Hi,
This series adds support for audio using the QMC controller available in
some Freescale PowerQUICC SoCs.
This series contains three parts in order to show the different blocks
hierarchy and their usage in this support.
The first one is related to TSA (Time Slot Assigner).
The TSA handles the data present at the pin level (TDM with up to 64
time slots) and dispatchs them to one or more serial controller (SCC).
The second is related to QMC (QUICC Multichannel Controller).
The QMC handles the data at the serial controller (SCC) level and splits
again the data to creates some virtual channels.
The last one is related to the audio component (QMC audio).
It is the glue between the QMC controller and the ASoC component. It
handles one or more QMC virtual channels and creates one DAI per QMC
virtual channels handled.
Compared to the previous iteration
https://lore.kernel.org/linux-kernel/[email protected]/
this v5 series mainly:
- fixes bindings,
- removes one left out_8() specific ppc call (missed in v3),
- changes 'depends-on' in case of COMPILE_TEST.
Best regards,
Herve Codina
Changes v4 -> v5
- patch 1
Rename fsl,tsa.yaml to fsl,cpm1-tsa.yaml
Rename #serial-cells to #fsl,serial-cells and add a description
Fix typos
Remove examples present in description
Use a pattern property for fsl,[rt]x-ts-routes
- patch 2
Remove one left out_8() ppc specific function call
Remove the no more needed PPC dependency in case of COMPILE_TEST
- patch 4
Add 'Acked-by: Michael Ellerman <[email protected]>'
- patch 5
Rename fsl,qmc.yaml to fsl,cpm1-scc-qmc.yaml
Rename #chan-cells to #fsl,chan-cells and add a description
- patch 6
Add the SOC_FSL dependency in case of COMPILE_TEST (issue raised by
the kernel test robot).
Fix a typo in commit log
Add 'Acked-by: Li Yang <[email protected]>'
Changes v3 -> v4
- patches 2, 6 and 9
Update code comment format.
- patch 1
Fix some description formats.
Add 'additionalProperties: false' in subnode.
Move fsl,mode to fsl,diagnostic-mode.
Change clocks and clock-names properties.
Add '#serial-cells' property related to the newly introduced
fsl,tsa-serial phandle.
- patch 2
Move fsl,mode to fsl,diagnostic-mode.
Replace the fsl,tsa phandle and the fsl,tsa-cell-id property by a
fsl,tsa-serial phandle and update the related API.
Add missing locks.
- patch 5
Fix some description format.
Replace the fsl,tsa phandle and the fsl,tsa-cell-id property by a
fsl,tsa-serial phandle.
Rename fsl,mode to fsl,operational-mode and update its description.
- patch 6
Replace the fsl,tsa phandle and the fsl,tsa-cell-id property by a
fsl,tsa-serial phandle and use the TSA updated API.
Rename fsl,mode to fsl,operational-mode.
- patch 8
Add 'Reviewed-by: Krzysztof Kozlowski <[email protected]>'
Changes v2 -> v3
- All bindings
Rename fsl-tsa.h to fsl,tsa.h
Add missing vendor prefix
Various fixes (quotes, node names, upper/lower case)
- patches 1 and 2 (TSA binding specific)
Remove 'reserved' values in the routing tables
Remove fsl,grant-mode
Add a better description for 'fsl,common-rxtx-pins'
Fix clocks/clocks-name handling against fsl,common-rxtx-pins
Add information related to the delays unit
Removed FSL_CPM_TSA_NBCELL
Fix license in binding header file fsl,tsa.h
- patches 5 and 6 (QMC binding specific)
Remove fsl,cpm-command property
Add interrupt property constraint
- patches 8 and 9 (QMC audio binding specific)
Remove 'items' in compatible property definition
Add missing 'dai-common.yaml' reference
Fix the qmc_chan phandle definition
- patch 2 and 6
Use io{read,write}be{32,16}
Change commit subjects and logs
- patch 4
Add 'Acked-by: Christophe Leroy <[email protected]>'
Changes v1 -> v2:
- patch 2 and 6
Fix kernel test robot errors
- other patches
No changes
Herve Codina (10):
dt-bindings: soc: fsl: cpm_qe: Add TSA controller
soc: fsl: cpm1: Add support for TSA
MAINTAINERS: add the Freescale TSA controller entry
powerpc/8xx: Use a larger CPM1 command check mask
dt-bindings: soc: fsl: cpm_qe: Add QMC controller
soc: fsl: cpm1: Add support for QMC
MAINTAINERS: add the Freescale QMC controller entry
dt-bindings: sound: Add support for QMC audio
ASoC: fsl: Add support for QMC audio
MAINTAINERS: add the Freescale QMC audio entry
.../soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 172 ++
.../bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml | 234 +++
.../bindings/sound/fsl,qmc-audio.yaml | 117 ++
MAINTAINERS | 25 +
arch/powerpc/platforms/8xx/cpm1.c | 2 +-
drivers/soc/fsl/qe/Kconfig | 23 +
drivers/soc/fsl/qe/Makefile | 2 +
drivers/soc/fsl/qe/qmc.c | 1533 +++++++++++++++++
drivers/soc/fsl/qe/tsa.c | 869 ++++++++++
drivers/soc/fsl/qe/tsa.h | 42 +
include/dt-bindings/soc/fsl,tsa.h | 13 +
include/soc/fsl/qe/qmc.h | 71 +
sound/soc/fsl/Kconfig | 9 +
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/fsl_qmc_audio.c | 735 ++++++++
15 files changed, 3848 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
create mode 100644 Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
create mode 100644 drivers/soc/fsl/qe/qmc.c
create mode 100644 drivers/soc/fsl/qe/tsa.c
create mode 100644 drivers/soc/fsl/qe/tsa.h
create mode 100644 include/dt-bindings/soc/fsl,tsa.h
create mode 100644 include/soc/fsl/qe/qmc.h
create mode 100644 sound/soc/fsl/fsl_qmc_audio.c
--
2.39.1
Add support for the time slot assigner (TSA)
available in some PowerQUICC SoC such as MPC885
or MPC866.
Signed-off-by: Herve Codina <[email protected]>
---
.../bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml | 234 ++++++++++++++++++
include/dt-bindings/soc/fsl,tsa.h | 13 +
2 files changed, 247 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
create mode 100644 include/dt-bindings/soc/fsl,tsa.h
diff --git a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
new file mode 100644
index 000000000000..bcd03f89780e
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
@@ -0,0 +1,234 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PowerQUICC CPM Time-slot assigner (TSA) controller
+
+maintainers:
+ - Herve Codina <[email protected]>
+
+description:
+ The TSA is the time-slot assigner that can be found on some PowerQUICC SoC.
+ Its purpose is to route some TDM time-slots to other internal serial
+ controllers.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - fsl,mpc885-tsa
+ - fsl,mpc866-tsa
+ - const: fsl,cpm1-tsa
+
+ reg:
+ items:
+ - description: SI (Serial Interface) register base
+ - description: SI RAM base
+
+ reg-names:
+ items:
+ - const: si_regs
+ - const: si_ram
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ '#fsl,serial-cells':
+ $ref: /schemas/types.yaml#/definitions/uint32
+ const: 1
+ description:
+ TSA consumers that use a phandle to TSA need to pass the serial identifier
+ with this phandle (defined in dt-bindings/soc/fsl,tsa.h).
+ For instance "fsl,tsa-serial = <&tsa FSL_CPM_TSA_SCC4>;".
+
+patternProperties:
+ '^tdm@[0-1]$':
+ description:
+ The TDM managed by this controller
+ type: object
+
+ additionalProperties: false
+
+ properties:
+ reg:
+ minimum: 0
+ maximum: 1
+ description:
+ The TDM number for this TDM, 0 for TDMa and 1 for TDMb
+
+ fsl,common-rxtx-pins:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ The hardware can use four dedicated pins for Tx clock, Tx sync, Rx
+ clock and Rx sync or use only two pins, Tx/Rx clock and Tx/Rx sync.
+ Without the 'fsl,common-rxtx-pins' property, the four pins are used.
+ With the 'fsl,common-rxtx-pins' property, two pins are used.
+
+ clocks:
+ minItems: 2
+ items:
+ - description: External clock connected to L1RSYNC pin
+ - description: External clock connected to L1RCLK pin
+ - description: External clock connected to L1TSYNC pin
+ - description: External clock connected to L1TCLK pin
+ clock-names:
+ minItems: 2
+ items:
+ - const: l1rsync
+ - const: l1rclk
+ - const: l1tsync
+ - const: l1tclk
+
+ fsl,diagnostic-mode:
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [disabled, echo, internal-loopback, control-loopback]
+ default: disabled
+ description: |
+ The diagnostic mode can be used to diagnose some communication issues.
+ It should not be set (or set to 'disabled') when diagnostic is not
+ needed.
+ Diagnostic mode:
+ - disabled:
+ Diagnostic disabled (ie. normal operation)
+ - echo:
+ Automatic echo. Rx data is resent on Tx.
+ - internal-loopback:
+ The TDM transmitter is connected to the receiver. Data appears
+ on Tx pin.
+ - control-loopback:
+ The TDM transmitter is connected to the receiver. The Tx pin is
+ disconnected.
+
+ fsl,rx-frame-sync-delay-bits:
+ enum: [0, 1, 2, 3]
+ default: 0
+ description: |
+ Receive frame sync delay in number of bits.
+ Indicates the delay between the Rx sync and the first bit of the Rx
+ frame. 0 for no bit delay. 1, 2 or 3 for 1, 2 or 3 bits delay.
+
+ fsl,tx-frame-sync-delay-bits:
+ enum: [0, 1, 2, 3]
+ default: 0
+ description: |
+ Transmit frame sync delay in number of bits.
+ Indicates the delay between the Tx sync and the first bit of the Tx
+ frame. 0 for no bit delay. 1, 2 or 3 for 1, 2 or 3 bits delay.
+
+ fsl,clock-falling-edge:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Data is sent on falling edge of the clock (and received on the rising
+ edge). If 'clock-falling-edge' is not present, data is sent on the
+ rising edge (and received on the falling edge).
+
+ fsl,fsync-rising-edge:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Frame sync pulses are sampled with the rising edge of the channel
+ clock. If 'fsync-rising-edge' is not present, pulses are sampled with
+ the falling edge.
+
+ fsl,double-speed-clock:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ The channel clock is twice the data rate.
+
+ patternProperties:
+ '^fsl,[rt]x-ts-routes$':
+ $ref: /schemas/types.yaml#/definitions/uint32-matrix
+ description: |
+ A list of tuple that indicates the Tx or Rx time-slots routes.
+ items:
+ items:
+ - description:
+ The number of time-slots
+ minimum: 1
+ maximum: 64
+ - description: |
+ The source (Tx) or destination (Rx) serial interface
+ (dt-bindings/soc/fsl,tsa.h defines these values)
+ - 0: No destination
+ - 1: SCC2
+ - 2: SCC3
+ - 3: SCC4
+ - 4: SMC1
+ - 5: SMC2
+ enum: [0, 1, 2, 3, 4, 5]
+ minItems: 1
+ maxItems: 64
+
+ allOf:
+ # If fsl,common-rxtx-pins is present, only 2 clocks are needed.
+ # Else, the 4 clocks must be present.
+ - if:
+ required:
+ - fsl,common-rxtx-pins
+ then:
+ properties:
+ clocks:
+ maxItems: 2
+ clock-names:
+ maxItems: 2
+ else:
+ properties:
+ clocks:
+ minItems: 4
+ clock-names:
+ minItems: 4
+
+ required:
+ - reg
+ - clocks
+ - clock-names
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - '#address-cells'
+ - '#size-cells'
+ - '#fsl,serial-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/soc/fsl,tsa.h>
+
+ tsa@ae0 {
+ compatible = "fsl,mpc885-tsa", "fsl,cpm1-tsa";
+ reg = <0xae0 0x10>,
+ <0xc00 0x200>;
+ reg-names = "si_regs", "si_ram";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #fsl,serial-cells = <1>;
+
+ tdm@0 {
+ /* TDMa */
+ reg = <0>;
+
+ clocks = <&clk_l1rsynca>, <&clk_l1rclka>;
+ clock-names = "l1rsync", "l1rclk";
+
+ fsl,common-rxtx-pins;
+ fsl,fsync-rising-edge;
+
+ fsl,tx-ts-routes = < 2 0 >, /* TS 0..1 */
+ < 24 FSL_CPM_TSA_SCC4 >, /* TS 2..25 */
+ < 1 0 >, /* TS 26 */
+ < 5 FSL_CPM_TSA_SCC3 >; /* TS 27..31 */
+
+ fsl,rx-ts-routes = < 2 0 >, /* TS 0..1 */
+ < 24 FSL_CPM_TSA_SCC4 >, /* 2..25 */
+ < 1 0 >, /* TS 26 */
+ < 5 FSL_CPM_TSA_SCC3 >; /* TS 27..31 */
+ };
+ };
diff --git a/include/dt-bindings/soc/fsl,tsa.h b/include/dt-bindings/soc/fsl,tsa.h
new file mode 100644
index 000000000000..2cc44e867dbe
--- /dev/null
+++ b/include/dt-bindings/soc/fsl,tsa.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
+
+#ifndef __DT_BINDINGS_SOC_FSL_TSA_H
+#define __DT_BINDINGS_SOC_FSL_TSA_H
+
+#define FSL_CPM_TSA_NU 0 /* Pseuso Cell Id for not used item */
+#define FSL_CPM_TSA_SCC2 1
+#define FSL_CPM_TSA_SCC3 2
+#define FSL_CPM_TSA_SCC4 3
+#define FSL_CPM_TSA_SMC1 4
+#define FSL_CPM_TSA_SMC2 5
+
+#endif
--
2.39.1
After contributing the driver, add myself as the maintainer
for the Freescale TSA controller.
Signed-off-by: Herve Codina <[email protected]>
---
MAINTAINERS | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 7f86d02cb427..0cfedb2f712c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8372,6 +8372,15 @@ S: Maintained
F: drivers/soc/fsl/qe/
F: include/soc/fsl/qe/
+FREESCALE QUICC ENGINE TSA DRIVER
+M: Herve Codina <[email protected]>
+L: [email protected]
+S: Maintained
+F: Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
+F: drivers/soc/fsl/qe/tsa.c
+F: drivers/soc/fsl/qe/tsa.h
+F: include/dt-bindings/soc/fsl,tsa.h
+
FREESCALE QUICC ENGINE UCC ETHERNET DRIVER
M: Li Yang <[email protected]>
L: [email protected]
--
2.39.1
The TSA (Time Slot Assigner) purpose is to route some
TDM time-slots to other internal serial controllers.
It is available in some PowerQUICC SoC such as the
MPC885 or MPC866.
It is also available on some Quicc Engine SoCs.
This current version support CPM1 SoCs only and some
enhancement are needed to support Quicc Engine SoCs.
Signed-off-by: Herve Codina <[email protected]>
---
drivers/soc/fsl/qe/Kconfig | 11 +
drivers/soc/fsl/qe/Makefile | 1 +
drivers/soc/fsl/qe/tsa.c | 869 ++++++++++++++++++++++++++++++++++++
drivers/soc/fsl/qe/tsa.h | 42 ++
4 files changed, 923 insertions(+)
create mode 100644 drivers/soc/fsl/qe/tsa.c
create mode 100644 drivers/soc/fsl/qe/tsa.h
diff --git a/drivers/soc/fsl/qe/Kconfig b/drivers/soc/fsl/qe/Kconfig
index 357c5800b112..b0088495c323 100644
--- a/drivers/soc/fsl/qe/Kconfig
+++ b/drivers/soc/fsl/qe/Kconfig
@@ -33,6 +33,17 @@ config UCC
bool
default y if UCC_FAST || UCC_SLOW
+config CPM_TSA
+ tristate "CPM TSA support"
+ depends on OF && HAS_IOMEM
+ depends on CPM1 || COMPILE_TEST
+ help
+ Freescale CPM Time Slot Assigner (TSA)
+ controller.
+
+ This option enables support for this
+ controller
+
config QE_TDM
bool
default y if FSL_UCC_HDLC
diff --git a/drivers/soc/fsl/qe/Makefile b/drivers/soc/fsl/qe/Makefile
index 55a555304f3a..45c961acc81b 100644
--- a/drivers/soc/fsl/qe/Makefile
+++ b/drivers/soc/fsl/qe/Makefile
@@ -4,6 +4,7 @@
#
obj-$(CONFIG_QUICC_ENGINE)+= qe.o qe_common.o qe_ic.o qe_io.o
obj-$(CONFIG_CPM) += qe_common.o
+obj-$(CONFIG_CPM_TSA) += tsa.o
obj-$(CONFIG_UCC) += ucc.o
obj-$(CONFIG_UCC_SLOW) += ucc_slow.o
obj-$(CONFIG_UCC_FAST) += ucc_fast.o
diff --git a/drivers/soc/fsl/qe/tsa.c b/drivers/soc/fsl/qe/tsa.c
new file mode 100644
index 000000000000..90d9a5254d9b
--- /dev/null
+++ b/drivers/soc/fsl/qe/tsa.c
@@ -0,0 +1,869 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * TSA driver
+ *
+ * Copyright 2022 CS GROUP France
+ *
+ * Author: Herve Codina <[email protected]>
+ */
+
+#include "tsa.h"
+#include <dt-bindings/soc/fsl,tsa.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+
+/* TSA SI RAM routing tables entry */
+#define TSA_SIRAM_ENTRY_LAST (1 << 16)
+#define TSA_SIRAM_ENTRY_BYTE (1 << 17)
+#define TSA_SIRAM_ENTRY_CNT(x) (((x) & 0x0f) << 18)
+#define TSA_SIRAM_ENTRY_CSEL_MASK (0x7 << 22)
+#define TSA_SIRAM_ENTRY_CSEL_NU (0x0 << 22)
+#define TSA_SIRAM_ENTRY_CSEL_SCC2 (0x2 << 22)
+#define TSA_SIRAM_ENTRY_CSEL_SCC3 (0x3 << 22)
+#define TSA_SIRAM_ENTRY_CSEL_SCC4 (0x4 << 22)
+#define TSA_SIRAM_ENTRY_CSEL_SMC1 (0x5 << 22)
+#define TSA_SIRAM_ENTRY_CSEL_SMC2 (0x6 << 22)
+
+/* SI mode register (32 bits) */
+#define TSA_SIMODE 0x00
+#define TSA_SIMODE_SMC2 0x80000000
+#define TSA_SIMODE_SMC1 0x00008000
+#define TSA_SIMODE_TDMA(x) ((x) << 0)
+#define TSA_SIMODE_TDMB(x) ((x) << 16)
+#define TSA_SIMODE_TDM_MASK 0x0fff
+#define TSA_SIMODE_TDM_SDM_MASK 0x0c00
+#define TSA_SIMODE_TDM_SDM_NORM 0x0000
+#define TSA_SIMODE_TDM_SDM_ECHO 0x0400
+#define TSA_SIMODE_TDM_SDM_INTL_LOOP 0x0800
+#define TSA_SIMODE_TDM_SDM_LOOP_CTRL 0x0c00
+#define TSA_SIMODE_TDM_RFSD(x) ((x) << 8)
+#define TSA_SIMODE_TDM_DSC 0x0080
+#define TSA_SIMODE_TDM_CRT 0x0040
+#define TSA_SIMODE_TDM_STZ 0x0020
+#define TSA_SIMODE_TDM_CE 0x0010
+#define TSA_SIMODE_TDM_FE 0x0008
+#define TSA_SIMODE_TDM_GM 0x0004
+#define TSA_SIMODE_TDM_TFSD(x) ((x) << 0)
+
+/* SI global mode register (8 bits) */
+#define TSA_SIGMR 0x04
+#define TSA_SIGMR_ENB (1<<3)
+#define TSA_SIGMR_ENA (1<<2)
+#define TSA_SIGMR_RDM_MASK 0x03
+#define TSA_SIGMR_RDM_STATIC_TDMA 0x00
+#define TSA_SIGMR_RDM_DYN_TDMA 0x01
+#define TSA_SIGMR_RDM_STATIC_TDMAB 0x02
+#define TSA_SIGMR_RDM_DYN_TDMAB 0x03
+
+/* SI status register (8 bits) */
+#define TSA_SISTR 0x06
+
+/* SI command register (8 bits) */
+#define TSA_SICMR 0x07
+
+/* SI clock route register (32 bits) */
+#define TSA_SICR 0x0C
+#define TSA_SICR_SCC2(x) ((x) << 8)
+#define TSA_SICR_SCC3(x) ((x) << 16)
+#define TSA_SICR_SCC4(x) ((x) << 24)
+#define TSA_SICR_SCC_MASK 0x0ff
+#define TSA_SICR_SCC_GRX (1 << 7)
+#define TSA_SICR_SCC_SCX_TSA (1 << 6)
+#define TSA_SICR_SCC_RXCS_MASK (0x7 << 3)
+#define TSA_SICR_SCC_RXCS_BRG1 (0x0 << 3)
+#define TSA_SICR_SCC_RXCS_BRG2 (0x1 << 3)
+#define TSA_SICR_SCC_RXCS_BRG3 (0x2 << 3)
+#define TSA_SICR_SCC_RXCS_BRG4 (0x3 << 3)
+#define TSA_SICR_SCC_RXCS_CLK15 (0x4 << 3)
+#define TSA_SICR_SCC_RXCS_CLK26 (0x5 << 3)
+#define TSA_SICR_SCC_RXCS_CLK37 (0x6 << 3)
+#define TSA_SICR_SCC_RXCS_CLK48 (0x7 << 3)
+#define TSA_SICR_SCC_TXCS_MASK (0x7 << 0)
+#define TSA_SICR_SCC_TXCS_BRG1 (0x0 << 0)
+#define TSA_SICR_SCC_TXCS_BRG2 (0x1 << 0)
+#define TSA_SICR_SCC_TXCS_BRG3 (0x2 << 0)
+#define TSA_SICR_SCC_TXCS_BRG4 (0x3 << 0)
+#define TSA_SICR_SCC_TXCS_CLK15 (0x4 << 0)
+#define TSA_SICR_SCC_TXCS_CLK26 (0x5 << 0)
+#define TSA_SICR_SCC_TXCS_CLK37 (0x6 << 0)
+#define TSA_SICR_SCC_TXCS_CLK48 (0x7 << 0)
+
+/* Serial interface RAM pointer register (32 bits) */
+#define TSA_SIRP 0x10
+
+struct tsa_entries_area {
+ void *__iomem entries_start;
+ void *__iomem entries_next;
+ void *__iomem last_entry;
+};
+
+struct tsa_tdm {
+ bool is_enable;
+ struct clk *l1rclk_clk;
+ struct clk *l1rsync_clk;
+ struct clk *l1tclk_clk;
+ struct clk *l1tsync_clk;
+ u32 simode_tdm;
+};
+
+#define TSA_TDMA 0
+#define TSA_TDMB 1
+
+struct tsa {
+ struct device *dev;
+ void *__iomem si_regs;
+ void *__iomem si_ram;
+ resource_size_t si_ram_sz;
+ spinlock_t lock;
+ int tdms; /* TSA_TDMx ORed */
+ struct tsa_tdm tdm[2]; /* TDMa and TDMb */
+ struct tsa_serial {
+ unsigned int id;
+ struct tsa_serial_info info;
+ } serials[6];
+};
+
+static inline struct tsa *tsa_serial_get_tsa(struct tsa_serial *tsa_serial)
+{
+ /* The serials table is indexed by the serial id */
+ return container_of(tsa_serial, struct tsa, serials[tsa_serial->id]);
+}
+
+static inline void tsa_write32(void *__iomem addr, u32 val)
+{
+ iowrite32be(val, addr);
+}
+
+static inline void tsa_write8(void *__iomem addr, u32 val)
+{
+ iowrite8(val, addr);
+}
+
+static inline u32 tsa_read32(void *__iomem addr)
+{
+ return ioread32be(addr);
+}
+
+static inline void tsa_clrbits32(void *__iomem addr, u32 clr)
+{
+ tsa_write32(addr, tsa_read32(addr) & ~clr);
+}
+
+static inline void tsa_clrsetbits32(void *__iomem addr, u32 clr, u32 set)
+{
+ tsa_write32(addr, (tsa_read32(addr) & ~clr) | set);
+}
+
+int tsa_serial_connect(struct tsa_serial *tsa_serial)
+{
+ struct tsa *tsa = tsa_serial_get_tsa(tsa_serial);
+ unsigned long flags;
+ u32 clear;
+ u32 set;
+
+ switch (tsa_serial->id) {
+ case FSL_CPM_TSA_SCC2:
+ clear = TSA_SICR_SCC2(TSA_SICR_SCC_MASK);
+ set = TSA_SICR_SCC2(TSA_SICR_SCC_SCX_TSA);
+ break;
+ case FSL_CPM_TSA_SCC3:
+ clear = TSA_SICR_SCC3(TSA_SICR_SCC_MASK);
+ set = TSA_SICR_SCC3(TSA_SICR_SCC_SCX_TSA);
+ break;
+ case FSL_CPM_TSA_SCC4:
+ clear = TSA_SICR_SCC4(TSA_SICR_SCC_MASK);
+ set = TSA_SICR_SCC4(TSA_SICR_SCC_SCX_TSA);
+ break;
+ default:
+ dev_err(tsa->dev, "Unsupported serial id %u\n", tsa_serial->id);
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&tsa->lock, flags);
+ tsa_clrsetbits32(tsa->si_regs + TSA_SICR, clear, set);
+ spin_unlock_irqrestore(&tsa->lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(tsa_serial_connect);
+
+int tsa_serial_disconnect(struct tsa_serial *tsa_serial)
+{
+ struct tsa *tsa = tsa_serial_get_tsa(tsa_serial);
+ unsigned long flags;
+ u32 clear;
+
+ switch (tsa_serial->id) {
+ case FSL_CPM_TSA_SCC2:
+ clear = TSA_SICR_SCC2(TSA_SICR_SCC_MASK);
+ break;
+ case FSL_CPM_TSA_SCC3:
+ clear = TSA_SICR_SCC3(TSA_SICR_SCC_MASK);
+ break;
+ case FSL_CPM_TSA_SCC4:
+ clear = TSA_SICR_SCC4(TSA_SICR_SCC_MASK);
+ break;
+ default:
+ dev_err(tsa->dev, "Unsupported serial id %u\n", tsa_serial->id);
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&tsa->lock, flags);
+ tsa_clrsetbits32(tsa->si_regs + TSA_SICR, clear, 0);
+ spin_unlock_irqrestore(&tsa->lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(tsa_serial_disconnect);
+
+int tsa_serial_get_info(struct tsa_serial *tsa_serial, struct tsa_serial_info *info)
+{
+ memcpy(info, &tsa_serial->info, sizeof(*info));
+ return 0;
+}
+EXPORT_SYMBOL(tsa_serial_get_info);
+
+static void tsa_init_entries_area(struct tsa *tsa, struct tsa_entries_area *area,
+ u32 tdms, u32 tdm_id, bool is_rx)
+{
+ resource_size_t quarter;
+ resource_size_t half;
+
+ quarter = tsa->si_ram_sz/4;
+ half = tsa->si_ram_sz/2;
+
+ if (tdms == BIT(TSA_TDMA)) {
+ /* Only TDMA */
+ if (is_rx) {
+ /* First half of si_ram */
+ area->entries_start = tsa->si_ram;
+ area->entries_next = area->entries_start + half;
+ area->last_entry = NULL;
+ } else {
+ /* Second half of si_ram */
+ area->entries_start = tsa->si_ram + half;
+ area->entries_next = area->entries_start + half;
+ area->last_entry = NULL;
+ }
+ } else {
+ /* Only TDMB or both TDMs */
+ if (tdm_id == TSA_TDMA) {
+ if (is_rx) {
+ /* First half of first half of si_ram */
+ area->entries_start = tsa->si_ram;
+ area->entries_next = area->entries_start + quarter;
+ area->last_entry = NULL;
+ } else {
+ /* First half of second half of si_ram */
+ area->entries_start = tsa->si_ram + (2 * quarter);
+ area->entries_next = area->entries_start + quarter;
+ area->last_entry = NULL;
+ }
+ } else {
+ if (is_rx) {
+ /* Second half of first half of si_ram */
+ area->entries_start = tsa->si_ram + quarter;
+ area->entries_next = area->entries_start + quarter;
+ area->last_entry = NULL;
+ } else {
+ /* Second half of second half of si_ram */
+ area->entries_start = tsa->si_ram + (3 * quarter);
+ area->entries_next = area->entries_start + quarter;
+ area->last_entry = NULL;
+ }
+ }
+ }
+}
+
+static const char *tsa_serial_id2name(struct tsa *tsa, u32 serial_id)
+{
+ switch (serial_id) {
+ case FSL_CPM_TSA_NU: return "Not used";
+ case FSL_CPM_TSA_SCC2: return "SCC2";
+ case FSL_CPM_TSA_SCC3: return "SCC3";
+ case FSL_CPM_TSA_SCC4: return "SCC4";
+ case FSL_CPM_TSA_SMC1: return "SMC1";
+ case FSL_CPM_TSA_SMC2: return "SMC2";
+ default:
+ break;
+ }
+ return NULL;
+}
+
+static u32 tsa_serial_id2csel(struct tsa *tsa, u32 serial_id)
+{
+ switch (serial_id) {
+ case FSL_CPM_TSA_SCC2: return TSA_SIRAM_ENTRY_CSEL_SCC2;
+ case FSL_CPM_TSA_SCC3: return TSA_SIRAM_ENTRY_CSEL_SCC3;
+ case FSL_CPM_TSA_SCC4: return TSA_SIRAM_ENTRY_CSEL_SCC4;
+ case FSL_CPM_TSA_SMC1: return TSA_SIRAM_ENTRY_CSEL_SMC1;
+ case FSL_CPM_TSA_SMC2: return TSA_SIRAM_ENTRY_CSEL_SMC2;
+ default:
+ break;
+ }
+ return TSA_SIRAM_ENTRY_CSEL_NU;
+}
+
+static int tsa_add_entry(struct tsa *tsa, struct tsa_entries_area *area,
+ u32 count, u32 serial_id)
+{
+ void *__iomem addr;
+ u32 left;
+ u32 val;
+ u32 cnt;
+ u32 nb;
+
+ addr = area->last_entry ? area->last_entry + 4 : area->entries_start;
+
+ nb = DIV_ROUND_UP(count, 8);
+ if ((addr + (nb * 4)) > area->entries_next) {
+ dev_err(tsa->dev, "si ram area full\n");
+ return -ENOSPC;
+ }
+
+ if (area->last_entry) {
+ /* Clear last flag */
+ tsa_clrbits32(area->last_entry, TSA_SIRAM_ENTRY_LAST);
+ }
+
+ left = count;
+ while (left) {
+ val = TSA_SIRAM_ENTRY_BYTE | tsa_serial_id2csel(tsa, serial_id);
+
+ if (left > 16) {
+ cnt = 16;
+ } else {
+ cnt = left;
+ val |= TSA_SIRAM_ENTRY_LAST;
+ area->last_entry = addr;
+ }
+ val |= TSA_SIRAM_ENTRY_CNT(cnt - 1);
+
+ tsa_write32(addr, val);
+ addr += 4;
+ left -= cnt;
+ }
+
+ return 0;
+}
+
+static int tsa_of_parse_tdm_route(struct tsa *tsa, struct device_node *tdm_np,
+ u32 tdms, u32 tdm_id, bool is_rx)
+{
+ struct tsa_entries_area area;
+ const char *route_name;
+ u32 serial_id;
+ int len, i;
+ u32 count;
+ const char *serial_name;
+ struct tsa_serial_info *serial_info;
+ struct tsa_tdm *tdm;
+ int ret;
+ u32 ts;
+
+ route_name = is_rx ? "fsl,rx-ts-routes" : "fsl,tx-ts-routes";
+
+ len = of_property_count_u32_elems(tdm_np, route_name);
+ if (len < 0) {
+ dev_err(tsa->dev, "%pOF: failed to read %s\n", tdm_np, route_name);
+ return len;
+ }
+ if (len % 2 != 0) {
+ dev_err(tsa->dev, "%pOF: wrong %s format\n", tdm_np, route_name);
+ return -EINVAL;
+ }
+
+ tsa_init_entries_area(tsa, &area, tdms, tdm_id, is_rx);
+ ts = 0;
+ for (i = 0; i < len; i += 2) {
+ of_property_read_u32_index(tdm_np, route_name, i, &count);
+ of_property_read_u32_index(tdm_np, route_name, i + 1, &serial_id);
+
+ if (serial_id >= ARRAY_SIZE(tsa->serials)) {
+ dev_err(tsa->dev, "%pOF: invalid serial id (%u)\n",
+ tdm_np, serial_id);
+ return -EINVAL;
+ }
+
+ serial_name = tsa_serial_id2name(tsa, serial_id);
+ if (!serial_name) {
+ dev_err(tsa->dev, "%pOF: unsupported serial id (%u)\n",
+ tdm_np, serial_id);
+ return -EINVAL;
+ }
+
+ dev_dbg(tsa->dev, "tdm_id=%u, %s ts %u..%u -> %s\n",
+ tdm_id, route_name, ts, ts+count-1, serial_name);
+ ts += count;
+
+ ret = tsa_add_entry(tsa, &area, count, serial_id);
+ if (ret)
+ return ret;
+
+ serial_info = &tsa->serials[serial_id].info;
+ tdm = &tsa->tdm[tdm_id];
+ if (is_rx) {
+ serial_info->rx_fs_rate = clk_get_rate(tdm->l1rsync_clk);
+ serial_info->rx_bit_rate = clk_get_rate(tdm->l1rclk_clk);
+ serial_info->nb_rx_ts += count;
+ } else {
+ serial_info->tx_fs_rate = tdm->l1tsync_clk ?
+ clk_get_rate(tdm->l1tsync_clk) :
+ clk_get_rate(tdm->l1rsync_clk);
+ serial_info->tx_bit_rate = tdm->l1tclk_clk ?
+ clk_get_rate(tdm->l1tclk_clk) :
+ clk_get_rate(tdm->l1rclk_clk);
+ serial_info->nb_tx_ts += count;
+ }
+ }
+ return 0;
+}
+
+static inline int tsa_of_parse_tdm_rx_route(struct tsa *tsa,
+ struct device_node *tdm_np,
+ u32 tdms, u32 tdm_id)
+{
+ return tsa_of_parse_tdm_route(tsa, tdm_np, tdms, tdm_id, true);
+}
+
+static inline int tsa_of_parse_tdm_tx_route(struct tsa *tsa,
+ struct device_node *tdm_np,
+ u32 tdms, u32 tdm_id)
+{
+ return tsa_of_parse_tdm_route(tsa, tdm_np, tdms, tdm_id, false);
+}
+
+static int tsa_of_parse_tdms(struct tsa *tsa, struct device_node *np)
+{
+ struct device_node *tdm_np;
+ struct tsa_tdm *tdm;
+ struct clk *clk;
+ const char *mode;
+ u32 tdm_id, val;
+ int ret;
+ int i;
+
+ tsa->tdms = 0;
+ tsa->tdm[0].is_enable = false;
+ tsa->tdm[1].is_enable = false;
+
+ for_each_available_child_of_node(np, tdm_np) {
+ ret = of_property_read_u32(tdm_np, "reg", &tdm_id);
+ if (ret) {
+ dev_err(tsa->dev, "%pOF: failed to read reg\n", tdm_np);
+ of_node_put(tdm_np);
+ return ret;
+ }
+ switch (tdm_id) {
+ case 0:
+ tsa->tdms |= BIT(TSA_TDMA);
+ break;
+ case 1:
+ tsa->tdms |= BIT(TSA_TDMB);
+ break;
+ default:
+ dev_err(tsa->dev, "%pOF: Invalid tdm_id (%u)\n", tdm_np,
+ tdm_id);
+ of_node_put(tdm_np);
+ return -EINVAL;
+ }
+ }
+
+ for_each_available_child_of_node(np, tdm_np) {
+ ret = of_property_read_u32(tdm_np, "reg", &tdm_id);
+ if (ret) {
+ dev_err(tsa->dev, "%pOF: failed to read reg\n", tdm_np);
+ of_node_put(tdm_np);
+ return ret;
+ }
+
+ tdm = &tsa->tdm[tdm_id];
+
+ mode = "disabled";
+ ret = of_property_read_string(tdm_np, "fsl,diagnostic-mode", &mode);
+ if (ret && ret != -EINVAL) {
+ dev_err(tsa->dev, "%pOF: failed to read fsl,diagnostic-mode\n",
+ tdm_np);
+ of_node_put(tdm_np);
+ return ret;
+ }
+ if (!strcmp(mode, "disabled")) {
+ tdm->simode_tdm |= TSA_SIMODE_TDM_SDM_NORM;
+ } else if (!strcmp(mode, "echo")) {
+ tdm->simode_tdm |= TSA_SIMODE_TDM_SDM_ECHO;
+ } else if (!strcmp(mode, "internal-loopback")) {
+ tdm->simode_tdm |= TSA_SIMODE_TDM_SDM_INTL_LOOP;
+ } else if (!strcmp(mode, "control-loopback")) {
+ tdm->simode_tdm |= TSA_SIMODE_TDM_SDM_LOOP_CTRL;
+ } else {
+ dev_err(tsa->dev, "%pOF: Invalid fsl,diagnostic-mode (%s)\n",
+ tdm_np, mode);
+ of_node_put(tdm_np);
+ return -EINVAL;
+ }
+
+ val = 0;
+ ret = of_property_read_u32(tdm_np, "fsl,rx-frame-sync-delay-bits",
+ &val);
+ if (ret && ret != -EINVAL) {
+ dev_err(tsa->dev,
+ "%pOF: failed to read fsl,rx-frame-sync-delay-bits\n",
+ tdm_np);
+ of_node_put(tdm_np);
+ return ret;
+ }
+ if (val > 3) {
+ dev_err(tsa->dev,
+ "%pOF: Invalid fsl,rx-frame-sync-delay-bits (%u)\n",
+ tdm_np, val);
+ of_node_put(tdm_np);
+ return -EINVAL;
+ }
+ tdm->simode_tdm |= TSA_SIMODE_TDM_RFSD(val);
+
+ val = 0;
+ ret = of_property_read_u32(tdm_np, "fsl,tx-frame-sync-delay-bits",
+ &val);
+ if (ret && ret != -EINVAL) {
+ dev_err(tsa->dev,
+ "%pOF: failed to read fsl,tx-frame-sync-delay-bits\n",
+ tdm_np);
+ of_node_put(tdm_np);
+ return ret;
+ }
+ if (val > 3) {
+ dev_err(tsa->dev,
+ "%pOF: Invalid fsl,tx-frame-sync-delay-bits (%u)\n",
+ tdm_np, val);
+ of_node_put(tdm_np);
+ return -EINVAL;
+ }
+ tdm->simode_tdm |= TSA_SIMODE_TDM_TFSD(val);
+
+ if (of_property_read_bool(tdm_np, "fsl,common-rxtx-pins"))
+ tdm->simode_tdm |= TSA_SIMODE_TDM_CRT;
+
+ if (of_property_read_bool(tdm_np, "fsl,clock-falling-edge"))
+ tdm->simode_tdm |= TSA_SIMODE_TDM_CE;
+
+ if (of_property_read_bool(tdm_np, "fsl,fsync-rising-edge"))
+ tdm->simode_tdm |= TSA_SIMODE_TDM_FE;
+
+ if (of_property_read_bool(tdm_np, "fsl,double-speed-clock"))
+ tdm->simode_tdm |= TSA_SIMODE_TDM_DSC;
+
+ clk = of_clk_get_by_name(tdm_np, "l1rsync");
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ of_node_put(tdm_np);
+ goto err;
+ }
+ ret = clk_prepare_enable(clk);
+ if (ret) {
+ clk_put(clk);
+ of_node_put(tdm_np);
+ goto err;
+ }
+ tdm->l1rsync_clk = clk;
+
+ clk = of_clk_get_by_name(tdm_np, "l1rclk");
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ of_node_put(tdm_np);
+ goto err;
+ }
+ ret = clk_prepare_enable(clk);
+ if (ret) {
+ clk_put(clk);
+ of_node_put(tdm_np);
+ goto err;
+ }
+ tdm->l1rclk_clk = clk;
+
+ if (!(tdm->simode_tdm & TSA_SIMODE_TDM_CRT)) {
+ clk = of_clk_get_by_name(tdm_np, "l1tsync");
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ of_node_put(tdm_np);
+ goto err;
+ }
+ ret = clk_prepare_enable(clk);
+ if (ret) {
+ clk_put(clk);
+ of_node_put(tdm_np);
+ goto err;
+ }
+ tdm->l1tsync_clk = clk;
+
+ clk = of_clk_get_by_name(tdm_np, "l1tclk");
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ of_node_put(tdm_np);
+ goto err;
+ }
+ ret = clk_prepare_enable(clk);
+ if (ret) {
+ clk_put(clk);
+ of_node_put(tdm_np);
+ goto err;
+ }
+ tdm->l1tclk_clk = clk;
+ }
+
+ ret = tsa_of_parse_tdm_rx_route(tsa, tdm_np, tsa->tdms, tdm_id);
+ if (ret) {
+ of_node_put(tdm_np);
+ goto err;
+ }
+
+ ret = tsa_of_parse_tdm_tx_route(tsa, tdm_np, tsa->tdms, tdm_id);
+ if (ret) {
+ of_node_put(tdm_np);
+ goto err;
+ }
+
+ tdm->is_enable = true;
+ }
+ return 0;
+
+err:
+ for (i = 0; i < 2; i++) {
+ if (tsa->tdm[i].l1rsync_clk) {
+ clk_disable_unprepare(tsa->tdm[i].l1rsync_clk);
+ clk_put(tsa->tdm[i].l1rsync_clk);
+ }
+ if (tsa->tdm[i].l1rclk_clk) {
+ clk_disable_unprepare(tsa->tdm[i].l1rclk_clk);
+ clk_put(tsa->tdm[i].l1rclk_clk);
+ }
+ if (tsa->tdm[i].l1tsync_clk) {
+ clk_disable_unprepare(tsa->tdm[i].l1rsync_clk);
+ clk_put(tsa->tdm[i].l1rsync_clk);
+ }
+ if (tsa->tdm[i].l1tclk_clk) {
+ clk_disable_unprepare(tsa->tdm[i].l1rclk_clk);
+ clk_put(tsa->tdm[i].l1rclk_clk);
+ }
+ }
+ return ret;
+}
+
+static void tsa_init_si_ram(struct tsa *tsa)
+{
+ resource_size_t i;
+
+ /* Fill all entries as the last one */
+ for (i = 0; i < tsa->si_ram_sz; i += 4)
+ tsa_write32(tsa->si_ram + i, TSA_SIRAM_ENTRY_LAST);
+}
+
+static int tsa_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct resource *res;
+ struct tsa *tsa;
+ unsigned int i;
+ u32 val;
+ int ret;
+
+ tsa = devm_kzalloc(&pdev->dev, sizeof(*tsa), GFP_KERNEL);
+ if (!tsa)
+ return -ENOMEM;
+
+ tsa->dev = &pdev->dev;
+
+ for (i = 0; i < ARRAY_SIZE(tsa->serials); i++)
+ tsa->serials[i].id = i;
+
+ spin_lock_init(&tsa->lock);
+
+ tsa->si_regs = devm_platform_ioremap_resource_byname(pdev, "si_regs");
+ if (IS_ERR(tsa->si_regs))
+ return PTR_ERR(tsa->si_regs);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "si_ram");
+ if (!res) {
+ dev_err(tsa->dev, "si_ram resource missing\n");
+ return -EINVAL;
+ }
+ tsa->si_ram_sz = resource_size(res);
+ tsa->si_ram = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(tsa->si_ram))
+ return PTR_ERR(tsa->si_ram);
+
+ tsa_init_si_ram(tsa);
+
+ ret = tsa_of_parse_tdms(tsa, np);
+ if (ret)
+ return ret;
+
+ /* Set SIMODE */
+ val = 0;
+ if (tsa->tdm[0].is_enable)
+ val |= TSA_SIMODE_TDMA(tsa->tdm[0].simode_tdm);
+ if (tsa->tdm[1].is_enable)
+ val |= TSA_SIMODE_TDMB(tsa->tdm[1].simode_tdm);
+
+ tsa_clrsetbits32(tsa->si_regs + TSA_SIMODE,
+ TSA_SIMODE_TDMA(TSA_SIMODE_TDM_MASK) |
+ TSA_SIMODE_TDMB(TSA_SIMODE_TDM_MASK),
+ val);
+
+ /* Set SIGMR */
+ val = (tsa->tdms == BIT(TSA_TDMA)) ?
+ TSA_SIGMR_RDM_STATIC_TDMA : TSA_SIGMR_RDM_STATIC_TDMAB;
+ if (tsa->tdms & BIT(TSA_TDMA))
+ val |= TSA_SIGMR_ENA;
+ if (tsa->tdms & BIT(TSA_TDMB))
+ val |= TSA_SIGMR_ENB;
+ tsa_write8(tsa->si_regs + TSA_SIGMR, val);
+
+ platform_set_drvdata(pdev, tsa);
+
+ return 0;
+}
+
+static int tsa_remove(struct platform_device *pdev)
+{
+ struct tsa *tsa = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ if (tsa->tdm[i].l1rsync_clk) {
+ clk_disable_unprepare(tsa->tdm[i].l1rsync_clk);
+ clk_put(tsa->tdm[i].l1rsync_clk);
+ }
+ if (tsa->tdm[i].l1rclk_clk) {
+ clk_disable_unprepare(tsa->tdm[i].l1rclk_clk);
+ clk_put(tsa->tdm[i].l1rclk_clk);
+ }
+ if (tsa->tdm[i].l1tsync_clk) {
+ clk_disable_unprepare(tsa->tdm[i].l1rsync_clk);
+ clk_put(tsa->tdm[i].l1rsync_clk);
+ }
+ if (tsa->tdm[i].l1tclk_clk) {
+ clk_disable_unprepare(tsa->tdm[i].l1rclk_clk);
+ clk_put(tsa->tdm[i].l1rclk_clk);
+ }
+ }
+ return 0;
+}
+
+static const struct of_device_id tsa_id_table[] = {
+ { .compatible = "fsl,cpm1-tsa" },
+ {} /* sentinel */
+};
+MODULE_DEVICE_TABLE(of, tsa_id_table);
+
+static struct platform_driver tsa_driver = {
+ .driver = {
+ .name = "fsl-tsa",
+ .of_match_table = of_match_ptr(tsa_id_table),
+ },
+ .probe = tsa_probe,
+ .remove = tsa_remove,
+};
+module_platform_driver(tsa_driver);
+
+struct tsa_serial *tsa_serial_get_byphandle(struct device_node *np,
+ const char *phandle_name)
+{
+ struct of_phandle_args out_args;
+ struct platform_device *pdev;
+ struct tsa_serial *tsa_serial;
+ struct tsa *tsa;
+ int ret;
+
+ ret = of_parse_phandle_with_fixed_args(np, phandle_name, 1, 0, &out_args);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ if (!of_match_node(tsa_driver.driver.of_match_table, out_args.np)) {
+ of_node_put(out_args.np);
+ return ERR_PTR(-EINVAL);
+ }
+
+ pdev = of_find_device_by_node(out_args.np);
+ of_node_put(out_args.np);
+ if (!pdev)
+ return ERR_PTR(-ENODEV);
+
+ tsa = platform_get_drvdata(pdev);
+ if (!tsa) {
+ platform_device_put(pdev);
+ return ERR_PTR(-EPROBE_DEFER);
+ }
+
+ if (out_args.args_count != 1) {
+ platform_device_put(pdev);
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (out_args.args[0] >= ARRAY_SIZE(tsa->serials)) {
+ platform_device_put(pdev);
+ return ERR_PTR(-EINVAL);
+ }
+
+ tsa_serial = &tsa->serials[out_args.args[0]];
+
+ /*
+ * Be sure that the serial id matches the phandle arg.
+ * The tsa_serials table is indexed by serial ids. The serial id is set
+ * during the probe() call and needs to be coherent.
+ */
+ if (WARN_ON(tsa_serial->id != out_args.args[0])) {
+ platform_device_put(pdev);
+ return ERR_PTR(-EINVAL);
+ }
+
+ return tsa_serial;
+}
+EXPORT_SYMBOL(tsa_serial_get_byphandle);
+
+void tsa_serial_put(struct tsa_serial *tsa_serial)
+{
+ struct tsa *tsa = tsa_serial_get_tsa(tsa_serial);
+
+ put_device(tsa->dev);
+}
+EXPORT_SYMBOL(tsa_serial_put);
+
+static void devm_tsa_serial_release(struct device *dev, void *res)
+{
+ struct tsa_serial **tsa_serial = res;
+
+ tsa_serial_put(*tsa_serial);
+}
+
+struct tsa_serial *devm_tsa_serial_get_byphandle(struct device *dev,
+ struct device_node *np,
+ const char *phandle_name)
+{
+ struct tsa_serial *tsa_serial;
+ struct tsa_serial **dr;
+
+ dr = devres_alloc(devm_tsa_serial_release, sizeof(*dr), GFP_KERNEL);
+ if (!dr)
+ return ERR_PTR(-ENOMEM);
+
+ tsa_serial = tsa_serial_get_byphandle(np, phandle_name);
+ if (!IS_ERR(tsa_serial)) {
+ *dr = tsa_serial;
+ devres_add(dev, dr);
+ } else {
+ devres_free(dr);
+ }
+
+ return tsa_serial;
+}
+EXPORT_SYMBOL(devm_tsa_serial_get_byphandle);
+
+MODULE_AUTHOR("Herve Codina <[email protected]>");
+MODULE_DESCRIPTION("CPM TSA driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/soc/fsl/qe/tsa.h b/drivers/soc/fsl/qe/tsa.h
new file mode 100644
index 000000000000..d9df89b6da3e
--- /dev/null
+++ b/drivers/soc/fsl/qe/tsa.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * TSA management
+ *
+ * Copyright 2022 CS GROUP France
+ *
+ * Author: Herve Codina <[email protected]>
+ */
+#ifndef __SOC_FSL_TSA_H__
+#define __SOC_FSL_TSA_H__
+
+#include <linux/types.h>
+
+struct device_node;
+struct device;
+struct tsa_serial;
+
+struct tsa_serial *tsa_serial_get_byphandle(struct device_node *np,
+ const char *phandle_name);
+void tsa_serial_put(struct tsa_serial *tsa_serial);
+struct tsa_serial *devm_tsa_serial_get_byphandle(struct device *dev,
+ struct device_node *np,
+ const char *phandle_name);
+
+/* Connect and disconnect the TSA serial */
+int tsa_serial_connect(struct tsa_serial *tsa_serial);
+int tsa_serial_disconnect(struct tsa_serial *tsa_serial);
+
+/* Cell information */
+struct tsa_serial_info {
+ unsigned long rx_fs_rate;
+ unsigned long rx_bit_rate;
+ u8 nb_rx_ts;
+ unsigned long tx_fs_rate;
+ unsigned long tx_bit_rate;
+ u8 nb_tx_ts;
+};
+
+/* Get information */
+int tsa_serial_get_info(struct tsa_serial *tsa_serial, struct tsa_serial_info *info);
+
+#endif /* __SOC_FSL_TSA_H__ */
--
2.39.1
The CPM1 command mask is defined for use with the standard
CPM1 command register as described in the user's manual:
0 |1 3|4 7|8 11|12 14| 15|
RST| - |OPCODE|CH_NUM| - |FLG|
In the QMC extension the CPM1 command register is redefined
(QMC supplement user's manuel) with the following mapping:
0 |1 3|4 7|8 13|14| 15|
RST|QMC OPCODE| 1110|CHANNEL_NUMBER| -|FLG|
Extend the check command mask in order to support both the
standard CH_NUM field and the QMC extension CHANNEL_NUMBER
field.
Signed-off-by: Herve Codina <[email protected]>
Acked-by: Christophe Leroy <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
---
arch/powerpc/platforms/8xx/cpm1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/8xx/cpm1.c b/arch/powerpc/platforms/8xx/cpm1.c
index 8ef1f4392086..6b828b9f90d9 100644
--- a/arch/powerpc/platforms/8xx/cpm1.c
+++ b/arch/powerpc/platforms/8xx/cpm1.c
@@ -100,7 +100,7 @@ int cpm_command(u32 command, u8 opcode)
int i, ret;
unsigned long flags;
- if (command & 0xffffff0f)
+ if (command & 0xffffff03)
return -EINVAL;
spin_lock_irqsave(&cmd_lock, flags);
--
2.39.1
Add support for the QMC (QUICC Multichannel Controller)
available in some PowerQUICC SoC such as MPC885 or MPC866.
Signed-off-by: Herve Codina <[email protected]>
---
.../soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 172 ++++++++++++++++++
1 file changed, 172 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
diff --git a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
new file mode 100644
index 000000000000..cb3994c412dd
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
@@ -0,0 +1,172 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PowerQUICC CPM QUICC Multichannel Controller (QMC)
+
+maintainers:
+ - Herve Codina <[email protected]>
+
+description:
+ The QMC (QUICC Multichannel Controller) emulates up to 64 channels within one
+ serial controller using the same TDM physical interface routed from TSA.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - fsl,mpc885-scc-qmc
+ - fsl,mpc866-scc-qmc
+ - const: fsl,cpm1-scc-qmc
+
+ reg:
+ items:
+ - description: SCC (Serial communication controller) register base
+ - description: SCC parameter ram base
+ - description: Dual port ram base
+
+ reg-names:
+ items:
+ - const: scc_regs
+ - const: scc_pram
+ - const: dpram
+
+ interrupts:
+ maxItems: 1
+ description: SCC interrupt line in the CPM interrupt controller
+
+ fsl,tsa-serial:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description: phandle to TSA node
+ - enum: [1, 2, 3]
+ description: |
+ TSA serial interface (dt-bindings/soc/fsl,tsa.h defines these
+ values)
+ - 1: SCC2
+ - 2: SCC3
+ - 3: SCC4
+ description:
+ Should be a phandle/number pair. The phandle to TSA node and the TSA
+ serial interface to use.
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ '#fsl,chan-cells':
+ $ref: /schemas/types.yaml#/definitions/uint32
+ const: 1
+ description:
+ QMC consumers that use a phandle to QMC need to pass the channel number
+ with this phandle.
+ For instance "fsl,qmc-chan = <&qmc 16>;".
+
+patternProperties:
+ '^channel@([0-9]|[1-5][0-9]|6[0-3])$':
+ description:
+ A channel managed by this controller
+ type: object
+
+ properties:
+ reg:
+ minimum: 0
+ maximum: 63
+ description:
+ The channel number
+
+ fsl,operational-mode:
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [transparent, hdlc]
+ default: transparent
+ description: |
+ The channel operational mode
+ - hdlc: The channel handles HDLC frames
+ - transparent: The channel handles raw data without any processing
+
+ fsl,reverse-data:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ The bit order as seen on the channels is reversed,
+ transmitting/receiving the MSB of each octet first.
+ This flag is used only in 'transparent' mode.
+
+ fsl,tx-ts-mask:
+ $ref: /schemas/types.yaml#/definitions/uint64
+ description:
+ Channel assigned Tx time-slots within the Tx time-slots routed by the
+ TSA to this cell.
+
+ fsl,rx-ts-mask:
+ $ref: /schemas/types.yaml#/definitions/uint64
+ description:
+ Channel assigned Rx time-slots within the Rx time-slots routed by the
+ TSA to this cell.
+
+ required:
+ - reg
+ - fsl,tx-ts-mask
+ - fsl,rx-ts-mask
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - fsl,tsa-serial
+ - '#address-cells'
+ - '#size-cells'
+ - '#fsl,chan-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/soc/fsl,tsa.h>
+
+ qmc@a60 {
+ compatible = "fsl,mpc885-scc-qmc", "fsl,cpm1-scc-qmc";
+ reg = <0xa60 0x20>,
+ <0x3f00 0xc0>,
+ <0x2000 0x1000>;
+ reg-names = "scc_regs", "scc_pram", "dpram";
+ interrupts = <27>;
+ interrupt-parent = <&CPM_PIC>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #fsl,chan-cells = <1>;
+
+ fsl,tsa-serial = <&tsa FSL_CPM_TSA_SCC4>;
+
+ channel@16 {
+ /* Ch16 : First 4 even TS from all routed from TSA */
+ reg = <16>;
+ fsl,mode = "transparent";
+ fsl,reverse-data;
+ fsl,tx-ts-mask = <0x00000000 0x000000aa>;
+ fsl,rx-ts-mask = <0x00000000 0x000000aa>;
+ };
+
+ channel@17 {
+ /* Ch17 : First 4 odd TS from all routed from TSA */
+ reg = <17>;
+ fsl,mode = "transparent";
+ fsl,reverse-data;
+ fsl,tx-ts-mask = <0x00000000 0x00000055>;
+ fsl,rx-ts-mask = <0x00000000 0x00000055>;
+ };
+
+ channel@19 {
+ /* Ch19 : 8 TS (TS 8..15) from all routed from TSA */
+ reg = <19>;
+ fsl,mode = "hdlc";
+ fsl,tx-ts-mask = <0x00000000 0x0000ff00>;
+ fsl,rx-ts-mask = <0x00000000 0x0000ff00>;
+ };
+ };
--
2.39.1
After contributing the driver, add myself as the maintainer
for the Freescale QMC controller.
Signed-off-by: Herve Codina <[email protected]>
---
MAINTAINERS | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 0cfedb2f712c..f8d0981a16ca 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8372,6 +8372,14 @@ S: Maintained
F: drivers/soc/fsl/qe/
F: include/soc/fsl/qe/
+FREESCALE QUICC ENGINE QMC DRIVER
+M: Herve Codina <[email protected]>
+L: [email protected]
+S: Maintained
+F: Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
+F: drivers/soc/fsl/qe/qmc.c
+F: include/soc/fsl/qe/qmc.h
+
FREESCALE QUICC ENGINE TSA DRIVER
M: Herve Codina <[email protected]>
L: [email protected]
--
2.39.1
The QMC (QUICC Multichannel Controller) emulates up to 64
channels within one serial controller using the same TDM
physical interface routed from the TSA.
It is available in some PowerQUICC SoC such as the
MPC885 or MPC866.
It is also available on some Quicc Engine SoCs.
This current version support CPM1 SoCs only and some
enhancement are needed to support Quicc Engine SoCs.
Signed-off-by: Herve Codina <[email protected]>
Acked-by: Li Yang <[email protected]>
---
drivers/soc/fsl/qe/Kconfig | 12 +
drivers/soc/fsl/qe/Makefile | 1 +
drivers/soc/fsl/qe/qmc.c | 1533 +++++++++++++++++++++++++++++++++++
include/soc/fsl/qe/qmc.h | 71 ++
4 files changed, 1617 insertions(+)
create mode 100644 drivers/soc/fsl/qe/qmc.c
create mode 100644 include/soc/fsl/qe/qmc.h
diff --git a/drivers/soc/fsl/qe/Kconfig b/drivers/soc/fsl/qe/Kconfig
index b0088495c323..f90cfdf0c763 100644
--- a/drivers/soc/fsl/qe/Kconfig
+++ b/drivers/soc/fsl/qe/Kconfig
@@ -44,6 +44,18 @@ config CPM_TSA
This option enables support for this
controller
+config CPM_QMC
+ tristate "CPM QMC support"
+ depends on OF && HAS_IOMEM
+ depends on CPM1 || (SOC_FSL && COMPILE_TEST)
+ depends on CPM_TSA
+ help
+ Freescale CPM QUICC Multichannel Controller
+ (QMC)
+
+ This option enables support for this
+ controller
+
config QE_TDM
bool
default y if FSL_UCC_HDLC
diff --git a/drivers/soc/fsl/qe/Makefile b/drivers/soc/fsl/qe/Makefile
index 45c961acc81b..ec8506e13113 100644
--- a/drivers/soc/fsl/qe/Makefile
+++ b/drivers/soc/fsl/qe/Makefile
@@ -5,6 +5,7 @@
obj-$(CONFIG_QUICC_ENGINE)+= qe.o qe_common.o qe_ic.o qe_io.o
obj-$(CONFIG_CPM) += qe_common.o
obj-$(CONFIG_CPM_TSA) += tsa.o
+obj-$(CONFIG_CPM_QMC) += qmc.o
obj-$(CONFIG_UCC) += ucc.o
obj-$(CONFIG_UCC_SLOW) += ucc_slow.o
obj-$(CONFIG_UCC_FAST) += ucc_fast.o
diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c
new file mode 100644
index 000000000000..cfa7207353e0
--- /dev/null
+++ b/drivers/soc/fsl/qe/qmc.c
@@ -0,0 +1,1533 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * QMC driver
+ *
+ * Copyright 2022 CS GROUP France
+ *
+ * Author: Herve Codina <[email protected]>
+ */
+
+#include <soc/fsl/qe/qmc.h>
+#include <linux/dma-mapping.h>
+#include <linux/hdlc.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <soc/fsl/cpm.h>
+#include <sysdev/fsl_soc.h>
+#include "tsa.h"
+
+/* SCC general mode register high (32 bits) */
+#define SCC_GSMRL 0x00
+#define SCC_GSMRL_ENR (1 << 5)
+#define SCC_GSMRL_ENT (1 << 4)
+#define SCC_GSMRL_MODE_QMC (0x0A << 0)
+
+/* SCC general mode register low (32 bits) */
+#define SCC_GSMRH 0x04
+#define SCC_GSMRH_CTSS (1 << 7)
+#define SCC_GSMRH_CDS (1 << 8)
+#define SCC_GSMRH_CTSP (1 << 9)
+#define SCC_GSMRH_CDP (1 << 10)
+
+/* SCC event register (16 bits) */
+#define SCC_SCCE 0x10
+#define SCC_SCCE_IQOV (1 << 3)
+#define SCC_SCCE_GINT (1 << 2)
+#define SCC_SCCE_GUN (1 << 1)
+#define SCC_SCCE_GOV (1 << 0)
+
+/* SCC mask register (16 bits) */
+#define SCC_SCCM 0x14
+/* Multichannel base pointer (32 bits) */
+#define QMC_GBL_MCBASE 0x00
+/* Multichannel controller state (16 bits) */
+#define QMC_GBL_QMCSTATE 0x04
+/* Maximum receive buffer length (16 bits) */
+#define QMC_GBL_MRBLR 0x06
+/* Tx time-slot assignment table pointer (16 bits) */
+#define QMC_GBL_TX_S_PTR 0x08
+/* Rx pointer (16 bits) */
+#define QMC_GBL_RXPTR 0x0A
+/* Global receive frame threshold (16 bits) */
+#define QMC_GBL_GRFTHR 0x0C
+/* Global receive frame count (16 bits) */
+#define QMC_GBL_GRFCNT 0x0E
+/* Multichannel interrupt base address (32 bits) */
+#define QMC_GBL_INTBASE 0x10
+/* Multichannel interrupt pointer (32 bits) */
+#define QMC_GBL_INTPTR 0x14
+/* Rx time-slot assignment table pointer (16 bits) */
+#define QMC_GBL_RX_S_PTR 0x18
+/* Tx pointer (16 bits) */
+#define QMC_GBL_TXPTR 0x1A
+/* CRC constant (32 bits) */
+#define QMC_GBL_C_MASK32 0x1C
+/* Time slot assignment table Rx (32 x 16 bits) */
+#define QMC_GBL_TSATRX 0x20
+/* Time slot assignment table Tx (32 x 16 bits) */
+#define QMC_GBL_TSATTX 0x60
+/* CRC constant (16 bits) */
+#define QMC_GBL_C_MASK16 0xA0
+
+/* TSA entry (16bit entry in TSATRX and TSATTX) */
+#define QMC_TSA_VALID (1 << 15)
+#define QMC_TSA_WRAP (1 << 14)
+#define QMC_TSA_MASK (0x303F)
+#define QMC_TSA_CHANNEL(x) ((x) << 6)
+
+/* Tx buffer descriptor base address (16 bits, offset from MCBASE) */
+#define QMC_SPE_TBASE 0x00
+
+/* Channel mode register (16 bits) */
+#define QMC_SPE_CHAMR 0x02
+#define QMC_SPE_CHAMR_MODE_HDLC (1 << 15)
+#define QMC_SPE_CHAMR_MODE_TRANSP ((0 << 15) | (1 << 13))
+#define QMC_SPE_CHAMR_ENT (1 << 12)
+#define QMC_SPE_CHAMR_POL (1 << 8)
+#define QMC_SPE_CHAMR_HDLC_IDLM (1 << 13)
+#define QMC_SPE_CHAMR_HDLC_CRC (1 << 7)
+#define QMC_SPE_CHAMR_HDLC_NOF (0x0f << 0)
+#define QMC_SPE_CHAMR_TRANSP_RD (1 << 14)
+#define QMC_SPE_CHAMR_TRANSP_SYNC (1 << 10)
+
+/* Tx internal state (32 bits) */
+#define QMC_SPE_TSTATE 0x04
+/* Tx buffer descriptor pointer (16 bits) */
+#define QMC_SPE_TBPTR 0x0C
+/* Zero-insertion state (32 bits) */
+#define QMC_SPE_ZISTATE 0x14
+/* Channel’s interrupt mask flags (16 bits) */
+#define QMC_SPE_INTMSK 0x1C
+/* Rx buffer descriptor base address (16 bits, offset from MCBASE) */
+#define QMC_SPE_RBASE 0x20
+/* HDLC: Maximum frame length register (16 bits) */
+#define QMC_SPE_MFLR 0x22
+/* TRANSPARENT: Transparent maximum receive length (16 bits) */
+#define QMC_SPE_TMRBLR 0x22
+/* Rx internal state (32 bits) */
+#define QMC_SPE_RSTATE 0x24
+/* Rx buffer descriptor pointer (16 bits) */
+#define QMC_SPE_RBPTR 0x2C
+/* Packs 4 bytes to 1 long word before writing to buffer (32 bits) */
+#define QMC_SPE_RPACK 0x30
+/* Zero deletion state (32 bits) */
+#define QMC_SPE_ZDSTATE 0x34
+
+/* Transparent synchronization (16 bits) */
+#define QMC_SPE_TRNSYNC 0x3C
+#define QMC_SPE_TRNSYNC_RX(x) ((x) << 8)
+#define QMC_SPE_TRNSYNC_TX(x) ((x) << 0)
+
+/* Interrupt related registers bits */
+#define QMC_INT_V (1 << 15)
+#define QMC_INT_W (1 << 14)
+#define QMC_INT_NID (1 << 13)
+#define QMC_INT_IDL (1 << 12)
+#define QMC_INT_GET_CHANNEL(x) (((x) & 0x0FC0) >> 6)
+#define QMC_INT_MRF (1 << 5)
+#define QMC_INT_UN (1 << 4)
+#define QMC_INT_RXF (1 << 3)
+#define QMC_INT_BSY (1 << 2)
+#define QMC_INT_TXB (1 << 1)
+#define QMC_INT_RXB (1 << 0)
+
+/* BD related registers bits */
+#define QMC_BD_RX_E (1 << 15)
+#define QMC_BD_RX_W (1 << 13)
+#define QMC_BD_RX_I (1 << 12)
+#define QMC_BD_RX_L (1 << 11)
+#define QMC_BD_RX_F (1 << 10)
+#define QMC_BD_RX_CM (1 << 9)
+#define QMC_BD_RX_UB (1 << 7)
+#define QMC_BD_RX_LG (1 << 5)
+#define QMC_BD_RX_NO (1 << 4)
+#define QMC_BD_RX_AB (1 << 3)
+#define QMC_BD_RX_CR (1 << 2)
+
+#define QMC_BD_TX_R (1 << 15)
+#define QMC_BD_TX_W (1 << 13)
+#define QMC_BD_TX_I (1 << 12)
+#define QMC_BD_TX_L (1 << 11)
+#define QMC_BD_TX_TC (1 << 10)
+#define QMC_BD_TX_CM (1 << 9)
+#define QMC_BD_TX_UB (1 << 7)
+#define QMC_BD_TX_PAD (0x0f << 0)
+
+/* Numbers of BDs and interrupt items */
+#define QMC_NB_TXBDS 8
+#define QMC_NB_RXBDS 8
+#define QMC_NB_INTS 128
+
+struct qmc_xfer_desc {
+ union {
+ void (*tx_complete)(void *context);
+ void (*rx_complete)(void *context, size_t length);
+ };
+ void *context;
+};
+
+struct qmc_chan {
+ struct list_head list;
+ unsigned int id;
+ struct qmc *qmc;
+ void *__iomem s_param;
+ enum qmc_mode mode;
+ u64 tx_ts_mask;
+ u64 rx_ts_mask;
+ bool is_reverse_data;
+
+ spinlock_t tx_lock;
+ cbd_t __iomem *txbds;
+ cbd_t __iomem *txbd_free;
+ cbd_t __iomem *txbd_done;
+ struct qmc_xfer_desc tx_desc[QMC_NB_TXBDS];
+ u64 nb_tx_underrun;
+ bool is_tx_stopped;
+
+ spinlock_t rx_lock;
+ cbd_t __iomem *rxbds;
+ cbd_t __iomem *rxbd_free;
+ cbd_t __iomem *rxbd_done;
+ struct qmc_xfer_desc rx_desc[QMC_NB_RXBDS];
+ u64 nb_rx_busy;
+ int rx_pending;
+ bool is_rx_halted;
+ bool is_rx_stopped;
+};
+
+struct qmc {
+ struct device *dev;
+ struct tsa_serial *tsa_serial;
+ void *__iomem scc_regs;
+ void *__iomem scc_pram;
+ void *__iomem dpram;
+ u16 scc_pram_offset;
+ cbd_t __iomem *bd_table;
+ dma_addr_t bd_dma_addr;
+ size_t bd_size;
+ u16 __iomem *int_table;
+ u16 __iomem *int_curr;
+ dma_addr_t int_dma_addr;
+ size_t int_size;
+ struct list_head chan_head;
+ struct qmc_chan *chans[64];
+};
+
+static inline void qmc_write16(void *__iomem addr, u16 val)
+{
+ iowrite16be(val, addr);
+}
+
+static inline u16 qmc_read16(void *__iomem addr)
+{
+ return ioread16be(addr);
+}
+
+static inline void qmc_setbits16(void *__iomem addr, u16 set)
+{
+ qmc_write16(addr, qmc_read16(addr) | set);
+}
+
+static inline void qmc_clrbits16(void *__iomem addr, u16 clr)
+{
+ qmc_write16(addr, qmc_read16(addr) & ~clr);
+}
+
+static inline void qmc_write32(void *__iomem addr, u32 val)
+{
+ iowrite32be(val, addr);
+}
+
+static inline u32 qmc_read32(void *__iomem addr)
+{
+ return ioread32be(addr);
+}
+
+static inline void qmc_setbits32(void *__iomem addr, u32 set)
+{
+ qmc_write32(addr, qmc_read32(addr) | set);
+}
+
+
+int qmc_chan_get_info(struct qmc_chan *chan, struct qmc_chan_info *info)
+{
+ struct tsa_serial_info tsa_info;
+ int ret;
+
+ /* Retrieve info from the TSA related serial */
+ ret = tsa_serial_get_info(chan->qmc->tsa_serial, &tsa_info);
+ if (ret)
+ return ret;
+
+ info->mode = chan->mode;
+ info->rx_fs_rate = tsa_info.rx_fs_rate;
+ info->rx_bit_rate = tsa_info.rx_bit_rate;
+ info->nb_tx_ts = hweight64(chan->tx_ts_mask);
+ info->tx_fs_rate = tsa_info.tx_fs_rate;
+ info->tx_bit_rate = tsa_info.tx_bit_rate;
+ info->nb_rx_ts = hweight64(chan->rx_ts_mask);
+
+ return 0;
+}
+EXPORT_SYMBOL(qmc_chan_get_info);
+
+int qmc_chan_set_param(struct qmc_chan *chan, const struct qmc_chan_param *param)
+{
+ if (param->mode != chan->mode)
+ return -EINVAL;
+
+ switch (param->mode) {
+ case QMC_HDLC:
+ if ((param->hdlc.max_rx_buf_size % 4) ||
+ (param->hdlc.max_rx_buf_size < 8))
+ return -EINVAL;
+
+ qmc_write16(chan->qmc->scc_pram + QMC_GBL_MRBLR,
+ param->hdlc.max_rx_buf_size - 8);
+ qmc_write16(chan->s_param + QMC_SPE_MFLR,
+ param->hdlc.max_rx_frame_size);
+ if (param->hdlc.is_crc32) {
+ qmc_setbits16(chan->s_param + QMC_SPE_CHAMR,
+ QMC_SPE_CHAMR_HDLC_CRC);
+ } else {
+ qmc_clrbits16(chan->s_param + QMC_SPE_CHAMR,
+ QMC_SPE_CHAMR_HDLC_CRC);
+ }
+ break;
+
+ case QMC_TRANSPARENT:
+ qmc_write16(chan->s_param + QMC_SPE_TMRBLR,
+ param->transp.max_rx_buf_size);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(qmc_chan_set_param);
+
+int qmc_chan_write_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length,
+ void (*complete)(void *context), void *context)
+{
+ struct qmc_xfer_desc *xfer_desc;
+ unsigned long flags;
+ cbd_t *__iomem bd;
+ u16 ctrl;
+ int ret;
+
+ /*
+ * R bit UB bit
+ * 0 0 : The BD is free
+ * 1 1 : The BD is in used, waiting for transfer
+ * 0 1 : The BD is in used, waiting for completion
+ * 1 0 : Should not append
+ */
+
+ spin_lock_irqsave(&chan->tx_lock, flags);
+ bd = chan->txbd_free;
+
+ ctrl = qmc_read16(&bd->cbd_sc);
+ if (ctrl & (QMC_BD_TX_R | QMC_BD_TX_UB)) {
+ /* We are full ... */
+ ret = -EBUSY;
+ goto end;
+ }
+
+ qmc_write16(&bd->cbd_datlen, length);
+ qmc_write32(&bd->cbd_bufaddr, addr);
+
+ xfer_desc = &chan->tx_desc[bd - chan->txbds];
+ xfer_desc->tx_complete = complete;
+ xfer_desc->context = context;
+
+ /* Activate the descriptor */
+ ctrl |= (QMC_BD_TX_R | QMC_BD_TX_UB);
+ wmb(); /* Be sure to flush the descriptor before control update */
+ qmc_write16(&bd->cbd_sc, ctrl);
+
+ if (!chan->is_tx_stopped)
+ qmc_setbits16(chan->s_param + QMC_SPE_CHAMR, QMC_SPE_CHAMR_POL);
+
+ if (ctrl & QMC_BD_TX_W)
+ chan->txbd_free = chan->txbds;
+ else
+ chan->txbd_free++;
+
+ ret = 0;
+
+end:
+ spin_unlock_irqrestore(&chan->tx_lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL(qmc_chan_write_submit);
+
+static void qmc_chan_write_done(struct qmc_chan *chan)
+{
+ struct qmc_xfer_desc *xfer_desc;
+ void (*complete)(void *context);
+ unsigned long flags;
+ void *context;
+ cbd_t *__iomem bd;
+ u16 ctrl;
+
+ /*
+ * R bit UB bit
+ * 0 0 : The BD is free
+ * 1 1 : The BD is in used, waiting for transfer
+ * 0 1 : The BD is in used, waiting for completion
+ * 1 0 : Should not append
+ */
+
+ spin_lock_irqsave(&chan->tx_lock, flags);
+ bd = chan->txbd_done;
+
+ ctrl = qmc_read16(&bd->cbd_sc);
+ while (!(ctrl & QMC_BD_TX_R)) {
+ if (!(ctrl & QMC_BD_TX_UB))
+ goto end;
+
+ xfer_desc = &chan->tx_desc[bd - chan->txbds];
+ complete = xfer_desc->tx_complete;
+ context = xfer_desc->context;
+ xfer_desc->tx_complete = NULL;
+ xfer_desc->context = NULL;
+
+ qmc_write16(&bd->cbd_sc, ctrl & ~QMC_BD_TX_UB);
+
+ if (ctrl & QMC_BD_TX_W)
+ chan->txbd_done = chan->txbds;
+ else
+ chan->txbd_done++;
+
+ if (complete) {
+ spin_unlock_irqrestore(&chan->tx_lock, flags);
+ complete(context);
+ spin_lock_irqsave(&chan->tx_lock, flags);
+ }
+
+ bd = chan->txbd_done;
+ ctrl = qmc_read16(&bd->cbd_sc);
+ }
+
+end:
+ spin_unlock_irqrestore(&chan->tx_lock, flags);
+}
+
+int qmc_chan_read_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length,
+ void (*complete)(void *context, size_t length), void *context)
+{
+ struct qmc_xfer_desc *xfer_desc;
+ unsigned long flags;
+ cbd_t *__iomem bd;
+ u16 ctrl;
+ int ret;
+
+ /*
+ * E bit UB bit
+ * 0 0 : The BD is free
+ * 1 1 : The BD is in used, waiting for transfer
+ * 0 1 : The BD is in used, waiting for completion
+ * 1 0 : Should not append
+ */
+
+ spin_lock_irqsave(&chan->rx_lock, flags);
+ bd = chan->rxbd_free;
+
+ ctrl = qmc_read16(&bd->cbd_sc);
+ if (ctrl & (QMC_BD_RX_E | QMC_BD_RX_UB)) {
+ /* We are full ... */
+ ret = -EBUSY;
+ goto end;
+ }
+
+ qmc_write16(&bd->cbd_datlen, 0); /* data length is updated by the QMC */
+ qmc_write32(&bd->cbd_bufaddr, addr);
+
+ xfer_desc = &chan->rx_desc[bd - chan->rxbds];
+ xfer_desc->rx_complete = complete;
+ xfer_desc->context = context;
+
+ /* Activate the descriptor */
+ ctrl |= (QMC_BD_RX_E | QMC_BD_RX_UB);
+ wmb(); /* Be sure to flush data before descriptor activation */
+ qmc_write16(&bd->cbd_sc, ctrl);
+
+ /* Restart receiver if needed */
+ if (chan->is_rx_halted && !chan->is_rx_stopped) {
+ /* Restart receiver */
+ if (chan->mode == QMC_TRANSPARENT)
+ qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x18000080);
+ else
+ qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x00000080);
+ qmc_write32(chan->s_param + QMC_SPE_RSTATE, 0x31000000);
+ chan->is_rx_halted = false;
+ }
+ chan->rx_pending++;
+
+ if (ctrl & QMC_BD_RX_W)
+ chan->rxbd_free = chan->rxbds;
+ else
+ chan->rxbd_free++;
+
+ ret = 0;
+end:
+ spin_unlock_irqrestore(&chan->rx_lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL(qmc_chan_read_submit);
+
+static void qmc_chan_read_done(struct qmc_chan *chan)
+{
+ void (*complete)(void *context, size_t size);
+ struct qmc_xfer_desc *xfer_desc;
+ unsigned long flags;
+ cbd_t *__iomem bd;
+ void *context;
+ u16 datalen;
+ u16 ctrl;
+
+ /*
+ * E bit UB bit
+ * 0 0 : The BD is free
+ * 1 1 : The BD is in used, waiting for transfer
+ * 0 1 : The BD is in used, waiting for completion
+ * 1 0 : Should not append
+ */
+
+ spin_lock_irqsave(&chan->rx_lock, flags);
+ bd = chan->rxbd_done;
+
+ ctrl = qmc_read16(&bd->cbd_sc);
+ while (!(ctrl & QMC_BD_RX_E)) {
+ if (!(ctrl & QMC_BD_RX_UB))
+ goto end;
+
+ xfer_desc = &chan->rx_desc[bd - chan->rxbds];
+ complete = xfer_desc->rx_complete;
+ context = xfer_desc->context;
+ xfer_desc->rx_complete = NULL;
+ xfer_desc->context = NULL;
+
+ datalen = qmc_read16(&bd->cbd_datlen);
+ qmc_write16(&bd->cbd_sc, ctrl & ~QMC_BD_RX_UB);
+
+ if (ctrl & QMC_BD_RX_W)
+ chan->rxbd_done = chan->rxbds;
+ else
+ chan->rxbd_done++;
+
+ chan->rx_pending--;
+
+ if (complete) {
+ spin_unlock_irqrestore(&chan->rx_lock, flags);
+ complete(context, datalen);
+ spin_lock_irqsave(&chan->rx_lock, flags);
+ }
+
+ bd = chan->rxbd_done;
+ ctrl = qmc_read16(&bd->cbd_sc);
+ }
+
+end:
+ spin_unlock_irqrestore(&chan->rx_lock, flags);
+}
+
+static int qmc_chan_command(struct qmc_chan *chan, u8 qmc_opcode)
+{
+ return cpm_command(chan->id << 2, (qmc_opcode << 4) | 0x0E);
+}
+
+static int qmc_chan_stop_rx(struct qmc_chan *chan)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&chan->rx_lock, flags);
+
+ /* Send STOP RECEIVE command */
+ ret = qmc_chan_command(chan, 0x0);
+ if (ret) {
+ dev_err(chan->qmc->dev, "chan %u: Send STOP RECEIVE failed (%d)\n",
+ chan->id, ret);
+ goto end;
+ }
+
+ chan->is_rx_stopped = true;
+
+end:
+ spin_unlock_irqrestore(&chan->rx_lock, flags);
+ return ret;
+}
+
+static int qmc_chan_stop_tx(struct qmc_chan *chan)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&chan->tx_lock, flags);
+
+ /* Send STOP TRANSMIT command */
+ ret = qmc_chan_command(chan, 0x1);
+ if (ret) {
+ dev_err(chan->qmc->dev, "chan %u: Send STOP TRANSMIT failed (%d)\n",
+ chan->id, ret);
+ goto end;
+ }
+
+ chan->is_tx_stopped = true;
+
+end:
+ spin_unlock_irqrestore(&chan->tx_lock, flags);
+ return ret;
+}
+
+int qmc_chan_stop(struct qmc_chan *chan, int direction)
+{
+ int ret;
+
+ if (direction & QMC_CHAN_READ) {
+ ret = qmc_chan_stop_rx(chan);
+ if (ret)
+ return ret;
+ }
+
+ if (direction & QMC_CHAN_WRITE) {
+ ret = qmc_chan_stop_tx(chan);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(qmc_chan_stop);
+
+static void qmc_chan_start_rx(struct qmc_chan *chan)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&chan->rx_lock, flags);
+
+ /* Restart the receiver */
+ if (chan->mode == QMC_TRANSPARENT)
+ qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x18000080);
+ else
+ qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x00000080);
+ qmc_write32(chan->s_param + QMC_SPE_RSTATE, 0x31000000);
+ chan->is_rx_halted = false;
+
+ chan->is_rx_stopped = false;
+
+ spin_unlock_irqrestore(&chan->rx_lock, flags);
+}
+
+static void qmc_chan_start_tx(struct qmc_chan *chan)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&chan->tx_lock, flags);
+
+ /*
+ * Enable channel transmitter as it could be disabled if
+ * qmc_chan_reset() was called.
+ */
+ qmc_setbits16(chan->s_param + QMC_SPE_CHAMR, QMC_SPE_CHAMR_ENT);
+
+ /* Set the POL bit in the channel mode register */
+ qmc_setbits16(chan->s_param + QMC_SPE_CHAMR, QMC_SPE_CHAMR_POL);
+
+ chan->is_tx_stopped = false;
+
+ spin_unlock_irqrestore(&chan->tx_lock, flags);
+}
+
+int qmc_chan_start(struct qmc_chan *chan, int direction)
+{
+ if (direction & QMC_CHAN_READ)
+ qmc_chan_start_rx(chan);
+
+ if (direction & QMC_CHAN_WRITE)
+ qmc_chan_start_tx(chan);
+
+ return 0;
+}
+EXPORT_SYMBOL(qmc_chan_start);
+
+static void qmc_chan_reset_rx(struct qmc_chan *chan)
+{
+ struct qmc_xfer_desc *xfer_desc;
+ unsigned long flags;
+ cbd_t *__iomem bd;
+ u16 ctrl;
+
+ spin_lock_irqsave(&chan->rx_lock, flags);
+ bd = chan->rxbds;
+ do {
+ ctrl = qmc_read16(&bd->cbd_sc);
+ qmc_write16(&bd->cbd_sc, ctrl & ~(QMC_BD_RX_UB | QMC_BD_RX_E));
+
+ xfer_desc = &chan->rx_desc[bd - chan->rxbds];
+ xfer_desc->rx_complete = NULL;
+ xfer_desc->context = NULL;
+
+ bd++;
+ } while (!(ctrl & QMC_BD_RX_W));
+
+ chan->rxbd_free = chan->rxbds;
+ chan->rxbd_done = chan->rxbds;
+ qmc_write16(chan->s_param + QMC_SPE_RBPTR,
+ qmc_read16(chan->s_param + QMC_SPE_RBASE));
+
+ chan->rx_pending = 0;
+ chan->is_rx_stopped = false;
+
+ spin_unlock_irqrestore(&chan->rx_lock, flags);
+}
+
+static void qmc_chan_reset_tx(struct qmc_chan *chan)
+{
+ struct qmc_xfer_desc *xfer_desc;
+ unsigned long flags;
+ cbd_t *__iomem bd;
+ u16 ctrl;
+
+ spin_lock_irqsave(&chan->tx_lock, flags);
+
+ /* Disable transmitter. It will be re-enable on qmc_chan_start() */
+ qmc_clrbits16(chan->s_param + QMC_SPE_CHAMR, QMC_SPE_CHAMR_ENT);
+
+ bd = chan->txbds;
+ do {
+ ctrl = qmc_read16(&bd->cbd_sc);
+ qmc_write16(&bd->cbd_sc, ctrl & ~(QMC_BD_TX_UB | QMC_BD_TX_R));
+
+ xfer_desc = &chan->tx_desc[bd - chan->txbds];
+ xfer_desc->tx_complete = NULL;
+ xfer_desc->context = NULL;
+
+ bd++;
+ } while (!(ctrl & QMC_BD_TX_W));
+
+ chan->txbd_free = chan->txbds;
+ chan->txbd_done = chan->txbds;
+ qmc_write16(chan->s_param + QMC_SPE_TBPTR,
+ qmc_read16(chan->s_param + QMC_SPE_TBASE));
+
+ /* Reset TSTATE and ZISTATE to their initial value */
+ qmc_write32(chan->s_param + QMC_SPE_TSTATE, 0x30000000);
+ qmc_write32(chan->s_param + QMC_SPE_ZISTATE, 0x00000100);
+
+ spin_unlock_irqrestore(&chan->tx_lock, flags);
+}
+
+int qmc_chan_reset(struct qmc_chan *chan, int direction)
+{
+ if (direction & QMC_CHAN_READ)
+ qmc_chan_reset_rx(chan);
+
+ if (direction & QMC_CHAN_WRITE)
+ qmc_chan_reset_tx(chan);
+
+ return 0;
+}
+EXPORT_SYMBOL(qmc_chan_reset);
+
+static int qmc_check_chans(struct qmc *qmc)
+{
+ struct tsa_serial_info info;
+ bool is_one_table = false;
+ struct qmc_chan *chan;
+ u64 tx_ts_mask = 0;
+ u64 rx_ts_mask = 0;
+ u64 tx_ts_assigned_mask;
+ u64 rx_ts_assigned_mask;
+ int ret;
+
+ /* Retrieve info from the TSA related serial */
+ ret = tsa_serial_get_info(qmc->tsa_serial, &info);
+ if (ret)
+ return ret;
+
+ /*
+ * If more than 32 TS are assigned to this serial, one common table is
+ * used for Tx and Rx and so masks must be equal for all channels.
+ */
+ if ((info.nb_tx_ts > 32) || (info.nb_rx_ts > 32)) {
+ if (info.nb_tx_ts != info.nb_rx_ts) {
+ dev_err(qmc->dev, "Number of TSA Tx/Rx TS assigned are not equal\n");
+ return -EINVAL;
+ }
+ is_one_table = true;
+ }
+
+
+ tx_ts_assigned_mask = (((u64)1) << info.nb_tx_ts) - 1;
+ rx_ts_assigned_mask = (((u64)1) << info.nb_rx_ts) - 1;
+
+ list_for_each_entry(chan, &qmc->chan_head, list) {
+ if (chan->tx_ts_mask > tx_ts_assigned_mask) {
+ dev_err(qmc->dev, "chan %u uses TSA unassigned Tx TS\n", chan->id);
+ return -EINVAL;
+ }
+ if (tx_ts_mask & chan->tx_ts_mask) {
+ dev_err(qmc->dev, "chan %u uses an already used Tx TS\n", chan->id);
+ return -EINVAL;
+ }
+
+ if (chan->rx_ts_mask > rx_ts_assigned_mask) {
+ dev_err(qmc->dev, "chan %u uses TSA unassigned Rx TS\n", chan->id);
+ return -EINVAL;
+ }
+ if (rx_ts_mask & chan->rx_ts_mask) {
+ dev_err(qmc->dev, "chan %u uses an already used Rx TS\n", chan->id);
+ return -EINVAL;
+ }
+
+ if (is_one_table && (chan->tx_ts_mask != chan->rx_ts_mask)) {
+ dev_err(qmc->dev, "chan %u uses different Rx and Tx TS\n", chan->id);
+ return -EINVAL;
+ }
+
+ tx_ts_mask |= chan->tx_ts_mask;
+ rx_ts_mask |= chan->rx_ts_mask;
+ }
+
+ return 0;
+}
+
+static unsigned int qmc_nb_chans(struct qmc *qmc)
+{
+ unsigned int count = 0;
+ struct qmc_chan *chan;
+
+ list_for_each_entry(chan, &qmc->chan_head, list)
+ count++;
+
+ return count;
+}
+
+static int qmc_of_parse_chans(struct qmc *qmc, struct device_node *np)
+{
+ struct device_node *chan_np;
+ struct qmc_chan *chan;
+ const char *mode;
+ u32 chan_id;
+ u64 ts_mask;
+ int ret;
+
+ for_each_available_child_of_node(np, chan_np) {
+ ret = of_property_read_u32(chan_np, "reg", &chan_id);
+ if (ret) {
+ dev_err(qmc->dev, "%pOF: failed to read reg\n", chan_np);
+ of_node_put(chan_np);
+ return ret;
+ }
+ if (chan_id > 63) {
+ dev_err(qmc->dev, "%pOF: Invalid chan_id\n", chan_np);
+ of_node_put(chan_np);
+ return -EINVAL;
+ }
+
+ chan = devm_kzalloc(qmc->dev, sizeof(*chan), GFP_KERNEL);
+ if (!chan) {
+ of_node_put(chan_np);
+ return -ENOMEM;
+ }
+
+ chan->id = chan_id;
+ spin_lock_init(&chan->rx_lock);
+ spin_lock_init(&chan->tx_lock);
+
+ ret = of_property_read_u64(chan_np, "fsl,tx-ts-mask", &ts_mask);
+ if (ret) {
+ dev_err(qmc->dev, "%pOF: failed to read fsl,tx-ts-mask\n",
+ chan_np);
+ of_node_put(chan_np);
+ return ret;
+ }
+ chan->tx_ts_mask = ts_mask;
+
+ ret = of_property_read_u64(chan_np, "fsl,rx-ts-mask", &ts_mask);
+ if (ret) {
+ dev_err(qmc->dev, "%pOF: failed to read fsl,rx-ts-mask\n",
+ chan_np);
+ of_node_put(chan_np);
+ return ret;
+ }
+ chan->rx_ts_mask = ts_mask;
+
+ mode = "transparent";
+ ret = of_property_read_string(chan_np, "fsl,operational-mode", &mode);
+ if (ret && ret != -EINVAL) {
+ dev_err(qmc->dev, "%pOF: failed to read fsl,operational-mode\n",
+ chan_np);
+ of_node_put(chan_np);
+ return ret;
+ }
+ if (!strcmp(mode, "transparent")) {
+ chan->mode = QMC_TRANSPARENT;
+ } else if (!strcmp(mode, "hdlc")) {
+ chan->mode = QMC_HDLC;
+ } else {
+ dev_err(qmc->dev, "%pOF: Invalid fsl,operational-mode (%s)\n",
+ chan_np, mode);
+ of_node_put(chan_np);
+ return -EINVAL;
+ }
+
+ chan->is_reverse_data = of_property_read_bool(chan_np,
+ "fsl,reverse-data");
+
+ list_add_tail(&chan->list, &qmc->chan_head);
+ qmc->chans[chan->id] = chan;
+ }
+
+ return qmc_check_chans(qmc);
+}
+
+static int qmc_setup_tsa_64rxtx(struct qmc *qmc, const struct tsa_serial_info *info)
+{
+ struct qmc_chan *chan;
+ unsigned int i;
+ u16 val;
+
+ /*
+ * Use a common Tx/Rx 64 entries table.
+ * Everything was previously checked, Tx and Rx related stuffs are
+ * identical -> Used Rx related stuff to build the table
+ */
+
+ /* Invalidate all entries */
+ for (i = 0; i < 64; i++)
+ qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), 0x0000);
+
+ /* Set entries based on Rx stuff*/
+ list_for_each_entry(chan, &qmc->chan_head, list) {
+ for (i = 0; i < info->nb_rx_ts; i++) {
+ if (!(chan->rx_ts_mask & (((u64)1) << i)))
+ continue;
+
+ val = QMC_TSA_VALID | QMC_TSA_MASK |
+ QMC_TSA_CHANNEL(chan->id);
+ qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), val);
+ }
+ }
+
+ /* Set Wrap bit on last entry */
+ qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATRX + ((info->nb_rx_ts - 1) * 2),
+ QMC_TSA_WRAP);
+
+ /* Init pointers to the table */
+ val = qmc->scc_pram_offset + QMC_GBL_TSATRX;
+ qmc_write16(qmc->scc_pram + QMC_GBL_RX_S_PTR, val);
+ qmc_write16(qmc->scc_pram + QMC_GBL_RXPTR, val);
+ qmc_write16(qmc->scc_pram + QMC_GBL_TX_S_PTR, val);
+ qmc_write16(qmc->scc_pram + QMC_GBL_TXPTR, val);
+
+ return 0;
+}
+
+static int qmc_setup_tsa_32rx_32tx(struct qmc *qmc, const struct tsa_serial_info *info)
+{
+ struct qmc_chan *chan;
+ unsigned int i;
+ u16 val;
+
+ /*
+ * Use a Tx 32 entries table and a Rx 32 entries table.
+ * Everything was previously checked.
+ */
+
+ /* Invalidate all entries */
+ for (i = 0; i < 32; i++) {
+ qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), 0x0000);
+ qmc_write16(qmc->scc_pram + QMC_GBL_TSATTX + (i * 2), 0x0000);
+ }
+
+ /* Set entries based on Rx and Tx stuff*/
+ list_for_each_entry(chan, &qmc->chan_head, list) {
+ /* Rx part */
+ for (i = 0; i < info->nb_rx_ts; i++) {
+ if (!(chan->rx_ts_mask & (((u64)1) << i)))
+ continue;
+
+ val = QMC_TSA_VALID | QMC_TSA_MASK |
+ QMC_TSA_CHANNEL(chan->id);
+ qmc_write16(qmc->scc_pram + QMC_GBL_TSATRX + (i * 2), val);
+ }
+ /* Tx part */
+ for (i = 0; i < info->nb_tx_ts; i++) {
+ if (!(chan->tx_ts_mask & (((u64)1) << i)))
+ continue;
+
+ val = QMC_TSA_VALID | QMC_TSA_MASK |
+ QMC_TSA_CHANNEL(chan->id);
+ qmc_write16(qmc->scc_pram + QMC_GBL_TSATTX + (i * 2), val);
+ }
+ }
+
+ /* Set Wrap bit on last entries */
+ qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATRX + ((info->nb_rx_ts - 1) * 2),
+ QMC_TSA_WRAP);
+ qmc_setbits16(qmc->scc_pram + QMC_GBL_TSATTX + ((info->nb_tx_ts - 1) * 2),
+ QMC_TSA_WRAP);
+
+ /* Init Rx pointers ...*/
+ val = qmc->scc_pram_offset + QMC_GBL_TSATRX;
+ qmc_write16(qmc->scc_pram + QMC_GBL_RX_S_PTR, val);
+ qmc_write16(qmc->scc_pram + QMC_GBL_RXPTR, val);
+
+ /* ... and Tx pointers */
+ val = qmc->scc_pram_offset + QMC_GBL_TSATTX;
+ qmc_write16(qmc->scc_pram + QMC_GBL_TX_S_PTR, val);
+ qmc_write16(qmc->scc_pram + QMC_GBL_TXPTR, val);
+
+ return 0;
+}
+
+static int qmc_setup_tsa(struct qmc *qmc)
+{
+ struct tsa_serial_info info;
+ int ret;
+
+ /* Retrieve info from the TSA related serial */
+ ret = tsa_serial_get_info(qmc->tsa_serial, &info);
+ if (ret)
+ return ret;
+
+ /*
+ * Setup one common 64 entries table or two 32 entries (one for Tx and
+ * one for Tx) according to assigned TS numbers.
+ */
+ return ((info.nb_tx_ts > 32) || (info.nb_rx_ts > 32)) ?
+ qmc_setup_tsa_64rxtx(qmc, &info) :
+ qmc_setup_tsa_32rx_32tx(qmc, &info);
+}
+
+static int qmc_setup_chan_trnsync(struct qmc *qmc, struct qmc_chan *chan)
+{
+ struct tsa_serial_info info;
+ u16 first_rx, last_tx;
+ u16 trnsync;
+ int ret;
+
+ /* Retrieve info from the TSA related serial */
+ ret = tsa_serial_get_info(chan->qmc->tsa_serial, &info);
+ if (ret)
+ return ret;
+
+ /* Find the first Rx TS allocated to the channel */
+ first_rx = chan->rx_ts_mask ? __ffs64(chan->rx_ts_mask) + 1 : 0;
+
+ /* Find the last Tx TS allocated to the channel */
+ last_tx = fls64(chan->tx_ts_mask);
+
+ trnsync = 0;
+ if (info.nb_rx_ts)
+ trnsync |= QMC_SPE_TRNSYNC_RX((first_rx % info.nb_rx_ts) * 2);
+ if (info.nb_tx_ts)
+ trnsync |= QMC_SPE_TRNSYNC_TX((last_tx % info.nb_tx_ts) * 2);
+
+ qmc_write16(chan->s_param + QMC_SPE_TRNSYNC, trnsync);
+
+ dev_dbg(qmc->dev, "chan %u: trnsync=0x%04x, rx %u/%u 0x%llx, tx %u/%u 0x%llx\n",
+ chan->id, trnsync,
+ first_rx, info.nb_rx_ts, chan->rx_ts_mask,
+ last_tx, info.nb_tx_ts, chan->tx_ts_mask);
+
+ return 0;
+}
+
+static int qmc_setup_chan(struct qmc *qmc, struct qmc_chan *chan)
+{
+ unsigned int i;
+ cbd_t __iomem *bd;
+ int ret;
+ u16 val;
+
+ chan->qmc = qmc;
+
+ /* Set channel specific parameter base address */
+ chan->s_param = qmc->dpram + (chan->id * 64);
+ /* 16 bd per channel (8 rx and 8 tx) */
+ chan->txbds = qmc->bd_table + (chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS));
+ chan->rxbds = qmc->bd_table + (chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS)) + QMC_NB_TXBDS;
+
+ chan->txbd_free = chan->txbds;
+ chan->txbd_done = chan->txbds;
+ chan->rxbd_free = chan->rxbds;
+ chan->rxbd_done = chan->rxbds;
+
+ /* TBASE and TBPTR*/
+ val = chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS) * sizeof(cbd_t);
+ qmc_write16(chan->s_param + QMC_SPE_TBASE, val);
+ qmc_write16(chan->s_param + QMC_SPE_TBPTR, val);
+
+ /* RBASE and RBPTR*/
+ val = ((chan->id * (QMC_NB_TXBDS + QMC_NB_RXBDS)) + QMC_NB_TXBDS) * sizeof(cbd_t);
+ qmc_write16(chan->s_param + QMC_SPE_RBASE, val);
+ qmc_write16(chan->s_param + QMC_SPE_RBPTR, val);
+ qmc_write32(chan->s_param + QMC_SPE_TSTATE, 0x30000000);
+ qmc_write32(chan->s_param + QMC_SPE_RSTATE, 0x31000000);
+ qmc_write32(chan->s_param + QMC_SPE_ZISTATE, 0x00000100);
+ if (chan->mode == QMC_TRANSPARENT) {
+ qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x18000080);
+ qmc_write16(chan->s_param + QMC_SPE_TMRBLR, 60);
+ val = QMC_SPE_CHAMR_MODE_TRANSP | QMC_SPE_CHAMR_TRANSP_SYNC;
+ if (chan->is_reverse_data)
+ val |= QMC_SPE_CHAMR_TRANSP_RD;
+ qmc_write16(chan->s_param + QMC_SPE_CHAMR, val);
+ ret = qmc_setup_chan_trnsync(qmc, chan);
+ if (ret)
+ return ret;
+ } else {
+ qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x00000080);
+ qmc_write16(chan->s_param + QMC_SPE_MFLR, 60);
+ qmc_write16(chan->s_param + QMC_SPE_CHAMR,
+ QMC_SPE_CHAMR_MODE_HDLC | QMC_SPE_CHAMR_HDLC_IDLM);
+ }
+
+ /* Do not enable interrupts now. They will be enabled later */
+ qmc_write16(chan->s_param + QMC_SPE_INTMSK, 0x0000);
+
+ /* Init Rx BDs and set Wrap bit on last descriptor */
+ BUILD_BUG_ON(QMC_NB_RXBDS == 0);
+ val = QMC_BD_RX_I;
+ for (i = 0; i < QMC_NB_RXBDS; i++) {
+ bd = chan->rxbds + i;
+ qmc_write16(&bd->cbd_sc, val);
+ }
+ bd = chan->rxbds + QMC_NB_RXBDS - 1;
+ qmc_write16(&bd->cbd_sc, val | QMC_BD_RX_W);
+
+ /* Init Tx BDs and set Wrap bit on last descriptor */
+ BUILD_BUG_ON(QMC_NB_TXBDS == 0);
+ val = QMC_BD_TX_I;
+ if (chan->mode == QMC_HDLC)
+ val |= QMC_BD_TX_L | QMC_BD_TX_TC;
+ for (i = 0; i < QMC_NB_TXBDS; i++) {
+ bd = chan->txbds + i;
+ qmc_write16(&bd->cbd_sc, val);
+ }
+ bd = chan->txbds + QMC_NB_TXBDS - 1;
+ qmc_write16(&bd->cbd_sc, val | QMC_BD_TX_W);
+
+ return 0;
+}
+
+static int qmc_setup_chans(struct qmc *qmc)
+{
+ struct qmc_chan *chan;
+ int ret;
+
+ list_for_each_entry(chan, &qmc->chan_head, list) {
+ ret = qmc_setup_chan(qmc, chan);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int qmc_finalize_chans(struct qmc *qmc)
+{
+ struct qmc_chan *chan;
+ int ret;
+
+ list_for_each_entry(chan, &qmc->chan_head, list) {
+ /* Unmask channel interrupts */
+ if (chan->mode == QMC_HDLC) {
+ qmc_write16(chan->s_param + QMC_SPE_INTMSK,
+ QMC_INT_NID | QMC_INT_IDL | QMC_INT_MRF |
+ QMC_INT_UN | QMC_INT_RXF | QMC_INT_BSY |
+ QMC_INT_TXB | QMC_INT_RXB);
+ } else {
+ qmc_write16(chan->s_param + QMC_SPE_INTMSK,
+ QMC_INT_UN | QMC_INT_BSY |
+ QMC_INT_TXB | QMC_INT_RXB);
+ }
+
+ /* Forced stop the channel */
+ ret = qmc_chan_stop(chan, QMC_CHAN_ALL);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int qmc_setup_ints(struct qmc *qmc)
+{
+ unsigned int i;
+ u16 __iomem *last;
+
+ /* Raz all entries */
+ for (i = 0; i < (qmc->int_size / sizeof(u16)); i++)
+ qmc_write16(qmc->int_table + i, 0x0000);
+
+ /* Set Wrap bit on last entry */
+ if (qmc->int_size >= sizeof(u16)) {
+ last = qmc->int_table + (qmc->int_size / sizeof(u16)) - 1;
+ qmc_write16(last, QMC_INT_W);
+ }
+
+ return 0;
+}
+
+static void qmc_irq_gint(struct qmc *qmc)
+{
+ struct qmc_chan *chan;
+ unsigned int chan_id;
+ unsigned long flags;
+ u16 int_entry;
+
+ int_entry = qmc_read16(qmc->int_curr);
+ while (int_entry & QMC_INT_V) {
+ /* Clear all but the Wrap bit */
+ qmc_write16(qmc->int_curr, int_entry & QMC_INT_W);
+
+ chan_id = QMC_INT_GET_CHANNEL(int_entry);
+ chan = qmc->chans[chan_id];
+ if (!chan) {
+ dev_err(qmc->dev, "interrupt on invalid chan %u\n", chan_id);
+ goto int_next;
+ }
+
+ if (int_entry & QMC_INT_TXB)
+ qmc_chan_write_done(chan);
+
+ if (int_entry & QMC_INT_UN) {
+ dev_info(qmc->dev, "intr chan %u, 0x%04x (UN)\n", chan_id,
+ int_entry);
+ chan->nb_tx_underrun++;
+ }
+
+ if (int_entry & QMC_INT_BSY) {
+ dev_info(qmc->dev, "intr chan %u, 0x%04x (BSY)\n", chan_id,
+ int_entry);
+ chan->nb_rx_busy++;
+ /* Restart the receiver if needed */
+ spin_lock_irqsave(&chan->rx_lock, flags);
+ if (chan->rx_pending && !chan->is_rx_stopped) {
+ if (chan->mode == QMC_TRANSPARENT)
+ qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x18000080);
+ else
+ qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, 0x00000080);
+ qmc_write32(chan->s_param + QMC_SPE_RSTATE, 0x31000000);
+ chan->is_rx_halted = false;
+ } else {
+ chan->is_rx_halted = true;
+ }
+ spin_unlock_irqrestore(&chan->rx_lock, flags);
+ }
+
+ if (int_entry & QMC_INT_RXB)
+ qmc_chan_read_done(chan);
+
+int_next:
+ if (int_entry & QMC_INT_W)
+ qmc->int_curr = qmc->int_table;
+ else
+ qmc->int_curr++;
+ int_entry = qmc_read16(qmc->int_curr);
+ }
+}
+
+static irqreturn_t qmc_irq_handler(int irq, void *priv)
+{
+ struct qmc *qmc = (struct qmc *)priv;
+ u16 scce;
+
+ scce = qmc_read16(qmc->scc_regs + SCC_SCCE);
+ qmc_write16(qmc->scc_regs + SCC_SCCE, scce);
+
+ if (unlikely(scce & SCC_SCCE_IQOV))
+ dev_info(qmc->dev, "IRQ queue overflow\n");
+
+ if (unlikely(scce & SCC_SCCE_GUN))
+ dev_err(qmc->dev, "Global transmitter underrun\n");
+
+ if (unlikely(scce & SCC_SCCE_GOV))
+ dev_err(qmc->dev, "Global receiver overrun\n");
+
+ /* normal interrupt */
+ if (likely(scce & SCC_SCCE_GINT))
+ qmc_irq_gint(qmc);
+
+ return IRQ_HANDLED;
+}
+
+static int qmc_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ unsigned int nb_chans;
+ struct resource *res;
+ struct qmc *qmc;
+ int irq;
+ int ret;
+
+ qmc = devm_kzalloc(&pdev->dev, sizeof(*qmc), GFP_KERNEL);
+ if (!qmc)
+ return -ENOMEM;
+
+ qmc->dev = &pdev->dev;
+ INIT_LIST_HEAD(&qmc->chan_head);
+
+ qmc->scc_regs = devm_platform_ioremap_resource_byname(pdev, "scc_regs");
+ if (IS_ERR(qmc->scc_regs))
+ return PTR_ERR(qmc->scc_regs);
+
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scc_pram");
+ if (!res)
+ return -EINVAL;
+ qmc->scc_pram_offset = res->start - get_immrbase();
+ qmc->scc_pram = devm_ioremap_resource(qmc->dev, res);
+ if (IS_ERR(qmc->scc_pram))
+ return PTR_ERR(qmc->scc_pram);
+
+ qmc->dpram = devm_platform_ioremap_resource_byname(pdev, "dpram");
+ if (IS_ERR(qmc->dpram))
+ return PTR_ERR(qmc->dpram);
+
+ qmc->tsa_serial = devm_tsa_serial_get_byphandle(qmc->dev, np, "fsl,tsa-serial");
+ if (IS_ERR(qmc->tsa_serial)) {
+ return dev_err_probe(qmc->dev, PTR_ERR(qmc->tsa_serial),
+ "Failed to get TSA serial\n");
+ }
+
+ /* Connect the serial (SCC) to TSA */
+ ret = tsa_serial_connect(qmc->tsa_serial);
+ if (ret) {
+ dev_err(qmc->dev, "Failed to connect TSA serial\n");
+ return ret;
+ }
+
+ /* Parse channels informationss */
+ ret = qmc_of_parse_chans(qmc, np);
+ if (ret)
+ goto err_tsa_serial_disconnect;
+
+ nb_chans = qmc_nb_chans(qmc);
+
+ /* Init GMSR_H and GMSR_L registers */
+ qmc_write32(qmc->scc_regs + SCC_GSMRH,
+ SCC_GSMRH_CDS | SCC_GSMRH_CTSS | SCC_GSMRH_CDP | SCC_GSMRH_CTSP);
+
+ /* enable QMC mode */
+ qmc_write32(qmc->scc_regs + SCC_GSMRL, SCC_GSMRL_MODE_QMC);
+
+ /*
+ * Allocate the buffer descriptor table
+ * 8 rx and 8 tx descriptors per channel
+ */
+ qmc->bd_size = (nb_chans * (QMC_NB_TXBDS + QMC_NB_RXBDS)) * sizeof(cbd_t);
+ qmc->bd_table = dmam_alloc_coherent(qmc->dev, qmc->bd_size,
+ &qmc->bd_dma_addr, GFP_KERNEL);
+ if (!qmc->bd_table) {
+ dev_err(qmc->dev, "Failed to allocate bd table\n");
+ ret = -ENOMEM;
+ goto err_tsa_serial_disconnect;
+ }
+ memset(qmc->bd_table, 0, qmc->bd_size);
+
+ qmc_write32(qmc->scc_pram + QMC_GBL_MCBASE, qmc->bd_dma_addr);
+
+ /* Allocate the interrupt table */
+ qmc->int_size = QMC_NB_INTS * sizeof(u16);
+ qmc->int_table = dmam_alloc_coherent(qmc->dev, qmc->int_size,
+ &qmc->int_dma_addr, GFP_KERNEL);
+ if (!qmc->int_table) {
+ dev_err(qmc->dev, "Failed to allocate interrupt table\n");
+ ret = -ENOMEM;
+ goto err_tsa_serial_disconnect;
+ }
+ memset(qmc->int_table, 0, qmc->int_size);
+
+ qmc->int_curr = qmc->int_table;
+ qmc_write32(qmc->scc_pram + QMC_GBL_INTBASE, qmc->int_dma_addr);
+ qmc_write32(qmc->scc_pram + QMC_GBL_INTPTR, qmc->int_dma_addr);
+
+ /* Set MRBLR (valid for HDLC only) max MRU + max CRC */
+ qmc_write16(qmc->scc_pram + QMC_GBL_MRBLR, HDLC_MAX_MRU + 4);
+
+ qmc_write16(qmc->scc_pram + QMC_GBL_GRFTHR, 1);
+ qmc_write16(qmc->scc_pram + QMC_GBL_GRFCNT, 1);
+
+ qmc_write32(qmc->scc_pram + QMC_GBL_C_MASK32, 0xDEBB20E3);
+ qmc_write16(qmc->scc_pram + QMC_GBL_C_MASK16, 0xF0B8);
+
+ ret = qmc_setup_tsa(qmc);
+ if (ret)
+ goto err_tsa_serial_disconnect;
+
+ qmc_write16(qmc->scc_pram + QMC_GBL_QMCSTATE, 0x8000);
+
+ ret = qmc_setup_chans(qmc);
+ if (ret)
+ goto err_tsa_serial_disconnect;
+
+ /* Init interrupts table */
+ ret = qmc_setup_ints(qmc);
+ if (ret)
+ goto err_tsa_serial_disconnect;
+
+ /* Disable and clear interrupts, set the irq handler */
+ qmc_write16(qmc->scc_regs + SCC_SCCM, 0x0000);
+ qmc_write16(qmc->scc_regs + SCC_SCCE, 0x000F);
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ goto err_tsa_serial_disconnect;
+ ret = devm_request_irq(qmc->dev, irq, qmc_irq_handler, 0, "qmc", qmc);
+ if (ret < 0)
+ goto err_tsa_serial_disconnect;
+
+ /* Enable interrupts */
+ qmc_write16(qmc->scc_regs + SCC_SCCM,
+ SCC_SCCE_IQOV | SCC_SCCE_GINT | SCC_SCCE_GUN | SCC_SCCE_GOV);
+
+ ret = qmc_finalize_chans(qmc);
+ if (ret < 0)
+ goto err_disable_intr;
+
+ /* Enable transmiter and receiver */
+ qmc_setbits32(qmc->scc_regs + SCC_GSMRL, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+ platform_set_drvdata(pdev, qmc);
+
+ return 0;
+
+err_disable_intr:
+ qmc_write16(qmc->scc_regs + SCC_SCCM, 0);
+
+err_tsa_serial_disconnect:
+ tsa_serial_disconnect(qmc->tsa_serial);
+ return ret;
+}
+
+static int qmc_remove(struct platform_device *pdev)
+{
+ struct qmc *qmc = platform_get_drvdata(pdev);
+
+ /* Disable transmiter and receiver */
+ qmc_setbits32(qmc->scc_regs + SCC_GSMRL, 0);
+
+ /* Disable interrupts */
+ qmc_write16(qmc->scc_regs + SCC_SCCM, 0);
+
+ /* Disconnect the serial from TSA */
+ tsa_serial_disconnect(qmc->tsa_serial);
+
+ return 0;
+}
+
+static const struct of_device_id qmc_id_table[] = {
+ { .compatible = "fsl,cpm1-scc-qmc" },
+ {} /* sentinel */
+};
+MODULE_DEVICE_TABLE(of, qmc_id_table);
+
+static struct platform_driver qmc_driver = {
+ .driver = {
+ .name = "fsl-qmc",
+ .of_match_table = of_match_ptr(qmc_id_table),
+ },
+ .probe = qmc_probe,
+ .remove = qmc_remove,
+};
+module_platform_driver(qmc_driver);
+
+struct qmc_chan *qmc_chan_get_byphandle(struct device_node *np, const char *phandle_name)
+{
+ struct of_phandle_args out_args;
+ struct platform_device *pdev;
+ struct qmc_chan *qmc_chan;
+ struct qmc *qmc;
+ int ret;
+
+ ret = of_parse_phandle_with_fixed_args(np, phandle_name, 1, 0,
+ &out_args);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ if (!of_match_node(qmc_driver.driver.of_match_table, out_args.np)) {
+ of_node_put(out_args.np);
+ return ERR_PTR(-EINVAL);
+ }
+
+ pdev = of_find_device_by_node(out_args.np);
+ of_node_put(out_args.np);
+ if (!pdev)
+ return ERR_PTR(-ENODEV);
+
+ qmc = platform_get_drvdata(pdev);
+ if (!qmc) {
+ platform_device_put(pdev);
+ return ERR_PTR(-EPROBE_DEFER);
+ }
+
+ if (out_args.args_count != 1) {
+ platform_device_put(pdev);
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (out_args.args[0] >= ARRAY_SIZE(qmc->chans)) {
+ platform_device_put(pdev);
+ return ERR_PTR(-EINVAL);
+ }
+
+ qmc_chan = qmc->chans[out_args.args[0]];
+ if (!qmc_chan) {
+ platform_device_put(pdev);
+ return ERR_PTR(-ENOENT);
+ }
+
+ return qmc_chan;
+}
+EXPORT_SYMBOL(qmc_chan_get_byphandle);
+
+void qmc_chan_put(struct qmc_chan *chan)
+{
+ put_device(chan->qmc->dev);
+}
+EXPORT_SYMBOL(qmc_chan_put);
+
+static void devm_qmc_chan_release(struct device *dev, void *res)
+{
+ struct qmc_chan **qmc_chan = res;
+
+ qmc_chan_put(*qmc_chan);
+}
+
+struct qmc_chan *devm_qmc_chan_get_byphandle(struct device *dev,
+ struct device_node *np,
+ const char *phandle_name)
+{
+ struct qmc_chan *qmc_chan;
+ struct qmc_chan **dr;
+
+ dr = devres_alloc(devm_qmc_chan_release, sizeof(*dr), GFP_KERNEL);
+ if (!dr)
+ return ERR_PTR(-ENOMEM);
+
+ qmc_chan = qmc_chan_get_byphandle(np, phandle_name);
+ if (!IS_ERR(qmc_chan)) {
+ *dr = qmc_chan;
+ devres_add(dev, dr);
+ } else {
+ devres_free(dr);
+ }
+
+ return qmc_chan;
+}
+EXPORT_SYMBOL(devm_qmc_chan_get_byphandle);
+
+MODULE_AUTHOR("Herve Codina <[email protected]>");
+MODULE_DESCRIPTION("CPM QMC driver");
+MODULE_LICENSE("GPL");
diff --git a/include/soc/fsl/qe/qmc.h b/include/soc/fsl/qe/qmc.h
new file mode 100644
index 000000000000..3c61a50d2ae2
--- /dev/null
+++ b/include/soc/fsl/qe/qmc.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QMC management
+ *
+ * Copyright 2022 CS GROUP France
+ *
+ * Author: Herve Codina <[email protected]>
+ */
+#ifndef __SOC_FSL_QMC_H__
+#define __SOC_FSL_QMC_H__
+
+#include <linux/types.h>
+
+struct device_node;
+struct device;
+struct qmc_chan;
+
+struct qmc_chan *qmc_chan_get_byphandle(struct device_node *np, const char *phandle_name);
+void qmc_chan_put(struct qmc_chan *chan);
+struct qmc_chan *devm_qmc_chan_get_byphandle(struct device *dev, struct device_node *np,
+ const char *phandle_name);
+
+enum qmc_mode {
+ QMC_TRANSPARENT,
+ QMC_HDLC,
+};
+
+struct qmc_chan_info {
+ enum qmc_mode mode;
+ unsigned long rx_fs_rate;
+ unsigned long rx_bit_rate;
+ u8 nb_rx_ts;
+ unsigned long tx_fs_rate;
+ unsigned long tx_bit_rate;
+ u8 nb_tx_ts;
+};
+
+int qmc_chan_get_info(struct qmc_chan *chan, struct qmc_chan_info *info);
+
+struct qmc_chan_param {
+ enum qmc_mode mode;
+ union {
+ struct {
+ u16 max_rx_buf_size;
+ u16 max_rx_frame_size;
+ bool is_crc32;
+ } hdlc;
+ struct {
+ u16 max_rx_buf_size;
+ } transp;
+ };
+};
+
+int qmc_chan_set_param(struct qmc_chan *chan, const struct qmc_chan_param *param);
+
+int qmc_chan_write_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length,
+ void (*complete)(void *context), void *context);
+
+int qmc_chan_read_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length,
+ void (*complete)(void *context, size_t length),
+ void *context);
+
+#define QMC_CHAN_READ (1<<0)
+#define QMC_CHAN_WRITE (1<<1)
+#define QMC_CHAN_ALL (QMC_CHAN_READ | QMC_CHAN_WRITE)
+
+int qmc_chan_start(struct qmc_chan *chan, int direction);
+int qmc_chan_stop(struct qmc_chan *chan, int direction);
+int qmc_chan_reset(struct qmc_chan *chan, int direction);
+
+#endif /* __SOC_FSL_QMC_H__ */
--
2.39.1
The QMC (QUICC mutichannel controller) is a controller
present in some PowerQUICC SoC such as MPC885.
The QMC audio is an ASoC component that uses the QMC
controller to transfer the audio data.
Signed-off-by: Herve Codina <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
---
.../bindings/sound/fsl,qmc-audio.yaml | 117 ++++++++++++++++++
1 file changed, 117 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
diff --git a/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
new file mode 100644
index 000000000000..ff5cd9241941
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/fsl,qmc-audio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: QMC audio
+
+maintainers:
+ - Herve Codina <[email protected]>
+
+description: |
+ The QMC audio is an ASoC component which uses QMC (QUICC Multichannel
+ Controller) channels to transfer the audio data.
+ It provides as many DAI as the number of QMC channel used.
+
+allOf:
+ - $ref: dai-common.yaml#
+
+properties:
+ compatible:
+ const: fsl,qmc-audio
+
+ '#address-cells':
+ const: 1
+ '#size-cells':
+ const: 0
+ '#sound-dai-cells':
+ const: 1
+
+patternProperties:
+ '^dai@([0-9]|[1-5][0-9]|6[0-3])$':
+ description:
+ A DAI managed by this controller
+ type: object
+
+ properties:
+ reg:
+ minimum: 0
+ maximum: 63
+ description:
+ The DAI number
+
+ fsl,qmc-chan:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description: phandle to QMC node
+ - description: Channel number
+ description:
+ Should be a phandle/number pair. The phandle to QMC node and the QMC
+ channel to use for this DAI.
+
+ required:
+ - reg
+ - fsl,qmc-chan
+
+required:
+ - compatible
+ - '#address-cells'
+ - '#size-cells'
+ - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ audio_controller: audio-controller {
+ compatible = "fsl,qmc-audio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #sound-dai-cells = <1>;
+ dai@16 {
+ reg = <16>;
+ fsl,qmc-chan = <&qmc 16>;
+ };
+ dai@17 {
+ reg = <17>;
+ fsl,qmc-chan = <&qmc 17>;
+ };
+ };
+
+ sound {
+ compatible = "simple-audio-card";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ simple-audio-card,dai-link@0 {
+ reg = <0>;
+ format = "dsp_b";
+ cpu {
+ sound-dai = <&audio_controller 16>;
+ };
+ codec {
+ sound-dai = <&codec1>;
+ dai-tdm-slot-num = <4>;
+ dai-tdm-slot-width = <8>;
+ /* TS 3, 5, 7, 9 */
+ dai-tdm-slot-tx-mask = <0 0 0 1 0 1 0 1 0 1>;
+ dai-tdm-slot-rx-mask = <0 0 0 1 0 1 0 1 0 1>;
+ };
+ };
+ simple-audio-card,dai-link@1 {
+ reg = <1>;
+ format = "dsp_b";
+ cpu {
+ sound-dai = <&audio_controller 17>;
+ };
+ codec {
+ sound-dai = <&codec2>;
+ dai-tdm-slot-num = <4>;
+ dai-tdm-slot-width = <8>;
+ /* TS 2, 4, 6, 8 */
+ dai-tdm-slot-tx-mask = <0 0 1 0 1 0 1 0 1>;
+ dai-tdm-slot-rx-mask = <0 0 1 0 1 0 1 0 1>;
+ };
+ };
+ };
--
2.39.1
The QMC audio is an ASoC component which provides DAIs
that use the QMC (QUICC Multichannel Controller) to transfer
the audio data.
It provides as many DAIs as the number of QMC channels it
references.
Signed-off-by: Herve Codina <[email protected]>
---
sound/soc/fsl/Kconfig | 9 +
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/fsl_qmc_audio.c | 735 ++++++++++++++++++++++++++++++++++
3 files changed, 746 insertions(+)
create mode 100644 sound/soc/fsl/fsl_qmc_audio.c
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 614eceda6b9e..17db29c25d96 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -172,6 +172,15 @@ config SND_MPC52xx_DMA
config SND_SOC_POWERPC_DMA
tristate
+config SND_SOC_POWERPC_QMC_AUDIO
+ tristate "QMC ALSA SoC support"
+ depends on CPM_QMC
+ help
+ ALSA SoC Audio support using the Freescale QUICC Multichannel
+ Controller (QMC).
+ Say Y or M if you want to add support for SoC audio using Freescale
+ QMC.
+
comment "SoC Audio support for Freescale PPC boards:"
config SND_SOC_MPC8610_HPCD
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index b54beb1a66fa..8db7e97d0bd5 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -28,6 +28,7 @@ snd-soc-fsl-easrc-objs := fsl_easrc.o
snd-soc-fsl-xcvr-objs := fsl_xcvr.o
snd-soc-fsl-aud2htx-objs := fsl_aud2htx.o
snd-soc-fsl-rpmsg-objs := fsl_rpmsg.o
+snd-soc-fsl-qmc-audio-objs := fsl_qmc_audio.o
obj-$(CONFIG_SND_SOC_FSL_AUDMIX) += snd-soc-fsl-audmix.o
obj-$(CONFIG_SND_SOC_FSL_ASOC_CARD) += snd-soc-fsl-asoc-card.o
@@ -44,6 +45,7 @@ obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o
obj-$(CONFIG_SND_SOC_FSL_XCVR) += snd-soc-fsl-xcvr.o
obj-$(CONFIG_SND_SOC_FSL_AUD2HTX) += snd-soc-fsl-aud2htx.o
obj-$(CONFIG_SND_SOC_FSL_RPMSG) += snd-soc-fsl-rpmsg.o
+obj-$(CONFIG_SND_SOC_POWERPC_QMC_AUDIO) += snd-soc-fsl-qmc-audio.o
# MPC5200 Platform Support
obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o
diff --git a/sound/soc/fsl/fsl_qmc_audio.c b/sound/soc/fsl/fsl_qmc_audio.c
new file mode 100644
index 000000000000..7cbb8e4758cc
--- /dev/null
+++ b/sound/soc/fsl/fsl_qmc_audio.c
@@ -0,0 +1,735 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ALSA SoC using the QUICC Multichannel Controller (QMC)
+ *
+ * Copyright 2022 CS GROUP France
+ *
+ * Author: Herve Codina <[email protected]>
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <soc/fsl/qe/qmc.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+struct qmc_dai {
+ char *name;
+ int id;
+ struct device *dev;
+ struct qmc_chan *qmc_chan;
+ unsigned int nb_tx_ts;
+ unsigned int nb_rx_ts;
+};
+
+struct qmc_audio {
+ struct device *dev;
+ unsigned int num_dais;
+ struct qmc_dai *dais;
+ struct snd_soc_dai_driver *dai_drivers;
+};
+
+struct qmc_dai_prtd {
+ struct qmc_dai *qmc_dai;
+ dma_addr_t dma_buffer_start;
+ dma_addr_t period_ptr_submitted;
+ dma_addr_t period_ptr_ended;
+ dma_addr_t dma_buffer_end;
+ size_t period_size;
+ struct snd_pcm_substream *substream;
+};
+
+static int qmc_audio_pcm_construct(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_card *card = rtd->card->snd_card;
+ int ret;
+
+ ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
+ if (ret)
+ return ret;
+
+ snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV, card->dev,
+ 64*1024, 64*1024);
+ return 0;
+}
+
+static int qmc_audio_pcm_hw_params(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct qmc_dai_prtd *prtd = substream->runtime->private_data;
+
+ prtd->dma_buffer_start = runtime->dma_addr;
+ prtd->dma_buffer_end = runtime->dma_addr + params_buffer_bytes(params);
+ prtd->period_size = params_period_bytes(params);
+ prtd->period_ptr_submitted = prtd->dma_buffer_start;
+ prtd->period_ptr_ended = prtd->dma_buffer_start;
+ prtd->substream = substream;
+
+ return 0;
+}
+
+static void qmc_audio_pcm_write_complete(void *context)
+{
+ struct qmc_dai_prtd *prtd = context;
+ int ret;
+
+ prtd->period_ptr_ended += prtd->period_size;
+ if (prtd->period_ptr_ended >= prtd->dma_buffer_end)
+ prtd->period_ptr_ended = prtd->dma_buffer_start;
+
+ prtd->period_ptr_submitted += prtd->period_size;
+ if (prtd->period_ptr_submitted >= prtd->dma_buffer_end)
+ prtd->period_ptr_submitted = prtd->dma_buffer_start;
+
+ ret = qmc_chan_write_submit(prtd->qmc_dai->qmc_chan,
+ prtd->period_ptr_submitted, prtd->period_size,
+ qmc_audio_pcm_write_complete, prtd);
+ if (ret) {
+ dev_err(prtd->qmc_dai->dev, "write_submit failed %d\n",
+ ret);
+ }
+
+ snd_pcm_period_elapsed(prtd->substream);
+}
+
+static void qmc_audio_pcm_read_complete(void *context, size_t length)
+{
+ struct qmc_dai_prtd *prtd = context;
+ int ret;
+
+ if (length != prtd->period_size) {
+ dev_err(prtd->qmc_dai->dev, "read complete length = %zu, exp %zu\n",
+ length, prtd->period_size);
+ }
+
+ prtd->period_ptr_ended += prtd->period_size;
+ if (prtd->period_ptr_ended >= prtd->dma_buffer_end)
+ prtd->period_ptr_ended = prtd->dma_buffer_start;
+
+ prtd->period_ptr_submitted += prtd->period_size;
+ if (prtd->period_ptr_submitted >= prtd->dma_buffer_end)
+ prtd->period_ptr_submitted = prtd->dma_buffer_start;
+
+ ret = qmc_chan_read_submit(prtd->qmc_dai->qmc_chan,
+ prtd->period_ptr_submitted, prtd->period_size,
+ qmc_audio_pcm_read_complete, prtd);
+ if (ret) {
+ dev_err(prtd->qmc_dai->dev, "read_submit failed %d\n",
+ ret);
+ }
+
+ snd_pcm_period_elapsed(prtd->substream);
+}
+
+static int qmc_audio_pcm_trigger(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int cmd)
+{
+ struct qmc_dai_prtd *prtd = substream->runtime->private_data;
+ int ret;
+
+ if (!prtd->qmc_dai) {
+ dev_err(component->dev, "qmc_dai is not set\n");
+ return -EINVAL;
+ }
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ /* Submit first chunk ... */
+ ret = qmc_chan_write_submit(prtd->qmc_dai->qmc_chan,
+ prtd->period_ptr_submitted, prtd->period_size,
+ qmc_audio_pcm_write_complete, prtd);
+ if (ret) {
+ dev_err(component->dev, "write_submit failed %d\n",
+ ret);
+ return ret;
+ }
+
+ /* ... prepare next one ... */
+ prtd->period_ptr_submitted += prtd->period_size;
+ if (prtd->period_ptr_submitted >= prtd->dma_buffer_end)
+ prtd->period_ptr_submitted = prtd->dma_buffer_start;
+
+ /* ... and send it */
+ ret = qmc_chan_write_submit(prtd->qmc_dai->qmc_chan,
+ prtd->period_ptr_submitted, prtd->period_size,
+ qmc_audio_pcm_write_complete, prtd);
+ if (ret) {
+ dev_err(component->dev, "write_submit failed %d\n",
+ ret);
+ return ret;
+ }
+ } else {
+ /* Submit first chunk ... */
+ ret = qmc_chan_read_submit(prtd->qmc_dai->qmc_chan,
+ prtd->period_ptr_submitted, prtd->period_size,
+ qmc_audio_pcm_read_complete, prtd);
+ if (ret) {
+ dev_err(component->dev, "read_submit failed %d\n",
+ ret);
+ return ret;
+ }
+
+ /* ... prepare next one ... */
+ prtd->period_ptr_submitted += prtd->period_size;
+ if (prtd->period_ptr_submitted >= prtd->dma_buffer_end)
+ prtd->period_ptr_submitted = prtd->dma_buffer_start;
+
+ /* ... and send it */
+ ret = qmc_chan_read_submit(prtd->qmc_dai->qmc_chan,
+ prtd->period_ptr_submitted, prtd->period_size,
+ qmc_audio_pcm_read_complete, prtd);
+ if (ret) {
+ dev_err(component->dev, "write_submit failed %d\n",
+ ret);
+ return ret;
+ }
+ }
+ break;
+
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static snd_pcm_uframes_t qmc_audio_pcm_pointer(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct qmc_dai_prtd *prtd = substream->runtime->private_data;
+
+ return bytes_to_frames(substream->runtime,
+ prtd->period_ptr_ended - prtd->dma_buffer_start);
+}
+
+static int qmc_audio_of_xlate_dai_name(struct snd_soc_component *component,
+ const struct of_phandle_args *args,
+ const char **dai_name)
+{
+ struct qmc_audio *qmc_audio = dev_get_drvdata(component->dev);
+ struct snd_soc_dai_driver *dai_driver;
+ int id = args->args[0];
+ int i;
+
+ for (i = 0; i < qmc_audio->num_dais; i++) {
+ dai_driver = qmc_audio->dai_drivers + i;
+ if (dai_driver->id == id) {
+ *dai_name = dai_driver->name;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static const struct snd_pcm_hardware qmc_audio_pcm_hardware = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_PAUSE,
+ .period_bytes_min = 32,
+ .period_bytes_max = 64*1024,
+ .periods_min = 2,
+ .periods_max = 2*1024,
+ .buffer_bytes_max = 64*1024,
+};
+
+static int qmc_audio_pcm_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct qmc_dai_prtd *prtd;
+ int ret;
+
+ snd_soc_set_runtime_hwparams(substream, &qmc_audio_pcm_hardware);
+
+ /* ensure that buffer size is a multiple of period size */
+ ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+ if (ret < 0)
+ return ret;
+
+ prtd = kzalloc(sizeof(*prtd), GFP_KERNEL);
+ if (prtd == NULL)
+ return -ENOMEM;
+
+ runtime->private_data = prtd;
+
+ return 0;
+}
+
+static int qmc_audio_pcm_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct qmc_dai_prtd *prtd = substream->runtime->private_data;
+
+ kfree(prtd);
+ return 0;
+}
+
+static const struct snd_soc_component_driver qmc_audio_soc_platform = {
+ .open = qmc_audio_pcm_open,
+ .close = qmc_audio_pcm_close,
+ .hw_params = qmc_audio_pcm_hw_params,
+ .trigger = qmc_audio_pcm_trigger,
+ .pointer = qmc_audio_pcm_pointer,
+ .pcm_construct = qmc_audio_pcm_construct,
+ .of_xlate_dai_name = qmc_audio_of_xlate_dai_name,
+};
+
+static unsigned int qmc_dai_get_index(struct snd_soc_dai *dai)
+{
+ struct qmc_audio *qmc_audio = snd_soc_dai_get_drvdata(dai);
+
+ return dai->driver - qmc_audio->dai_drivers;
+}
+
+static struct qmc_dai *qmc_dai_get_data(struct snd_soc_dai *dai)
+{
+ struct qmc_audio *qmc_audio = snd_soc_dai_get_drvdata(dai);
+ unsigned int index;
+
+ index = qmc_dai_get_index(dai);
+ if (index > qmc_audio->num_dais)
+ return NULL;
+
+ return qmc_audio->dais + index;
+}
+
+/*
+ * The constraints for format/channel is to match with the number of 8bit
+ * time-slots available.
+ */
+static int qmc_dai_hw_rule_channels_by_format(struct qmc_dai *qmc_dai,
+ struct snd_pcm_hw_params *params,
+ unsigned int nb_ts)
+{
+ struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+ snd_pcm_format_t format = params_format(params);
+ struct snd_interval ch = {0};
+
+ switch (snd_pcm_format_physical_width(format)) {
+ case 8:
+ ch.max = nb_ts;
+ break;
+ case 16:
+ ch.max = nb_ts/2;
+ break;
+ case 32:
+ ch.max = nb_ts/4;
+ break;
+ case 64:
+ ch.max = nb_ts/8;
+ break;
+ default:
+ dev_err(qmc_dai->dev, "format physical width %u not supported\n",
+ snd_pcm_format_physical_width(format));
+ return -EINVAL;
+ }
+
+ ch.min = ch.max ? 1 : 0;
+
+ return snd_interval_refine(c, &ch);
+}
+
+static int qmc_dai_hw_rule_playback_channels_by_format(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct qmc_dai *qmc_dai = rule->private;
+
+ return qmc_dai_hw_rule_channels_by_format(qmc_dai, params, qmc_dai->nb_tx_ts);
+}
+
+static int qmc_dai_hw_rule_capture_channels_by_format(
+ struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct qmc_dai *qmc_dai = rule->private;
+
+ return qmc_dai_hw_rule_channels_by_format(qmc_dai, params, qmc_dai->nb_rx_ts);
+}
+
+static int qmc_dai_hw_rule_format_by_channels(struct qmc_dai *qmc_dai,
+ struct snd_pcm_hw_params *params,
+ unsigned int nb_ts)
+{
+ struct snd_mask *f_old = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ unsigned int channels = params_channels(params);
+ unsigned int slot_width;
+ struct snd_mask f_new;
+ unsigned int i;
+
+ if (!channels || channels > nb_ts) {
+ dev_err(qmc_dai->dev, "channels %u not supported\n",
+ nb_ts);
+ return -EINVAL;
+ }
+
+ slot_width = (nb_ts / channels) * 8;
+
+ snd_mask_none(&f_new);
+ for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; i++) {
+ if (snd_mask_test(f_old, i)) {
+ if (snd_pcm_format_physical_width(i) <= slot_width)
+ snd_mask_set(&f_new, i);
+ }
+ }
+
+ return snd_mask_refine(f_old, &f_new);
+}
+
+static int qmc_dai_hw_rule_playback_format_by_channels(
+ struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct qmc_dai *qmc_dai = rule->private;
+
+ return qmc_dai_hw_rule_format_by_channels(qmc_dai, params, qmc_dai->nb_tx_ts);
+}
+
+static int qmc_dai_hw_rule_capture_format_by_channels(
+ struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct qmc_dai *qmc_dai = rule->private;
+
+ return qmc_dai_hw_rule_format_by_channels(qmc_dai, params, qmc_dai->nb_rx_ts);
+}
+
+static int qmc_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct qmc_dai_prtd *prtd = substream->runtime->private_data;
+ snd_pcm_hw_rule_func_t hw_rule_channels_by_format;
+ snd_pcm_hw_rule_func_t hw_rule_format_by_channels;
+ struct qmc_dai *qmc_dai;
+ unsigned int frame_bits;
+ int ret;
+
+ qmc_dai = qmc_dai_get_data(dai);
+ if (!qmc_dai) {
+ dev_err(dai->dev, "Invalid dai\n");
+ return -EINVAL;
+ }
+
+ prtd->qmc_dai = qmc_dai;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ hw_rule_channels_by_format = qmc_dai_hw_rule_capture_channels_by_format;
+ hw_rule_format_by_channels = qmc_dai_hw_rule_capture_format_by_channels;
+ frame_bits = qmc_dai->nb_rx_ts * 8;
+ } else {
+ hw_rule_channels_by_format = qmc_dai_hw_rule_playback_channels_by_format;
+ hw_rule_format_by_channels = qmc_dai_hw_rule_playback_format_by_channels;
+ frame_bits = qmc_dai->nb_tx_ts * 8;
+ }
+
+ ret = snd_pcm_hw_rule_add(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ hw_rule_channels_by_format, qmc_dai,
+ SNDRV_PCM_HW_PARAM_FORMAT, -1);
+ if (ret) {
+ dev_err(dai->dev, "Failed to add channels rule (%d)\n", ret);
+ return ret;
+ }
+
+ ret = snd_pcm_hw_rule_add(substream->runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
+ hw_rule_format_by_channels, qmc_dai,
+ SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+ if (ret) {
+ dev_err(dai->dev, "Failed to add format rule (%d)\n", ret);
+ return ret;
+ }
+
+ ret = snd_pcm_hw_constraint_single(substream->runtime,
+ SNDRV_PCM_HW_PARAM_FRAME_BITS,
+ frame_bits);
+ if (ret < 0) {
+ dev_err(dai->dev, "Failed to add frame_bits constraint (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int qmc_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct qmc_chan_param chan_param = {0};
+ struct qmc_dai *qmc_dai;
+ int ret;
+
+ qmc_dai = qmc_dai_get_data(dai);
+ if (!qmc_dai) {
+ dev_err(dai->dev, "Invalid dai\n");
+ return -EINVAL;
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ chan_param.mode = QMC_TRANSPARENT;
+ chan_param.transp.max_rx_buf_size = params_period_bytes(params);
+ ret = qmc_chan_set_param(qmc_dai->qmc_chan, &chan_param);
+ if (ret) {
+ dev_err(dai->dev, "set param failed %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int qmc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct qmc_dai *qmc_dai;
+ int direction;
+ int ret;
+
+ qmc_dai = qmc_dai_get_data(dai);
+ if (!qmc_dai) {
+ dev_err(dai->dev, "Invalid dai\n");
+ return -EINVAL;
+ }
+
+ direction = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+ QMC_CHAN_WRITE : QMC_CHAN_READ;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ ret = qmc_chan_start(qmc_dai->qmc_chan, direction);
+ if (ret)
+ return ret;
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ ret = qmc_chan_stop(qmc_dai->qmc_chan, direction);
+ if (ret)
+ return ret;
+ ret = qmc_chan_reset(qmc_dai->qmc_chan, direction);
+ if (ret)
+ return ret;
+ break;
+
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ ret = qmc_chan_stop(qmc_dai->qmc_chan, direction);
+ if (ret)
+ return ret;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops qmc_dai_ops = {
+ .startup = qmc_dai_startup,
+ .trigger = qmc_dai_trigger,
+ .hw_params = qmc_dai_hw_params,
+};
+
+static u64 qmc_audio_formats(u8 nb_ts)
+{
+ u64 formats;
+ unsigned int chan_width;
+ unsigned int format_width;
+ int i;
+
+ if (!nb_ts)
+ return 0;
+
+ formats = 0;
+ chan_width = nb_ts * 8;
+ for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; i++) {
+ /*
+ * Support format other than little-endian (ie big-endian or
+ * without endianness such as 8bit formats)
+ */
+ if (snd_pcm_format_little_endian(i) == 1)
+ continue;
+
+ /* Support physical width multiple of 8bit */
+ format_width = snd_pcm_format_physical_width(i);
+ if (format_width == 0 || format_width % 8)
+ continue;
+
+ /*
+ * And support physical width that can fit N times in the
+ * channel
+ */
+ if (format_width > chan_width || chan_width % format_width)
+ continue;
+
+ formats |= (1ULL << i);
+ }
+ return formats;
+}
+
+static int qmc_audio_dai_parse(struct qmc_audio *qmc_audio, struct device_node *np,
+ struct qmc_dai *qmc_dai, struct snd_soc_dai_driver *qmc_soc_dai_driver)
+{
+ struct qmc_chan_info info;
+ u32 val;
+ int ret;
+
+ qmc_dai->dev = qmc_audio->dev;
+
+ ret = of_property_read_u32(np, "reg", &val);
+ if (ret) {
+ dev_err(qmc_audio->dev, "%pOF: failed to read reg\n", np);
+ return ret;
+ }
+ qmc_dai->id = val;
+
+ qmc_dai->name = devm_kasprintf(qmc_audio->dev, GFP_KERNEL, "%s.%d",
+ np->parent->name, qmc_dai->id);
+
+ qmc_dai->qmc_chan = devm_qmc_chan_get_byphandle(qmc_audio->dev, np,
+ "fsl,qmc-chan");
+ if (IS_ERR(qmc_dai->qmc_chan)) {
+ ret = PTR_ERR(qmc_dai->qmc_chan);
+ return dev_err_probe(qmc_audio->dev, ret,
+ "dai %d get QMC channel failed\n", qmc_dai->id);
+ }
+
+ qmc_soc_dai_driver->id = qmc_dai->id;
+ qmc_soc_dai_driver->name = qmc_dai->name;
+
+ ret = qmc_chan_get_info(qmc_dai->qmc_chan, &info);
+ if (ret) {
+ dev_err(qmc_audio->dev, "dai %d get QMC channel info failed %d\n",
+ qmc_dai->id, ret);
+ return ret;
+ }
+ dev_info(qmc_audio->dev, "dai %d QMC channel mode %d, nb_tx_ts %u, nb_rx_ts %u\n",
+ qmc_dai->id, info.mode, info.nb_tx_ts, info.nb_rx_ts);
+
+ if (info.mode != QMC_TRANSPARENT) {
+ dev_err(qmc_audio->dev, "dai %d QMC chan mode %d is not QMC_TRANSPARENT\n",
+ qmc_dai->id, info.mode);
+ return -EINVAL;
+ }
+ qmc_dai->nb_tx_ts = info.nb_tx_ts;
+ qmc_dai->nb_rx_ts = info.nb_rx_ts;
+
+ qmc_soc_dai_driver->playback.channels_min = 0;
+ qmc_soc_dai_driver->playback.channels_max = 0;
+ if (qmc_dai->nb_tx_ts) {
+ qmc_soc_dai_driver->playback.channels_min = 1;
+ qmc_soc_dai_driver->playback.channels_max = qmc_dai->nb_tx_ts;
+ }
+ qmc_soc_dai_driver->playback.formats = qmc_audio_formats(qmc_dai->nb_tx_ts);
+
+ qmc_soc_dai_driver->capture.channels_min = 0;
+ qmc_soc_dai_driver->capture.channels_max = 0;
+ if (qmc_dai->nb_rx_ts) {
+ qmc_soc_dai_driver->capture.channels_min = 1;
+ qmc_soc_dai_driver->capture.channels_max = qmc_dai->nb_rx_ts;
+ }
+ qmc_soc_dai_driver->capture.formats = qmc_audio_formats(qmc_dai->nb_rx_ts);
+
+ qmc_soc_dai_driver->playback.rates = snd_pcm_rate_to_rate_bit(info.tx_fs_rate);
+ qmc_soc_dai_driver->playback.rate_min = info.tx_fs_rate;
+ qmc_soc_dai_driver->playback.rate_max = info.tx_fs_rate;
+ qmc_soc_dai_driver->capture.rates = snd_pcm_rate_to_rate_bit(info.rx_fs_rate);
+ qmc_soc_dai_driver->capture.rate_min = info.rx_fs_rate;
+ qmc_soc_dai_driver->capture.rate_max = info.rx_fs_rate;
+
+ qmc_soc_dai_driver->ops = &qmc_dai_ops;
+
+ return 0;
+}
+
+static int qmc_audio_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct qmc_audio *qmc_audio;
+ struct device_node *child;
+ unsigned int i;
+ int ret;
+
+ qmc_audio = devm_kzalloc(&pdev->dev, sizeof(*qmc_audio), GFP_KERNEL);
+ if (!qmc_audio)
+ return -ENOMEM;
+
+ qmc_audio->dev = &pdev->dev;
+
+ qmc_audio->num_dais = of_get_available_child_count(np);
+ if (qmc_audio->num_dais) {
+ qmc_audio->dais = devm_kcalloc(&pdev->dev, qmc_audio->num_dais,
+ sizeof(*qmc_audio->dais),
+ GFP_KERNEL);
+ if (!qmc_audio->dais)
+ return -ENOMEM;
+
+ qmc_audio->dai_drivers = devm_kcalloc(&pdev->dev, qmc_audio->num_dais,
+ sizeof(*qmc_audio->dai_drivers),
+ GFP_KERNEL);
+ if (!qmc_audio->dai_drivers)
+ return -ENOMEM;
+ }
+
+ i = 0;
+ for_each_available_child_of_node(np, child) {
+ ret = qmc_audio_dai_parse(qmc_audio, child,
+ qmc_audio->dais + i,
+ qmc_audio->dai_drivers + i);
+ if (ret) {
+ of_node_put(child);
+ return ret;
+ }
+ i++;
+ }
+
+
+ platform_set_drvdata(pdev, qmc_audio);
+
+ ret = devm_snd_soc_register_component(qmc_audio->dev,
+ &qmc_audio_soc_platform,
+ qmc_audio->dai_drivers,
+ qmc_audio->num_dais);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const struct of_device_id qmc_audio_id_table[] = {
+ { .compatible = "fsl,qmc-audio" },
+ {} /* sentinel */
+};
+MODULE_DEVICE_TABLE(of, qmc_audio_id_table);
+
+static struct platform_driver qmc_audio_driver = {
+ .driver = {
+ .name = "fsl-qmc-audio",
+ .of_match_table = of_match_ptr(qmc_audio_id_table),
+ },
+ .probe = qmc_audio_probe,
+};
+module_platform_driver(qmc_audio_driver);
+
+MODULE_AUTHOR("Herve Codina <[email protected]>");
+MODULE_DESCRIPTION("CPM/QE QMC audio driver");
+MODULE_LICENSE("GPL");
--
2.39.1
After contributing the component, add myself as the maintainer
for the Freescale QMC audio ASoC component.
Signed-off-by: Herve Codina <[email protected]>
---
MAINTAINERS | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index f8d0981a16ca..a677e2862878 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8440,6 +8440,14 @@ F: sound/soc/fsl/fsl*
F: sound/soc/fsl/imx*
F: sound/soc/fsl/mpc8610_hpcd.c
+FREESCALE SOC SOUND QMC DRIVER
+M: Herve Codina <[email protected]>
+L: [email protected] (moderated for non-subscribers)
+L: [email protected]
+S: Maintained
+F: Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
+F: sound/soc/fsl/fsl_qmc_audio.c
+
FREESCALE USB PERIPHERAL DRIVERS
M: Li Yang <[email protected]>
L: [email protected]
--
2.39.1
> -----Original Message-----
> From: Herve Codina <[email protected]>
> Sent: Thursday, February 16, 2023 7:42 AM
> To: Herve Codina <[email protected]>; Leo Li
> <[email protected]>; Rob Herring <[email protected]>; Krzysztof
> Kozlowski <[email protected]>; Liam Girdwood
> <[email protected]>; Mark Brown <[email protected]>; Christophe
> Leroy <[email protected]>; Michael Ellerman
> <[email protected]>; Nicholas Piggin <[email protected]>; Qiang Zhao
> <[email protected]>; Jaroslav Kysela <[email protected]>; Takashi Iwai
> <[email protected]>; Shengjiu Wang <[email protected]>; Xiubo Li
> <[email protected]>; Fabio Estevam <[email protected]>; Nicolin
> Chen <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected]; alsa-devel@alsa-
> project.org; Thomas Petazzoni <[email protected]>
> Subject: [PATCH v5 02/10] soc: fsl: cpm1: Add support for TSA
>
> The TSA (Time Slot Assigner) purpose is to route some
> TDM time-slots to other internal serial controllers.
>
> It is available in some PowerQUICC SoC such as the
> MPC885 or MPC866.
>
> It is also available on some Quicc Engine SoCs.
> This current version support CPM1 SoCs only and some
> enhancement are needed to support Quicc Engine SoCs.
>
> Signed-off-by: Herve Codina <[email protected]>
Looks good to me
Acked-by: Li Yang <[email protected]>
> ---
> drivers/soc/fsl/qe/Kconfig | 11 +
> drivers/soc/fsl/qe/Makefile | 1 +
> drivers/soc/fsl/qe/tsa.c | 869
> ++++++++++++++++++++++++++++++++++++
> drivers/soc/fsl/qe/tsa.h | 42 ++
> 4 files changed, 923 insertions(+)
> create mode 100644 drivers/soc/fsl/qe/tsa.c
> create mode 100644 drivers/soc/fsl/qe/tsa.h
>
> diff --git a/drivers/soc/fsl/qe/Kconfig b/drivers/soc/fsl/qe/Kconfig
> index 357c5800b112..b0088495c323 100644
> --- a/drivers/soc/fsl/qe/Kconfig
> +++ b/drivers/soc/fsl/qe/Kconfig
> @@ -33,6 +33,17 @@ config UCC
> bool
> default y if UCC_FAST || UCC_SLOW
>
> +config CPM_TSA
> + tristate "CPM TSA support"
> + depends on OF && HAS_IOMEM
> + depends on CPM1 || COMPILE_TEST
> + help
> + Freescale CPM Time Slot Assigner (TSA)
> + controller.
> +
> + This option enables support for this
> + controller
> +
> config QE_TDM
> bool
> default y if FSL_UCC_HDLC
> diff --git a/drivers/soc/fsl/qe/Makefile b/drivers/soc/fsl/qe/Makefile
> index 55a555304f3a..45c961acc81b 100644
> --- a/drivers/soc/fsl/qe/Makefile
> +++ b/drivers/soc/fsl/qe/Makefile
> @@ -4,6 +4,7 @@
> #
> obj-$(CONFIG_QUICC_ENGINE)+= qe.o qe_common.o qe_ic.o qe_io.o
> obj-$(CONFIG_CPM) += qe_common.o
> +obj-$(CONFIG_CPM_TSA) += tsa.o
> obj-$(CONFIG_UCC) += ucc.o
> obj-$(CONFIG_UCC_SLOW) += ucc_slow.o
> obj-$(CONFIG_UCC_FAST) += ucc_fast.o
> diff --git a/drivers/soc/fsl/qe/tsa.c b/drivers/soc/fsl/qe/tsa.c
> new file mode 100644
> index 000000000000..90d9a5254d9b
> --- /dev/null
> +++ b/drivers/soc/fsl/qe/tsa.c
> @@ -0,0 +1,869 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * TSA driver
> + *
> + * Copyright 2022 CS GROUP France
> + *
> + * Author: Herve Codina <[email protected]>
> + */
> +
> +#include "tsa.h"
> +#include <dt-bindings/soc/fsl,tsa.h>
> +#include <linux/clk.h>
> +#include <linux/io.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +
> +
> +/* TSA SI RAM routing tables entry */
> +#define TSA_SIRAM_ENTRY_LAST (1 << 16)
> +#define TSA_SIRAM_ENTRY_BYTE (1 << 17)
> +#define TSA_SIRAM_ENTRY_CNT(x) (((x) & 0x0f) << 18)
> +#define TSA_SIRAM_ENTRY_CSEL_MASK (0x7 << 22)
> +#define TSA_SIRAM_ENTRY_CSEL_NU (0x0 << 22)
> +#define TSA_SIRAM_ENTRY_CSEL_SCC2 (0x2 << 22)
> +#define TSA_SIRAM_ENTRY_CSEL_SCC3 (0x3 << 22)
> +#define TSA_SIRAM_ENTRY_CSEL_SCC4 (0x4 << 22)
> +#define TSA_SIRAM_ENTRY_CSEL_SMC1 (0x5 << 22)
> +#define TSA_SIRAM_ENTRY_CSEL_SMC2 (0x6 << 22)
> +
> +/* SI mode register (32 bits) */
> +#define TSA_SIMODE 0x00
> +#define TSA_SIMODE_SMC2 0x80000000
> +#define TSA_SIMODE_SMC1 0x00008000
> +#define TSA_SIMODE_TDMA(x) ((x) << 0)
> +#define TSA_SIMODE_TDMB(x) ((x) << 16)
> +#define TSA_SIMODE_TDM_MASK 0x0fff
> +#define TSA_SIMODE_TDM_SDM_MASK 0x0c00
> +#define TSA_SIMODE_TDM_SDM_NORM 0x0000
> +#define TSA_SIMODE_TDM_SDM_ECHO 0x0400
> +#define TSA_SIMODE_TDM_SDM_INTL_LOOP 0x0800
> +#define TSA_SIMODE_TDM_SDM_LOOP_CTRL 0x0c00
> +#define TSA_SIMODE_TDM_RFSD(x) ((x) << 8)
> +#define TSA_SIMODE_TDM_DSC 0x0080
> +#define TSA_SIMODE_TDM_CRT 0x0040
> +#define TSA_SIMODE_TDM_STZ 0x0020
> +#define TSA_SIMODE_TDM_CE 0x0010
> +#define TSA_SIMODE_TDM_FE 0x0008
> +#define TSA_SIMODE_TDM_GM 0x0004
> +#define TSA_SIMODE_TDM_TFSD(x) ((x) << 0)
> +
> +/* SI global mode register (8 bits) */
> +#define TSA_SIGMR 0x04
> +#define TSA_SIGMR_ENB (1<<3)
> +#define TSA_SIGMR_ENA (1<<2)
> +#define TSA_SIGMR_RDM_MASK 0x03
> +#define TSA_SIGMR_RDM_STATIC_TDMA 0x00
> +#define TSA_SIGMR_RDM_DYN_TDMA 0x01
> +#define TSA_SIGMR_RDM_STATIC_TDMAB 0x02
> +#define TSA_SIGMR_RDM_DYN_TDMAB 0x03
> +
> +/* SI status register (8 bits) */
> +#define TSA_SISTR 0x06
> +
> +/* SI command register (8 bits) */
> +#define TSA_SICMR 0x07
> +
> +/* SI clock route register (32 bits) */
> +#define TSA_SICR 0x0C
> +#define TSA_SICR_SCC2(x) ((x) << 8)
> +#define TSA_SICR_SCC3(x) ((x) << 16)
> +#define TSA_SICR_SCC4(x) ((x) << 24)
> +#define TSA_SICR_SCC_MASK 0x0ff
> +#define TSA_SICR_SCC_GRX (1 << 7)
> +#define TSA_SICR_SCC_SCX_TSA (1 << 6)
> +#define TSA_SICR_SCC_RXCS_MASK (0x7 << 3)
> +#define TSA_SICR_SCC_RXCS_BRG1 (0x0 << 3)
> +#define TSA_SICR_SCC_RXCS_BRG2 (0x1 << 3)
> +#define TSA_SICR_SCC_RXCS_BRG3 (0x2 << 3)
> +#define TSA_SICR_SCC_RXCS_BRG4 (0x3 << 3)
> +#define TSA_SICR_SCC_RXCS_CLK15 (0x4 << 3)
> +#define TSA_SICR_SCC_RXCS_CLK26 (0x5 << 3)
> +#define TSA_SICR_SCC_RXCS_CLK37 (0x6 << 3)
> +#define TSA_SICR_SCC_RXCS_CLK48 (0x7 << 3)
> +#define TSA_SICR_SCC_TXCS_MASK (0x7 << 0)
> +#define TSA_SICR_SCC_TXCS_BRG1 (0x0 << 0)
> +#define TSA_SICR_SCC_TXCS_BRG2 (0x1 << 0)
> +#define TSA_SICR_SCC_TXCS_BRG3 (0x2 << 0)
> +#define TSA_SICR_SCC_TXCS_BRG4 (0x3 << 0)
> +#define TSA_SICR_SCC_TXCS_CLK15 (0x4 << 0)
> +#define TSA_SICR_SCC_TXCS_CLK26 (0x5 << 0)
> +#define TSA_SICR_SCC_TXCS_CLK37 (0x6 << 0)
> +#define TSA_SICR_SCC_TXCS_CLK48 (0x7 << 0)
> +
> +/* Serial interface RAM pointer register (32 bits) */
> +#define TSA_SIRP 0x10
> +
> +struct tsa_entries_area {
> + void *__iomem entries_start;
> + void *__iomem entries_next;
> + void *__iomem last_entry;
> +};
> +
> +struct tsa_tdm {
> + bool is_enable;
> + struct clk *l1rclk_clk;
> + struct clk *l1rsync_clk;
> + struct clk *l1tclk_clk;
> + struct clk *l1tsync_clk;
> + u32 simode_tdm;
> +};
> +
> +#define TSA_TDMA 0
> +#define TSA_TDMB 1
> +
> +struct tsa {
> + struct device *dev;
> + void *__iomem si_regs;
> + void *__iomem si_ram;
> + resource_size_t si_ram_sz;
> + spinlock_t lock;
> + int tdms; /* TSA_TDMx ORed */
> + struct tsa_tdm tdm[2]; /* TDMa and TDMb */
> + struct tsa_serial {
> + unsigned int id;
> + struct tsa_serial_info info;
> + } serials[6];
> +};
> +
> +static inline struct tsa *tsa_serial_get_tsa(struct tsa_serial *tsa_serial)
> +{
> + /* The serials table is indexed by the serial id */
> + return container_of(tsa_serial, struct tsa, serials[tsa_serial->id]);
> +}
> +
> +static inline void tsa_write32(void *__iomem addr, u32 val)
> +{
> + iowrite32be(val, addr);
> +}
> +
> +static inline void tsa_write8(void *__iomem addr, u32 val)
> +{
> + iowrite8(val, addr);
> +}
> +
> +static inline u32 tsa_read32(void *__iomem addr)
> +{
> + return ioread32be(addr);
> +}
> +
> +static inline void tsa_clrbits32(void *__iomem addr, u32 clr)
> +{
> + tsa_write32(addr, tsa_read32(addr) & ~clr);
> +}
> +
> +static inline void tsa_clrsetbits32(void *__iomem addr, u32 clr, u32 set)
> +{
> + tsa_write32(addr, (tsa_read32(addr) & ~clr) | set);
> +}
> +
> +int tsa_serial_connect(struct tsa_serial *tsa_serial)
> +{
> + struct tsa *tsa = tsa_serial_get_tsa(tsa_serial);
> + unsigned long flags;
> + u32 clear;
> + u32 set;
> +
> + switch (tsa_serial->id) {
> + case FSL_CPM_TSA_SCC2:
> + clear = TSA_SICR_SCC2(TSA_SICR_SCC_MASK);
> + set = TSA_SICR_SCC2(TSA_SICR_SCC_SCX_TSA);
> + break;
> + case FSL_CPM_TSA_SCC3:
> + clear = TSA_SICR_SCC3(TSA_SICR_SCC_MASK);
> + set = TSA_SICR_SCC3(TSA_SICR_SCC_SCX_TSA);
> + break;
> + case FSL_CPM_TSA_SCC4:
> + clear = TSA_SICR_SCC4(TSA_SICR_SCC_MASK);
> + set = TSA_SICR_SCC4(TSA_SICR_SCC_SCX_TSA);
> + break;
> + default:
> + dev_err(tsa->dev, "Unsupported serial id %u\n", tsa_serial-
> >id);
> + return -EINVAL;
> + }
> +
> + spin_lock_irqsave(&tsa->lock, flags);
> + tsa_clrsetbits32(tsa->si_regs + TSA_SICR, clear, set);
> + spin_unlock_irqrestore(&tsa->lock, flags);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(tsa_serial_connect);
> +
> +int tsa_serial_disconnect(struct tsa_serial *tsa_serial)
> +{
> + struct tsa *tsa = tsa_serial_get_tsa(tsa_serial);
> + unsigned long flags;
> + u32 clear;
> +
> + switch (tsa_serial->id) {
> + case FSL_CPM_TSA_SCC2:
> + clear = TSA_SICR_SCC2(TSA_SICR_SCC_MASK);
> + break;
> + case FSL_CPM_TSA_SCC3:
> + clear = TSA_SICR_SCC3(TSA_SICR_SCC_MASK);
> + break;
> + case FSL_CPM_TSA_SCC4:
> + clear = TSA_SICR_SCC4(TSA_SICR_SCC_MASK);
> + break;
> + default:
> + dev_err(tsa->dev, "Unsupported serial id %u\n", tsa_serial-
> >id);
> + return -EINVAL;
> + }
> +
> + spin_lock_irqsave(&tsa->lock, flags);
> + tsa_clrsetbits32(tsa->si_regs + TSA_SICR, clear, 0);
> + spin_unlock_irqrestore(&tsa->lock, flags);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(tsa_serial_disconnect);
> +
> +int tsa_serial_get_info(struct tsa_serial *tsa_serial, struct tsa_serial_info
> *info)
> +{
> + memcpy(info, &tsa_serial->info, sizeof(*info));
> + return 0;
> +}
> +EXPORT_SYMBOL(tsa_serial_get_info);
> +
> +static void tsa_init_entries_area(struct tsa *tsa, struct tsa_entries_area
> *area,
> + u32 tdms, u32 tdm_id, bool is_rx)
> +{
> + resource_size_t quarter;
> + resource_size_t half;
> +
> + quarter = tsa->si_ram_sz/4;
> + half = tsa->si_ram_sz/2;
> +
> + if (tdms == BIT(TSA_TDMA)) {
> + /* Only TDMA */
> + if (is_rx) {
> + /* First half of si_ram */
> + area->entries_start = tsa->si_ram;
> + area->entries_next = area->entries_start + half;
> + area->last_entry = NULL;
> + } else {
> + /* Second half of si_ram */
> + area->entries_start = tsa->si_ram + half;
> + area->entries_next = area->entries_start + half;
> + area->last_entry = NULL;
> + }
> + } else {
> + /* Only TDMB or both TDMs */
> + if (tdm_id == TSA_TDMA) {
> + if (is_rx) {
> + /* First half of first half of si_ram */
> + area->entries_start = tsa->si_ram;
> + area->entries_next = area->entries_start +
> quarter;
> + area->last_entry = NULL;
> + } else {
> + /* First half of second half of si_ram */
> + area->entries_start = tsa->si_ram + (2 *
> quarter);
> + area->entries_next = area->entries_start +
> quarter;
> + area->last_entry = NULL;
> + }
> + } else {
> + if (is_rx) {
> + /* Second half of first half of si_ram */
> + area->entries_start = tsa->si_ram + quarter;
> + area->entries_next = area->entries_start +
> quarter;
> + area->last_entry = NULL;
> + } else {
> + /* Second half of second half of si_ram */
> + area->entries_start = tsa->si_ram + (3 *
> quarter);
> + area->entries_next = area->entries_start +
> quarter;
> + area->last_entry = NULL;
> + }
> + }
> + }
> +}
> +
> +static const char *tsa_serial_id2name(struct tsa *tsa, u32 serial_id)
> +{
> + switch (serial_id) {
> + case FSL_CPM_TSA_NU: return "Not used";
> + case FSL_CPM_TSA_SCC2: return "SCC2";
> + case FSL_CPM_TSA_SCC3: return "SCC3";
> + case FSL_CPM_TSA_SCC4: return "SCC4";
> + case FSL_CPM_TSA_SMC1: return "SMC1";
> + case FSL_CPM_TSA_SMC2: return "SMC2";
> + default:
> + break;
> + }
> + return NULL;
> +}
> +
> +static u32 tsa_serial_id2csel(struct tsa *tsa, u32 serial_id)
> +{
> + switch (serial_id) {
> + case FSL_CPM_TSA_SCC2: return
> TSA_SIRAM_ENTRY_CSEL_SCC2;
> + case FSL_CPM_TSA_SCC3: return
> TSA_SIRAM_ENTRY_CSEL_SCC3;
> + case FSL_CPM_TSA_SCC4: return
> TSA_SIRAM_ENTRY_CSEL_SCC4;
> + case FSL_CPM_TSA_SMC1: return
> TSA_SIRAM_ENTRY_CSEL_SMC1;
> + case FSL_CPM_TSA_SMC2: return
> TSA_SIRAM_ENTRY_CSEL_SMC2;
> + default:
> + break;
> + }
> + return TSA_SIRAM_ENTRY_CSEL_NU;
> +}
> +
> +static int tsa_add_entry(struct tsa *tsa, struct tsa_entries_area *area,
> + u32 count, u32 serial_id)
> +{
> + void *__iomem addr;
> + u32 left;
> + u32 val;
> + u32 cnt;
> + u32 nb;
> +
> + addr = area->last_entry ? area->last_entry + 4 : area->entries_start;
> +
> + nb = DIV_ROUND_UP(count, 8);
> + if ((addr + (nb * 4)) > area->entries_next) {
> + dev_err(tsa->dev, "si ram area full\n");
> + return -ENOSPC;
> + }
> +
> + if (area->last_entry) {
> + /* Clear last flag */
> + tsa_clrbits32(area->last_entry, TSA_SIRAM_ENTRY_LAST);
> + }
> +
> + left = count;
> + while (left) {
> + val = TSA_SIRAM_ENTRY_BYTE | tsa_serial_id2csel(tsa,
> serial_id);
> +
> + if (left > 16) {
> + cnt = 16;
> + } else {
> + cnt = left;
> + val |= TSA_SIRAM_ENTRY_LAST;
> + area->last_entry = addr;
> + }
> + val |= TSA_SIRAM_ENTRY_CNT(cnt - 1);
> +
> + tsa_write32(addr, val);
> + addr += 4;
> + left -= cnt;
> + }
> +
> + return 0;
> +}
> +
> +static int tsa_of_parse_tdm_route(struct tsa *tsa, struct device_node
> *tdm_np,
> + u32 tdms, u32 tdm_id, bool is_rx)
> +{
> + struct tsa_entries_area area;
> + const char *route_name;
> + u32 serial_id;
> + int len, i;
> + u32 count;
> + const char *serial_name;
> + struct tsa_serial_info *serial_info;
> + struct tsa_tdm *tdm;
> + int ret;
> + u32 ts;
> +
> + route_name = is_rx ? "fsl,rx-ts-routes" : "fsl,tx-ts-routes";
> +
> + len = of_property_count_u32_elems(tdm_np, route_name);
> + if (len < 0) {
> + dev_err(tsa->dev, "%pOF: failed to read %s\n", tdm_np,
> route_name);
> + return len;
> + }
> + if (len % 2 != 0) {
> + dev_err(tsa->dev, "%pOF: wrong %s format\n", tdm_np,
> route_name);
> + return -EINVAL;
> + }
> +
> + tsa_init_entries_area(tsa, &area, tdms, tdm_id, is_rx);
> + ts = 0;
> + for (i = 0; i < len; i += 2) {
> + of_property_read_u32_index(tdm_np, route_name, i,
> &count);
> + of_property_read_u32_index(tdm_np, route_name, i + 1,
> &serial_id);
> +
> + if (serial_id >= ARRAY_SIZE(tsa->serials)) {
> + dev_err(tsa->dev, "%pOF: invalid serial id (%u)\n",
> + tdm_np, serial_id);
> + return -EINVAL;
> + }
> +
> + serial_name = tsa_serial_id2name(tsa, serial_id);
> + if (!serial_name) {
> + dev_err(tsa->dev, "%pOF: unsupported serial id
> (%u)\n",
> + tdm_np, serial_id);
> + return -EINVAL;
> + }
> +
> + dev_dbg(tsa->dev, "tdm_id=%u, %s ts %u..%u -> %s\n",
> + tdm_id, route_name, ts, ts+count-1, serial_name);
> + ts += count;
> +
> + ret = tsa_add_entry(tsa, &area, count, serial_id);
> + if (ret)
> + return ret;
> +
> + serial_info = &tsa->serials[serial_id].info;
> + tdm = &tsa->tdm[tdm_id];
> + if (is_rx) {
> + serial_info->rx_fs_rate = clk_get_rate(tdm-
> >l1rsync_clk);
> + serial_info->rx_bit_rate = clk_get_rate(tdm-
> >l1rclk_clk);
> + serial_info->nb_rx_ts += count;
> + } else {
> + serial_info->tx_fs_rate = tdm->l1tsync_clk ?
> + clk_get_rate(tdm->l1tsync_clk) :
> + clk_get_rate(tdm->l1rsync_clk);
> + serial_info->tx_bit_rate = tdm->l1tclk_clk ?
> + clk_get_rate(tdm->l1tclk_clk) :
> + clk_get_rate(tdm->l1rclk_clk);
> + serial_info->nb_tx_ts += count;
> + }
> + }
> + return 0;
> +}
> +
> +static inline int tsa_of_parse_tdm_rx_route(struct tsa *tsa,
> + struct device_node *tdm_np,
> + u32 tdms, u32 tdm_id)
> +{
> + return tsa_of_parse_tdm_route(tsa, tdm_np, tdms, tdm_id, true);
> +}
> +
> +static inline int tsa_of_parse_tdm_tx_route(struct tsa *tsa,
> + struct device_node *tdm_np,
> + u32 tdms, u32 tdm_id)
> +{
> + return tsa_of_parse_tdm_route(tsa, tdm_np, tdms, tdm_id, false);
> +}
> +
> +static int tsa_of_parse_tdms(struct tsa *tsa, struct device_node *np)
> +{
> + struct device_node *tdm_np;
> + struct tsa_tdm *tdm;
> + struct clk *clk;
> + const char *mode;
> + u32 tdm_id, val;
> + int ret;
> + int i;
> +
> + tsa->tdms = 0;
> + tsa->tdm[0].is_enable = false;
> + tsa->tdm[1].is_enable = false;
> +
> + for_each_available_child_of_node(np, tdm_np) {
> + ret = of_property_read_u32(tdm_np, "reg", &tdm_id);
> + if (ret) {
> + dev_err(tsa->dev, "%pOF: failed to read reg\n",
> tdm_np);
> + of_node_put(tdm_np);
> + return ret;
> + }
> + switch (tdm_id) {
> + case 0:
> + tsa->tdms |= BIT(TSA_TDMA);
> + break;
> + case 1:
> + tsa->tdms |= BIT(TSA_TDMB);
> + break;
> + default:
> + dev_err(tsa->dev, "%pOF: Invalid tdm_id (%u)\n",
> tdm_np,
> + tdm_id);
> + of_node_put(tdm_np);
> + return -EINVAL;
> + }
> + }
> +
> + for_each_available_child_of_node(np, tdm_np) {
> + ret = of_property_read_u32(tdm_np, "reg", &tdm_id);
> + if (ret) {
> + dev_err(tsa->dev, "%pOF: failed to read reg\n",
> tdm_np);
> + of_node_put(tdm_np);
> + return ret;
> + }
> +
> + tdm = &tsa->tdm[tdm_id];
> +
> + mode = "disabled";
> + ret = of_property_read_string(tdm_np, "fsl,diagnostic-
> mode", &mode);
> + if (ret && ret != -EINVAL) {
> + dev_err(tsa->dev, "%pOF: failed to read
> fsl,diagnostic-mode\n",
> + tdm_np);
> + of_node_put(tdm_np);
> + return ret;
> + }
> + if (!strcmp(mode, "disabled")) {
> + tdm->simode_tdm |=
> TSA_SIMODE_TDM_SDM_NORM;
> + } else if (!strcmp(mode, "echo")) {
> + tdm->simode_tdm |=
> TSA_SIMODE_TDM_SDM_ECHO;
> + } else if (!strcmp(mode, "internal-loopback")) {
> + tdm->simode_tdm |=
> TSA_SIMODE_TDM_SDM_INTL_LOOP;
> + } else if (!strcmp(mode, "control-loopback")) {
> + tdm->simode_tdm |=
> TSA_SIMODE_TDM_SDM_LOOP_CTRL;
> + } else {
> + dev_err(tsa->dev, "%pOF: Invalid fsl,diagnostic-
> mode (%s)\n",
> + tdm_np, mode);
> + of_node_put(tdm_np);
> + return -EINVAL;
> + }
> +
> + val = 0;
> + ret = of_property_read_u32(tdm_np, "fsl,rx-frame-sync-
> delay-bits",
> + &val);
> + if (ret && ret != -EINVAL) {
> + dev_err(tsa->dev,
> + "%pOF: failed to read fsl,rx-frame-sync-
> delay-bits\n",
> + tdm_np);
> + of_node_put(tdm_np);
> + return ret;
> + }
> + if (val > 3) {
> + dev_err(tsa->dev,
> + "%pOF: Invalid fsl,rx-frame-sync-delay-bits
> (%u)\n",
> + tdm_np, val);
> + of_node_put(tdm_np);
> + return -EINVAL;
> + }
> + tdm->simode_tdm |= TSA_SIMODE_TDM_RFSD(val);
> +
> + val = 0;
> + ret = of_property_read_u32(tdm_np, "fsl,tx-frame-sync-
> delay-bits",
> + &val);
> + if (ret && ret != -EINVAL) {
> + dev_err(tsa->dev,
> + "%pOF: failed to read fsl,tx-frame-sync-
> delay-bits\n",
> + tdm_np);
> + of_node_put(tdm_np);
> + return ret;
> + }
> + if (val > 3) {
> + dev_err(tsa->dev,
> + "%pOF: Invalid fsl,tx-frame-sync-delay-bits
> (%u)\n",
> + tdm_np, val);
> + of_node_put(tdm_np);
> + return -EINVAL;
> + }
> + tdm->simode_tdm |= TSA_SIMODE_TDM_TFSD(val);
> +
> + if (of_property_read_bool(tdm_np, "fsl,common-rxtx-pins"))
> + tdm->simode_tdm |= TSA_SIMODE_TDM_CRT;
> +
> + if (of_property_read_bool(tdm_np, "fsl,clock-falling-edge"))
> + tdm->simode_tdm |= TSA_SIMODE_TDM_CE;
> +
> + if (of_property_read_bool(tdm_np, "fsl,fsync-rising-edge"))
> + tdm->simode_tdm |= TSA_SIMODE_TDM_FE;
> +
> + if (of_property_read_bool(tdm_np, "fsl,double-speed-
> clock"))
> + tdm->simode_tdm |= TSA_SIMODE_TDM_DSC;
> +
> + clk = of_clk_get_by_name(tdm_np, "l1rsync");
> + if (IS_ERR(clk)) {
> + ret = PTR_ERR(clk);
> + of_node_put(tdm_np);
> + goto err;
> + }
> + ret = clk_prepare_enable(clk);
> + if (ret) {
> + clk_put(clk);
> + of_node_put(tdm_np);
> + goto err;
> + }
> + tdm->l1rsync_clk = clk;
> +
> + clk = of_clk_get_by_name(tdm_np, "l1rclk");
> + if (IS_ERR(clk)) {
> + ret = PTR_ERR(clk);
> + of_node_put(tdm_np);
> + goto err;
> + }
> + ret = clk_prepare_enable(clk);
> + if (ret) {
> + clk_put(clk);
> + of_node_put(tdm_np);
> + goto err;
> + }
> + tdm->l1rclk_clk = clk;
> +
> + if (!(tdm->simode_tdm & TSA_SIMODE_TDM_CRT)) {
> + clk = of_clk_get_by_name(tdm_np, "l1tsync");
> + if (IS_ERR(clk)) {
> + ret = PTR_ERR(clk);
> + of_node_put(tdm_np);
> + goto err;
> + }
> + ret = clk_prepare_enable(clk);
> + if (ret) {
> + clk_put(clk);
> + of_node_put(tdm_np);
> + goto err;
> + }
> + tdm->l1tsync_clk = clk;
> +
> + clk = of_clk_get_by_name(tdm_np, "l1tclk");
> + if (IS_ERR(clk)) {
> + ret = PTR_ERR(clk);
> + of_node_put(tdm_np);
> + goto err;
> + }
> + ret = clk_prepare_enable(clk);
> + if (ret) {
> + clk_put(clk);
> + of_node_put(tdm_np);
> + goto err;
> + }
> + tdm->l1tclk_clk = clk;
> + }
> +
> + ret = tsa_of_parse_tdm_rx_route(tsa, tdm_np, tsa->tdms,
> tdm_id);
> + if (ret) {
> + of_node_put(tdm_np);
> + goto err;
> + }
> +
> + ret = tsa_of_parse_tdm_tx_route(tsa, tdm_np, tsa->tdms,
> tdm_id);
> + if (ret) {
> + of_node_put(tdm_np);
> + goto err;
> + }
> +
> + tdm->is_enable = true;
> + }
> + return 0;
> +
> +err:
> + for (i = 0; i < 2; i++) {
> + if (tsa->tdm[i].l1rsync_clk) {
> + clk_disable_unprepare(tsa->tdm[i].l1rsync_clk);
> + clk_put(tsa->tdm[i].l1rsync_clk);
> + }
> + if (tsa->tdm[i].l1rclk_clk) {
> + clk_disable_unprepare(tsa->tdm[i].l1rclk_clk);
> + clk_put(tsa->tdm[i].l1rclk_clk);
> + }
> + if (tsa->tdm[i].l1tsync_clk) {
> + clk_disable_unprepare(tsa->tdm[i].l1rsync_clk);
> + clk_put(tsa->tdm[i].l1rsync_clk);
> + }
> + if (tsa->tdm[i].l1tclk_clk) {
> + clk_disable_unprepare(tsa->tdm[i].l1rclk_clk);
> + clk_put(tsa->tdm[i].l1rclk_clk);
> + }
> + }
> + return ret;
> +}
> +
> +static void tsa_init_si_ram(struct tsa *tsa)
> +{
> + resource_size_t i;
> +
> + /* Fill all entries as the last one */
> + for (i = 0; i < tsa->si_ram_sz; i += 4)
> + tsa_write32(tsa->si_ram + i, TSA_SIRAM_ENTRY_LAST);
> +}
> +
> +static int tsa_probe(struct platform_device *pdev)
> +{
> + struct device_node *np = pdev->dev.of_node;
> + struct resource *res;
> + struct tsa *tsa;
> + unsigned int i;
> + u32 val;
> + int ret;
> +
> + tsa = devm_kzalloc(&pdev->dev, sizeof(*tsa), GFP_KERNEL);
> + if (!tsa)
> + return -ENOMEM;
> +
> + tsa->dev = &pdev->dev;
> +
> + for (i = 0; i < ARRAY_SIZE(tsa->serials); i++)
> + tsa->serials[i].id = i;
> +
> + spin_lock_init(&tsa->lock);
> +
> + tsa->si_regs = devm_platform_ioremap_resource_byname(pdev,
> "si_regs");
> + if (IS_ERR(tsa->si_regs))
> + return PTR_ERR(tsa->si_regs);
> +
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> "si_ram");
> + if (!res) {
> + dev_err(tsa->dev, "si_ram resource missing\n");
> + return -EINVAL;
> + }
> + tsa->si_ram_sz = resource_size(res);
> + tsa->si_ram = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(tsa->si_ram))
> + return PTR_ERR(tsa->si_ram);
> +
> + tsa_init_si_ram(tsa);
> +
> + ret = tsa_of_parse_tdms(tsa, np);
> + if (ret)
> + return ret;
> +
> + /* Set SIMODE */
> + val = 0;
> + if (tsa->tdm[0].is_enable)
> + val |= TSA_SIMODE_TDMA(tsa->tdm[0].simode_tdm);
> + if (tsa->tdm[1].is_enable)
> + val |= TSA_SIMODE_TDMB(tsa->tdm[1].simode_tdm);
> +
> + tsa_clrsetbits32(tsa->si_regs + TSA_SIMODE,
> + TSA_SIMODE_TDMA(TSA_SIMODE_TDM_MASK) |
> + TSA_SIMODE_TDMB(TSA_SIMODE_TDM_MASK),
> + val);
> +
> + /* Set SIGMR */
> + val = (tsa->tdms == BIT(TSA_TDMA)) ?
> + TSA_SIGMR_RDM_STATIC_TDMA :
> TSA_SIGMR_RDM_STATIC_TDMAB;
> + if (tsa->tdms & BIT(TSA_TDMA))
> + val |= TSA_SIGMR_ENA;
> + if (tsa->tdms & BIT(TSA_TDMB))
> + val |= TSA_SIGMR_ENB;
> + tsa_write8(tsa->si_regs + TSA_SIGMR, val);
> +
> + platform_set_drvdata(pdev, tsa);
> +
> + return 0;
> +}
> +
> +static int tsa_remove(struct platform_device *pdev)
> +{
> + struct tsa *tsa = platform_get_drvdata(pdev);
> + int i;
> +
> + for (i = 0; i < 2; i++) {
> + if (tsa->tdm[i].l1rsync_clk) {
> + clk_disable_unprepare(tsa->tdm[i].l1rsync_clk);
> + clk_put(tsa->tdm[i].l1rsync_clk);
> + }
> + if (tsa->tdm[i].l1rclk_clk) {
> + clk_disable_unprepare(tsa->tdm[i].l1rclk_clk);
> + clk_put(tsa->tdm[i].l1rclk_clk);
> + }
> + if (tsa->tdm[i].l1tsync_clk) {
> + clk_disable_unprepare(tsa->tdm[i].l1rsync_clk);
> + clk_put(tsa->tdm[i].l1rsync_clk);
> + }
> + if (tsa->tdm[i].l1tclk_clk) {
> + clk_disable_unprepare(tsa->tdm[i].l1rclk_clk);
> + clk_put(tsa->tdm[i].l1rclk_clk);
> + }
> + }
> + return 0;
> +}
> +
> +static const struct of_device_id tsa_id_table[] = {
> + { .compatible = "fsl,cpm1-tsa" },
> + {} /* sentinel */
> +};
> +MODULE_DEVICE_TABLE(of, tsa_id_table);
> +
> +static struct platform_driver tsa_driver = {
> + .driver = {
> + .name = "fsl-tsa",
> + .of_match_table = of_match_ptr(tsa_id_table),
> + },
> + .probe = tsa_probe,
> + .remove = tsa_remove,
> +};
> +module_platform_driver(tsa_driver);
> +
> +struct tsa_serial *tsa_serial_get_byphandle(struct device_node *np,
> + const char *phandle_name)
> +{
> + struct of_phandle_args out_args;
> + struct platform_device *pdev;
> + struct tsa_serial *tsa_serial;
> + struct tsa *tsa;
> + int ret;
> +
> + ret = of_parse_phandle_with_fixed_args(np, phandle_name, 1, 0,
> &out_args);
> + if (ret < 0)
> + return ERR_PTR(ret);
> +
> + if (!of_match_node(tsa_driver.driver.of_match_table, out_args.np))
> {
> + of_node_put(out_args.np);
> + return ERR_PTR(-EINVAL);
> + }
> +
> + pdev = of_find_device_by_node(out_args.np);
> + of_node_put(out_args.np);
> + if (!pdev)
> + return ERR_PTR(-ENODEV);
> +
> + tsa = platform_get_drvdata(pdev);
> + if (!tsa) {
> + platform_device_put(pdev);
> + return ERR_PTR(-EPROBE_DEFER);
> + }
> +
> + if (out_args.args_count != 1) {
> + platform_device_put(pdev);
> + return ERR_PTR(-EINVAL);
> + }
> +
> + if (out_args.args[0] >= ARRAY_SIZE(tsa->serials)) {
> + platform_device_put(pdev);
> + return ERR_PTR(-EINVAL);
> + }
> +
> + tsa_serial = &tsa->serials[out_args.args[0]];
> +
> + /*
> + * Be sure that the serial id matches the phandle arg.
> + * The tsa_serials table is indexed by serial ids. The serial id is set
> + * during the probe() call and needs to be coherent.
> + */
> + if (WARN_ON(tsa_serial->id != out_args.args[0])) {
> + platform_device_put(pdev);
> + return ERR_PTR(-EINVAL);
> + }
> +
> + return tsa_serial;
> +}
> +EXPORT_SYMBOL(tsa_serial_get_byphandle);
> +
> +void tsa_serial_put(struct tsa_serial *tsa_serial)
> +{
> + struct tsa *tsa = tsa_serial_get_tsa(tsa_serial);
> +
> + put_device(tsa->dev);
> +}
> +EXPORT_SYMBOL(tsa_serial_put);
> +
> +static void devm_tsa_serial_release(struct device *dev, void *res)
> +{
> + struct tsa_serial **tsa_serial = res;
> +
> + tsa_serial_put(*tsa_serial);
> +}
> +
> +struct tsa_serial *devm_tsa_serial_get_byphandle(struct device *dev,
> + struct device_node *np,
> + const char *phandle_name)
> +{
> + struct tsa_serial *tsa_serial;
> + struct tsa_serial **dr;
> +
> + dr = devres_alloc(devm_tsa_serial_release, sizeof(*dr),
> GFP_KERNEL);
> + if (!dr)
> + return ERR_PTR(-ENOMEM);
> +
> + tsa_serial = tsa_serial_get_byphandle(np, phandle_name);
> + if (!IS_ERR(tsa_serial)) {
> + *dr = tsa_serial;
> + devres_add(dev, dr);
> + } else {
> + devres_free(dr);
> + }
> +
> + return tsa_serial;
> +}
> +EXPORT_SYMBOL(devm_tsa_serial_get_byphandle);
> +
> +MODULE_AUTHOR("Herve Codina <[email protected]>");
> +MODULE_DESCRIPTION("CPM TSA driver");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/soc/fsl/qe/tsa.h b/drivers/soc/fsl/qe/tsa.h
> new file mode 100644
> index 000000000000..d9df89b6da3e
> --- /dev/null
> +++ b/drivers/soc/fsl/qe/tsa.h
> @@ -0,0 +1,42 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * TSA management
> + *
> + * Copyright 2022 CS GROUP France
> + *
> + * Author: Herve Codina <[email protected]>
> + */
> +#ifndef __SOC_FSL_TSA_H__
> +#define __SOC_FSL_TSA_H__
> +
> +#include <linux/types.h>
> +
> +struct device_node;
> +struct device;
> +struct tsa_serial;
> +
> +struct tsa_serial *tsa_serial_get_byphandle(struct device_node *np,
> + const char *phandle_name);
> +void tsa_serial_put(struct tsa_serial *tsa_serial);
> +struct tsa_serial *devm_tsa_serial_get_byphandle(struct device *dev,
> + struct device_node *np,
> + const char *phandle_name);
> +
> +/* Connect and disconnect the TSA serial */
> +int tsa_serial_connect(struct tsa_serial *tsa_serial);
> +int tsa_serial_disconnect(struct tsa_serial *tsa_serial);
> +
> +/* Cell information */
> +struct tsa_serial_info {
> + unsigned long rx_fs_rate;
> + unsigned long rx_bit_rate;
> + u8 nb_rx_ts;
> + unsigned long tx_fs_rate;
> + unsigned long tx_bit_rate;
> + u8 nb_tx_ts;
> +};
> +
> +/* Get information */
> +int tsa_serial_get_info(struct tsa_serial *tsa_serial, struct tsa_serial_info
> *info);
> +
> +#endif /* __SOC_FSL_TSA_H__ */
> --
> 2.39.1
Herve Codina <[email protected]> writes:
> Hi,
>
> This series adds support for audio using the QMC controller available in
> some Freescale PowerQUICC SoCs.
Who's going to take this series?
By lines of code it's mostly in drivers/soc/fsl, so I was expecting it
would go via that tree.
Or is it a sound series that should go via one of the sound trees?
cheers
...
> .../soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 172 ++
> .../bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml | 234 +++
> .../bindings/sound/fsl,qmc-audio.yaml | 117 ++
> MAINTAINERS | 25 +
> arch/powerpc/platforms/8xx/cpm1.c | 2 +-
> drivers/soc/fsl/qe/Kconfig | 23 +
> drivers/soc/fsl/qe/Makefile | 2 +
> drivers/soc/fsl/qe/qmc.c | 1533 +++++++++++++++++
> drivers/soc/fsl/qe/tsa.c | 869 ++++++++++
> drivers/soc/fsl/qe/tsa.h | 42 +
> include/dt-bindings/soc/fsl,tsa.h | 13 +
> include/soc/fsl/qe/qmc.h | 71 +
> sound/soc/fsl/Kconfig | 9 +
> sound/soc/fsl/Makefile | 2 +
> sound/soc/fsl/fsl_qmc_audio.c | 735 ++++++++
> 15 files changed, 3848 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
> create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
> create mode 100644 Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
> create mode 100644 drivers/soc/fsl/qe/qmc.c
> create mode 100644 drivers/soc/fsl/qe/tsa.c
> create mode 100644 drivers/soc/fsl/qe/tsa.h
> create mode 100644 include/dt-bindings/soc/fsl,tsa.h
> create mode 100644 include/soc/fsl/qe/qmc.h
> create mode 100644 sound/soc/fsl/fsl_qmc_audio.c
Le 17/02/2023 à 00:52, Michael Ellerman a écrit :
> Herve Codina <[email protected]> writes:
>> Hi,
>>
>> This series adds support for audio using the QMC controller available in
>> some Freescale PowerQUICC SoCs.
>
> Who's going to take this series?
>
> By lines of code it's mostly in drivers/soc/fsl, so I was expecting it
> would go via that tree.
>
> Or is it a sound series that should go via one of the sound trees?
It is a sound series, I was expecting it to go via sound tree, that's
the reason why I asked and got an Acked-by: from fsl soc maintainers.
Mark, is that ok for you or do you expect this series to go via soc tree ?
Thanks
Christophe
>
> cheers
>
> ...
>> .../soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 172 ++
>> .../bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml | 234 +++
>> .../bindings/sound/fsl,qmc-audio.yaml | 117 ++
>> MAINTAINERS | 25 +
>> arch/powerpc/platforms/8xx/cpm1.c | 2 +-
>> drivers/soc/fsl/qe/Kconfig | 23 +
>> drivers/soc/fsl/qe/Makefile | 2 +
>> drivers/soc/fsl/qe/qmc.c | 1533 +++++++++++++++++
>> drivers/soc/fsl/qe/tsa.c | 869 ++++++++++
>> drivers/soc/fsl/qe/tsa.h | 42 +
>> include/dt-bindings/soc/fsl,tsa.h | 13 +
>> include/soc/fsl/qe/qmc.h | 71 +
>> sound/soc/fsl/Kconfig | 9 +
>> sound/soc/fsl/Makefile | 2 +
>> sound/soc/fsl/fsl_qmc_audio.c | 735 ++++++++
>> 15 files changed, 3848 insertions(+), 1 deletion(-)
>> create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
>> create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
>> create mode 100644 Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
>> create mode 100644 drivers/soc/fsl/qe/qmc.c
>> create mode 100644 drivers/soc/fsl/qe/tsa.c
>> create mode 100644 drivers/soc/fsl/qe/tsa.h
>> create mode 100644 include/dt-bindings/soc/fsl,tsa.h
>> create mode 100644 include/soc/fsl/qe/qmc.h
>> create mode 100644 sound/soc/fsl/fsl_qmc_audio.c
On 16/02/2023 14:42, Herve Codina wrote:
> Add support for the time slot assigner (TSA)
> available in some PowerQUICC SoC such as MPC885
> or MPC866.
>
> Signed-off-by: Herve Codina <[email protected]>
> ---
> .../bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml | 234 ++++++++++++++++++
> include/dt-bindings/soc/fsl,tsa.h | 13 +
> 2 files changed, 247 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
> create mode 100644 include/dt-bindings/soc/fsl,tsa.h
>
> diff --git a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
> new file mode 100644
> index 000000000000..bcd03f89780e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
> @@ -0,0 +1,234 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: PowerQUICC CPM Time-slot assigner (TSA) controller
> +
> +maintainers:
> + - Herve Codina <[email protected]>
> +
> +description:
> + The TSA is the time-slot assigner that can be found on some PowerQUICC SoC.
> + Its purpose is to route some TDM time-slots to other internal serial
> + controllers.
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - fsl,mpc885-tsa
> + - fsl,mpc866-tsa
> + - const: fsl,cpm1-tsa
> +
> + reg:
> + items:
> + - description: SI (Serial Interface) register base
> + - description: SI RAM base
> +
> + reg-names:
> + items:
> + - const: si_regs
> + - const: si_ram
> +
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + '#fsl,serial-cells':
> + $ref: /schemas/types.yaml#/definitions/uint32
> + const: 1
> + description:
> + TSA consumers that use a phandle to TSA need to pass the serial identifier
> + with this phandle (defined in dt-bindings/soc/fsl,tsa.h).
> + For instance "fsl,tsa-serial = <&tsa FSL_CPM_TSA_SCC4>;".
> +
> +patternProperties:
> + '^tdm@[0-1]$':
> + description:
> + The TDM managed by this controller
> + type: object
> +
> + additionalProperties: false
> +
> + properties:
> + reg:
> + minimum: 0
> + maximum: 1
> + description:
> + The TDM number for this TDM, 0 for TDMa and 1 for TDMb
> +
> + fsl,common-rxtx-pins:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The hardware can use four dedicated pins for Tx clock, Tx sync, Rx
> + clock and Rx sync or use only two pins, Tx/Rx clock and Tx/Rx sync.
> + Without the 'fsl,common-rxtx-pins' property, the four pins are used.
> + With the 'fsl,common-rxtx-pins' property, two pins are used.
> +
> + clocks:
> + minItems: 2
> + items:
> + - description: External clock connected to L1RSYNC pin
> + - description: External clock connected to L1RCLK pin
> + - description: External clock connected to L1TSYNC pin
> + - description: External clock connected to L1TCLK pin
Blank line
> + clock-names:
> + minItems: 2
> + items:
> + - const: l1rsync
> + - const: l1rclk
> + - const: l1tsync
> + - const: l1tclk
> +
> + fsl,diagnostic-mode:
> + $ref: /schemas/types.yaml#/definitions/string
> + enum: [disabled, echo, internal-loopback, control-loopback]
> + default: disabled
> + description: |
> + The diagnostic mode can be used to diagnose some communication issues.
> + It should not be set (or set to 'disabled') when diagnostic is not
> + needed.
I don't think this is property for DT. Are you going to ship devices to
customers with diagnostic mode? As you explained: no, so this can never
appear. You might need sysfs/debugfs knob.
You already got a comment for this. Your explanation "I plan" is not an
explanation why DT is suitable for such property. So let's make it more
obvious: drop it.
> + Diagnostic mode:
> + - disabled:
> + Diagnostic disabled (ie. normal operation)
> + - echo:
> + Automatic echo. Rx data is resent on Tx.
> + - internal-loopback:
> + The TDM transmitter is connected to the receiver. Data appears
> + on Tx pin.
> + - control-loopback:
> + The TDM transmitter is connected to the receiver. The Tx pin is
> + disconnected.
> +
> + fsl,rx-frame-sync-delay-bits:
> + enum: [0, 1, 2, 3]
maxItems: 1
> + default: 0
> + description: |
> + Receive frame sync delay in number of bits.
> + Indicates the delay between the Rx sync and the first bit of the Rx
> + frame. 0 for no bit delay. 1, 2 or 3 for 1, 2 or 3 bits delay.
> +
> + fsl,tx-frame-sync-delay-bits:
> + enum: [0, 1, 2, 3]
maxItems: 1
> + default: 0
> + description: |
> + Transmit frame sync delay in number of bits.
> + Indicates the delay between the Tx sync and the first bit of the Tx
> + frame. 0 for no bit delay. 1, 2 or 3 for 1, 2 or 3 bits delay.
> +
> + fsl,clock-falling-edge:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + Data is sent on falling edge of the clock (and received on the rising
> + edge). If 'clock-falling-edge' is not present, data is sent on the
> + rising edge (and received on the falling edge).
> +
> + fsl,fsync-rising-edge:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + Frame sync pulses are sampled with the rising edge of the channel
> + clock. If 'fsync-rising-edge' is not present, pulses are sampled with
> + the falling edge.
> +
> + fsl,double-speed-clock:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The channel clock is twice the data rate.
> +
> + patternProperties:
> + '^fsl,[rt]x-ts-routes$':
> + $ref: /schemas/types.yaml#/definitions/uint32-matrix
> + description: |
> + A list of tuple that indicates the Tx or Rx time-slots routes.
> + items:
> + items:
> + - description:
> + The number of time-slots
> + minimum: 1
> + maximum: 64
> + - description: |
> + The source (Tx) or destination (Rx) serial interface
> + (dt-bindings/soc/fsl,tsa.h defines these values)
> + - 0: No destination
> + - 1: SCC2
> + - 2: SCC3
> + - 3: SCC4
> + - 4: SMC1
> + - 5: SMC2
> + enum: [0, 1, 2, 3, 4, 5]
> + minItems: 1
> + maxItems: 64
> +
> + allOf:
> + # If fsl,common-rxtx-pins is present, only 2 clocks are needed.
> + # Else, the 4 clocks must be present.
> + - if:
> + required:
> + - fsl,common-rxtx-pins
> + then:
> + properties:
> + clocks:
> + maxItems: 2
> + clock-names:
> + maxItems: 2
> + else:
> + properties:
> + clocks:
> + minItems: 4
> + clock-names:
> + minItems: 4
> +
> + required:
> + - reg
> + - clocks
> + - clock-names
> +
> +required:
> + - compatible
> + - reg
> + - reg-names
> + - '#address-cells'
> + - '#size-cells'
> + - '#fsl,serial-cells'
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/soc/fsl,tsa.h>
> +
> + tsa@ae0 {
> + compatible = "fsl,mpc885-tsa", "fsl,cpm1-tsa";
> + reg = <0xae0 0x10>,
> + <0xc00 0x200>;
> + reg-names = "si_regs", "si_ram";
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> + #fsl,serial-cells = <1>;
> +
> + tdm@0 {
> + /* TDMa */
> + reg = <0>;
> +
> + clocks = <&clk_l1rsynca>, <&clk_l1rclka>;
> + clock-names = "l1rsync", "l1rclk";
> +
> + fsl,common-rxtx-pins;
> + fsl,fsync-rising-edge;
> +
> + fsl,tx-ts-routes = < 2 0 >, /* TS 0..1 */
No spaces after < and before >
> + < 24 FSL_CPM_TSA_SCC4 >, /* TS 2..25 */
> + < 1 0 >, /* TS 26 */
> + < 5 FSL_CPM_TSA_SCC3 >; /* TS 27..31 */
> +
> + fsl,rx-ts-routes = < 2 0 >, /* TS 0..1 */
> + < 24 FSL_CPM_TSA_SCC4 >, /* 2..25 */
> + < 1 0 >, /* TS 26 */
> + < 5 FSL_CPM_TSA_SCC3 >; /* TS 27..31 */
> + };
> + };
> diff --git a/include/dt-bindings/soc/fsl,tsa.h b/include/dt-bindings/soc/fsl,tsa.h
> new file mode 100644
> index 000000000000..2cc44e867dbe
> --- /dev/null
> +++ b/include/dt-bindings/soc/fsl,tsa.h
Use same name as binding file.
> @@ -0,0 +1,13 @@
> +/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
> +
> +#ifndef __DT_BINDINGS_SOC_FSL_TSA_H
> +#define __DT_BINDINGS_SOC_FSL_TSA_H
Best regards,
Krzysztof
On 16/02/2023 14:42, Herve Codina wrote:
> Add support for the QMC (QUICC Multichannel Controller)
> available in some PowerQUICC SoC such as MPC885 or MPC866.
>
> Signed-off-by: Herve Codina <[email protected]>
> ---
> .../soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 172 ++++++++++++++++++
> 1 file changed, 172 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Best regards,
Krzysztof
Hi Krzysztof,
On Fri, 17 Feb 2023 10:14:48 +0100
Krzysztof Kozlowski <[email protected]> wrote:
> On 16/02/2023 14:42, Herve Codina wrote:
> > Add support for the time slot assigner (TSA)
> > available in some PowerQUICC SoC such as MPC885
> > or MPC866.
> >
> > Signed-off-by: Herve Codina <[email protected]>
> > ---
> > .../bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml | 234 ++++++++++++++++++
> > include/dt-bindings/soc/fsl,tsa.h | 13 +
> > 2 files changed, 247 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
> > create mode 100644 include/dt-bindings/soc/fsl,tsa.h
[...]
> > +
> > +patternProperties:
> > + '^tdm@[0-1]$':
> > + description:
> > + The TDM managed by this controller
> > + type: object
> > +
> > + additionalProperties: false
> > +
> > + properties:
> > + reg:
> > + minimum: 0
> > + maximum: 1
> > + description:
> > + The TDM number for this TDM, 0 for TDMa and 1 for TDMb
[...]
> > +
> > + fsl,rx-frame-sync-delay-bits:
> > + enum: [0, 1, 2, 3]
>
> maxItems: 1
The property is an enum
Why this maxItems value ?
If I add the maxItems value, I've got some dt_binding_check errors:
/xxxx/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml:
patternProperties:^tdm@[0-1]$:properties:fsl,rx-frame-sync-delay-bits:
'enum' should not be valid under {'enum': ['const', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'minimum', 'maximum', 'multipleOf', 'pattern']}
hint: Scalar and array keywords cannot be mixed
from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
>
> > + default: 0
> > + description: |
> > + Receive frame sync delay in number of bits.
> > + Indicates the delay between the Rx sync and the first bit of the Rx
> > + frame. 0 for no bit delay. 1, 2 or 3 for 1, 2 or 3 bits delay.
> > +
> > + fsl,tx-frame-sync-delay-bits:
> > + enum: [0, 1, 2, 3]
>
> maxItems: 1
Same question here.
Thanks for the review,
Hervé
--
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
On 17/02/2023 14:50, Herve Codina wrote:
> Hi Krzysztof,
>
> On Fri, 17 Feb 2023 10:14:48 +0100
> Krzysztof Kozlowski <[email protected]> wrote:
>
>> On 16/02/2023 14:42, Herve Codina wrote:
>>> Add support for the time slot assigner (TSA)
>>> available in some PowerQUICC SoC such as MPC885
>>> or MPC866.
>>>
>>> Signed-off-by: Herve Codina <[email protected]>
>>> ---
>>> .../bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml | 234 ++++++++++++++++++
>>> include/dt-bindings/soc/fsl,tsa.h | 13 +
>>> 2 files changed, 247 insertions(+)
>>> create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml
>>> create mode 100644 include/dt-bindings/soc/fsl,tsa.h
>
> [...]
>>> +
>>> +patternProperties:
>>> + '^tdm@[0-1]$':
>>> + description:
>>> + The TDM managed by this controller
>>> + type: object
>>> +
>>> + additionalProperties: false
>>> +
>>> + properties:
>>> + reg:
>>> + minimum: 0
>>> + maximum: 1
>>> + description:
>>> + The TDM number for this TDM, 0 for TDMa and 1 for TDMb
> [...]
>>> +
>>> + fsl,rx-frame-sync-delay-bits:
>>> + enum: [0, 1, 2, 3]
>>
>> maxItems: 1
>
> The property is an enum
> Why this maxItems value ?
Hm, it's an array, but you are right that enum forces dtschema to
interpret it as scalar value, so your code is correct.
>
> If I add the maxItems value, I've got some dt_binding_check errors:
> /xxxx/bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml:
> patternProperties:^tdm@[0-1]$:properties:fsl,rx-frame-sync-delay-bits:
> 'enum' should not be valid under {'enum': ['const', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'minimum', 'maximum', 'multipleOf', 'pattern']}
> hint: Scalar and array keywords cannot be mixed
> from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
Best regards,
Krzysztof
On Fri, Feb 17, 2023 at 06:32:03AM +0000, Christophe Leroy wrote:
> Mark, is that ok for you or do you expect this series to go via soc tree ?
Sure, that sounds good to me. I'll give it another check and
then assuming everything is fine apply for -rc1.
On Fri, 17 Feb 2023 19:15:22 +0000
Mark Brown <[email protected]> wrote:
> On Fri, Feb 17, 2023 at 06:32:03AM +0000, Christophe Leroy wrote:
>
> > Mark, is that ok for you or do you expect this series to go via soc tree ?
>
> Sure, that sounds good to me. I'll give it another check and
> then assuming everything is fine apply for -rc1.
Thanks a lot,
Hervé
--
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
On Fri, 17 Feb 2023 21:18:20 +0100
Herve Codina <[email protected]> wrote:
> On Fri, 17 Feb 2023 19:15:22 +0000
> Mark Brown <[email protected]> wrote:
>
> > On Fri, Feb 17, 2023 at 06:32:03AM +0000, Christophe Leroy wrote:
> >
> > > Mark, is that ok for you or do you expect this series to go via soc tree ?
> >
> > Sure, that sounds good to me. I'll give it another check and
> > then assuming everything is fine apply for -rc1.
>
> Thanks a lot,
> Hervé
>
And note that the v6 series is available.
https://lore.kernel.org/linux-kernel/[email protected]/
with the v5 feedbacks from Krzysztof taken into account.
Hervé
--
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com