev;
+ mutex_init(&cdns_phy->mbox_mutex);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+ cdns_phy->regs = devm_ioremap(dev, res->start, resource_size(res));
+ if (IS_ERR(cdns_phy->regs))
+ return PTR_ERR(cdns_phy->regs);
+
+ phy = devm_phy_create(dev, node, &cdns_hdptx_hdmi_phy_ops);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+
+ phy->attrs.mode = PHY_MODE_HDMI;
+
+ cdns_phy->phy = phy;
+ phy_set_drvdata(phy, cdns_phy);
+
+ ret = hdptx_hdmi_clk_enable(cdns_phy);
+ if (ret) {
+ dev_err(dev, "Init clk fail\n");
+ return -EINVAL;
+ }
+
+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+ if (IS_ERR(phy_provider)) {
+ ret = PTR_ERR(phy_provider);
+ goto clk_disable;
+ }
+
+ dev_dbg(dev, "probe success!\n");
+
+ return 0;
+
+clk_disable:
+ hdptx_hdmi_clk_disable(cdns_phy);
+
+ return -EINVAL;
+}
+
+static int cdns_hdptx_hdmi_phy_remove(struct platform_device *pdev)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy = platform_get_drvdata(pdev);
+
+ hdptx_hdmi_clk_disable(cdns_phy);
+
+ return 0;
+}
+
+static const struct of_device_id cdns_hdptx_hdmi_phy_of_match[] = {
+ {.compatible = "fsl,imx8mq-hdmi-phy" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, cdns_hdptx_hdmi_phy_of_match);
+
+static struct platform_driver cdns_hdptx_hdmi_phy_driver = {
+ .probe = cdns_hdptx_hdmi_phy_probe,
+ .remove = cdns_hdptx_hdmi_phy_remove,
+ .driver = {
+ .name = "cdns-hdptx-hdmi-phy",
+ .of_match_table = cdns_hdptx_hdmi_phy_of_match,
+ }
+};
+module_platform_driver(cdns_hdptx_hdmi_phy_driver);
+
+MODULE_AUTHOR("Sandor Yu <[email protected]>");
+MODULE_DESCRIPTION("Cadence HDP-TX HDMI PHY driver");
+MODULE_LICENSE("GPL");
--
2.34.1
MHDP8546 mailbox access functions will be share to other mhdp driver
and Cadence HDP-TX HDMI/DP PHY drivers.
Move those functions to head file include/drm/bridge/cdns-mhdp-mailbox.h
and convert them to macro functions.
Signed-off-by: Sandor Yu <[email protected]>
---
.../drm/bridge/cadence/cdns-mhdp8546-core.c | 195 +-------------
.../drm/bridge/cadence/cdns-mhdp8546-core.h | 1 -
include/drm/bridge/cdns-mhdp-mailbox.h | 240 ++++++++++++++++++
3 files changed, 241 insertions(+), 195 deletions(-)
create mode 100644 include/drm/bridge/cdns-mhdp-mailbox.h
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index f6822dfa3805..ddd3c633c7bf 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -36,6 +36,7 @@
#include <linux/slab.h>
#include <linux/wait.h>
+#include <drm/bridge/cdns-mhdp-mailbox.h>
#include <drm/display/drm_dp_helper.h>
#include <drm/display/drm_hdcp_helper.h>
#include <drm/drm_atomic.h>
@@ -54,200 +55,6 @@
#include "cdns-mhdp8546-hdcp.h"
#include "cdns-mhdp8546-j721e.h"
-static int cdns_mhdp_mailbox_read(struct cdns_mhdp_device *mhdp)
-{
- int ret, empty;
-
- WARN_ON(!mutex_is_locked(&mhdp->mbox_mutex));
-
- ret = readx_poll_timeout(readl, mhdp->regs + CDNS_MAILBOX_EMPTY,
- empty, !empty, MAILBOX_RETRY_US,
- MAILBOX_TIMEOUT_US);
- if (ret < 0)
- return ret;
-
- return readl(mhdp->regs + CDNS_MAILBOX_RX_DATA) & 0xff;
-}
-
-static int cdns_mhdp_mailbox_write(struct cdns_mhdp_device *mhdp, u8 val)
-{
- int ret, full;
-
- WARN_ON(!mutex_is_locked(&mhdp->mbox_mutex));
-
- ret = readx_poll_timeout(readl, mhdp->regs + CDNS_MAILBOX_FULL,
- full, !full, MAILBOX_RETRY_US,
- MAILBOX_TIMEOUT_US);
- if (ret < 0)
- return ret;
-
- writel(val, mhdp->regs + CDNS_MAILBOX_TX_DATA);
-
- return 0;
-}
-
-static int cdns_mhdp_mailbox_recv_header(struct cdns_mhdp_device *mhdp,
- u8 module_id, u8 opcode,
- u16 req_size)
-{
- u32 mbox_size, i;
- u8 header[4];
- int ret;
-
- /* read the header of the message */
- for (i = 0; i < sizeof(header); i++) {
- ret = cdns_mhdp_mailbox_read(mhdp);
- if (ret < 0)
- return ret;
-
- header[i] = ret;
- }
-
- mbox_size = get_unaligned_be16(header + 2);
-
- if (opcode != header[0] || module_id != header[1] ||
- req_size != mbox_size) {
- /*
- * If the message in mailbox is not what we want, we need to
- * clear the mailbox by reading its contents.
- */
- for (i = 0; i < mbox_size; i++)
- if (cdns_mhdp_mailbox_read(mhdp) < 0)
- break;
-
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int cdns_mhdp_mailbox_recv_data(struct cdns_mhdp_device *mhdp,
- u8 *buff, u16 buff_size)
-{
- u32 i;
- int ret;
-
- for (i = 0; i < buff_size; i++) {
- ret = cdns_mhdp_mailbox_read(mhdp);
- if (ret < 0)
- return ret;
-
- buff[i] = ret;
- }
-
- return 0;
-}
-
-static int cdns_mhdp_mailbox_send(struct cdns_mhdp_device *mhdp, u8 module_id,
- u8 opcode, u16 size, u8 *message)
-{
- u8 header[4];
- int ret, i;
-
- header[0] = opcode;
- header[1] = module_id;
- put_unaligned_be16(size, header + 2);
-
- for (i = 0; i < sizeof(header); i++) {
- ret = cdns_mhdp_mailbox_write(mhdp, header[i]);
- if (ret)
- return ret;
- }
-
- for (i = 0; i < size; i++) {
- ret = cdns_mhdp_mailbox_write(mhdp, message[i]);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static
-int cdns_mhdp_reg_read(struct cdns_mhdp_device *mhdp, u32 addr, u32 *value)
-{
- u8 msg[4], resp[8];
- int ret;
-
- put_unaligned_be32(addr, msg);
-
- mutex_lock(&mhdp->mbox_mutex);
-
- ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_GENERAL,
- GENERAL_REGISTER_READ,
- sizeof(msg), msg);
- if (ret)
- goto out;
-
- ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_GENERAL,
- GENERAL_REGISTER_READ,
- sizeof(resp));
- if (ret)
- goto out;
-
- ret = cdns_mhdp_mailbox_recv_data(mhdp, resp, sizeof(resp));
- if (ret)
- goto out;
-
- /* Returned address value should be the same as requested */
- if (memcmp(msg, resp, sizeof(msg))) {
- ret = -EINVAL;
- goto out;
- }
-
- *value = get_unaligned_be32(resp + 4);
-
-out:
- mutex_unlock(&mhdp->mbox_mutex);
- if (ret) {
- dev_err(mhdp->dev, "Failed to read register\n");
- *value = 0;
- }
-
- return ret;
-}
-
-static
-int cdns_mhdp_reg_write(struct cdns_mhdp_device *mhdp, u16 addr, u32 val)
-{
- u8 msg[6];
- int ret;
-
- put_unaligned_be16(addr, msg);
- put_unaligned_be32(val, msg + 2);
-
- mutex_lock(&mhdp->mbox_mutex);
-
- ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
- DPTX_WRITE_REGISTER, sizeof(msg), msg);
-
- mutex_unlock(&mhdp->mbox_mutex);
-
- return ret;
-}
-
-static
-int cdns_mhdp_reg_write_bit(struct cdns_mhdp_device *mhdp, u16 addr,
- u8 start_bit, u8 bits_no, u32 val)
-{
- u8 field[8];
- int ret;
-
- put_unaligned_be16(addr, field);
- field[2] = start_bit;
- field[3] = bits_no;
- put_unaligned_be32(val, field + 4);
-
- mutex_lock(&mhdp->mbox_mutex);
-
- ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
- DPTX_WRITE_FIELD, sizeof(field), field);
-
- mutex_unlock(&mhdp->mbox_mutex);
-
- return ret;
-}
-
static
int cdns_mhdp_dpcd_read(struct cdns_mhdp_device *mhdp,
u32 addr, u8 *data, u16 len)
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h
index bedddd510d17..10c878bf0e63 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h
@@ -212,7 +212,6 @@ struct phy;
#define MB_MODULE_ID_HDCP_TX 0x07
#define MB_MODULE_ID_HDCP_RX 0x08
#define MB_MODULE_ID_HDCP_GENERAL 0x09
-#define MB_MODULE_ID_GENERAL 0x0a
/* firmware and opcodes */
#define FW_NAME "cadence/mhdp8546.bin"
diff --git a/include/drm/bridge/cdns-mhdp-mailbox.h b/include/drm/bridge/cdns-mhdp-mailbox.h
new file mode 100644
index 000000000000..0249322a74b0
--- /dev/null
+++ b/include/drm/bridge/cdns-mhdp-mailbox.h
@@ -0,0 +1,240 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Cadence MHDP Firmware Access API function by Malibox.
+ *
+ * Copyright (C) 2022 NXP Semiconductor, Inc.
+ *
+ */
+#ifndef CDNS_MHDP_MAILBOX_H
+#define CDNS_MHDP_MAILBOX_H
+
+#include <asm/unaligned.h>
+#include <linux/iopoll.h>
+
+/* mailbox regs offset */
+#define CDNS_MAILBOX_FULL 0x00008
+#define CDNS_MAILBOX_EMPTY 0x0000c
+#define CDNS_MAILBOX_TX_DATA 0x00010
+#define CDNS_MAILBOX_RX_DATA 0x00014
+
+#define MAILBOX_RETRY_US 1000
+#define MAILBOX_TIMEOUT_US 2000000
+
+/* Module ID Code */
+#define MB_MODULE_ID_GENERAL 0x0A
+#define MB_MODULE_ID_DP_TX 0x01
+
+/* General Commands */
+#define GENERAL_REGISTER_WRITE 0x05
+#define GENERAL_REGISTER_READ 0x07
+
+/* DP TX Command */
+#define DPTX_WRITE_FIELD 0x08
+
+/* MHDP Firmware access functions by Mailbox */
+#define cdns_mhdp_mailbox_read(__mhdp) \
+({ \
+ int ret, empty, val; \
+\
+ WARN_ON(!mutex_is_locked(&(__mhdp)->mbox_mutex)); \
+\
+ do { \
+ ret = readx_poll_timeout(readl, (__mhdp)->regs + CDNS_MAILBOX_EMPTY, \
+ empty, !empty, MAILBOX_RETRY_US, \
+ MAILBOX_TIMEOUT_US); \
+ if (ret < 0) \
+ break; \
+\
+ val = readl((__mhdp)->regs + CDNS_MAILBOX_RX_DATA) & 0xff; \
+ } while (0); \
+\
+ (ret < 0) ? ret : val; \
+})
+
+#define cdns_mhdp_mailbox_write(__mhdp, __val) \
+({ \
+ int ret, full; \
+\
+ WARN_ON(!mutex_is_locked(&(__mhdp)->mbox_mutex)); \
+\
+ do { \
+ ret = readx_poll_timeout(readl, (__mhdp)->regs + CDNS_MAILBOX_FULL, \
+ full, !full, MAILBOX_RETRY_US, \
+ MAILBOX_TIMEOUT_US); \
+ if (ret < 0) \
+ break; \
+\
+ writel((__val), (__mhdp)->regs + CDNS_MAILBOX_TX_DATA); \
+ } while (0); \
+\
+ ret; \
+})
+
+#define cdns_mhdp_mailbox_recv_header(__mhdp, __module_id, __opcode, __req_size) \
+({ \
+ u32 mbox_size, i; \
+ u8 header[4]; \
+ int ret; \
+\
+ do { \
+ /* read the header of the message */ \
+ for (i = 0; i < sizeof(header); i++) { \
+ ret = cdns_mhdp_mailbox_read(__mhdp); \
+ if (ret < 0) \
+ break; \
+\
+ header[i] = ret; \
+ } \
+\
+ mbox_size = get_unaligned_be16(header + 2); \
+\
+ if ((__opcode) != header[0] || (__module_id) != header[1] || \
+ (__req_size) != mbox_size) { \
+ /* If the message in mailbox is not what we want, we need to
+ * clear the mailbox by reading its contents. */ \
+ for (i = 0; i < mbox_size; i++) \
+ if (cdns_mhdp_mailbox_read(__mhdp) < 0) \
+ break; \
+\
+ ret = -EINVAL; \
+ } \
+\
+ ret = 0; \
+\
+ } while (0); \
+\
+ ret; \
+})
+
+#define cdns_mhdp_mailbox_recv_data(mhdp, buff, buff_size) \
+({ \
+ u32 i; \
+ int ret; \
+\
+ do { \
+ for (i = 0; i < buff_size; i++) { \
+ ret = cdns_mhdp_mailbox_read(mhdp); \
+ if (ret < 0) \
+ break; \
+\
+ ((u8 *)buff)[i] = ret; \
+ } \
+\
+ ret = 0; \
+\
+ } while (0); \
+\
+ ret; \
+})
+
+#define cdns_mhdp_mailbox_send(mhdp, module_id, opcode, size, message) \
+({ \
+ u8 header[4]; \
+ int ret, i; \
+\
+ header[0] = opcode; \
+ header[1] = module_id; \
+ put_unaligned_be16(size, header + 2); \
+\
+ do { \
+ for (i = 0; i < sizeof(header); i++) { \
+ ret = cdns_mhdp_mailbox_write(mhdp, header[i]); \
+ if (ret < 0) \
+ break; \
+ } \
+\
+ for (i = 0; i < size; i++) { \
+ ret = cdns_mhdp_mailbox_write(mhdp, ((u8 *)message)[i]); \
+ if (ret < 0) \
+ break;; \
+ } \
+ ret = 0; \
+ } while (0); \
+\
+ ret; \
+})
+
+#define cdns_mhdp_reg_read(mhdp, addr, value) \
+({ \
+ u8 msg[4], resp[8]; \
+ int ret; \
+\
+ put_unaligned_be32(addr, msg); \
+\
+ mutex_lock(&mhdp->mbox_mutex); \
+\
+ do { \
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_GENERAL, \
+ GENERAL_REGISTER_READ, \
+ sizeof(msg), msg); \
+ if (ret < 0) \
+ break; \
+\
+ ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_GENERAL, \
+ GENERAL_REGISTER_READ, \
+ sizeof(resp)); \
+ if (ret < 0) \
+ break; \
+\
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, resp, sizeof(resp)); \
+ if (ret < 0) \
+ break; \
+\
+ /* Returned address value should be the same as requested */ \
+ if (memcmp(msg, resp, sizeof(msg))) { \
+ ret = -EINVAL; \
+ break; \
+ } \
+\
+ *((u32 *)value) = get_unaligned_be32(resp + 4); \
+ ret = 0; \
+ } while (0); \
+\
+ mutex_unlock(&mhdp->mbox_mutex); \
+ if (ret < 0) { \
+ dev_err(mhdp->dev, "Failed to read register\n"); \
+ *((u32 *)value) = 0; \
+ } \
+\
+ ret; \
+})
+
+#define cdns_mhdp_reg_write(mhdp, addr, val) \
+({ \
+ u8 msg[8]; \
+ int ret; \
+\
+ put_unaligned_be32(addr, msg); \
+ put_unaligned_be32(val, msg + 4); \
+\
+ mutex_lock(&mhdp->mbox_mutex); \
+\
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_GENERAL, \
+ GENERAL_REGISTER_WRITE, sizeof(msg), msg); \
+\
+ mutex_unlock(&mhdp->mbox_mutex); \
+\
+ ret; \
+})
+
+#define cdns_mhdp_reg_write_bit(mhdp, addr, start_bit, bits_no, val) \
+({ \
+ u8 field[8]; \
+ int ret; \
+\
+ put_unaligned_be16(addr, field); \
+ field[2] = start_bit; \
+ field[3] = bits_no; \
+ put_unaligned_be32(val, field + 4); \
+\
+ mutex_lock(&mhdp->mbox_mutex); \
+\
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX, \
+ DPTX_WRITE_FIELD, sizeof(field), field); \
+\
+ mutex_unlock(&mhdp->mbox_mutex); \
+\
+ ret; \
+})
+
+#endif
--
2.34.1
Allow HDMI PHYs to be configured through the generic
functions through a custom structure added to the generic union.
The parameters added here are based on HDMI PHY
implementation practices. The current set of parameters
should cover the potential users.
Signed-off-by: Sandor Yu <[email protected]>
---
include/linux/phy/phy-hdmi.h | 38 ++++++++++++++++++++++++++++++++++++
include/linux/phy/phy.h | 7 ++++++-
2 files changed, 44 insertions(+), 1 deletion(-)
create mode 100644 include/linux/phy/phy-hdmi.h
diff --git a/include/linux/phy/phy-hdmi.h b/include/linux/phy/phy-hdmi.h
new file mode 100644
index 000000000000..5765aa5bc175
--- /dev/null
+++ b/include/linux/phy/phy-hdmi.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2022 NXP
+ */
+
+#ifndef __PHY_HDMI_H_
+#define __PHY_HDMI_H_
+
+/**
+ * Pixel Encoding as HDMI Specification
+ * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
+ * YUV420: HDMI Specification 2.a Section 7.1
+ */
+enum hdmi_phy_colorspace {
+ HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
+ HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
+ HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
+ HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
+ HDMI_PHY_COLORSPACE_RESERVED4,
+ HDMI_PHY_COLORSPACE_RESERVED5,
+ HDMI_PHY_COLORSPACE_RESERVED6,
+};
+
+/**
+ * struct phy_configure_opts_hdmi - HDMI configuration set
+ * @pixel_clk_rate: Pixel clock of video modes in KHz.
+ * @bpc: Maximum bits per color channel.
+ * @color_space: Colorspace in enum hdmi_phy_colorspace.
+ *
+ * This structure is used to represent the configuration state of a HDMI phy.
+ */
+struct phy_configure_opts_hdmi {
+ unsigned int pixel_clk_rate;
+ unsigned int bpc;
+ enum hdmi_phy_colorspace color_space;
+};
+
+#endif /* __PHY_HDMI_H_ */
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index 3a570bc59fc7..93d77d45b1d4 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -17,6 +17,7 @@
#include <linux/regulator/consumer.h>
#include <linux/phy/phy-dp.h>
+#include <linux/phy/phy-hdmi.h>
#include <linux/phy/phy-lvds.h>
#include <linux/phy/phy-mipi-dphy.h>
@@ -42,7 +43,8 @@ enum phy_mode {
PHY_MODE_MIPI_DPHY,
PHY_MODE_SATA,
PHY_MODE_LVDS,
- PHY_MODE_DP
+ PHY_MODE_DP,
+ PHY_MODE_HDMI,
};
enum phy_media {
@@ -60,11 +62,14 @@ enum phy_media {
* the DisplayPort protocol.
* @lvds: Configuration set applicable for phys supporting
* the LVDS phy mode.
+ * @hdmi: Configuration set applicable for phys supporting
+ * the HDMI phy mode.
*/
union phy_configure_opts {
struct phy_configure_opts_mipi_dphy mipi_dphy;
struct phy_configure_opts_dp dp;
struct phy_configure_opts_lvds lvds;
+ struct phy_configure_opts_hdmi hdmi;
};
/**
--
2.34.1
Add Cadence HDP-TX DisplayPort PHY driver for i.MX8MQ
Cadence HDP-TX PHY could be put in either DP mode or
HDMI mode base on the configuration chosen.
DisplayPort PHY mode is configurated in the driver.
Signed-off-by: Sandor Yu <[email protected]>
---
drivers/phy/freescale/Kconfig | 9 +
drivers/phy/freescale/Makefile | 1 +
drivers/phy/freescale/phy-fsl-imx8mq-dp.c | 697 ++++++++++++++++++++++
3 files changed, 707 insertions(+)
create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-dp.c
diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig
index 853958fb2c06..a99ee370eda6 100644
--- a/drivers/phy/freescale/Kconfig
+++ b/drivers/phy/freescale/Kconfig
@@ -35,6 +35,15 @@ config PHY_FSL_IMX8M_PCIE
Enable this to add support for the PCIE PHY as found on
i.MX8M family of SOCs.
+config PHY_CADENCE_DP_PHY
+ tristate "Cadence HDPTX DP PHY support"
+ depends on OF && HAS_IOMEM
+ depends on COMMON_CLK
+ select GENERIC_PHY
+ help
+ Enable this to support the Cadence HDPTX DP PHY driver
+ on NXP's i.MX8MQ SOC.
+
endif
config PHY_FSL_LYNX_28G
diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile
index cedb328bc4d2..c3bdf3fa2e72 100644
--- a/drivers/phy/freescale/Makefile
+++ b/drivers/phy/freescale/Makefile
@@ -4,3 +4,4 @@ obj-$(CONFIG_PHY_MIXEL_LVDS_PHY) += phy-fsl-imx8qm-lvds-phy.o
obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o
obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o
obj-$(CONFIG_PHY_FSL_LYNX_28G) += phy-fsl-lynx-28g.o
+obj-$(CONFIG_PHY_CADENCE_DP_PHY) += phy-fsl-imx8mq-dp.o
diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-dp.c b/drivers/phy/freescale/phy-fsl-imx8mq-dp.c
new file mode 100644
index 000000000000..2bd6772a5d3b
--- /dev/null
+++ b/drivers/phy/freescale/phy-fsl-imx8mq-dp.c
@@ -0,0 +1,697 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Cadence HDP-TX Display Port Interface (DP) PHY driver
+ *
+ * Copyright (C) 2022 NXP Semiconductor, Inc.
+ */
+#include <asm/unaligned.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+
+#include <drm/bridge/cdns-mhdp-mailbox.h>
+
+#define ADDR_PHY_AFE 0x80000
+
+/* PHY registers */
+#define CMN_SSM_BIAS_TMR 0x0022
+#define CMN_PLLSM0_PLLEN_TMR 0x0029
+#define CMN_PLLSM0_PLLPRE_TMR 0x002A
+#define CMN_PLLSM0_PLLVREF_TMR 0x002B
+#define CMN_PLLSM0_PLLLOCK_TMR 0x002C
+#define CMN_PLLSM0_USER_DEF_CTRL 0x002F
+#define CMN_PSM_CLK_CTRL 0x0061
+#define CMN_PLL0_VCOCAL_START 0x0081
+#define CMN_PLL0_VCOCAL_INIT_TMR 0x0084
+#define CMN_PLL0_VCOCAL_ITER_TMR 0x0085
+#define CMN_PLL0_INTDIV 0x0094
+#define CMN_PLL0_FRACDIV 0x0095
+#define CMN_PLL0_HIGH_THR 0x0096
+#define CMN_PLL0_DSM_DIAG 0x0097
+#define CMN_PLL0_SS_CTRL2 0x0099
+#define CMN_ICAL_INIT_TMR 0x00C4
+#define CMN_ICAL_ITER_TMR 0x00C5
+#define CMN_RXCAL_INIT_TMR 0x00D4
+#define CMN_RXCAL_ITER_TMR 0x00D5
+#define CMN_TXPUCAL_INIT_TMR 0x00E4
+#define CMN_TXPUCAL_ITER_TMR 0x00E5
+#define CMN_TXPDCAL_INIT_TMR 0x00F4
+#define CMN_TXPDCAL_ITER_TMR 0x00F5
+#define CMN_ICAL_ADJ_INIT_TMR 0x0102
+#define CMN_ICAL_ADJ_ITER_TMR 0x0103
+#define CMN_RX_ADJ_INIT_TMR 0x0106
+#define CMN_RX_ADJ_ITER_TMR 0x0107
+#define CMN_TXPU_ADJ_INIT_TMR 0x010A
+#define CMN_TXPU_ADJ_ITER_TMR 0x010B
+#define CMN_TXPD_ADJ_INIT_TMR 0x010E
+#define CMN_TXPD_ADJ_ITER_TMR 0x010F
+#define CMN_DIAG_PLL0_FBH_OVRD 0x01C0
+#define CMN_DIAG_PLL0_FBL_OVRD 0x01C1
+#define CMN_DIAG_PLL0_OVRD 0x01C2
+#define CMN_DIAG_PLL0_TEST_MODE 0x01C4
+#define CMN_DIAG_PLL0_V2I_TUNE 0x01C5
+#define CMN_DIAG_PLL0_CP_TUNE 0x01C6
+#define CMN_DIAG_PLL0_LF_PROG 0x01C7
+#define CMN_DIAG_PLL0_PTATIS_TUNE1 0x01C8
+#define CMN_DIAG_PLL0_PTATIS_TUNE2 0x01C9
+#define CMN_DIAG_HSCLK_SEL 0x01E0
+#define CMN_DIAG_PER_CAL_ADJ 0x01EC
+#define CMN_DIAG_CAL_CTRL 0x01ED
+#define CMN_DIAG_ACYA 0x01FF
+#define XCVR_PSM_RCTRL 0x4001
+#define XCVR_PSM_CAL_TMR 0x4002
+#define XCVR_PSM_A0IN_TMR 0x4003
+#define TX_TXCC_CAL_SCLR_MULT_0 0x4047
+#define TX_TXCC_CPOST_MULT_00_0 0x404C
+#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
+#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
+#define XCVR_DIAG_HSCLK_SEL 0x40E1
+#define XCVR_DIAG_LANE_FCM_EN_MGN_TMR 0x40F2
+#define TX_PSC_A0 0x4100
+#define TX_PSC_A1 0x4101
+#define TX_PSC_A2 0x4102
+#define TX_PSC_A3 0x4103
+#define TX_RCVDET_EN_TMR 0x4122
+#define TX_RCVDET_ST_TMR 0x4123
+#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
+#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
+#define TX_DIAG_ACYA_0 0x41FF
+#define TX_DIAG_ACYA_1 0x43FF
+#define TX_DIAG_ACYA_2 0x45FF
+#define TX_DIAG_ACYA_3 0x47FF
+#define TX_ANA_CTRL_REG_1 0x5020
+#define TX_ANA_CTRL_REG_2 0x5021
+#define TX_DIG_CTRL_REG_1 0x5023
+#define TX_DIG_CTRL_REG_2 0x5024
+#define TXDA_CYA_AUXDA_CYA 0x5025
+#define TX_ANA_CTRL_REG_3 0x5026
+#define TX_ANA_CTRL_REG_4 0x5027
+#define TX_ANA_CTRL_REG_5 0x5029
+#define RX_PSC_A0 0x8000
+#define RX_PSC_CAL 0x8006
+#define PHY_HDP_MODE_CTRL 0xC008
+#define PHY_HDP_CLK_CTL 0xC009
+#define PHY_PMA_CMN_CTRL1 0xC800
+
+#define REF_CLK_27MHZ 27000000
+
+enum dp_link_rate {
+ RATE_1_6 = 162000,
+ RATE_2_1 = 216000,
+ RATE_2_4 = 243000,
+ RATE_2_7 = 270000,
+ RATE_3_2 = 324000,
+ RATE_4_3 = 432000,
+ RATE_5_4 = 540000,
+ RATE_8_1 = 810000,
+};
+
+#define MAX_LINK_RATE RATE_5_4
+
+struct phy_pll_reg {
+ u16 val[7];
+ u32 addr;
+};
+
+static const struct phy_pll_reg phy_pll_27m_cfg[] = {
+ /* 1.62 2.16 2.43 2.7 3.24 4.32 5.4 register address */
+ {{ 0x010E, 0x010E, 0x010E, 0x010E, 0x010E, 0x010E, 0x010E }, CMN_PLL0_VCOCAL_INIT_TMR },
+ {{ 0x001B, 0x001B, 0x001B, 0x001B, 0x001B, 0x001B, 0x001B }, CMN_PLL0_VCOCAL_ITER_TMR },
+ {{ 0x30B9, 0x3087, 0x3096, 0x30B4, 0x30B9, 0x3087, 0x30B4 }, CMN_PLL0_VCOCAL_START },
+ {{ 0x0077, 0x009F, 0x00B3, 0x00C7, 0x0077, 0x009F, 0x00C7 }, CMN_PLL0_INTDIV },
+ {{ 0xF9DA, 0xF7CD, 0xF6C7, 0xF5C1, 0xF9DA, 0xF7CD, 0xF5C1 }, CMN_PLL0_FRACDIV },
+ {{ 0x001E, 0x0028, 0x002D, 0x0032, 0x001E, 0x0028, 0x0032 }, CMN_PLL0_HIGH_THR },
+ {{ 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020 }, CMN_PLL0_DSM_DIAG },
+ {{ 0x0000, 0x1000, 0x1000, 0x1000, 0x0000, 0x1000, 0x1000 }, CMN_PLLSM0_USER_DEF_CTRL },
+ {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_OVRD },
+ {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_FBH_OVRD },
+ {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_FBL_OVRD },
+ {{ 0x0006, 0x0007, 0x0007, 0x0007, 0x0006, 0x0007, 0x0007 }, CMN_DIAG_PLL0_V2I_TUNE },
+ {{ 0x0043, 0x0043, 0x0043, 0x0042, 0x0043, 0x0043, 0x0042 }, CMN_DIAG_PLL0_CP_TUNE },
+ {{ 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008 }, CMN_DIAG_PLL0_LF_PROG },
+ {{ 0x0100, 0x0001, 0x0001, 0x0001, 0x0100, 0x0001, 0x0001 }, CMN_DIAG_PLL0_PTATIS_TUNE1 },
+ {{ 0x0007, 0x0001, 0x0001, 0x0001, 0x0007, 0x0001, 0x0001 }, CMN_DIAG_PLL0_PTATIS_TUNE2 },
+ {{ 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020 }, CMN_DIAG_PLL0_TEST_MODE},
+ {{ 0x0016, 0x0016, 0x0016, 0x0016, 0x0016, 0x0016, 0x0016 }, CMN_PSM_CLK_CTRL }
+};
+
+struct cdns_hdptx_dp_phy {
+ void __iomem *regs; /* DPTX registers base */
+ struct device *dev;
+ struct phy *phy;
+ struct mutex mbox_mutex; /* mutex to protect mailbox */
+ struct clk *ref_clk, *apb_clk;
+ u32 ref_clk_rate;
+ u32 num_lanes;
+ u32 link_rate;
+ bool power_up;
+};
+
+static int cdns_phy_reg_write(struct cdns_hdptx_dp_phy *cdns_phy, u32 addr, u32 val)
+{
+ return cdns_mhdp_reg_write(cdns_phy, ADDR_PHY_AFE + (addr << 2), val);
+}
+
+static u32 cdns_phy_reg_read(struct cdns_hdptx_dp_phy *cdns_phy, u32 addr)
+{
+ u32 reg32;
+
+ cdns_mhdp_reg_read(cdns_phy, ADDR_PHY_AFE + (addr << 2), ®32);
+ return reg32;
+}
+
+static int link_rate_index(u32 rate)
+{
+ switch (rate) {
+ case RATE_1_6:
+ return 0;
+ case RATE_2_1:
+ return 1;
+ case RATE_2_4:
+ return 2;
+ case RATE_2_7:
+ return 3;
+ case RATE_3_2:
+ return 4;
+ case RATE_4_3:
+ return 5;
+ case RATE_5_4:
+ return 6;
+ default:
+ return -1;
+ }
+}
+
+static int hdptx_dp_clk_enable(struct cdns_hdptx_dp_phy *cdns_phy)
+{
+ struct device *dev = cdns_phy->dev;
+ u32 ref_clk_rate;
+ int ret;
+
+ cdns_phy->ref_clk = devm_clk_get(dev, "ref");
+ if (IS_ERR(cdns_phy->ref_clk)) {
+ dev_err(dev, "phy ref clock not found\n");
+ return PTR_ERR(cdns_phy->ref_clk);
+ }
+
+ cdns_phy->apb_clk = devm_clk_get(dev, "apb");
+ if (IS_ERR(cdns_phy->apb_clk)) {
+ dev_err(dev, "phy apb clock not found\n");
+ return PTR_ERR(cdns_phy->apb_clk);
+ }
+
+ ret = clk_prepare_enable(cdns_phy->ref_clk);
+ if (ret) {
+ dev_err(cdns_phy->dev, "Failed to prepare ref clock\n");
+ return ret;
+ }
+
+ ref_clk_rate = clk_get_rate(cdns_phy->ref_clk);
+ if (!ref_clk_rate) {
+ dev_err(cdns_phy->dev, "Failed to get ref clock rate\n");
+ goto err_ref_clk;
+ }
+
+ if (ref_clk_rate == REF_CLK_27MHZ)
+ cdns_phy->ref_clk_rate = ref_clk_rate;
+ else {
+ dev_err(cdns_phy->dev, "Not support Ref Clock Rate(%dHz)\n", ref_clk_rate);
+ goto err_ref_clk;
+ }
+
+ ret = clk_prepare_enable(cdns_phy->apb_clk);
+ if (ret) {
+ dev_err(cdns_phy->dev, "Failed to prepare apb clock\n");
+ goto err_ref_clk;
+ }
+
+ return 0;
+
+err_ref_clk:
+ clk_disable_unprepare(cdns_phy->ref_clk);
+ return -EINVAL;
+}
+
+static void hdptx_dp_clk_disable(struct cdns_hdptx_dp_phy *cdns_phy)
+{
+ clk_disable_unprepare(cdns_phy->ref_clk);
+ clk_disable_unprepare(cdns_phy->apb_clk);
+}
+
+static void hdptx_dp_aux_cfg(struct cdns_hdptx_dp_phy *cdns_phy)
+{
+ /* Power up Aux */
+ cdns_phy_reg_write(cdns_phy, TXDA_CYA_AUXDA_CYA, 1);
+
+ cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_1, 0x3);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_2, 36);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0100);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0300);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_3, 0x0000);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2008);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2018);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA018);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030C);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_5, 0x0000);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_4, 0x1001);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA098);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA198);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030d);
+ ndelay(150);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030f);
+}
+
+/* PMA common configuration for 27MHz */
+static void hdptx_dp_phy_pma_cmn_cfg_27mhz(struct cdns_hdptx_dp_phy *cdns_phy)
+{
+ u32 num_lanes = cdns_phy->num_lanes;
+ u16 val;
+ int k;
+
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ val &= 0xFFF7;
+ val |= 0x0008;
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
+
+ /* Startup state machine registers */
+ cdns_phy_reg_write(cdns_phy, CMN_SSM_BIAS_TMR, 0x0087);
+ cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLEN_TMR, 0x001B);
+ cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLPRE_TMR, 0x0036);
+ cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLVREF_TMR, 0x001B);
+ cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLLOCK_TMR, 0x006C);
+
+ /* Current calibration registers */
+ cdns_phy_reg_write(cdns_phy, CMN_ICAL_INIT_TMR, 0x0044);
+ cdns_phy_reg_write(cdns_phy, CMN_ICAL_ITER_TMR, 0x0006);
+ cdns_phy_reg_write(cdns_phy, CMN_ICAL_ADJ_INIT_TMR, 0x0022);
+ cdns_phy_reg_write(cdns_phy, CMN_ICAL_ADJ_ITER_TMR, 0x0006);
+
+ /* Resistor calibration registers */
+ cdns_phy_reg_write(cdns_phy, CMN_TXPUCAL_INIT_TMR, 0x0022);
+ cdns_phy_reg_write(cdns_phy, CMN_TXPUCAL_ITER_TMR, 0x0006);
+ cdns_phy_reg_write(cdns_phy, CMN_TXPU_ADJ_INIT_TMR, 0x0022);
+ cdns_phy_reg_write(cdns_phy, CMN_TXPU_ADJ_ITER_TMR, 0x0006);
+ cdns_phy_reg_write(cdns_phy, CMN_TXPDCAL_INIT_TMR, 0x0022);
+ cdns_phy_reg_write(cdns_phy, CMN_TXPDCAL_ITER_TMR, 0x0006);
+ cdns_phy_reg_write(cdns_phy, CMN_TXPD_ADJ_INIT_TMR, 0x0022);
+ cdns_phy_reg_write(cdns_phy, CMN_TXPD_ADJ_ITER_TMR, 0x0006);
+ cdns_phy_reg_write(cdns_phy, CMN_RXCAL_INIT_TMR, 0x0022);
+ cdns_phy_reg_write(cdns_phy, CMN_RXCAL_ITER_TMR, 0x0006);
+ cdns_phy_reg_write(cdns_phy, CMN_RX_ADJ_INIT_TMR, 0x0022);
+ cdns_phy_reg_write(cdns_phy, CMN_RX_ADJ_ITER_TMR, 0x0006);
+
+ for (k = 0; k < num_lanes; k = k + 1) {
+ /* Power state machine registers */
+ cdns_phy_reg_write(cdns_phy, XCVR_PSM_CAL_TMR | (k << 9), 0x016D);
+ cdns_phy_reg_write(cdns_phy, XCVR_PSM_A0IN_TMR | (k << 9), 0x016D);
+ /* Transceiver control and diagnostic registers */
+ cdns_phy_reg_write(cdns_phy, XCVR_DIAG_LANE_FCM_EN_MGN_TMR | (k << 9), 0x00A2);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_BGREF_PREDRV_DELAY | (k << 9), 0x0097);
+ /* Transmitter receiver detect registers */
+ cdns_phy_reg_write(cdns_phy, TX_RCVDET_EN_TMR | (k << 9), 0x0A8C);
+ cdns_phy_reg_write(cdns_phy, TX_RCVDET_ST_TMR | (k << 9), 0x0036);
+ }
+
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_0, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_1, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_2, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_3, 1);
+}
+
+static void hdptx_dp_phy_pma_cmn_pll0_27mhz(struct cdns_hdptx_dp_phy *cdns_phy)
+{
+ u32 num_lanes = cdns_phy->num_lanes;
+ u32 link_rate = cdns_phy->link_rate;
+ u16 val;
+ int index, i, k;
+
+ /* DP PLL data rate 0/1 clock divider value */
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ val &= 0x00FF;
+ if (link_rate <= RATE_2_7)
+ val |= 0x2400;
+ else
+ val |= 0x1200;
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
+
+ /* High speed clock 0/1 div */
+ val = cdns_phy_reg_read(cdns_phy, CMN_DIAG_HSCLK_SEL);
+ val &= 0xFFCC;
+ if (link_rate <= RATE_2_7)
+ val |= 0x0011;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_HSCLK_SEL, val);
+
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)));
+ val = val & 0xCFFF;
+ if (link_rate <= RATE_2_7)
+ val |= 0x1000;
+ cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)), val);
+ }
+
+ /* DP PHY PLL 27MHz configuration */
+ index = link_rate_index(link_rate);
+ for (i = 0; i < ARRAY_SIZE(phy_pll_27m_cfg); i++)
+ cdns_phy_reg_write(cdns_phy, phy_pll_27m_cfg[i].addr,
+ phy_pll_27m_cfg[i].val[index]);
+
+ /* Transceiver control and diagnostic registers */
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)));
+ val = val & 0x8FFF;
+ if (link_rate <= RATE_2_7)
+ val |= 0x2000;
+ else
+ val |= 0x1000;
+ cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val);
+ }
+
+ for (k = 0; k < num_lanes; k = k + 1) {
+ /* Power state machine registers */
+ cdns_phy_reg_write(cdns_phy, (XCVR_PSM_RCTRL | (k << 9)), 0xBEFC);
+ cdns_phy_reg_write(cdns_phy, (TX_PSC_A0 | (k << 9)), 0x6799);
+ cdns_phy_reg_write(cdns_phy, (TX_PSC_A1 | (k << 9)), 0x6798);
+ cdns_phy_reg_write(cdns_phy, (TX_PSC_A2 | (k << 9)), 0x0098);
+ cdns_phy_reg_write(cdns_phy, (TX_PSC_A3 | (k << 9)), 0x0098);
+ /* Receiver calibration power state definition register */
+ val = cdns_phy_reg_read(cdns_phy, RX_PSC_CAL | (k << 9));
+ val &= 0xFFBB;
+ cdns_phy_reg_write(cdns_phy, (RX_PSC_CAL | (k << 9)), val);
+ val = cdns_phy_reg_read(cdns_phy, RX_PSC_A0 | (k << 9));
+ val &= 0xFFBB;
+ cdns_phy_reg_write(cdns_phy, (RX_PSC_A0 | (k << 9)), val);
+ }
+}
+
+static void hdptx_dp_phy_ref_clock_type(struct cdns_hdptx_dp_phy *cdns_phy)
+{
+ u32 val;
+
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ val &= 0xFF8F;
+ /*
+ * single ended reference clock (val |= 0x0030);
+ * differential clock (val |= 0x0000);
+ *
+ * for differential clock on the refclk_p and
+ * refclk_m off chip pins: CMN_DIAG_ACYA[8]=1'b1
+ * cdns_phy_reg_write(cdns_phy, CMN_DIAG_ACYA, 0x0100);
+ */
+ val |= 0x0030;
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
+}
+
+static int hdptx_dp_phy_power_up(struct cdns_hdptx_dp_phy *cdns_phy)
+{
+ u32 val, i;
+
+ /* Enable HDP PLL’s for high speed clocks */
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ val |= (1 << 0);
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
+ /* Wait for PLL ready ACK */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ if (val & (1 << 1))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait PLL Ack failed\n");
+ return -1;
+ }
+
+ /* Enable HDP PLL’s data rate and full rate clocks out of PMA. */
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ val |= (1 << 2);
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
+ /* Wait for PLL clock enable ACK */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ if (val & (1 << 3))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait PLL clock enable ACk failed\n");
+ return -1;
+ }
+
+ /* Configure PHY in A2 Mode */
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0004);
+ /* Wait for Power State A2 Ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
+ if (val & (1 << 6))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait A2 Ack failed\n");
+ return -1;
+ }
+
+ /* Configure PHY in A0 mode (PHY must be in the A0 power
+ * state in order to transmit data)
+ */
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0101);
+
+ /* Wait for Power State A0 Ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
+ if (val & (1 << 4))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait A0 Ack failed\n");
+ return -1;
+ }
+
+ cdns_phy->power_up = true;
+
+ return 0;
+}
+
+static void hdptx_dp_phy_power_down(struct cdns_hdptx_dp_phy *cdns_phy)
+{
+ u16 val;
+ int i;
+
+ if (!cdns_phy->power_up)
+ return;
+
+ /* Place the PHY lanes in the A3 power state. */
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x8);
+ /* Wait for Power State A3 Ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
+ if (val & (1 << 7))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait A3 Ack failed\n");
+ return;
+ }
+
+ /* Disable HDP PLL’s data rate and full rate clocks out of PMA. */
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ val &= ~(1 << 2);
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
+ /* Wait for PLL clock gate ACK */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ if (!(val & (1 << 3)))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait PLL clock gate Ack failed\n");
+ return;
+ }
+
+ /* Disable HDP PLL’s for high speed clocks */
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ val &= ~(1 << 0);
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
+ /* Wait for PLL disable ACK */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ if (!(val & (1 << 1)))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(cdns_phy->dev, "Wait PLL disable Ack failed\n");
+ return;
+ }
+}
+
+static int cdns_hdptx_dp_phy_on(struct phy *phy)
+{
+ struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
+
+ return hdptx_dp_phy_power_up(cdns_phy);
+}
+
+static int cdns_hdptx_dp_phy_off(struct phy *phy)
+{
+ struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
+
+ hdptx_dp_phy_power_down(cdns_phy);
+
+ return 0;
+}
+
+static int cdns_hdptx_dp_phy_init(struct phy *phy)
+{
+ struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
+ int ret;
+
+ hdptx_dp_phy_ref_clock_type(cdns_phy);
+
+ /* PHY power up */
+ ret = hdptx_dp_phy_power_up(cdns_phy);
+ if (ret < 0)
+ return ret;
+
+ hdptx_dp_aux_cfg(cdns_phy);
+
+ return ret;
+}
+
+static int cdns_hdptx_dp_configure(struct phy *phy,
+ union phy_configure_opts *opts)
+{
+ struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
+ int ret;
+
+ cdns_phy->link_rate = opts->dp.link_rate;
+ cdns_phy->num_lanes = opts->dp.lanes;
+
+ if (cdns_phy->link_rate > MAX_LINK_RATE) {
+ dev_err(cdns_phy->dev, "Link Rate(%d) Not supported\n", cdns_phy->link_rate);
+ return false;
+ }
+
+ /* Disable phy clock if PHY in power up state */
+ hdptx_dp_phy_power_down(cdns_phy);
+
+ if (cdns_phy->ref_clk_rate == REF_CLK_27MHZ) {
+ hdptx_dp_phy_pma_cmn_cfg_27mhz(cdns_phy);
+ hdptx_dp_phy_pma_cmn_pll0_27mhz(cdns_phy);
+ } else
+ dev_err(cdns_phy->dev, "Not support ref clock rate\n");
+
+ /* PHY power up */
+ ret = hdptx_dp_phy_power_up(cdns_phy);
+
+ return ret;
+}
+
+static const struct phy_ops cdns_hdptx_dp_phy_ops = {
+ .init = cdns_hdptx_dp_phy_init,
+ .configure = cdns_hdptx_dp_configure,
+ .power_on = cdns_hdptx_dp_phy_on,
+ .power_off = cdns_hdptx_dp_phy_off,
+ .owner = THIS_MODULE,
+};
+
+static int cdns_hdptx_dp_phy_probe(struct platform_device *pdev)
+{
+ struct cdns_hdptx_dp_phy *cdns_phy;
+ struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node;
+ struct phy_provider *phy_provider;
+ struct resource *res;
+ struct phy *phy;
+ int ret;
+
+ cdns_phy = devm_kzalloc(dev, sizeof(*cdns_phy), GFP_KERNEL);
+ if (!cdns_phy)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, cdns_phy);
+ cdns_phy->dev = dev;
+ mutex_init(&cdns_phy->mbox_mutex);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+ cdns_phy->regs = devm_ioremap(dev, res->start, resource_size(res));
+ if (IS_ERR(cdns_phy->regs))
+ return PTR_ERR(cdns_phy->regs);
+
+ phy = devm_phy_create(dev, node, &cdns_hdptx_dp_phy_ops);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+
+ phy->attrs.mode = PHY_MODE_DP;
+ cdns_phy->phy = phy;
+ phy_set_drvdata(phy, cdns_phy);
+
+ ret = hdptx_dp_clk_enable(cdns_phy);
+ if (ret) {
+ dev_err(dev, "Init clk fail\n");
+ return -EINVAL;
+ }
+
+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+ if (IS_ERR(phy_provider)) {
+ ret = PTR_ERR(phy_provider);
+ goto clk_disable;
+ }
+
+ return 0;
+
+clk_disable:
+ hdptx_dp_clk_disable(cdns_phy);
+
+ return -EINVAL;
+}
+
+static int cdns_hdptx_dp_phy_remove(struct platform_device *pdev)
+{
+ struct cdns_hdptx_dp_phy *cdns_phy = platform_get_drvdata(pdev);
+
+ hdptx_dp_clk_disable(cdns_phy);
+
+ return 0;
+}
+
+static const struct of_device_id cdns_hdptx_dp_phy_of_match[] = {
+ {.compatible = "fsl,imx8mq-dp-phy" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, cdns_hdptx_dp_phy_of_match);
+
+static struct platform_driver cdns_hdptx_dp_phy_driver = {
+ .probe = cdns_hdptx_dp_phy_probe,
+ .remove = cdns_hdptx_dp_phy_remove,
+ .driver = {
+ .name = "cdns-hdptx-dp-phy",
+ .of_match_table = cdns_hdptx_dp_phy_of_match,
+ }
+};
+module_platform_driver(cdns_hdptx_dp_phy_driver);
+
+MODULE_AUTHOR("Sandor Yu <[email protected]>");
+MODULE_DESCRIPTION("Cadence HDP-TX DisplayPort PHY driver");
+MODULE_LICENSE("GPL");
--
2.34.1
Add bindings for Freescale iMX8MQ DP and HDMI PHY.
Signed-off-by: Sandor Yu <[email protected]>
---
.../bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml | 53 +++++++++++++++++++
1 file changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
new file mode 100644
index 000000000000..917f113503dc
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/fsl,imx8mq-dp-hdmi-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cadence HDP-TX DP/HDMI PHY for Freescale i.MX8MQ SoC
+
+maintainers:
+ - Sandor Yu <[email protected]>
+
+properties:
+ compatible:
+ enum:
+ - fsl,imx8mq-dp-phy
+ - fsl,imx8mq-hdmi-phy
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: PHY reference clock.
+ - description: APB clock.
+
+ clock-names:
+ items:
+ - const: ref
+ - const: apb
+
+ "#phy-cells":
+ const: 0
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx8mq-clock.h>
+ #include <dt-bindings/phy/phy.h>
+ dp_phy: phy@32c00000 {
+ compatible = "fsl,imx8mq-dp-phy";
+ reg = <0x32c00000 0x100000>;
+ #phy-cells = <0>;
+ clocks = <&hdmi_phy_27m>, <&clk IMX8MQ_CLK_DISP_APB_ROOT>;
+ clock-names = "ref", "apb";
+ };
--
2.34.1
Add bindings for Cadence MHDP8501 DisplayPort and HDMI driver.
Signed-off-by: Sandor Yu <[email protected]>
---
.../display/bridge/cdns,mhdp8501.yaml | 105 ++++++++++++++++++
1 file changed, 105 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
diff --git a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
new file mode 100644
index 000000000000..a54756815e6f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/cdns,mhdp8501.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cadence MHDP8501 Displayport bridge
+
+maintainers:
+ - Sandor Yu <[email protected]>
+
+description:
+ The Cadence MHDP8501 Displayport/HDMI TX interface.
+
+properties:
+ compatible:
+ enum:
+ - cdns,mhdp8501-dp
+ - cdns,mhdp8501-hdmi
+ - fsl,imx8mq-mhdp8501-dp
+ - fsl,imx8mq-mhdp8501-hdmi
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+ description: MHDP8501 DP/HDMI APB clock.
+
+ phys:
+ maxItems: 1
+
+ interrupts:
+ items:
+ - description: Hotplug cable plugin.
+ - description: Hotplug cable plugout.
+
+ interrupt-names:
+ items:
+ - const: plug_in
+ - const: plug_out
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description:
+ Input port from display controller output.
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ description:
+ Output port to DP/HDMI connector.
+
+ required:
+ - port@0
+ - port@1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - interrupts
+ - interrupt-names
+ - phys
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx8mq-clock.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ mhdp_dp: dp-bridge@32c00000 {
+ compatible = "fsl,imx8mq-mhdp8501-dp";
+ reg = <0x32c00000 0x100000>;
+ interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "plug_in", "plug_out";
+ clocks = <&clk IMX8MQ_CLK_DISP_APB_ROOT>;
+ phys = <&dp_phy>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ mhdp_in: endpoint {
+ remote-endpoint = <&dcss_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ mhdp_out: endpoint {
+ remote-endpoint = <&dp_con>;
+ };
+ };
+ };
+ };
--
2.34.1
Add a new DRM DisplayPort bridge driver for Candence MHDP8501
used in i.MX8MQ SOC. MHDP8501 could support HDMI or DisplayPort
standards according embedded Firmware running in the uCPU.
For iMX8MQ SOC, the DisplayPort FW was loaded and activated by SOC
ROM code. Bootload binary included HDMI FW was required for the driver.
Signed-off-by: Sandor Yu <[email protected]>
---
drivers/gpu/drm/bridge/cadence/Kconfig | 13 +
drivers/gpu/drm/bridge/cadence/Makefile | 2 +
.../gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c | 1078 +++++++++++++++++
.../gpu/drm/bridge/cadence/cdns-mhdp8501.h | 399 ++++++
4 files changed, 1492 insertions(+)
create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c
create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501.h
diff --git a/drivers/gpu/drm/bridge/cadence/Kconfig b/drivers/gpu/drm/bridge/cadence/Kconfig
index ec35215a2003..5b7ec4e49aa1 100644
--- a/drivers/gpu/drm/bridge/cadence/Kconfig
+++ b/drivers/gpu/drm/bridge/cadence/Kconfig
@@ -46,3 +46,16 @@ config DRM_CDNS_MHDP8546_J721E
initializes the J721E Display Port and sets up the
clock and data muxes.
endif
+
+config DRM_CDNS_MHDP8501_DP
+ tristate "Cadence MHDP8501 DP DRM driver"
+ select DRM_KMS_HELPER
+ select DRM_PANEL_BRIDGE
+ select DRM_DISPLAY_DP_HELPER
+ select DRM_DISPLAY_HELPER
+ select DRM_CDNS_AUDIO
+ depends on OF
+ help
+ Support Cadence MHDP8501 DisplayPort driver.
+ Cadence MHDP8501 Controller support one or more protocols,
+ DisplayPort firmware is required for this driver.
diff --git a/drivers/gpu/drm/bridge/cadence/Makefile b/drivers/gpu/drm/bridge/cadence/Makefile
index c95fd5b81d13..5842e4540c62 100644
--- a/drivers/gpu/drm/bridge/cadence/Makefile
+++ b/drivers/gpu/drm/bridge/cadence/Makefile
@@ -5,3 +5,5 @@ cdns-dsi-$(CONFIG_DRM_CDNS_DSI_J721E) += cdns-dsi-j721e.o
obj-$(CONFIG_DRM_CDNS_MHDP8546) += cdns-mhdp8546.o
cdns-mhdp8546-y := cdns-mhdp8546-core.o cdns-mhdp8546-hdcp.o
cdns-mhdp8546-$(CONFIG_DRM_CDNS_MHDP8546_J721E) += cdns-mhdp8546-j721e.o
+
+obj-$(CONFIG_DRM_CDNS_MHDP8501_DP) += cdns-mhdp8501-dp.o
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c
new file mode 100644
index 000000000000..6a17e99060cb
--- /dev/null
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c
@@ -0,0 +1,1078 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Cadence Display Port Interface (DP) driver
+ *
+ * Copyright (C) 2019-2022 NXP Semiconductor, Inc.
+ *
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/phy/phy-dp.h>
+
+#include <drm/bridge/cdns-mhdp-mailbox.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_encoder_slave.h>
+#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+#include <drm/drm_print.h>
+#include <drm/display/drm_dp_helper.h>
+
+#include "cdns-mhdp8501.h"
+
+#define LINK_TRAINING_TIMEOUT_MS 500
+#define LINK_TRAINING_RETRY_MS 20
+
+/*
+ * This function only implements native DPDC reads and writes
+ */
+static int cdns_dp_dpcd_read(struct cdns_mhdp_device *mhdp,
+ u32 addr, u8 *data, u16 len)
+{
+ u8 msg[5], reg[5];
+ int ret;
+
+ put_unaligned_be16(len, msg);
+ put_unaligned_be24(addr, msg + 2);
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_READ_DPCD, sizeof(msg), msg);
+ if (ret)
+ goto out;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_READ_DPCD,
+ sizeof(reg) + len);
+ if (ret)
+ goto out;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, reg, sizeof(reg));
+ if (ret)
+ goto out;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, data, len);
+
+out:
+ mutex_unlock(&mhdp->mbox_mutex);
+
+ return ret;
+}
+
+static int cdns_dp_dpcd_write(struct cdns_mhdp_device *mhdp, u32 addr, u8 value)
+{
+ u8 msg[6], reg[5];
+ int ret;
+
+ put_unaligned_be16(1, msg);
+ put_unaligned_be24(addr, msg + 2);
+ msg[5] = value;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_WRITE_DPCD, sizeof(msg), msg);
+ if (ret)
+ goto out;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_WRITE_DPCD, sizeof(reg));
+ if (ret)
+ goto out;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, reg, sizeof(reg));
+ if (ret)
+ goto out;
+
+ if (addr != get_unaligned_be24(reg + 2))
+ ret = -EINVAL;
+
+out:
+ mutex_unlock(&mhdp->mbox_mutex);
+
+ if (ret)
+ dev_err(mhdp->dev, "dpcd write failed: %d\n", ret);
+ return ret;
+}
+
+static ssize_t cdns_dp_aux_transfer(struct drm_dp_aux *aux,
+ struct drm_dp_aux_msg *msg)
+{
+ struct cdns_mhdp_device *mhdp = dev_get_drvdata(aux->dev);
+ bool native = msg->request & (DP_AUX_NATIVE_WRITE & DP_AUX_NATIVE_READ);
+ int ret;
+
+ /* Ignore address only message */
+ if ((msg->size == 0) || (msg->buffer == NULL)) {
+ msg->reply = native ?
+ DP_AUX_NATIVE_REPLY_ACK : DP_AUX_I2C_REPLY_ACK;
+ return msg->size;
+ }
+
+ if (!native) {
+ dev_err(mhdp->dev, "%s: only native messages supported\n", __func__);
+ return -EINVAL;
+ }
+
+ /* msg sanity check */
+ if (msg->size > DP_AUX_MAX_PAYLOAD_BYTES) {
+ dev_err(mhdp->dev, "%s: invalid msg: size(%zu), request(%x)\n",
+ __func__, msg->size, (unsigned int)msg->request);
+ return -EINVAL;
+ }
+
+ if (msg->request == DP_AUX_NATIVE_WRITE) {
+ const u8 *buf = msg->buffer;
+ int i;
+
+ for (i = 0; i < msg->size; ++i) {
+ ret = cdns_dp_dpcd_write(mhdp,
+ msg->address + i, buf[i]);
+ if (!ret)
+ continue;
+
+ DRM_DEV_ERROR(mhdp->dev, "Failed to write DPCD\n");
+
+ return ret;
+ }
+ msg->reply = DP_AUX_NATIVE_REPLY_ACK;
+ return msg->size;
+ }
+
+ if (msg->request == DP_AUX_NATIVE_READ) {
+ ret = cdns_dp_dpcd_read(mhdp, msg->address, msg->buffer, msg->size);
+ if (ret < 0)
+ return -EIO;
+ msg->reply = DP_AUX_NATIVE_REPLY_ACK;
+ return msg->size;
+ }
+ return 0;
+}
+
+static int cdns_dp_aux_destroy(struct cdns_mhdp_device *mhdp)
+{
+ drm_dp_aux_unregister(&mhdp->dp.aux);
+
+ return 0;
+}
+
+static int cdns_dp_get_msa_misc(struct video_info *video,
+ struct drm_display_mode *mode)
+{
+ u32 msa_misc;
+ u8 val[2] = {0};
+
+ switch (video->color_fmt) {
+ /* set YUV default color space conversion to BT601 */
+ case DRM_COLOR_FORMAT_YCBCR444:
+ val[0] = 6 + BT_601 * 8;
+ break;
+ case DRM_COLOR_FORMAT_YCBCR422:
+ val[0] = 5 + BT_601 * 8;
+ break;
+ case DRM_COLOR_FORMAT_YCBCR420:
+ val[0] = 5;
+ break;
+ case DRM_COLOR_FORMAT_RGB444:
+ default:
+ val[0] = 0;
+ break;
+ };
+
+ switch (video->bpc) {
+ case 6:
+ val[1] = 0;
+ break;
+ case 10:
+ val[1] = 2;
+ break;
+ case 12:
+ val[1] = 3;
+ break;
+ case 16:
+ val[1] = 4;
+ break;
+ case 8:
+ default:
+ val[1] = 1;
+ break;
+ };
+
+ msa_misc = 2 * val[0] + 32 * val[1];
+
+ return msa_misc;
+}
+
+static int cdns_dp_config_video(struct cdns_mhdp_device *mhdp)
+{
+ struct video_info *video = &mhdp->video_info;
+ struct drm_display_mode *mode = &mhdp->mode;
+ bool h_sync_polarity, v_sync_polarity;
+ u64 symbol;
+ u32 val, link_rate, rem;
+ u8 bit_per_pix, tu_size_reg = TU_SIZE;
+ int ret;
+
+ bit_per_pix = (video->color_fmt == DRM_COLOR_FORMAT_YCBCR422) ?
+ (video->bpc * 2) : (video->bpc * 3);
+
+ link_rate = mhdp->dp.rate / 1000;
+
+ ret = cdns_mhdp_reg_write(mhdp, BND_HSYNC2VSYNC, VIF_BYPASS_INTERLACE);
+ if (ret)
+ goto err_config_video;
+
+ ret = cdns_mhdp_reg_write(mhdp, HSYNC2VSYNC_POL_CTRL, 0);
+ if (ret)
+ goto err_config_video;
+
+ /*
+ * get a best tu_size and valid symbol:
+ * 1. chose Lclk freq(162Mhz, 270Mhz, 540Mhz), set TU to 32
+ * 2. calculate VS(valid symbol) = TU * Pclk * Bpp / (Lclk * Lanes)
+ * 3. if VS > *.85 or VS < *.1 or VS < 2 or TU < VS + 4, then set
+ * TU += 2 and repeat 2nd step.
+ */
+ do {
+ tu_size_reg += 2;
+ symbol = tu_size_reg * mode->clock * bit_per_pix;
+ do_div(symbol, mhdp->dp.num_lanes * link_rate * 8);
+ rem = do_div(symbol, 1000);
+ if (tu_size_reg > 64) {
+ ret = -EINVAL;
+ DRM_DEV_ERROR(mhdp->dev,
+ "tu error, clk:%d, lanes:%d, rate:%d\n",
+ mode->clock, mhdp->dp.num_lanes, link_rate);
+ goto err_config_video;
+ }
+ } while ((symbol <= 1) || (tu_size_reg - symbol < 4) ||
+ (rem > 850) || (rem < 100));
+
+ val = symbol + (tu_size_reg << 8);
+ val |= TU_CNT_RST_EN;
+ ret = cdns_mhdp_reg_write(mhdp, DP_FRAMER_TU, val);
+ if (ret)
+ goto err_config_video;
+
+ /* set the FIFO Buffer size */
+ val = div_u64(mode->clock * (symbol + 1), 1000) + link_rate;
+ val /= (mhdp->dp.num_lanes * link_rate);
+ val = div_u64(8 * (symbol + 1), bit_per_pix) - val;
+ val += 2;
+ ret = cdns_mhdp_reg_write(mhdp, DP_VC_TABLE(15), val);
+
+ switch (video->bpc) {
+ case 6:
+ val = BCS_6;
+ break;
+ case 10:
+ val = BCS_10;
+ break;
+ case 12:
+ val = BCS_12;
+ break;
+ case 16:
+ val = BCS_16;
+ break;
+ case 8:
+ default:
+ val = BCS_8;
+ break;
+ };
+
+ val += video->color_fmt << 8;
+ ret = cdns_mhdp_reg_write(mhdp, DP_FRAMER_PXL_REPR, val);
+ if (ret)
+ goto err_config_video;
+
+ v_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NVSYNC);
+ h_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NHSYNC);
+
+ val = h_sync_polarity ? DP_FRAMER_SP_HSP : 0;
+ val |= v_sync_polarity ? DP_FRAMER_SP_VSP : 0;
+ ret = cdns_mhdp_reg_write(mhdp, DP_FRAMER_SP, val);
+ if (ret)
+ goto err_config_video;
+
+ val = (mode->hsync_start - mode->hdisplay) << 16;
+ val |= mode->htotal - mode->hsync_end;
+ ret = cdns_mhdp_reg_write(mhdp, DP_FRONT_BACK_PORCH, val);
+ if (ret)
+ goto err_config_video;
+
+ val = mode->hdisplay * bit_per_pix / 8;
+ ret = cdns_mhdp_reg_write(mhdp, DP_BYTE_COUNT, val);
+ if (ret)
+ goto err_config_video;
+
+ val = mode->htotal | ((mode->htotal - mode->hsync_start) << 16);
+ ret = cdns_mhdp_reg_write(mhdp, MSA_HORIZONTAL_0, val);
+ if (ret)
+ goto err_config_video;
+
+ val = mode->hsync_end - mode->hsync_start;
+ val |= (mode->hdisplay << 16) | (h_sync_polarity << 15);
+ ret = cdns_mhdp_reg_write(mhdp, MSA_HORIZONTAL_1, val);
+ if (ret)
+ goto err_config_video;
+
+ val = mode->vtotal;
+ val |= (mode->vtotal - mode->vsync_start) << 16;
+ ret = cdns_mhdp_reg_write(mhdp, MSA_VERTICAL_0, val);
+ if (ret)
+ goto err_config_video;
+
+ val = mode->vsync_end - mode->vsync_start;
+ val |= (mode->vdisplay << 16) | (v_sync_polarity << 15);
+ ret = cdns_mhdp_reg_write(mhdp, MSA_VERTICAL_1, val);
+ if (ret)
+ goto err_config_video;
+
+ val = cdns_dp_get_msa_misc(video, mode);
+ ret = cdns_mhdp_reg_write(mhdp, MSA_MISC, val);
+ if (ret)
+ goto err_config_video;
+
+ ret = cdns_mhdp_reg_write(mhdp, STREAM_CONFIG, 1);
+ if (ret)
+ goto err_config_video;
+
+ val = mode->hsync_end - mode->hsync_start;
+ val |= mode->hdisplay << 16;
+ ret = cdns_mhdp_reg_write(mhdp, DP_HORIZONTAL, val);
+ if (ret)
+ goto err_config_video;
+
+ val = mode->vdisplay;
+ val |= (mode->vtotal - mode->vsync_start) << 16;
+ ret = cdns_mhdp_reg_write(mhdp, DP_VERTICAL_0, val);
+ if (ret)
+ goto err_config_video;
+
+ val = mode->vtotal;
+ ret = cdns_mhdp_reg_write(mhdp, DP_VERTICAL_1, val);
+ if (ret)
+ goto err_config_video;
+
+ ret = cdns_mhdp_reg_write_bit(mhdp, DP_VB_ID, 2, 1, 0);
+
+err_config_video:
+ if (ret)
+ DRM_DEV_ERROR(mhdp->dev, "config video failed: %d\n", ret);
+ return ret;
+}
+
+static void cdns_dp_pixel_clk_reset(struct cdns_mhdp_device *mhdp)
+{
+ u32 val;
+
+ /* reset pixel clk */
+ cdns_mhdp_reg_read(mhdp, SOURCE_HDTX_CAR, &val);
+ cdns_mhdp_reg_write(mhdp, SOURCE_HDTX_CAR, val & 0xFD);
+ cdns_mhdp_reg_write(mhdp, SOURCE_HDTX_CAR, val);
+}
+
+static int cdns_dp_set_video_status(struct cdns_mhdp_device *mhdp, int active)
+{
+ u8 msg;
+ int ret;
+
+ msg = !!active;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX, DPTX_SET_VIDEO,
+ sizeof(msg), &msg);
+ if (ret)
+ DRM_DEV_ERROR(mhdp->dev, "set video status failed: %d\n", ret);
+
+ mutex_unlock(&mhdp->mbox_mutex);
+
+ return ret;
+}
+
+static int cdns_dp_training_start(struct cdns_mhdp_device *mhdp)
+{
+ unsigned long timeout;
+ u8 msg, event[2];
+ int ret;
+
+ msg = LINK_TRAINING_RUN;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ /* start training */
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_TRAINING_CONTROL, sizeof(msg), &msg);
+ if (ret)
+ goto err_training_start;
+
+ timeout = jiffies + msecs_to_jiffies(LINK_TRAINING_TIMEOUT_MS);
+ while (time_before(jiffies, timeout)) {
+ msleep(LINK_TRAINING_RETRY_MS);
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_READ_EVENT, 0, NULL);
+ if (ret)
+ goto err_training_start;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp,
+ MB_MODULE_ID_DP_TX,
+ DPTX_READ_EVENT,
+ sizeof(event));
+ if (ret)
+ goto err_training_start;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, event,
+ sizeof(event));
+ if (ret)
+ goto err_training_start;
+
+ if (event[1] & CLK_RECOVERY_FAILED)
+ DRM_DEV_ERROR(mhdp->dev, "clock recovery failed\n");
+ else if (event[1] & EQ_PHASE_FINISHED) {
+ mutex_unlock(&mhdp->mbox_mutex);
+ return 0;
+ }
+ }
+
+ ret = -ETIMEDOUT;
+
+err_training_start:
+ mutex_unlock(&mhdp->mbox_mutex);
+
+ DRM_DEV_ERROR(mhdp->dev, "training failed: %d\n", ret);
+ return ret;
+}
+
+static int cdns_dp_get_training_status(struct cdns_mhdp_device *mhdp)
+{
+ u8 status[13];
+ int ret;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_READ_LINK_STAT, 0, NULL);
+ if (ret)
+ goto err_get_training_status;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_READ_LINK_STAT,
+ sizeof(status));
+ if (ret)
+ goto err_get_training_status;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, status, sizeof(status));
+ if (ret)
+ goto err_get_training_status;
+
+ mhdp->dp.rate = drm_dp_bw_code_to_link_rate(status[0]);
+ mhdp->dp.num_lanes = status[1];
+
+err_get_training_status:
+ mutex_unlock(&mhdp->mbox_mutex);
+
+ if (ret)
+ DRM_DEV_ERROR(mhdp->dev, "get training status failed: %d\n",
+ ret);
+ return ret;
+}
+
+static int cdns_dp_train_link(struct cdns_mhdp_device *mhdp)
+{
+ int ret;
+
+ ret = cdns_dp_training_start(mhdp);
+ if (ret) {
+ DRM_DEV_ERROR(mhdp->dev, "Failed to start training %d\n",
+ ret);
+ return ret;
+ }
+
+ ret = cdns_dp_get_training_status(mhdp);
+ if (ret) {
+ DRM_DEV_ERROR(mhdp->dev, "Failed to get training stat %d\n",
+ ret);
+ return ret;
+ }
+
+ DRM_DEV_DEBUG_KMS(mhdp->dev, "rate:0x%x, lanes:%d\n", mhdp->dp.rate,
+ mhdp->dp.num_lanes);
+ return ret;
+}
+
+int cdns_dp_set_host_cap(struct cdns_mhdp_device *mhdp)
+{
+ u8 msg[8];
+ int ret;
+
+ msg[0] = drm_dp_link_rate_to_bw_code(mhdp->dp.rate);
+ msg[1] = mhdp->dp.num_lanes | SCRAMBLER_EN;
+ msg[2] = VOLTAGE_LEVEL_2;
+ msg[3] = PRE_EMPHASIS_LEVEL_3;
+ msg[4] = PTS1 | PTS2 | PTS3 | PTS4;
+ msg[5] = FAST_LT_NOT_SUPPORT;
+ msg[6] = mhdp->lane_mapping;
+ msg[7] = ENHANCED;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_SET_HOST_CAPABILITIES,
+ sizeof(msg), msg);
+
+ mutex_unlock(&mhdp->mbox_mutex);
+
+ if (ret)
+ DRM_DEV_ERROR(mhdp->dev, "set host cap failed: %d\n", ret);
+
+ return ret;
+}
+
+static int cdns_dp_get_edid_block(void *data, u8 *edid,
+ unsigned int block, size_t length)
+{
+ struct cdns_mhdp_device *mhdp = data;
+ u8 msg[2], reg[2], i;
+ int ret;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ for (i = 0; i < 4; i++) {
+ msg[0] = block / 2;
+ msg[1] = block % 2;
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_GET_EDID, sizeof(msg), msg);
+ if (ret)
+ continue;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp,
+ MB_MODULE_ID_DP_TX,
+ DPTX_GET_EDID,
+ sizeof(reg) + length);
+ if (ret)
+ continue;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, reg, sizeof(reg));
+ if (ret)
+ continue;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, edid, length);
+ if (ret)
+ continue;
+
+ if (reg[0] == length && reg[1] == block / 2)
+ break;
+ }
+
+ if (ret)
+ DRM_DEV_ERROR(mhdp->dev, "get block[%d] edid failed: %d\n",
+ block, ret);
+
+ mutex_unlock(&mhdp->mbox_mutex);
+ return ret;
+}
+
+static int cdns_dp_read_hpd(struct cdns_mhdp_device *mhdp)
+{
+ u8 status;
+ int ret;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX, DPTX_HPD_STATE,
+ 0, NULL);
+ if (ret)
+ goto err_get_hpd;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_DP_TX,
+ DPTX_HPD_STATE, sizeof(status));
+ if (ret)
+ goto err_get_hpd;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, &status, sizeof(status));
+ if (ret)
+ goto err_get_hpd;
+
+ mutex_unlock(&mhdp->mbox_mutex);
+ return status;
+
+err_get_hpd:
+ mutex_unlock(&mhdp->mbox_mutex);
+ DRM_ERROR("read hpd failed: %d\n", ret);
+ return ret;
+}
+
+static void cdns_dp_mode_set(struct cdns_mhdp_device *mhdp)
+{
+ union phy_configure_opts phy_cfg;
+ int ret;
+
+ cdns_dp_pixel_clk_reset(mhdp);
+
+ /* Get DP Caps */
+ ret = drm_dp_dpcd_read(&mhdp->dp.aux, DP_DPCD_REV, mhdp->dp.dpcd,
+ DP_RECEIVER_CAP_SIZE);
+ if (ret < 0) {
+ DRM_ERROR("Failed to get caps %d\n", ret);
+ return;
+ }
+
+ mhdp->dp.rate = drm_dp_max_link_rate(mhdp->dp.dpcd);
+ mhdp->dp.num_lanes = drm_dp_max_lane_count(mhdp->dp.dpcd);
+
+ /* check the max link rate */
+ if (mhdp->dp.rate > CDNS_DP_MAX_LINK_RATE)
+ mhdp->dp.rate = CDNS_DP_MAX_LINK_RATE;
+
+ phy_cfg.dp.lanes = mhdp->dp.num_lanes;
+ phy_cfg.dp.link_rate = mhdp->dp.rate;
+ phy_cfg.dp.set_lanes = false;
+ phy_cfg.dp.set_rate = false;
+ phy_cfg.dp.set_voltages = true;
+
+ /* Mailbox protect for DP PHY access */
+ mutex_lock(&mhdp->mbox_mutex);
+ ret = phy_configure(mhdp->phy, &phy_cfg);
+ mutex_unlock(&mhdp->mbox_mutex);
+ if (ret) {
+ dev_err(mhdp->dev, "%s: phy_configure() failed: %d\n",
+ __func__, ret);
+ return;
+ }
+
+ /* Video off */
+ ret = cdns_dp_set_video_status(mhdp, CONTROL_VIDEO_IDLE);
+ if (ret) {
+ DRM_DEV_ERROR(mhdp->dev, "Failed to valid video %d\n", ret);
+ return;
+ }
+
+ /* Line swapping */
+ mhdp->lane_mapping = mhdp->plat_data->lane_mapping;
+ cdns_mhdp_reg_write(mhdp, LANES_CONFIG, 0x00400000 | mhdp->lane_mapping);
+
+ /* Set DP host capability */
+ ret = cdns_dp_set_host_cap(mhdp);
+ if (ret) {
+ DRM_DEV_ERROR(mhdp->dev, "Failed to set host cap %d\n", ret);
+ return;
+ }
+
+ ret = cdns_mhdp_reg_write(mhdp, DP_AUX_SWAP_INVERSION_CONTROL,
+ AUX_HOST_INVERT);
+ if (ret) {
+ DRM_DEV_ERROR(mhdp->dev, "Failed to set host invert %d\n", ret);
+ return;
+ }
+
+ ret = cdns_dp_config_video(mhdp);
+ if (ret) {
+ DRM_DEV_ERROR(mhdp->dev, "Failed to config video %d\n", ret);
+ return;
+ }
+}
+
+static int cdns_dp_connector_get_modes(struct drm_connector *connector)
+{
+ struct cdns_mhdp_device *mhdp = container_of(connector,
+ struct cdns_mhdp_device, connector);
+ int num_modes = 0;
+ struct edid *edid;
+
+ edid = drm_do_get_edid(&mhdp->connector,
+ cdns_dp_get_edid_block, mhdp);
+ if (edid) {
+ dev_info(mhdp->dev, "%x,%x,%x,%x,%x,%x,%x,%x\n",
+ edid->header[0], edid->header[1],
+ edid->header[2], edid->header[3],
+ edid->header[4], edid->header[5],
+ edid->header[6], edid->header[7]);
+ drm_connector_update_edid_property(connector, edid);
+ num_modes = drm_add_edid_modes(connector, edid);
+ kfree(edid);
+ }
+
+ if (num_modes == 0)
+ DRM_ERROR("Invalid edid\n");
+ return num_modes;
+}
+
+static const struct drm_connector_funcs cdns_dp_connector_funcs = {
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = drm_connector_cleanup,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static const struct drm_connector_helper_funcs cdns_dp_connector_helper_funcs = {
+ .get_modes = cdns_dp_connector_get_modes,
+};
+
+static int cdns_dp_bridge_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+ struct drm_encoder *encoder = bridge->encoder;
+ struct drm_connector *connector = &mhdp->connector;
+ int ret;
+
+ if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+ connector->interlace_allowed = 0;
+
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+
+ drm_connector_helper_add(connector, &cdns_dp_connector_helper_funcs);
+
+ drm_connector_init(bridge->dev, connector, &cdns_dp_connector_funcs,
+ DRM_MODE_CONNECTOR_DisplayPort);
+
+ drm_connector_attach_encoder(connector, encoder);
+ }
+
+ mhdp->dp.aux.drm_dev = bridge->dev;
+ ret = drm_dp_aux_register(&mhdp->dp.aux);
+
+ return ret;
+}
+
+static enum drm_mode_status
+cdns_dp_bridge_mode_valid(struct drm_bridge *bridge,
+ const struct drm_display_info *info,
+ const struct drm_display_mode *mode)
+{
+ enum drm_mode_status mode_status = MODE_OK;
+
+ /* We don't support double-clocked modes */
+ if (mode->flags & DRM_MODE_FLAG_DBLCLK ||
+ mode->flags & DRM_MODE_FLAG_INTERLACE)
+ return MODE_BAD;
+
+ /* MAX support pixel clock rate 594MHz */
+ if (mode->clock > 594000)
+ return MODE_CLOCK_HIGH;
+
+ /* 4096x2160 is not supported */
+ if (mode->hdisplay > 3840)
+ return MODE_BAD_HVALUE;
+
+ if (mode->vdisplay > 2160)
+ return MODE_BAD_VVALUE;
+
+ return mode_status;
+}
+
+static enum drm_connector_status cdns_dp_detect(struct cdns_mhdp_device *mhdp)
+{
+ u8 hpd = 0xf;
+
+ hpd = cdns_dp_read_hpd(mhdp);
+ if (hpd == 1)
+ return connector_status_connected;
+ else if (hpd == 0)
+ return connector_status_disconnected;
+
+ DRM_INFO("Unknown cable status, hdp=%u\n", hpd);
+ return connector_status_unknown;
+}
+
+static enum drm_connector_status
+cdns_dp_bridge_detect(struct drm_bridge *bridge)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+
+ return cdns_dp_detect(mhdp);
+}
+
+static struct edid *cdns_dp_bridge_get_edid(struct drm_bridge *bridge,
+ struct drm_connector *connector)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+
+ return drm_do_get_edid(connector, cdns_dp_get_edid_block, mhdp);
+}
+
+static void cdns_dp_bridge_atomic_disable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_state)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+
+ cdns_dp_set_video_status(mhdp, CONTROL_VIDEO_IDLE);
+ mhdp->curr_conn = NULL;
+
+ /* Mailbox protect for DP PHY access */
+ mutex_lock(&mhdp->mbox_mutex);
+ phy_power_off(mhdp->phy);
+ mutex_unlock(&mhdp->mbox_mutex);
+}
+
+static void cdns_dp_bridge_atomic_enable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_state)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+ struct drm_atomic_state *state = old_state->base.state;
+ struct drm_connector *connector;
+ struct video_info *video = &mhdp->video_info;
+ struct drm_crtc_state *crtc_state;
+ struct drm_connector_state *conn_state;
+ const struct drm_display_mode *mode;
+ int ret;
+
+ connector = drm_atomic_get_new_connector_for_encoder(state,
+ bridge->encoder);
+ if (WARN_ON(!connector))
+ return;
+
+ mhdp->curr_conn = connector;
+
+ conn_state = drm_atomic_get_new_connector_state(state, connector);
+ if (WARN_ON(!conn_state))
+ return;
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
+ if (WARN_ON(!crtc_state))
+ return;
+
+ mode = &crtc_state->adjusted_mode;
+
+ switch (connector->display_info.bpc) {
+ case 10:
+ video->bpc = 10;
+ break;
+ case 6:
+ video->bpc = 6;
+ break;
+ default:
+ video->bpc = 8;
+ break;
+ }
+
+ /* The only currently supported format */
+ video->color_fmt = DRM_COLOR_FORMAT_RGB444;
+
+ DRM_INFO("Mode: %dx%dp%d\n", mode->hdisplay, mode->vdisplay, mode->clock);
+ memcpy(&mhdp->mode, mode, sizeof(struct drm_display_mode));
+
+ cdns_dp_mode_set(mhdp);
+
+ /* Link trainning */
+ ret = cdns_dp_train_link(mhdp);
+ if (ret) {
+ DRM_DEV_ERROR(mhdp->dev, "Failed link train %d\n", ret);
+ return;
+ }
+
+ ret = cdns_dp_set_video_status(mhdp, CONTROL_VIDEO_VALID);
+ if (ret) {
+ DRM_DEV_ERROR(mhdp->dev, "Failed to valid video %d\n", ret);
+ return;
+ }
+}
+
+static const struct drm_bridge_funcs cdns_dp_bridge_funcs = {
+ .attach = cdns_dp_bridge_attach,
+ .mode_valid = cdns_dp_bridge_mode_valid,
+ .detect = cdns_dp_bridge_detect,
+ .get_edid = cdns_dp_bridge_get_edid,
+ .atomic_enable = cdns_dp_bridge_atomic_enable,
+ .atomic_disable = cdns_dp_bridge_atomic_disable,
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
+};
+
+static void hotplug_work_func(struct work_struct *work)
+{
+ struct cdns_mhdp_device *mhdp = container_of(work,
+ struct cdns_mhdp_device, hotplug_work.work);
+ enum drm_connector_status status = cdns_dp_detect(mhdp);
+
+ drm_bridge_hpd_notify(&mhdp->bridge, status);
+
+ if (status == connector_status_connected) {
+ /* Cable connedted */
+ DRM_INFO("HDMI/DP Cable Plug In\n");
+ enable_irq(mhdp->irq[IRQ_OUT]);
+ } else if (status == connector_status_disconnected) {
+ /* Cable Disconnedted */
+ DRM_INFO("HDMI/DP Cable Plug Out\n");
+ enable_irq(mhdp->irq[IRQ_IN]);
+ }
+}
+
+static irqreturn_t cdns_dp_irq_thread(int irq, void *data)
+{
+ struct cdns_mhdp_device *mhdp = data;
+
+ disable_irq_nosync(irq);
+
+ mod_delayed_work(system_wq, &mhdp->hotplug_work,
+ msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS));
+
+ return IRQ_HANDLED;
+}
+
+static int cdns_mhdp_dp_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct cdns_mhdp_device *mhdp;
+ struct resource *res;
+ u32 reg;
+ int ret;
+
+ mhdp = devm_kzalloc(dev, sizeof(*mhdp), GFP_KERNEL);
+ if (!mhdp)
+ return -ENOMEM;
+
+ mutex_init(&mhdp->mbox_mutex);
+ mhdp->dev = dev;
+
+ INIT_DELAYED_WORK(&mhdp->hotplug_work, hotplug_work_func);
+
+ drm_dp_aux_init(&mhdp->dp.aux);
+ mhdp->dp.aux.name = "imx_dp_aux";
+ mhdp->dp.aux.dev = dev;
+ mhdp->dp.aux.transfer = cdns_dp_aux_transfer;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+ mhdp->regs = devm_ioremap(dev, res->start, resource_size(res));
+ if (IS_ERR(mhdp->regs))
+ return PTR_ERR(mhdp->regs);
+
+ mhdp->phy = devm_of_phy_get_by_index(dev, pdev->dev.of_node, 0);
+ if (IS_ERR(mhdp->phy))
+ return dev_err_probe(dev, PTR_ERR(mhdp->phy), "no PHY configured\n");
+
+ mhdp->irq[IRQ_IN] = platform_get_irq_byname(pdev, "plug_in");
+ if (mhdp->irq[IRQ_IN] < 0)
+ return dev_err_probe(dev, mhdp->irq[IRQ_IN], "No plug_in irq number\n");
+
+ mhdp->irq[IRQ_OUT] = platform_get_irq_byname(pdev, "plug_out");
+ if (mhdp->irq[IRQ_OUT] < 0)
+ return dev_err_probe(dev, mhdp->irq[IRQ_OUT], "No plug_out irq number\n");
+
+ irq_set_status_flags(mhdp->irq[IRQ_IN], IRQ_NOAUTOEN);
+ ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_IN],
+ NULL, cdns_dp_irq_thread,
+ IRQF_ONESHOT, dev_name(dev),
+ mhdp);
+ if (ret) {
+ dev_err(dev, "can't claim irq %d\n", mhdp->irq[IRQ_IN]);
+ return -EINVAL;
+ }
+
+ irq_set_status_flags(mhdp->irq[IRQ_OUT], IRQ_NOAUTOEN);
+ ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_OUT],
+ NULL, cdns_dp_irq_thread,
+ IRQF_ONESHOT, dev_name(dev),
+ mhdp);
+ if (ret) {
+ dev_err(dev, "can't claim irq %d\n", mhdp->irq[IRQ_OUT]);
+ return -EINVAL;
+ }
+
+ mhdp->plat_data = of_device_get_match_data(dev);
+ dev_set_drvdata(dev, mhdp);
+
+ /* Enable APB clock */
+ mhdp->apb_clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(mhdp->apb_clk))
+ return dev_err_probe(dev, PTR_ERR(mhdp->apb_clk), "couldn't get clk\n");
+
+ clk_prepare_enable(mhdp->apb_clk);
+
+ /*
+ * Wait for the KEEP_ALIVE "message" on the first 8 bits.
+ * Updated each sched "tick" (~2ms)
+ */
+ ret = readl_poll_timeout(mhdp->regs + KEEP_ALIVE, reg,
+ reg & CDNS_KEEP_ALIVE_MASK, 500,
+ CDNS_KEEP_ALIVE_TIMEOUT);
+ if (ret) {
+ dev_err(dev,
+ "device didn't give any life sign: reg %d\n", reg);
+ goto clk_disable;
+ }
+
+ /* Mailbox protect for DP PHY access */
+ mutex_lock(&mhdp->mbox_mutex);
+ /* DP PHY init before AUX init */
+ ret = phy_init(mhdp->phy);
+ mutex_unlock(&mhdp->mbox_mutex);
+ if (ret) {
+ dev_err(dev, "Failed to initialize PHY: %d\n", ret);
+ goto clk_disable;
+ }
+
+ /* Enable Hotplug Detect IRQ */
+ if (cdns_dp_read_hpd(mhdp))
+ enable_irq(mhdp->irq[IRQ_OUT]);
+ else
+ enable_irq(mhdp->irq[IRQ_IN]);
+
+ mhdp->bridge.driver_private = mhdp;
+ mhdp->bridge.funcs = &cdns_dp_bridge_funcs;
+ mhdp->bridge.of_node = dev->of_node;
+ mhdp->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
+ DRM_BRIDGE_OP_HPD;
+ mhdp->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
+ drm_bridge_add(&mhdp->bridge);
+
+ return 0;
+
+clk_disable:
+ clk_disable_unprepare(mhdp->apb_clk);
+
+ return -EINVAL;
+}
+
+static int cdns_mhdp_dp_remove(struct platform_device *pdev)
+{
+ struct cdns_mhdp_device *mhdp = platform_get_drvdata(pdev);
+
+ cdns_dp_aux_destroy(mhdp);
+
+ return 0;
+}
+
+static struct cdns_plat_data imx8mq_dp_drv_data = {
+ .lane_mapping = 0xc6,
+};
+
+static const struct of_device_id cdns_mhdp_dp_dt_ids[] = {
+ { .compatible = "cdns,mhdp8501-dp", },
+ { .compatible = "fsl,imx8mq-mhdp8501-dp",
+ .data = &imx8mq_dp_drv_data
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, cdns_mhdp_dp_dt_ids);
+
+static struct platform_driver cdns_mhdp_dp_platform_driver = {
+ .probe = cdns_mhdp_dp_probe,
+ .remove = cdns_mhdp_dp_remove,
+ .driver = {
+ .name = "cdns-mhdp8501-dp",
+ .of_match_table = cdns_mhdp_dp_dt_ids,
+ },
+};
+
+module_platform_driver(cdns_mhdp_dp_platform_driver);
+
+MODULE_AUTHOR("Sandor Yu <[email protected]>");
+MODULE_DESCRIPTION("Cadence MHDP8501 Display Port transmitter driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:cdns-mhdp8501-dp");
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501.h b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501.h
new file mode 100644
index 000000000000..62466ba7f813
--- /dev/null
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501.h
@@ -0,0 +1,399 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Cadence MHDP 8501 Common head file
+ *
+ * Copyright (C) 2019-2022 NXP Semiconductor, Inc.
+ *
+ */
+
+#ifndef _CDNS_MHDP_COMMON_H_
+#define _CDNS_MHDP_COMMON_H_
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_connector.h>
+#include <drm/display/drm_dp_helper.h>
+#include <linux/bitops.h>
+
+#define ADDR_IMEM 0x10000
+#define ADDR_DMEM 0x20000
+
+/* APB CFG addr */
+#define APB_CTRL 0
+#define XT_INT_CTRL 0x04
+#define MAILBOX_FULL_ADDR 0x08
+#define MAILBOX_EMPTY_ADDR 0x0c
+#define MAILBOX0_WR_DATA 0x10
+#define MAILBOX0_RD_DATA 0x14
+#define KEEP_ALIVE 0x18
+#define VER_L 0x1c
+#define VER_H 0x20
+#define VER_LIB_L_ADDR 0x24
+#define VER_LIB_H_ADDR 0x28
+#define SW_DEBUG_L 0x2c
+#define SW_DEBUG_H 0x30
+#define MAILBOX_INT_MASK 0x34
+#define MAILBOX_INT_STATUS 0x38
+#define SW_CLK_L 0x3c
+#define SW_CLK_H 0x40
+#define SW_EVENTS0 0x44
+#define SW_EVENTS1 0x48
+#define SW_EVENTS2 0x4c
+#define SW_EVENTS3 0x50
+#define XT_OCD_CTRL 0x60
+#define APB_INT_MASK 0x6c
+#define APB_STATUS_MASK 0x70
+
+/* source phy comp */
+#define PHY_DATA_SEL 0x0818
+#define LANES_CONFIG 0x0814
+
+/* source car addr */
+#define SOURCE_HDTX_CAR 0x0900
+#define SOURCE_DPTX_CAR 0x0904
+#define SOURCE_PHY_CAR 0x0908
+#define SOURCE_CEC_CAR 0x090c
+#define SOURCE_CBUS_CAR 0x0910
+#define SOURCE_PKT_CAR 0x0918
+#define SOURCE_AIF_CAR 0x091c
+#define SOURCE_CIPHER_CAR 0x0920
+#define SOURCE_CRYPTO_CAR 0x0924
+
+/* clock meters addr */
+#define CM_CTRL 0x0a00
+#define CM_I2S_CTRL 0x0a04
+#define CM_SPDIF_CTRL 0x0a08
+#define CM_VID_CTRL 0x0a0c
+#define CM_LANE_CTRL 0x0a10
+#define I2S_NM_STABLE 0x0a14
+#define I2S_NCTS_STABLE 0x0a18
+#define SPDIF_NM_STABLE 0x0a1c
+#define SPDIF_NCTS_STABLE 0x0a20
+#define NMVID_MEAS_STABLE 0x0a24
+#define I2S_MEAS 0x0a40
+#define SPDIF_MEAS 0x0a80
+#define NMVID_MEAS 0x0ac0
+
+/* source vif addr */
+#define BND_HSYNC2VSYNC 0x0b00
+#define HSYNC2VSYNC_F1_L1 0x0b04
+#define HSYNC2VSYNC_STATUS 0x0b0c
+#define HSYNC2VSYNC_POL_CTRL 0x0b10
+
+/* mhdp tx_top_comp */
+#define SCHEDULER_H_SIZE 0x1000
+#define SCHEDULER_V_SIZE 0x1004
+#define HDTX_SIGNAL_FRONT_WIDTH 0x100c
+#define HDTX_SIGNAL_SYNC_WIDTH 0x1010
+#define HDTX_SIGNAL_BACK_WIDTH 0x1014
+#define HDTX_CONTROLLER 0x1018
+#define HDTX_HPD 0x1020
+#define HDTX_CLOCK_REG_0 0x1024
+#define HDTX_CLOCK_REG_1 0x1028
+
+/* DPTX hpd addr */
+#define HPD_IRQ_DET_MIN_TIMER 0x2100
+#define HPD_IRQ_DET_MAX_TIMER 0x2104
+#define HPD_UNPLGED_DET_MIN_TIMER 0x2108
+#define HPD_STABLE_TIMER 0x210c
+#define HPD_FILTER_TIMER 0x2110
+#define HPD_EVENT_MASK 0x211c
+#define HPD_EVENT_DET 0x2120
+
+/* DPTX framer addr */
+#define DP_FRAMER_GLOBAL_CONFIG 0x2200
+#define DP_SW_RESET 0x2204
+#define DP_FRAMER_TU 0x2208
+#define DP_FRAMER_PXL_REPR 0x220c
+#define DP_FRAMER_SP 0x2210
+#define AUDIO_PACK_CONTROL 0x2214
+#define DP_VC_TABLE(x) (0x2218 + ((x) << 2))
+#define DP_VB_ID 0x2258
+#define DP_MTPH_LVP_CONTROL 0x225c
+#define DP_MTPH_SYMBOL_VALUES 0x2260
+#define DP_MTPH_ECF_CONTROL 0x2264
+#define DP_MTPH_ACT_CONTROL 0x2268
+#define DP_MTPH_STATUS 0x226c
+#define DP_INTERRUPT_SOURCE 0x2270
+#define DP_INTERRUPT_MASK 0x2274
+#define DP_FRONT_BACK_PORCH 0x2278
+#define DP_BYTE_COUNT 0x227c
+
+/* dptx stream addr */
+#define MSA_HORIZONTAL_0 0x2280
+#define MSA_HORIZONTAL_1 0x2284
+#define MSA_VERTICAL_0 0x2288
+#define MSA_VERTICAL_1 0x228c
+#define MSA_MISC 0x2290
+#define STREAM_CONFIG 0x2294
+#define AUDIO_PACK_STATUS 0x2298
+#define VIF_STATUS 0x229c
+#define PCK_STUFF_STATUS_0 0x22a0
+#define PCK_STUFF_STATUS_1 0x22a4
+#define INFO_PACK_STATUS 0x22a8
+#define RATE_GOVERNOR_STATUS 0x22ac
+#define DP_HORIZONTAL 0x22b0
+#define DP_VERTICAL_0 0x22b4
+#define DP_VERTICAL_1 0x22b8
+#define DP_BLOCK_SDP 0x22bc
+
+/* dptx glbl addr */
+#define DPTX_LANE_EN 0x2300
+#define DPTX_ENHNCD 0x2304
+#define DPTX_INT_MASK 0x2308
+#define DPTX_INT_STATUS 0x230c
+
+/* dp aux addr */
+#define DP_AUX_HOST_CONTROL 0x2800
+#define DP_AUX_INTERRUPT_SOURCE 0x2804
+#define DP_AUX_INTERRUPT_MASK 0x2808
+#define DP_AUX_SWAP_INVERSION_CONTROL 0x280c
+#define DP_AUX_SEND_NACK_TRANSACTION 0x2810
+#define DP_AUX_CLEAR_RX 0x2814
+#define DP_AUX_CLEAR_TX 0x2818
+#define DP_AUX_TIMER_STOP 0x281c
+#define DP_AUX_TIMER_CLEAR 0x2820
+#define DP_AUX_RESET_SW 0x2824
+#define DP_AUX_DIVIDE_2M 0x2828
+#define DP_AUX_TX_PREACHARGE_LENGTH 0x282c
+#define DP_AUX_FREQUENCY_1M_MAX 0x2830
+#define DP_AUX_FREQUENCY_1M_MIN 0x2834
+#define DP_AUX_RX_PRE_MIN 0x2838
+#define DP_AUX_RX_PRE_MAX 0x283c
+#define DP_AUX_TIMER_PRESET 0x2840
+#define DP_AUX_NACK_FORMAT 0x2844
+#define DP_AUX_TX_DATA 0x2848
+#define DP_AUX_RX_DATA 0x284c
+#define DP_AUX_TX_STATUS 0x2850
+#define DP_AUX_RX_STATUS 0x2854
+#define DP_AUX_RX_CYCLE_COUNTER 0x2858
+#define DP_AUX_MAIN_STATES 0x285c
+#define DP_AUX_MAIN_TIMER 0x2860
+#define DP_AUX_AFE_OUT 0x2864
+
+/* source pif addr */
+#define SOURCE_PIF_WR_ADDR 0x30800
+#define SOURCE_PIF_WR_REQ 0x30804
+#define SOURCE_PIF_RD_ADDR 0x30808
+#define SOURCE_PIF_RD_REQ 0x3080c
+#define SOURCE_PIF_DATA_WR 0x30810
+#define SOURCE_PIF_DATA_RD 0x30814
+#define SOURCE_PIF_FIFO1_FLUSH 0x30818
+#define SOURCE_PIF_FIFO2_FLUSH 0x3081c
+#define SOURCE_PIF_STATUS 0x30820
+#define SOURCE_PIF_INTERRUPT_SOURCE 0x30824
+#define SOURCE_PIF_INTERRUPT_MASK 0x30828
+#define SOURCE_PIF_PKT_ALLOC_REG 0x3082c
+#define SOURCE_PIF_PKT_ALLOC_WR_EN 0x30830
+#define SOURCE_PIF_SW_RESET 0x30834
+
+/* mailbox */
+#define MB_MODULE_ID_DP_TX 0x01
+#define MB_MODULE_ID_HDMI_TX 0x03
+#define MB_MODULE_ID_HDCP_TX 0x07
+#define MB_MODULE_ID_HDCP_RX 0x08
+#define MB_MODULE_ID_HDCP_GENERAL 0x09
+#define MB_MODULE_ID_GENERAL 0x0A
+
+/* General opcode */
+#define GENERAL_MAIN_CONTROL 0x01
+#define GENERAL_TEST_ECHO 0x02
+#define GENERAL_BUS_SETTINGS 0x03
+#define GENERAL_TEST_ACCESS 0x04
+#define GENERAL_WRITE_FIELD 0x06
+#define GENERAL_READ_REGISTER 0x07
+#define GENERAL_GET_HPD_STATE 0x11
+
+/* DPTX opcode */
+#define DPTX_SET_POWER_MNG 0x00
+#define DPTX_SET_HOST_CAPABILITIES 0x01
+#define DPTX_GET_EDID 0x02
+#define DPTX_READ_DPCD 0x03
+#define DPTX_WRITE_DPCD 0x04
+#define DPTX_ENABLE_EVENT 0x05
+#define DPTX_WRITE_REGISTER 0x06
+#define DPTX_READ_REGISTER 0x07
+#define DPTX_WRITE_FIELD 0x08
+#define DPTX_TRAINING_CONTROL 0x09
+#define DPTX_READ_EVENT 0x0a
+#define DPTX_READ_LINK_STAT 0x0b
+#define DPTX_SET_VIDEO 0x0c
+#define DPTX_SET_AUDIO 0x0d
+#define DPTX_GET_LAST_AUX_STAUS 0x0e
+#define DPTX_SET_LINK_BREAK_POINT 0x0f
+#define DPTX_FORCE_LANES 0x10
+#define DPTX_HPD_STATE 0x11
+
+/* HDMI TX opcode */
+#define HDMI_TX_READ 0x00
+#define HDMI_TX_WRITE 0x01
+#define HDMI_TX_UPDATE_READ 0x02
+#define HDMI_TX_EDID 0x03
+#define HDMI_TX_EVENTS 0x04
+#define HDMI_TX_HPD_STATUS 0x05
+
+#define MHDP_EVENT_ENABLE_HPD BIT(0)
+#define MHDP_EVENT_ENABLE_TRAINING BIT(1)
+
+#define LINK_TRAINING_NOT_ACTIVE 0
+#define LINK_TRAINING_RUN 1
+#define LINK_TRAINING_RESTART 2
+
+#define CONTROL_VIDEO_IDLE 0
+#define CONTROL_VIDEO_VALID 1
+
+#define INTERLACE_FMT_DET BIT(12)
+#define VIF_BYPASS_INTERLACE BIT(13)
+#define TU_CNT_RST_EN BIT(15)
+#define INTERLACE_DTCT_WIN 0x20
+
+#define DP_FRAMER_SP_INTERLACE_EN BIT(2)
+#define DP_FRAMER_SP_HSP BIT(1)
+#define DP_FRAMER_SP_VSP BIT(0)
+
+/* capability */
+#define AUX_HOST_INVERT 3
+#define FAST_LT_SUPPORT 1
+#define FAST_LT_NOT_SUPPORT 0
+#define LANE_MAPPING_NORMAL 0x1b
+#define LANE_MAPPING_FLIPPED 0xe4
+#define ENHANCED 1
+#define SCRAMBLER_EN BIT(4)
+
+#define FULL_LT_STARTED BIT(0)
+#define FASE_LT_STARTED BIT(1)
+#define CLK_RECOVERY_FINISHED BIT(2)
+#define EQ_PHASE_FINISHED BIT(3)
+#define FASE_LT_START_FINISHED BIT(4)
+#define CLK_RECOVERY_FAILED BIT(5)
+#define EQ_PHASE_FAILED BIT(6)
+#define FASE_LT_FAILED BIT(7)
+
+#define TU_SIZE 30
+#define CDNS_DP_MAX_LINK_RATE 540000
+
+#define F_HDMI_ENCODING(x) (((x) & ((1 << 2) - 1)) << 16)
+#define F_VIF_DATA_WIDTH(x) (((x) & ((1 << 2) - 1)) << 2)
+#define F_HDMI_MODE(x) (((x) & ((1 << 2) - 1)) << 0)
+#define F_GCP_EN(x) (((x) & ((1 << 1) - 1)) << 12)
+#define F_DATA_EN(x) (((x) & ((1 << 1) - 1)) << 15)
+#define F_HDMI2_PREAMBLE_EN(x) (((x) & ((1 << 1) - 1)) << 18)
+#define F_PIC_3D(x) (((x) & ((1 << 4) - 1)) << 7)
+#define F_BCH_EN(x) (((x) & ((1 << 1) - 1)) << 11)
+#define F_SOURCE_PHY_MHDP_SEL(x) (((x) & ((1 << 2) - 1)) << 3)
+#define F_HPD_VALID_WIDTH(x) (((x) & ((1 << 12) - 1)) << 0)
+#define F_HPD_GLITCH_WIDTH(x) (((x) & ((1 << 8) - 1)) << 12)
+#define F_HDMI2_CTRL_IL_MODE(x) (((x) & ((1 << 1) - 1)) << 19)
+#define F_SOURCE_PHY_LANE0_SWAP(x) (((x) & ((1 << 2) - 1)) << 0)
+#define F_SOURCE_PHY_LANE1_SWAP(x) (((x) & ((1 << 2) - 1)) << 2)
+#define F_SOURCE_PHY_LANE2_SWAP(x) (((x) & ((1 << 2) - 1)) << 4)
+#define F_SOURCE_PHY_LANE3_SWAP(x) (((x) & ((1 << 2) - 1)) << 6)
+#define F_SOURCE_PHY_COMB_BYPASS(x) (((x) & ((1 << 1) - 1)) << 21)
+#define F_SOURCE_PHY_20_10(x) (((x) & ((1 << 1) - 1)) << 22)
+#define F_PKT_ALLOC_ADDRESS(x) (((x) & ((1 << 4) - 1)) << 0)
+#define F_ACTIVE_IDLE_TYPE(x) (((x) & ((1 << 1) - 1)) << 17)
+#define F_FIFO1_FLUSH(x) (((x) & ((1 << 1) - 1)) << 0)
+#define F_PKT_ALLOC_WR_EN(x) (((x) & ((1 << 1) - 1)) << 0)
+#define F_DATA_WR(x) (x)
+#define F_WR_ADDR(x) (((x) & ((1 << 4) - 1)) << 0)
+#define F_HOST_WR(x) (((x) & ((1 << 1) - 1)) << 0)
+#define F_TYPE_VALID(x) (((x) & ((1 << 1) - 1)) << 16)
+#define F_PACKET_TYPE(x) (((x) & ((1 << 8) - 1)) << 8)
+
+/* Reference cycles when using lane clock as reference */
+#define LANE_REF_CYC 0x8000
+
+/* HPD Debounce */
+#define HOTPLUG_DEBOUNCE_MS 200
+
+/* HPD IRQ Index */
+#define IRQ_IN 0
+#define IRQ_OUT 1
+#define IRQ_NUM 2
+
+/* FW check alive timeout */
+#define CDNS_KEEP_ALIVE_TIMEOUT 2000
+#define CDNS_KEEP_ALIVE_MASK GENMASK(7, 0)
+
+enum voltage_swing_level {
+ VOLTAGE_LEVEL_0,
+ VOLTAGE_LEVEL_1,
+ VOLTAGE_LEVEL_2,
+ VOLTAGE_LEVEL_3,
+};
+
+enum pre_emphasis_level {
+ PRE_EMPHASIS_LEVEL_0,
+ PRE_EMPHASIS_LEVEL_1,
+ PRE_EMPHASIS_LEVEL_2,
+ PRE_EMPHASIS_LEVEL_3,
+};
+
+enum pattern_set {
+ PTS1 = BIT(0),
+ PTS2 = BIT(1),
+ PTS3 = BIT(2),
+ PTS4 = BIT(3),
+ DP_NONE = BIT(4)
+};
+
+enum vic_color_depth {
+ BCS_6 = 0x1,
+ BCS_8 = 0x2,
+ BCS_10 = 0x4,
+ BCS_12 = 0x8,
+ BCS_16 = 0x10,
+};
+
+enum vic_bt_type {
+ BT_601 = 0x0,
+ BT_709 = 0x1,
+};
+
+enum {
+ MODE_DVI,
+ MODE_HDMI_1_4,
+ MODE_HDMI_2_0,
+};
+
+struct video_info {
+ int bpc;
+ int color_fmt;
+};
+
+struct cdns_mhdp_device {
+ struct device *dev;
+ void __iomem *regs;
+ struct drm_connector connector;
+ struct drm_connector *curr_conn;
+ struct drm_bridge bridge;
+ struct clk *apb_clk;
+ struct phy *phy;
+
+ struct video_info video_info;
+ struct drm_display_mode mode;
+
+ int irq[IRQ_NUM];
+ struct delayed_work hotplug_work;
+ u32 lane_mapping;
+ /* protect mailbox communications with the firmware */
+ struct mutex mbox_mutex;
+
+ const struct cdns_plat_data *plat_data;
+
+ union {
+ struct _dp_data {
+ u32 rate;
+ u8 num_lanes;
+ struct drm_dp_aux aux;
+ u8 dpcd[DP_RECEIVER_CAP_SIZE];
+ } dp;
+ struct _hdmi_data {
+ u32 hdmi_type;
+ } hdmi;
+ };
+};
+
+struct cdns_plat_data {
+ int lane_mapping;
+};
+#endif
--
2.34.1
Add a new DRM HDMI bridge driver for Cadence MHDP8501
that used in Freescale i.MX8MQ SoC.
MHDP8501 could support HDMI or DisplayPort standards according
embedded Firmware running in the uCPU.
For iMX8MQ SoC, the HDMI FW was loaded and activated by SOC ROM code.
Bootload binary included HDMI FW was required for the driver.
Signed-off-by: Sandor Yu <[email protected]>
---
drivers/gpu/drm/bridge/cadence/Kconfig | 12 +
drivers/gpu/drm/bridge/cadence/Makefile | 1 +
.../drm/bridge/cadence/cdns-mhdp8501-hdmi.c | 1024 +++++++++++++++++
3 files changed, 1037 insertions(+)
create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
diff --git a/drivers/gpu/drm/bridge/cadence/Kconfig b/drivers/gpu/drm/bridge/cadence/Kconfig
index 5b7ec4e49aa1..bee05e834055 100644
--- a/drivers/gpu/drm/bridge/cadence/Kconfig
+++ b/drivers/gpu/drm/bridge/cadence/Kconfig
@@ -59,3 +59,15 @@ config DRM_CDNS_MHDP8501_DP
Support Cadence MHDP8501 DisplayPort driver.
Cadence MHDP8501 Controller support one or more protocols,
DisplayPort firmware is required for this driver.
+
+config DRM_CDNS_MHDP8501_HDMI
+ tristate "Cadence MHDP8501 HDMI DRM driver"
+ select DRM_KMS_HELPER
+ select DRM_PANEL_BRIDGE
+ select DRM_DISPLAY_HELPER
+ select DRM_CDNS_AUDIO
+ depends on OF
+ help
+ Support Cadence MHDP8501 HDMI driver.
+ Cadence MHDP8501 Controller support one or more protocols,
+ HDMI firmware is required for this driver.
diff --git a/drivers/gpu/drm/bridge/cadence/Makefile b/drivers/gpu/drm/bridge/cadence/Makefile
index 5842e4540c62..8a129c14ac14 100644
--- a/drivers/gpu/drm/bridge/cadence/Makefile
+++ b/drivers/gpu/drm/bridge/cadence/Makefile
@@ -7,3 +7,4 @@ cdns-mhdp8546-y := cdns-mhdp8546-core.o cdns-mhdp8546-hdcp.o
cdns-mhdp8546-$(CONFIG_DRM_CDNS_MHDP8546_J721E) += cdns-mhdp8546-j721e.o
obj-$(CONFIG_DRM_CDNS_MHDP8501_DP) += cdns-mhdp8501-dp.o
+obj-$(CONFIG_DRM_CDNS_MHDP8501_HDMI) += cdns-mhdp8501-hdmi.o
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
new file mode 100644
index 000000000000..43673f1b50f6
--- /dev/null
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
@@ -0,0 +1,1024 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Cadence High-Definition Multimedia Interface (HDMI) driver
+ *
+ * Copyright (C) 2019-2022 NXP Semiconductor, Inc.
+ *
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/hdmi.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mutex.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/phy/phy-hdmi.h>
+
+#include <drm/bridge/cdns-mhdp-mailbox.h>
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_scdc_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_encoder_slave.h>
+#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_print.h>
+#include <drm/drm_vblank.h>
+
+#include "cdns-mhdp8501.h"
+
+/**
+ * cdns_hdmi_infoframe_set() - fill the HDMI AVI infoframe
+ * @mhdp: phandle to mhdp device.
+ * @entry_id: The packet memory address in which the data is written.
+ * @packet_len: 32, only 32 bytes now.
+ * @packet: point to InfoFrame Packet.
+ * packet[0] = 0
+ * packet[1-3] = HB[0-2] InfoFrame Packet Header
+ * packet[4-31 = PB[0-27] InfoFrame Packet Contents
+ * @packet_type: Packet Type of InfoFrame in HDMI Specification.
+ *
+ */
+static void cdns_hdmi_infoframe_set(struct cdns_mhdp_device *mhdp,
+ u8 entry_id, u8 packet_len, u8 *packet, u8 packet_type)
+{
+ u32 packet32, len32;
+ u32 val, i;
+
+ /* only support 32 bytes now */
+ if (packet_len != 32)
+ return;
+
+ /* invalidate entry */
+ val = F_ACTIVE_IDLE_TYPE(1) | F_PKT_ALLOC_ADDRESS(entry_id);
+ writel(val, mhdp->regs + SOURCE_PIF_PKT_ALLOC_REG);
+ writel(F_PKT_ALLOC_WR_EN(1), mhdp->regs + SOURCE_PIF_PKT_ALLOC_WR_EN);
+
+ /* flush fifo 1 */
+ writel(F_FIFO1_FLUSH(1), mhdp->regs + SOURCE_PIF_FIFO1_FLUSH);
+
+ /* write packet into memory */
+ len32 = packet_len / 4;
+ for (i = 0; i < len32; i++) {
+ packet32 = get_unaligned_le32(packet + 4 * i);
+ writel(F_DATA_WR(packet32), mhdp->regs + SOURCE_PIF_DATA_WR);
+ }
+
+ /* write entry id */
+ writel(F_WR_ADDR(entry_id), mhdp->regs + SOURCE_PIF_WR_ADDR);
+
+ /* write request */
+ writel(F_HOST_WR(1), mhdp->regs + SOURCE_PIF_WR_REQ);
+
+ /* update entry */
+ val = F_ACTIVE_IDLE_TYPE(1) | F_TYPE_VALID(1) |
+ F_PACKET_TYPE(packet_type) | F_PKT_ALLOC_ADDRESS(entry_id);
+ writel(val, mhdp->regs + SOURCE_PIF_PKT_ALLOC_REG);
+
+ writel(F_PKT_ALLOC_WR_EN(1), mhdp->regs + SOURCE_PIF_PKT_ALLOC_WR_EN);
+}
+
+static int cdns_hdmi_get_edid_block(void *data, u8 *edid,
+ u32 block, size_t length)
+{
+ struct cdns_mhdp_device *mhdp = data;
+ u8 msg[2], reg[5], i;
+ int ret;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ for (i = 0; i < 4; i++) {
+ msg[0] = block / 2;
+ msg[1] = block % 2;
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_HDMI_TX, HDMI_TX_EDID,
+ sizeof(msg), msg);
+ if (ret)
+ continue;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_HDMI_TX,
+ HDMI_TX_EDID, sizeof(reg) + length);
+ if (ret)
+ continue;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, reg, sizeof(reg));
+ if (ret)
+ continue;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, edid, length);
+ if (ret)
+ continue;
+
+ if ((reg[3] << 8 | reg[4]) == length)
+ break;
+ }
+
+ mutex_unlock(&mhdp->mbox_mutex);
+
+ if (ret)
+ DRM_ERROR("get block[%d] edid failed: %d\n", block, ret);
+ return ret;
+}
+
+static int cdns_hdmi_scdc_write(struct cdns_mhdp_device *mhdp, u8 addr, u8 value)
+{
+ u8 msg[5], reg[5];
+ int ret;
+
+ msg[0] = 0x54;
+ msg[1] = addr;
+ msg[2] = 0;
+ msg[3] = 1;
+ msg[4] = value;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_HDMI_TX, HDMI_TX_WRITE,
+ sizeof(msg), msg);
+ if (ret)
+ goto err_scdc_write;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_HDMI_TX,
+ HDMI_TX_WRITE, sizeof(reg));
+ if (ret)
+ goto err_scdc_write;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, reg, sizeof(reg));
+ if (ret)
+ goto err_scdc_write;
+
+ if (reg[0] != 0)
+ ret = -EINVAL;
+
+err_scdc_write:
+
+ mutex_unlock(&mhdp->mbox_mutex);
+
+ if (ret)
+ DRM_ERROR("scdc write failed: %d\n", ret);
+ return ret;
+}
+
+static int cdns_hdmi_ctrl_init(struct cdns_mhdp_device *mhdp, int protocol)
+{
+ u32 reg0, reg1, val;
+ int ret;
+
+ /* Set PHY to HDMI data */
+ ret = cdns_mhdp_reg_write(mhdp, PHY_DATA_SEL, F_SOURCE_PHY_MHDP_SEL(1));
+ if (ret < 0)
+ return ret;
+
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_HPD,
+ F_HPD_VALID_WIDTH(4) | F_HPD_GLITCH_WIDTH(0));
+ if (ret < 0)
+ return ret;
+
+ /* open CARS */
+ ret = cdns_mhdp_reg_write(mhdp, SOURCE_PHY_CAR, 0xF);
+ if (ret < 0)
+ return ret;
+ ret = cdns_mhdp_reg_write(mhdp, SOURCE_HDTX_CAR, 0xFF);
+ if (ret < 0)
+ return ret;
+ ret = cdns_mhdp_reg_write(mhdp, SOURCE_PKT_CAR, 0xF);
+ if (ret < 0)
+ return ret;
+ ret = cdns_mhdp_reg_write(mhdp, SOURCE_AIF_CAR, 0xF);
+ if (ret < 0)
+ return ret;
+ ret = cdns_mhdp_reg_write(mhdp, SOURCE_CIPHER_CAR, 0xF);
+ if (ret < 0)
+ return ret;
+ ret = cdns_mhdp_reg_write(mhdp, SOURCE_CRYPTO_CAR, 0xF);
+ if (ret < 0)
+ return ret;
+ ret = cdns_mhdp_reg_write(mhdp, SOURCE_CEC_CAR, 3);
+ if (ret < 0)
+ return ret;
+
+ reg0 = reg1 = 0x7c1f;
+ if (protocol == MODE_HDMI_2_0) {
+ reg0 = 0;
+ reg1 = 0xFFFFF;
+ }
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_CLOCK_REG_0, reg0);
+ if (ret < 0)
+ return ret;
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_CLOCK_REG_1, reg1);
+ if (ret < 0)
+ return ret;
+
+ /* set hdmi mode and preemble mode data enable */
+ val = F_HDMI_MODE(protocol) | F_HDMI2_PREAMBLE_EN(1) | F_DATA_EN(1) |
+ F_HDMI2_CTRL_IL_MODE(1) | F_BCH_EN(1) | F_PIC_3D(0XF);
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_CONTROLLER, val);
+
+ return ret;
+}
+
+static int cdns_hdmi_mode_config(struct cdns_mhdp_device *mhdp,
+ struct drm_display_mode *mode,
+ struct video_info *video_info)
+{
+ int ret;
+ u32 val;
+ u32 vsync_lines = mode->vsync_end - mode->vsync_start;
+ u32 eof_lines = mode->vsync_start - mode->vdisplay;
+ u32 sof_lines = mode->vtotal - mode->vsync_end;
+ u32 hblank = mode->htotal - mode->hdisplay;
+ u32 hactive = mode->hdisplay;
+ u32 vblank = mode->vtotal - mode->vdisplay;
+ u32 vactive = mode->vdisplay;
+ u32 hfront = mode->hsync_start - mode->hdisplay;
+ u32 hback = mode->htotal - mode->hsync_end;
+ u32 vfront = eof_lines;
+ u32 hsync = hblank - hfront - hback;
+ u32 vsync = vsync_lines;
+ u32 vback = sof_lines;
+ u32 v_h_polarity = ((mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1) +
+ ((mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : 2);
+
+ ret = cdns_mhdp_reg_write(mhdp, SCHEDULER_H_SIZE, (hactive << 16) + hblank);
+ if (ret < 0)
+ return ret;
+
+ ret = cdns_mhdp_reg_write(mhdp, SCHEDULER_V_SIZE, (vactive << 16) + vblank);
+ if (ret < 0)
+ return ret;
+
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_SIGNAL_FRONT_WIDTH, (vfront << 16) + hfront);
+ if (ret < 0)
+ return ret;
+
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_SIGNAL_SYNC_WIDTH, (vsync << 16) + hsync);
+ if (ret < 0)
+ return ret;
+
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_SIGNAL_BACK_WIDTH, (vback << 16) + hback);
+ if (ret < 0)
+ return ret;
+
+ ret = cdns_mhdp_reg_write(mhdp, HSYNC2VSYNC_POL_CTRL, v_h_polarity);
+ if (ret < 0)
+ return ret;
+
+ /* Reset Data Enable */
+ cdns_mhdp_reg_read(mhdp, HDTX_CONTROLLER, &val);
+ val &= ~F_DATA_EN(1);
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_CONTROLLER, val);
+ if (ret < 0)
+ return ret;
+
+ /* Set bpc */
+ val &= ~F_VIF_DATA_WIDTH(3);
+ switch (video_info->bpc) {
+ case 10:
+ val |= F_VIF_DATA_WIDTH(1);
+ break;
+ case 12:
+ val |= F_VIF_DATA_WIDTH(2);
+ break;
+ case 16:
+ val |= F_VIF_DATA_WIDTH(3);
+ break;
+ case 8:
+ default:
+ val |= F_VIF_DATA_WIDTH(0);
+ break;
+ }
+
+ /* select color encoding */
+ val &= ~F_HDMI_ENCODING(3);
+ switch (video_info->color_fmt) {
+ case DRM_COLOR_FORMAT_YCBCR444:
+ val |= F_HDMI_ENCODING(2);
+ break;
+ case DRM_COLOR_FORMAT_YCBCR422:
+ val |= F_HDMI_ENCODING(1);
+ break;
+ case DRM_COLOR_FORMAT_YCBCR420:
+ val |= F_HDMI_ENCODING(3);
+ break;
+ case DRM_COLOR_FORMAT_RGB444:
+ default:
+ val |= F_HDMI_ENCODING(0);
+ break;
+ }
+
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_CONTROLLER, val);
+ if (ret < 0)
+ return ret;
+
+ /* set data enable */
+ val |= F_DATA_EN(1);
+ ret = cdns_mhdp_reg_write(mhdp, HDTX_CONTROLLER, val);
+
+ return ret;
+}
+
+static int cdns_hdmi_disable_gcp(struct cdns_mhdp_device *mhdp)
+{
+ u32 val;
+
+ cdns_mhdp_reg_read(mhdp, HDTX_CONTROLLER, &val);
+ val &= ~F_GCP_EN(1);
+
+ return cdns_mhdp_reg_write(mhdp, HDTX_CONTROLLER, val);
+}
+
+static int cdns_hdmi_enable_gcp(struct cdns_mhdp_device *mhdp)
+{
+ u32 val;
+
+ cdns_mhdp_reg_read(mhdp, HDTX_CONTROLLER, &val);
+ val |= F_GCP_EN(1);
+
+ return cdns_mhdp_reg_write(mhdp, HDTX_CONTROLLER, val);
+}
+
+static void cdns_hdmi_sink_config(struct cdns_mhdp_device *mhdp)
+{
+ struct drm_scdc *scdc = &mhdp->curr_conn->display_info.hdmi.scdc;
+ u32 char_rate = mhdp->mode.clock * mhdp->video_info.bpc / 8;
+ u8 buff = 0;
+
+ /* Default work in HDMI1.4 */
+ mhdp->hdmi.hdmi_type = MODE_HDMI_1_4;
+
+ /* check sink support SCDC or not */
+ if (scdc->supported != true) {
+ DRM_INFO("Sink Not Support SCDC\n");
+ return;
+ }
+
+ if (char_rate > 340000) {
+ /*
+ * TMDS Character Rate above 340MHz should working in HDMI2.0
+ * Enable scrambling and TMDS_Bit_Clock_Ratio
+ */
+ buff = SCDC_TMDS_BIT_CLOCK_RATIO_BY_40 | SCDC_SCRAMBLING_ENABLE;
+ mhdp->hdmi.hdmi_type = MODE_HDMI_2_0;
+ } else if (scdc->scrambling.low_rates) {
+ /*
+ * Enable scrambling and HDMI2.0 when scrambling capability of sink
+ * be indicated in the HF-VSDB LTE_340Mcsc_scramble bit
+ */
+ buff = SCDC_SCRAMBLING_ENABLE;
+ mhdp->hdmi.hdmi_type = MODE_HDMI_2_0;
+ }
+
+ /* TMDS config */
+ cdns_hdmi_scdc_write(mhdp, SCDC_TMDS_CONFIG, buff);
+}
+
+static void cdns_hdmi_lanes_config(struct cdns_mhdp_device *mhdp)
+{
+ u32 lane_mapping = mhdp->plat_data->lane_mapping;
+ /* Line swapping */
+ cdns_mhdp_reg_write(mhdp, LANES_CONFIG, 0x00400000 | lane_mapping);
+}
+
+static int cdns_hdmi_read_hpd(struct cdns_mhdp_device *mhdp)
+{
+ u8 status;
+ int ret;
+
+ mutex_lock(&mhdp->mbox_mutex);
+
+ ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_HDMI_TX, HDMI_TX_HPD_STATUS,
+ 0, NULL);
+ if (ret)
+ goto err_get_hpd;
+
+ ret = cdns_mhdp_mailbox_recv_header(mhdp, MB_MODULE_ID_HDMI_TX,
+ HDMI_TX_HPD_STATUS, sizeof(status));
+ if (ret)
+ goto err_get_hpd;
+
+ ret = cdns_mhdp_mailbox_recv_data(mhdp, &status, sizeof(status));
+ if (ret)
+ goto err_get_hpd;
+
+ mutex_unlock(&mhdp->mbox_mutex);
+ return status;
+
+err_get_hpd:
+ mutex_unlock(&mhdp->mbox_mutex);
+ DRM_ERROR("read hpd failed: %d\n", ret);
+ return ret;
+}
+
+static int cdns_hdmi_avi_info_set(struct cdns_mhdp_device *mhdp,
+ struct drm_display_mode *mode)
+{
+ struct hdmi_avi_infoframe frame;
+ int format = mhdp->video_info.color_fmt;
+ struct drm_connector_state *conn_state = mhdp->curr_conn->state;
+ struct drm_display_mode *adj_mode;
+ enum hdmi_quantization_range qr;
+ u8 buf[32];
+ int ret;
+
+ /* Initialise info frame from DRM mode */
+ drm_hdmi_avi_infoframe_from_display_mode(&frame,
+ mhdp->curr_conn, mode);
+
+ switch (format) {
+ case DRM_COLOR_FORMAT_YCBCR444:
+ frame.colorspace = HDMI_COLORSPACE_YUV444;
+ break;
+ case DRM_COLOR_FORMAT_YCBCR422:
+ frame.colorspace = HDMI_COLORSPACE_YUV422;
+ break;
+ case DRM_COLOR_FORMAT_YCBCR420:
+ frame.colorspace = HDMI_COLORSPACE_YUV420;
+ break;
+ default:
+ frame.colorspace = HDMI_COLORSPACE_RGB;
+ break;
+ }
+
+ drm_hdmi_avi_infoframe_colorimetry(&frame, conn_state);
+
+ adj_mode = &mhdp->bridge.encoder->crtc->state->adjusted_mode;
+
+ qr = drm_default_rgb_quant_range(adj_mode);
+
+ drm_hdmi_avi_infoframe_quant_range(&frame, mhdp->curr_conn,
+ adj_mode, qr);
+
+ ret = hdmi_avi_infoframe_check(&frame);
+ if (WARN_ON(ret))
+ return -EINVAL;
+
+ ret = hdmi_avi_infoframe_pack(&frame, buf + 1, sizeof(buf) - 1);
+ if (ret < 0) {
+ DRM_ERROR("failed to pack AVI infoframe: %d\n", ret);
+ return -1;
+ }
+
+ buf[0] = 0;
+ cdns_hdmi_infoframe_set(mhdp, 0, sizeof(buf), buf, HDMI_INFOFRAME_TYPE_AVI);
+
+ return 0;
+}
+
+static void cdns_hdmi_vendor_info_set(struct cdns_mhdp_device *mhdp,
+ struct drm_display_mode *mode)
+{
+ struct hdmi_vendor_infoframe frame;
+ u8 buf[32];
+ int ret;
+
+ /* Initialise vendor frame from DRM mode */
+ ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame, mhdp->curr_conn, mode);
+ if (ret < 0) {
+ DRM_INFO("No vendor infoframe\n");
+ return;
+ }
+
+ ret = hdmi_vendor_infoframe_pack(&frame, buf + 1, sizeof(buf) - 1);
+ if (ret < 0) {
+ DRM_WARN("Unable to pack vendor infoframe: %d\n", ret);
+ return;
+ }
+
+ buf[0] = 0;
+ cdns_hdmi_infoframe_set(mhdp, 3, sizeof(buf), buf, HDMI_INFOFRAME_TYPE_VENDOR);
+}
+
+static void cdns_hdmi_drm_info_set(struct cdns_mhdp_device *mhdp)
+{
+ struct drm_connector_state *conn_state;
+ struct hdmi_drm_infoframe frame;
+ u8 buf[32];
+ int ret;
+
+ conn_state = mhdp->curr_conn->state;
+
+ if (!conn_state->hdr_output_metadata)
+ return;
+
+ ret = drm_hdmi_infoframe_set_hdr_metadata(&frame, conn_state);
+ if (ret < 0) {
+ DRM_DEBUG_KMS("couldn't set HDR metadata in infoframe\n");
+ return;
+ }
+
+ ret = hdmi_drm_infoframe_pack(&frame, buf + 1, sizeof(buf) - 1);
+ if (ret < 0) {
+ DRM_DEBUG_KMS("couldn't pack HDR infoframe\n");
+ return;
+ }
+
+ buf[0] = 0;
+ cdns_hdmi_infoframe_set(mhdp, 3, sizeof(buf), buf, HDMI_INFOFRAME_TYPE_DRM);
+}
+
+static int cdns_hdmi_phy_colorspace(int color_fmt)
+{
+ int color_space;
+
+ switch (color_fmt) {
+ case DRM_COLOR_FORMAT_YCBCR444:
+ color_space = HDMI_PHY_COLORSPACE_YUV444;
+ break;
+ case DRM_COLOR_FORMAT_YCBCR422:
+ color_space = HDMI_PHY_COLORSPACE_YUV422;
+ break;
+ case DRM_COLOR_FORMAT_YCBCR420:
+ color_space = HDMI_PHY_COLORSPACE_YUV420;
+ break;
+ case DRM_COLOR_FORMAT_RGB444:
+ default:
+ color_space = HDMI_PHY_COLORSPACE_RGB;
+ break;
+ }
+
+ return color_space;
+}
+
+static void cdns_hdmi_mode_set(struct cdns_mhdp_device *mhdp)
+{
+ struct drm_display_mode *mode = &mhdp->mode;
+ union phy_configure_opts phy_cfg;
+ int ret;
+
+ /* video mode check */
+ if (mode->clock == 0 || mode->hdisplay == 0 || mode->vdisplay == 0)
+ return;
+
+ cdns_hdmi_lanes_config(mhdp);
+
+ phy_cfg.hdmi.pixel_clk_rate = mode->clock;
+ phy_cfg.hdmi.bpc = mhdp->video_info.bpc;
+ phy_cfg.hdmi.color_space = cdns_hdmi_phy_colorspace(mhdp->video_info.color_fmt);
+
+ /* Mailbox protect for HDMI PHY access */
+ mutex_lock(&mhdp->mbox_mutex);
+ ret = phy_configure(mhdp->phy, &phy_cfg);
+ mutex_unlock(&mhdp->mbox_mutex);
+ if (ret) {
+ dev_err(mhdp->dev, "%s: phy_configure() failed: %d\n",
+ __func__, ret);
+ return;
+ }
+
+ cdns_hdmi_sink_config(mhdp);
+
+ ret = cdns_hdmi_ctrl_init(mhdp, mhdp->hdmi.hdmi_type);
+ if (ret < 0) {
+ DRM_ERROR("%s, ret = %d\n", __func__, ret);
+ return;
+ }
+
+ /* Config GCP */
+ if (mhdp->video_info.bpc == 8)
+ cdns_hdmi_disable_gcp(mhdp);
+ else
+ cdns_hdmi_enable_gcp(mhdp);
+
+ ret = cdns_hdmi_avi_info_set(mhdp, mode);
+ if (ret < 0) {
+ DRM_ERROR("%s ret = %d\n", __func__, ret);
+ return;
+ }
+
+ /* vendor info frame is enabled only for HDMI1.4 4K mode */
+ cdns_hdmi_vendor_info_set(mhdp, mode);
+
+ cdns_hdmi_drm_info_set(mhdp);
+
+ ret = cdns_hdmi_mode_config(mhdp, mode, &mhdp->video_info);
+ if (ret < 0) {
+ DRM_ERROR("CDN_API_HDMITX_SetVic_blocking ret = %d\n", ret);
+ return;
+ }
+}
+
+static int cdns_hdmi_connector_get_modes(struct drm_connector *connector)
+{
+ struct cdns_mhdp_device *mhdp =
+ container_of(connector, struct cdns_mhdp_device, connector);
+ int num_modes = 0;
+ struct edid *edid;
+
+ edid = drm_do_get_edid(connector,
+ cdns_hdmi_get_edid_block, mhdp);
+ if (edid) {
+ dev_info(mhdp->dev, "%x,%x,%x,%x,%x,%x,%x,%x\n",
+ edid->header[0], edid->header[1],
+ edid->header[2], edid->header[3],
+ edid->header[4], edid->header[5],
+ edid->header[6], edid->header[7]);
+ drm_connector_update_edid_property(connector, edid);
+ num_modes = drm_add_edid_modes(connector, edid);
+ kfree(edid);
+ }
+
+ if (num_modes == 0)
+ DRM_ERROR("Invalid edid\n");
+ return num_modes;
+}
+
+static bool blob_equal(const struct drm_property_blob *a,
+ const struct drm_property_blob *b)
+{
+ if (a && b)
+ return a->length == b->length &&
+ !memcmp(a->data, b->data, a->length);
+
+ return !a == !b;
+}
+
+static int cdns_hdmi_connector_atomic_check(struct drm_connector *connector,
+ struct drm_atomic_state *state)
+{
+ struct drm_connector_state *new_con_state =
+ drm_atomic_get_new_connector_state(state, connector);
+ struct drm_connector_state *old_con_state =
+ drm_atomic_get_old_connector_state(state, connector);
+ struct drm_crtc *crtc = new_con_state->crtc;
+ struct drm_crtc_state *new_crtc_state;
+
+ if (!blob_equal(new_con_state->hdr_output_metadata,
+ old_con_state->hdr_output_metadata) ||
+ new_con_state->colorspace != old_con_state->colorspace) {
+ new_crtc_state = drm_atomic_get_crtc_state(state, crtc);
+ if (IS_ERR(new_crtc_state))
+ return PTR_ERR(new_crtc_state);
+
+ new_crtc_state->mode_changed =
+ !new_con_state->hdr_output_metadata ||
+ !old_con_state->hdr_output_metadata ||
+ new_con_state->colorspace != old_con_state->colorspace;
+ }
+
+ return 0;
+}
+
+static const struct drm_connector_funcs cdns_hdmi_connector_funcs = {
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = drm_connector_cleanup,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static const struct drm_connector_helper_funcs cdns_hdmi_connector_helper_funcs = {
+ .get_modes = cdns_hdmi_connector_get_modes,
+ .atomic_check = cdns_hdmi_connector_atomic_check,
+};
+
+static int cdns_hdmi_bridge_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+ struct drm_mode_config *config = &bridge->dev->mode_config;
+ struct drm_encoder *encoder = bridge->encoder;
+ struct drm_connector *connector = &mhdp->connector;
+
+ if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+ connector->interlace_allowed = 0;
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+
+ drm_connector_helper_add(connector, &cdns_hdmi_connector_helper_funcs);
+
+ drm_connector_init(bridge->dev, connector, &cdns_hdmi_connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA);
+
+ drm_object_attach_property(&connector->base,
+ config->hdr_output_metadata_property, 0);
+
+ if (!drm_mode_create_hdmi_colorspace_property(connector))
+ drm_object_attach_property(&connector->base,
+ connector->colorspace_property, 0);
+
+ drm_connector_attach_encoder(connector, encoder);
+ }
+
+ return 0;
+}
+
+static enum drm_mode_status
+cdns_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
+ const struct drm_display_info *info,
+ const struct drm_display_mode *mode)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+ enum drm_mode_status mode_status = MODE_OK;
+ union phy_configure_opts phy_cfg;
+ int ret;
+
+ /* We don't support double-clocked and Interlaced modes */
+ if (mode->flags & DRM_MODE_FLAG_DBLCLK ||
+ mode->flags & DRM_MODE_FLAG_INTERLACE)
+ return MODE_BAD;
+
+ /* MAX support pixel clock rate 594MHz */
+ if (mode->clock > 594000)
+ return MODE_CLOCK_HIGH;
+
+ /* 4096x2160 is not supported */
+ if (mode->hdisplay > 3840 || mode->vdisplay > 2160)
+ return MODE_BAD_HVALUE;
+
+ /* Check modes supported by PHY */
+ phy_cfg.hdmi.pixel_clk_rate = mode->clock;
+
+ /* Mailbox protect for HDMI PHY access */
+ mutex_lock(&mhdp->mbox_mutex);
+ ret = phy_validate(mhdp->phy, PHY_MODE_HDMI, 0, &phy_cfg);
+ mutex_unlock(&mhdp->mbox_mutex);
+ if (ret < 0)
+ return MODE_CLOCK_RANGE;
+
+ return mode_status;
+}
+
+bool cdns_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+ struct video_info *video = &mhdp->video_info;
+
+ /* The only currently supported format */
+ video->bpc = 8;
+ video->color_fmt = DRM_COLOR_FORMAT_RGB444;
+
+ return true;
+}
+
+static enum drm_connector_status
+cdns_hdmi_detect(struct cdns_mhdp_device *mhdp)
+{
+ u8 hpd = 0xf;
+
+ hpd = cdns_hdmi_read_hpd(mhdp);
+ if (hpd == 1)
+ return connector_status_connected;
+ else if (hpd == 0)
+ return connector_status_disconnected;
+
+ DRM_INFO("Unknown cable status, hdp=%u\n", hpd);
+ return connector_status_unknown;
+}
+
+static enum drm_connector_status
+cdns_hdmi_bridge_detect(struct drm_bridge *bridge)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+
+ return cdns_hdmi_detect(mhdp);
+}
+
+static struct edid *cdns_hdmi_bridge_get_edid(struct drm_bridge *bridge,
+ struct drm_connector *connector)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+
+ return drm_do_get_edid(connector, cdns_hdmi_get_edid_block, mhdp);
+}
+
+static void cdns_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_state)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+
+ mhdp->curr_conn = NULL;
+
+ /* Mailbox protect for HDMI PHY access */
+ mutex_lock(&mhdp->mbox_mutex);
+ phy_power_off(mhdp->phy);
+ mutex_unlock(&mhdp->mbox_mutex);
+}
+
+static void cdns_hdmi_bridge_atomic_enable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_state)
+{
+ struct cdns_mhdp_device *mhdp = bridge->driver_private;
+ struct drm_atomic_state *state = old_state->base.state;
+ struct drm_connector *connector;
+ struct drm_crtc_state *crtc_state;
+ struct drm_connector_state *conn_state;
+ const struct drm_display_mode *mode;
+
+ connector = drm_atomic_get_new_connector_for_encoder(state,
+ bridge->encoder);
+ if (WARN_ON(!connector))
+ return;
+
+ mhdp->curr_conn = connector;
+
+ conn_state = drm_atomic_get_new_connector_state(state, connector);
+ if (WARN_ON(!conn_state))
+ return;
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
+ if (WARN_ON(!crtc_state))
+ return;
+
+ mode = &crtc_state->adjusted_mode;
+ DRM_INFO("Mode: %dx%dp%d\n", mode->hdisplay, mode->vdisplay, mode->clock);
+ memcpy(&mhdp->mode, mode, sizeof(struct drm_display_mode));
+
+ cdns_hdmi_mode_set(mhdp);
+}
+
+static const struct drm_bridge_funcs cdns_hdmi_bridge_funcs = {
+ .attach = cdns_hdmi_bridge_attach,
+ .detect = cdns_hdmi_bridge_detect,
+ .get_edid = cdns_hdmi_bridge_get_edid,
+ .mode_valid = cdns_hdmi_bridge_mode_valid,
+ .mode_fixup = cdns_hdmi_bridge_mode_fixup,
+ .atomic_enable = cdns_hdmi_bridge_atomic_enable,
+ .atomic_disable = cdns_hdmi_bridge_atomic_disable,
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
+};
+
+static void hotplug_work_func(struct work_struct *work)
+{
+ struct cdns_mhdp_device *mhdp = container_of(work,
+ struct cdns_mhdp_device, hotplug_work.work);
+ enum drm_connector_status status = cdns_hdmi_detect(mhdp);
+
+ drm_bridge_hpd_notify(&mhdp->bridge, status);
+
+ if (status == connector_status_connected) {
+ DRM_INFO("HDMI Cable Plug In\n");
+ enable_irq(mhdp->irq[IRQ_OUT]);
+ } else if (status == connector_status_disconnected) {
+ /* Cable Disconnedted */
+ DRM_INFO("HDMI Cable Plug Out\n");
+ enable_irq(mhdp->irq[IRQ_IN]);
+ }
+}
+
+static irqreturn_t cdns_hdmi_irq_thread(int irq, void *data)
+{
+ struct cdns_mhdp_device *mhdp = data;
+
+ disable_irq_nosync(irq);
+
+ mod_delayed_work(system_wq, &mhdp->hotplug_work,
+ msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS));
+
+ return IRQ_HANDLED;
+}
+
+static int cdns_mhdp_imx_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct cdns_mhdp_device *mhdp;
+ struct resource *res;
+ u32 reg;
+ int ret;
+
+ mhdp = devm_kzalloc(dev, sizeof(*mhdp), GFP_KERNEL);
+ if (!mhdp)
+ return -ENOMEM;
+
+ mutex_init(&mhdp->mbox_mutex);
+ mhdp->dev = dev;
+
+ INIT_DELAYED_WORK(&mhdp->hotplug_work, hotplug_work_func);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+ mhdp->regs = devm_ioremap(dev, res->start, resource_size(res));
+ if (IS_ERR(mhdp->regs))
+ return PTR_ERR(mhdp->regs);
+
+ mhdp->phy = devm_of_phy_get_by_index(dev, pdev->dev.of_node, 0);
+ if (IS_ERR(mhdp->phy))
+ return dev_err_probe(dev, PTR_ERR(mhdp->phy), "no PHY configured\n");
+
+ mhdp->irq[IRQ_IN] = platform_get_irq_byname(pdev, "plug_in");
+ if (mhdp->irq[IRQ_IN] < 0)
+ return dev_err_probe(dev, mhdp->irq[IRQ_IN], "No plug_in irq number\n");
+
+ mhdp->irq[IRQ_OUT] = platform_get_irq_byname(pdev, "plug_out");
+ if (mhdp->irq[IRQ_OUT] < 0)
+ return dev_err_probe(dev, mhdp->irq[IRQ_OUT], "No plug_out irq number\n");
+
+ irq_set_status_flags(mhdp->irq[IRQ_IN], IRQ_NOAUTOEN);
+ ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_IN],
+ NULL, cdns_hdmi_irq_thread,
+ IRQF_ONESHOT, dev_name(dev),
+ mhdp);
+ if (ret < 0) {
+ dev_err(dev, "can't claim irq %d\n", mhdp->irq[IRQ_IN]);
+ return -EINVAL;
+ }
+
+ irq_set_status_flags(mhdp->irq[IRQ_OUT], IRQ_NOAUTOEN);
+ ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_OUT],
+ NULL, cdns_hdmi_irq_thread,
+ IRQF_ONESHOT, dev_name(dev),
+ mhdp);
+ if (ret < 0) {
+ dev_err(dev, "can't claim irq %d\n", mhdp->irq[IRQ_OUT]);
+ return -EINVAL;
+ }
+
+ mhdp->plat_data = of_device_get_match_data(dev);
+ dev_set_drvdata(dev, mhdp);
+
+ /* Enable APB clock */
+ mhdp->apb_clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(mhdp->apb_clk))
+ return dev_err_probe(dev, PTR_ERR(mhdp->apb_clk), "couldn't get apb clk\n");
+
+ clk_prepare_enable(mhdp->apb_clk);
+
+ /*
+ * Wait for the KEEP_ALIVE "message" on the first 8 bits.
+ * Updated each sched "tick" (~2ms)
+ */
+ ret = readl_poll_timeout(mhdp->regs + KEEP_ALIVE, reg,
+ reg & CDNS_KEEP_ALIVE_MASK, 500,
+ CDNS_KEEP_ALIVE_TIMEOUT);
+ if (ret) {
+ dev_err(dev,
+ "device didn't give any life sign: reg %d\n", reg);
+ goto clk_disable;
+ }
+
+ /* Mailbox protect for HDMI PHY access */
+ mutex_lock(&mhdp->mbox_mutex);
+ ret = phy_init(mhdp->phy);
+ mutex_unlock(&mhdp->mbox_mutex);
+ if (ret) {
+ dev_err(dev, "Failed to initialize PHY: %d\n", ret);
+ goto clk_disable;
+ }
+
+ /* Enable Hotplug Detect */
+ if (cdns_hdmi_read_hpd(mhdp))
+ enable_irq(mhdp->irq[IRQ_OUT]);
+ else
+ enable_irq(mhdp->irq[IRQ_IN]);
+
+ mhdp->bridge.driver_private = mhdp;
+ mhdp->bridge.funcs = &cdns_hdmi_bridge_funcs;
+ mhdp->bridge.of_node = dev->of_node;
+ mhdp->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
+ DRM_BRIDGE_OP_HPD;
+ mhdp->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
+ drm_bridge_add(&mhdp->bridge);
+
+ return 0;
+
+clk_disable:
+ clk_disable_unprepare(mhdp->apb_clk);
+
+ return -EINVAL;
+}
+
+static int cdns_mhdp_imx_remove(struct platform_device *pdev)
+{
+ struct cdns_mhdp_device *mhdp = platform_get_drvdata(pdev);
+ int ret = 0;
+
+ drm_bridge_remove(&mhdp->bridge);
+ clk_disable_unprepare(mhdp->apb_clk);
+
+ return ret;
+}
+
+static struct cdns_plat_data imx8mq_hdmi_drv_data = {
+ .lane_mapping = 0xe4,
+};
+
+static const struct of_device_id cdns_mhdp_imx_dt_ids[] = {
+ { .compatible = "cdns,mhdp8501-hdmi", },
+ { .compatible = "fsl,imx8mq-mhdp8501-hdmi",
+ .data = &imx8mq_hdmi_drv_data
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, cdns_mhdp_imx_dt_ids);
+
+static struct platform_driver cdns_mhdp_imx_platform_driver = {
+ .probe = cdns_mhdp_imx_probe,
+ .remove = cdns_mhdp_imx_remove,
+ .driver = {
+ .name = "cdns-mhdp8501-hdmi",
+ .of_match_table = cdns_mhdp_imx_dt_ids,
+ },
+};
+
+module_platform_driver(cdns_mhdp_imx_platform_driver);
+
+MODULE_AUTHOR("Sandor Yu <[email protected]>");
+MODULE_DESCRIPTION("Cadence MHDP8501 HDMI transmitter driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:cdns-mhdp8501-hdmi");
--
2.34.1
Hi Sandor,
On Thu, Jun 15, 2023 at 09:38:13AM +0800, Sandor Yu wrote:
> Add a new DRM DisplayPort bridge driver for Candence MHDP8501
> used in i.MX8MQ SOC. MHDP8501 could support HDMI or DisplayPort
> standards according embedded Firmware running in the uCPU.
>
> For iMX8MQ SOC, the DisplayPort FW was loaded and activated by SOC
> ROM code. Bootload binary included HDMI FW was required for the driver.
The bridge driver supports creating a connector, but is this really
necessary?
This part:
> +static const struct drm_connector_funcs cdns_dp_connector_funcs = {
> + .fill_modes = drm_helper_probe_single_connector_modes,
> + .destroy = drm_connector_cleanup,
> + .reset = drm_atomic_helper_connector_reset,
> + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> +};
> +
> +static const struct drm_connector_helper_funcs cdns_dp_connector_helper_funcs = {
> + .get_modes = cdns_dp_connector_get_modes,
> +};
> +
> +static int cdns_dp_bridge_attach(struct drm_bridge *bridge,
> + enum drm_bridge_attach_flags flags)
> +{
> + struct cdns_mhdp_device *mhdp = bridge->driver_private;
> + struct drm_encoder *encoder = bridge->encoder;
> + struct drm_connector *connector = &mhdp->connector;
> + int ret;
> +
> + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
> + connector->interlace_allowed = 0;
> +
> + connector->polled = DRM_CONNECTOR_POLL_HPD;
> +
> + drm_connector_helper_add(connector, &cdns_dp_connector_helper_funcs);
> +
> + drm_connector_init(bridge->dev, connector, &cdns_dp_connector_funcs,
> + DRM_MODE_CONNECTOR_DisplayPort);
> +
> + drm_connector_attach_encoder(connector, encoder);
> + }
Unless you have a display driver that do not create their own connector
then drop the above and error out if DRM_BRIDGE_ATTACH_NO_CONNECTOR is
not set.
It is encouraged that display drivers create their own connector.
This was the only detail I looked for in the driver, I hope some else
volunteer to review it.
Sam
Hi Sam,
Thanks your comments,
For i.MX8MQ, the display driver DCSS had create its own connector.
I will drop the code in the next version review patch set.
Thanks
Sandor
> -----Original Message-----
> From: Sam Ravnborg <[email protected]>
> Sent: 2023??6??16?? 0:33
> To: Sandor Yu <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; Oliver Brown
> <[email protected]>; dl-linux-imx <[email protected]>;
> [email protected]
> Subject: [EXT] Re: [PATCH v6 3/8] drm: bridge: Cadence: Add MHDP8501 DP
> driver
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> Hi Sandor,
>
> On Thu, Jun 15, 2023 at 09:38:13AM +0800, Sandor Yu wrote:
> > Add a new DRM DisplayPort bridge driver for Candence MHDP8501 used in
> > i.MX8MQ SOC. MHDP8501 could support HDMI or DisplayPort standards
> > according embedded Firmware running in the uCPU.
> >
> > For iMX8MQ SOC, the DisplayPort FW was loaded and activated by SOC
> ROM
> > code. Bootload binary included HDMI FW was required for the driver.
>
> The bridge driver supports creating a connector, but is this really necessary?
>
> This part:
> > +static const struct drm_connector_funcs cdns_dp_connector_funcs = {
> > + .fill_modes = drm_helper_probe_single_connector_modes,
> > + .destroy = drm_connector_cleanup,
> > + .reset = drm_atomic_helper_connector_reset,
> > + .atomic_duplicate_state =
> drm_atomic_helper_connector_duplicate_state,
> > + .atomic_destroy_state =
> > +drm_atomic_helper_connector_destroy_state,
> > +};
> > +
> > +static const struct drm_connector_helper_funcs
> cdns_dp_connector_helper_funcs = {
> > + .get_modes = cdns_dp_connector_get_modes, };
> > +
> > +static int cdns_dp_bridge_attach(struct drm_bridge *bridge,
> > + enum drm_bridge_attach_flags flags)
> {
> > + struct cdns_mhdp_device *mhdp = bridge->driver_private;
> > + struct drm_encoder *encoder = bridge->encoder;
> > + struct drm_connector *connector = &mhdp->connector;
> > + int ret;
> > +
> > + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
> > + connector->interlace_allowed = 0;
> > +
> > + connector->polled = DRM_CONNECTOR_POLL_HPD;
> > +
> > + drm_connector_helper_add(connector,
> > + &cdns_dp_connector_helper_funcs);
> > +
> > + drm_connector_init(bridge->dev, connector,
> &cdns_dp_connector_funcs,
> > +
> DRM_MODE_CONNECTOR_DisplayPort);
> > +
> > + drm_connector_attach_encoder(connector, encoder);
> > + }
>
> Unless you have a display driver that do not create their own connector then
> drop the above and error out if DRM_BRIDGE_ATTACH_NO_CONNECTOR is
> not set.
> It is encouraged that display drivers create their own connector.
>
> This was the only detail I looked for in the driver, I hope some else volunteer
> to review it.
>
> Sam
Hi Sandor,
Am Donnerstag, 15. Juni 2023, 03:38:12 CEST schrieb Sandor Yu:
> Add bindings for Cadence MHDP8501 DisplayPort and HDMI driver.
>
> Signed-off-by: Sandor Yu <[email protected]>
> ---
> .../display/bridge/cdns,mhdp8501.yaml | 105 ++++++++++++++++++
> 1 file changed, 105 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
>
> diff --git
> a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml new
> file mode 100644
> index 000000000000..a54756815e6f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> @@ -0,0 +1,105 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/cdns,mhdp8501.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cadence MHDP8501 Displayport bridge
> +
> +maintainers:
> + - Sandor Yu <[email protected]>
> +
> +description:
> + The Cadence MHDP8501 Displayport/HDMI TX interface.
> +
> +properties:
> + compatible:
> + enum:
> + - cdns,mhdp8501-dp
> + - cdns,mhdp8501-hdmi
> + - fsl,imx8mq-mhdp8501-dp
> + - fsl,imx8mq-mhdp8501-hdmi
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> + description: MHDP8501 DP/HDMI APB clock.
> +
> + phys:
> + maxItems: 1
> +
> + interrupts:
> + items:
> + - description: Hotplug cable plugin.
> + - description: Hotplug cable plugout.
> +
> + interrupt-names:
> + items:
> + - const: plug_in
> + - const: plug_out
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/ports
> +
> + properties:
> + port@0:
> + $ref: /schemas/graph.yaml#/properties/port
> + description:
> + Input port from display controller output.
> + port@1:
> + $ref: /schemas/graph.yaml#/properties/port
> + description:
> + Output port to DP/HDMI connector.
> +
> + required:
> + - port@0
> + - port@1
You mark these ports as required, but apparently the drivers do not use them,
AFAICT. E.g. missing port@1 is not resulting in an error, at lease for HDMI
one.
Best regards,
Alexander
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - interrupts
> + - interrupt-names
> + - phys
> + - ports
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/imx8mq-clock.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + mhdp_dp: dp-bridge@32c00000 {
> + compatible = "fsl,imx8mq-mhdp8501-dp";
> + reg = <0x32c00000 0x100000>;
> + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "plug_in", "plug_out";
> + clocks = <&clk IMX8MQ_CLK_DISP_APB_ROOT>;
> + phys = <&dp_phy>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> +
> + mhdp_in: endpoint {
> + remote-endpoint = <&dcss_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + mhdp_out: endpoint {
> + remote-endpoint = <&dp_con>;
> + };
> + };
> + };
> + };
--
TQ-Systems GmbH | M?hlstra?e 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht M?nchen, HRB 105018
Gesch?ftsf?hrer: Detlef Schneider, R?diger Stahl, Stefan Schneider
http://www.tq-group.com/
Hi Sandor,
Am Donnerstag, 15. Juni 2023, 03:38:16 CEST schrieb Sandor Yu:
> Add bindings for Freescale iMX8MQ DP and HDMI PHY.
>
> Signed-off-by: Sandor Yu <[email protected]>
> ---
> .../bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml | 53 +++++++++++++++++++
> 1 file changed, 53 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
>
> diff --git
> a/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
> b/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml new
> file mode 100644
> index 000000000000..917f113503dc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
> @@ -0,0 +1,53 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/fsl,imx8mq-dp-hdmi-phy.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cadence HDP-TX DP/HDMI PHY for Freescale i.MX8MQ SoC
> +
> +maintainers:
> + - Sandor Yu <[email protected]>
> +
> +properties:
> + compatible:
> + enum:
> + - fsl,imx8mq-dp-phy
> + - fsl,imx8mq-hdmi-phy
How is it intended to select DP or HDMI? E.g. provide a single default dp-phy
node in imx8mq.dtsi and change the compatible to HDMI on board-level?
Best regards,
Alexander
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: PHY reference clock.
> + - description: APB clock.
> +
> + clock-names:
> + items:
> + - const: ref
> + - const: apb
> +
> + "#phy-cells":
> + const: 0
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - "#phy-cells"
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/imx8mq-clock.h>
> + #include <dt-bindings/phy/phy.h>
> + dp_phy: phy@32c00000 {
> + compatible = "fsl,imx8mq-dp-phy";
> + reg = <0x32c00000 0x100000>;
> + #phy-cells = <0>;
> + clocks = <&hdmi_phy_27m>, <&clk IMX8MQ_CLK_DISP_APB_ROOT>;
> + clock-names = "ref", "apb";
> + };
--
TQ-Systems GmbH | M?hlstra?e 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht M?nchen, HRB 105018
Gesch?ftsf?hrer: Detlef Schneider, R?diger Stahl, Stefan Schneider
http://www.tq-group.com/
Hi Sandor,
thanks for sending a new version.
Am Donnerstag, 15. Juni 2023, 03:38:15 CEST schrieb Sandor Yu:
> Add a new DRM HDMI bridge driver for Cadence MHDP8501
> that used in Freescale i.MX8MQ SoC.
> MHDP8501 could support HDMI or DisplayPort standards according
> embedded Firmware running in the uCPU.
>
> For iMX8MQ SoC, the HDMI FW was loaded and activated by SOC ROM code.
> Bootload binary included HDMI FW was required for the driver.
>
> Signed-off-by: Sandor Yu <[email protected]>
> ---
> drivers/gpu/drm/bridge/cadence/Kconfig | 12 +
> drivers/gpu/drm/bridge/cadence/Makefile | 1 +
> .../drm/bridge/cadence/cdns-mhdp8501-hdmi.c | 1024 +++++++++++++++++
> 3 files changed, 1037 insertions(+)
> create mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
>
> diff --git a/drivers/gpu/drm/bridge/cadence/Kconfig
> b/drivers/gpu/drm/bridge/cadence/Kconfig index 5b7ec4e49aa1..bee05e834055
> 100644
> --- a/drivers/gpu/drm/bridge/cadence/Kconfig
> +++ b/drivers/gpu/drm/bridge/cadence/Kconfig
> @@ -59,3 +59,15 @@ config DRM_CDNS_MHDP8501_DP
> Support Cadence MHDP8501 DisplayPort driver.
> Cadence MHDP8501 Controller support one or more protocols,
> DisplayPort firmware is required for this driver.
> +
> +config DRM_CDNS_MHDP8501_HDMI
> + tristate "Cadence MHDP8501 HDMI DRM driver"
> + select DRM_KMS_HELPER
> + select DRM_PANEL_BRIDGE
> + select DRM_DISPLAY_HELPER
> + select DRM_CDNS_AUDIO
> + depends on OF
> + help
> + Support Cadence MHDP8501 HDMI driver.
> + Cadence MHDP8501 Controller support one or more protocols,
> + HDMI firmware is required for this driver.
> diff --git a/drivers/gpu/drm/bridge/cadence/Makefile
> b/drivers/gpu/drm/bridge/cadence/Makefile index 5842e4540c62..8a129c14ac14
> 100644
> --- a/drivers/gpu/drm/bridge/cadence/Makefile
> +++ b/drivers/gpu/drm/bridge/cadence/Makefile
> @@ -7,3 +7,4 @@ cdns-mhdp8546-y := cdns-mhdp8546-core.o cdns-mhdp8546-hdcp.o
> cdns-mhdp8546-$(CONFIG_DRM_CDNS_MHDP8546_J721E) += cdns-mhdp8546-j721e.o
>
> obj-$(CONFIG_DRM_CDNS_MHDP8501_DP) += cdns-mhdp8501-dp.o
> +obj-$(CONFIG_DRM_CDNS_MHDP8501_HDMI) += cdns-mhdp8501-hdmi.o
> diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
> b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c new file mode 100644
> index 000000000000..43673f1b50f6
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
[...]
> +static int cdns_hdmi_bridge_attach(struct drm_bridge *bridge,
> + enum drm_bridge_attach_flags flags)
> +{
> + struct cdns_mhdp_device *mhdp = bridge->driver_private;
> + struct drm_mode_config *config = &bridge->dev->mode_config;
> + struct drm_encoder *encoder = bridge->encoder;
> + struct drm_connector *connector = &mhdp->connector;
> +
> + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
> + connector->interlace_allowed = 0;
> + connector->polled = DRM_CONNECTOR_POLL_HPD;
> +
> + drm_connector_helper_add(connector,
&cdns_hdmi_connector_helper_funcs);
> +
> + drm_connector_init(bridge->dev, connector,
&cdns_hdmi_connector_funcs,
> + DRM_MODE_CONNECTOR_HDMIA);
> +
> + drm_object_attach_property(&connector->base,
> + config-
>hdr_output_metadata_property, 0);
> +
> + if (!drm_mode_create_hdmi_colorspace_property(connector))
This is missing a 2nd parameter.
> + drm_object_attach_property(&connector->base,
> + connector-
>colorspace_property, 0);
> +
> + drm_connector_attach_encoder(connector, encoder);
> + }
> +
> + return 0;
> +}
[...]
Best regards,
Alexander
--
TQ-Systems GmbH | M?hlstra?e 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht M?nchen, HRB 105018
Gesch?ftsf?hrer: Detlef Schneider, R?diger Stahl, Stefan Schneider
http://www.tq-group.com/
Hi Sandor,
thanks for sending a new version of this driver.
Am Donnerstag, 15. Juni 2023, 03:38:10 CEST schrieb Sandor Yu:
> The patch set initial support for Cadence MHDP8501(HDMI/DP) DRM bridge
> drivers and Cadence HDP-TX PHY(HDMI/DP) drivers for Freescale i.MX8MQ.
>
> The patch set compose of DRM bridge drivers and PHY drivers.
Using quick and dirty DT changes I was able to enable HDMI on imx8mq
(TQMa8MQ).
Best regards,
Alexander
> Both of them need the followed two patches to pass build.
> drm: bridge: Cadence: convert mailbox functions to macro functions
> phy: Add HDMI configuration options
>
> DRM bridges driver patches:
> dt-bindings: display: bridge: Add Cadence MHDP8501 HDMI and DP
> drm: bridge: Cadence: Add MHDP8501 DP driver
> drm: bridge: Cadence: Add MHDP8501 HDMI driver
>
> PHY driver patches:
> dt-bindings: phy: Add Freescale iMX8MQ DP and HDMI PHY
> phy: freescale: Add DisplayPort PHY driver for i.MX8MQ
> phy: freescale: Add HDMI PHY driver for i.MX8MQ
>
> v5->v6:
> HDMI/DP bridge driver
> - 8501 is the part number of Cadence MHDP on i.MX8MQ.
> Use MHDP8501 to name hdmi/dp drivers and files.
> - Add compatible "fsl,imx8mq-mhdp8501-dp" for i.MX8MQ DP driver
> - Add compatible "fsl,imx8mq-mhdp8501-hdmi" for i.MX8MQ HDMI driver
> - Combine HDMI and DP dt-bindings into one file cdns,mhdp8501.yaml
> - Fix HDMI scrambling is not enable issue when driver working in 4Kp60
> mode.
> - Add HDMI/DP PHY API mailbox protect.
>
> HDMI/DP PHY driver:
> - Rename DP and HDMI PHY files and move to folder phy/freescale/
> - Remove properties num_lanes and link_rate from DP PHY driver.
> - Combine HDMI and DP dt-bindings into one file fsl,imx8mq-dp-hdmi-phy.yaml
> - Update compatible string to "fsl,imx8mq-dp-phy".
> - Update compatible string to "fsl,imx8mq-hdmi-phy".
>
> v4->v5:
> - Drop "clk" suffix in clock name.
> - Add output port property in the example of hdmi/dp.
>
> v3->v4:
> dt-bindings:
> - Correct dt-bindings coding style and address review comments.
> - Add apb_clk description.
> - Add output port for HDMI/DP connector
> PHY:
> - Alphabetically sorted in Kconfig and Makefile for DP and HDMI PHY
> - Remove unused registers define from HDMI and DP PHY drivers.
> - More description in phy_hdmi.h.
> - Add apb_clk to HDMI and DP phy driver.
> HDMI/DP:
> - Use get_unaligned_le32() to replace hardcode type conversion
> in HDMI AVI infoframe data fill function.
> - Add mailbox mutex lock in HDMI/DP driver for phy functions
> to reslove race conditions between HDMI/DP and PHY drivers.
> - Add apb_clk to both HDMI and DP driver.
> - Rename some function names and add prefix with "cdns_hdmi/cdns_dp".
> - Remove bpc 12 and 16 optional that not supported.
>
> v2->v3:
> Address comments for dt-bindings files.
> - Correct dts-bindings file names
> Rename phy-cadence-hdptx-dp.yaml to cdns,mhdp-imx8mq-dp.yaml
> Rename phy-cadence-hdptx-hdmi.yaml to cdns,mhdp-imx8mq-hdmi.yaml
> - Drop redundant words and descriptions.
> - Correct hdmi/dp node name.
>
> v2 is a completely different version compared to v1.
> Previous v1 can be available here [1].
>
> v1->v2:
> - Reuse Cadence mailbox access functions from mhdp8546 instead of
> rockchip DP.
> - Mailbox access functions be convert to marco functions
> that will be referenced by HDP-TX PHY(HDMI/DP) driver too.
> - Plain bridge instead of component driver.
> - Standalone Cadence HDP-TX PHY(HDMI/DP) driver.
> - Audio driver are removed from the patch set, it will be add in another
> patch set later.
>
> [1]
> https://patchwork.kernel.org/project/linux-rockchip/cover/cover.1590982881.
> [email protected]/
>
> Sandor Yu (8):
> drm: bridge: Cadence: convert mailbox functions to macro functions
> dt-bindings: display: bridge: Add Cadence MHDP8501 HDMI and DP
> drm: bridge: Cadence: Add MHDP8501 DP driver
> phy: Add HDMI configuration options
> drm: bridge: Cadence: Add MHDP8501 HDMI driver
> dt-bindings: phy: Add Freescale iMX8MQ DP and HDMI PHY
> phy: freescale: Add DisplayPort PHY driver for i.MX8MQ
> phy: freescale: Add HDMI PHY driver for i.MX8MQ
>
> .../display/bridge/cdns,mhdp8501.yaml | 105 ++
> .../bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml | 53 +
> drivers/gpu/drm/bridge/cadence/Kconfig | 25 +
> drivers/gpu/drm/bridge/cadence/Makefile | 3 +
> .../gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c | 1078 +++++++++++++++++
> .../drm/bridge/cadence/cdns-mhdp8501-hdmi.c | 1024 ++++++++++++++++
> .../gpu/drm/bridge/cadence/cdns-mhdp8501.h | 399 ++++++
> .../drm/bridge/cadence/cdns-mhdp8546-core.c | 195 +--
> .../drm/bridge/cadence/cdns-mhdp8546-core.h | 1 -
> drivers/phy/freescale/Kconfig | 18 +
> drivers/phy/freescale/Makefile | 2 +
> drivers/phy/freescale/phy-fsl-imx8mq-dp.c | 697 +++++++++++
> drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c | 889 ++++++++++++++
> include/drm/bridge/cdns-mhdp-mailbox.h | 240 ++++
> include/linux/phy/phy-hdmi.h | 38 +
> include/linux/phy/phy.h | 7 +-
> 16 files changed, 4578 insertions(+), 196 deletions(-)
> create mode 100644
> Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml create
> mode 100644
> Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml create
> mode 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-dp.c create mode
> 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c create mode
> 100644 drivers/gpu/drm/bridge/cadence/cdns-mhdp8501.h create mode 100644
> drivers/phy/freescale/phy-fsl-imx8mq-dp.c
> create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
> create mode 100644 include/drm/bridge/cdns-mhdp-mailbox.h
> create mode 100644 include/linux/phy/phy-hdmi.h
--
TQ-Systems GmbH | M?hlstra?e 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht M?nchen, HRB 105018
Gesch?ftsf?hrer: Detlef Schneider, R?diger Stahl, Stefan Schneider
http://www.tq-group.com/
Hi Alexander,
Thanks for your comments,
> -----Original Message-----
> From: Alexander Stein <[email protected]>
> Sent: 2023年6月16日 17:35
> To: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]
> Cc: Oliver Brown <[email protected]>; Sandor Yu <[email protected]>;
> dl-linux-imx <[email protected]>; [email protected]; Sandor Yu
> <[email protected]>
> Subject: [EXT] Re: [PATCH v6 6/8] dt-bindings: phy: Add Freescale iMX8MQ DP
> and HDMI PHY
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> Hi Sandor,
>
> Am Donnerstag, 15. Juni 2023, 03:38:16 CEST schrieb Sandor Yu:
> > Add bindings for Freescale iMX8MQ DP and HDMI PHY.
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > .../bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml | 53
> > +++++++++++++++++++
> > 1 file changed, 53 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
> > b/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
> > new file mode 100644 index 000000000000..917f113503dc
> > --- /dev/null
> > +++
> b/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yam
> > +++ l
> > @@ -0,0 +1,53 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> > +http://devi/
> >
> +cetree.org%2Fschemas%2Fphy%2Ffsl%2Cimx8mq-dp-hdmi-phy.yaml%23&d
> ata=05
> >
> +%7C01%7CSandor.yu%40nxp.com%7Cf2d4e5ea99fa4f5776bf08db6e4ce7ba
> %7C686e
> >
> +a1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638225048817792176%7C
> Unknown%7
> >
> +CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haW
> wiLCJX
> >
> +VCI6Mn0%3D%7C3000%7C%7C%7C&sdata=ayYA0rayDR2w1LDgU53VtCitw
> MH9PnoblX2k
> > +Jhbu6Gs%3D&reserved=0
> > +$schema:
> > +http://devi/
> >
> +cetree.org%2Fmeta-schemas%2Fcore.yaml%23&data=05%7C01%7CSandor.
> yu%40n
> >
> +xp.com%7Cf2d4e5ea99fa4f5776bf08db6e4ce7ba%7C686ea1d3bc2b4c6fa92
> cd99c5
> >
> +c301635%7C0%7C0%7C638225048817792176%7CUnknown%7CTWFpbGZs
> b3d8eyJWIjoi
> >
> +MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3
> 000%7C%
> >
> +7C%7C&sdata=DagQtrIblGEk3T1mamSmI2010SRszqhIpJ4piXy3L4M%3D&re
> served=0
> > +
> > +title: Cadence HDP-TX DP/HDMI PHY for Freescale i.MX8MQ SoC
> > +
> > +maintainers:
> > + - Sandor Yu <[email protected]>
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - fsl,imx8mq-dp-phy
> > + - fsl,imx8mq-hdmi-phy
>
> How is it intended to select DP or HDMI? E.g. provide a single default dp-phy
> node in imx8mq.dtsi and change the compatible to HDMI on board-level?
>
The PHY driver select should align with HDMI/DP driver base on board type.
For HDMI board: fsl,imx8mq-hdmi-phy + fsl,imx8mq-mhdp8501-hdmi
For DP board: fsl,imx8mq-dp-phy + fsl,imx8mq-mhdp8501-dp
B.R
Sandor
> Best regards,
> Alexander
>
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + clocks:
> > + items:
> > + - description: PHY reference clock.
> > + - description: APB clock.
> > +
> > + clock-names:
> > + items:
> > + - const: ref
> > + - const: apb
> > +
> > + "#phy-cells":
> > + const: 0
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - clocks
> > + - clock-names
> > + - "#phy-cells"
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/imx8mq-clock.h>
> > + #include <dt-bindings/phy/phy.h>
> > + dp_phy: phy@32c00000 {
> > + compatible = "fsl,imx8mq-dp-phy";
> > + reg = <0x32c00000 0x100000>;
> > + #phy-cells = <0>;
> > + clocks = <&hdmi_phy_27m>, <&clk
> IMX8MQ_CLK_DISP_APB_ROOT>;
> > + clock-names = "ref", "apb";
> > + };
>
>
> --
> TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> Amtsgericht München, HRB 105018
> Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> http://www.tq/
> -group.com%2F&data=05%7C01%7CSandor.yu%40nxp.com%7Cf2d4e5ea99fa
> 4f5776bf08db6e4ce7ba%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C
> 0%7C638225048817792176%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
> LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C
> %7C%7C&sdata=6uih84XByS6aX519z7l50amZl2XnPIMSggyfSD4xd4M%3D&re
> served=0
>
Hi Alexander,
Thanks for your comments,
> -----Original Message-----
> From: Alexander Stein <[email protected]>
> Sent: 2023年6月16日 17:30
> To: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]
> Cc: Oliver Brown <[email protected]>; Sandor Yu <[email protected]>;
> dl-linux-imx <[email protected]>; [email protected]; Sandor Yu
> <[email protected]>
> Subject: [EXT] Re: [PATCH v6 5/8] drm: bridge: Cadence: Add MHDP8501
> HDMI driver
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> Hi Sandor,
>
> thanks for sending a new version.
>
> Am Donnerstag, 15. Juni 2023, 03:38:15 CEST schrieb Sandor Yu:
> > Add a new DRM HDMI bridge driver for Cadence MHDP8501 that used in
> > Freescale i.MX8MQ SoC.
> > MHDP8501 could support HDMI or DisplayPort standards according
> > embedded Firmware running in the uCPU.
> >
> > For iMX8MQ SoC, the HDMI FW was loaded and activated by SOC ROM
> code.
> > Bootload binary included HDMI FW was required for the driver.
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > drivers/gpu/drm/bridge/cadence/Kconfig | 12 +
> > drivers/gpu/drm/bridge/cadence/Makefile | 1 +
> > .../drm/bridge/cadence/cdns-mhdp8501-hdmi.c | 1024
> +++++++++++++++++
> > 3 files changed, 1037 insertions(+)
> > create mode 100644
> > drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
> >
> > diff --git a/drivers/gpu/drm/bridge/cadence/Kconfig
> > b/drivers/gpu/drm/bridge/cadence/Kconfig index
> > 5b7ec4e49aa1..bee05e834055
> > 100644
> > --- a/drivers/gpu/drm/bridge/cadence/Kconfig
> > +++ b/drivers/gpu/drm/bridge/cadence/Kconfig
> > @@ -59,3 +59,15 @@ config DRM_CDNS_MHDP8501_DP
> > Support Cadence MHDP8501 DisplayPort driver.
> > Cadence MHDP8501 Controller support one or more protocols,
> > DisplayPort firmware is required for this driver.
> > +
> > +config DRM_CDNS_MHDP8501_HDMI
> > + tristate "Cadence MHDP8501 HDMI DRM driver"
> > + select DRM_KMS_HELPER
> > + select DRM_PANEL_BRIDGE
> > + select DRM_DISPLAY_HELPER
> > + select DRM_CDNS_AUDIO
> > + depends on OF
> > + help
> > + Support Cadence MHDP8501 HDMI driver.
> > + Cadence MHDP8501 Controller support one or more protocols,
> > + HDMI firmware is required for this driver.
> > diff --git a/drivers/gpu/drm/bridge/cadence/Makefile
> > b/drivers/gpu/drm/bridge/cadence/Makefile index
> > 5842e4540c62..8a129c14ac14
> > 100644
> > --- a/drivers/gpu/drm/bridge/cadence/Makefile
> > +++ b/drivers/gpu/drm/bridge/cadence/Makefile
> > @@ -7,3 +7,4 @@ cdns-mhdp8546-y := cdns-mhdp8546-core.o
> > cdns-mhdp8546-hdcp.o
> > cdns-mhdp8546-$(CONFIG_DRM_CDNS_MHDP8546_J721E) +=
> > cdns-mhdp8546-j721e.o
> >
> > obj-$(CONFIG_DRM_CDNS_MHDP8501_DP) += cdns-mhdp8501-dp.o
> > +obj-$(CONFIG_DRM_CDNS_MHDP8501_HDMI) += cdns-mhdp8501-hdmi.o
> > diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
> > b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c new file mode
> > 100644 index 000000000000..43673f1b50f6
> > --- /dev/null
> > +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
> [...]
> > +static int cdns_hdmi_bridge_attach(struct drm_bridge *bridge,
> > + enum drm_bridge_attach_flags flags)
> {
> > + struct cdns_mhdp_device *mhdp = bridge->driver_private;
> > + struct drm_mode_config *config = &bridge->dev->mode_config;
> > + struct drm_encoder *encoder = bridge->encoder;
> > + struct drm_connector *connector = &mhdp->connector;
> > +
> > + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
> > + connector->interlace_allowed = 0;
> > + connector->polled = DRM_CONNECTOR_POLL_HPD;
> > +
> > + drm_connector_helper_add(connector,
> &cdns_hdmi_connector_helper_funcs);
> > +
> > + drm_connector_init(bridge->dev, connector,
> &cdns_hdmi_connector_funcs,
> > +
> DRM_MODE_CONNECTOR_HDMIA);
> > +
> > + drm_object_attach_property(&connector->base,
> > + config-
> >hdr_output_metadata_property, 0);
> > +
> > + if
> > + (!drm_mode_create_hdmi_colorspace_property(connector))
>
> This is missing a 2nd parameter.
I have not found function drm_mode_create_hdmi_colorspace_property need 2nd parameter in L6.1.
And those connector init functions will be remove in the next version according Sam's comments, because they are not really needed.
B.R
Sandor
>
> > +
> drm_object_attach_property(&connector->base,
> > + connector-
> >colorspace_property, 0);
> > +
> > + drm_connector_attach_encoder(connector, encoder);
> > + }
> > +
> > + return 0;
> > +}
> [...]
>
> Best regards,
> Alexander
> --
> TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> Amtsgericht München, HRB 105018
> Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> http://www.tq/
> -group.com%2F&data=05%7C01%7CSandor.yu%40nxp.com%7C77fbaace052c
> 4ccf338c08db6e4c40cb%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C
> 0%7C638225046010817530%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
> LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C
> %7C%7C&sdata=JJjeV2InXzHyefL4uiK9%2BRtSVjoBYd%2FwIqSbIQhDH90%3D
> &reserved=0
>
Hi Alexander,
Thanks for your comments,
> -----Original Message-----
> From: Alexander Stein <[email protected]>
> Sent: 2023年6月16日 17:32
> To: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]
> Cc: Oliver Brown <[email protected]>; Sandor Yu <[email protected]>;
> dl-linux-imx <[email protected]>; [email protected]; Sandor Yu
> <[email protected]>
> Subject: [EXT] Re: [PATCH v6 2/8] dt-bindings: display: bridge: Add Cadence
> MHDP8501 HDMI and DP
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> Hi Sandor,
>
> Am Donnerstag, 15. Juni 2023, 03:38:12 CEST schrieb Sandor Yu:
> > Add bindings for Cadence MHDP8501 DisplayPort and HDMI driver.
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > .../display/bridge/cdns,mhdp8501.yaml | 105
> ++++++++++++++++++
> > 1 file changed, 105 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> > b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> > new file mode 100644 index 000000000000..a54756815e6f
> > --- /dev/null
> > +++
> b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.y
> > +++ aml
> > @@ -0,0 +1,105 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> > +http://devi/
> >
> +cetree.org%2Fschemas%2Fdisplay%2Fbridge%2Fcdns%2Cmhdp8501.yaml%
> 23&dat
> >
> +a=05%7C01%7CSandor.yu%40nxp.com%7C6ef2c732b3674cb2896c08db6e4
> c827b%7C
> >
> +686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C63822504710561225
> 8%7CUnkno
> >
> +wn%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1
> haWwi
> >
> +LCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=DGYYt2LQ%2FhlNBVd2m0s
> aXTm9IoKKwn
> > +X7CTTplhbLxcI%3D&reserved=0
> > +$schema:
> > +http://devi/
> >
> +cetree.org%2Fmeta-schemas%2Fcore.yaml%23&data=05%7C01%7CSandor.
> yu%40n
> >
> +xp.com%7C6ef2c732b3674cb2896c08db6e4c827b%7C686ea1d3bc2b4c6fa9
> 2cd99c5
> >
> +c301635%7C0%7C0%7C638225047105612258%7CUnknown%7CTWFpbGZs
> b3d8eyJWIjoi
> >
> +MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3
> 000%7C%
> >
> +7C%7C&sdata=SkTFYM7HHgJmFUkyo3Ftf%2B8FdGqlnty0Ch6ggwSPeLY%3D
> &reserved
> > +=0
> > +
> > +title: Cadence MHDP8501 Displayport bridge
> > +
> > +maintainers:
> > + - Sandor Yu <[email protected]>
> > +
> > +description:
> > + The Cadence MHDP8501 Displayport/HDMI TX interface.
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - cdns,mhdp8501-dp
> > + - cdns,mhdp8501-hdmi
> > + - fsl,imx8mq-mhdp8501-dp
> > + - fsl,imx8mq-mhdp8501-hdmi
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + clocks:
> > + maxItems: 1
> > + description: MHDP8501 DP/HDMI APB clock.
> > +
> > + phys:
> > + maxItems: 1
> > +
> > + interrupts:
> > + items:
> > + - description: Hotplug cable plugin.
> > + - description: Hotplug cable plugout.
> > +
> > + interrupt-names:
> > + items:
> > + - const: plug_in
> > + - const: plug_out
> > +
> > + ports:
> > + $ref: /schemas/graph.yaml#/properties/ports
> > +
> > + properties:
> > + port@0:
> > + $ref: /schemas/graph.yaml#/properties/port
> > + description:
> > + Input port from display controller output.
> > + port@1:
> > + $ref: /schemas/graph.yaml#/properties/port
> > + description:
> > + Output port to DP/HDMI connector.
> > +
> > + required:
> > + - port@0
> > + - port@1
>
> You mark these ports as required, but apparently the drivers do not use them,
> AFAICT. E.g. missing port@1 is not resulting in an error, at lease for HDMI one.
>
Yes, port@1 is not really needed, I add it just to follow HDMI/DP framework that same as other platforms in community code.
B.R
Sandor
> Best regards,
> Alexander
>
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - clocks
> > + - interrupts
> > + - interrupt-names
> > + - phys
> > + - ports
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/imx8mq-clock.h>
> > + #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > + mhdp_dp: dp-bridge@32c00000 {
> > + compatible = "fsl,imx8mq-mhdp8501-dp";
> > + reg = <0x32c00000 0x100000>;
> > + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
> > + interrupt-names = "plug_in", "plug_out";
> > + clocks = <&clk IMX8MQ_CLK_DISP_APB_ROOT>;
> > + phys = <&dp_phy>;
> > +
> > + ports {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + port@0 {
> > + reg = <0>;
> > +
> > + mhdp_in: endpoint {
> > + remote-endpoint = <&dcss_out>;
> > + };
> > + };
> > +
> > + port@1 {
> > + reg = <1>;
> > +
> > + mhdp_out: endpoint {
> > + remote-endpoint = <&dp_con>;
> > + };
> > + };
> > + };
> > + };
>
>
> --
> TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> Amtsgericht München, HRB 105018
> Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> http://www.tq/
> -group.com%2F&data=05%7C01%7CSandor.yu%40nxp.com%7C6ef2c732b367
> 4cb2896c08db6e4c827b%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C
> 0%7C638225047105612258%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
> LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C
> %7C%7C&sdata=xJdLi2HJ72ShBwT%2FfUdZ3uLx%2FIJEPmTQJHGVXe0JVik%3
> D&reserved=0
>
Hi Sandor,
Am Montag, 19. Juni 2023, 05:11:02 CEST schrieb Sandor Yu:
> Hi Alexander,
>
> Thanks for your comments,
>
>
> > -----Original Message-----
> > From: Alexander Stein <[email protected]>
> > Sent: 2023年6月16日 17:30
> > To: [email protected]; [email protected];
> > [email protected]; [email protected];
> > [email protected]; [email protected]; [email protected];
> > [email protected]; [email protected]; [email protected];
> > [email protected]; [email protected]; [email protected];
> > [email protected]; [email protected];
> > [email protected]; [email protected];
> > [email protected]; [email protected]
> > Cc: Oliver Brown <[email protected]>; Sandor Yu <[email protected]>;
> > dl-linux-imx <[email protected]>; [email protected]; Sandor Yu
> > <[email protected]>
> > Subject: [EXT] Re: [PATCH v6 5/8] drm: bridge: Cadence: Add MHDP8501
> > HDMI driver
> >
> >
> >
> > Caution: This is an external email. Please take care when clicking links
> > or
opening attachments. When in doubt, report the message using the
> > 'Report this email' button
> >
> >
> >
> >
> > Hi Sandor,
> >
> >
> >
> > thanks for sending a new version.
> >
> >
> >
> > Am Donnerstag, 15. Juni 2023, 03:38:15 CEST schrieb Sandor Yu:
> >
> > > Add a new DRM HDMI bridge driver for Cadence MHDP8501 that used in
> > > Freescale i.MX8MQ SoC.
> > > MHDP8501 could support HDMI or DisplayPort standards according
> > > embedded Firmware running in the uCPU.
> > >
> > >
> > >
> > > For iMX8MQ SoC, the HDMI FW was loaded and activated by SOC ROM
> >
> > code.
> >
> > > Bootload binary included HDMI FW was required for the driver.
> > >
> > >
> > >
> > > Signed-off-by: Sandor Yu <[email protected]>
> > > ---
> > >
> > > drivers/gpu/drm/bridge/cadence/Kconfig | 12 +
> > > drivers/gpu/drm/bridge/cadence/Makefile | 1 +
> > > .../drm/bridge/cadence/cdns-mhdp8501-hdmi.c | 1024
> >
> > +++++++++++++++++
> >
> > > 3 files changed, 1037 insertions(+)
> > > create mode 100644
> > >
> > > drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
> > >
> > >
> > >
> > > diff --git a/drivers/gpu/drm/bridge/cadence/Kconfig
> > > b/drivers/gpu/drm/bridge/cadence/Kconfig index
> > > 5b7ec4e49aa1..bee05e834055
> > > 100644
> > > --- a/drivers/gpu/drm/bridge/cadence/Kconfig
> > > +++ b/drivers/gpu/drm/bridge/cadence/Kconfig
> > > @@ -59,3 +59,15 @@ config DRM_CDNS_MHDP8501_DP
> > >
> > > Support Cadence MHDP8501 DisplayPort driver.
> > > Cadence MHDP8501 Controller support one or more protocols,
> > > DisplayPort firmware is required for this driver.
> > >
> > > +
> > > +config DRM_CDNS_MHDP8501_HDMI
> > > + tristate "Cadence MHDP8501 HDMI DRM driver"
> > > + select DRM_KMS_HELPER
> > > + select DRM_PANEL_BRIDGE
> > > + select DRM_DISPLAY_HELPER
> > > + select DRM_CDNS_AUDIO
> > > + depends on OF
> > > + help
> > > + Support Cadence MHDP8501 HDMI driver.
> > > + Cadence MHDP8501 Controller support one or more protocols,
> > > + HDMI firmware is required for this driver.
> > > diff --git a/drivers/gpu/drm/bridge/cadence/Makefile
> > > b/drivers/gpu/drm/bridge/cadence/Makefile index
> > > 5842e4540c62..8a129c14ac14
> > > 100644
> > > --- a/drivers/gpu/drm/bridge/cadence/Makefile
> > > +++ b/drivers/gpu/drm/bridge/cadence/Makefile
> > > @@ -7,3 +7,4 @@ cdns-mhdp8546-y := cdns-mhdp8546-core.o
> > > cdns-mhdp8546-hdcp.o
> > > cdns-mhdp8546-$(CONFIG_DRM_CDNS_MHDP8546_J721E) +=
> > > cdns-mhdp8546-j721e.o
> > >
> > >
> > >
> > > obj-$(CONFIG_DRM_CDNS_MHDP8501_DP) += cdns-mhdp8501-dp.o
> > >
> > > +obj-$(CONFIG_DRM_CDNS_MHDP8501_HDMI) += cdns-mhdp8501-hdmi.o
> > > diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
> > > b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c new file mode
> > > 100644 index 000000000000..43673f1b50f6
> > > --- /dev/null
> > > +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8501-hdmi.c
> >
> > [...]
> >
> > > +static int cdns_hdmi_bridge_attach(struct drm_bridge *bridge,
> > > + enum drm_bridge_attach_flags flags)
> >
> > {
> >
> > > + struct cdns_mhdp_device *mhdp = bridge->driver_private;
> > > + struct drm_mode_config *config = &bridge->dev->mode_config;
> > > + struct drm_encoder *encoder = bridge->encoder;
> > > + struct drm_connector *connector = &mhdp->connector;
> > > +
> > > + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
> > > + connector->interlace_allowed = 0;
> > > + connector->polled = DRM_CONNECTOR_POLL_HPD;
> > > +
> > > + drm_connector_helper_add(connector,
> >
> > &cdns_hdmi_connector_helper_funcs);
> >
> > > +
> > > + drm_connector_init(bridge->dev, connector,
> >
> > &cdns_hdmi_connector_funcs,
> >
> > > +
> >
> > DRM_MODE_CONNECTOR_HDMIA);
> >
> > > +
> > > + drm_object_attach_property(&connector->base,
> > > + config-
> > >
> > >hdr_output_metadata_property, 0);
> > >
> > > +
> > > + if
> > > + (!drm_mode_create_hdmi_colorspace_property(connector))
> >
> >
> >
> > This is missing a 2nd parameter.
>
> I have not found function drm_mode_create_hdmi_colorspace_property need 2nd
> parameter in L6.1.
Ah, I see. The new parameter is/will be part of v6.3.
> And those connector init functions will be remove in
> the next version according Sam's comments, because they are not really
> needed.
Okay, nice. Please put me on cc as well. Thanks.
Best regards,
Alexander
> B.R
> Sandor
>
> >
> >
> > > +
> >
> > drm_object_attach_property(&connector->base,
> >
> > > + connector-
> > >
> > >colorspace_property, 0);
> > >
> > > +
> > > + drm_connector_attach_encoder(connector, encoder);
> > > + }
> > > +
> > > + return 0;
> > > +}
> >
> > [...]
> >
> >
> >
> > Best regards,
> > Alexander
> > --
> > TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> > Amtsgericht München, HRB 105018
> > Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> > http://www.tq/
> > -group.com%2F&data=05%7C01%7CSandor.yu%40nxp.com%7C77fbaace052c
> > 4ccf338c08db6e4c40cb%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C
> > 0%7C638225046010817530%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
> > LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C
> > %7C%7C&sdata=JJjeV2InXzHyefL4uiK9%2BRtSVjoBYd%2FwIqSbIQhDH90%3D
> > &reserved=0
> >
> >
>
>
--
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
http://www.tq-group.com/
On Fri, Jun 16, 2023 at 11:31:43AM +0200, Alexander Stein wrote:
> Hi Sandor,
>
> Am Donnerstag, 15. Juni 2023, 03:38:12 CEST schrieb Sandor Yu:
> > Add bindings for Cadence MHDP8501 DisplayPort and HDMI driver.
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > .../display/bridge/cdns,mhdp8501.yaml | 105 ++++++++++++++++++
> > 1 file changed, 105 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> > b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml new
> > file mode 100644
> > index 000000000000..a54756815e6f
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> > @@ -0,0 +1,105 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/display/bridge/cdns,mhdp8501.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Cadence MHDP8501 Displayport bridge
> > +
> > +maintainers:
> > + - Sandor Yu <[email protected]>
> > +
> > +description:
> > + The Cadence MHDP8501 Displayport/HDMI TX interface.
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - cdns,mhdp8501-dp
> > + - cdns,mhdp8501-hdmi
> > + - fsl,imx8mq-mhdp8501-dp
> > + - fsl,imx8mq-mhdp8501-hdmi
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + clocks:
> > + maxItems: 1
> > + description: MHDP8501 DP/HDMI APB clock.
> > +
> > + phys:
> > + maxItems: 1
> > +
> > + interrupts:
> > + items:
> > + - description: Hotplug cable plugin.
> > + - description: Hotplug cable plugout.
> > +
> > + interrupt-names:
> > + items:
> > + - const: plug_in
> > + - const: plug_out
> > +
> > + ports:
> > + $ref: /schemas/graph.yaml#/properties/ports
> > +
> > + properties:
> > + port@0:
> > + $ref: /schemas/graph.yaml#/properties/port
> > + description:
> > + Input port from display controller output.
> > + port@1:
> > + $ref: /schemas/graph.yaml#/properties/port
> > + description:
> > + Output port to DP/HDMI connector.
> > +
> > + required:
> > + - port@0
> > + - port@1
>
> You mark these ports as required, but apparently the drivers do not use them,
> AFAICT. E.g. missing port@1 is not resulting in an error, at lease for HDMI
> one.
A connector node should be required whether a particular OS requires it
or not. The bindings without predate defining a connector node.
Rob
On Thu, Jun 15, 2023 at 09:38:12AM +0800, Sandor Yu wrote:
> Add bindings for Cadence MHDP8501 DisplayPort and HDMI driver.
Bindings are for h/w, not a driver.
>
> Signed-off-by: Sandor Yu <[email protected]>
> ---
> .../display/bridge/cdns,mhdp8501.yaml | 105 ++++++++++++++++++
> 1 file changed, 105 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> new file mode 100644
> index 000000000000..a54756815e6f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> @@ -0,0 +1,105 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/cdns,mhdp8501.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cadence MHDP8501 Displayport bridge
> +
> +maintainers:
> + - Sandor Yu <[email protected]>
> +
> +description:
> + The Cadence MHDP8501 Displayport/HDMI TX interface.
> +
> +properties:
> + compatible:
> + enum:
> + - cdns,mhdp8501-dp
> + - cdns,mhdp8501-hdmi
> + - fsl,imx8mq-mhdp8501-dp
> + - fsl,imx8mq-mhdp8501-hdmi
Is DP vs. HDMI fixed for a particular SoC implementation or it's a board
level decision. In the latter case, the type of connector should
determine the mode, not compatible.
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> + description: MHDP8501 DP/HDMI APB clock.
Seems odd there's no clock tied to the pixel/serdes clock.
> +
> + phys:
> + maxItems: 1
> +
> + interrupts:
> + items:
> + - description: Hotplug cable plugin.
> + - description: Hotplug cable plugout.
> +
> + interrupt-names:
> + items:
> + - const: plug_in
> + - const: plug_out
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/ports
> +
> + properties:
> + port@0:
> + $ref: /schemas/graph.yaml#/properties/port
> + description:
> + Input port from display controller output.
> + port@1:
> + $ref: /schemas/graph.yaml#/properties/port
> + description:
> + Output port to DP/HDMI connector.
> +
> + required:
> + - port@0
> + - port@1
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - interrupts
> + - interrupt-names
> + - phys
> + - ports
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/imx8mq-clock.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + mhdp_dp: dp-bridge@32c00000 {
> + compatible = "fsl,imx8mq-mhdp8501-dp";
> + reg = <0x32c00000 0x100000>;
> + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "plug_in", "plug_out";
> + clocks = <&clk IMX8MQ_CLK_DISP_APB_ROOT>;
> + phys = <&dp_phy>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> +
> + mhdp_in: endpoint {
> + remote-endpoint = <&dcss_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + mhdp_out: endpoint {
> + remote-endpoint = <&dp_con>;
> + };
> + };
> + };
> + };
> --
> 2.34.1
>
Hi Rob,
Thanks for your comments,
> -----Original Message-----
> From: Rob Herring <[email protected]>
> Sent: 2023??6??20?? 23:49
> To: Sandor Yu <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; dl-linux-imx
> <[email protected]>; Oliver Brown <[email protected]>
> Subject: [EXT] Re: [PATCH v6 2/8] dt-bindings: display: bridge: Add Cadence
> MHDP8501 HDMI and DP
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> On Thu, Jun 15, 2023 at 09:38:12AM +0800, Sandor Yu wrote:
> > Add bindings for Cadence MHDP8501 DisplayPort and HDMI driver.
>
> Bindings are for h/w, not a driver.
OK, I will change it in the next version.
>
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > .../display/bridge/cdns,mhdp8501.yaml | 105
> ++++++++++++++++++
> > 1 file changed, 105 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> > b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.yaml
> > new file mode 100644
> > index 000000000000..a54756815e6f
> > --- /dev/null
> > +++
> b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8501.y
> > +++ aml
> > @@ -0,0 +1,105 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> > +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi
> >
> +cetree.org%2Fschemas%2Fdisplay%2Fbridge%2Fcdns%2Cmhdp8501.yaml%
> 23&dat
> >
> +a=05%7C01%7CSandor.yu%40nxp.com%7C4d4e118d60d744b5dba708db71
> a5de79%7C
> >
> +686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C63822872943965530
> 2%7CUnkno
> >
> +wn%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1
> haWwi
> >
> +LCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=UEsMdkZBmfD7tM1wzJ71
> DHQoi4zVOkpT
> > +A9TNE7Rxn%2B8%3D&reserved=0
> > +$schema:
> > +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi
> >
> +cetree.org%2Fmeta-schemas%2Fcore.yaml%23&data=05%7C01%7CSandor.
> yu%40n
> >
> +xp.com%7C4d4e118d60d744b5dba708db71a5de79%7C686ea1d3bc2b4c6fa
> 92cd99c5
> >
> +c301635%7C0%7C0%7C638228729439655302%7CUnknown%7CTWFpbGZs
> b3d8eyJWIjoi
> >
> +MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3
> 000%7C%
> >
> +7C%7C&sdata=Zu3v0yG2BXWXvTWV5oLiGvdu3O3PhK%2FrYNJIS2zHwpI%3
> D&reserved
> > +=0
> > +
> > +title: Cadence MHDP8501 Displayport bridge
> > +
> > +maintainers:
> > + - Sandor Yu <[email protected]>
> > +
> > +description:
> > + The Cadence MHDP8501 Displayport/HDMI TX interface.
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - cdns,mhdp8501-dp
> > + - cdns,mhdp8501-hdmi
> > + - fsl,imx8mq-mhdp8501-dp
> > + - fsl,imx8mq-mhdp8501-hdmi
>
> Is DP vs. HDMI fixed for a particular SoC implementation or it's a board level
> decision. In the latter case, the type of connector should determine the mode,
> not compatible.
DP or HDMI is bord level decision.
Because DP and HDMI have different initialize process and less functions could be reuse, so they have different drivers.
Please check it in patch
[PATCH v6 3/8] drm: bridge: Cadence: Add MHDP8501 DP driver
[PATCH v6 5/8] drm: bridge: Cadence: Add MHDP8501 HDMI driver
If use the type of connector to determine the mode, hdmi and DP driver have to combine into one driver.
So the compatible may the better choice.
>
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + clocks:
> > + maxItems: 1
> > + description: MHDP8501 DP/HDMI APB clock.
>
> Seems odd there's no clock tied to the pixel/serdes clock.
MHDP8501 for i.MX8MQ use the pixel clock from PHY PLL not from external CCM.
The pixel clock will be set in function phy_configure
B.R
Sandor
>
> > +
> > + phys:
> > + maxItems: 1
> > +
> > + interrupts:
> > + items:
> > + - description: Hotplug cable plugin.
> > + - description: Hotplug cable plugout.
> > +
> > + interrupt-names:
> > + items:
> > + - const: plug_in
> > + - const: plug_out
> > +
> > + ports:
> > + $ref: /schemas/graph.yaml#/properties/ports
> > +
> > + properties:
> > + port@0:
> > + $ref: /schemas/graph.yaml#/properties/port
> > + description:
> > + Input port from display controller output.
> > + port@1:
> > + $ref: /schemas/graph.yaml#/properties/port
> > + description:
> > + Output port to DP/HDMI connector.
> > +
> > + required:
> > + - port@0
> > + - port@1
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - clocks
> > + - interrupts
> > + - interrupt-names
> > + - phys
> > + - ports
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/imx8mq-clock.h>
> > + #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > + mhdp_dp: dp-bridge@32c00000 {
> > + compatible = "fsl,imx8mq-mhdp8501-dp";
> > + reg = <0x32c00000 0x100000>;
> > + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
> > + interrupt-names = "plug_in", "plug_out";
> > + clocks = <&clk IMX8MQ_CLK_DISP_APB_ROOT>;
> > + phys = <&dp_phy>;
> > +
> > + ports {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + port@0 {
> > + reg = <0>;
> > +
> > + mhdp_in: endpoint {
> > + remote-endpoint = <&dcss_out>;
> > + };
> > + };
> > +
> > + port@1 {
> > + reg = <1>;
> > +
> > + mhdp_out: endpoint {
> > + remote-endpoint = <&dp_con>;
> > + };
> > + };
> > + };
> > + };
> > --
> > 2.34.1
> >
On 21/06/2023 04:23, Sandor Yu wrote:
>>> +
>>> +properties:
>>> + compatible:
>>> + enum:
>>> + - cdns,mhdp8501-dp
>>> + - cdns,mhdp8501-hdmi
>>> + - fsl,imx8mq-mhdp8501-dp
>>> + - fsl,imx8mq-mhdp8501-hdmi
>>
>> Is DP vs. HDMI fixed for a particular SoC implementation or it's a board level
>> decision. In the latter case, the type of connector should determine the mode,
>> not compatible.
> DP or HDMI is bord level decision.
Then it's a connector, not compatible.
> Because DP and HDMI have different initialize process and less functions could be reuse, so they have different drivers.
How do you organize drivers is independent of bindings.
> Please check it in patch
> [PATCH v6 3/8] drm: bridge: Cadence: Add MHDP8501 DP driver
> [PATCH v6 5/8] drm: bridge: Cadence: Add MHDP8501 HDMI driver
>
> If use the type of connector to determine the mode, hdmi and DP driver have to combine into one driver.
> So the compatible may the better choice.
Why? Because one driver implementation tells you to do that? Bindings
are for hardware, not for driver, so whatever you have to do in drivers
is not convincing argument.
Best regards,
Krzysztof
On 15-06-23, 09:38, Sandor Yu wrote:
> Allow HDMI PHYs to be configured through the generic
> functions through a custom structure added to the generic union.
>
> The parameters added here are based on HDMI PHY
> implementation practices. The current set of parameters
> should cover the potential users.
>
> Signed-off-by: Sandor Yu <[email protected]>
> ---
> include/linux/phy/phy-hdmi.h | 38 ++++++++++++++++++++++++++++++++++++
> include/linux/phy/phy.h | 7 ++++++-
> 2 files changed, 44 insertions(+), 1 deletion(-)
> create mode 100644 include/linux/phy/phy-hdmi.h
>
> diff --git a/include/linux/phy/phy-hdmi.h b/include/linux/phy/phy-hdmi.h
> new file mode 100644
> index 000000000000..5765aa5bc175
> --- /dev/null
> +++ b/include/linux/phy/phy-hdmi.h
> @@ -0,0 +1,38 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright 2022 NXP
> + */
> +
> +#ifndef __PHY_HDMI_H_
> +#define __PHY_HDMI_H_
> +
> +/**
> + * Pixel Encoding as HDMI Specification
> + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
> + * YUV420: HDMI Specification 2.a Section 7.1
> + */
> +enum hdmi_phy_colorspace {
> + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
> + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
> + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
> + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
Better add this comments and above one as expected by kernel-doc for
enum..
> + HDMI_PHY_COLORSPACE_RESERVED4,
> + HDMI_PHY_COLORSPACE_RESERVED5,
> + HDMI_PHY_COLORSPACE_RESERVED6,
> +};
> +
> +/**
> + * struct phy_configure_opts_hdmi - HDMI configuration set
> + * @pixel_clk_rate: Pixel clock of video modes in KHz.
> + * @bpc: Maximum bits per color channel.
> + * @color_space: Colorspace in enum hdmi_phy_colorspace.
> + *
> + * This structure is used to represent the configuration state of a HDMI phy.
> + */
> +struct phy_configure_opts_hdmi {
> + unsigned int pixel_clk_rate;
> + unsigned int bpc;
> + enum hdmi_phy_colorspace color_space;
> +};
> +
> +#endif /* __PHY_HDMI_H_ */
> diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
> index 3a570bc59fc7..93d77d45b1d4 100644
> --- a/include/linux/phy/phy.h
> +++ b/include/linux/phy/phy.h
> @@ -17,6 +17,7 @@
> #include <linux/regulator/consumer.h>
>
> #include <linux/phy/phy-dp.h>
> +#include <linux/phy/phy-hdmi.h>
> #include <linux/phy/phy-lvds.h>
> #include <linux/phy/phy-mipi-dphy.h>
>
> @@ -42,7 +43,8 @@ enum phy_mode {
> PHY_MODE_MIPI_DPHY,
> PHY_MODE_SATA,
> PHY_MODE_LVDS,
> - PHY_MODE_DP
> + PHY_MODE_DP,
> + PHY_MODE_HDMI,
> };
>
> enum phy_media {
> @@ -60,11 +62,14 @@ enum phy_media {
> * the DisplayPort protocol.
> * @lvds: Configuration set applicable for phys supporting
> * the LVDS phy mode.
> + * @hdmi: Configuration set applicable for phys supporting
> + * the HDMI phy mode.
> */
> union phy_configure_opts {
> struct phy_configure_opts_mipi_dphy mipi_dphy;
> struct phy_configure_opts_dp dp;
> struct phy_configure_opts_lvds lvds;
> + struct phy_configure_opts_hdmi hdmi;
> };
>
> /**
> --
> 2.34.1
--
~Vinod
On 15-06-23, 09:38, Sandor Yu wrote:
> Add Cadence HDP-TX DisplayPort PHY driver for i.MX8MQ
>
> Cadence HDP-TX PHY could be put in either DP mode or
> HDMI mode base on the configuration chosen.
> DisplayPort PHY mode is configurated in the driver.
>
> Signed-off-by: Sandor Yu <[email protected]>
> ---
> drivers/phy/freescale/Kconfig | 9 +
> drivers/phy/freescale/Makefile | 1 +
> drivers/phy/freescale/phy-fsl-imx8mq-dp.c | 697 ++++++++++++++++++++++
> 3 files changed, 707 insertions(+)
> create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-dp.c
>
> diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig
> index 853958fb2c06..a99ee370eda6 100644
> --- a/drivers/phy/freescale/Kconfig
> +++ b/drivers/phy/freescale/Kconfig
> @@ -35,6 +35,15 @@ config PHY_FSL_IMX8M_PCIE
> Enable this to add support for the PCIE PHY as found on
> i.MX8M family of SOCs.
>
> +config PHY_CADENCE_DP_PHY
> + tristate "Cadence HDPTX DP PHY support"
> + depends on OF && HAS_IOMEM
> + depends on COMMON_CLK
> + select GENERIC_PHY
> + help
> + Enable this to support the Cadence HDPTX DP PHY driver
> + on NXP's i.MX8MQ SOC.
> +
> endif
>
> config PHY_FSL_LYNX_28G
> diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile
> index cedb328bc4d2..c3bdf3fa2e72 100644
> --- a/drivers/phy/freescale/Makefile
> +++ b/drivers/phy/freescale/Makefile
> @@ -4,3 +4,4 @@ obj-$(CONFIG_PHY_MIXEL_LVDS_PHY) += phy-fsl-imx8qm-lvds-phy.o
> obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o
> obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o
> obj-$(CONFIG_PHY_FSL_LYNX_28G) += phy-fsl-lynx-28g.o
> +obj-$(CONFIG_PHY_CADENCE_DP_PHY) += phy-fsl-imx8mq-dp.o
> diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-dp.c b/drivers/phy/freescale/phy-fsl-imx8mq-dp.c
> new file mode 100644
> index 000000000000..2bd6772a5d3b
> --- /dev/null
> +++ b/drivers/phy/freescale/phy-fsl-imx8mq-dp.c
> @@ -0,0 +1,697 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Cadence HDP-TX Display Port Interface (DP) PHY driver
> + *
> + * Copyright (C) 2022 NXP Semiconductor, Inc.
> + */
> +#include <asm/unaligned.h>
> +#include <linux/clk.h>
> +#include <linux/kernel.h>
> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +
> +#include <drm/bridge/cdns-mhdp-mailbox.h>
> +
> +#define ADDR_PHY_AFE 0x80000
Is this always fixed for every phy generation?
> +
> +/* PHY registers */
> +#define CMN_SSM_BIAS_TMR 0x0022
> +#define CMN_PLLSM0_PLLEN_TMR 0x0029
> +#define CMN_PLLSM0_PLLPRE_TMR 0x002A
> +#define CMN_PLLSM0_PLLVREF_TMR 0x002B
> +#define CMN_PLLSM0_PLLLOCK_TMR 0x002C
> +#define CMN_PLLSM0_USER_DEF_CTRL 0x002F
> +#define CMN_PSM_CLK_CTRL 0x0061
> +#define CMN_PLL0_VCOCAL_START 0x0081
> +#define CMN_PLL0_VCOCAL_INIT_TMR 0x0084
> +#define CMN_PLL0_VCOCAL_ITER_TMR 0x0085
> +#define CMN_PLL0_INTDIV 0x0094
> +#define CMN_PLL0_FRACDIV 0x0095
> +#define CMN_PLL0_HIGH_THR 0x0096
> +#define CMN_PLL0_DSM_DIAG 0x0097
> +#define CMN_PLL0_SS_CTRL2 0x0099
> +#define CMN_ICAL_INIT_TMR 0x00C4
> +#define CMN_ICAL_ITER_TMR 0x00C5
> +#define CMN_RXCAL_INIT_TMR 0x00D4
> +#define CMN_RXCAL_ITER_TMR 0x00D5
> +#define CMN_TXPUCAL_INIT_TMR 0x00E4
> +#define CMN_TXPUCAL_ITER_TMR 0x00E5
> +#define CMN_TXPDCAL_INIT_TMR 0x00F4
> +#define CMN_TXPDCAL_ITER_TMR 0x00F5
> +#define CMN_ICAL_ADJ_INIT_TMR 0x0102
> +#define CMN_ICAL_ADJ_ITER_TMR 0x0103
> +#define CMN_RX_ADJ_INIT_TMR 0x0106
> +#define CMN_RX_ADJ_ITER_TMR 0x0107
> +#define CMN_TXPU_ADJ_INIT_TMR 0x010A
> +#define CMN_TXPU_ADJ_ITER_TMR 0x010B
> +#define CMN_TXPD_ADJ_INIT_TMR 0x010E
> +#define CMN_TXPD_ADJ_ITER_TMR 0x010F
> +#define CMN_DIAG_PLL0_FBH_OVRD 0x01C0
> +#define CMN_DIAG_PLL0_FBL_OVRD 0x01C1
> +#define CMN_DIAG_PLL0_OVRD 0x01C2
> +#define CMN_DIAG_PLL0_TEST_MODE 0x01C4
> +#define CMN_DIAG_PLL0_V2I_TUNE 0x01C5
> +#define CMN_DIAG_PLL0_CP_TUNE 0x01C6
> +#define CMN_DIAG_PLL0_LF_PROG 0x01C7
> +#define CMN_DIAG_PLL0_PTATIS_TUNE1 0x01C8
> +#define CMN_DIAG_PLL0_PTATIS_TUNE2 0x01C9
> +#define CMN_DIAG_HSCLK_SEL 0x01E0
> +#define CMN_DIAG_PER_CAL_ADJ 0x01EC
> +#define CMN_DIAG_CAL_CTRL 0x01ED
> +#define CMN_DIAG_ACYA 0x01FF
> +#define XCVR_PSM_RCTRL 0x4001
> +#define XCVR_PSM_CAL_TMR 0x4002
> +#define XCVR_PSM_A0IN_TMR 0x4003
> +#define TX_TXCC_CAL_SCLR_MULT_0 0x4047
> +#define TX_TXCC_CPOST_MULT_00_0 0x404C
> +#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
> +#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
> +#define XCVR_DIAG_HSCLK_SEL 0x40E1
> +#define XCVR_DIAG_LANE_FCM_EN_MGN_TMR 0x40F2
> +#define TX_PSC_A0 0x4100
> +#define TX_PSC_A1 0x4101
> +#define TX_PSC_A2 0x4102
> +#define TX_PSC_A3 0x4103
> +#define TX_RCVDET_EN_TMR 0x4122
> +#define TX_RCVDET_ST_TMR 0x4123
> +#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
> +#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
> +#define TX_DIAG_ACYA_0 0x41FF
> +#define TX_DIAG_ACYA_1 0x43FF
> +#define TX_DIAG_ACYA_2 0x45FF
> +#define TX_DIAG_ACYA_3 0x47FF
> +#define TX_ANA_CTRL_REG_1 0x5020
> +#define TX_ANA_CTRL_REG_2 0x5021
> +#define TX_DIG_CTRL_REG_1 0x5023
> +#define TX_DIG_CTRL_REG_2 0x5024
> +#define TXDA_CYA_AUXDA_CYA 0x5025
> +#define TX_ANA_CTRL_REG_3 0x5026
> +#define TX_ANA_CTRL_REG_4 0x5027
> +#define TX_ANA_CTRL_REG_5 0x5029
> +#define RX_PSC_A0 0x8000
> +#define RX_PSC_CAL 0x8006
> +#define PHY_HDP_MODE_CTRL 0xC008
> +#define PHY_HDP_CLK_CTL 0xC009
> +#define PHY_PMA_CMN_CTRL1 0xC800
Lower case hex values please
> +
> +#define REF_CLK_27MHZ 27000000
> +
> +enum dp_link_rate {
> + RATE_1_6 = 162000,
> + RATE_2_1 = 216000,
> + RATE_2_4 = 243000,
> + RATE_2_7 = 270000,
> + RATE_3_2 = 324000,
> + RATE_4_3 = 432000,
> + RATE_5_4 = 540000,
> + RATE_8_1 = 810000,
> +};
> +
> +#define MAX_LINK_RATE RATE_5_4
> +
> +struct phy_pll_reg {
> + u16 val[7];
> + u32 addr;
> +};
> +
> +static const struct phy_pll_reg phy_pll_27m_cfg[] = {
> + /* 1.62 2.16 2.43 2.7 3.24 4.32 5.4 register address */
> + {{ 0x010E, 0x010E, 0x010E, 0x010E, 0x010E, 0x010E, 0x010E }, CMN_PLL0_VCOCAL_INIT_TMR },
> + {{ 0x001B, 0x001B, 0x001B, 0x001B, 0x001B, 0x001B, 0x001B }, CMN_PLL0_VCOCAL_ITER_TMR },
> + {{ 0x30B9, 0x3087, 0x3096, 0x30B4, 0x30B9, 0x3087, 0x30B4 }, CMN_PLL0_VCOCAL_START },
> + {{ 0x0077, 0x009F, 0x00B3, 0x00C7, 0x0077, 0x009F, 0x00C7 }, CMN_PLL0_INTDIV },
> + {{ 0xF9DA, 0xF7CD, 0xF6C7, 0xF5C1, 0xF9DA, 0xF7CD, 0xF5C1 }, CMN_PLL0_FRACDIV },
> + {{ 0x001E, 0x0028, 0x002D, 0x0032, 0x001E, 0x0028, 0x0032 }, CMN_PLL0_HIGH_THR },
> + {{ 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020 }, CMN_PLL0_DSM_DIAG },
> + {{ 0x0000, 0x1000, 0x1000, 0x1000, 0x0000, 0x1000, 0x1000 }, CMN_PLLSM0_USER_DEF_CTRL },
> + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_OVRD },
> + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_FBH_OVRD },
> + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_FBL_OVRD },
> + {{ 0x0006, 0x0007, 0x0007, 0x0007, 0x0006, 0x0007, 0x0007 }, CMN_DIAG_PLL0_V2I_TUNE },
> + {{ 0x0043, 0x0043, 0x0043, 0x0042, 0x0043, 0x0043, 0x0042 }, CMN_DIAG_PLL0_CP_TUNE },
> + {{ 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008 }, CMN_DIAG_PLL0_LF_PROG },
> + {{ 0x0100, 0x0001, 0x0001, 0x0001, 0x0100, 0x0001, 0x0001 }, CMN_DIAG_PLL0_PTATIS_TUNE1 },
> + {{ 0x0007, 0x0001, 0x0001, 0x0001, 0x0007, 0x0001, 0x0001 }, CMN_DIAG_PLL0_PTATIS_TUNE2 },
> + {{ 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020 }, CMN_DIAG_PLL0_TEST_MODE},
> + {{ 0x0016, 0x0016, 0x0016, 0x0016, 0x0016, 0x0016, 0x0016 }, CMN_PSM_CLK_CTRL }
again, lower case please
> +};
> +
> +struct cdns_hdptx_dp_phy {
> + void __iomem *regs; /* DPTX registers base */
> + struct device *dev;
> + struct phy *phy;
> + struct mutex mbox_mutex; /* mutex to protect mailbox */
> + struct clk *ref_clk, *apb_clk;
> + u32 ref_clk_rate;
> + u32 num_lanes;
> + u32 link_rate;
> + bool power_up;
> +};
> +
> +static int cdns_phy_reg_write(struct cdns_hdptx_dp_phy *cdns_phy, u32 addr, u32 val)
> +{
> + return cdns_mhdp_reg_write(cdns_phy, ADDR_PHY_AFE + (addr << 2), val);
> +}
> +
> +static u32 cdns_phy_reg_read(struct cdns_hdptx_dp_phy *cdns_phy, u32 addr)
> +{
> + u32 reg32;
> +
> + cdns_mhdp_reg_read(cdns_phy, ADDR_PHY_AFE + (addr << 2), ®32);
> + return reg32;
> +}
> +
> +static int link_rate_index(u32 rate)
> +{
> + switch (rate) {
> + case RATE_1_6:
> + return 0;
> + case RATE_2_1:
> + return 1;
> + case RATE_2_4:
> + return 2;
> + case RATE_2_7:
> + return 3;
> + case RATE_3_2:
> + return 4;
> + case RATE_4_3:
> + return 5;
> + case RATE_5_4:
> + return 6;
> + default:
> + return -1;
> + }
> +}
> +
> +static int hdptx_dp_clk_enable(struct cdns_hdptx_dp_phy *cdns_phy)
> +{
> + struct device *dev = cdns_phy->dev;
> + u32 ref_clk_rate;
> + int ret;
> +
> + cdns_phy->ref_clk = devm_clk_get(dev, "ref");
> + if (IS_ERR(cdns_phy->ref_clk)) {
> + dev_err(dev, "phy ref clock not found\n");
> + return PTR_ERR(cdns_phy->ref_clk);
> + }
> +
> + cdns_phy->apb_clk = devm_clk_get(dev, "apb");
> + if (IS_ERR(cdns_phy->apb_clk)) {
> + dev_err(dev, "phy apb clock not found\n");
> + return PTR_ERR(cdns_phy->apb_clk);
> + }
> +
> + ret = clk_prepare_enable(cdns_phy->ref_clk);
> + if (ret) {
> + dev_err(cdns_phy->dev, "Failed to prepare ref clock\n");
> + return ret;
> + }
> +
> + ref_clk_rate = clk_get_rate(cdns_phy->ref_clk);
> + if (!ref_clk_rate) {
> + dev_err(cdns_phy->dev, "Failed to get ref clock rate\n");
> + goto err_ref_clk;
> + }
> +
> + if (ref_clk_rate == REF_CLK_27MHZ)
> + cdns_phy->ref_clk_rate = ref_clk_rate;
> + else {
> + dev_err(cdns_phy->dev, "Not support Ref Clock Rate(%dHz)\n", ref_clk_rate);
> + goto err_ref_clk;
> + }
> +
> + ret = clk_prepare_enable(cdns_phy->apb_clk);
> + if (ret) {
> + dev_err(cdns_phy->dev, "Failed to prepare apb clock\n");
> + goto err_ref_clk;
> + }
> +
> + return 0;
> +
> +err_ref_clk:
> + clk_disable_unprepare(cdns_phy->ref_clk);
> + return -EINVAL;
> +}
> +
> +static void hdptx_dp_clk_disable(struct cdns_hdptx_dp_phy *cdns_phy)
> +{
> + clk_disable_unprepare(cdns_phy->ref_clk);
> + clk_disable_unprepare(cdns_phy->apb_clk);
> +}
> +
> +static void hdptx_dp_aux_cfg(struct cdns_hdptx_dp_phy *cdns_phy)
> +{
> + /* Power up Aux */
> + cdns_phy_reg_write(cdns_phy, TXDA_CYA_AUXDA_CYA, 1);
> +
> + cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_1, 0x3);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_2, 36);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0100);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0300);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_3, 0x0000);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2008);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2018);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA018);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030C);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_5, 0x0000);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_4, 0x1001);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA098);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA198);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030d);
> + ndelay(150);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030f);
> +}
> +
> +/* PMA common configuration for 27MHz */
> +static void hdptx_dp_phy_pma_cmn_cfg_27mhz(struct cdns_hdptx_dp_phy *cdns_phy)
> +{
> + u32 num_lanes = cdns_phy->num_lanes;
> + u16 val;
> + int k;
> +
> + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> + val &= 0xFFF7;
> + val |= 0x0008;
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> +
> + /* Startup state machine registers */
> + cdns_phy_reg_write(cdns_phy, CMN_SSM_BIAS_TMR, 0x0087);
> + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLEN_TMR, 0x001B);
> + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLPRE_TMR, 0x0036);
> + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLVREF_TMR, 0x001B);
> + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLLOCK_TMR, 0x006C);
> +
> + /* Current calibration registers */
> + cdns_phy_reg_write(cdns_phy, CMN_ICAL_INIT_TMR, 0x0044);
> + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ITER_TMR, 0x0006);
> + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ADJ_INIT_TMR, 0x0022);
> + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ADJ_ITER_TMR, 0x0006);
> +
> + /* Resistor calibration registers */
> + cdns_phy_reg_write(cdns_phy, CMN_TXPUCAL_INIT_TMR, 0x0022);
> + cdns_phy_reg_write(cdns_phy, CMN_TXPUCAL_ITER_TMR, 0x0006);
> + cdns_phy_reg_write(cdns_phy, CMN_TXPU_ADJ_INIT_TMR, 0x0022);
> + cdns_phy_reg_write(cdns_phy, CMN_TXPU_ADJ_ITER_TMR, 0x0006);
> + cdns_phy_reg_write(cdns_phy, CMN_TXPDCAL_INIT_TMR, 0x0022);
> + cdns_phy_reg_write(cdns_phy, CMN_TXPDCAL_ITER_TMR, 0x0006);
> + cdns_phy_reg_write(cdns_phy, CMN_TXPD_ADJ_INIT_TMR, 0x0022);
> + cdns_phy_reg_write(cdns_phy, CMN_TXPD_ADJ_ITER_TMR, 0x0006);
> + cdns_phy_reg_write(cdns_phy, CMN_RXCAL_INIT_TMR, 0x0022);
> + cdns_phy_reg_write(cdns_phy, CMN_RXCAL_ITER_TMR, 0x0006);
> + cdns_phy_reg_write(cdns_phy, CMN_RX_ADJ_INIT_TMR, 0x0022);
> + cdns_phy_reg_write(cdns_phy, CMN_RX_ADJ_ITER_TMR, 0x0006);
> +
> + for (k = 0; k < num_lanes; k = k + 1) {
> + /* Power state machine registers */
> + cdns_phy_reg_write(cdns_phy, XCVR_PSM_CAL_TMR | (k << 9), 0x016D);
> + cdns_phy_reg_write(cdns_phy, XCVR_PSM_A0IN_TMR | (k << 9), 0x016D);
> + /* Transceiver control and diagnostic registers */
> + cdns_phy_reg_write(cdns_phy, XCVR_DIAG_LANE_FCM_EN_MGN_TMR | (k << 9), 0x00A2);
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_BGREF_PREDRV_DELAY | (k << 9), 0x0097);
> + /* Transmitter receiver detect registers */
> + cdns_phy_reg_write(cdns_phy, TX_RCVDET_EN_TMR | (k << 9), 0x0A8C);
> + cdns_phy_reg_write(cdns_phy, TX_RCVDET_ST_TMR | (k << 9), 0x0036);
> + }
> +
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_0, 1);
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_1, 1);
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_2, 1);
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_3, 1);
> +}
> +
> +static void hdptx_dp_phy_pma_cmn_pll0_27mhz(struct cdns_hdptx_dp_phy *cdns_phy)
> +{
> + u32 num_lanes = cdns_phy->num_lanes;
> + u32 link_rate = cdns_phy->link_rate;
> + u16 val;
> + int index, i, k;
> +
> + /* DP PLL data rate 0/1 clock divider value */
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + val &= 0x00FF;
> + if (link_rate <= RATE_2_7)
> + val |= 0x2400;
> + else
> + val |= 0x1200;
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> +
> + /* High speed clock 0/1 div */
> + val = cdns_phy_reg_read(cdns_phy, CMN_DIAG_HSCLK_SEL);
> + val &= 0xFFCC;
> + if (link_rate <= RATE_2_7)
> + val |= 0x0011;
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_HSCLK_SEL, val);
> +
> + for (k = 0; k < num_lanes; k++) {
> + val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)));
> + val = val & 0xCFFF;
> + if (link_rate <= RATE_2_7)
> + val |= 0x1000;
> + cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)), val);
> + }
> +
> + /* DP PHY PLL 27MHz configuration */
> + index = link_rate_index(link_rate);
> + for (i = 0; i < ARRAY_SIZE(phy_pll_27m_cfg); i++)
> + cdns_phy_reg_write(cdns_phy, phy_pll_27m_cfg[i].addr,
> + phy_pll_27m_cfg[i].val[index]);
> +
> + /* Transceiver control and diagnostic registers */
> + for (k = 0; k < num_lanes; k++) {
> + val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)));
> + val = val & 0x8FFF;
> + if (link_rate <= RATE_2_7)
> + val |= 0x2000;
> + else
> + val |= 0x1000;
> + cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val);
> + }
> +
> + for (k = 0; k < num_lanes; k = k + 1) {
> + /* Power state machine registers */
> + cdns_phy_reg_write(cdns_phy, (XCVR_PSM_RCTRL | (k << 9)), 0xBEFC);
> + cdns_phy_reg_write(cdns_phy, (TX_PSC_A0 | (k << 9)), 0x6799);
> + cdns_phy_reg_write(cdns_phy, (TX_PSC_A1 | (k << 9)), 0x6798);
> + cdns_phy_reg_write(cdns_phy, (TX_PSC_A2 | (k << 9)), 0x0098);
> + cdns_phy_reg_write(cdns_phy, (TX_PSC_A3 | (k << 9)), 0x0098);
> + /* Receiver calibration power state definition register */
> + val = cdns_phy_reg_read(cdns_phy, RX_PSC_CAL | (k << 9));
> + val &= 0xFFBB;
> + cdns_phy_reg_write(cdns_phy, (RX_PSC_CAL | (k << 9)), val);
> + val = cdns_phy_reg_read(cdns_phy, RX_PSC_A0 | (k << 9));
> + val &= 0xFFBB;
> + cdns_phy_reg_write(cdns_phy, (RX_PSC_A0 | (k << 9)), val);
> + }
> +}
> +
> +static void hdptx_dp_phy_ref_clock_type(struct cdns_hdptx_dp_phy *cdns_phy)
> +{
> + u32 val;
> +
> + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> + val &= 0xFF8F;
> + /*
> + * single ended reference clock (val |= 0x0030);
> + * differential clock (val |= 0x0000);
> + *
> + * for differential clock on the refclk_p and
> + * refclk_m off chip pins: CMN_DIAG_ACYA[8]=1'b1
> + * cdns_phy_reg_write(cdns_phy, CMN_DIAG_ACYA, 0x0100);
> + */
> + val |= 0x0030;
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> +}
> +
> +static int hdptx_dp_phy_power_up(struct cdns_hdptx_dp_phy *cdns_phy)
> +{
> + u32 val, i;
> +
> + /* Enable HDP PLL’s for high speed clocks */
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + val |= (1 << 0);
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> + /* Wait for PLL ready ACK */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + if (val & (1 << 1))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait PLL Ack failed\n");
> + return -1;
> + }
> +
> + /* Enable HDP PLL’s data rate and full rate clocks out of PMA. */
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + val |= (1 << 2);
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> + /* Wait for PLL clock enable ACK */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + if (val & (1 << 3))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait PLL clock enable ACk failed\n");
> + return -1;
> + }
> +
> + /* Configure PHY in A2 Mode */
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0004);
> + /* Wait for Power State A2 Ack */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
> + if (val & (1 << 6))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait A2 Ack failed\n");
> + return -1;
> + }
> +
> + /* Configure PHY in A0 mode (PHY must be in the A0 power
> + * state in order to transmit data)
> + */
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0101);
> +
> + /* Wait for Power State A0 Ack */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
> + if (val & (1 << 4))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait A0 Ack failed\n");
> + return -1;
> + }
> +
> + cdns_phy->power_up = true;
> +
> + return 0;
> +}
> +
> +static void hdptx_dp_phy_power_down(struct cdns_hdptx_dp_phy *cdns_phy)
> +{
> + u16 val;
> + int i;
> +
> + if (!cdns_phy->power_up)
> + return;
> +
> + /* Place the PHY lanes in the A3 power state. */
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x8);
> + /* Wait for Power State A3 Ack */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
> + if (val & (1 << 7))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait A3 Ack failed\n");
> + return;
> + }
> +
> + /* Disable HDP PLL’s data rate and full rate clocks out of PMA. */
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + val &= ~(1 << 2);
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> + /* Wait for PLL clock gate ACK */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + if (!(val & (1 << 3)))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait PLL clock gate Ack failed\n");
> + return;
> + }
> +
> + /* Disable HDP PLL’s for high speed clocks */
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + val &= ~(1 << 0);
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> + /* Wait for PLL disable ACK */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + if (!(val & (1 << 1)))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait PLL disable Ack failed\n");
> + return;
> + }
> +}
> +
> +static int cdns_hdptx_dp_phy_on(struct phy *phy)
> +{
> + struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
> +
> + return hdptx_dp_phy_power_up(cdns_phy);
> +}
> +
> +static int cdns_hdptx_dp_phy_off(struct phy *phy)
> +{
> + struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
> +
> + hdptx_dp_phy_power_down(cdns_phy);
> +
> + return 0;
> +}
> +
> +static int cdns_hdptx_dp_phy_init(struct phy *phy)
> +{
> + struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
> + int ret;
> +
> + hdptx_dp_phy_ref_clock_type(cdns_phy);
> +
> + /* PHY power up */
> + ret = hdptx_dp_phy_power_up(cdns_phy);
> + if (ret < 0)
> + return ret;
> +
> + hdptx_dp_aux_cfg(cdns_phy);
> +
> + return ret;
> +}
> +
> +static int cdns_hdptx_dp_configure(struct phy *phy,
> + union phy_configure_opts *opts)
> +{
> + struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
> + int ret;
> +
> + cdns_phy->link_rate = opts->dp.link_rate;
> + cdns_phy->num_lanes = opts->dp.lanes;
> +
> + if (cdns_phy->link_rate > MAX_LINK_RATE) {
> + dev_err(cdns_phy->dev, "Link Rate(%d) Not supported\n", cdns_phy->link_rate);
> + return false;
> + }
> +
> + /* Disable phy clock if PHY in power up state */
> + hdptx_dp_phy_power_down(cdns_phy);
> +
> + if (cdns_phy->ref_clk_rate == REF_CLK_27MHZ) {
> + hdptx_dp_phy_pma_cmn_cfg_27mhz(cdns_phy);
> + hdptx_dp_phy_pma_cmn_pll0_27mhz(cdns_phy);
> + } else
> + dev_err(cdns_phy->dev, "Not support ref clock rate\n");
> +
> + /* PHY power up */
> + ret = hdptx_dp_phy_power_up(cdns_phy);
> +
> + return ret;
> +}
> +
> +static const struct phy_ops cdns_hdptx_dp_phy_ops = {
> + .init = cdns_hdptx_dp_phy_init,
> + .configure = cdns_hdptx_dp_configure,
> + .power_on = cdns_hdptx_dp_phy_on,
> + .power_off = cdns_hdptx_dp_phy_off,
> + .owner = THIS_MODULE,
> +};
> +
> +static int cdns_hdptx_dp_phy_probe(struct platform_device *pdev)
> +{
> + struct cdns_hdptx_dp_phy *cdns_phy;
> + struct device *dev = &pdev->dev;
> + struct device_node *node = dev->of_node;
> + struct phy_provider *phy_provider;
> + struct resource *res;
> + struct phy *phy;
> + int ret;
> +
> + cdns_phy = devm_kzalloc(dev, sizeof(*cdns_phy), GFP_KERNEL);
> + if (!cdns_phy)
> + return -ENOMEM;
> +
> + dev_set_drvdata(dev, cdns_phy);
> + cdns_phy->dev = dev;
> + mutex_init(&cdns_phy->mbox_mutex);
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!res)
> + return -ENODEV;
> + cdns_phy->regs = devm_ioremap(dev, res->start, resource_size(res));
> + if (IS_ERR(cdns_phy->regs))
> + return PTR_ERR(cdns_phy->regs);
> +
> + phy = devm_phy_create(dev, node, &cdns_hdptx_dp_phy_ops);
> + if (IS_ERR(phy))
> + return PTR_ERR(phy);
> +
> + phy->attrs.mode = PHY_MODE_DP;
> + cdns_phy->phy = phy;
> + phy_set_drvdata(phy, cdns_phy);
> +
> + ret = hdptx_dp_clk_enable(cdns_phy);
> + if (ret) {
> + dev_err(dev, "Init clk fail\n");
> + return -EINVAL;
> + }
> +
> + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> + if (IS_ERR(phy_provider)) {
> + ret = PTR_ERR(phy_provider);
> + goto clk_disable;
> + }
> +
> + return 0;
> +
> +clk_disable:
> + hdptx_dp_clk_disable(cdns_phy);
> +
> + return -EINVAL;
> +}
> +
> +static int cdns_hdptx_dp_phy_remove(struct platform_device *pdev)
> +{
> + struct cdns_hdptx_dp_phy *cdns_phy = platform_get_drvdata(pdev);
> +
> + hdptx_dp_clk_disable(cdns_phy);
> +
> + return 0;
> +}
> +
> +static const struct of_device_id cdns_hdptx_dp_phy_of_match[] = {
> + {.compatible = "fsl,imx8mq-dp-phy" },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, cdns_hdptx_dp_phy_of_match);
> +
> +static struct platform_driver cdns_hdptx_dp_phy_driver = {
> + .probe = cdns_hdptx_dp_phy_probe,
> + .remove = cdns_hdptx_dp_phy_remove,
> + .driver = {
> + .name = "cdns-hdptx-dp-phy",
> + .of_match_table = cdns_hdptx_dp_phy_of_match,
> + }
> +};
> +module_platform_driver(cdns_hdptx_dp_phy_driver);
> +
> +MODULE_AUTHOR("Sandor Yu <[email protected]>");
> +MODULE_DESCRIPTION("Cadence HDP-TX DisplayPort PHY driver");
> +MODULE_LICENSE("GPL");
> --
> 2.34.1
--
~Vinod
On 15-06-23, 09:38, Sandor Yu wrote:
> Add Cadence HDP-TX HDMI PHY driver for i.MX8MQ.
>
> Cadence HDP-TX PHY could be put in either DP mode or
> HDMI mode base on the configuration chosen.
> HDMI PHY mode is configurated in the driver.
>
> Signed-off-by: Sandor Yu <[email protected]>
> ---
> drivers/phy/freescale/Kconfig | 9 +
> drivers/phy/freescale/Makefile | 1 +
> drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c | 889 ++++++++++++++++++++
> 3 files changed, 899 insertions(+)
> create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
>
> diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig
> index a99ee370eda6..e007e15e503a 100644
> --- a/drivers/phy/freescale/Kconfig
> +++ b/drivers/phy/freescale/Kconfig
> @@ -44,6 +44,15 @@ config PHY_CADENCE_DP_PHY
> Enable this to support the Cadence HDPTX DP PHY driver
> on NXP's i.MX8MQ SOC.
>
> +config PHY_CADENCE_HDMI_PHY
> + tristate "Cadence HDPTX HDMI PHY Driver"
> + depends on OF && HAS_IOMEM
> + depends on COMMON_CLK
> + select GENERIC_PHY
> + help
> + Enable this to support the Cadence HDPTX HDMI PHY driver.
> + on NXP's i.MX8MQ SOC.
> +
> endif
>
> config PHY_FSL_LYNX_28G
> diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile
> index c3bdf3fa2e72..d25fafd91c53 100644
> --- a/drivers/phy/freescale/Makefile
> +++ b/drivers/phy/freescale/Makefile
> @@ -5,3 +5,4 @@ obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o
> obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o
> obj-$(CONFIG_PHY_FSL_LYNX_28G) += phy-fsl-lynx-28g.o
> obj-$(CONFIG_PHY_CADENCE_DP_PHY) += phy-fsl-imx8mq-dp.o
> +obj-$(CONFIG_PHY_CADENCE_HDMI_PHY) += phy-fsl-imx8mq-hdmi.o
Pls sort alphabetically (both Kconfig and Makefile)
> diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c b/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
> new file mode 100644
> index 000000000000..65aeb9835bb9
> --- /dev/null
> +++ b/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
> @@ -0,0 +1,889 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Cadence High-Definition Multimedia Interface (HDMI) PHY driver
> + *
> + * Copyright (C) 2022 NXP Semiconductor, Inc.
> + */
> +#include <asm/unaligned.h>
> +#include <linux/clk.h>
> +#include <linux/kernel.h>
> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/io.h>
> +
> +#include <drm/bridge/cdns-mhdp-mailbox.h>
> +
> +#define ADDR_PHY_AFE 0x80000
> +/* PHY registers */
> +#define CMN_SSM_BIAS_TMR 0x0022
> +#define CMN_PLLSM0_USER_DEF_CTRL 0x002F
> +#define CMN_PSM_CLK_CTRL 0x0061
> +#define CMN_CDIAG_REFCLK_CTRL 0x0062
> +#define CMN_PLL0_VCOCAL_START 0x0081
> +#define CMN_PLL0_VCOCAL_INIT_TMR 0x0084
> +#define CMN_PLL0_VCOCAL_ITER_TMR 0x0085
> +#define CMN_TXPUCAL_CTRL 0x00E0
> +#define CMN_TXPDCAL_CTRL 0x00F0
> +#define CMN_TXPU_ADJ_CTRL 0x0108
> +#define CMN_TXPD_ADJ_CTRL 0x010c
> +#define CMN_DIAG_PLL0_FBH_OVRD 0x01C0
> +#define CMN_DIAG_PLL0_FBL_OVRD 0x01C1
> +#define CMN_DIAG_PLL0_OVRD 0x01C2
> +#define CMN_DIAG_PLL0_TEST_MODE 0x01C4
> +#define CMN_DIAG_PLL0_V2I_TUNE 0x01C5
> +#define CMN_DIAG_PLL0_CP_TUNE 0x01C6
> +#define CMN_DIAG_PLL0_LF_PROG 0x01C7
> +#define CMN_DIAG_PLL0_PTATIS_TUNE1 0x01C8
> +#define CMN_DIAG_PLL0_PTATIS_TUNE2 0x01C9
> +#define CMN_DIAG_PLL0_INCLK_CTRL 0x01CA
> +#define CMN_DIAG_PLL0_PXL_DIVH 0x01CB
> +#define CMN_DIAG_PLL0_PXL_DIVL 0x01CC
> +#define CMN_DIAG_HSCLK_SEL 0x01E0
> +#define XCVR_PSM_RCTRL 0x4001
> +#define TX_TXCC_CAL_SCLR_MULT_0 0x4047
> +#define TX_TXCC_CPOST_MULT_00_0 0x404C
> +#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
> +#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
> +#define XCVR_DIAG_HSCLK_SEL 0x40E1
> +#define XCVR_DIAG_BIDI_CTRL 0x40E8
> +#define TX_PSC_A0 0x4100
> +#define TX_PSC_A1 0x4101
> +#define TX_PSC_A2 0x4102
> +#define TX_PSC_A3 0x4103
> +#define TX_DIAG_TX_CTRL 0x41E0
> +#define TX_DIAG_TX_DRV 0x41E1
> +#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
> +#define TX_DIAG_ACYA_0 0x41FF
> +#define TX_DIAG_ACYA_1 0x43FF
> +#define TX_DIAG_ACYA_2 0x45FF
> +#define TX_DIAG_ACYA_3 0x47FF
> +#define TX_ANA_CTRL_REG_1 0x5020
> +#define TX_ANA_CTRL_REG_2 0x5021
> +#define TX_DIG_CTRL_REG_2 0x5024
> +#define TXDA_CYA_AUXDA_CYA 0x5025
> +#define TX_ANA_CTRL_REG_3 0x5026
> +#define TX_ANA_CTRL_REG_4 0x5027
> +#define TX_ANA_CTRL_REG_5 0x5029
> +#define RX_PSC_A0 0x8000
> +#define RX_PSC_CAL 0x8006
> +#define PHY_HDP_MODE_CTRL 0xC008
> +#define PHY_HDP_CLK_CTL 0xC009
> +#define PHY_ISO_CMN_CTRL 0xC010
> +#define PHY_PMA_CMN_CTRL1 0xC800
> +#define PHY_PMA_ISO_CMN_CTRL 0xC810
> +#define PHY_PMA_ISO_PLL_CTRL1 0xC812
> +#define PHY_PMA_ISOLATION_CTRL 0xC81F
> +
> +#define REF_CLK_27MHZ 27000000
This looks similar to patch 7, how different are these two..?
> +
> +/* HDMI TX clock control settings */
> +struct hdptx_hdmi_ctrl {
> + u32 pixel_clk_freq_min;
> + u32 pixel_clk_freq_max;
> + u32 feedback_factor;
> + u32 data_range_kbps_min;
> + u32 data_range_kbps_max;
> + u32 cmnda_pll0_ip_div;
> + u32 cmn_ref_clk_dig_div;
> + u32 ref_clk_divider_scaler;
> + u32 pll_fb_div_total;
> + u32 cmnda_pll0_fb_div_low;
> + u32 cmnda_pll0_fb_div_high;
> + u32 pixel_div_total;
> + u32 cmnda_pll0_pxdiv_low;
> + u32 cmnda_pll0_pxdiv_high;
> + u32 vco_freq_min;
> + u32 vco_freq_max;
> + u32 vco_ring_select;
> + u32 cmnda_hs_clk_0_sel;
> + u32 cmnda_hs_clk_1_sel;
> + u32 hsclk_div_at_xcvr;
> + u32 hsclk_div_tx_sub_rate;
> + u32 cmnda_pll0_hs_sym_div_sel;
> + u32 cmnda_pll0_clk_freq_min;
> + u32 cmnda_pll0_clk_freq_max;
> +};
> +
> +struct cdns_hdptx_hdmi_phy {
> + void __iomem *regs; /* DPTX registers base */
> + struct mutex mbox_mutex; /* mutex to protect mailbox */
> + struct device *dev;
> + struct phy *phy;
> + struct clk *ref_clk, *apb_clk;
> + u32 ref_clk_rate;
> + u32 pixel_clk_rate;
> + enum hdmi_phy_colorspace color_space;
> + u32 bpc;
> +};
> +
> +/* HDMI TX clock control settings, pixel clock is output */
> +static const struct hdptx_hdmi_ctrl pixel_clk_output_ctrl_table[] = {
> +/*Minclk Maxclk Fdbak DR_min DR_max ip_d dig DS Totl */
> +{ 27000, 27000, 1000, 270000, 270000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x3, 27000, 27000},
> +{ 27000, 27000, 1250, 337500, 337500, 0x03, 0x1, 0x1, 300, 0x0EC, 0x03C, 100, 0x030, 0x030, 2700000, 2700000, 0, 2, 2, 2, 4, 0x3, 33750, 33750},
> +{ 27000, 27000, 1500, 405000, 405000, 0x03, 0x1, 0x1, 360, 0x11C, 0x048, 120, 0x03A, 0x03A, 3240000, 3240000, 0, 2, 2, 2, 4, 0x3, 40500, 40500},
> +{ 27000, 27000, 2000, 540000, 540000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x2, 54000, 54000},
> +{ 54000, 54000, 1000, 540000, 540000, 0x03, 0x1, 0x1, 480, 0x17C, 0x060, 80, 0x026, 0x026, 4320000, 4320000, 1, 2, 2, 2, 4, 0x3, 54000, 54000},
> +{ 54000, 54000, 1250, 675000, 675000, 0x04, 0x1, 0x1, 400, 0x13C, 0x050, 50, 0x017, 0x017, 2700000, 2700000, 0, 1, 1, 2, 4, 0x2, 67500, 67500},
> +{ 54000, 54000, 1500, 810000, 810000, 0x04, 0x1, 0x1, 480, 0x17C, 0x060, 60, 0x01C, 0x01C, 3240000, 3240000, 0, 2, 2, 2, 2, 0x2, 81000, 81000},
> +{ 54000, 54000, 2000, 1080000, 1080000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 40, 0x012, 0x012, 2160000, 2160000, 0, 2, 2, 2, 1, 0x1, 108000, 108000},
> +{ 74250, 74250, 1000, 742500, 742500, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 80, 0x026, 0x026, 5940000, 5940000, 1, 2, 2, 2, 4, 0x3, 74250, 74250},
> +{ 74250, 74250, 1250, 928125, 928125, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 50, 0x017, 0x017, 3712500, 3712500, 1, 1, 1, 2, 4, 0x2, 92812, 92812},
> +{ 74250, 74250, 1500, 1113750, 1113750, 0x04, 0x1, 0x1, 660, 0x20C, 0x084, 60, 0x01C, 0x01C, 4455000, 4455000, 1, 2, 2, 2, 2, 0x2, 111375, 111375},
> +{ 74250, 74250, 2000, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 40, 0x012, 0x012, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1, 148500, 148500},
> +{ 99000, 99000, 1000, 990000, 990000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2, 2, 2, 2, 0x2, 99000, 99000},
> +{ 99000, 99000, 1250, 1237500, 1237500, 0x03, 0x1, 0x1, 275, 0x0D8, 0x037, 25, 0x00B, 0x00A, 2475000, 2475000, 0, 1, 1, 2, 2, 0x1, 123750, 123750},
> +{ 99000, 99000, 1500, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 30, 0x00D, 0x00D, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1, 148500, 148500},
> +{ 99000, 99000, 2000, 1980000, 1980000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2, 2, 2, 1, 0x1, 198000, 198000},
> +{148500, 148500, 1000, 1485000, 1485000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 40, 0x012, 0x012, 5940000, 5940000, 1, 2, 2, 2, 2, 0x2, 148500, 148500},
> +{148500, 148500, 1250, 1856250, 1856250, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 25, 0x00B, 0x00A, 3712500, 3712500, 1, 1, 1, 2, 2, 0x1, 185625, 185625},
> +{148500, 148500, 1500, 2227500, 2227500, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 30, 0x00D, 0x00D, 4455000, 4455000, 1, 1, 1, 2, 2, 0x1, 222750, 222750},
> +{148500, 148500, 2000, 2970000, 2970000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 40, 0x012, 0x012, 5940000, 5940000, 1, 2, 2, 2, 1, 0x1, 297000, 297000},
> +{198000, 198000, 1000, 1980000, 1980000, 0x03, 0x1, 0x1, 220, 0x0AC, 0x02C, 10, 0x003, 0x003, 1980000, 1980000, 0, 1, 1, 2, 1, 0x0, 198000, 198000},
> +{198000, 198000, 1250, 2475000, 2475000, 0x03, 0x1, 0x1, 550, 0x1B4, 0x06E, 25, 0x00B, 0x00A, 4950000, 4950000, 1, 1, 1, 2, 2, 0x1, 247500, 247500},
> +{198000, 198000, 1500, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 15, 0x006, 0x005, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000, 297000},
> +{198000, 198000, 2000, 3960000, 3960000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 20, 0x008, 0x008, 3960000, 3960000, 1, 1, 1, 2, 1, 0x0, 396000, 396000},
> +{297000, 297000, 1000, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 10, 0x003, 0x003, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000, 297000},
> +{297000, 297000, 1500, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 15, 0x006, 0x005, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0, 445500, 445500},
> +{297000, 297000, 2000, 5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 20, 0x008, 0x008, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
> +{594000, 594000, 1000, 5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 10, 0x003, 0x003, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
> +{594000, 594000, 750, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 10, 0x003, 0x003, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0, 445500, 445500},
> +{594000, 594000, 625, 3712500, 3712500, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 10, 0x003, 0x003, 3712500, 3712500, 1, 1, 1, 2, 1, 0x0, 371250, 371250},
> +{594000, 594000, 500, 2970000, 2970000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 10, 0x003, 0x003, 5940000, 5940000, 1, 1, 1, 2, 2, 0x1, 297000, 297000},
> +};
> +
> +/* HDMI TX PLL tuning settings */
> +struct hdptx_hdmi_pll_tuning {
> + u32 vco_freq_bin;
> + u32 vco_freq_min;
> + u32 vco_freq_max;
> + u32 volt_to_current_coarse;
> + u32 volt_to_current;
> + u32 ndac_ctrl;
> + u32 pmos_ctrl;
> + u32 ptat_ndac_ctrl;
> + u32 feedback_div_total;
> + u32 charge_pump_gain;
> + u32 coarse_code;
> + u32 v2i_code;
> + u32 vco_cal_code;
> +};
> +
> +/* HDMI TX PLL tuning settings, pixel clock is output */
> +static const struct hdptx_hdmi_pll_tuning pixel_clk_output_pll_table[] = {
> +/*bin VCO_freq min/max coar cod NDAC PMOS PTAT div-T P-Gain Coa V2I CAL */
> +{ 1, 1980000, 1980000, 0x4, 0x3, 0x0, 0x09, 0x09, 220, 0x42, 160, 5, 183 },
> +{ 2, 2160000, 2160000, 0x4, 0x3, 0x0, 0x09, 0x09, 240, 0x42, 166, 6, 208 },
> +{ 3, 2475000, 2475000, 0x5, 0x3, 0x1, 0x00, 0x07, 275, 0x42, 167, 6, 209 },
> +{ 4, 2700000, 2700000, 0x5, 0x3, 0x1, 0x00, 0x07, 300, 0x42, 188, 6, 230 },
> +{ 4, 2700000, 2700000, 0x5, 0x3, 0x1, 0x00, 0x07, 400, 0x4C, 188, 6, 230 },
> +{ 5, 2970000, 2970000, 0x6, 0x3, 0x1, 0x00, 0x07, 330, 0x42, 183, 6, 225 },
> +{ 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 360, 0x42, 203, 7, 256 },
> +{ 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 480, 0x4C, 203, 7, 256 },
> +{ 7, 3712500, 3712500, 0x4, 0x3, 0x0, 0x07, 0x0F, 550, 0x4C, 212, 7, 257 },
> +{ 8, 3960000, 3960000, 0x5, 0x3, 0x0, 0x07, 0x0F, 440, 0x42, 184, 6, 226 },
> +{ 9, 4320000, 4320000, 0x5, 0x3, 0x1, 0x07, 0x0F, 480, 0x42, 205, 7, 258 },
> +{ 10, 4455000, 4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 495, 0x42, 219, 7, 272 },
> +{ 10, 4455000, 4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 660, 0x4C, 219, 7, 272 },
> +{ 11, 4950000, 4950000, 0x6, 0x3, 0x1, 0x00, 0x07, 550, 0x42, 213, 7, 258 },
> +{ 12, 5940000, 5940000, 0x7, 0x3, 0x1, 0x00, 0x07, 660, 0x42, 244, 8, 292 },
> +};
> +
> +static int cdns_phy_reg_write(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 addr, u32 val)
> +{
> + return cdns_mhdp_reg_write(cdns_phy, ADDR_PHY_AFE + (addr << 2), val);
> +}
> +
> +static u32 cdns_phy_reg_read(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 addr)
> +{
> + u32 reg32;
> +
> + cdns_mhdp_reg_read(cdns_phy, ADDR_PHY_AFE + (addr << 2), ®32);
> +
> + return reg32;
> +}
> +
> +#define KEEP_ALIVE 0x18
> +static bool hdptx_phy_check_alive(struct cdns_hdptx_hdmi_phy *cdns_phy)
> +{
> + u32 alive, newalive;
> + u8 retries_left = 50;
> +
> + alive = readl(cdns_phy->regs + KEEP_ALIVE);
> +
> + while (retries_left--) {
> + udelay(2);
> +
> + newalive = readl(cdns_phy->regs + KEEP_ALIVE);
> + if (alive == newalive)
> + continue;
> + return true;
> + }
> + return false;
> +}
> +
> +static int hdptx_hdmi_clk_enable(struct cdns_hdptx_hdmi_phy *cdns_phy)
> +{
> + struct device *dev = cdns_phy->dev;
> + u32 ref_clk_rate;
> + int ret;
> +
> + cdns_phy->ref_clk = devm_clk_get(dev, "ref");
> + if (IS_ERR(cdns_phy->ref_clk)) {
> + dev_err(dev, "phy ref clock not found\n");
> + return PTR_ERR(cdns_phy->ref_clk);
> + }
> +
> + cdns_phy->apb_clk = devm_clk_get(dev, "apb");
> + if (IS_ERR(cdns_phy->apb_clk)) {
> + dev_err(dev, "phy apb clock not found\n");
> + return PTR_ERR(cdns_phy->apb_clk);
not _put for ref_clk?
> + }
> +
> + ret = clk_prepare_enable(cdns_phy->ref_clk);
> + if (ret) {
> + dev_err(cdns_phy->dev, "Failed to prepare ref clock\n");
> + return ret;
what happens to clk refs you have already taken?
> + }
> +
> + ref_clk_rate = clk_get_rate(cdns_phy->ref_clk);
> + if (!ref_clk_rate) {
> + dev_err(cdns_phy->dev, "Failed to get ref clock rate\n");
> + goto err_ref_clk;
> + }
> +
> + if (ref_clk_rate == REF_CLK_27MHZ)
> + cdns_phy->ref_clk_rate = ref_clk_rate;
> + else {
> + dev_err(cdns_phy->dev, "Not support Ref Clock Rate(%dHz)\n", ref_clk_rate);
> + goto err_ref_clk;
> + }
> +
> + ret = clk_prepare_enable(cdns_phy->apb_clk);
> + if (ret) {
> + dev_err(cdns_phy->dev, "Failed to prepare apb clock\n");
> + goto err_ref_clk;
> + }
> +
> + return 0;
> +
> +err_ref_clk:
> + clk_disable_unprepare(cdns_phy->ref_clk);
> + return -EINVAL;
> +}
> +
> +static void hdptx_hdmi_clk_disable(struct cdns_hdptx_hdmi_phy *cdns_phy)
> +{
> + clk_disable_unprepare(cdns_phy->ref_clk);
> + clk_disable_unprepare(cdns_phy->apb_clk);
> +}
> +
> +static void hdptx_hdmi_arc_config(struct cdns_hdptx_hdmi_phy *cdns_phy)
> +{
> + u16 txpu_calib_code;
> + u16 txpd_calib_code;
> + u16 txpu_adj_calib_code;
> + u16 txpd_adj_calib_code;
> + u16 prev_calib_code;
> + u16 new_calib_code;
> + u16 rdata;
> +
> + /* Power ARC */
> + cdns_phy_reg_write(cdns_phy, TXDA_CYA_AUXDA_CYA, 0x0001);
> +
> + prev_calib_code = cdns_phy_reg_read(cdns_phy, TX_DIG_CTRL_REG_2);
> + txpu_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPUCAL_CTRL);
> + txpd_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPDCAL_CTRL);
> + txpu_adj_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPU_ADJ_CTRL);
> + txpd_adj_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPD_ADJ_CTRL);
> +
> + new_calib_code = ((txpu_calib_code + txpd_calib_code) / 2)
> + + txpu_adj_calib_code + txpd_adj_calib_code;
> +
> + if (new_calib_code != prev_calib_code) {
> + rdata = cdns_phy_reg_read(cdns_phy, TX_ANA_CTRL_REG_1);
> + rdata &= 0xDFFF;
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, rdata);
> + cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_2, new_calib_code);
> + mdelay(10);
> + rdata |= 0x2000;
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, rdata);
> + udelay(150);
> + }
> +
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0100);
> + udelay(100);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0300);
> + udelay(100);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_3, 0x0000);
> + udelay(100);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2008);
> + udelay(100);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2018);
> + udelay(100);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2098);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030C);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_5, 0x0010);
> + udelay(100);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_4, 0x4001);
> + mdelay(5);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2198);
> + mdelay(5);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030D);
> + udelay(100);
> + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030F);
> +}
> +
> +static void hdptx_hdmi_phy_set_vswing(struct cdns_hdptx_hdmi_phy *cdns_phy)
> +{
> + u32 k;
> + const u32 num_lanes = 4;
> +
> + for (k = 0; k < num_lanes; k++) {
> + cdns_phy_reg_write(cdns_phy, (TX_DIAG_TX_DRV | (k << 9)), 0x7c0);
> + cdns_phy_reg_write(cdns_phy, (TX_TXCC_CPOST_MULT_00_0 | (k << 9)), 0x0);
> + cdns_phy_reg_write(cdns_phy, (TX_TXCC_CAL_SCLR_MULT_0 | (k << 9)), 0x120);
magic numbers?
> + }
> +}
> +
> +static int hdptx_hdmi_feedback_factor(struct cdns_hdptx_hdmi_phy *cdns_phy)
> +{
> + u32 feedback_factor;
> +
> + switch (cdns_phy->color_space) {
> + case HDMI_PHY_COLORSPACE_YUV422:
> + feedback_factor = 1000;
> + break;
empty line after each case please
> + case HDMI_PHY_COLORSPACE_YUV420:
> + switch (cdns_phy->bpc) {
> + case 8:
> + feedback_factor = 500;
> + break;
> + case 10:
> + feedback_factor = 625;
> + break;
> + case 12:
> + feedback_factor = 750;
> + break;
> + case 16:
> + feedback_factor = 1000;
> + break;
> + default:
> + dev_dbg(cdns_phy->dev, "Invalid ColorDepth\n");
> + return 0;
> + }
> + break;
> + default:
> + /* Assume RGB/YUV444 */
> + switch (cdns_phy->bpc) {
> + case 10:
> + feedback_factor = 1250;
> + break;
> + case 12:
> + feedback_factor = 1500;
> + break;
> + case 16:
> + feedback_factor = 2000;
> + break;
> + default:
> + feedback_factor = 1000;
> + }
> + }
> +
> + return feedback_factor;
> +}
> +
> +static int hdptx_hdmi_phy_config(struct cdns_hdptx_hdmi_phy *cdns_phy,
> + const struct hdptx_hdmi_ctrl *p_ctrl_table,
> + const struct hdptx_hdmi_pll_tuning *p_pll_table,
> + char pclk_in)
this looks bad, please run checkpatch --strict to align these properly
> +{
> + const u32 num_lanes = 4;
> + u32 val, i, k;
> +
> + /* enable PHY isolation mode only for CMN */
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISOLATION_CTRL, 0xD000);
> +
> + /* set cmn_pll0_clk_datart1_div/cmn_pll0_clk_datart0_div dividers */
> + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_ISO_PLL_CTRL1);
> + val &= 0xFF00;
lowercase hex values everywhere pls
> + val |= 0x0012;
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_PLL_CTRL1, val);
> +
> + /* assert PHY reset from isolation register */
> + cdns_phy_reg_write(cdns_phy, PHY_ISO_CMN_CTRL, 0x0000);
> + /* assert PMA CMN reset */
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0000);
> +
> + /* register XCVR_DIAG_BIDI_CTRL */
> + for (k = 0; k < num_lanes; k++)
> + cdns_phy_reg_write(cdns_phy, XCVR_DIAG_BIDI_CTRL | (k << 9), 0x00FF);
> +
> + /* Describing Task phy_cfg_hdp */
> +
> + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> + val &= 0xFFF7;
> + val |= 0x0008;
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> +
> + /* PHY Registers */
> + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> + val &= 0xCFFF;
> + val |= p_ctrl_table->cmn_ref_clk_dig_div << 12;
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> +
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> + val &= 0x00FF;
> + val |= 0x1200;
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> +
> + /* Common control module control and diagnostic registers */
> + val = cdns_phy_reg_read(cdns_phy, CMN_CDIAG_REFCLK_CTRL);
> + val &= 0x8FFF;
> + val |= p_ctrl_table->ref_clk_divider_scaler << 12;
> + val |= 0x00C0;
> + cdns_phy_reg_write(cdns_phy, CMN_CDIAG_REFCLK_CTRL, val);
> +
> + /* High speed clock used */
> + val = cdns_phy_reg_read(cdns_phy, CMN_DIAG_HSCLK_SEL);
> + val &= 0xFF00;
> + val |= (p_ctrl_table->cmnda_hs_clk_0_sel >> 1) << 0;
> + val |= (p_ctrl_table->cmnda_hs_clk_1_sel >> 1) << 4;
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_HSCLK_SEL, val);
> +
> + for (k = 0; k < num_lanes; k++) {
> + val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)));
> + val &= 0xCFFF;
> + val |= (p_ctrl_table->cmnda_hs_clk_0_sel >> 1) << 12;
> + cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)), val);
> + }
> +
> + /* PLL 0 control state machine registers */
> + val = p_ctrl_table->vco_ring_select << 12;
> + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_USER_DEF_CTRL, val);
> +
> + if (pclk_in == true)
> + val = 0x30A0;
> + else {
> + val = cdns_phy_reg_read(cdns_phy, CMN_PLL0_VCOCAL_START);
> + val &= 0xFE00;
> + val |= p_pll_table->vco_cal_code;
> + }
> + cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_START, val);
> +
> + cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_INIT_TMR, 0x0064);
> + cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_ITER_TMR, 0x000A);
> +
> + /* Common functions control and diagnostics registers */
> + val = p_ctrl_table->cmnda_pll0_hs_sym_div_sel << 8;
> + val |= p_ctrl_table->cmnda_pll0_ip_div;
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_INCLK_CTRL, val);
> +
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_OVRD, 0x0000);
> +
> + val = p_ctrl_table->cmnda_pll0_fb_div_high;
> + val |= (1 << 15);
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_FBH_OVRD, val);
> +
> + val = p_ctrl_table->cmnda_pll0_fb_div_low;
> + val |= (1 << 15);
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_FBL_OVRD, val);
> +
> + if (pclk_in == false) {
> + val = p_ctrl_table->cmnda_pll0_pxdiv_low;
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PXL_DIVL, val);
> +
> + val = p_ctrl_table->cmnda_pll0_pxdiv_high;
> + val |= (1 << 15);
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PXL_DIVH, val);
> + }
> +
> + val = p_pll_table->volt_to_current_coarse;
> + val |= (p_pll_table->volt_to_current) << 4;
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_V2I_TUNE, val);
> +
> + val = p_pll_table->charge_pump_gain;
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_CP_TUNE, val);
> +
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_LF_PROG, 0x0008);
> +
> + val = p_pll_table->pmos_ctrl;
> + val |= (p_pll_table->ndac_ctrl) << 8;
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PTATIS_TUNE1, val);
> +
> + val = p_pll_table->ptat_ndac_ctrl;
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PTATIS_TUNE2, val);
> +
> + if (pclk_in == true)
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_TEST_MODE, 0x0022);
> + else
> + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_TEST_MODE, 0x0020);
> +
> + cdns_phy_reg_write(cdns_phy, CMN_PSM_CLK_CTRL, 0x0016);
> +
> + /* Transceiver control and diagnostic registers */
> + for (k = 0; k < num_lanes; k++) {
> + val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)));
> + val &= 0xBFFF;
> + cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val);
> + }
> +
> + for (k = 0; k < num_lanes; k++) {
> + val = cdns_phy_reg_read(cdns_phy, (TX_DIAG_TX_CTRL | (k << 9)));
> + val &= 0xFF3F;
> + val |= (p_ctrl_table->hsclk_div_tx_sub_rate >> 1) << 6;
> + cdns_phy_reg_write(cdns_phy, (TX_DIAG_TX_CTRL | (k << 9)), val);
> + }
> +
> + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> + val &= 0xFF8F;
> + /*
> + * single ended reference clock (val |= 0x0030);
> + * differential clock (val |= 0x0000);
> + * for differential clock on the refclk_p and
> + * refclk_m off chip pins: CMN_DIAG_ACYA[8]=1'b1
> + * cdns_phy_reg_write(cdns_phy, CMN_DIAG_ACYA, 0x0100);
> + */
> + val |= 0x0030;
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> +
> + /* Deassert PHY reset */
> + cdns_phy_reg_write(cdns_phy, PHY_ISO_CMN_CTRL, 0x0001);
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0003);
> +
> + /* Power state machine registers */
> + for (k = 0; k < num_lanes; k++)
> + cdns_phy_reg_write(cdns_phy, XCVR_PSM_RCTRL | (k << 9), 0xFEFC);
> +
> + /* Assert cmn_macro_pwr_en */
> + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0013);
> +
> + /* wait for cmn_macro_pwr_en_ack */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_ISO_CMN_CTRL);
> + if (val & (1 << 5))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "PMA output macro power up failed\n");
> + return -1;
> + }
> +
> + /* wait for cmn_ready */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> + if (val & (1 << 0))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "PMA output ready failed\n");
> + return -1;
> + }
> +
> + for (k = 0; k < num_lanes; k++) {
> + cdns_phy_reg_write(cdns_phy, TX_PSC_A0 | (k << 9), 0x6791);
> + cdns_phy_reg_write(cdns_phy, TX_PSC_A1 | (k << 9), 0x6790);
> + cdns_phy_reg_write(cdns_phy, TX_PSC_A2 | (k << 9), 0x0090);
> + cdns_phy_reg_write(cdns_phy, TX_PSC_A3 | (k << 9), 0x0090);
> +
> + val = cdns_phy_reg_read(cdns_phy, RX_PSC_CAL | (k << 9));
> + val &= 0xFFBB;
> + cdns_phy_reg_write(cdns_phy, RX_PSC_CAL | (k << 9), val);
> +
> + val = cdns_phy_reg_read(cdns_phy, RX_PSC_A0 | (k << 9));
> + val &= 0xFFBB;
> + cdns_phy_reg_write(cdns_phy, RX_PSC_A0 | (k << 9), val);
> + }
> + return 0;
> +}
> +
> +static int hdptx_hdmi_phy_cfg(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 rate)
> +{
> + const struct hdptx_hdmi_ctrl *p_ctrl_table;
> + const struct hdptx_hdmi_pll_tuning *p_pll_table;
> + const u32 refclk_freq_khz = cdns_phy->ref_clk_rate / 1000;
> + const u8 pclk_in = false;
> + u32 pixel_freq = rate;
> + u32 vco_freq, char_freq;
> + u32 div_total, feedback_factor;
> + u32 i, ret;
> +
> + feedback_factor = hdptx_hdmi_feedback_factor(cdns_phy);
> +
> + char_freq = pixel_freq * feedback_factor / 1000;
> +
> + dev_dbg(cdns_phy->dev, "Pixel clock: (%d KHz), character clock: %d, bpc is (%0d-bit)\n",
> + pixel_freq, char_freq, cdns_phy->bpc);
> +
> + /* Get right row from the ctrl_table table.
> + * Check if 'pixel_freq_khz' value matches the PIXEL_CLK_FREQ column.
> + * Consider only the rows with FEEDBACK_FACTOR column matching feedback_factor.
> + */
> + for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++) {
> + if (feedback_factor == pixel_clk_output_ctrl_table[i].feedback_factor &&
> + pixel_freq == pixel_clk_output_ctrl_table[i].pixel_clk_freq_min) {
> + p_ctrl_table = &pixel_clk_output_ctrl_table[i];
> + break;
> + }
> + }
> + if (i == ARRAY_SIZE(pixel_clk_output_ctrl_table)) {
> + dev_warn(cdns_phy->dev, "Pixel clk (%d KHz) not supported, bpc is (%0d-bit)\n",
> + pixel_freq, cdns_phy->bpc);
> + return 0;
> + }
> +
> + div_total = p_ctrl_table->pll_fb_div_total;
> + vco_freq = refclk_freq_khz * div_total / p_ctrl_table->cmnda_pll0_ip_div;
> +
> + /* Get right row from the pixel_clk_output_pll_table table.
> + * Check if vco_freq_khz and feedback_div_total
> + * column matching with pixel_clk_output_pll_table.
> + */
> + for (i = 0; i < ARRAY_SIZE(pixel_clk_output_pll_table); i++) {
> + if (vco_freq == pixel_clk_output_pll_table[i].vco_freq_min &&
> + div_total == pixel_clk_output_pll_table[i].feedback_div_total) {
> + p_pll_table = &pixel_clk_output_pll_table[i];
> + break;
> + }
> + }
> + if (i == ARRAY_SIZE(pixel_clk_output_pll_table)) {
> + dev_warn(cdns_phy->dev, "VCO (%d KHz) not supported\n", vco_freq);
> + return -1;
> + }
> + dev_dbg(cdns_phy->dev, "VCO frequency is (%d KHz)\n", vco_freq);
> +
> + ret = hdptx_hdmi_phy_config(cdns_phy, p_ctrl_table, p_pll_table, pclk_in);
> + if (ret < 0)
> + return ret;
> +
> + return char_freq;
> +}
> +
> +static int hdptx_hdmi_phy_power_up(struct cdns_hdptx_hdmi_phy *cdns_phy)
> +{
> + u32 val, i;
> +
> + /* set Power State to A2 */
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0004);
> +
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_0, 1);
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_1, 1);
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_2, 1);
> + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_3, 1);
> +
> + /* Wait for Power State A2 Ack */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
> + if (val & (1 << 6))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait A2 Ack failed\n");
> + return -1;
> + }
> +
> + /* Power up ARC */
> + hdptx_hdmi_arc_config(cdns_phy);
> +
> + /* Configure PHY in A0 mode (PHY must be in the A0 power
> + * state in order to transmit data)
> + */
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0001);
> +
> + /* Wait for Power State A0 Ack */
> + for (i = 0; i < 10; i++) {
> + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
> + if (val & (1 << 4))
> + break;
> + msleep(20);
> + }
> + if (i == 10) {
> + dev_err(cdns_phy->dev, "Wait A0 Ack failed\n");
> + return -1;
> + }
> + return 0;
> +}
> +
> +static int hdptx_hdmi_phy_power_down(struct cdns_hdptx_hdmi_phy *cdns_phy)
> +{
> + int timeout;
> + u32 reg_val;
> +
> + reg_val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
> + reg_val &= 0xfff0;
> + /* PHY_DP_MODE_CTL set to A3 power state*/
> + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, reg_val | 0x8);
> +
> + /* Wait for A3 acknowledge */
> + timeout = 0;
> + do {
> + reg_val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
> + dev_dbg(cdns_phy->dev, "Reg val is 0x%04x\n", reg_val);
> + timeout++;
> + msleep(100);
> + } while (!(reg_val & (0x8 << 4)) && (timeout < 10));
> +
> + return 0;
> +}
> +
> +static int cdns_hdptx_hdmi_phy_on(struct phy *phy)
> +{
> + struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
> +
> + return hdptx_hdmi_phy_power_up(cdns_phy);
> +}
> +
> +static int cdns_hdptx_hdmi_phy_off(struct phy *phy)
> +{
> + struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
> +
> + hdptx_hdmi_phy_power_down(cdns_phy);
> + return 0;
> +}
> +
> +int cdns_hdptx_hdmi_phy_valid(struct phy *phy, enum phy_mode mode, int submode,
> + union phy_configure_opts *opts)
> +{
> + u32 rate = opts->hdmi.pixel_clk_rate;
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++)
> + if (rate == pixel_clk_output_ctrl_table[i].pixel_clk_freq_min)
> + return 0;
> +
> + return -EINVAL;
> +}
> +
> +static int cdns_hdptx_hdmi_phy_init(struct phy *phy)
> +{
> + return 0;
> +}
> +
> +static int cdns_hdptx_hdmi_configure(struct phy *phy,
> + union phy_configure_opts *opts)
> +{
> + struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
> + int ret;
> +
> + cdns_phy->pixel_clk_rate = opts->hdmi.pixel_clk_rate;
> + cdns_phy->color_space = opts->hdmi.color_space;
> + cdns_phy->bpc = opts->hdmi.bpc;
> +
> + /* Check HDMI FW alive before HDMI PHY init */
> + ret = hdptx_phy_check_alive(cdns_phy);
> + if (ret == false) {
> + dev_err(cdns_phy->dev, "NO HDMI FW running\n");
> + return -ENXIO;
> + }
> +
> + /* Configure PHY */
> + if (hdptx_hdmi_phy_cfg(cdns_phy, cdns_phy->pixel_clk_rate) < 0) {
> + dev_err(cdns_phy->dev, "failed to set phy pclock\n");
> + return -EINVAL;
> + }
> +
> + ret = hdptx_hdmi_phy_power_up(cdns_phy);
> + if (ret < 0)
> + return ret;
> +
> + hdptx_hdmi_phy_set_vswing(cdns_phy);
> +
> + return 0;
> +}
> +
> +static const struct phy_ops cdns_hdptx_hdmi_phy_ops = {
> + .init = cdns_hdptx_hdmi_phy_init,
> + .configure = cdns_hdptx_hdmi_configure,
> + .power_on = cdns_hdptx_hdmi_phy_on,
> + .power_off = cdns_hdptx_hdmi_phy_off,
> + .validate = cdns_hdptx_hdmi_phy_valid,
> + .owner = THIS_MODULE,
> +};
> +
> +static int cdns_hdptx_hdmi_phy_probe(struct platform_device *pdev)
> +{
> + struct cdns_hdptx_hdmi_phy *cdns_phy;
> + struct device *dev = &pdev->dev;
> + struct device_node *node = dev->of_node;
> + struct phy_provider *phy_provider;
> + struct resource *res;
> + struct phy *phy;
> + int ret;
> +
> + cdns_phy = devm_kzalloc(dev, sizeof(*cdns_phy), GFP_KERNEL);
> + if (!cdns_phy)
> + return -ENOMEM;
> +
> + dev_set_drvdata(dev, cdns_phy);
> + cdns_phy->dev = dev;
> + mutex_init(&cdns_phy->mbox_mutex);
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!res)
> + return -ENODEV;
> + cdns_phy->regs = devm_ioremap(dev, res->start, resource_size(res));
> + if (IS_ERR(cdns_phy->regs))
> + return PTR_ERR(cdns_phy->regs);
> +
> + phy = devm_phy_create(dev, node, &cdns_hdptx_hdmi_phy_ops);
> + if (IS_ERR(phy))
> + return PTR_ERR(phy);
> +
> + phy->attrs.mode = PHY_MODE_HDMI;
> +
> + cdns_phy->phy = phy;
> + phy_set_drvdata(phy, cdns_phy);
> +
> + ret = hdptx_hdmi_clk_enable(cdns_phy);
> + if (ret) {
> + dev_err(dev, "Init clk fail\n");
> + return -EINVAL;
> + }
> +
> + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> + if (IS_ERR(phy_provider)) {
> + ret = PTR_ERR(phy_provider);
> + goto clk_disable;
> + }
> +
> + dev_dbg(dev, "probe success!\n");
> +
> + return 0;
> +
> +clk_disable:
> + hdptx_hdmi_clk_disable(cdns_phy);
> +
> + return -EINVAL;
> +}
> +
> +static int cdns_hdptx_hdmi_phy_remove(struct platform_device *pdev)
> +{
> + struct cdns_hdptx_hdmi_phy *cdns_phy = platform_get_drvdata(pdev);
> +
> + hdptx_hdmi_clk_disable(cdns_phy);
> +
> + return 0;
> +}
> +
> +static const struct of_device_id cdns_hdptx_hdmi_phy_of_match[] = {
> + {.compatible = "fsl,imx8mq-hdmi-phy" },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, cdns_hdptx_hdmi_phy_of_match);
> +
> +static struct platform_driver cdns_hdptx_hdmi_phy_driver = {
> + .probe = cdns_hdptx_hdmi_phy_probe,
> + .remove = cdns_hdptx_hdmi_phy_remove,
> + .driver = {
> + .name = "cdns-hdptx-hdmi-phy",
> + .of_match_table = cdns_hdptx_hdmi_phy_of_match,
> + }
> +};
> +module_platform_driver(cdns_hdptx_hdmi_phy_driver);
> +
> +MODULE_AUTHOR("Sandor Yu <[email protected]>");
> +MODULE_DESCRIPTION("Cadence HDP-TX HDMI PHY driver");
> +MODULE_LICENSE("GPL");
> --
> 2.34.1
--
~Vinod
On 15/06/2023 04:38, Sandor Yu wrote:
> Allow HDMI PHYs to be configured through the generic
> functions through a custom structure added to the generic union.
>
> The parameters added here are based on HDMI PHY
> implementation practices. The current set of parameters
> should cover the potential users.
>
> Signed-off-by: Sandor Yu <[email protected]>
> ---
> include/linux/phy/phy-hdmi.h | 38 ++++++++++++++++++++++++++++++++++++
> include/linux/phy/phy.h | 7 ++++++-
> 2 files changed, 44 insertions(+), 1 deletion(-)
> create mode 100644 include/linux/phy/phy-hdmi.h
>
> diff --git a/include/linux/phy/phy-hdmi.h b/include/linux/phy/phy-hdmi.h
> new file mode 100644
> index 000000000000..5765aa5bc175
> --- /dev/null
> +++ b/include/linux/phy/phy-hdmi.h
> @@ -0,0 +1,38 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright 2022 NXP
> + */
> +
> +#ifndef __PHY_HDMI_H_
> +#define __PHY_HDMI_H_
> +
> +/**
> + * Pixel Encoding as HDMI Specification
> + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
> + * YUV420: HDMI Specification 2.a Section 7.1
> + */
> +enum hdmi_phy_colorspace {
> + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
> + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
> + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
> + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
> + HDMI_PHY_COLORSPACE_RESERVED4,
> + HDMI_PHY_COLORSPACE_RESERVED5,
> + HDMI_PHY_COLORSPACE_RESERVED6,
> +};
This enum duplicates enum hdmi_colorspace from <linux/hdmi.h>
HDMI 2.0 defines '7' to be IDO-defined.
Would it be better to use that enum instead?
> +
> +/**
> + * struct phy_configure_opts_hdmi - HDMI configuration set
> + * @pixel_clk_rate: Pixel clock of video modes in KHz.
> + * @bpc: Maximum bits per color channel.
> + * @color_space: Colorspace in enum hdmi_phy_colorspace.
> + *
> + * This structure is used to represent the configuration state of a HDMI phy.
> + */
> +struct phy_configure_opts_hdmi {
> + unsigned int pixel_clk_rate;
> + unsigned int bpc;
> + enum hdmi_phy_colorspace color_space;
> +};
> +
> +#endif /* __PHY_HDMI_H_ */
[skipped the rest]
--
With best wishes
Dmitry
Hi Dmitry,
Thanks for your comments,
> -----Original Message-----
> From: Dmitry Baryshkov <[email protected]>
> Sent: 2023年6月25日 2:02
> To: Sandor Yu <[email protected]>; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]
> Cc: [email protected]; dl-linux-imx <[email protected]>; Oliver Brown
> <[email protected]>
> Subject: [EXT] Re: [PATCH v6 4/8] phy: Add HDMI configuration options
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> On 15/06/2023 04:38, Sandor Yu wrote:
> > Allow HDMI PHYs to be configured through the generic functions through
> > a custom structure added to the generic union.
> >
> > The parameters added here are based on HDMI PHY implementation
> > practices. The current set of parameters should cover the potential
> > users.
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > include/linux/phy/phy-hdmi.h | 38
> ++++++++++++++++++++++++++++++++++++
> > include/linux/phy/phy.h | 7 ++++++-
> > 2 files changed, 44 insertions(+), 1 deletion(-)
> > create mode 100644 include/linux/phy/phy-hdmi.h
> >
> > diff --git a/include/linux/phy/phy-hdmi.h
> > b/include/linux/phy/phy-hdmi.h new file mode 100644 index
> > 000000000000..5765aa5bc175
> > --- /dev/null
> > +++ b/include/linux/phy/phy-hdmi.h
> > @@ -0,0 +1,38 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * Copyright 2022 NXP
> > + */
> > +
> > +#ifndef __PHY_HDMI_H_
> > +#define __PHY_HDMI_H_
> > +
> > +/**
> > + * Pixel Encoding as HDMI Specification
> > + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
> > + * YUV420: HDMI Specification 2.a Section 7.1 */ enum
> > +hdmi_phy_colorspace {
> > + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
> > + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
> > + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
> > + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
> > + HDMI_PHY_COLORSPACE_RESERVED4,
> > + HDMI_PHY_COLORSPACE_RESERVED5,
> > + HDMI_PHY_COLORSPACE_RESERVED6,
> > +};
>
> This enum duplicates enum hdmi_colorspace from <linux/hdmi.h> HDMI 2.0
> defines '7' to be IDO-defined.
>
> Would it be better to use that enum instead?
Accept. I will create head file hdmi_colorspace.h to reuse enum hdmi_colorspace in <linux/hdmi.h>.
B.R
Sandor
>
> > +
> > +/**
> > + * struct phy_configure_opts_hdmi - HDMI configuration set
> > + * @pixel_clk_rate: Pixel clock of video modes in KHz.
> > + * @bpc: Maximum bits per color channel.
> > + * @color_space: Colorspace in enum hdmi_phy_colorspace.
> > + *
> > + * This structure is used to represent the configuration state of a HDMI phy.
> > + */
> > +struct phy_configure_opts_hdmi {
> > + unsigned int pixel_clk_rate;
> > + unsigned int bpc;
> > + enum hdmi_phy_colorspace color_space; };
> > +
> > +#endif /* __PHY_HDMI_H_ */
>
> [skipped the rest]
>
> --
> With best wishes
> Dmitry
On Mon, 10 Jul 2023 at 10:28, Sandor Yu <[email protected]> wrote:
>
> Hi Dmitry,
>
> Thanks for your comments,
>
> > -----Original Message-----
> > From: Dmitry Baryshkov <[email protected]>
> > Sent: 2023年6月25日 2:02
> > To: Sandor Yu <[email protected]>; [email protected];
> > [email protected]; [email protected];
> > [email protected]; [email protected];
> > [email protected]; [email protected]; [email protected];
> > [email protected]; [email protected];
> > [email protected]; [email protected]; [email protected];
> > [email protected]; [email protected];
> > [email protected]; [email protected];
> > [email protected]; [email protected]
> > Cc: [email protected]; dl-linux-imx <[email protected]>; Oliver Brown
> > <[email protected]>
> > Subject: [EXT] Re: [PATCH v6 4/8] phy: Add HDMI configuration options
Is this part necessary?
> >
> > Caution: This is an external email. Please take care when clicking links or
> > opening attachments. When in doubt, report the message using the 'Report
> > this email' button
> >
> >
> > On 15/06/2023 04:38, Sandor Yu wrote:
> > > Allow HDMI PHYs to be configured through the generic functions through
> > > a custom structure added to the generic union.
> > >
> > > The parameters added here are based on HDMI PHY implementation
> > > practices. The current set of parameters should cover the potential
> > > users.
> > >
> > > Signed-off-by: Sandor Yu <[email protected]>
> > > ---
> > > include/linux/phy/phy-hdmi.h | 38
> > ++++++++++++++++++++++++++++++++++++
> > > include/linux/phy/phy.h | 7 ++++++-
> > > 2 files changed, 44 insertions(+), 1 deletion(-)
> > > create mode 100644 include/linux/phy/phy-hdmi.h
> > >
> > > diff --git a/include/linux/phy/phy-hdmi.h
> > > b/include/linux/phy/phy-hdmi.h new file mode 100644 index
> > > 000000000000..5765aa5bc175
> > > --- /dev/null
> > > +++ b/include/linux/phy/phy-hdmi.h
> > > @@ -0,0 +1,38 @@
> > > +/* SPDX-License-Identifier: GPL-2.0 */
> > > +/*
> > > + * Copyright 2022 NXP
> > > + */
> > > +
> > > +#ifndef __PHY_HDMI_H_
> > > +#define __PHY_HDMI_H_
> > > +
> > > +/**
> > > + * Pixel Encoding as HDMI Specification
> > > + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
> > > + * YUV420: HDMI Specification 2.a Section 7.1 */ enum
> > > +hdmi_phy_colorspace {
> > > + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
> > > + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
> > > + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
> > > + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
> > > + HDMI_PHY_COLORSPACE_RESERVED4,
> > > + HDMI_PHY_COLORSPACE_RESERVED5,
> > > + HDMI_PHY_COLORSPACE_RESERVED6,
> > > +};
> >
> > This enum duplicates enum hdmi_colorspace from <linux/hdmi.h> HDMI 2.0
> > defines '7' to be IDO-defined.
> >
> > Would it be better to use that enum instead?
> Accept. I will create head file hdmi_colorspace.h to reuse enum hdmi_colorspace in <linux/hdmi.h>.
Hmm, you need another header file to reuse this enum.
>
> B.R
> Sandor
> >
> > > +
> > > +/**
> > > + * struct phy_configure_opts_hdmi - HDMI configuration set
> > > + * @pixel_clk_rate: Pixel clock of video modes in KHz.
> > > + * @bpc: Maximum bits per color channel.
> > > + * @color_space: Colorspace in enum hdmi_phy_colorspace.
> > > + *
> > > + * This structure is used to represent the configuration state of a HDMI phy.
> > > + */
> > > +struct phy_configure_opts_hdmi {
> > > + unsigned int pixel_clk_rate;
> > > + unsigned int bpc;
> > > + enum hdmi_phy_colorspace color_space; };
> > > +
> > > +#endif /* __PHY_HDMI_H_ */
> >
> > [skipped the rest]
> >
> > --
> > With best wishes
> > Dmitry
>
--
With best wishes
Dmitry
Hi Vinod,
Thanks for your comments,
> -----Original Message-----
> From: Vinod Koul <[email protected]>
> Sent: 2023年6月21日 19:24
> To: Sandor Yu <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; dl-linux-imx
> <[email protected]>; Oliver Brown <[email protected]>
> Subject: [EXT] Re: [PATCH v6 7/8] phy: freescale: Add DisplayPort PHY driver
> for i.MX8MQ
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> On 15-06-23, 09:38, Sandor Yu wrote:
> > Add Cadence HDP-TX DisplayPort PHY driver for i.MX8MQ
> >
> > Cadence HDP-TX PHY could be put in either DP mode or HDMI mode base
> on
> > the configuration chosen.
> > DisplayPort PHY mode is configurated in the driver.
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > drivers/phy/freescale/Kconfig | 9 +
> > drivers/phy/freescale/Makefile | 1 +
> > drivers/phy/freescale/phy-fsl-imx8mq-dp.c | 697
> > ++++++++++++++++++++++
> > 3 files changed, 707 insertions(+)
> > create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-dp.c
> >
> > diff --git a/drivers/phy/freescale/Kconfig
> > b/drivers/phy/freescale/Kconfig index 853958fb2c06..a99ee370eda6
> > 100644
> > --- a/drivers/phy/freescale/Kconfig
> > +++ b/drivers/phy/freescale/Kconfig
> > @@ -35,6 +35,15 @@ config PHY_FSL_IMX8M_PCIE
> > Enable this to add support for the PCIE PHY as found on
> > i.MX8M family of SOCs.
> >
> > +config PHY_CADENCE_DP_PHY
> > + tristate "Cadence HDPTX DP PHY support"
> > + depends on OF && HAS_IOMEM
> > + depends on COMMON_CLK
> > + select GENERIC_PHY
> > + help
> > + Enable this to support the Cadence HDPTX DP PHY driver
> > + on NXP's i.MX8MQ SOC.
> > +
> > endif
> >
> > config PHY_FSL_LYNX_28G
> > diff --git a/drivers/phy/freescale/Makefile
> > b/drivers/phy/freescale/Makefile index cedb328bc4d2..c3bdf3fa2e72
> > 100644
> > --- a/drivers/phy/freescale/Makefile
> > +++ b/drivers/phy/freescale/Makefile
> > @@ -4,3 +4,4 @@ obj-$(CONFIG_PHY_MIXEL_LVDS_PHY) +=
> phy-fsl-imx8qm-lvds-phy.o
> > obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o
> > obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o
> > obj-$(CONFIG_PHY_FSL_LYNX_28G) +=
> phy-fsl-lynx-28g.o
> > +obj-$(CONFIG_PHY_CADENCE_DP_PHY) += phy-fsl-imx8mq-dp.o
> > diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-dp.c
> > b/drivers/phy/freescale/phy-fsl-imx8mq-dp.c
> > new file mode 100644
> > index 000000000000..2bd6772a5d3b
> > --- /dev/null
> > +++ b/drivers/phy/freescale/phy-fsl-imx8mq-dp.c
> > @@ -0,0 +1,697 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * Cadence HDP-TX Display Port Interface (DP) PHY driver
> > + *
> > + * Copyright (C) 2022 NXP Semiconductor, Inc.
> > + */
> > +#include <asm/unaligned.h>
> > +#include <linux/clk.h>
> > +#include <linux/kernel.h>
> > +#include <linux/phy/phy.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/io.h>
> > +#include <linux/iopoll.h>
> > +
> > +#include <drm/bridge/cdns-mhdp-mailbox.h>
> > +
> > +#define ADDR_PHY_AFE 0x80000
>
> Is this always fixed for every phy generation?
Yes, the offset is fixed for every cdns hdmi/dp external phy.
> > +
> > +/* PHY registers */
> > +#define CMN_SSM_BIAS_TMR 0x0022
> > +#define CMN_PLLSM0_PLLEN_TMR 0x0029
> > +#define CMN_PLLSM0_PLLPRE_TMR 0x002A
> > +#define CMN_PLLSM0_PLLVREF_TMR 0x002B
> > +#define CMN_PLLSM0_PLLLOCK_TMR 0x002C
> > +#define CMN_PLLSM0_USER_DEF_CTRL 0x002F
> > +#define CMN_PSM_CLK_CTRL 0x0061
> > +#define CMN_PLL0_VCOCAL_START 0x0081
> > +#define CMN_PLL0_VCOCAL_INIT_TMR 0x0084
> > +#define CMN_PLL0_VCOCAL_ITER_TMR 0x0085
> > +#define CMN_PLL0_INTDIV 0x0094
> > +#define CMN_PLL0_FRACDIV 0x0095
> > +#define CMN_PLL0_HIGH_THR 0x0096
> > +#define CMN_PLL0_DSM_DIAG 0x0097
> > +#define CMN_PLL0_SS_CTRL2 0x0099
> > +#define CMN_ICAL_INIT_TMR 0x00C4
> > +#define CMN_ICAL_ITER_TMR 0x00C5
> > +#define CMN_RXCAL_INIT_TMR 0x00D4
> > +#define CMN_RXCAL_ITER_TMR 0x00D5
> > +#define CMN_TXPUCAL_INIT_TMR 0x00E4
> > +#define CMN_TXPUCAL_ITER_TMR 0x00E5
> > +#define CMN_TXPDCAL_INIT_TMR 0x00F4
> > +#define CMN_TXPDCAL_ITER_TMR 0x00F5
> > +#define CMN_ICAL_ADJ_INIT_TMR 0x0102
> > +#define CMN_ICAL_ADJ_ITER_TMR 0x0103
> > +#define CMN_RX_ADJ_INIT_TMR 0x0106
> > +#define CMN_RX_ADJ_ITER_TMR 0x0107
> > +#define CMN_TXPU_ADJ_INIT_TMR 0x010A
> > +#define CMN_TXPU_ADJ_ITER_TMR 0x010B
> > +#define CMN_TXPD_ADJ_INIT_TMR 0x010E
> > +#define CMN_TXPD_ADJ_ITER_TMR 0x010F
> > +#define CMN_DIAG_PLL0_FBH_OVRD 0x01C0
> > +#define CMN_DIAG_PLL0_FBL_OVRD 0x01C1
> > +#define CMN_DIAG_PLL0_OVRD 0x01C2
> > +#define CMN_DIAG_PLL0_TEST_MODE 0x01C4
> > +#define CMN_DIAG_PLL0_V2I_TUNE 0x01C5
> > +#define CMN_DIAG_PLL0_CP_TUNE 0x01C6
> > +#define CMN_DIAG_PLL0_LF_PROG 0x01C7
> > +#define CMN_DIAG_PLL0_PTATIS_TUNE1 0x01C8
> > +#define CMN_DIAG_PLL0_PTATIS_TUNE2 0x01C9
> > +#define CMN_DIAG_HSCLK_SEL 0x01E0
> > +#define CMN_DIAG_PER_CAL_ADJ 0x01EC
> > +#define CMN_DIAG_CAL_CTRL 0x01ED
> > +#define CMN_DIAG_ACYA 0x01FF
> > +#define XCVR_PSM_RCTRL 0x4001
> > +#define XCVR_PSM_CAL_TMR 0x4002
> > +#define XCVR_PSM_A0IN_TMR 0x4003
> > +#define TX_TXCC_CAL_SCLR_MULT_0 0x4047
> > +#define TX_TXCC_CPOST_MULT_00_0 0x404C
> > +#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
> > +#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
> > +#define XCVR_DIAG_HSCLK_SEL 0x40E1
> > +#define XCVR_DIAG_LANE_FCM_EN_MGN_TMR 0x40F2
> > +#define TX_PSC_A0 0x4100
> > +#define TX_PSC_A1 0x4101
> > +#define TX_PSC_A2 0x4102
> > +#define TX_PSC_A3 0x4103
> > +#define TX_RCVDET_EN_TMR 0x4122
> > +#define TX_RCVDET_ST_TMR 0x4123
> > +#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
> > +#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
> > +#define TX_DIAG_ACYA_0 0x41FF
> > +#define TX_DIAG_ACYA_1 0x43FF
> > +#define TX_DIAG_ACYA_2 0x45FF
> > +#define TX_DIAG_ACYA_3 0x47FF
> > +#define TX_ANA_CTRL_REG_1 0x5020
> > +#define TX_ANA_CTRL_REG_2 0x5021
> > +#define TX_DIG_CTRL_REG_1 0x5023
> > +#define TX_DIG_CTRL_REG_2 0x5024
> > +#define TXDA_CYA_AUXDA_CYA 0x5025
> > +#define TX_ANA_CTRL_REG_3 0x5026
> > +#define TX_ANA_CTRL_REG_4 0x5027
> > +#define TX_ANA_CTRL_REG_5 0x5029
> > +#define RX_PSC_A0 0x8000
> > +#define RX_PSC_CAL 0x8006
> > +#define PHY_HDP_MODE_CTRL 0xC008
> > +#define PHY_HDP_CLK_CTL 0xC009
> > +#define PHY_PMA_CMN_CTRL1 0xC800
>
> Lower case hex values please
OK, I will correct it.
>
> > +
> > +#define REF_CLK_27MHZ 27000000
> > +
> > +enum dp_link_rate {
> > + RATE_1_6 = 162000,
> > + RATE_2_1 = 216000,
> > + RATE_2_4 = 243000,
> > + RATE_2_7 = 270000,
> > + RATE_3_2 = 324000,
> > + RATE_4_3 = 432000,
> > + RATE_5_4 = 540000,
> > + RATE_8_1 = 810000,
> > +};
> > +
> > +#define MAX_LINK_RATE RATE_5_4
> > +
> > +struct phy_pll_reg {
> > + u16 val[7];
> > + u32 addr;
> > +};
> > +
> > +static const struct phy_pll_reg phy_pll_27m_cfg[] = {
> > + /* 1.62 2.16 2.43 2.7 3.24 4.32 5.4
> register address */
> > + {{ 0x010E, 0x010E, 0x010E, 0x010E, 0x010E, 0x010E, 0x010E },
> CMN_PLL0_VCOCAL_INIT_TMR },
> > + {{ 0x001B, 0x001B, 0x001B, 0x001B, 0x001B, 0x001B, 0x001B },
> CMN_PLL0_VCOCAL_ITER_TMR },
> > + {{ 0x30B9, 0x3087, 0x3096, 0x30B4, 0x30B9, 0x3087, 0x30B4 },
> CMN_PLL0_VCOCAL_START },
> > + {{ 0x0077, 0x009F, 0x00B3, 0x00C7, 0x0077, 0x009F, 0x00C7 },
> CMN_PLL0_INTDIV },
> > + {{ 0xF9DA, 0xF7CD, 0xF6C7, 0xF5C1, 0xF9DA, 0xF7CD, 0xF5C1 },
> CMN_PLL0_FRACDIV },
> > + {{ 0x001E, 0x0028, 0x002D, 0x0032, 0x001E, 0x0028, 0x0032 },
> CMN_PLL0_HIGH_THR },
> > + {{ 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020 },
> CMN_PLL0_DSM_DIAG },
> > + {{ 0x0000, 0x1000, 0x1000, 0x1000, 0x0000, 0x1000, 0x1000 },
> CMN_PLLSM0_USER_DEF_CTRL },
> > + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 },
> CMN_DIAG_PLL0_OVRD },
> > + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 },
> CMN_DIAG_PLL0_FBH_OVRD },
> > + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 },
> CMN_DIAG_PLL0_FBL_OVRD },
> > + {{ 0x0006, 0x0007, 0x0007, 0x0007, 0x0006, 0x0007, 0x0007 },
> CMN_DIAG_PLL0_V2I_TUNE },
> > + {{ 0x0043, 0x0043, 0x0043, 0x0042, 0x0043, 0x0043, 0x0042 },
> CMN_DIAG_PLL0_CP_TUNE },
> > + {{ 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008 },
> CMN_DIAG_PLL0_LF_PROG },
> > + {{ 0x0100, 0x0001, 0x0001, 0x0001, 0x0100, 0x0001, 0x0001 },
> CMN_DIAG_PLL0_PTATIS_TUNE1 },
> > + {{ 0x0007, 0x0001, 0x0001, 0x0001, 0x0007, 0x0001, 0x0001 },
> CMN_DIAG_PLL0_PTATIS_TUNE2 },
> > + {{ 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020 },
> CMN_DIAG_PLL0_TEST_MODE},
> > + {{ 0x0016, 0x0016, 0x0016, 0x0016, 0x0016, 0x0016, 0x0016 },
> > +CMN_PSM_CLK_CTRL }
>
> again, lower case please
OK, will change it in the next version.
>
> > +};
> > +
> > +struct cdns_hdptx_dp_phy {
> > + void __iomem *regs; /* DPTX registers base */
> > + struct device *dev;
> > + struct phy *phy;
> > + struct mutex mbox_mutex; /* mutex to protect mailbox */
> > + struct clk *ref_clk, *apb_clk;
> > + u32 ref_clk_rate;
> > + u32 num_lanes;
> > + u32 link_rate;
> > + bool power_up;
> > +};
> > +
> > +static int cdns_phy_reg_write(struct cdns_hdptx_dp_phy *cdns_phy, u32
> > +addr, u32 val) {
> > + return cdns_mhdp_reg_write(cdns_phy, ADDR_PHY_AFE + (addr <<
> 2),
> > +val); }
> > +
> > +static u32 cdns_phy_reg_read(struct cdns_hdptx_dp_phy *cdns_phy, u32
> > +addr) {
> > + u32 reg32;
> > +
> > + cdns_mhdp_reg_read(cdns_phy, ADDR_PHY_AFE + (addr << 2),
> ®32);
> > + return reg32;
> > +}
> > +
> > +static int link_rate_index(u32 rate)
> > +{
> > + switch (rate) {
> > + case RATE_1_6:
> > + return 0;
> > + case RATE_2_1:
> > + return 1;
> > + case RATE_2_4:
> > + return 2;
> > + case RATE_2_7:
> > + return 3;
> > + case RATE_3_2:
> > + return 4;
> > + case RATE_4_3:
> > + return 5;
> > + case RATE_5_4:
> > + return 6;
> > + default:
> > + return -1;
> > + }
> > +}
> > +
> > +static int hdptx_dp_clk_enable(struct cdns_hdptx_dp_phy *cdns_phy) {
> > + struct device *dev = cdns_phy->dev;
> > + u32 ref_clk_rate;
> > + int ret;
> > +
> > + cdns_phy->ref_clk = devm_clk_get(dev, "ref");
> > + if (IS_ERR(cdns_phy->ref_clk)) {
> > + dev_err(dev, "phy ref clock not found\n");
> > + return PTR_ERR(cdns_phy->ref_clk);
> > + }
> > +
> > + cdns_phy->apb_clk = devm_clk_get(dev, "apb");
> > + if (IS_ERR(cdns_phy->apb_clk)) {
> > + dev_err(dev, "phy apb clock not found\n");
> > + return PTR_ERR(cdns_phy->apb_clk);
> > + }
> > +
> > + ret = clk_prepare_enable(cdns_phy->ref_clk);
> > + if (ret) {
> > + dev_err(cdns_phy->dev, "Failed to prepare ref clock\n");
> > + return ret;
> > + }
> > +
> > + ref_clk_rate = clk_get_rate(cdns_phy->ref_clk);
> > + if (!ref_clk_rate) {
> > + dev_err(cdns_phy->dev, "Failed to get ref clock rate\n");
> > + goto err_ref_clk;
> > + }
> > +
> > + if (ref_clk_rate == REF_CLK_27MHZ)
> > + cdns_phy->ref_clk_rate = ref_clk_rate;
> > + else {
> > + dev_err(cdns_phy->dev, "Not support Ref Clock
> Rate(%dHz)\n", ref_clk_rate);
> > + goto err_ref_clk;
> > + }
> > +
> > + ret = clk_prepare_enable(cdns_phy->apb_clk);
> > + if (ret) {
> > + dev_err(cdns_phy->dev, "Failed to prepare apb clock\n");
> > + goto err_ref_clk;
> > + }
> > +
> > + return 0;
> > +
> > +err_ref_clk:
> > + clk_disable_unprepare(cdns_phy->ref_clk);
> > + return -EINVAL;
> > +}
> > +
> > +static void hdptx_dp_clk_disable(struct cdns_hdptx_dp_phy *cdns_phy)
> > +{
> > + clk_disable_unprepare(cdns_phy->ref_clk);
> > + clk_disable_unprepare(cdns_phy->apb_clk);
> > +}
> > +
> > +static void hdptx_dp_aux_cfg(struct cdns_hdptx_dp_phy *cdns_phy) {
> > + /* Power up Aux */
> > + cdns_phy_reg_write(cdns_phy, TXDA_CYA_AUXDA_CYA, 1);
> > +
> > + cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_1, 0x3);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_2, 36);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0100);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0300);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_3, 0x0000);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2008);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2018);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA018);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030C);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_5, 0x0000);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_4, 0x1001);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA098);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xA198);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030d);
> > + ndelay(150);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030f); }
> > +
> > +/* PMA common configuration for 27MHz */ static void
> > +hdptx_dp_phy_pma_cmn_cfg_27mhz(struct cdns_hdptx_dp_phy
> *cdns_phy) {
> > + u32 num_lanes = cdns_phy->num_lanes;
> > + u16 val;
> > + int k;
> > +
> > + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> > + val &= 0xFFF7;
> > + val |= 0x0008;
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> > +
> > + /* Startup state machine registers */
> > + cdns_phy_reg_write(cdns_phy, CMN_SSM_BIAS_TMR, 0x0087);
> > + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLEN_TMR,
> 0x001B);
> > + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLPRE_TMR,
> 0x0036);
> > + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLVREF_TMR,
> 0x001B);
> > + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLLOCK_TMR,
> 0x006C);
> > +
> > + /* Current calibration registers */
> > + cdns_phy_reg_write(cdns_phy, CMN_ICAL_INIT_TMR, 0x0044);
> > + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ITER_TMR, 0x0006);
> > + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ADJ_INIT_TMR,
> 0x0022);
> > + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ADJ_ITER_TMR,
> 0x0006);
> > +
> > + /* Resistor calibration registers */
> > + cdns_phy_reg_write(cdns_phy, CMN_TXPUCAL_INIT_TMR, 0x0022);
> > + cdns_phy_reg_write(cdns_phy, CMN_TXPUCAL_ITER_TMR,
> 0x0006);
> > + cdns_phy_reg_write(cdns_phy, CMN_TXPU_ADJ_INIT_TMR,
> 0x0022);
> > + cdns_phy_reg_write(cdns_phy, CMN_TXPU_ADJ_ITER_TMR,
> 0x0006);
> > + cdns_phy_reg_write(cdns_phy, CMN_TXPDCAL_INIT_TMR, 0x0022);
> > + cdns_phy_reg_write(cdns_phy, CMN_TXPDCAL_ITER_TMR,
> 0x0006);
> > + cdns_phy_reg_write(cdns_phy, CMN_TXPD_ADJ_INIT_TMR,
> 0x0022);
> > + cdns_phy_reg_write(cdns_phy, CMN_TXPD_ADJ_ITER_TMR,
> 0x0006);
> > + cdns_phy_reg_write(cdns_phy, CMN_RXCAL_INIT_TMR, 0x0022);
> > + cdns_phy_reg_write(cdns_phy, CMN_RXCAL_ITER_TMR, 0x0006);
> > + cdns_phy_reg_write(cdns_phy, CMN_RX_ADJ_INIT_TMR, 0x0022);
> > + cdns_phy_reg_write(cdns_phy, CMN_RX_ADJ_ITER_TMR, 0x0006);
> > +
> > + for (k = 0; k < num_lanes; k = k + 1) {
> > + /* Power state machine registers */
> > + cdns_phy_reg_write(cdns_phy, XCVR_PSM_CAL_TMR |
> (k << 9), 0x016D);
> > + cdns_phy_reg_write(cdns_phy, XCVR_PSM_A0IN_TMR |
> (k << 9), 0x016D);
> > + /* Transceiver control and diagnostic registers */
> > + cdns_phy_reg_write(cdns_phy,
> XCVR_DIAG_LANE_FCM_EN_MGN_TMR | (k << 9), 0x00A2);
> > + cdns_phy_reg_write(cdns_phy,
> TX_DIAG_BGREF_PREDRV_DELAY | (k << 9), 0x0097);
> > + /* Transmitter receiver detect registers */
> > + cdns_phy_reg_write(cdns_phy, TX_RCVDET_EN_TMR | (k
> << 9), 0x0A8C);
> > + cdns_phy_reg_write(cdns_phy, TX_RCVDET_ST_TMR | (k
> << 9), 0x0036);
> > + }
> > +
> > + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_0, 1);
> > + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_1, 1);
> > + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_2, 1);
> > + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_3, 1); }
> > +
> > +static void hdptx_dp_phy_pma_cmn_pll0_27mhz(struct
> cdns_hdptx_dp_phy
> > +*cdns_phy) {
> > + u32 num_lanes = cdns_phy->num_lanes;
> > + u32 link_rate = cdns_phy->link_rate;
> > + u16 val;
> > + int index, i, k;
> > +
> > + /* DP PLL data rate 0/1 clock divider value */
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + val &= 0x00FF;
> > + if (link_rate <= RATE_2_7)
> > + val |= 0x2400;
> > + else
> > + val |= 0x1200;
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> > +
> > + /* High speed clock 0/1 div */
> > + val = cdns_phy_reg_read(cdns_phy, CMN_DIAG_HSCLK_SEL);
> > + val &= 0xFFCC;
> > + if (link_rate <= RATE_2_7)
> > + val |= 0x0011;
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_HSCLK_SEL, val);
> > +
> > + for (k = 0; k < num_lanes; k++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> (XCVR_DIAG_HSCLK_SEL | (k << 9)));
> > + val = val & 0xCFFF;
> > + if (link_rate <= RATE_2_7)
> > + val |= 0x1000;
> > + cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_HSCLK_SEL |
> (k << 9)), val);
> > + }
> > +
> > + /* DP PHY PLL 27MHz configuration */
> > + index = link_rate_index(link_rate);
> > + for (i = 0; i < ARRAY_SIZE(phy_pll_27m_cfg); i++)
> > + cdns_phy_reg_write(cdns_phy, phy_pll_27m_cfg[i].addr,
> > + phy_pll_27m_cfg[i].val[index]);
> > +
> > + /* Transceiver control and diagnostic registers */
> > + for (k = 0; k < num_lanes; k++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> (XCVR_DIAG_PLLDRC_CTRL | (k << 9)));
> > + val = val & 0x8FFF;
> > + if (link_rate <= RATE_2_7)
> > + val |= 0x2000;
> > + else
> > + val |= 0x1000;
> > + cdns_phy_reg_write(cdns_phy,
> (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val);
> > + }
> > +
> > + for (k = 0; k < num_lanes; k = k + 1) {
> > + /* Power state machine registers */
> > + cdns_phy_reg_write(cdns_phy, (XCVR_PSM_RCTRL | (k <<
> 9)), 0xBEFC);
> > + cdns_phy_reg_write(cdns_phy, (TX_PSC_A0 | (k << 9)),
> 0x6799);
> > + cdns_phy_reg_write(cdns_phy, (TX_PSC_A1 | (k << 9)),
> 0x6798);
> > + cdns_phy_reg_write(cdns_phy, (TX_PSC_A2 | (k << 9)),
> 0x0098);
> > + cdns_phy_reg_write(cdns_phy, (TX_PSC_A3 | (k << 9)),
> 0x0098);
> > + /* Receiver calibration power state definition register */
> > + val = cdns_phy_reg_read(cdns_phy, RX_PSC_CAL | (k <<
> 9));
> > + val &= 0xFFBB;
> > + cdns_phy_reg_write(cdns_phy, (RX_PSC_CAL | (k << 9)),
> val);
> > + val = cdns_phy_reg_read(cdns_phy, RX_PSC_A0 | (k <<
> 9));
> > + val &= 0xFFBB;
> > + cdns_phy_reg_write(cdns_phy, (RX_PSC_A0 | (k << 9)),
> val);
> > + }
> > +}
> > +
> > +static void hdptx_dp_phy_ref_clock_type(struct cdns_hdptx_dp_phy
> > +*cdns_phy) {
> > + u32 val;
> > +
> > + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> > + val &= 0xFF8F;
> > + /*
> > + * single ended reference clock (val |= 0x0030);
> > + * differential clock (val |= 0x0000);
> > + *
> > + * for differential clock on the refclk_p and
> > + * refclk_m off chip pins: CMN_DIAG_ACYA[8]=1'b1
> > + * cdns_phy_reg_write(cdns_phy, CMN_DIAG_ACYA, 0x0100);
> > + */
> > + val |= 0x0030;
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val); }
> > +
> > +static int hdptx_dp_phy_power_up(struct cdns_hdptx_dp_phy *cdns_phy)
> > +{
> > + u32 val, i;
> > +
> > + /* Enable HDP PLL’s for high speed clocks */
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + val |= (1 << 0);
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> > + /* Wait for PLL ready ACK */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + if (val & (1 << 1))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait PLL Ack failed\n");
> > + return -1;
> > + }
> > +
> > + /* Enable HDP PLL’s data rate and full rate clocks out of PMA. */
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + val |= (1 << 2);
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> > + /* Wait for PLL clock enable ACK */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + if (val & (1 << 3))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait PLL clock enable ACk
> failed\n");
> > + return -1;
> > + }
> > +
> > + /* Configure PHY in A2 Mode */
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0004);
> > + /* Wait for Power State A2 Ack */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> PHY_HDP_MODE_CTRL);
> > + if (val & (1 << 6))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait A2 Ack failed\n");
> > + return -1;
> > + }
> > +
> > + /* Configure PHY in A0 mode (PHY must be in the A0 power
> > + * state in order to transmit data)
> > + */
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0101);
> > +
> > + /* Wait for Power State A0 Ack */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> PHY_HDP_MODE_CTRL);
> > + if (val & (1 << 4))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait A0 Ack failed\n");
> > + return -1;
> > + }
> > +
> > + cdns_phy->power_up = true;
> > +
> > + return 0;
> > +}
> > +
> > +static void hdptx_dp_phy_power_down(struct cdns_hdptx_dp_phy
> > +*cdns_phy) {
> > + u16 val;
> > + int i;
> > +
> > + if (!cdns_phy->power_up)
> > + return;
> > +
> > + /* Place the PHY lanes in the A3 power state. */
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x8);
> > + /* Wait for Power State A3 Ack */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> PHY_HDP_MODE_CTRL);
> > + if (val & (1 << 7))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait A3 Ack failed\n");
> > + return;
> > + }
> > +
> > + /* Disable HDP PLL’s data rate and full rate clocks out of PMA. */
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + val &= ~(1 << 2);
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> > + /* Wait for PLL clock gate ACK */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + if (!(val & (1 << 3)))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait PLL clock gate Ack
> failed\n");
> > + return;
> > + }
> > +
> > + /* Disable HDP PLL’s for high speed clocks */
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + val &= ~(1 << 0);
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> > + /* Wait for PLL disable ACK */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + if (!(val & (1 << 1)))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait PLL disable Ack failed\n");
> > + return;
> > + }
> > +}
> > +
> > +static int cdns_hdptx_dp_phy_on(struct phy *phy) {
> > + struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
> > +
> > + return hdptx_dp_phy_power_up(cdns_phy); }
> > +
> > +static int cdns_hdptx_dp_phy_off(struct phy *phy) {
> > + struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
> > +
> > + hdptx_dp_phy_power_down(cdns_phy);
> > +
> > + return 0;
> > +}
> > +
> > +static int cdns_hdptx_dp_phy_init(struct phy *phy) {
> > + struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
> > + int ret;
> > +
> > + hdptx_dp_phy_ref_clock_type(cdns_phy);
> > +
> > + /* PHY power up */
> > + ret = hdptx_dp_phy_power_up(cdns_phy);
> > + if (ret < 0)
> > + return ret;
> > +
> > + hdptx_dp_aux_cfg(cdns_phy);
> > +
> > + return ret;
> > +}
> > +
> > +static int cdns_hdptx_dp_configure(struct phy *phy,
> > + union phy_configure_opts *opts)
> {
> > + struct cdns_hdptx_dp_phy *cdns_phy = phy_get_drvdata(phy);
> > + int ret;
> > +
> > + cdns_phy->link_rate = opts->dp.link_rate;
> > + cdns_phy->num_lanes = opts->dp.lanes;
> > +
> > + if (cdns_phy->link_rate > MAX_LINK_RATE) {
> > + dev_err(cdns_phy->dev, "Link Rate(%d) Not supported\n",
> cdns_phy->link_rate);
> > + return false;
> > + }
> > +
> > + /* Disable phy clock if PHY in power up state */
> > + hdptx_dp_phy_power_down(cdns_phy);
> > +
> > + if (cdns_phy->ref_clk_rate == REF_CLK_27MHZ) {
> > + hdptx_dp_phy_pma_cmn_cfg_27mhz(cdns_phy);
> > + hdptx_dp_phy_pma_cmn_pll0_27mhz(cdns_phy);
> > + } else
> > + dev_err(cdns_phy->dev, "Not support ref clock rate\n");
> > +
> > + /* PHY power up */
> > + ret = hdptx_dp_phy_power_up(cdns_phy);
> > +
> > + return ret;
> > +}
> > +
> > +static const struct phy_ops cdns_hdptx_dp_phy_ops = {
> > + .init = cdns_hdptx_dp_phy_init,
> > + .configure = cdns_hdptx_dp_configure,
> > + .power_on = cdns_hdptx_dp_phy_on,
> > + .power_off = cdns_hdptx_dp_phy_off,
> > + .owner = THIS_MODULE,
> > +};
> > +
> > +static int cdns_hdptx_dp_phy_probe(struct platform_device *pdev) {
> > + struct cdns_hdptx_dp_phy *cdns_phy;
> > + struct device *dev = &pdev->dev;
> > + struct device_node *node = dev->of_node;
> > + struct phy_provider *phy_provider;
> > + struct resource *res;
> > + struct phy *phy;
> > + int ret;
> > +
> > + cdns_phy = devm_kzalloc(dev, sizeof(*cdns_phy), GFP_KERNEL);
> > + if (!cdns_phy)
> > + return -ENOMEM;
> > +
> > + dev_set_drvdata(dev, cdns_phy);
> > + cdns_phy->dev = dev;
> > + mutex_init(&cdns_phy->mbox_mutex);
> > +
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + if (!res)
> > + return -ENODEV;
> > + cdns_phy->regs = devm_ioremap(dev, res->start,
> resource_size(res));
> > + if (IS_ERR(cdns_phy->regs))
> > + return PTR_ERR(cdns_phy->regs);
> > +
> > + phy = devm_phy_create(dev, node, &cdns_hdptx_dp_phy_ops);
> > + if (IS_ERR(phy))
> > + return PTR_ERR(phy);
> > +
> > + phy->attrs.mode = PHY_MODE_DP;
> > + cdns_phy->phy = phy;
> > + phy_set_drvdata(phy, cdns_phy);
> > +
> > + ret = hdptx_dp_clk_enable(cdns_phy);
> > + if (ret) {
> > + dev_err(dev, "Init clk fail\n");
> > + return -EINVAL;
> > + }
> > +
> > + phy_provider = devm_of_phy_provider_register(dev,
> of_phy_simple_xlate);
> > + if (IS_ERR(phy_provider)) {
> > + ret = PTR_ERR(phy_provider);
> > + goto clk_disable;
> > + }
> > +
> > + return 0;
> > +
> > +clk_disable:
> > + hdptx_dp_clk_disable(cdns_phy);
> > +
> > + return -EINVAL;
> > +}
> > +
> > +static int cdns_hdptx_dp_phy_remove(struct platform_device *pdev) {
> > + struct cdns_hdptx_dp_phy *cdns_phy =
> platform_get_drvdata(pdev);
> > +
> > + hdptx_dp_clk_disable(cdns_phy);
> > +
> > + return 0;
> > +}
> > +
> > +static const struct of_device_id cdns_hdptx_dp_phy_of_match[] = {
> > + {.compatible = "fsl,imx8mq-dp-phy" },
> > + { /* sentinel */ }
> > +};
> > +MODULE_DEVICE_TABLE(of, cdns_hdptx_dp_phy_of_match);
> > +
> > +static struct platform_driver cdns_hdptx_dp_phy_driver = {
> > + .probe = cdns_hdptx_dp_phy_probe,
> > + .remove = cdns_hdptx_dp_phy_remove,
> > + .driver = {
> > + .name = "cdns-hdptx-dp-phy",
> > + .of_match_table = cdns_hdptx_dp_phy_of_match,
> > + }
> > +};
> > +module_platform_driver(cdns_hdptx_dp_phy_driver);
> > +
> > +MODULE_AUTHOR("Sandor Yu <[email protected]>");
> > +MODULE_DESCRIPTION("Cadence HDP-TX DisplayPort PHY driver");
> > +MODULE_LICENSE("GPL");
> > --
> > 2.34.1
>
> --
> ~Vinod
B.R
Sandor
Hi Vinod,
Thanks for your comments,
> -----Original Message-----
> From: Vinod Koul <[email protected]>
> Sent: 2023??6??21?? 19:58
> To: Sandor Yu <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; dl-linux-imx
> <[email protected]>; Oliver Brown <[email protected]>
> Subject: [EXT] Re: [PATCH v6 8/8] phy: freescale: Add HDMI PHY driver for
> i.MX8MQ
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> On 15-06-23, 09:38, Sandor Yu wrote:
> > Add Cadence HDP-TX HDMI PHY driver for i.MX8MQ.
> >
> > Cadence HDP-TX PHY could be put in either DP mode or HDMI mode base
> on
> > the configuration chosen.
> > HDMI PHY mode is configurated in the driver.
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > drivers/phy/freescale/Kconfig | 9 +
> > drivers/phy/freescale/Makefile | 1 +
> > drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c | 889
> > ++++++++++++++++++++
> > 3 files changed, 899 insertions(+)
> > create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
> >
> > diff --git a/drivers/phy/freescale/Kconfig
> > b/drivers/phy/freescale/Kconfig index a99ee370eda6..e007e15e503a
> > 100644
> > --- a/drivers/phy/freescale/Kconfig
> > +++ b/drivers/phy/freescale/Kconfig
> > @@ -44,6 +44,15 @@ config PHY_CADENCE_DP_PHY
> > Enable this to support the Cadence HDPTX DP PHY driver
> > on NXP's i.MX8MQ SOC.
> >
> > +config PHY_CADENCE_HDMI_PHY
> > + tristate "Cadence HDPTX HDMI PHY Driver"
> > + depends on OF && HAS_IOMEM
> > + depends on COMMON_CLK
> > + select GENERIC_PHY
> > + help
> > + Enable this to support the Cadence HDPTX HDMI PHY driver.
> > + on NXP's i.MX8MQ SOC.
> > +
> > endif
> >
> > config PHY_FSL_LYNX_28G
> > diff --git a/drivers/phy/freescale/Makefile
> > b/drivers/phy/freescale/Makefile index c3bdf3fa2e72..d25fafd91c53
> > 100644
> > --- a/drivers/phy/freescale/Makefile
> > +++ b/drivers/phy/freescale/Makefile
> > @@ -5,3 +5,4 @@ obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) +=
> phy-fsl-imx8-mipi-dphy.o
> > obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o
> > obj-$(CONFIG_PHY_FSL_LYNX_28G) +=
> phy-fsl-lynx-28g.o
> > obj-$(CONFIG_PHY_CADENCE_DP_PHY) += phy-fsl-imx8mq-dp.o
> > +obj-$(CONFIG_PHY_CADENCE_HDMI_PHY) += phy-fsl-imx8mq-hdmi.o
>
> Pls sort alphabetically (both Kconfig and Makefile)
OK, and the name will be change to CONFIG_PHY_FSL_IMX8MQ_HDMI_PHY and CONFIG_PHY_FSL_IMX8MQ_DP_PHY.
in the next version.
>
>
> > diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
> > b/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
> > new file mode 100644
> > index 000000000000..65aeb9835bb9
> > --- /dev/null
> > +++ b/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
> > @@ -0,0 +1,889 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * Cadence High-Definition Multimedia Interface (HDMI) PHY driver
> > + *
> > + * Copyright (C) 2022 NXP Semiconductor, Inc.
> > + */
> > +#include <asm/unaligned.h>
> > +#include <linux/clk.h>
> > +#include <linux/kernel.h>
> > +#include <linux/phy/phy.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/io.h>
> > +
> > +#include <drm/bridge/cdns-mhdp-mailbox.h>
> > +
> > +#define ADDR_PHY_AFE 0x80000
> > +/* PHY registers */
> > +#define CMN_SSM_BIAS_TMR 0x0022
> > +#define CMN_PLLSM0_USER_DEF_CTRL 0x002F
> > +#define CMN_PSM_CLK_CTRL 0x0061
> > +#define CMN_CDIAG_REFCLK_CTRL 0x0062
> > +#define CMN_PLL0_VCOCAL_START 0x0081
> > +#define CMN_PLL0_VCOCAL_INIT_TMR 0x0084
> > +#define CMN_PLL0_VCOCAL_ITER_TMR 0x0085
> > +#define CMN_TXPUCAL_CTRL 0x00E0
> > +#define CMN_TXPDCAL_CTRL 0x00F0
> > +#define CMN_TXPU_ADJ_CTRL 0x0108
> > +#define CMN_TXPD_ADJ_CTRL 0x010c
> > +#define CMN_DIAG_PLL0_FBH_OVRD 0x01C0
> > +#define CMN_DIAG_PLL0_FBL_OVRD 0x01C1
> > +#define CMN_DIAG_PLL0_OVRD 0x01C2
> > +#define CMN_DIAG_PLL0_TEST_MODE 0x01C4
> > +#define CMN_DIAG_PLL0_V2I_TUNE 0x01C5
> > +#define CMN_DIAG_PLL0_CP_TUNE 0x01C6
> > +#define CMN_DIAG_PLL0_LF_PROG 0x01C7
> > +#define CMN_DIAG_PLL0_PTATIS_TUNE1 0x01C8
> > +#define CMN_DIAG_PLL0_PTATIS_TUNE2 0x01C9
> > +#define CMN_DIAG_PLL0_INCLK_CTRL 0x01CA
> > +#define CMN_DIAG_PLL0_PXL_DIVH 0x01CB
> > +#define CMN_DIAG_PLL0_PXL_DIVL 0x01CC
> > +#define CMN_DIAG_HSCLK_SEL 0x01E0
> > +#define XCVR_PSM_RCTRL 0x4001
> > +#define TX_TXCC_CAL_SCLR_MULT_0 0x4047
> > +#define TX_TXCC_CPOST_MULT_00_0 0x404C
> > +#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
> > +#define XCVR_DIAG_PLLDRC_CTRL 0x40E0
> > +#define XCVR_DIAG_HSCLK_SEL 0x40E1
> > +#define XCVR_DIAG_BIDI_CTRL 0x40E8
> > +#define TX_PSC_A0 0x4100
> > +#define TX_PSC_A1 0x4101
> > +#define TX_PSC_A2 0x4102
> > +#define TX_PSC_A3 0x4103
> > +#define TX_DIAG_TX_CTRL 0x41E0
> > +#define TX_DIAG_TX_DRV 0x41E1
> > +#define TX_DIAG_BGREF_PREDRV_DELAY 0x41E7
> > +#define TX_DIAG_ACYA_0 0x41FF
> > +#define TX_DIAG_ACYA_1 0x43FF
> > +#define TX_DIAG_ACYA_2 0x45FF
> > +#define TX_DIAG_ACYA_3 0x47FF
> > +#define TX_ANA_CTRL_REG_1 0x5020
> > +#define TX_ANA_CTRL_REG_2 0x5021
> > +#define TX_DIG_CTRL_REG_2 0x5024
> > +#define TXDA_CYA_AUXDA_CYA 0x5025
> > +#define TX_ANA_CTRL_REG_3 0x5026
> > +#define TX_ANA_CTRL_REG_4 0x5027
> > +#define TX_ANA_CTRL_REG_5 0x5029
> > +#define RX_PSC_A0 0x8000
> > +#define RX_PSC_CAL 0x8006
> > +#define PHY_HDP_MODE_CTRL 0xC008
> > +#define PHY_HDP_CLK_CTL 0xC009
> > +#define PHY_ISO_CMN_CTRL 0xC010
> > +#define PHY_PMA_CMN_CTRL1 0xC800
> > +#define PHY_PMA_ISO_CMN_CTRL 0xC810
> > +#define PHY_PMA_ISO_PLL_CTRL1 0xC812
> > +#define PHY_PMA_ISOLATION_CTRL 0xC81F
> > +
> > +#define REF_CLK_27MHZ 27000000
>
> This looks similar to patch 7, how different are these two..?
In fact, patch 8 and patch 7 are the same IP, but run the different firmware.
HDMI PHY and DP PHY are share less registers, and totally different PLL work mode.
Use separate driver for HDMI and DP PHY is easy to maintain the source code.
>
> > +
> > +/* HDMI TX clock control settings */
> > +struct hdptx_hdmi_ctrl {
> > + u32 pixel_clk_freq_min;
> > + u32 pixel_clk_freq_max;
> > + u32 feedback_factor;
> > + u32 data_range_kbps_min;
> > + u32 data_range_kbps_max;
> > + u32 cmnda_pll0_ip_div;
> > + u32 cmn_ref_clk_dig_div;
> > + u32 ref_clk_divider_scaler;
> > + u32 pll_fb_div_total;
> > + u32 cmnda_pll0_fb_div_low;
> > + u32 cmnda_pll0_fb_div_high;
> > + u32 pixel_div_total;
> > + u32 cmnda_pll0_pxdiv_low;
> > + u32 cmnda_pll0_pxdiv_high;
> > + u32 vco_freq_min;
> > + u32 vco_freq_max;
> > + u32 vco_ring_select;
> > + u32 cmnda_hs_clk_0_sel;
> > + u32 cmnda_hs_clk_1_sel;
> > + u32 hsclk_div_at_xcvr;
> > + u32 hsclk_div_tx_sub_rate;
> > + u32 cmnda_pll0_hs_sym_div_sel;
> > + u32 cmnda_pll0_clk_freq_min;
> > + u32 cmnda_pll0_clk_freq_max;
> > +};
> > +
> > +struct cdns_hdptx_hdmi_phy {
> > + void __iomem *regs; /* DPTX registers base */
> > + struct mutex mbox_mutex; /* mutex to protect mailbox */
> > + struct device *dev;
> > + struct phy *phy;
> > + struct clk *ref_clk, *apb_clk;
> > + u32 ref_clk_rate;
> > + u32 pixel_clk_rate;
> > + enum hdmi_phy_colorspace color_space;
> > + u32 bpc;
> > +};
> > +
> > +/* HDMI TX clock control settings, pixel clock is output */ static
> > +const struct hdptx_hdmi_ctrl pixel_clk_output_ctrl_table[] = {
> > +/*Minclk Maxclk Fdbak DR_min DR_max ip_d dig DS Totl
> */
> > +{ 27000, 27000, 1000, 270000, 270000, 0x03, 0x1, 0x1, 240, 0x0BC,
> > +0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x3,
> > +27000, 27000}, { 27000, 27000, 1250, 337500, 337500, 0x03, 0x1,
> > +0x1, 300, 0x0EC, 0x03C, 100, 0x030, 0x030, 2700000, 2700000, 0, 2,
> > +2, 2, 4, 0x3, 33750, 33750}, { 27000, 27000, 1500, 405000,
> > +405000, 0x03, 0x1, 0x1, 360, 0x11C, 0x048, 120, 0x03A, 0x03A,
> > +3240000, 3240000, 0, 2, 2, 2, 4, 0x3, 40500, 40500}, { 27000,
> > +27000, 2000, 540000, 540000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030,
> > +80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x2, 54000,
> > +54000}, { 54000, 54000, 1000, 540000, 540000, 0x03, 0x1, 0x1,
> > +480, 0x17C, 0x060, 80, 0x026, 0x026, 4320000, 4320000, 1, 2, 2, 2,
> > +4, 0x3, 54000, 54000}, { 54000, 54000, 1250, 675000, 675000,
> > +0x04, 0x1, 0x1, 400, 0x13C, 0x050, 50, 0x017, 0x017, 2700000,
> > +2700000, 0, 1, 1, 2, 4, 0x2, 67500, 67500}, { 54000, 54000, 1500,
> > +810000, 810000, 0x04, 0x1, 0x1, 480, 0x17C, 0x060, 60, 0x01C,
> > +0x01C, 3240000, 3240000, 0, 2, 2, 2, 2, 0x2, 81000, 81000}, {
> > +54000, 54000, 2000, 1080000, 1080000, 0x03, 0x1, 0x1, 240, 0x0BC,
> > +0x030, 40, 0x012, 0x012, 2160000, 2160000, 0, 2, 2, 2, 1, 0x1,
> > +108000, 108000}, { 74250, 74250, 1000, 742500, 742500, 0x03, 0x1,
> > +0x1, 660, 0x20C, 0x084, 80, 0x026, 0x026, 5940000, 5940000, 1, 2,
> > +2, 2, 4, 0x3, 74250, 74250}, { 74250, 74250, 1250, 928125,
> > +928125, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 50, 0x017, 0x017,
> > +3712500, 3712500, 1, 1, 1, 2, 4, 0x2, 92812, 92812}, { 74250,
> > +74250, 1500, 1113750, 1113750, 0x04, 0x1, 0x1, 660, 0x20C, 0x084,
> > +60, 0x01C, 0x01C, 4455000, 4455000, 1, 2, 2, 2, 2, 0x2, 111375,
> > +111375}, { 74250, 74250, 2000, 1485000, 1485000, 0x03, 0x1, 0x1,
> > +330, 0x104, 0x042, 40, 0x012, 0x012, 2970000, 2970000, 0, 2, 2, 2,
> > +1, 0x1, 148500, 148500}, { 99000, 99000, 1000, 990000, 990000,
> > +0x03, 0x1, 0x1, 440, 0x15C, 0x058, 40, 0x012, 0x012, 3960000,
> > +3960000, 1, 2, 2, 2, 2, 0x2, 99000, 99000}, { 99000, 99000, 1250,
> > +1237500, 1237500, 0x03, 0x1, 0x1, 275, 0x0D8, 0x037, 25, 0x00B,
> > +0x00A, 2475000, 2475000, 0, 1, 1, 2, 2, 0x1, 123750, 123750}, {
> > +99000, 99000, 1500, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104,
> > +0x042, 30, 0x00D, 0x00D, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1,
> > +148500, 148500}, { 99000, 99000, 2000, 1980000, 1980000, 0x03, 0x1,
> > +0x1, 440, 0x15C, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2,
> > +2, 2, 1, 0x1, 198000, 198000}, {148500, 148500, 1000, 1485000,
> > +1485000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 40, 0x012, 0x012,
> > +5940000, 5940000, 1, 2, 2, 2, 2, 0x2, 148500, 148500}, {148500,
> > +148500, 1250, 1856250, 1856250, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E,
> > +25, 0x00B, 0x00A, 3712500, 3712500, 1, 1, 1, 2, 2, 0x1, 185625,
> > +185625}, {148500, 148500, 1500, 2227500, 2227500, 0x03, 0x1, 0x1,
> > +495, 0x188, 0x063, 30, 0x00D, 0x00D, 4455000, 4455000, 1, 1, 1, 2,
> > +2, 0x1, 222750, 222750}, {148500, 148500, 2000, 2970000, 2970000,
> > +0x03, 0x1, 0x1, 660, 0x20C, 0x084, 40, 0x012, 0x012, 5940000,
> > +5940000, 1, 2, 2, 2, 1, 0x1, 297000, 297000}, {198000, 198000, 1000,
> > +1980000, 1980000, 0x03, 0x1, 0x1, 220, 0x0AC, 0x02C, 10, 0x003,
> > +0x003, 1980000, 1980000, 0, 1, 1, 2, 1, 0x0, 198000, 198000},
> > +{198000, 198000, 1250, 2475000, 2475000, 0x03, 0x1, 0x1, 550, 0x1B4,
> > +0x06E, 25, 0x00B, 0x00A, 4950000, 4950000, 1, 1, 1, 2, 2, 0x1,
> > +247500, 247500}, {198000, 198000, 1500, 2970000, 2970000, 0x03, 0x1,
> > +0x1, 330, 0x104, 0x042, 15, 0x006, 0x005, 2970000, 2970000, 0, 1,
> > +1, 2, 1, 0x0, 297000, 297000}, {198000, 198000, 2000, 3960000,
> > +3960000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 20, 0x008, 0x008,
> > +3960000, 3960000, 1, 1, 1, 2, 1, 0x0, 396000, 396000}, {297000,
> > +297000, 1000, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042,
> > +10, 0x003, 0x003, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000,
> > +297000}, {297000, 297000, 1500, 4455000, 4455000, 0x03, 0x1, 0x1,
> > +495, 0x188, 0x063, 15, 0x006, 0x005, 4455000, 4455000, 1, 1, 1, 2,
> > +1, 0x0, 445500, 445500}, {297000, 297000, 2000, 5940000, 5940000,
> > +0x03, 0x1, 0x1, 660, 0x20C, 0x084, 20, 0x008, 0x008, 5940000,
> > +5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000}, {594000, 594000, 1000,
> > +5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 10, 0x003,
> > +0x003, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
> > +{594000, 594000, 750, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188,
> > +0x063, 10, 0x003, 0x003, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0,
> > +445500, 445500}, {594000, 594000, 625, 3712500, 3712500, 0x04, 0x1,
> > +0x1, 550, 0x1B4, 0x06E, 10, 0x003, 0x003, 3712500, 3712500, 1, 1,
> > +1, 2, 1, 0x0, 371250, 371250}, {594000, 594000, 500, 2970000,
> > +2970000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 10, 0x003, 0x003,
> > +5940000, 5940000, 1, 1, 1, 2, 2, 0x1, 297000, 297000}, };
> > +
> > +/* HDMI TX PLL tuning settings */
> > +struct hdptx_hdmi_pll_tuning {
> > + u32 vco_freq_bin;
> > + u32 vco_freq_min;
> > + u32 vco_freq_max;
> > + u32 volt_to_current_coarse;
> > + u32 volt_to_current;
> > + u32 ndac_ctrl;
> > + u32 pmos_ctrl;
> > + u32 ptat_ndac_ctrl;
> > + u32 feedback_div_total;
> > + u32 charge_pump_gain;
> > + u32 coarse_code;
> > + u32 v2i_code;
> > + u32 vco_cal_code;
> > +};
> > +
> > +/* HDMI TX PLL tuning settings, pixel clock is output */ static const
> > +struct hdptx_hdmi_pll_tuning pixel_clk_output_pll_table[] = { /*bin
> > +VCO_freq min/max coar cod NDAC PMOS PTAT div-T P-Gain Coa V2I
> CAL
> > +*/ { 1, 1980000, 1980000, 0x4, 0x3, 0x0, 0x09, 0x09, 220, 0x42, 160,
> > +5, 183 }, { 2, 2160000, 2160000, 0x4, 0x3, 0x0, 0x09, 0x09, 240,
> > +0x42, 166, 6, 208 }, { 3, 2475000, 2475000, 0x5, 0x3, 0x1, 0x00,
> > +0x07, 275, 0x42, 167, 6, 209 }, { 4, 2700000, 2700000, 0x5, 0x3,
> > +0x1, 0x00, 0x07, 300, 0x42, 188, 6, 230 }, { 4, 2700000, 2700000,
> > +0x5, 0x3, 0x1, 0x00, 0x07, 400, 0x4C, 188, 6, 230 }, { 5, 2970000,
> > +2970000, 0x6, 0x3, 0x1, 0x00, 0x07, 330, 0x42, 183, 6, 225 }, { 6,
> > +3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 360, 0x42, 203, 7, 256
> > +}, { 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 480, 0x4C, 203,
> > +7, 256 }, { 7, 3712500, 3712500, 0x4, 0x3, 0x0, 0x07, 0x0F, 550,
> > +0x4C, 212, 7, 257 }, { 8, 3960000, 3960000, 0x5, 0x3, 0x0, 0x07,
> > +0x0F, 440, 0x42, 184, 6, 226 }, { 9, 4320000, 4320000, 0x5, 0x3,
> > +0x1, 0x07, 0x0F, 480, 0x42, 205, 7, 258 }, { 10, 4455000, 4455000,
> > +0x5, 0x3, 0x0, 0x07, 0x0F, 495, 0x42, 219, 7, 272 }, { 10, 4455000,
> > +4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 660, 0x4C, 219, 7, 272 }, { 11,
> > +4950000, 4950000, 0x6, 0x3, 0x1, 0x00, 0x07, 550, 0x42, 213, 7, 258
> > +}, { 12, 5940000, 5940000, 0x7, 0x3, 0x1, 0x00, 0x07, 660, 0x42, 244,
> > +8, 292 }, };
> > +
> > +static int cdns_phy_reg_write(struct cdns_hdptx_hdmi_phy *cdns_phy,
> > +u32 addr, u32 val) {
> > + return cdns_mhdp_reg_write(cdns_phy, ADDR_PHY_AFE + (addr <<
> 2),
> > +val); }
> > +
> > +static u32 cdns_phy_reg_read(struct cdns_hdptx_hdmi_phy *cdns_phy,
> > +u32 addr) {
> > + u32 reg32;
> > +
> > + cdns_mhdp_reg_read(cdns_phy, ADDR_PHY_AFE + (addr << 2),
> > + ®32);
> > +
> > + return reg32;
> > +}
> > +
> > +#define KEEP_ALIVE 0x18
> > +static bool hdptx_phy_check_alive(struct cdns_hdptx_hdmi_phy
> > +*cdns_phy) {
> > + u32 alive, newalive;
> > + u8 retries_left = 50;
> > +
> > + alive = readl(cdns_phy->regs + KEEP_ALIVE);
> > +
> > + while (retries_left--) {
> > + udelay(2);
> > +
> > + newalive = readl(cdns_phy->regs + KEEP_ALIVE);
> > + if (alive == newalive)
> > + continue;
> > + return true;
> > + }
> > + return false;
> > +}
> > +
> > +static int hdptx_hdmi_clk_enable(struct cdns_hdptx_hdmi_phy
> > +*cdns_phy) {
> > + struct device *dev = cdns_phy->dev;
> > + u32 ref_clk_rate;
> > + int ret;
> > +
> > + cdns_phy->ref_clk = devm_clk_get(dev, "ref");
> > + if (IS_ERR(cdns_phy->ref_clk)) {
> > + dev_err(dev, "phy ref clock not found\n");
> > + return PTR_ERR(cdns_phy->ref_clk);
> > + }
> > +
> > + cdns_phy->apb_clk = devm_clk_get(dev, "apb");
> > + if (IS_ERR(cdns_phy->apb_clk)) {
> > + dev_err(dev, "phy apb clock not found\n");
> > + return PTR_ERR(cdns_phy->apb_clk);
>
> not _put for ref_clk?
ref clock is enabled only driver probe, so it don't need to explicitly call devm_clk_put() to release the clock.
>
> > + }
> > +
> > + ret = clk_prepare_enable(cdns_phy->ref_clk);
> > + if (ret) {
> > + dev_err(cdns_phy->dev, "Failed to prepare ref clock\n");
> > + return ret;
>
> what happens to clk refs you have already taken?
Same as above reason.
>
> > + }
> > +
> > + ref_clk_rate = clk_get_rate(cdns_phy->ref_clk);
> > + if (!ref_clk_rate) {
> > + dev_err(cdns_phy->dev, "Failed to get ref clock rate\n");
> > + goto err_ref_clk;
> > + }
> > +
> > + if (ref_clk_rate == REF_CLK_27MHZ)
> > + cdns_phy->ref_clk_rate = ref_clk_rate;
> > + else {
> > + dev_err(cdns_phy->dev, "Not support Ref Clock
> Rate(%dHz)\n", ref_clk_rate);
> > + goto err_ref_clk;
> > + }
> > +
> > + ret = clk_prepare_enable(cdns_phy->apb_clk);
> > + if (ret) {
> > + dev_err(cdns_phy->dev, "Failed to prepare apb clock\n");
> > + goto err_ref_clk;
> > + }
> > +
> > + return 0;
> > +
> > +err_ref_clk:
> > + clk_disable_unprepare(cdns_phy->ref_clk);
> > + return -EINVAL;
> > +}
> > +
> > +static void hdptx_hdmi_clk_disable(struct cdns_hdptx_hdmi_phy
> > +*cdns_phy) {
> > + clk_disable_unprepare(cdns_phy->ref_clk);
> > + clk_disable_unprepare(cdns_phy->apb_clk);
> > +}
> > +
> > +static void hdptx_hdmi_arc_config(struct cdns_hdptx_hdmi_phy
> > +*cdns_phy) {
> > + u16 txpu_calib_code;
> > + u16 txpd_calib_code;
> > + u16 txpu_adj_calib_code;
> > + u16 txpd_adj_calib_code;
> > + u16 prev_calib_code;
> > + u16 new_calib_code;
> > + u16 rdata;
> > +
> > + /* Power ARC */
> > + cdns_phy_reg_write(cdns_phy, TXDA_CYA_AUXDA_CYA, 0x0001);
> > +
> > + prev_calib_code = cdns_phy_reg_read(cdns_phy,
> TX_DIG_CTRL_REG_2);
> > + txpu_calib_code = cdns_phy_reg_read(cdns_phy,
> CMN_TXPUCAL_CTRL);
> > + txpd_calib_code = cdns_phy_reg_read(cdns_phy,
> CMN_TXPDCAL_CTRL);
> > + txpu_adj_calib_code = cdns_phy_reg_read(cdns_phy,
> CMN_TXPU_ADJ_CTRL);
> > + txpd_adj_calib_code = cdns_phy_reg_read(cdns_phy,
> > + CMN_TXPD_ADJ_CTRL);
> > +
> > + new_calib_code = ((txpu_calib_code + txpd_calib_code) / 2)
> > + + txpu_adj_calib_code + txpd_adj_calib_code;
> > +
> > + if (new_calib_code != prev_calib_code) {
> > + rdata = cdns_phy_reg_read(cdns_phy,
> TX_ANA_CTRL_REG_1);
> > + rdata &= 0xDFFF;
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1,
> rdata);
> > + cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_2,
> new_calib_code);
> > + mdelay(10);
> > + rdata |= 0x2000;
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1,
> rdata);
> > + udelay(150);
> > + }
> > +
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0100);
> > + udelay(100);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0300);
> > + udelay(100);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_3, 0x0000);
> > + udelay(100);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2008);
> > + udelay(100);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2018);
> > + udelay(100);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2098);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030C);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_5, 0x0010);
> > + udelay(100);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_4, 0x4001);
> > + mdelay(5);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2198);
> > + mdelay(5);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030D);
> > + udelay(100);
> > + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030F); }
> > +
> > +static void hdptx_hdmi_phy_set_vswing(struct cdns_hdptx_hdmi_phy
> > +*cdns_phy) {
> > + u32 k;
> > + const u32 num_lanes = 4;
> > +
> > + for (k = 0; k < num_lanes; k++) {
> > + cdns_phy_reg_write(cdns_phy, (TX_DIAG_TX_DRV | (k <<
> 9)), 0x7c0);
> > + cdns_phy_reg_write(cdns_phy,
> (TX_TXCC_CPOST_MULT_00_0 | (k << 9)), 0x0);
> > + cdns_phy_reg_write(cdns_phy,
> (TX_TXCC_CAL_SCLR_MULT_0 |
> > + (k << 9)), 0x120);
>
> magic numbers?
The values are the debug result for imx8mq to pass hdmi HDMI CTS.
And we haven??t found the value should be modify for different imx8mq platform.
>
> > + }
> > +}
> > +
> > +static int hdptx_hdmi_feedback_factor(struct cdns_hdptx_hdmi_phy
> > +*cdns_phy) {
> > + u32 feedback_factor;
> > +
> > + switch (cdns_phy->color_space) {
> > + case HDMI_PHY_COLORSPACE_YUV422:
> > + feedback_factor = 1000;
> > + break;
>
> empty line after each case please
OK.
>
> > + case HDMI_PHY_COLORSPACE_YUV420:
> > + switch (cdns_phy->bpc) {
> > + case 8:
> > + feedback_factor = 500;
> > + break;
> > + case 10:
> > + feedback_factor = 625;
> > + break;
> > + case 12:
> > + feedback_factor = 750;
> > + break;
> > + case 16:
> > + feedback_factor = 1000;
> > + break;
> > + default:
> > + dev_dbg(cdns_phy->dev, "Invalid
> ColorDepth\n");
> > + return 0;
> > + }
> > + break;
> > + default:
> > + /* Assume RGB/YUV444 */
> > + switch (cdns_phy->bpc) {
> > + case 10:
> > + feedback_factor = 1250;
> > + break;
> > + case 12:
> > + feedback_factor = 1500;
> > + break;
> > + case 16:
> > + feedback_factor = 2000;
> > + break;
> > + default:
> > + feedback_factor = 1000;
> > + }
> > + }
> > +
> > + return feedback_factor;
> > +}
> > +
> > +static int hdptx_hdmi_phy_config(struct cdns_hdptx_hdmi_phy *cdns_phy,
> > +
> const struct hdptx_hdmi_ctrl *p_ctrl_table,
> > +
> const struct hdptx_hdmi_pll_tuning *p_pll_table,
> > +
> char
> > +pclk_in)
>
> this looks bad, please run checkpatch --strict to align these properly
OK, I will check it with --strict.
>
> > +{
> > + const u32 num_lanes = 4;
> > + u32 val, i, k;
> > +
> > + /* enable PHY isolation mode only for CMN */
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISOLATION_CTRL,
> 0xD000);
> > +
> > + /* set cmn_pll0_clk_datart1_div/cmn_pll0_clk_datart0_div dividers
> */
> > + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_ISO_PLL_CTRL1);
> > + val &= 0xFF00;
>
> lowercase hex values everywhere pls
OK, will change it.
>
> > + val |= 0x0012;
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_PLL_CTRL1, val);
> > +
> > + /* assert PHY reset from isolation register */
> > + cdns_phy_reg_write(cdns_phy, PHY_ISO_CMN_CTRL, 0x0000);
> > + /* assert PMA CMN reset */
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL,
> 0x0000);
> > +
> > + /* register XCVR_DIAG_BIDI_CTRL */
> > + for (k = 0; k < num_lanes; k++)
> > + cdns_phy_reg_write(cdns_phy, XCVR_DIAG_BIDI_CTRL |
> (k <<
> > + 9), 0x00FF);
> > +
> > + /* Describing Task phy_cfg_hdp */
> > +
> > + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> > + val &= 0xFFF7;
> > + val |= 0x0008;
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> > +
> > + /* PHY Registers */
> > + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> > + val &= 0xCFFF;
> > + val |= p_ctrl_table->cmn_ref_clk_dig_div << 12;
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> > +
> > + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
> > + val &= 0x00FF;
> > + val |= 0x1200;
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
> > +
> > + /* Common control module control and diagnostic registers */
> > + val = cdns_phy_reg_read(cdns_phy, CMN_CDIAG_REFCLK_CTRL);
> > + val &= 0x8FFF;
> > + val |= p_ctrl_table->ref_clk_divider_scaler << 12;
> > + val |= 0x00C0;
> > + cdns_phy_reg_write(cdns_phy, CMN_CDIAG_REFCLK_CTRL, val);
> > +
> > + /* High speed clock used */
> > + val = cdns_phy_reg_read(cdns_phy, CMN_DIAG_HSCLK_SEL);
> > + val &= 0xFF00;
> > + val |= (p_ctrl_table->cmnda_hs_clk_0_sel >> 1) << 0;
> > + val |= (p_ctrl_table->cmnda_hs_clk_1_sel >> 1) << 4;
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_HSCLK_SEL, val);
> > +
> > + for (k = 0; k < num_lanes; k++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> (XCVR_DIAG_HSCLK_SEL | (k << 9)));
> > + val &= 0xCFFF;
> > + val |= (p_ctrl_table->cmnda_hs_clk_0_sel >> 1) << 12;
> > + cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_HSCLK_SEL |
> (k << 9)), val);
> > + }
> > +
> > + /* PLL 0 control state machine registers */
> > + val = p_ctrl_table->vco_ring_select << 12;
> > + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_USER_DEF_CTRL,
> val);
> > +
> > + if (pclk_in == true)
> > + val = 0x30A0;
> > + else {
> > + val = cdns_phy_reg_read(cdns_phy,
> CMN_PLL0_VCOCAL_START);
> > + val &= 0xFE00;
> > + val |= p_pll_table->vco_cal_code;
> > + }
> > + cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_START, val);
> > +
> > + cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_INIT_TMR,
> 0x0064);
> > + cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_ITER_TMR,
> 0x000A);
> > +
> > + /* Common functions control and diagnostics registers */
> > + val = p_ctrl_table->cmnda_pll0_hs_sym_div_sel << 8;
> > + val |= p_ctrl_table->cmnda_pll0_ip_div;
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_INCLK_CTRL, val);
> > +
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_OVRD, 0x0000);
> > +
> > + val = p_ctrl_table->cmnda_pll0_fb_div_high;
> > + val |= (1 << 15);
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_FBH_OVRD, val);
> > +
> > + val = p_ctrl_table->cmnda_pll0_fb_div_low;
> > + val |= (1 << 15);
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_FBL_OVRD, val);
> > +
> > + if (pclk_in == false) {
> > + val = p_ctrl_table->cmnda_pll0_pxdiv_low;
> > + cdns_phy_reg_write(cdns_phy,
> CMN_DIAG_PLL0_PXL_DIVL,
> > + val);
> > +
> > + val = p_ctrl_table->cmnda_pll0_pxdiv_high;
> > + val |= (1 << 15);
> > + cdns_phy_reg_write(cdns_phy,
> CMN_DIAG_PLL0_PXL_DIVH, val);
> > + }
> > +
> > + val = p_pll_table->volt_to_current_coarse;
> > + val |= (p_pll_table->volt_to_current) << 4;
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_V2I_TUNE, val);
> > +
> > + val = p_pll_table->charge_pump_gain;
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_CP_TUNE, val);
> > +
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_LF_PROG,
> 0x0008);
> > +
> > + val = p_pll_table->pmos_ctrl;
> > + val |= (p_pll_table->ndac_ctrl) << 8;
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PTATIS_TUNE1,
> val);
> > +
> > + val = p_pll_table->ptat_ndac_ctrl;
> > + cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PTATIS_TUNE2,
> val);
> > +
> > + if (pclk_in == true)
> > + cdns_phy_reg_write(cdns_phy,
> CMN_DIAG_PLL0_TEST_MODE, 0x0022);
> > + else
> > + cdns_phy_reg_write(cdns_phy,
> CMN_DIAG_PLL0_TEST_MODE,
> > + 0x0020);
> > +
> > + cdns_phy_reg_write(cdns_phy, CMN_PSM_CLK_CTRL, 0x0016);
> > +
> > + /* Transceiver control and diagnostic registers */
> > + for (k = 0; k < num_lanes; k++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> (XCVR_DIAG_PLLDRC_CTRL | (k << 9)));
> > + val &= 0xBFFF;
> > + cdns_phy_reg_write(cdns_phy,
> (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val);
> > + }
> > +
> > + for (k = 0; k < num_lanes; k++) {
> > + val = cdns_phy_reg_read(cdns_phy, (TX_DIAG_TX_CTRL |
> (k << 9)));
> > + val &= 0xFF3F;
> > + val |= (p_ctrl_table->hsclk_div_tx_sub_rate >> 1) << 6;
> > + cdns_phy_reg_write(cdns_phy, (TX_DIAG_TX_CTRL | (k <<
> 9)), val);
> > + }
> > +
> > + val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
> > + val &= 0xFF8F;
> > + /*
> > + * single ended reference clock (val |= 0x0030);
> > + * differential clock (val |= 0x0000);
> > + * for differential clock on the refclk_p and
> > + * refclk_m off chip pins: CMN_DIAG_ACYA[8]=1'b1
> > + * cdns_phy_reg_write(cdns_phy, CMN_DIAG_ACYA, 0x0100);
> > + */
> > + val |= 0x0030;
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
> > +
> > + /* Deassert PHY reset */
> > + cdns_phy_reg_write(cdns_phy, PHY_ISO_CMN_CTRL, 0x0001);
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL,
> 0x0003);
> > +
> > + /* Power state machine registers */
> > + for (k = 0; k < num_lanes; k++)
> > + cdns_phy_reg_write(cdns_phy, XCVR_PSM_RCTRL | (k <<
> 9),
> > + 0xFEFC);
> > +
> > + /* Assert cmn_macro_pwr_en */
> > + cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL,
> 0x0013);
> > +
> > + /* wait for cmn_macro_pwr_en_ack */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> PHY_PMA_ISO_CMN_CTRL);
> > + if (val & (1 << 5))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "PMA output macro power up
> failed\n");
> > + return -1;
> > + }
> > +
> > + /* wait for cmn_ready */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> PHY_PMA_CMN_CTRL1);
> > + if (val & (1 << 0))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "PMA output ready failed\n");
> > + return -1;
> > + }
> > +
> > + for (k = 0; k < num_lanes; k++) {
> > + cdns_phy_reg_write(cdns_phy, TX_PSC_A0 | (k << 9),
> 0x6791);
> > + cdns_phy_reg_write(cdns_phy, TX_PSC_A1 | (k << 9),
> 0x6790);
> > + cdns_phy_reg_write(cdns_phy, TX_PSC_A2 | (k << 9),
> 0x0090);
> > + cdns_phy_reg_write(cdns_phy, TX_PSC_A3 | (k << 9),
> > + 0x0090);
> > +
> > + val = cdns_phy_reg_read(cdns_phy, RX_PSC_CAL | (k <<
> 9));
> > + val &= 0xFFBB;
> > + cdns_phy_reg_write(cdns_phy, RX_PSC_CAL | (k << 9),
> > + val);
> > +
> > + val = cdns_phy_reg_read(cdns_phy, RX_PSC_A0 | (k << 9));
> > + val &= 0xFFBB;
> > + cdns_phy_reg_write(cdns_phy, RX_PSC_A0 | (k << 9), val);
> > + }
> > + return 0;
> > +}
> > +
> > +static int hdptx_hdmi_phy_cfg(struct cdns_hdptx_hdmi_phy *cdns_phy,
> > +u32 rate) {
> > + const struct hdptx_hdmi_ctrl *p_ctrl_table;
> > + const struct hdptx_hdmi_pll_tuning *p_pll_table;
> > + const u32 refclk_freq_khz = cdns_phy->ref_clk_rate / 1000;
> > + const u8 pclk_in = false;
> > + u32 pixel_freq = rate;
> > + u32 vco_freq, char_freq;
> > + u32 div_total, feedback_factor;
> > + u32 i, ret;
> > +
> > + feedback_factor = hdptx_hdmi_feedback_factor(cdns_phy);
> > +
> > + char_freq = pixel_freq * feedback_factor / 1000;
> > +
> > + dev_dbg(cdns_phy->dev, "Pixel clock: (%d KHz), character clock: %d,
> bpc is (%0d-bit)\n",
> > + pixel_freq, char_freq, cdns_phy->bpc);
> > +
> > + /* Get right row from the ctrl_table table.
> > + * Check if 'pixel_freq_khz' value matches the PIXEL_CLK_FREQ
> column.
> > + * Consider only the rows with FEEDBACK_FACTOR column matching
> feedback_factor.
> > + */
> > + for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++) {
> > + if (feedback_factor ==
> pixel_clk_output_ctrl_table[i].feedback_factor &&
> > + pixel_freq ==
> pixel_clk_output_ctrl_table[i].pixel_clk_freq_min) {
> > + p_ctrl_table = &pixel_clk_output_ctrl_table[i];
> > + break;
> > + }
> > + }
> > + if (i == ARRAY_SIZE(pixel_clk_output_ctrl_table)) {
> > + dev_warn(cdns_phy->dev, "Pixel clk (%d KHz) not
> supported, bpc is (%0d-bit)\n",
> > + pixel_freq, cdns_phy->bpc);
> > + return 0;
> > + }
> > +
> > + div_total = p_ctrl_table->pll_fb_div_total;
> > + vco_freq = refclk_freq_khz * div_total /
> > + p_ctrl_table->cmnda_pll0_ip_div;
> > +
> > + /* Get right row from the pixel_clk_output_pll_table table.
> > + * Check if vco_freq_khz and feedback_div_total
> > + * column matching with pixel_clk_output_pll_table.
> > + */
> > + for (i = 0; i < ARRAY_SIZE(pixel_clk_output_pll_table); i++) {
> > + if (vco_freq == pixel_clk_output_pll_table[i].vco_freq_min
> &&
> > + div_total ==
> pixel_clk_output_pll_table[i].feedback_div_total) {
> > + p_pll_table = &pixel_clk_output_pll_table[i];
> > + break;
> > + }
> > + }
> > + if (i == ARRAY_SIZE(pixel_clk_output_pll_table)) {
> > + dev_warn(cdns_phy->dev, "VCO (%d KHz) not
> supported\n", vco_freq);
> > + return -1;
> > + }
> > + dev_dbg(cdns_phy->dev, "VCO frequency is (%d KHz)\n", vco_freq);
> > +
> > + ret = hdptx_hdmi_phy_config(cdns_phy, p_ctrl_table, p_pll_table,
> pclk_in);
> > + if (ret < 0)
> > + return ret;
> > +
> > + return char_freq;
> > +}
> > +
> > +static int hdptx_hdmi_phy_power_up(struct cdns_hdptx_hdmi_phy
> > +*cdns_phy) {
> > + u32 val, i;
> > +
> > + /* set Power State to A2 */
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0004);
> > +
> > + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_0, 1);
> > + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_1, 1);
> > + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_2, 1);
> > + cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_3, 1);
> > +
> > + /* Wait for Power State A2 Ack */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> PHY_HDP_MODE_CTRL);
> > + if (val & (1 << 6))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait A2 Ack failed\n");
> > + return -1;
> > + }
> > +
> > + /* Power up ARC */
> > + hdptx_hdmi_arc_config(cdns_phy);
> > +
> > + /* Configure PHY in A0 mode (PHY must be in the A0 power
> > + * state in order to transmit data)
> > + */
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, 0x0001);
> > +
> > + /* Wait for Power State A0 Ack */
> > + for (i = 0; i < 10; i++) {
> > + val = cdns_phy_reg_read(cdns_phy,
> PHY_HDP_MODE_CTRL);
> > + if (val & (1 << 4))
> > + break;
> > + msleep(20);
> > + }
> > + if (i == 10) {
> > + dev_err(cdns_phy->dev, "Wait A0 Ack failed\n");
> > + return -1;
> > + }
> > + return 0;
> > +}
> > +
> > +static int hdptx_hdmi_phy_power_down(struct cdns_hdptx_hdmi_phy
> > +*cdns_phy) {
> > + int timeout;
> > + u32 reg_val;
> > +
> > + reg_val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
> > + reg_val &= 0xfff0;
> > + /* PHY_DP_MODE_CTL set to A3 power state*/
> > + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, reg_val |
> 0x8);
> > +
> > + /* Wait for A3 acknowledge */
> > + timeout = 0;
> > + do {
> > + reg_val = cdns_phy_reg_read(cdns_phy,
> PHY_HDP_MODE_CTRL);
> > + dev_dbg(cdns_phy->dev, "Reg val is 0x%04x\n", reg_val);
> > + timeout++;
> > + msleep(100);
> > + } while (!(reg_val & (0x8 << 4)) && (timeout < 10));
> > +
> > + return 0;
> > +}
> > +
> > +static int cdns_hdptx_hdmi_phy_on(struct phy *phy) {
> > + struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
> > +
> > + return hdptx_hdmi_phy_power_up(cdns_phy);
> > +}
> > +
> > +static int cdns_hdptx_hdmi_phy_off(struct phy *phy) {
> > + struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
> > +
> > + hdptx_hdmi_phy_power_down(cdns_phy);
> > + return 0;
> > +}
> > +
> > +int cdns_hdptx_hdmi_phy_valid(struct phy *phy, enum phy_mode mode,
> int submode,
> > + union
> > +phy_configure_opts *opts) {
> > + u32 rate = opts->hdmi.pixel_clk_rate;
> > + int i;
> > +
> > + for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++)
> > + if (rate ==
> pixel_clk_output_ctrl_table[i].pixel_clk_freq_min)
> > + return 0;
> > +
> > + return -EINVAL;
> > +}
> > +
> > +static int cdns_hdptx_hdmi_phy_init(struct phy *phy) {
> > + return 0;
> > +}
> > +
> > +static int cdns_hdptx_hdmi_configure(struct phy *phy,
> > + union phy_configure_opts *opts)
> {
> > + struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
> > + int ret;
> > +
> > + cdns_phy->pixel_clk_rate = opts->hdmi.pixel_clk_rate;
> > + cdns_phy->color_space = opts->hdmi.color_space;
> > + cdns_phy->bpc = opts->hdmi.bpc;
> > +
> > + /* Check HDMI FW alive before HDMI PHY init */
> > + ret = hdptx_phy_check_alive(cdns_phy);
> > + if (ret == false) {
> > + dev_err(cdns_phy->dev, "NO HDMI FW running\n");
> > + return -ENXIO;
> > + }
> > +
> > + /* Configure PHY */
> > + if (hdptx_hdmi_phy_cfg(cdns_phy, cdns_phy->pixel_clk_rate) < 0) {
> > + dev_err(cdns_phy->dev, "failed to set phy pclock\n");
> > + return -EINVAL;
> > + }
> > +
> > + ret = hdptx_hdmi_phy_power_up(cdns_phy);
> > + if (ret < 0)
> > + return ret;
> > +
> > + hdptx_hdmi_phy_set_vswing(cdns_phy);
> > +
> > + return 0;
> > +}
> > +
> > +static const struct phy_ops cdns_hdptx_hdmi_phy_ops = {
> > + .init = cdns_hdptx_hdmi_phy_init,
> > + .configure = cdns_hdptx_hdmi_configure,
> > + .power_on = cdns_hdptx_hdmi_phy_on,
> > + .power_off = cdns_hdptx_hdmi_phy_off,
> > + .validate = cdns_hdptx_hdmi_phy_valid,
> > + .owner = THIS_MODULE,
> > +};
> > +
> > +static int cdns_hdptx_hdmi_phy_probe(struct platform_device *pdev) {
> > + struct cdns_hdptx_hdmi_phy *cdns_phy;
> > + struct device *dev = &pdev->dev;
> > + struct device_node *node = dev->of_node;
> > + struct phy_provider *phy_provider;
> > + struct resource *res;
> > + struct phy *phy;
> > + int ret;
> > +
> > + cdns_phy = devm_kzalloc(dev, sizeof(*cdns_phy), GFP_KERNEL);
> > + if (!cdns_phy)
> > + return -ENOMEM;
> > +
> > + dev_set_drvdata(dev, cdns_phy);
> > + cdns_phy->dev = dev;
> > + mutex_init(&cdns_phy->mbox_mutex);
> > +
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + if (!res)
> > + return -ENODEV;
> > + cdns_phy->regs = devm_ioremap(dev, res->start,
> resource_size(res));
> > + if (IS_ERR(cdns_phy->regs))
> > + return PTR_ERR(cdns_phy->regs);
> > +
> > + phy = devm_phy_create(dev, node, &cdns_hdptx_hdmi_phy_ops);
> > + if (IS_ERR(phy))
> > + return PTR_ERR(phy);
> > +
> > + phy->attrs.mode = PHY_MODE_HDMI;
> > +
> > + cdns_phy->phy = phy;
> > + phy_set_drvdata(phy, cdns_phy);
> > +
> > + ret = hdptx_hdmi_clk_enable(cdns_phy);
> > + if (ret) {
> > + dev_err(dev, "Init clk fail\n");
> > + return -EINVAL;
> > + }
> > +
> > + phy_provider = devm_of_phy_provider_register(dev,
> of_phy_simple_xlate);
> > + if (IS_ERR(phy_provider)) {
> > + ret = PTR_ERR(phy_provider);
> > + goto clk_disable;
> > + }
> > +
> > + dev_dbg(dev, "probe success!\n");
> > +
> > + return 0;
> > +
> > +clk_disable:
> > + hdptx_hdmi_clk_disable(cdns_phy);
> > +
> > + return -EINVAL;
> > +}
> > +
> > +static int cdns_hdptx_hdmi_phy_remove(struct platform_device *pdev) {
> > + struct cdns_hdptx_hdmi_phy *cdns_phy =
> > +platform_get_drvdata(pdev);
> > +
> > + hdptx_hdmi_clk_disable(cdns_phy);
> > +
> > + return 0;
> > +}
> > +
> > +static const struct of_device_id cdns_hdptx_hdmi_phy_of_match[] = {
> > + {.compatible = "fsl,imx8mq-hdmi-phy" },
> > + { /* sentinel */ }
> > +};
> > +MODULE_DEVICE_TABLE(of, cdns_hdptx_hdmi_phy_of_match);
> > +
> > +static struct platform_driver cdns_hdptx_hdmi_phy_driver = {
> > + .probe = cdns_hdptx_hdmi_phy_probe,
> > + .remove = cdns_hdptx_hdmi_phy_remove,
> > + .driver = {
> > + .name = "cdns-hdptx-hdmi-phy",
> > + .of_match_table = cdns_hdptx_hdmi_phy_of_match,
> > + }
> > +};
> > +module_platform_driver(cdns_hdptx_hdmi_phy_driver);
> > +
> > +MODULE_AUTHOR("Sandor Yu <[email protected]>");
> > +MODULE_DESCRIPTION("Cadence HDP-TX HDMI PHY driver");
> > +MODULE_LICENSE("GPL");
> > --
> > 2.34.1
>
> --
> ~Vinod
B.R
Sandor
Hi Vinod,
Thanks for your comments,
> -----Original Message-----
> From: Vinod Koul <[email protected]>
> Sent: 2023??6??21?? 19:22
> To: Sandor Yu <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; dl-linux-imx
> <[email protected]>; Oliver Brown <[email protected]>
> Subject: [EXT] Re: [PATCH v6 4/8] phy: Add HDMI configuration options
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> On 15-06-23, 09:38, Sandor Yu wrote:
> > Allow HDMI PHYs to be configured through the generic functions through
> > a custom structure added to the generic union.
> >
> > The parameters added here are based on HDMI PHY implementation
> > practices. The current set of parameters should cover the potential
> > users.
> >
> > Signed-off-by: Sandor Yu <[email protected]>
> > ---
> > include/linux/phy/phy-hdmi.h | 38
> ++++++++++++++++++++++++++++++++++++
> > include/linux/phy/phy.h | 7 ++++++-
> > 2 files changed, 44 insertions(+), 1 deletion(-) create mode 100644
> > include/linux/phy/phy-hdmi.h
> >
> > diff --git a/include/linux/phy/phy-hdmi.h
> > b/include/linux/phy/phy-hdmi.h new file mode 100644 index
> > 000000000000..5765aa5bc175
> > --- /dev/null
> > +++ b/include/linux/phy/phy-hdmi.h
> > @@ -0,0 +1,38 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * Copyright 2022 NXP
> > + */
> > +
> > +#ifndef __PHY_HDMI_H_
> > +#define __PHY_HDMI_H_
> > +
> > +/**
> > + * Pixel Encoding as HDMI Specification
> > + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
> > + * YUV420: HDMI Specification 2.a Section 7.1 */ enum
> > +hdmi_phy_colorspace {
> > + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
> > + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
> > + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
> > + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
>
> Better add this comments and above one as expected by kernel-doc for
> enum..
OK, I will add it and it will replace by enum hdmi_colorspace in <linux/hdmi.h> in the next version.
>
> > + HDMI_PHY_COLORSPACE_RESERVED4,
> > + HDMI_PHY_COLORSPACE_RESERVED5,
> > + HDMI_PHY_COLORSPACE_RESERVED6,
> > +};
> > +
> > +/**
> > + * struct phy_configure_opts_hdmi - HDMI configuration set
> > + * @pixel_clk_rate: Pixel clock of video modes in KHz.
> > + * @bpc: Maximum bits per color channel.
> > + * @color_space: Colorspace in enum hdmi_phy_colorspace.
> > + *
> > + * This structure is used to represent the configuration state of a HDMI phy.
> > + */
> > +struct phy_configure_opts_hdmi {
> > + unsigned int pixel_clk_rate;
> > + unsigned int bpc;
> > + enum hdmi_phy_colorspace color_space; };
> > +
> > +#endif /* __PHY_HDMI_H_ */
> > diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index
> > 3a570bc59fc7..93d77d45b1d4 100644
> > --- a/include/linux/phy/phy.h
> > +++ b/include/linux/phy/phy.h
> > @@ -17,6 +17,7 @@
> > #include <linux/regulator/consumer.h>
> >
> > #include <linux/phy/phy-dp.h>
> > +#include <linux/phy/phy-hdmi.h>
> > #include <linux/phy/phy-lvds.h>
> > #include <linux/phy/phy-mipi-dphy.h>
> >
> > @@ -42,7 +43,8 @@ enum phy_mode {
> > PHY_MODE_MIPI_DPHY,
> > PHY_MODE_SATA,
> > PHY_MODE_LVDS,
> > - PHY_MODE_DP
> > + PHY_MODE_DP,
> > + PHY_MODE_HDMI,
> > };
> >
> > enum phy_media {
> > @@ -60,11 +62,14 @@ enum phy_media {
> > * the DisplayPort protocol.
> > * @lvds: Configuration set applicable for phys supporting
> > * the LVDS phy mode.
> > + * @hdmi: Configuration set applicable for phys supporting
> > + * the HDMI phy mode.
> > */
> > union phy_configure_opts {
> > struct phy_configure_opts_mipi_dphy mipi_dphy;
> > struct phy_configure_opts_dp dp;
> > struct phy_configure_opts_lvds lvds;
> > + struct phy_configure_opts_hdmi hdmi;
> > };
> >
> > /**
> > --
> > 2.34.1
>
> --
> ~Vinod
B.R
Sandor
> -----Original Message-----
> From: Dmitry Baryshkov <[email protected]>
> Sent: 2023年7月10日 15:30
> To: Sandor Yu <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; dl-linux-imx <[email protected]>; Oliver Brown
> <[email protected]>
> Subject: Re: [EXT] Re: [PATCH v6 4/8] phy: Add HDMI configuration options
>
>
> On Mon, 10 Jul 2023 at 10:28, Sandor Yu <[email protected]> wrote:
> >
> > Hi Dmitry,
> >
> > Thanks for your comments,
> >
> > > -----Original Message-----
> > > From: Dmitry Baryshkov <[email protected]>
> > > Sent: 2023年6月25日 2:02
> > > To: Sandor Yu <[email protected]>; [email protected];
> > > [email protected]; [email protected];
> > > [email protected]; [email protected];
> > > [email protected]; [email protected]; [email protected];
> > > [email protected]; [email protected];
> > > [email protected]; [email protected]; [email protected];
> > > [email protected]; [email protected];
> > > [email protected]; [email protected];
> > > [email protected]; [email protected]
> > > Cc: [email protected]; dl-linux-imx <[email protected]>; Oliver
> > > Brown <[email protected]>
> > > Subject: [EXT] Re: [PATCH v6 4/8] phy: Add HDMI configuration
> > > options
>
> Is this part necessary?
No, forgot to remove the Caution it is auto added by mail system.
>
> > >
> > > Caution: This is an external email. Please take care when clicking
> > > links or opening attachments. When in doubt, report the message
> > > using the 'Report this email' button
> > >
> > >
> > > On 15/06/2023 04:38, Sandor Yu wrote:
> > > > Allow HDMI PHYs to be configured through the generic functions
> > > > through a custom structure added to the generic union.
> > > >
> > > > The parameters added here are based on HDMI PHY implementation
> > > > practices. The current set of parameters should cover the
> > > > potential users.
> > > >
> > > > Signed-off-by: Sandor Yu <[email protected]>
> > > > ---
> > > > include/linux/phy/phy-hdmi.h | 38
> > > ++++++++++++++++++++++++++++++++++++
> > > > include/linux/phy/phy.h | 7 ++++++-
> > > > 2 files changed, 44 insertions(+), 1 deletion(-)
> > > > create mode 100644 include/linux/phy/phy-hdmi.h
> > > >
> > > > diff --git a/include/linux/phy/phy-hdmi.h
> > > > b/include/linux/phy/phy-hdmi.h new file mode 100644 index
> > > > 000000000000..5765aa5bc175
> > > > --- /dev/null
> > > > +++ b/include/linux/phy/phy-hdmi.h
> > > > @@ -0,0 +1,38 @@
> > > > +/* SPDX-License-Identifier: GPL-2.0 */
> > > > +/*
> > > > + * Copyright 2022 NXP
> > > > + */
> > > > +
> > > > +#ifndef __PHY_HDMI_H_
> > > > +#define __PHY_HDMI_H_
> > > > +
> > > > +/**
> > > > + * Pixel Encoding as HDMI Specification
> > > > + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
> > > > + * YUV420: HDMI Specification 2.a Section 7.1 */ enum
> > > > +hdmi_phy_colorspace {
> > > > + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
> > > > + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
> > > > + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
> > > > + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
> > > > + HDMI_PHY_COLORSPACE_RESERVED4,
> > > > + HDMI_PHY_COLORSPACE_RESERVED5,
> > > > + HDMI_PHY_COLORSPACE_RESERVED6, };
> > >
> > > This enum duplicates enum hdmi_colorspace from <linux/hdmi.h> HDMI
> > > 2.0 defines '7' to be IDO-defined.
> > >
> > > Would it be better to use that enum instead?
> > Accept. I will create head file hdmi_colorspace.h to reuse enum
> hdmi_colorspace in <linux/hdmi.h>.
>
> Hmm, you need another header file to reuse this enum.
>
> >
> > B.R
> > Sandor
> > >
> > > > +
> > > > +/**
> > > > + * struct phy_configure_opts_hdmi - HDMI configuration set
> > > > + * @pixel_clk_rate: Pixel clock of video modes in KHz.
> > > > + * @bpc: Maximum bits per color channel.
> > > > + * @color_space: Colorspace in enum hdmi_phy_colorspace.
> > > > + *
> > > > + * This structure is used to represent the configuration state of a HDMI
> phy.
> > > > + */
> > > > +struct phy_configure_opts_hdmi {
> > > > + unsigned int pixel_clk_rate;
> > > > + unsigned int bpc;
> > > > + enum hdmi_phy_colorspace color_space; };
> > > > +
> > > > +#endif /* __PHY_HDMI_H_ */
> > >
> > > [skipped the rest]
> > >
> > > --
> > > With best wishes
> > > Dmitry
> >
>
>
> --
> With best wishes
> Dmitry
B.R
Sandor
On 10/07/2023 10:28, Sandor Yu wrote:
> Hi Dmitry,
>
> Thanks for your comments,
>
>> From: Dmitry Baryshkov <[email protected]>
>> On 15/06/2023 04:38, Sandor Yu wrote:
>>> Allow HDMI PHYs to be configured through the generic functions through
>>> a custom structure added to the generic union.
>>>
>>> The parameters added here are based on HDMI PHY implementation
>>> practices. The current set of parameters should cover the potential
>>> users.
>>>
>>> Signed-off-by: Sandor Yu <[email protected]>
>>> ---
>>> include/linux/phy/phy-hdmi.h | 38
>> ++++++++++++++++++++++++++++++++++++
>>> include/linux/phy/phy.h | 7 ++++++-
>>> 2 files changed, 44 insertions(+), 1 deletion(-)
>>> create mode 100644 include/linux/phy/phy-hdmi.h
>>>
>>> diff --git a/include/linux/phy/phy-hdmi.h
>>> b/include/linux/phy/phy-hdmi.h new file mode 100644 index
>>> 000000000000..5765aa5bc175
>>> --- /dev/null
>>> +++ b/include/linux/phy/phy-hdmi.h
>>> @@ -0,0 +1,38 @@
>>> +/* SPDX-License-Identifier: GPL-2.0 */
>>> +/*
>>> + * Copyright 2022 NXP
>>> + */
>>> +
>>> +#ifndef __PHY_HDMI_H_
>>> +#define __PHY_HDMI_H_
>>> +
>>> +/**
>>> + * Pixel Encoding as HDMI Specification
>>> + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
>>> + * YUV420: HDMI Specification 2.a Section 7.1 */ enum
>>> +hdmi_phy_colorspace {
>>> + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
>>> + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
>>> + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
>>> + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
>>> + HDMI_PHY_COLORSPACE_RESERVED4,
>>> + HDMI_PHY_COLORSPACE_RESERVED5,
>>> + HDMI_PHY_COLORSPACE_RESERVED6,
>>> +};
>>
>> This enum duplicates enum hdmi_colorspace from <linux/hdmi.h> HDMI 2.0
>> defines '7' to be IDO-defined.
>>
>> Would it be better to use that enum instead?
> Accept. I will create head file hdmi_colorspace.h to reuse enum hdmi_colorspace in <linux/hdmi.h>.
Excuse me, it was supposed to be a question.
Do you need another header file to reuse this enum?
>
> B.R
> Sandor
>>
>>> +
>>> +/**
>>> + * struct phy_configure_opts_hdmi - HDMI configuration set
>>> + * @pixel_clk_rate: Pixel clock of video modes in KHz.
>>> + * @bpc: Maximum bits per color channel.
>>> + * @color_space: Colorspace in enum hdmi_phy_colorspace.
>>> + *
>>> + * This structure is used to represent the configuration state of a HDMI phy.
>>> + */
>>> +struct phy_configure_opts_hdmi {
>>> + unsigned int pixel_clk_rate;
>>> + unsigned int bpc;
>>> + enum hdmi_phy_colorspace color_space; };
>>> +
>>> +#endif /* __PHY_HDMI_H_ */
>>
>> [skipped the rest]
>>
>> --
>> With best wishes
>> Dmitry
>
--
With best wishes
Dmitry
> -----Original Message-----
> From: Dmitry Baryshkov <[email protected]>
> Sent: 2023年7月10日 15:44
> To: Sandor Yu <[email protected]>; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]
> Cc: [email protected]; dl-linux-imx <[email protected]>; Oliver Brown
> <[email protected]>
> Subject: Re: [EXT] Re: [PATCH v6 4/8] phy: Add HDMI configuration options
>
>
> On 10/07/2023 10:28, Sandor Yu wrote:
> > Hi Dmitry,
> >
> > Thanks for your comments,
> >
> >> From: Dmitry Baryshkov <[email protected]> On 15/06/2023
> >> 04:38, Sandor Yu wrote:
> >>> Allow HDMI PHYs to be configured through the generic functions
> >>> through a custom structure added to the generic union.
> >>>
> >>> The parameters added here are based on HDMI PHY implementation
> >>> practices. The current set of parameters should cover the potential
> >>> users.
> >>>
> >>> Signed-off-by: Sandor Yu <[email protected]>
> >>> ---
> >>> include/linux/phy/phy-hdmi.h | 38
> >> ++++++++++++++++++++++++++++++++++++
> >>> include/linux/phy/phy.h | 7 ++++++-
> >>> 2 files changed, 44 insertions(+), 1 deletion(-)
> >>> create mode 100644 include/linux/phy/phy-hdmi.h
> >>>
> >>> diff --git a/include/linux/phy/phy-hdmi.h
> >>> b/include/linux/phy/phy-hdmi.h new file mode 100644 index
> >>> 000000000000..5765aa5bc175
> >>> --- /dev/null
> >>> +++ b/include/linux/phy/phy-hdmi.h
> >>> @@ -0,0 +1,38 @@
> >>> +/* SPDX-License-Identifier: GPL-2.0 */
> >>> +/*
> >>> + * Copyright 2022 NXP
> >>> + */
> >>> +
> >>> +#ifndef __PHY_HDMI_H_
> >>> +#define __PHY_HDMI_H_
> >>> +
> >>> +/**
> >>> + * Pixel Encoding as HDMI Specification
> >>> + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5
> >>> + * YUV420: HDMI Specification 2.a Section 7.1 */ enum
> >>> +hdmi_phy_colorspace {
> >>> + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */
> >>> + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */
> >>> + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */
> >>> + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */
> >>> + HDMI_PHY_COLORSPACE_RESERVED4,
> >>> + HDMI_PHY_COLORSPACE_RESERVED5,
> >>> + HDMI_PHY_COLORSPACE_RESERVED6, };
> >>
> >> This enum duplicates enum hdmi_colorspace from <linux/hdmi.h> HDMI
> >> 2.0 defines '7' to be IDO-defined.
> >>
> >> Would it be better to use that enum instead?
> > Accept. I will create head file hdmi_colorspace.h to reuse enum
> hdmi_colorspace in <linux/hdmi.h>.
>
> Excuse me, it was supposed to be a question.
>
> Do you need another header file to reuse this enum?
I'm not sure community whether would accept the patch that simply include <linux/hdmi.h> in phy-hdmi.h
because there are lots of other definition in <linux/hdmi.h> that not need by phy-hdmi.h.
If the answer is yes, I happy to follow.
>
> >
> > B.R
> > Sandor
> >>
> >>> +
> >>> +/**
> >>> + * struct phy_configure_opts_hdmi - HDMI configuration set
> >>> + * @pixel_clk_rate: Pixel clock of video modes in KHz.
> >>> + * @bpc: Maximum bits per color channel.
> >>> + * @color_space: Colorspace in enum hdmi_phy_colorspace.
> >>> + *
> >>> + * This structure is used to represent the configuration state of a HDMI
> phy.
> >>> + */
> >>> +struct phy_configure_opts_hdmi {
> >>> + unsigned int pixel_clk_rate;
> >>> + unsigned int bpc;
> >>> + enum hdmi_phy_colorspace color_space; };
> >>> +
> >>> +#endif /* __PHY_HDMI_H_ */
> >>
> >> [skipped the rest]
> >>
> >> --
> >> With best wishes
> >> Dmitry
> >
>
> --
> With best wishes
> Dmitry
B.R
Sandor
On Thu, 15 Jun 2023 09:38:10 +0800, Sandor Yu wrote:
> The patch set initial support for Cadence MHDP8501(HDMI/DP) DRM bridge
> drivers and Cadence HDP-TX PHY(HDMI/DP) drivers for Freescale i.MX8MQ.
>
> The patch set compose of DRM bridge drivers and PHY drivers.
>
> Both of them need the followed two patches to pass build.
> drm: bridge: Cadence: convert mailbox functions to macro functions
> phy: Add HDMI configuration options
>
> [...]
Applied, thanks!
[1/8] drm: bridge: Cadence: convert mailbox functions to macro functions
(no commit info)
[2/8] dt-bindings: display: bridge: Add Cadence MHDP8501 HDMI and DP
(no commit info)
[3/8] drm: bridge: Cadence: Add MHDP8501 DP driver
(no commit info)
[4/8] phy: Add HDMI configuration options
commit: 7f90516edb5cbfa4108b92bb83cbc8ef35a4cccd
[5/8] drm: bridge: Cadence: Add MHDP8501 HDMI driver
(no commit info)
[6/8] dt-bindings: phy: Add Freescale iMX8MQ DP and HDMI PHY
(no commit info)
[7/8] phy: freescale: Add DisplayPort PHY driver for i.MX8MQ
commit: a2717f1d7c64660679441c407b96103abb7c4a8c
[8/8] phy: freescale: Add HDMI PHY driver for i.MX8MQ
commit: 8e36091a94d2d28e8dccb9bfda081b2e42e951ae
Best regards,
--
~Vinod