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From:   Keith Zhao <keith.zhao@starfivetech.com>
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        "Heiko Stuebner" <heiko@sntech.de>,
        Shawn Guo <shawnguo@kernel.org>, Jagan Teki <jagan@edgeble.ai>,
        Chris Morgan <macromorgan@hotmail.com>,
        Keith Zhao <keith.zhao@starfivetech.com>,
        Jack Zhu <jack.zhu@starfivetech.com>,
        Shengyang Chen <shengyang.chen@starfivetech.com>,
        Changhuang Liang <changhuang.liang@starfivetech.com>
Subject: [PATCH 9/9] drm/verisilicon: Add starfive hdmi driver
Date:   Fri, 2 Jun 2023 15:40:43 +0800
Message-ID: <20230602074043.33872-10-keith.zhao@starfivetech.com>
In-Reply-To: <20230602074043.33872-1-keith.zhao@starfivetech.com>
References: <20230602074043.33872-1-keith.zhao@starfivetech.com>
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Precedence: bulk

Add HDMI dirver for StarFive SoC JH7110.

Signed-off-by: Keith Zhao <keith.zhao@starfivetech.com>
---
 drivers/gpu/drm/verisilicon/Kconfig         |  11 +
 drivers/gpu/drm/verisilicon/Makefile        |   1 +
 drivers/gpu/drm/verisilicon/starfive_hdmi.c | 928 ++++++++++++++++++++
 drivers/gpu/drm/verisilicon/starfive_hdmi.h | 296 +++++++
 drivers/gpu/drm/verisilicon/vs_drv.c        |   6 +
 drivers/gpu/drm/verisilicon/vs_drv.h        |   4 +
 6 files changed, 1246 insertions(+)
 create mode 100644 drivers/gpu/drm/verisilicon/starfive_hdmi.c
 create mode 100644 drivers/gpu/drm/verisilicon/starfive_hdmi.h

diff --git a/drivers/gpu/drm/verisilicon/Kconfig b/drivers/gpu/drm/verisilicon/Kconfig
index 89d12185f73b..35e85ac41b10 100644
--- a/drivers/gpu/drm/verisilicon/Kconfig
+++ b/drivers/gpu/drm/verisilicon/Kconfig
@@ -11,3 +11,14 @@ config DRM_VERISILICON
 	  This driver provides VeriSilicon kernel mode
 	  setting and buffer management. It does not
 	  provide 2D or 3D acceleration.
+
+config STARFIVE_HDMI
+	bool "Starfive specific extensions HDMI"
+	help
+	   This selects support for StarFive SoC specific extensions
+	   for the Innosilicon HDMI driver. If you want to enable
+	   HDMI on JH7110 based SoC, you should select this option.
+
+	   To compile this driver as a module, choose M here.
+
+
diff --git a/drivers/gpu/drm/verisilicon/Makefile b/drivers/gpu/drm/verisilicon/Makefile
index 0ed25b5e3062..ebe2c94f529a 100644
--- a/drivers/gpu/drm/verisilicon/Makefile
+++ b/drivers/gpu/drm/verisilicon/Makefile
@@ -8,5 +8,6 @@ vs_drm-objs := vs_dc_hw.o \
 		vs_gem.o \
 		vs_plane.o
 
+vs_drm-$(CONFIG_STARFIVE_HDMI) += starfive_hdmi.o
 obj-$(CONFIG_DRM_VERISILICON) += vs_drm.o
 
diff --git a/drivers/gpu/drm/verisilicon/starfive_hdmi.c b/drivers/gpu/drm/verisilicon/starfive_hdmi.c
new file mode 100644
index 000000000000..128ecca03309
--- /dev/null
+++ b/drivers/gpu/drm/verisilicon/starfive_hdmi.c
@@ -0,0 +1,928 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 StarFive Technology Co., Ltd.
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/hdmi.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+
+#include <drm/bridge/dw_hdmi.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#include "starfive_hdmi.h"
+#include "vs_drv.h"
+
+static struct starfive_hdmi *encoder_to_hdmi(struct drm_encoder *encoder)
+{
+	return container_of(encoder, struct starfive_hdmi, encoder);
+}
+
+static struct starfive_hdmi *connector_to_hdmi(struct drm_connector *connector)
+{
+	return container_of(connector, struct starfive_hdmi, connector);
+}
+
+struct starfive_hdmi_i2c {
+	struct i2c_adapter adap;
+
+	u8 ddc_addr;
+	u8 segment_addr;
+	/* protects the edid data when use i2c cmd to read edid */
+	struct mutex lock;
+	struct completion cmp;
+};
+
+static const struct pre_pll_config pre_pll_cfg_table[] = {
+	{ 25175000,  25175000, 1,  100, 2, 3, 3, 12, 3, 3, 4, 0, 0xf55555},
+	{ 25200000,  25200000, 1,  100, 2, 3, 3, 12, 3, 3, 4, 0, 0},
+	{ 27000000,  27000000, 1,  90, 3, 2, 2, 10, 3, 3, 4, 0, 0},
+	{ 27027000,  27027000, 1,  90, 3, 2, 2, 10, 3, 3, 4, 0, 0x170a3d},
+	{ 28320000,  28320000, 1,  28, 2, 1, 1,  3, 0, 3, 4, 0, 0x51eb85},
+	{ 30240000,  30240000, 1,  30, 2, 1, 1,  3, 0, 3, 4, 0, 0x3d70a3},
+	{ 31500000,  31500000, 1,  31, 2, 1, 1,  3, 0, 3, 4, 0, 0x7fffff},
+	{ 33750000,  33750000, 1,  33, 2, 1, 1,  3, 0, 3, 4, 0, 0xcfffff},
+	{ 36000000,  36000000, 1,  36, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{ 40000000,  40000000, 1,  80, 2, 2, 2, 12, 2, 2, 2, 0, 0},
+	{ 46970000,  46970000, 1,  46, 2, 1, 1,  3, 0, 3, 4, 0, 0xf851eb},
+	{ 49500000,  49500000, 1,  49, 2, 1, 1,  3, 0, 3, 4, 0, 0x7fffff},
+	{ 49000000,  49000000, 1,  49, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{ 50000000,  50000000, 1,  50, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{ 54000000,  54000000, 1,  54, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{ 54054000,  54054000, 1,  54, 2, 1, 1,  3, 0, 3, 4, 0, 0x0dd2f1},
+	{ 57284000,  57284000, 1,  57, 2, 1, 1,  3, 0, 3, 4, 0, 0x48b439},
+	{ 58230000,  58230000, 1,  58, 2, 1, 1,  3, 0, 3, 4, 0, 0x3ae147},
+	{ 59341000,  59341000, 1,  59, 2, 1, 1,  3, 0, 3, 4, 0, 0x574bc6},
+	{ 59400000,  59400000, 1,  99, 3, 1, 1,  1, 3, 3, 4, 0, 0},
+	{ 65000000,  65000000, 1, 130, 2, 2, 2,  12, 0, 2, 2, 0, 0},
+	{ 68250000,  68250000, 1, 68,  2, 1, 1,  3,  0, 3, 4, 0, 0x3fffff},
+	{ 71000000,  71000000, 1,  71, 2, 1, 1,  3, 0, 3,  4, 0, 0},
+	{ 74176000,  74176000, 1,  98, 1, 2, 2,  1, 2, 3, 4, 0, 0xe6ae6b},
+	{ 74250000,  74250000, 1,  99, 1, 2, 2,  1, 2, 3, 4, 0, 0},
+	{ 75000000,  75000000, 1,  75, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{ 78750000,  78750000, 1,  78, 2, 1, 1,  3, 0, 3, 4, 0, 0xcfffff},
+	{ 79500000,  79500000, 1,  79, 2, 1, 1,  3, 0, 3, 4, 0, 0x7fffff},
+	{ 83500000,  83500000, 2, 167, 2, 1, 1,  1, 0, 0,  6, 0, 0},
+	{ 83500000, 104375000, 1, 104, 2, 1, 1,  1, 1, 0,  5, 0, 0x600000},
+	{ 84858000,  84858000, 1,  85, 2, 1, 1,  3, 0, 3,  4, 0, 0xdba5e2},
+	{ 85500000,  85500000, 1,  85, 2, 1, 1,  3, 0, 3,  4, 0, 0x7fffff},
+	{ 85750000,  85750000, 1,  85, 2, 1, 1,  3, 0, 3,  4, 0, 0xcfffff},
+	{ 85800000,  85800000, 1,  85, 2, 1, 1,  3, 0, 3,  4, 0, 0xcccccc},
+	{ 88750000,  88750000, 1,  88, 2, 1, 1,  3, 0, 3,  4, 0, 0xcfffff},
+	{ 89910000,  89910000, 1,  89, 2, 1, 1,  3, 0, 3, 4, 0, 0xe8f5c1},
+	{ 90000000,  90000000, 1,  90, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{101000000, 101000000, 1, 101, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{102250000, 102250000, 1, 102, 2, 1, 1,  3, 0, 3, 4, 0, 0x3fffff},
+	{106500000, 106500000, 1, 106, 2, 1, 1,  3, 0, 3, 4, 0, 0x7fffff},
+	{108000000, 108000000, 1,  90, 3, 0, 0,  5, 0, 2,  2, 0, 0},
+	{119000000, 119000000, 1, 119, 2, 1, 1,  3, 0, 3,  4, 0, 0},
+	{131481000, 131481000, 1,  131, 2, 1, 1,  3, 0, 3,  4, 0, 0x7b22d1},
+	{135000000, 135000000, 1,  135, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{136750000, 136750000, 1,  136, 2, 1, 1,  3, 0, 3, 4, 0, 0xcfffff},
+	{147180000, 147180000, 1,  147, 2, 1, 1,  3, 0, 3, 4, 0, 0x2e147a},
+	{148352000, 148352000, 1,  98, 1, 1, 1,  1, 2, 2, 2, 0, 0xe6ae6b},
+	{148500000, 148500000, 1,  99, 1, 1, 1,  1, 2, 2, 2, 0, 0},
+	{154000000, 154000000, 1, 154, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{156000000, 156000000, 1, 156, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{157000000, 157000000, 1, 157, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{162000000, 162000000, 1, 162, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{174250000, 174250000, 1, 145, 3, 0, 0,  5, 0, 2, 2, 0, 0x355555},
+	{174500000, 174500000, 1, 174, 2, 1, 1,  3, 0, 3, 4, 0, 0x7fffff},
+	{174570000, 174570000, 1, 174, 2, 1, 1,  3, 0, 3, 4, 0, 0x91eb84},
+	{175500000, 175500000, 1, 175, 2, 1, 1,  3, 0, 3, 4, 0, 0x7fffff},
+	{185590000, 185590000, 1, 185, 2, 1, 1,  3, 0, 3, 4, 0, 0x970a3c},
+	{187000000, 187000000, 1, 187, 2, 1, 1,  3, 0, 3, 4, 0, 0},
+	{241500000, 241500000, 1, 161, 1, 1, 1,  4, 0, 2,  2, 0, 0},
+	{241700000, 241700000, 1, 241, 2, 1, 1,  3, 0, 3,  4, 0, 0xb33332},
+	{262750000, 262750000, 1, 262, 2, 1, 1,  3, 0, 3,  4, 0, 0xcfffff},
+	{296500000, 296500000, 1, 296, 2, 1, 1,  3, 0, 3,  4, 0, 0x7fffff},
+	{296703000, 296703000, 1,  98, 0, 1, 1,  1, 0, 2,  2, 0, 0xe6ae6b},
+	{297000000, 297000000, 1,  99, 0, 1, 1,  1, 0, 2,  2, 0, 0},
+	{594000000, 594000000, 1,  99, 0, 2, 0,  1, 0, 1,  1, 0, 0},
+	{0, 0, 0,  0, 0, 0, 0,  0, 0, 0,  0, 0, 0},
+};
+
+static const struct post_pll_config post_pll_cfg_table[] = {
+	{25200000,	1, 80, 13, 3, 1},
+	{27000000,	1, 40, 11, 3, 1},
+	{33750000,	1, 40, 11, 3, 1},
+	{49000000,	1, 20, 1, 3, 3},
+	{241700000, 1, 20, 1, 3, 3},
+	{297000000, 4, 20, 0, 0, 3},
+	{594000000, 4, 20, 0, 0, 0},
+	{ /* sentinel */ }
+};
+
+inline u8 hdmi_readb(struct starfive_hdmi *hdmi, u16 offset)
+{
+	return readl_relaxed(hdmi->regs + (offset) * 0x04);
+}
+
+inline void hdmi_writeb(struct starfive_hdmi *hdmi, u16 offset, u32 val)
+{
+	writel_relaxed(val, hdmi->regs + (offset) * 0x04);
+}
+
+inline void hdmi_modb(struct starfive_hdmi *hdmi, u16 offset,
+			     u32 msk, u32 val)
+{
+	u8 temp = hdmi_readb(hdmi, offset) & ~msk;
+
+	temp |= val & msk;
+	hdmi_writeb(hdmi, offset, temp);
+}
+
+static int starfive_hdmi_enable_clk_deassert_rst(struct device *dev, struct starfive_hdmi *hdmi)
+{
+	int ret;
+
+	ret = clk_prepare_enable(hdmi->sys_clk);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "Cannot enable HDMI sys clock: %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(hdmi->mclk);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "Cannot enable HDMI mclk clock: %d\n", ret);
+		return ret;
+	}
+	ret = clk_prepare_enable(hdmi->bclk);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "Cannot enable HDMI bclk clock: %d\n", ret);
+		return ret;
+	}
+	ret = reset_control_deassert(hdmi->tx_rst);
+	if (ret < 0) {
+		dev_err(dev, "failed to deassert tx_rst\n");
+		return ret;
+	}
+	return 0;
+}
+
+static void starfive_hdmi_disable_clk_assert_rst(struct device *dev, struct starfive_hdmi *hdmi)
+{
+	int ret;
+
+	ret = reset_control_assert(hdmi->tx_rst);
+	if (ret < 0)
+		dev_err(dev, "failed to assert tx_rst\n");
+
+	clk_disable_unprepare(hdmi->sys_clk);
+	clk_disable_unprepare(hdmi->mclk);
+	clk_disable_unprepare(hdmi->bclk);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int hdmi_system_pm_suspend(struct device *dev)
+{
+	return pm_runtime_force_suspend(dev);
+}
+
+static int hdmi_system_pm_resume(struct device *dev)
+{
+	return pm_runtime_force_resume(dev);
+}
+#endif
+
+#ifdef CONFIG_PM
+static int hdmi_runtime_suspend(struct device *dev)
+{
+	struct starfive_hdmi *hdmi = dev_get_drvdata(dev);
+
+	starfive_hdmi_disable_clk_assert_rst(dev, hdmi);
+
+	return 0;
+}
+
+static int hdmi_runtime_resume(struct device *dev)
+{
+	struct starfive_hdmi *hdmi = dev_get_drvdata(dev);
+
+	return starfive_hdmi_enable_clk_deassert_rst(dev, hdmi);
+}
+#endif
+
+static void starfive_hdmi_tx_phy_power_down(struct starfive_hdmi *hdmi)
+{
+	hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_OFF);
+}
+
+static void starfive_hdmi_tx_phy_power_on(struct starfive_hdmi *hdmi)
+{
+	hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_ON);
+}
+
+static void starfive_hdmi_config_pll(struct starfive_hdmi *hdmi)
+{
+	u32 val;
+	u8 reg_1ad_value = hdmi->post_cfg->post_div_en ?
+		 hdmi->post_cfg->postdiv : 0x00;
+	u8 reg_1aa_value = hdmi->post_cfg->post_div_en ?
+		 0x0e : 0x02;
+
+	hdmi_writeb(hdmi, STARFIVE_PRE_PLL_CONTROL, STARFIVE_PRE_PLL_POWER_DOWN);
+	hdmi_writeb(hdmi, STARFIVE_POST_PLL_DIV_1,
+		    STARFIVE_POST_PLL_POST_DIV_ENABLE |
+		    STARFIVE_POST_PLL_REFCLK_SEL_TMDS |
+		    STARFIVE_POST_PLL_POWER_DOWN);
+	hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_1, STARFIVE_PRE_PLL_PRE_DIV(hdmi->pre_cfg->prediv));
+
+	val = STARFIVE_SPREAD_SPECTRUM_MOD_DISABLE | STARFIVE_SPREAD_SPECTRUM_MOD_DOWN;
+	if (!hdmi->pre_cfg->fracdiv)
+		val |= STARFIVE_PRE_PLL_FRAC_DIV_DISABLE;
+	hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_2,
+		    STARFIVE_PRE_PLL_FB_DIV_11_8(hdmi->pre_cfg->fbdiv) | val);
+	hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_3,
+		    STARFIVE_PRE_PLL_FB_DIV_7_0(hdmi->pre_cfg->fbdiv));
+	hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_4,
+		    STARFIVE_PRE_PLL_TMDSCLK_DIV_C(hdmi->pre_cfg->tmds_div_c) |
+		    STARFIVE_PRE_PLL_TMDSCLK_DIV_A(hdmi->pre_cfg->tmds_div_a) |
+		    STARFIVE_PRE_PLL_TMDSCLK_DIV_B(hdmi->pre_cfg->tmds_div_b));
+
+	if (hdmi->pre_cfg->fracdiv) {
+		hdmi_writeb(hdmi, STARFIVE_PRE_PLL_FRAC_DIV_L,
+			    STARFIVE_PRE_PLL_FRAC_DIV_7_0(hdmi->pre_cfg->fracdiv));
+		hdmi_writeb(hdmi, STARFIVE_PRE_PLL_FRAC_DIV_M,
+			    STARFIVE_PRE_PLL_FRAC_DIV_15_8(hdmi->pre_cfg->fracdiv));
+		hdmi_writeb(hdmi, STARFIVE_PRE_PLL_FRAC_DIV_H,
+			    STARFIVE_PRE_PLL_FRAC_DIV_23_16(hdmi->pre_cfg->fracdiv));
+	}
+
+	hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_5,
+		    STARFIVE_PRE_PLL_PCLK_DIV_A(hdmi->pre_cfg->pclk_div_a) |
+		    STARFIVE_PRE_PLL_PCLK_DIV_B(hdmi->pre_cfg->pclk_div_b));
+	hdmi_writeb(hdmi, STARFIVE_PRE_PLL_DIV_6,
+		    STARFIVE_PRE_PLL_PCLK_DIV_C(hdmi->pre_cfg->pclk_div_c) |
+		    STARFIVE_PRE_PLL_PCLK_DIV_D(hdmi->pre_cfg->pclk_div_d));
+
+	/*pre-pll power down*/
+	hdmi_modb(hdmi, STARFIVE_PRE_PLL_CONTROL, STARFIVE_PRE_PLL_POWER_DOWN, 0);
+
+	hdmi_modb(hdmi, STARFIVE_POST_PLL_DIV_2, STARFIVE_POST_PLL_Pre_DIV_MASK,
+		  STARFIVE_POST_PLL_PRE_DIV(hdmi->post_cfg->prediv));
+	hdmi_writeb(hdmi, STARFIVE_POST_PLL_DIV_3, hdmi->post_cfg->fbdiv & 0xff);
+	hdmi_writeb(hdmi, STARFIVE_POST_PLL_DIV_4, reg_1ad_value);
+	hdmi_writeb(hdmi, STARFIVE_POST_PLL_DIV_1, reg_1aa_value);
+}
+
+static void starfive_hdmi_tmds_driver_on(struct starfive_hdmi *hdmi)
+{
+	hdmi_modb(hdmi, STARFIVE_TMDS_CONTROL,
+		  STARFIVE_TMDS_DRIVER_ENABLE, STARFIVE_TMDS_DRIVER_ENABLE);
+}
+
+static void starfive_hdmi_sync_tmds(struct starfive_hdmi *hdmi)
+{
+	/*first send 0 to this bit, then send 1 and keep 1 into this bit*/
+	hdmi_writeb(hdmi, HDMI_SYNC, 0x0);
+	hdmi_writeb(hdmi, HDMI_SYNC, 0x1);
+}
+
+static void starfive_hdmi_i2c_init(struct starfive_hdmi *hdmi)
+{
+	int ddc_bus_freq;
+
+	ddc_bus_freq = (hdmi->tmds_rate >> 2) / HDMI_SCL_RATE;
+
+	hdmi_writeb(hdmi, DDC_BUS_FREQ_L, ddc_bus_freq & 0xFF);
+	hdmi_writeb(hdmi, DDC_BUS_FREQ_H, (ddc_bus_freq >> 8) & 0xFF);
+
+	/* Clear the EDID interrupt flag and mute the interrupt */
+	hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0);
+	hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
+}
+
+static const
+struct pre_pll_config *starfive_hdmi_phy_get_pre_pll_cfg(struct starfive_hdmi *hdmi,
+							 unsigned long rate)
+{
+	const struct pre_pll_config *cfg = pre_pll_cfg_table;
+
+	rate = (rate / 1000) * 1000;
+	for (; cfg->pixclock != 0; cfg++)
+		if (cfg->tmdsclock == rate && cfg->pixclock == rate)
+			break;
+
+	if (cfg->pixclock == 0)
+		return ERR_PTR(-EINVAL);
+
+	return cfg;
+}
+
+static int starfive_hdmi_phy_clk_set_rate(struct starfive_hdmi *hdmi)
+{
+	hdmi->post_cfg = post_pll_cfg_table;
+
+	hdmi->pre_cfg = starfive_hdmi_phy_get_pre_pll_cfg(hdmi, hdmi->tmds_rate);
+	if (IS_ERR(hdmi->pre_cfg))
+		return PTR_ERR(hdmi->pre_cfg);
+
+	for (; hdmi->post_cfg->tmdsclock != 0; hdmi->post_cfg++)
+		if (hdmi->tmds_rate <= hdmi->post_cfg->tmdsclock)
+			break;
+
+	starfive_hdmi_config_pll(hdmi);
+
+	return 0;
+}
+
+static int starfive_hdmi_config_video_timing(struct starfive_hdmi *hdmi,
+					     struct drm_display_mode *mode)
+{
+	int value;
+	/* Set detail external video timing */
+	value = mode->htotal;
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_L, value & 0xFF);
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_H, (value >> 8) & 0xFF);
+
+	value = mode->htotal - mode->hdisplay;
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_L, value & 0xFF);
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_H, (value >> 8) & 0xFF);
+
+	value = mode->htotal - mode->hsync_start;
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_L, value & 0xFF);
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_H, (value >> 8) & 0xFF);
+
+	value = mode->hsync_end - mode->hsync_start;
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_L, value & 0xFF);
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_H, (value >> 8) & 0xFF);
+
+	value = mode->vtotal;
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_L, value & 0xFF);
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_H, (value >> 8) & 0xFF);
+
+	value = mode->vtotal - mode->vdisplay;
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VBLANK, value & 0xFF);
+
+	value = mode->vtotal - mode->vsync_start;
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDELAY, value & 0xFF);
+
+	value = mode->vsync_end - mode->vsync_start;
+	hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDURATION, value & 0xFF);
+
+	/* Set detail external video timing polarity and interlace mode */
+	value = v_EXTERANL_VIDEO(1);
+	value |= mode->flags & DRM_MODE_FLAG_PHSYNC ?
+		v_HSYNC_POLARITY(1) : v_HSYNC_POLARITY(0);
+	value |= mode->flags & DRM_MODE_FLAG_PVSYNC ?
+		v_VSYNC_POLARITY(1) : v_VSYNC_POLARITY(0);
+	value |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
+		v_INETLACE(1) : v_INETLACE(0);
+
+	hdmi_writeb(hdmi, HDMI_VIDEO_TIMING_CTL, value);
+	return 0;
+}
+
+static int starfive_hdmi_setup(struct starfive_hdmi *hdmi,
+			       struct drm_display_mode *mode)
+{
+	hdmi_modb(hdmi, STARFIVE_BIAS_CONTROL, STARFIVE_BIAS_ENABLE, STARFIVE_BIAS_ENABLE);
+	hdmi_writeb(hdmi, STARFIVE_RX_CONTROL, STARFIVE_RX_ENABLE);
+	hdmi->hdmi_data.vic = drm_match_cea_mode(mode);
+
+	hdmi->tmds_rate = mode->clock * 1000;
+	starfive_hdmi_phy_clk_set_rate(hdmi);
+
+	while (!(hdmi_readb(hdmi, STARFIVE_PRE_PLL_LOCK_STATUS) & 0x1))
+		continue;
+	while (!(hdmi_readb(hdmi, STARFIVE_POST_PLL_LOCK_STATUS) & 0x1))
+		continue;
+
+	/*turn on LDO*/
+	hdmi_writeb(hdmi, STARFIVE_LDO_CONTROL, STARFIVE_LDO_ENABLE);
+	/*turn on serializer*/
+	hdmi_writeb(hdmi, STARFIVE_SERIALIER_CONTROL, STARFIVE_SERIALIER_ENABLE);
+
+	starfive_hdmi_tx_phy_power_down(hdmi);
+	starfive_hdmi_config_video_timing(hdmi, mode);
+	starfive_hdmi_tx_phy_power_on(hdmi);
+
+	starfive_hdmi_tmds_driver_on(hdmi);
+	starfive_hdmi_sync_tmds(hdmi);
+
+	return 0;
+}
+
+static void starfive_hdmi_encoder_mode_set(struct drm_encoder *encoder,
+					   struct drm_display_mode *mode,
+					   struct drm_display_mode *adj_mode)
+{
+	struct starfive_hdmi *hdmi = encoder_to_hdmi(encoder);
+
+	starfive_hdmi_setup(hdmi, adj_mode);
+
+	memcpy(&hdmi->previous_mode, adj_mode, sizeof(hdmi->previous_mode));
+}
+
+static void starfive_hdmi_encoder_enable(struct drm_encoder *encoder)
+{
+	struct starfive_hdmi *hdmi = encoder_to_hdmi(encoder);
+
+	pm_runtime_get_sync(hdmi->dev);
+}
+
+static void starfive_hdmi_encoder_disable(struct drm_encoder *encoder)
+{
+	struct starfive_hdmi *hdmi = encoder_to_hdmi(encoder);
+
+	pm_runtime_put(hdmi->dev);
+}
+
+static bool starfive_hdmi_encoder_mode_fixup(struct drm_encoder *encoder,
+					     const struct drm_display_mode *mode,
+					     struct drm_display_mode *adj_mode)
+{
+	return true;
+}
+
+static int
+starfive_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
+				   struct drm_crtc_state *crtc_state,
+				   struct drm_connector_state *conn_state)
+{
+	return 0;
+}
+
+static const struct drm_encoder_helper_funcs starfive_hdmi_encoder_helper_funcs = {
+	.enable     = starfive_hdmi_encoder_enable,
+	.disable    = starfive_hdmi_encoder_disable,
+	.mode_fixup = starfive_hdmi_encoder_mode_fixup,
+	.mode_set   = starfive_hdmi_encoder_mode_set,
+	.atomic_check = starfive_hdmi_encoder_atomic_check,
+};
+
+static enum drm_connector_status
+starfive_hdmi_connector_detect(struct drm_connector *connector, bool force)
+{
+	struct starfive_hdmi *hdmi = connector_to_hdmi(connector);
+	int ret;
+
+	ret = pm_runtime_get_sync(hdmi->dev);
+	if (ret < 0)
+		return ret;
+
+	ret = (hdmi_readb(hdmi, HDMI_STATUS) & m_HOTPLUG) ?
+		connector_status_connected : connector_status_disconnected;
+
+	pm_runtime_put(hdmi->dev);
+
+	return ret;
+}
+
+static int starfive_hdmi_connector_get_modes(struct drm_connector *connector)
+{
+	struct starfive_hdmi *hdmi = connector_to_hdmi(connector);
+	struct edid *edid;
+	int ret = 0;
+
+	if (!hdmi->ddc)
+		return 0;
+
+	edid = drm_get_edid(connector, hdmi->ddc);
+	if (edid) {
+		hdmi->hdmi_data.sink_is_hdmi = drm_detect_hdmi_monitor(edid);
+		hdmi->hdmi_data.sink_has_audio = drm_detect_monitor_audio(edid);
+		drm_connector_update_edid_property(connector, edid);
+		ret = drm_add_edid_modes(connector, edid);
+		kfree(edid);
+	}
+
+	return ret;
+}
+
+static enum drm_mode_status
+starfive_hdmi_connector_mode_valid(struct drm_connector *connector,
+				   struct drm_display_mode *mode)
+{
+	const struct pre_pll_config *cfg = pre_pll_cfg_table;
+	int pclk = mode->clock * 1000;
+	bool valid = false;
+	int i;
+
+	for (i = 0; cfg[i].pixclock != (~0UL); i++) {
+		if (pclk == cfg[i].pixclock) {
+			if (pclk > 297000000)
+				continue;
+
+			valid = true;
+			break;
+		}
+	}
+
+	return (valid) ? MODE_OK : MODE_BAD;
+}
+
+static int
+starfive_hdmi_probe_single_connector_modes(struct drm_connector *connector,
+					   u32 maxX, u32 maxY)
+{
+	struct starfive_hdmi *hdmi = connector_to_hdmi(connector);
+	int ret;
+
+	pm_runtime_get_sync(hdmi->dev);
+
+	ret = drm_helper_probe_single_connector_modes(connector, 3840, 2160);
+
+	pm_runtime_put(hdmi->dev);
+
+	return ret;
+}
+
+static void starfive_hdmi_connector_destroy(struct drm_connector *connector)
+{
+	drm_connector_unregister(connector);
+	drm_connector_cleanup(connector);
+}
+
+static const struct drm_connector_funcs starfive_hdmi_connector_funcs = {
+	.fill_modes = starfive_hdmi_probe_single_connector_modes,
+	.detect = starfive_hdmi_connector_detect,
+	.destroy = starfive_hdmi_connector_destroy,
+	.reset = drm_atomic_helper_connector_reset,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static struct drm_connector_helper_funcs starfive_hdmi_connector_helper_funcs = {
+	.get_modes = starfive_hdmi_connector_get_modes,
+	.mode_valid = starfive_hdmi_connector_mode_valid,
+};
+
+static int starfive_hdmi_register(struct drm_device *drm, struct starfive_hdmi *hdmi)
+{
+	struct drm_encoder *encoder = &hdmi->encoder;
+	struct device *dev = hdmi->dev;
+
+	encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
+
+	/*
+	 * If we failed to find the CRTC(s) which this encoder is
+	 * supposed to be connected to, it's because the CRTC has
+	 * not been registered yet.  Defer probing, and hope that
+	 * the required CRTC is added later.
+	 */
+	if (encoder->possible_crtcs == 0)
+		return -EPROBE_DEFER;
+
+	drm_encoder_helper_add(encoder, &starfive_hdmi_encoder_helper_funcs);
+	drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
+
+	hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
+
+	drm_connector_helper_add(&hdmi->connector,
+				 &starfive_hdmi_connector_helper_funcs);
+	drm_connector_init_with_ddc(drm, &hdmi->connector,
+				    &starfive_hdmi_connector_funcs,
+				    DRM_MODE_CONNECTOR_HDMIA,
+				    hdmi->ddc);
+
+	drm_connector_attach_encoder(&hdmi->connector, encoder);
+
+	return 0;
+}
+
+static irqreturn_t starfive_hdmi_i2c_irq(struct starfive_hdmi *hdmi)
+{
+	struct starfive_hdmi_i2c *i2c = hdmi->i2c;
+	u8 stat;
+
+	stat = hdmi_readb(hdmi, HDMI_INTERRUPT_STATUS1);
+	if (!(stat & m_INT_EDID_READY))
+		return IRQ_NONE;
+
+	/* Clear HDMI EDID interrupt flag */
+	hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
+
+	complete(&i2c->cmp);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t starfive_hdmi_hardirq(int irq, void *dev_id)
+{
+	struct starfive_hdmi *hdmi = dev_id;
+	irqreturn_t ret = IRQ_NONE;
+	u8 interrupt;
+
+	if (hdmi->i2c)
+		ret = starfive_hdmi_i2c_irq(hdmi);
+
+	interrupt = hdmi_readb(hdmi, HDMI_STATUS);
+	if (interrupt & m_INT_HOTPLUG) {
+		hdmi_modb(hdmi, HDMI_STATUS, m_INT_HOTPLUG, m_INT_HOTPLUG);
+		ret = IRQ_WAKE_THREAD;
+	}
+
+	return ret;
+}
+
+static irqreturn_t starfive_hdmi_irq(int irq, void *dev_id)
+{
+	struct starfive_hdmi *hdmi = dev_id;
+
+	drm_helper_hpd_irq_event(hdmi->connector.dev);
+
+	return IRQ_HANDLED;
+}
+
+static int starfive_hdmi_i2c_read(struct starfive_hdmi *hdmi, struct i2c_msg *msgs)
+{
+	int length = msgs->len;
+	u8 *buf = msgs->buf;
+	int ret;
+
+	ret = wait_for_completion_timeout(&hdmi->i2c->cmp, HZ / 10);
+	if (!ret)
+		return -EAGAIN;
+
+	while (length--)
+		*buf++ = hdmi_readb(hdmi, HDMI_EDID_FIFO_ADDR);
+
+	return 0;
+}
+
+static int starfive_hdmi_i2c_write(struct starfive_hdmi *hdmi, struct i2c_msg *msgs)
+{
+	/*
+	 * The DDC module only support read EDID message, so
+	 * we assume that each word write to this i2c adapter
+	 * should be the offset of EDID word address.
+	 */
+	if (msgs->len != 1 ||
+	    (msgs->addr != DDC_ADDR && msgs->addr != DDC_SEGMENT_ADDR))
+		return -EINVAL;
+
+	reinit_completion(&hdmi->i2c->cmp);
+
+	if (msgs->addr == DDC_SEGMENT_ADDR)
+		hdmi->i2c->segment_addr = msgs->buf[0];
+	if (msgs->addr == DDC_ADDR)
+		hdmi->i2c->ddc_addr = msgs->buf[0];
+
+	/* Set edid fifo first addr */
+	hdmi_writeb(hdmi, HDMI_EDID_FIFO_OFFSET, 0x00);
+
+	/* Set edid word address 0x00/0x80 */
+	hdmi_writeb(hdmi, HDMI_EDID_WORD_ADDR, hdmi->i2c->ddc_addr);
+
+	/* Set edid segment pointer */
+	hdmi_writeb(hdmi, HDMI_EDID_SEGMENT_POINTER, hdmi->i2c->segment_addr);
+
+	return 0;
+}
+
+static int starfive_hdmi_i2c_xfer(struct i2c_adapter *adap,
+				  struct i2c_msg *msgs, int num)
+{
+	struct starfive_hdmi *hdmi = i2c_get_adapdata(adap);
+	struct starfive_hdmi_i2c *i2c = hdmi->i2c;
+	int i, ret = 0;
+
+	mutex_lock(&i2c->lock);
+
+	/* Clear the EDID interrupt flag and unmute the interrupt */
+	hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, m_INT_EDID_READY);
+	hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
+
+	for (i = 0; i < num; i++) {
+		DRM_DEV_DEBUG(hdmi->dev,
+			      "xfer: num: %d/%d, len: %d, flags: %#x\n",
+			      i + 1, num, msgs[i].len, msgs[i].flags);
+
+		if (msgs[i].flags & I2C_M_RD)
+			ret = starfive_hdmi_i2c_read(hdmi, &msgs[i]);
+		else
+			ret = starfive_hdmi_i2c_write(hdmi, &msgs[i]);
+
+		if (ret < 0)
+			break;
+	}
+
+	if (!ret)
+		ret = num;
+
+	/* Mute HDMI EDID interrupt */
+	hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0);
+
+	mutex_unlock(&i2c->lock);
+
+	return ret;
+}
+
+static u32 starfive_hdmi_i2c_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm starfive_hdmi_algorithm = {
+	.master_xfer	= starfive_hdmi_i2c_xfer,
+	.functionality	= starfive_hdmi_i2c_func,
+};
+
+static struct i2c_adapter *starfive_hdmi_i2c_adapter(struct starfive_hdmi *hdmi)
+{
+	struct i2c_adapter *adap;
+	struct starfive_hdmi_i2c *i2c;
+	int ret;
+
+	i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL);
+	if (!i2c)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_init(&i2c->lock);
+	init_completion(&i2c->cmp);
+
+	adap = &i2c->adap;
+	adap->class = I2C_CLASS_DDC;
+	adap->owner = THIS_MODULE;
+	adap->dev.parent = hdmi->dev;
+	adap->algo = &starfive_hdmi_algorithm;
+	strscpy(adap->name, "Starfive HDMI", sizeof(adap->name));
+	i2c_set_adapdata(adap, hdmi);
+
+	ret = i2c_add_adapter(adap);
+	if (ret) {
+		dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name);
+		devm_kfree(hdmi->dev, i2c);
+		return ERR_PTR(ret);
+	}
+
+	hdmi->i2c = i2c;
+
+	DRM_DEV_INFO(hdmi->dev, "registered %s I2C bus driver success\n", adap->name);
+
+	return adap;
+}
+
+static int starfive_hdmi_get_clk_rst(struct device *dev, struct starfive_hdmi *hdmi)
+{
+	hdmi->sys_clk = devm_clk_get(dev, "sysclk");
+	if (IS_ERR(hdmi->sys_clk)) {
+		DRM_DEV_ERROR(dev, "Unable to get HDMI sysclk clk\n");
+		return PTR_ERR(hdmi->sys_clk);
+	}
+	hdmi->mclk = devm_clk_get(dev, "mclk");
+	if (IS_ERR(hdmi->mclk)) {
+		DRM_DEV_ERROR(dev, "Unable to get HDMI mclk clk\n");
+		return PTR_ERR(hdmi->mclk);
+	}
+	hdmi->bclk = devm_clk_get(dev, "bclk");
+	if (IS_ERR(hdmi->bclk)) {
+		DRM_DEV_ERROR(dev, "Unable to get HDMI bclk clk\n");
+		return PTR_ERR(hdmi->bclk);
+	}
+	hdmi->tx_rst = reset_control_get_shared(dev, "hdmi_tx");
+	if (IS_ERR(hdmi->tx_rst)) {
+		DRM_DEV_ERROR(dev, "Unable to get HDMI tx rst\n");
+		return PTR_ERR(hdmi->tx_rst);
+	}
+	return 0;
+}
+
+static int starfive_hdmi_bind(struct device *dev, struct device *master,
+			      void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *drm = data;
+	struct starfive_hdmi *hdmi;
+	struct resource *iores;
+	int irq;
+	int ret;
+
+	hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
+	if (!hdmi)
+		return -ENOMEM;
+
+	hdmi->dev = dev;
+	hdmi->drm_dev = drm;
+
+	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	hdmi->regs = devm_ioremap_resource(dev, iores);
+	if (IS_ERR(hdmi->regs))
+		return PTR_ERR(hdmi->regs);
+
+	ret = starfive_hdmi_get_clk_rst(dev, hdmi);
+	ret = starfive_hdmi_enable_clk_deassert_rst(dev, hdmi);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		ret = irq;
+		goto err_disable_clk;
+	}
+
+	hdmi->ddc = starfive_hdmi_i2c_adapter(hdmi);
+	if (IS_ERR(hdmi->ddc)) {
+		ret = PTR_ERR(hdmi->ddc);
+		hdmi->ddc = NULL;
+		goto err_disable_clk;
+	}
+
+	hdmi->tmds_rate = clk_get_rate(hdmi->sys_clk);
+
+	starfive_hdmi_i2c_init(hdmi);
+
+	ret = starfive_hdmi_register(drm, hdmi);
+	if (ret)
+		goto err_put_adapter;
+
+	dev_set_drvdata(dev, hdmi);
+
+	/* Unmute hotplug interrupt */
+	hdmi_modb(hdmi, HDMI_STATUS, m_MASK_INT_HOTPLUG, v_MASK_INT_HOTPLUG(1));
+
+	ret = devm_request_threaded_irq(dev, irq, starfive_hdmi_hardirq,
+					starfive_hdmi_irq, IRQF_SHARED,
+					dev_name(dev), hdmi);
+	if (ret < 0)
+		goto err_cleanup_hdmi;
+
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
+	pm_runtime_enable(&pdev->dev);
+
+	starfive_hdmi_disable_clk_assert_rst(dev, hdmi);
+
+	return 0;
+err_cleanup_hdmi:
+	hdmi->connector.funcs->destroy(&hdmi->connector);
+	hdmi->encoder.funcs->destroy(&hdmi->encoder);
+err_put_adapter:
+	i2c_put_adapter(hdmi->ddc);
+err_disable_clk:
+	clk_disable_unprepare(hdmi->sys_clk);
+	clk_disable_unprepare(hdmi->mclk);
+	clk_disable_unprepare(hdmi->bclk);
+
+	return ret;
+}
+
+static void starfive_hdmi_unbind(struct device *dev, struct device *master,
+				 void *data)
+{
+	struct starfive_hdmi *hdmi = dev_get_drvdata(dev);
+
+	hdmi->connector.funcs->destroy(&hdmi->connector);
+	hdmi->encoder.funcs->destroy(&hdmi->encoder);
+
+	i2c_put_adapter(hdmi->ddc);
+
+	starfive_hdmi_disable_clk_assert_rst(dev, hdmi);
+}
+
+static const struct component_ops starfive_hdmi_ops = {
+	.bind	= starfive_hdmi_bind,
+	.unbind	= starfive_hdmi_unbind,
+};
+
+static int starfive_hdmi_probe(struct platform_device *pdev)
+{
+	return component_add(&pdev->dev, &starfive_hdmi_ops);
+}
+
+static int starfive_hdmi_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &starfive_hdmi_ops);
+
+	return 0;
+}
+
+static const struct dev_pm_ops hdmi_pm_ops = {
+	SET_RUNTIME_PM_OPS(hdmi_runtime_suspend, hdmi_runtime_resume, NULL)
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(hdmi_system_pm_suspend, hdmi_system_pm_resume)
+};
+
+static const struct of_device_id starfive_hdmi_dt_ids[] = {
+	{ .compatible = "starfive,hdmi",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, starfive_hdmi_dt_ids);
+
+struct platform_driver starfive_hdmi_driver = {
+	.probe  = starfive_hdmi_probe,
+	.remove = starfive_hdmi_remove,
+	.driver = {
+		.name = "starfive-hdmi",
+		.of_match_table = starfive_hdmi_dt_ids,
+		.pm = &hdmi_pm_ops,
+	},
+};
+
+MODULE_AUTHOR("StarFive Corporation");
+MODULE_DESCRIPTION("Starfive HDMI Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/verisilicon/starfive_hdmi.h b/drivers/gpu/drm/verisilicon/starfive_hdmi.h
new file mode 100644
index 000000000000..d151c61f9a3e
--- /dev/null
+++ b/drivers/gpu/drm/verisilicon/starfive_hdmi.h
@@ -0,0 +1,296 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2023 StarFive Technology Co., Ltd.
+ */
+
+#ifndef __STARFIVE_HDMI_H__
+#define __STARFIVE_HDMI_H__
+
+#include <drm/bridge/dw_hdmi.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#define DDC_SEGMENT_ADDR		0x30
+
+#define HDMI_SCL_RATE			(100 * 1000)
+#define DDC_BUS_FREQ_L			0x4b
+#define DDC_BUS_FREQ_H			0x4c
+
+#define HDMI_SYS_CTRL			0x00
+#define m_RST_ANALOG			BIT(6)
+#define v_RST_ANALOG			0
+#define v_NOT_RST_ANALOG		BIT(6)
+#define m_RST_DIGITAL			BIT(5)
+#define v_RST_DIGITAL			0
+#define v_NOT_RST_DIGITAL		BIT(5)
+#define m_REG_CLK_INV			BIT(4)
+#define v_REG_CLK_NOT_INV		0
+#define v_REG_CLK_INV			BIT(4)
+#define m_VCLK_INV			BIT(3)
+#define v_VCLK_NOT_INV			0
+#define v_VCLK_INV			BIT(3)
+#define m_REG_CLK_SOURCE		BIT(2)
+#define v_REG_CLK_SOURCE_TMDS		0
+#define v_REG_CLK_SOURCE_SYS		BIT(2)
+#define m_POWER				BIT(1)
+#define v_PWR_ON			0
+#define v_PWR_OFF			BIT(1)
+#define m_INT_POL			BIT(0)
+#define v_INT_POL_HIGH			1
+#define v_INT_POL_LOW			0
+
+#define HDMI_AV_MUTE			0x05
+#define m_AVMUTE_CLEAR			BIT(7)
+#define m_AVMUTE_ENABLE			BIT(6)
+#define m_AUDIO_MUTE			BIT(1)
+#define m_VIDEO_BLACK			BIT(0)
+#define v_AVMUTE_CLEAR(n)		((n) << 7)
+#define v_AVMUTE_ENABLE(n)		((n) << 6)
+#define v_AUDIO_MUTE(n)			((n) << 1)
+#define v_VIDEO_MUTE(n)			((n) << 0)
+
+#define HDMI_VIDEO_TIMING_CTL		0x08
+#define v_VSYNC_POLARITY(n)		((n) << 3)
+#define v_HSYNC_POLARITY(n)		((n) << 2)
+#define v_INETLACE(n)			((n) << 1)
+#define v_EXTERANL_VIDEO(n)		((n) << 0)
+
+#define HDMI_VIDEO_EXT_HTOTAL_L		0x09
+#define HDMI_VIDEO_EXT_HTOTAL_H		0x0a
+#define HDMI_VIDEO_EXT_HBLANK_L		0x0b
+#define HDMI_VIDEO_EXT_HBLANK_H		0x0c
+#define HDMI_VIDEO_EXT_HDELAY_L		0x0d
+#define HDMI_VIDEO_EXT_HDELAY_H		0x0e
+#define HDMI_VIDEO_EXT_HDURATION_L	0x0f
+#define HDMI_VIDEO_EXT_HDURATION_H	0x10
+#define HDMI_VIDEO_EXT_VTOTAL_L		0x11
+#define HDMI_VIDEO_EXT_VTOTAL_H		0x12
+#define HDMI_VIDEO_EXT_VBLANK		0x13
+#define HDMI_VIDEO_EXT_VDELAY		0x14
+#define HDMI_VIDEO_EXT_VDURATION	0x15
+
+#define HDMI_EDID_SEGMENT_POINTER	0x4d
+#define HDMI_EDID_WORD_ADDR			0x4e
+#define HDMI_EDID_FIFO_OFFSET		0x4f
+#define HDMI_EDID_FIFO_ADDR			0x50
+
+#define HDMI_INTERRUPT_MASK1		0xc0
+#define HDMI_INTERRUPT_STATUS1		0xc1
+#define	m_INT_ACTIVE_VSYNC			BIT(5)
+#define m_INT_EDID_READY			BIT(2)
+
+#define HDMI_STATUS					0xc8
+#define m_HOTPLUG					BIT(7)
+#define m_MASK_INT_HOTPLUG			BIT(5)
+#define m_INT_HOTPLUG				BIT(1)
+#define v_MASK_INT_HOTPLUG(n)		(((n) & 0x1) << 5)
+
+#define HDMI_SYNC					0xce
+
+#define UPDATE(x, h, l)\
+({\
+	typeof(x) x_ = (x);\
+	typeof(h) h_ = (h);\
+	typeof(l) l_ = (l);\
+	(((x_) << (l_)) & GENMASK((h_), (l_)));\
+})
+
+/* REG: 0x1a0 */
+#define STARFIVE_PRE_PLL_CONTROL			0x1a0
+#define STARFIVE_PCLK_VCO_DIV_5_MASK			BIT(1)
+#define STARFIVE_PCLK_VCO_DIV_5(x)			UPDATE(x, 1, 1)
+#define STARFIVE_PRE_PLL_POWER_DOWN			BIT(0)
+
+/* REG: 0x1a1 */
+#define STARFIVE_PRE_PLL_DIV_1				0x1a1
+#define STARFIVE_PRE_PLL_PRE_DIV_MASK			GENMASK(5, 0)
+#define STARFIVE_PRE_PLL_PRE_DIV(x)			UPDATE(x, 5, 0)
+
+/* REG: 0x1a2 */
+#define STARFIVE_PRE_PLL_DIV_2				0x1a2
+#define STARFIVE_SPREAD_SPECTRUM_MOD_DOWN		BIT(7)
+#define STARFIVE_SPREAD_SPECTRUM_MOD_DISABLE		BIT(6)
+#define STARFIVE_PRE_PLL_FRAC_DIV_DISABLE		UPDATE(3, 5, 4)
+#define STARFIVE_PRE_PLL_FB_DIV_11_8_MASK		GENMASK(3, 0)
+#define STARFIVE_PRE_PLL_FB_DIV_11_8(x)			UPDATE((x) >> 8, 3, 0)
+
+/* REG: 0x1a3 */
+#define STARFIVE_PRE_PLL_DIV_3				0x1a3
+#define STARFIVE_PRE_PLL_FB_DIV_7_0(x)			UPDATE(x, 7, 0)
+
+/* REG: 0x1a4*/
+#define STARFIVE_PRE_PLL_DIV_4				0x1a4
+#define STARFIVE_PRE_PLL_TMDSCLK_DIV_C_MASK		GENMASK(1, 0)
+#define STARFIVE_PRE_PLL_TMDSCLK_DIV_C(x)		UPDATE(x, 1, 0)
+#define STARFIVE_PRE_PLL_TMDSCLK_DIV_B_MASK		GENMASK(3, 2)
+#define STARFIVE_PRE_PLL_TMDSCLK_DIV_B(x)		UPDATE(x, 3, 2)
+#define STARFIVE_PRE_PLL_TMDSCLK_DIV_A_MASK		GENMASK(5, 4)
+#define STARFIVE_PRE_PLL_TMDSCLK_DIV_A(x)		UPDATE(x, 5, 4)
+
+/* REG: 0x1a5 */
+#define STARFIVE_PRE_PLL_DIV_5				0x1a5
+#define STARFIVE_PRE_PLL_PCLK_DIV_B_SHIFT		5
+#define STARFIVE_PRE_PLL_PCLK_DIV_B_MASK		GENMASK(6, 5)
+#define STARFIVE_PRE_PLL_PCLK_DIV_B(x)			UPDATE(x, 6, 5)
+#define STARFIVE_PRE_PLL_PCLK_DIV_A_MASK		GENMASK(4, 0)
+#define STARFIVE_PRE_PLL_PCLK_DIV_A(x)			UPDATE(x, 4, 0)
+
+/* REG: 0x1a6 */
+#define STARFIVE_PRE_PLL_DIV_6				0x1a6
+#define STARFIVE_PRE_PLL_PCLK_DIV_C_SHIFT		5
+#define STARFIVE_PRE_PLL_PCLK_DIV_C_MASK		GENMASK(6, 5)
+#define STARFIVE_PRE_PLL_PCLK_DIV_C(x)			UPDATE(x, 6, 5)
+#define STARFIVE_PRE_PLL_PCLK_DIV_D_MASK		GENMASK(4, 0)
+#define STARFIVE_PRE_PLL_PCLK_DIV_D(x)			UPDATE(x, 4, 0)
+
+/* REG: 0x1a9 */
+#define STARFIVE_PRE_PLL_LOCK_STATUS			0x1a9
+
+/* REG: 0x1aa */
+#define STARFIVE_POST_PLL_DIV_1				0x1aa
+#define STARFIVE_POST_PLL_POST_DIV_ENABLE		GENMASK(3, 2)
+#define STARFIVE_POST_PLL_REFCLK_SEL_TMDS		BIT(1)
+#define STARFIVE_POST_PLL_POWER_DOWN			BIT(0)
+#define STARFIVE_POST_PLL_FB_DIV_8(x)			UPDATE(((x) >> 8) << 4, 4, 4)
+
+/* REG:0x1ab */
+#define STARFIVE_POST_PLL_DIV_2				0x1ab
+#define STARFIVE_POST_PLL_Pre_DIV_MASK			GENMASK(5, 0)
+#define STARFIVE_POST_PLL_PRE_DIV(x)			UPDATE(x, 5, 0)
+
+/* REG: 0x1ac */
+#define STARFIVE_POST_PLL_DIV_3				0x1ac
+#define STARFIVE_POST_PLL_FB_DIV_7_0(x)			UPDATE(x, 7, 0)
+
+/* REG: 0x1ad */
+#define STARFIVE_POST_PLL_DIV_4				0x1ad
+#define STARFIVE_POST_PLL_POST_DIV_MASK			GENMASK(2, 0)
+#define STARFIVE_POST_PLL_POST_DIV_2			0x0
+#define STARFIVE_POST_PLL_POST_DIV_4			0x1
+#define STARFIVE_POST_PLL_POST_DIV_8			0x3
+
+/* REG: 0x1af */
+#define STARFIVE_POST_PLL_LOCK_STATUS			0x1af
+
+/* REG: 0x1b0 */
+#define STARFIVE_BIAS_CONTROL				0x1b0
+#define STARFIVE_BIAS_ENABLE				BIT(2)
+
+/* REG: 0x1b2 */
+#define STARFIVE_TMDS_CONTROL				0x1b2
+#define STARFIVE_TMDS_CLK_DRIVER_EN			BIT(3)
+#define STARFIVE_TMDS_D2_DRIVER_EN			BIT(2)
+#define STARFIVE_TMDS_D1_DRIVER_EN			BIT(1)
+#define STARFIVE_TMDS_D0_DRIVER_EN			BIT(0)
+#define STARFIVE_TMDS_DRIVER_ENABLE			(STARFIVE_TMDS_CLK_DRIVER_EN | \
+							 STARFIVE_TMDS_D2_DRIVER_EN | \
+							 STARFIVE_TMDS_D1_DRIVER_EN | \
+							 STARFIVE_TMDS_D0_DRIVER_EN)
+
+/* REG: 0x1b4 */
+#define STARFIVE_LDO_CONTROL				0x1b4
+#define STARFIVE_LDO_D2_EN				BIT(2)
+#define STARFIVE_LDO_D1_EN				BIT(1)
+#define STARFIVE_LDO_D0_EN				BIT(0)
+#define STARFIVE_LDO_ENABLE				(STARFIVE_LDO_D2_EN | \
+							 STARFIVE_LDO_D1_EN | \
+							 STARFIVE_LDO_D0_EN)
+
+/* REG: 0x1be */
+#define STARFIVE_SERIALIER_CONTROL			0x1be
+#define STARFIVE_SERIALIER_D2_EN			BIT(6)
+#define STARFIVE_SERIALIER_D1_EN			BIT(5)
+#define STARFIVE_SERIALIER_D0_EN			BIT(4)
+#define STARFIVE_SERIALIER_ENABLE			(STARFIVE_SERIALIER_D2_EN | \
+							 STARFIVE_SERIALIER_D1_EN | \
+							  STARFIVE_SERIALIER_D0_EN)
+
+/* REG: 0x1cc */
+#define STARFIVE_RX_CONTROL				0x1cc
+#define STARFIVE_RX_EN					BIT(3)
+#define STARFIVE_RX_CHANNEL_2_EN			BIT(2)
+#define STARFIVE_RX_CHANNEL_1_EN			BIT(1)
+#define STARFIVE_RX_CHANNEL_0_EN			BIT(0)
+#define STARFIVE_RX_ENABLE				(STARFIVE_RX_EN | \
+							 STARFIVE_RX_CHANNEL_2_EN | \
+							 STARFIVE_RX_CHANNEL_1_EN | \
+							 STARFIVE_RX_CHANNEL_0_EN)
+
+/* REG: 0x1d1 */
+#define STARFIVE_PRE_PLL_FRAC_DIV_H			0x1d1
+#define STARFIVE_PRE_PLL_FRAC_DIV_23_16(x)		UPDATE((x) >> 16, 7, 0)
+/* REG: 0x1d2 */
+#define STARFIVE_PRE_PLL_FRAC_DIV_M			0x1d2
+#define STARFIVE_PRE_PLL_FRAC_DIV_15_8(x)		UPDATE((x) >> 8, 7, 0)
+/* REG: 0x1d3 */
+#define STARFIVE_PRE_PLL_FRAC_DIV_L			0x1d3
+#define STARFIVE_PRE_PLL_FRAC_DIV_7_0(x)		UPDATE(x, 7, 0)
+
+struct pre_pll_config {
+	unsigned long pixclock;
+	unsigned long tmdsclock;
+	u8 prediv;
+	u16 fbdiv;
+	u8 tmds_div_a;
+	u8 tmds_div_b;
+	u8 tmds_div_c;
+	u8 pclk_div_a;
+	u8 pclk_div_b;
+	u8 pclk_div_c;
+	u8 pclk_div_d;
+	u8 vco_div_5_en;
+	u32 fracdiv;
+};
+
+struct post_pll_config {
+	unsigned long tmdsclock;
+	u8 prediv;
+	u16 fbdiv;
+	u8 postdiv;
+	u8 post_div_en;
+	u8 version;
+};
+
+struct phy_config {
+	unsigned long	tmdsclock;
+	u8		regs[14];
+};
+
+struct hdmi_data_info {
+	int vic;
+	bool sink_is_hdmi;
+	bool sink_has_audio;
+	unsigned int enc_in_format;
+	unsigned int enc_out_format;
+	unsigned int colorimetry;
+};
+
+struct starfive_hdmi {
+	struct device *dev;
+	struct drm_device *drm_dev;
+
+	int irq;
+	struct clk *sys_clk;
+	struct clk *mclk;
+	struct clk *bclk;
+	struct reset_control *tx_rst;
+	void __iomem *regs;
+
+	struct drm_connector	connector;
+	struct drm_encoder	encoder;
+
+	struct starfive_hdmi_i2c *i2c;
+	struct i2c_adapter *ddc;
+
+	unsigned long tmds_rate;
+
+	struct hdmi_data_info	hdmi_data;
+	struct drm_display_mode previous_mode;
+	const struct pre_pll_config	*pre_cfg;
+	const struct post_pll_config	*post_cfg;
+};
+
+#endif /* __STARFIVE_HDMI_H__ */
diff --git a/drivers/gpu/drm/verisilicon/vs_drv.c b/drivers/gpu/drm/verisilicon/vs_drv.c
index c28bfd74ffc9..b740fe934035 100644
--- a/drivers/gpu/drm/verisilicon/vs_drv.c
+++ b/drivers/gpu/drm/verisilicon/vs_drv.c
@@ -183,6 +183,12 @@ static const struct component_master_ops vs_drm_ops = {
 
 static struct platform_driver *drm_sub_drivers[] = {
 	&dc_platform_driver,
+
+	/* connector + encoder*/
+#ifdef CONFIG_STARFIVE_HDMI
+	&starfive_hdmi_driver,
+#endif
+
 };
 
 #define NUM_DRM_DRIVERS \
diff --git a/drivers/gpu/drm/verisilicon/vs_drv.h b/drivers/gpu/drm/verisilicon/vs_drv.h
index 0382b44e3bf0..3668e1d65b3f 100644
--- a/drivers/gpu/drm/verisilicon/vs_drv.h
+++ b/drivers/gpu/drm/verisilicon/vs_drv.h
@@ -45,4 +45,8 @@ static inline bool is_iommu_enabled(struct drm_device *dev)
 	return priv->domain ? true : false;
 }
 
+#ifdef CONFIG_STARFIVE_HDMI
+extern struct platform_driver starfive_hdmi_driver;
+#endif
+
 #endif /* __VS_DRV_H__ */
-- 
2.34.1