diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index e47debd60619..994b48b82d44 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -30,9 +30,18 @@ config DRM_MEDIATEK_DP
 	help
 	  DRM/KMS Display Port driver for MediaTek SoCs.
 
+config DRM_MEDIATEK_HDMI_COMMON
+	tristate
+	depends on DRM_MEDIATEK
+	select DRM_DISPLAY_HDMI_HELPER
+	select DRM_DISPLAY_HELPER
+	select SND_SOC_HDMI_CODEC if SND_SOC
+	help
+	  MediaTek SoC HDMI common library
+
 config DRM_MEDIATEK_HDMI
 	tristate "DRM HDMI Support for Mediatek SoCs"
 	depends on DRM_MEDIATEK
-	select SND_SOC_HDMI_CODEC if SND_SOC
+	select DRM_MEDIATEK_HDMI_COMMON
 	help
 	  DRM/KMS HDMI driver for Mediatek SoCs
diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index 2681353adccf..f8e4da882c8e 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -23,6 +23,7 @@ mediatek-drm-y := mtk_crtc.o \
 
 obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
 
+obj-$(CONFIG_DRM_MEDIATEK_HDMI_COMMON) += mtk_hdmi_common.o
 obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mtk_cec.o
 obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mtk_hdmi.o
 obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mtk_hdmi_ddc.o
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index fd2d9c452b9f..d7a221bfc496 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -31,6 +31,7 @@
 #include <drm/drm_probe_helper.h>
 
 #include "mtk_cec.h"
+#include "mtk_hdmi_common.h"
 #include "mtk_hdmi_regs.h"
 
 #define NCTS_BYTES	7
@@ -43,151 +44,6 @@ enum mtk_hdmi_clk_id {
 	MTK_HDMI_CLK_COUNT
 };
 
-enum hdmi_aud_input_type {
-	HDMI_AUD_INPUT_I2S = 0,
-	HDMI_AUD_INPUT_SPDIF,
-};
-
-enum hdmi_aud_i2s_fmt {
-	HDMI_I2S_MODE_RJT_24BIT = 0,
-	HDMI_I2S_MODE_RJT_16BIT,
-	HDMI_I2S_MODE_LJT_24BIT,
-	HDMI_I2S_MODE_LJT_16BIT,
-	HDMI_I2S_MODE_I2S_24BIT,
-	HDMI_I2S_MODE_I2S_16BIT
-};
-
-enum hdmi_aud_mclk {
-	HDMI_AUD_MCLK_128FS,
-	HDMI_AUD_MCLK_192FS,
-	HDMI_AUD_MCLK_256FS,
-	HDMI_AUD_MCLK_384FS,
-	HDMI_AUD_MCLK_512FS,
-	HDMI_AUD_MCLK_768FS,
-	HDMI_AUD_MCLK_1152FS,
-};
-
-enum hdmi_aud_channel_type {
-	HDMI_AUD_CHAN_TYPE_1_0 = 0,
-	HDMI_AUD_CHAN_TYPE_1_1,
-	HDMI_AUD_CHAN_TYPE_2_0,
-	HDMI_AUD_CHAN_TYPE_2_1,
-	HDMI_AUD_CHAN_TYPE_3_0,
-	HDMI_AUD_CHAN_TYPE_3_1,
-	HDMI_AUD_CHAN_TYPE_4_0,
-	HDMI_AUD_CHAN_TYPE_4_1,
-	HDMI_AUD_CHAN_TYPE_5_0,
-	HDMI_AUD_CHAN_TYPE_5_1,
-	HDMI_AUD_CHAN_TYPE_6_0,
-	HDMI_AUD_CHAN_TYPE_6_1,
-	HDMI_AUD_CHAN_TYPE_7_0,
-	HDMI_AUD_CHAN_TYPE_7_1,
-	HDMI_AUD_CHAN_TYPE_3_0_LRS,
-	HDMI_AUD_CHAN_TYPE_3_1_LRS,
-	HDMI_AUD_CHAN_TYPE_4_0_CLRS,
-	HDMI_AUD_CHAN_TYPE_4_1_CLRS,
-	HDMI_AUD_CHAN_TYPE_6_1_CS,
-	HDMI_AUD_CHAN_TYPE_6_1_CH,
-	HDMI_AUD_CHAN_TYPE_6_1_OH,
-	HDMI_AUD_CHAN_TYPE_6_1_CHR,
-	HDMI_AUD_CHAN_TYPE_7_1_LH_RH,
-	HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR,
-	HDMI_AUD_CHAN_TYPE_7_1_LC_RC,
-	HDMI_AUD_CHAN_TYPE_7_1_LW_RW,
-	HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD,
-	HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS,
-	HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS,
-	HDMI_AUD_CHAN_TYPE_7_1_CS_CH,
-	HDMI_AUD_CHAN_TYPE_7_1_CS_OH,
-	HDMI_AUD_CHAN_TYPE_7_1_CS_CHR,
-	HDMI_AUD_CHAN_TYPE_7_1_CH_OH,
-	HDMI_AUD_CHAN_TYPE_7_1_CH_CHR,
-	HDMI_AUD_CHAN_TYPE_7_1_OH_CHR,
-	HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR,
-	HDMI_AUD_CHAN_TYPE_6_0_CS,
-	HDMI_AUD_CHAN_TYPE_6_0_CH,
-	HDMI_AUD_CHAN_TYPE_6_0_OH,
-	HDMI_AUD_CHAN_TYPE_6_0_CHR,
-	HDMI_AUD_CHAN_TYPE_7_0_LH_RH,
-	HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR,
-	HDMI_AUD_CHAN_TYPE_7_0_LC_RC,
-	HDMI_AUD_CHAN_TYPE_7_0_LW_RW,
-	HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD,
-	HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS,
-	HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS,
-	HDMI_AUD_CHAN_TYPE_7_0_CS_CH,
-	HDMI_AUD_CHAN_TYPE_7_0_CS_OH,
-	HDMI_AUD_CHAN_TYPE_7_0_CS_CHR,
-	HDMI_AUD_CHAN_TYPE_7_0_CH_OH,
-	HDMI_AUD_CHAN_TYPE_7_0_CH_CHR,
-	HDMI_AUD_CHAN_TYPE_7_0_OH_CHR,
-	HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR,
-	HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS,
-	HDMI_AUD_CHAN_TYPE_UNKNOWN = 0xFF
-};
-
-enum hdmi_aud_channel_swap_type {
-	HDMI_AUD_SWAP_LR,
-	HDMI_AUD_SWAP_LFE_CC,
-	HDMI_AUD_SWAP_LSRS,
-	HDMI_AUD_SWAP_RLS_RRS,
-	HDMI_AUD_SWAP_LR_STATUS,
-};
-
-struct hdmi_audio_param {
-	enum hdmi_audio_coding_type aud_codec;
-	enum hdmi_audio_sample_size aud_sample_size;
-	enum hdmi_aud_input_type aud_input_type;
-	enum hdmi_aud_i2s_fmt aud_i2s_fmt;
-	enum hdmi_aud_mclk aud_mclk;
-	enum hdmi_aud_channel_type aud_input_chan_type;
-	struct hdmi_codec_params codec_params;
-};
-
-struct mtk_hdmi_ver_conf {
-	const struct drm_bridge_funcs *bridge_funcs;
-	const struct hdmi_codec_ops *codec_ops;
-	const char * const *mtk_hdmi_clock_names;
-	int num_clocks;
-};
-
-struct mtk_hdmi_conf {
-	const struct mtk_hdmi_ver_conf *ver_conf;
-	bool tz_disabled;
-	bool cea_modes_only;
-	unsigned long max_mode_clock;
-};
-
-struct mtk_hdmi {
-	struct drm_bridge bridge;
-	struct drm_bridge *next_bridge;
-	struct drm_connector *curr_conn;/* current connector (only valid when 'enabled') */
-	struct device *dev;
-	const struct mtk_hdmi_conf *conf;
-	struct phy *phy;
-	struct device *cec_dev;
-	struct i2c_adapter *ddc_adpt;
-	struct clk **clk;
-	struct drm_display_mode mode;
-	bool dvi_mode;
-	struct regmap *sys_regmap;
-	unsigned int sys_offset;
-	struct regmap *regs;
-	struct platform_device *audio_pdev;
-	struct hdmi_audio_param aud_param;
-	bool audio_enable;
-	bool powered;
-	bool enabled;
-	hdmi_codec_plugged_cb plugged_cb;
-	struct device *codec_dev;
-	struct mutex update_plugged_status_lock;
-};
-
-static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
-{
-	return container_of(b, struct mtk_hdmi, bridge);
-}
-
 static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
 {
 	regmap_update_bits(hdmi->regs, VIDEO_SOURCE_SEL,
@@ -608,88 +464,6 @@ static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi,
 	regmap_write(hdmi->regs, GRL_CFG5, val);
 }
 
-struct hdmi_acr_n {
-	unsigned int clock;
-	unsigned int n[3];
-};
-
-/* Recommended N values from HDMI specification, tables 7-1 to 7-3 */
-static const struct hdmi_acr_n hdmi_rec_n_table[] = {
-	/* Clock, N: 32kHz 44.1kHz 48kHz */
-	{  25175, {  4576,  7007,  6864 } },
-	{  74176, { 11648, 17836, 11648 } },
-	{ 148352, { 11648,  8918,  5824 } },
-	{ 296703, {  5824,  4459,  5824 } },
-	{ 297000, {  3072,  4704,  5120 } },
-	{      0, {  4096,  6272,  6144 } }, /* all other TMDS clocks */
-};
-
-/**
- * hdmi_recommended_n() - Return N value recommended by HDMI specification
- * @freq: audio sample rate in Hz
- * @clock: rounded TMDS clock in kHz
- */
-static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock)
-{
-	const struct hdmi_acr_n *recommended;
-	unsigned int i;
-
-	for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) {
-		if (clock == hdmi_rec_n_table[i].clock)
-			break;
-	}
-	recommended = hdmi_rec_n_table + i;
-
-	switch (freq) {
-	case 32000:
-		return recommended->n[0];
-	case 44100:
-		return recommended->n[1];
-	case 48000:
-		return recommended->n[2];
-	case 88200:
-		return recommended->n[1] * 2;
-	case 96000:
-		return recommended->n[2] * 2;
-	case 176400:
-		return recommended->n[1] * 4;
-	case 192000:
-		return recommended->n[2] * 4;
-	default:
-		return (128 * freq) / 1000;
-	}
-}
-
-static unsigned int hdmi_mode_clock_to_hz(unsigned int clock)
-{
-	switch (clock) {
-	case 25175:
-		return 25174825;	/* 25.2/1.001 MHz */
-	case 74176:
-		return 74175824;	/* 74.25/1.001 MHz */
-	case 148352:
-		return 148351648;	/* 148.5/1.001 MHz */
-	case 296703:
-		return 296703297;	/* 297/1.001 MHz */
-	default:
-		return clock * 1000;
-	}
-}
-
-static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate,
-				      unsigned int tmds_clock, unsigned int n)
-{
-	return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n,
-				     128 * audio_sample_rate);
-}
-
-static void mtk_hdmi_get_ncts(unsigned int sample_rate, unsigned int clock,
-			      unsigned int *n, unsigned int *cts)
-{
-	*n = hdmi_recommended_n(sample_rate, clock);
-	*cts = hdmi_expected_cts(sample_rate, clock, *n);
-}
-
 static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n,
 				    unsigned int cts)
 {
@@ -1080,21 +854,6 @@ static const char * const mtk_hdmi_clk_names[MTK_HDMI_CLK_COUNT] = {
 	[MTK_HDMI_CLK_AUD_SPDIF] = "spdif",
 };
 
-static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi, struct device_node *np,
-				const char * const *clock_names, size_t num_clocks)
-{
-	int i;
-
-	for (i = 0; i < num_clocks; i++) {
-		hdmi->clk[i] = of_clk_get_by_name(np, clock_names[i]);
-
-		if (IS_ERR(hdmi->clk[i]))
-			return PTR_ERR(hdmi->clk[i]);
-	}
-
-	return 0;
-}
-
 static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi)
 {
 	int ret;
@@ -1237,13 +996,6 @@ static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge,
 	return 0;
 }
 
-static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
-				       const struct drm_display_mode *mode,
-				       struct drm_display_mode *adjusted_mode)
-{
-	return true;
-}
-
 static void mtk_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
 					   struct drm_atomic_state *state)
 {
@@ -1275,28 +1027,6 @@ static void mtk_hdmi_bridge_atomic_post_disable(struct drm_bridge *bridge,
 	hdmi->powered = false;
 }
 
-static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
-				const struct drm_display_mode *mode,
-				const struct drm_display_mode *adjusted_mode)
-{
-	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
-
-	dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n",
-		adjusted_mode->name, adjusted_mode->hdisplay);
-	dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d",
-		adjusted_mode->hsync_start, adjusted_mode->hsync_end,
-		adjusted_mode->htotal);
-	dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n",
-		adjusted_mode->hskew, adjusted_mode->vdisplay);
-	dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d",
-		adjusted_mode->vsync_start, adjusted_mode->vsync_end,
-		adjusted_mode->vtotal);
-	dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n",
-		adjusted_mode->vscan, adjusted_mode->flags);
-
-	drm_mode_copy(&hdmi->mode, adjusted_mode);
-}
-
 static void mtk_hdmi_bridge_atomic_pre_enable(struct drm_bridge *bridge,
 					      struct drm_atomic_state *state)
 {
@@ -1352,164 +1082,10 @@ static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = {
 	.edid_read = mtk_hdmi_bridge_edid_read,
 };
 
-static int mtk_hdmi_get_cec_dev(struct mtk_hdmi *hdmi, struct device *dev, struct device_node *np)
-{
-	struct platform_device *cec_pdev;
-	struct device_node *cec_np;
-
-	/* The CEC module handles HDMI hotplug detection */
-	cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
-	if (!cec_np)
-		return dev_err_probe(dev, -EINVAL, "Failed to find CEC node\n");
-
-	cec_pdev = of_find_device_by_node(cec_np);
-	if (!cec_pdev) {
-		dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
-			cec_np);
-		of_node_put(cec_np);
-		return -EPROBE_DEFER;
-	}
-	of_node_put(cec_np);
-
-	/*
-	 * The mediatek,syscon-hdmi property contains a phandle link to the
-	 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG
-	 * registers it contains.
-	 */
-	hdmi->sys_regmap = syscon_regmap_lookup_by_phandle_args(np, "mediatek,syscon-hdmi",
-								1, &hdmi->sys_offset);
-	if (IS_ERR(hdmi->sys_regmap))
-		return dev_err_probe(dev, PTR_ERR(hdmi->sys_regmap),
-				     "Failed to get system configuration registers\n");
-
-	hdmi->cec_dev = &cec_pdev->dev;
-	return 0;
-}
-
-static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, struct platform_device *pdev,
-				   const char * const *clk_names, size_t num_clocks)
-{
-	struct device *dev = &pdev->dev;
-	struct device_node *np = dev->of_node;
-	struct device_node *remote, *i2c_np;
-	int ret;
-
-	ret = mtk_hdmi_get_all_clk(hdmi, np, clk_names, num_clocks);
-	if (ret)
-		return dev_err_probe(dev, ret, "Failed to get clocks\n");
-
-	hdmi->regs = device_node_to_regmap(dev->of_node);
-	if (IS_ERR(hdmi->regs))
-		return PTR_ERR(hdmi->regs);
-
-	remote = of_graph_get_remote_node(np, 1, 0);
-	if (!remote)
-		return -EINVAL;
-
-	if (!of_device_is_compatible(remote, "hdmi-connector")) {
-		hdmi->next_bridge = of_drm_find_bridge(remote);
-		if (!hdmi->next_bridge) {
-			dev_err(dev, "Waiting for external bridge\n");
-			of_node_put(remote);
-			return -EPROBE_DEFER;
-		}
-	}
-
-	i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
-	of_node_put(remote);
-	if (!i2c_np)
-		return dev_err_probe(dev, -EINVAL, "No ddc-i2c-bus in connector\n");
-
-	hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
-	of_node_put(i2c_np);
-	if (!hdmi->ddc_adpt)
-		return dev_err_probe(dev, -EINVAL, "Failed to get ddc i2c adapter by node\n");
-
-	ret = mtk_hdmi_get_cec_dev(hdmi, dev, np);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
 /*
  * HDMI audio codec callbacks
  */
 
-static int mtk_hdmi_audio_params(struct mtk_hdmi *hdmi,
-				 struct hdmi_codec_daifmt *daifmt,
-				 struct hdmi_codec_params *params)
-{
-	struct hdmi_audio_param aud_params = { 0 };
-	unsigned int chan = params->cea.channels;
-
-	dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
-		params->sample_rate, params->sample_width, chan);
-
-	if (!hdmi->bridge.encoder)
-		return -ENODEV;
-
-	switch (chan) {
-	case 2:
-		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
-		break;
-	case 4:
-		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0;
-		break;
-	case 6:
-		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1;
-		break;
-	case 8:
-		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1;
-		break;
-	default:
-		dev_err(hdmi->dev, "channel[%d] not supported!\n", chan);
-		return -EINVAL;
-	}
-
-	switch (params->sample_rate) {
-	case 32000:
-	case 44100:
-	case 48000:
-	case 88200:
-	case 96000:
-	case 176400:
-	case 192000:
-		break;
-	default:
-		dev_err(hdmi->dev, "rate[%d] not supported!\n",
-			params->sample_rate);
-		return -EINVAL;
-	}
-
-	switch (daifmt->fmt) {
-	case HDMI_I2S:
-		aud_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
-		aud_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
-		aud_params.aud_input_type = HDMI_AUD_INPUT_I2S;
-		aud_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
-		aud_params.aud_mclk = HDMI_AUD_MCLK_128FS;
-		break;
-	case HDMI_SPDIF:
-		aud_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
-		aud_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
-		aud_params.aud_input_type = HDMI_AUD_INPUT_SPDIF;
-		break;
-	default:
-		dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,
-			daifmt->fmt);
-		return -EINVAL;
-	}
-	memcpy(&aud_params.codec_params, params, sizeof(aud_params.codec_params));
-	memcpy(&hdmi->aud_param, &aud_params, sizeof(aud_params));
-
-	dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n",
-		aud_params.aud_codec, aud_params.aud_input_type,
-		aud_params.aud_input_chan_type, aud_params.codec_params.sample_rate);
-
-	return 0;
-}
-
 static int mtk_hdmi_audio_hw_params(struct device *dev, void *data,
 				    struct hdmi_codec_daifmt *daifmt,
 				    struct hdmi_codec_params *params)
@@ -1557,26 +1133,6 @@ mtk_hdmi_audio_mute(struct device *dev, void *data,
 	return 0;
 }
 
-static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len)
-{
-	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
-
-	if (hdmi->enabled)
-		memcpy(buf, hdmi->curr_conn->eld, min(sizeof(hdmi->curr_conn->eld), len));
-	else
-		memset(buf, 0, len);
-	return 0;
-}
-
-static void mtk_hdmi_audio_set_plugged_cb(struct mtk_hdmi *hdmi, hdmi_codec_plugged_cb fn,
-					  struct device *codec_dev)
-{
-	mutex_lock(&hdmi->update_plugged_status_lock);
-	hdmi->plugged_cb = fn;
-	hdmi->codec_dev = codec_dev;
-	mutex_unlock(&hdmi->update_plugged_status_lock);
-}
-
 static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data,
 					  hdmi_codec_plugged_cb fn,
 					  struct device *codec_dev)
@@ -1598,100 +1154,21 @@ static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = {
 	.hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb,
 };
 
-static void mtk_hdmi_unregister_audio_driver(void *data)
-{
-	platform_device_unregister(data);
-}
-
-static int mtk_hdmi_register_audio_driver(struct device *dev)
-{
-	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
-	struct hdmi_audio_param *aud_param = &hdmi->aud_param;
-	struct hdmi_codec_pdata codec_data = {
-		.ops = hdmi->conf->ver_conf->codec_ops,
-		.max_i2s_channels = 2,
-		.i2s = 1,
-		.data = hdmi,
-		.no_capture_mute = 1,
-	};
-	int ret;
-
-	aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
-	aud_param->aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
-	aud_param->aud_input_type = HDMI_AUD_INPUT_I2S;
-	aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
-	aud_param->aud_mclk = HDMI_AUD_MCLK_128FS;
-	aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
-
-	hdmi->audio_pdev = platform_device_register_data(dev,
-							 HDMI_CODEC_DRV_NAME,
-							 PLATFORM_DEVID_AUTO,
-							 &codec_data,
-							 sizeof(codec_data));
-	if (IS_ERR(hdmi->audio_pdev))
-		return PTR_ERR(hdmi->audio_pdev);
-
-	ret = devm_add_action_or_reset(dev, mtk_hdmi_unregister_audio_driver,
-				       hdmi->audio_pdev);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
 static int mtk_hdmi_probe(struct platform_device *pdev)
 {
-	const struct mtk_hdmi_ver_conf *ver_conf;
 	struct mtk_hdmi *hdmi;
-	struct device *dev = &pdev->dev;
-	const int num_clocks = MTK_HDMI_CLK_COUNT;
 	int ret;
 
-	hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
-	if (!hdmi)
-		return -ENOMEM;
+	hdmi = mtk_hdmi_common_probe(pdev);
+	if (IS_ERR(hdmi))
+		return PTR_ERR(hdmi);
 
-	hdmi->dev = dev;
-	hdmi->conf = of_device_get_match_data(dev);
-	ver_conf = hdmi->conf->ver_conf;
-
-	hdmi->clk = devm_kcalloc(dev, ver_conf->num_clocks, sizeof(*hdmi->clk), GFP_KERNEL);
-	if (!hdmi->clk)
-		return -ENOMEM;
-
-	ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, ver_conf->mtk_hdmi_clock_names,
-				      ver_conf->num_clocks);
-	if (ret)
-		return ret;
-
-	hdmi->phy = devm_phy_get(dev, "hdmi");
-	if (IS_ERR(hdmi->phy))
-		return dev_err_probe(dev, PTR_ERR(hdmi->phy),
-				     "Failed to get HDMI PHY\n");
-
-	mutex_init(&hdmi->update_plugged_status_lock);
-	platform_set_drvdata(pdev, hdmi);
-
-	ret = mtk_hdmi_register_audio_driver(dev);
-	if (ret)
-		return dev_err_probe(dev, ret,
-				     "Failed to register audio driver\n");
-
-	hdmi->bridge.funcs = ver_conf->bridge_funcs;
-	hdmi->bridge.of_node = pdev->dev.of_node;
-	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
-			 | DRM_BRIDGE_OP_HPD;
-	hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
-	hdmi->bridge.vendor = "MediaTek";
-	hdmi->bridge.product = "On-Chip HDMI";
-
-	ret = devm_drm_bridge_add(dev, &hdmi->bridge);
-	if (ret)
-		return dev_err_probe(dev, ret, "Failed to add bridge\n");
+	if (!hdmi->cec_dev)
+		return dev_err_probe(hdmi->dev, -ENODEV, "CEC is required by HDMIv1\n");
 
 	ret = mtk_hdmi_clk_enable_audio(hdmi);
 	if (ret)
-		return dev_err_probe(dev, ret,
+		return dev_err_probe(hdmi->dev, ret,
 				     "Failed to enable audio clocks\n");
 
 	return 0;
@@ -1767,3 +1244,4 @@ MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
 MODULE_DESCRIPTION("MediaTek HDMI Driver");
 MODULE_LICENSE("GPL v2");
 MODULE_IMPORT_NS("DRM_MTK_HDMI_V1");
+MODULE_IMPORT_NS("DRM_MTK_HDMI");
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c.orig b/drivers/gpu/drm/mediatek/mtk_hdmi.c.orig
new file mode 100644
index 000000000000..fd2d9c452b9f
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c.orig
@@ -0,0 +1,1769 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Jie Qiu <jie.qiu@mediatek.com>
+ */
+
+#include <linux/arm-smccc.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/hdmi.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <sound/hdmi-codec.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+
+#include "mtk_cec.h"
+#include "mtk_hdmi_regs.h"
+
+#define NCTS_BYTES	7
+
+enum mtk_hdmi_clk_id {
+	MTK_HDMI_CLK_HDMI_PIXEL,
+	MTK_HDMI_CLK_HDMI_PLL,
+	MTK_HDMI_CLK_AUD_BCLK,
+	MTK_HDMI_CLK_AUD_SPDIF,
+	MTK_HDMI_CLK_COUNT
+};
+
+enum hdmi_aud_input_type {
+	HDMI_AUD_INPUT_I2S = 0,
+	HDMI_AUD_INPUT_SPDIF,
+};
+
+enum hdmi_aud_i2s_fmt {
+	HDMI_I2S_MODE_RJT_24BIT = 0,
+	HDMI_I2S_MODE_RJT_16BIT,
+	HDMI_I2S_MODE_LJT_24BIT,
+	HDMI_I2S_MODE_LJT_16BIT,
+	HDMI_I2S_MODE_I2S_24BIT,
+	HDMI_I2S_MODE_I2S_16BIT
+};
+
+enum hdmi_aud_mclk {
+	HDMI_AUD_MCLK_128FS,
+	HDMI_AUD_MCLK_192FS,
+	HDMI_AUD_MCLK_256FS,
+	HDMI_AUD_MCLK_384FS,
+	HDMI_AUD_MCLK_512FS,
+	HDMI_AUD_MCLK_768FS,
+	HDMI_AUD_MCLK_1152FS,
+};
+
+enum hdmi_aud_channel_type {
+	HDMI_AUD_CHAN_TYPE_1_0 = 0,
+	HDMI_AUD_CHAN_TYPE_1_1,
+	HDMI_AUD_CHAN_TYPE_2_0,
+	HDMI_AUD_CHAN_TYPE_2_1,
+	HDMI_AUD_CHAN_TYPE_3_0,
+	HDMI_AUD_CHAN_TYPE_3_1,
+	HDMI_AUD_CHAN_TYPE_4_0,
+	HDMI_AUD_CHAN_TYPE_4_1,
+	HDMI_AUD_CHAN_TYPE_5_0,
+	HDMI_AUD_CHAN_TYPE_5_1,
+	HDMI_AUD_CHAN_TYPE_6_0,
+	HDMI_AUD_CHAN_TYPE_6_1,
+	HDMI_AUD_CHAN_TYPE_7_0,
+	HDMI_AUD_CHAN_TYPE_7_1,
+	HDMI_AUD_CHAN_TYPE_3_0_LRS,
+	HDMI_AUD_CHAN_TYPE_3_1_LRS,
+	HDMI_AUD_CHAN_TYPE_4_0_CLRS,
+	HDMI_AUD_CHAN_TYPE_4_1_CLRS,
+	HDMI_AUD_CHAN_TYPE_6_1_CS,
+	HDMI_AUD_CHAN_TYPE_6_1_CH,
+	HDMI_AUD_CHAN_TYPE_6_1_OH,
+	HDMI_AUD_CHAN_TYPE_6_1_CHR,
+	HDMI_AUD_CHAN_TYPE_7_1_LH_RH,
+	HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR,
+	HDMI_AUD_CHAN_TYPE_7_1_LC_RC,
+	HDMI_AUD_CHAN_TYPE_7_1_LW_RW,
+	HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD,
+	HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS,
+	HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS,
+	HDMI_AUD_CHAN_TYPE_7_1_CS_CH,
+	HDMI_AUD_CHAN_TYPE_7_1_CS_OH,
+	HDMI_AUD_CHAN_TYPE_7_1_CS_CHR,
+	HDMI_AUD_CHAN_TYPE_7_1_CH_OH,
+	HDMI_AUD_CHAN_TYPE_7_1_CH_CHR,
+	HDMI_AUD_CHAN_TYPE_7_1_OH_CHR,
+	HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR,
+	HDMI_AUD_CHAN_TYPE_6_0_CS,
+	HDMI_AUD_CHAN_TYPE_6_0_CH,
+	HDMI_AUD_CHAN_TYPE_6_0_OH,
+	HDMI_AUD_CHAN_TYPE_6_0_CHR,
+	HDMI_AUD_CHAN_TYPE_7_0_LH_RH,
+	HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR,
+	HDMI_AUD_CHAN_TYPE_7_0_LC_RC,
+	HDMI_AUD_CHAN_TYPE_7_0_LW_RW,
+	HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD,
+	HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS,
+	HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS,
+	HDMI_AUD_CHAN_TYPE_7_0_CS_CH,
+	HDMI_AUD_CHAN_TYPE_7_0_CS_OH,
+	HDMI_AUD_CHAN_TYPE_7_0_CS_CHR,
+	HDMI_AUD_CHAN_TYPE_7_0_CH_OH,
+	HDMI_AUD_CHAN_TYPE_7_0_CH_CHR,
+	HDMI_AUD_CHAN_TYPE_7_0_OH_CHR,
+	HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR,
+	HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS,
+	HDMI_AUD_CHAN_TYPE_UNKNOWN = 0xFF
+};
+
+enum hdmi_aud_channel_swap_type {
+	HDMI_AUD_SWAP_LR,
+	HDMI_AUD_SWAP_LFE_CC,
+	HDMI_AUD_SWAP_LSRS,
+	HDMI_AUD_SWAP_RLS_RRS,
+	HDMI_AUD_SWAP_LR_STATUS,
+};
+
+struct hdmi_audio_param {
+	enum hdmi_audio_coding_type aud_codec;
+	enum hdmi_audio_sample_size aud_sample_size;
+	enum hdmi_aud_input_type aud_input_type;
+	enum hdmi_aud_i2s_fmt aud_i2s_fmt;
+	enum hdmi_aud_mclk aud_mclk;
+	enum hdmi_aud_channel_type aud_input_chan_type;
+	struct hdmi_codec_params codec_params;
+};
+
+struct mtk_hdmi_ver_conf {
+	const struct drm_bridge_funcs *bridge_funcs;
+	const struct hdmi_codec_ops *codec_ops;
+	const char * const *mtk_hdmi_clock_names;
+	int num_clocks;
+};
+
+struct mtk_hdmi_conf {
+	const struct mtk_hdmi_ver_conf *ver_conf;
+	bool tz_disabled;
+	bool cea_modes_only;
+	unsigned long max_mode_clock;
+};
+
+struct mtk_hdmi {
+	struct drm_bridge bridge;
+	struct drm_bridge *next_bridge;
+	struct drm_connector *curr_conn;/* current connector (only valid when 'enabled') */
+	struct device *dev;
+	const struct mtk_hdmi_conf *conf;
+	struct phy *phy;
+	struct device *cec_dev;
+	struct i2c_adapter *ddc_adpt;
+	struct clk **clk;
+	struct drm_display_mode mode;
+	bool dvi_mode;
+	struct regmap *sys_regmap;
+	unsigned int sys_offset;
+	struct regmap *regs;
+	struct platform_device *audio_pdev;
+	struct hdmi_audio_param aud_param;
+	bool audio_enable;
+	bool powered;
+	bool enabled;
+	hdmi_codec_plugged_cb plugged_cb;
+	struct device *codec_dev;
+	struct mutex update_plugged_status_lock;
+};
+
+static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
+{
+	return container_of(b, struct mtk_hdmi, bridge);
+}
+
+static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
+{
+	regmap_update_bits(hdmi->regs, VIDEO_SOURCE_SEL,
+			   VIDEO_CFG_4, black ? GEN_RGB : NORMAL_PATH);
+}
+
+static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
+{
+	struct arm_smccc_res res;
+
+	/*
+	 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI
+	 * output. This bit can only be controlled in ARM supervisor mode.
+	 * The ARM trusted firmware provides an API for the HDMI driver to set
+	 * this control bit to enable HDMI output in supervisor mode.
+	 */
+	if (hdmi->conf && hdmi->conf->tz_disabled)
+		regmap_update_bits(hdmi->sys_regmap,
+				   hdmi->sys_offset + HDMI_SYS_CFG20,
+				   0x80008005, enable ? 0x80000005 : 0x8000);
+	else
+		arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904,
+			      0x80000000, 0, 0, 0, 0, 0, &res);
+
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
+			   HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0);
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
+			   HDMI_ON | ANLG_ON, enable ? (HDMI_ON | ANLG_ON) : 0);
+}
+
+static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable)
+{
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
+			   HDMI2P0_EN, enable ? 0 : HDMI2P0_EN);
+}
+
+static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi)
+{
+	regmap_set_bits(hdmi->regs, GRL_AUDIO_CFG, AUDIO_ZERO);
+}
+
+static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi)
+{
+	regmap_clear_bits(hdmi->regs, GRL_AUDIO_CFG, AUDIO_ZERO);
+}
+
+static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi)
+{
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
+			   HDMI_RST, HDMI_RST);
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
+			   HDMI_RST, 0);
+	regmap_clear_bits(hdmi->regs, GRL_CFG3, CFG3_CONTROL_PACKET_DELAY);
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
+			   ANLG_ON, ANLG_ON);
+}
+
+static void mtk_hdmi_hw_enable_notice(struct mtk_hdmi *hdmi, bool enable_notice)
+{
+	regmap_update_bits(hdmi->regs, GRL_CFG2, CFG2_NOTICE_EN,
+			   enable_notice ? CFG2_NOTICE_EN : 0);
+}
+
+static void mtk_hdmi_hw_write_int_mask(struct mtk_hdmi *hdmi, u32 int_mask)
+{
+	regmap_write(hdmi->regs, GRL_INT_MASK, int_mask);
+}
+
+static void mtk_hdmi_hw_enable_dvi_mode(struct mtk_hdmi *hdmi, bool enable)
+{
+	regmap_update_bits(hdmi->regs, GRL_CFG1, CFG1_DVI, enable ? CFG1_DVI : 0);
+}
+
+static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer,
+					u8 len)
+{
+	u32 ctrl_reg = GRL_CTRL;
+	int i;
+	u8 *frame_data;
+	enum hdmi_infoframe_type frame_type;
+	u8 frame_ver;
+	u8 frame_len;
+	u8 checksum;
+	int ctrl_frame_en = 0;
+
+	frame_type = *buffer++;
+	frame_ver = *buffer++;
+	frame_len = *buffer++;
+	checksum = *buffer++;
+	frame_data = buffer;
+
+	dev_dbg(hdmi->dev,
+		"frame_type:0x%x,frame_ver:0x%x,frame_len:0x%x,checksum:0x%x\n",
+		frame_type, frame_ver, frame_len, checksum);
+
+	switch (frame_type) {
+	case HDMI_INFOFRAME_TYPE_AVI:
+		ctrl_frame_en = CTRL_AVI_EN;
+		ctrl_reg = GRL_CTRL;
+		break;
+	case HDMI_INFOFRAME_TYPE_SPD:
+		ctrl_frame_en = CTRL_SPD_EN;
+		ctrl_reg = GRL_CTRL;
+		break;
+	case HDMI_INFOFRAME_TYPE_AUDIO:
+		ctrl_frame_en = CTRL_AUDIO_EN;
+		ctrl_reg = GRL_CTRL;
+		break;
+	case HDMI_INFOFRAME_TYPE_VENDOR:
+		ctrl_frame_en = VS_EN;
+		ctrl_reg = GRL_ACP_ISRC_CTRL;
+		break;
+	default:
+		dev_err(hdmi->dev, "Unknown infoframe type %d\n", frame_type);
+		return;
+	}
+	regmap_clear_bits(hdmi->regs, ctrl_reg, ctrl_frame_en);
+	regmap_write(hdmi->regs, GRL_INFOFRM_TYPE, frame_type);
+	regmap_write(hdmi->regs, GRL_INFOFRM_VER, frame_ver);
+	regmap_write(hdmi->regs, GRL_INFOFRM_LNG, frame_len);
+
+	regmap_write(hdmi->regs, GRL_IFM_PORT, checksum);
+	for (i = 0; i < frame_len; i++)
+		regmap_write(hdmi->regs, GRL_IFM_PORT, frame_data[i]);
+
+	regmap_set_bits(hdmi->regs, ctrl_reg, ctrl_frame_en);
+}
+
+static void mtk_hdmi_hw_send_aud_packet(struct mtk_hdmi *hdmi, bool enable)
+{
+	regmap_update_bits(hdmi->regs, AUDIO_PACKET_OFF,
+			   GRL_SHIFT_R2, enable ? 0 : AUDIO_PACKET_OFF);
+}
+
+static void mtk_hdmi_hw_config_sys(struct mtk_hdmi *hdmi)
+{
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
+			   HDMI_OUT_FIFO_EN | MHL_MODE_ON, 0);
+	usleep_range(2000, 4000);
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
+			   HDMI_OUT_FIFO_EN | MHL_MODE_ON, HDMI_OUT_FIFO_EN);
+}
+
+static void mtk_hdmi_hw_set_deep_color_mode(struct mtk_hdmi *hdmi)
+{
+	regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
+			   DEEP_COLOR_MODE_MASK | DEEP_COLOR_EN,
+			   COLOR_8BIT_MODE);
+}
+
+static void mtk_hdmi_hw_send_av_mute(struct mtk_hdmi *hdmi)
+{
+	regmap_clear_bits(hdmi->regs, GRL_CFG4, CTRL_AVMUTE);
+	usleep_range(2000, 4000);
+	regmap_set_bits(hdmi->regs, GRL_CFG4, CTRL_AVMUTE);
+}
+
+static void mtk_hdmi_hw_send_av_unmute(struct mtk_hdmi *hdmi)
+{
+	regmap_update_bits(hdmi->regs, GRL_CFG4, CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET,
+			   CFG4_AV_UNMUTE_EN);
+	usleep_range(2000, 4000);
+	regmap_update_bits(hdmi->regs, GRL_CFG4, CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET,
+			   CFG4_AV_UNMUTE_SET);
+}
+
+static void mtk_hdmi_hw_ncts_enable(struct mtk_hdmi *hdmi, bool on)
+{
+	regmap_update_bits(hdmi->regs, GRL_CTS_CTRL, CTS_CTRL_SOFT,
+			   on ? 0 : CTS_CTRL_SOFT);
+}
+
+static void mtk_hdmi_hw_ncts_auto_write_enable(struct mtk_hdmi *hdmi,
+					       bool enable)
+{
+	regmap_update_bits(hdmi->regs, GRL_CTS_CTRL, NCTS_WRI_ANYTIME,
+			   enable ? NCTS_WRI_ANYTIME : 0);
+}
+
+static void mtk_hdmi_hw_msic_setting(struct mtk_hdmi *hdmi,
+				     struct drm_display_mode *mode)
+{
+	regmap_clear_bits(hdmi->regs, GRL_CFG4, CFG4_MHL_MODE);
+
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
+	    mode->clock == 74250 &&
+	    mode->vdisplay == 1080)
+		regmap_clear_bits(hdmi->regs, GRL_CFG2, CFG2_MHL_DE_SEL);
+	else
+		regmap_set_bits(hdmi->regs, GRL_CFG2, CFG2_MHL_DE_SEL);
+}
+
+static void mtk_hdmi_hw_aud_set_channel_swap(struct mtk_hdmi *hdmi,
+					enum hdmi_aud_channel_swap_type swap)
+{
+	u8 swap_bit;
+
+	switch (swap) {
+	case HDMI_AUD_SWAP_LR:
+		swap_bit = LR_SWAP;
+		break;
+	case HDMI_AUD_SWAP_LFE_CC:
+		swap_bit = LFE_CC_SWAP;
+		break;
+	case HDMI_AUD_SWAP_LSRS:
+		swap_bit = LSRS_SWAP;
+		break;
+	case HDMI_AUD_SWAP_RLS_RRS:
+		swap_bit = RLS_RRS_SWAP;
+		break;
+	case HDMI_AUD_SWAP_LR_STATUS:
+		swap_bit = LR_STATUS_SWAP;
+		break;
+	default:
+		swap_bit = LFE_CC_SWAP;
+		break;
+	}
+	regmap_update_bits(hdmi->regs, GRL_CH_SWAP, 0xff, swap_bit);
+}
+
+static void mtk_hdmi_hw_aud_set_bit_num(struct mtk_hdmi *hdmi,
+					enum hdmi_audio_sample_size bit_num)
+{
+	u32 val;
+
+	switch (bit_num) {
+	case HDMI_AUDIO_SAMPLE_SIZE_16:
+		val = AOUT_16BIT;
+		break;
+	case HDMI_AUDIO_SAMPLE_SIZE_20:
+		val = AOUT_20BIT;
+		break;
+	case HDMI_AUDIO_SAMPLE_SIZE_24:
+	case HDMI_AUDIO_SAMPLE_SIZE_STREAM:
+		val = AOUT_24BIT;
+		break;
+	}
+
+	regmap_update_bits(hdmi->regs, GRL_AOUT_CFG, AOUT_BNUM_SEL_MASK, val);
+}
+
+static void mtk_hdmi_hw_aud_set_i2s_fmt(struct mtk_hdmi *hdmi,
+					enum hdmi_aud_i2s_fmt i2s_fmt)
+{
+	u32 val;
+
+	regmap_read(hdmi->regs, GRL_CFG0, &val);
+	val &= ~(CFG0_W_LENGTH_MASK | CFG0_I2S_MODE_MASK);
+
+	switch (i2s_fmt) {
+	case HDMI_I2S_MODE_RJT_24BIT:
+		val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_24BIT;
+		break;
+	case HDMI_I2S_MODE_RJT_16BIT:
+		val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_16BIT;
+		break;
+	case HDMI_I2S_MODE_LJT_24BIT:
+	default:
+		val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_24BIT;
+		break;
+	case HDMI_I2S_MODE_LJT_16BIT:
+		val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_16BIT;
+		break;
+	case HDMI_I2S_MODE_I2S_24BIT:
+		val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_24BIT;
+		break;
+	case HDMI_I2S_MODE_I2S_16BIT:
+		val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_16BIT;
+		break;
+	}
+	regmap_write(hdmi->regs, GRL_CFG0, val);
+}
+
+static void mtk_hdmi_hw_audio_config(struct mtk_hdmi *hdmi, bool dst)
+{
+	const u8 mask = HIGH_BIT_RATE | DST_NORMAL_DOUBLE | SACD_DST | DSD_SEL;
+	u8 val;
+
+	/* Disable high bitrate, set DST packet normal/double */
+	regmap_clear_bits(hdmi->regs, GRL_AOUT_CFG, HIGH_BIT_RATE_PACKET_ALIGN);
+
+	if (dst)
+		val = DST_NORMAL_DOUBLE | SACD_DST;
+	else
+		val = 0;
+
+	regmap_update_bits(hdmi->regs, GRL_AUDIO_CFG, mask, val);
+}
+
+static void mtk_hdmi_hw_aud_set_i2s_chan_num(struct mtk_hdmi *hdmi,
+					enum hdmi_aud_channel_type channel_type,
+					u8 channel_count)
+{
+	unsigned int ch_switch;
+	u8 i2s_uv;
+
+	ch_switch = CH_SWITCH(7, 7) | CH_SWITCH(6, 6) |
+		    CH_SWITCH(5, 5) | CH_SWITCH(4, 4) |
+		    CH_SWITCH(3, 3) | CH_SWITCH(1, 2) |
+		    CH_SWITCH(2, 1) | CH_SWITCH(0, 0);
+
+	if (channel_count == 2) {
+		i2s_uv = I2S_UV_CH_EN(0);
+	} else if (channel_count == 3 || channel_count == 4) {
+		if (channel_count == 4 &&
+		    (channel_type == HDMI_AUD_CHAN_TYPE_3_0_LRS ||
+		    channel_type == HDMI_AUD_CHAN_TYPE_4_0))
+			i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(0);
+		else
+			i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2);
+	} else if (channel_count == 6 || channel_count == 5) {
+		if (channel_count == 6 &&
+		    channel_type != HDMI_AUD_CHAN_TYPE_5_1 &&
+		    channel_type != HDMI_AUD_CHAN_TYPE_4_1_CLRS) {
+			i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) |
+				 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0);
+		} else {
+			i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) |
+				 I2S_UV_CH_EN(0);
+		}
+	} else if (channel_count == 8 || channel_count == 7) {
+		i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) |
+			 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0);
+	} else {
+		i2s_uv = I2S_UV_CH_EN(0);
+	}
+
+	regmap_write(hdmi->regs, GRL_CH_SW0, ch_switch & 0xff);
+	regmap_write(hdmi->regs, GRL_CH_SW1, (ch_switch >> 8) & 0xff);
+	regmap_write(hdmi->regs, GRL_CH_SW2, (ch_switch >> 16) & 0xff);
+	regmap_write(hdmi->regs, GRL_I2S_UV, i2s_uv);
+}
+
+static void mtk_hdmi_hw_aud_set_input_type(struct mtk_hdmi *hdmi,
+					   enum hdmi_aud_input_type input_type)
+{
+	u32 val;
+
+	regmap_read(hdmi->regs, GRL_CFG1, &val);
+	if (input_type == HDMI_AUD_INPUT_I2S &&
+	    (val & CFG1_SPDIF) == CFG1_SPDIF) {
+		val &= ~CFG1_SPDIF;
+	} else if (input_type == HDMI_AUD_INPUT_SPDIF &&
+		(val & CFG1_SPDIF) == 0) {
+		val |= CFG1_SPDIF;
+	}
+	regmap_write(hdmi->regs, GRL_CFG1, val);
+}
+
+static void mtk_hdmi_hw_aud_set_channel_status(struct mtk_hdmi *hdmi,
+					       u8 *channel_status)
+{
+	int i;
+
+	for (i = 0; i < 5; i++) {
+		regmap_write(hdmi->regs, GRL_I2S_C_STA0 + i * 4, channel_status[i]);
+		regmap_write(hdmi->regs, GRL_L_STATUS_0 + i * 4, channel_status[i]);
+		regmap_write(hdmi->regs, GRL_R_STATUS_0 + i * 4, channel_status[i]);
+	}
+	for (; i < 24; i++) {
+		regmap_write(hdmi->regs, GRL_L_STATUS_0 + i * 4, 0);
+		regmap_write(hdmi->regs, GRL_R_STATUS_0 + i * 4, 0);
+	}
+}
+
+static void mtk_hdmi_hw_aud_src_reenable(struct mtk_hdmi *hdmi)
+{
+	u32 val;
+
+	regmap_read(hdmi->regs, GRL_MIX_CTRL, &val);
+	if (val & MIX_CTRL_SRC_EN) {
+		val &= ~MIX_CTRL_SRC_EN;
+		regmap_write(hdmi->regs, GRL_MIX_CTRL, val);
+		usleep_range(255, 512);
+		val |= MIX_CTRL_SRC_EN;
+		regmap_write(hdmi->regs, GRL_MIX_CTRL, val);
+	}
+}
+
+static void mtk_hdmi_hw_aud_src_disable(struct mtk_hdmi *hdmi)
+{
+	u32 val;
+
+	regmap_read(hdmi->regs, GRL_MIX_CTRL, &val);
+	val &= ~MIX_CTRL_SRC_EN;
+	regmap_write(hdmi->regs, GRL_MIX_CTRL, val);
+	regmap_write(hdmi->regs, GRL_SHIFT_L1, 0x00);
+}
+
+static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi,
+				     enum hdmi_aud_mclk mclk)
+{
+	u32 val;
+
+	regmap_read(hdmi->regs, GRL_CFG5, &val);
+	val &= CFG5_CD_RATIO_MASK;
+
+	switch (mclk) {
+	case HDMI_AUD_MCLK_128FS:
+		val |= CFG5_FS128;
+		break;
+	case HDMI_AUD_MCLK_256FS:
+		val |= CFG5_FS256;
+		break;
+	case HDMI_AUD_MCLK_384FS:
+		val |= CFG5_FS384;
+		break;
+	case HDMI_AUD_MCLK_512FS:
+		val |= CFG5_FS512;
+		break;
+	case HDMI_AUD_MCLK_768FS:
+		val |= CFG5_FS768;
+		break;
+	default:
+		val |= CFG5_FS256;
+		break;
+	}
+	regmap_write(hdmi->regs, GRL_CFG5, val);
+}
+
+struct hdmi_acr_n {
+	unsigned int clock;
+	unsigned int n[3];
+};
+
+/* Recommended N values from HDMI specification, tables 7-1 to 7-3 */
+static const struct hdmi_acr_n hdmi_rec_n_table[] = {
+	/* Clock, N: 32kHz 44.1kHz 48kHz */
+	{  25175, {  4576,  7007,  6864 } },
+	{  74176, { 11648, 17836, 11648 } },
+	{ 148352, { 11648,  8918,  5824 } },
+	{ 296703, {  5824,  4459,  5824 } },
+	{ 297000, {  3072,  4704,  5120 } },
+	{      0, {  4096,  6272,  6144 } }, /* all other TMDS clocks */
+};
+
+/**
+ * hdmi_recommended_n() - Return N value recommended by HDMI specification
+ * @freq: audio sample rate in Hz
+ * @clock: rounded TMDS clock in kHz
+ */
+static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock)
+{
+	const struct hdmi_acr_n *recommended;
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) {
+		if (clock == hdmi_rec_n_table[i].clock)
+			break;
+	}
+	recommended = hdmi_rec_n_table + i;
+
+	switch (freq) {
+	case 32000:
+		return recommended->n[0];
+	case 44100:
+		return recommended->n[1];
+	case 48000:
+		return recommended->n[2];
+	case 88200:
+		return recommended->n[1] * 2;
+	case 96000:
+		return recommended->n[2] * 2;
+	case 176400:
+		return recommended->n[1] * 4;
+	case 192000:
+		return recommended->n[2] * 4;
+	default:
+		return (128 * freq) / 1000;
+	}
+}
+
+static unsigned int hdmi_mode_clock_to_hz(unsigned int clock)
+{
+	switch (clock) {
+	case 25175:
+		return 25174825;	/* 25.2/1.001 MHz */
+	case 74176:
+		return 74175824;	/* 74.25/1.001 MHz */
+	case 148352:
+		return 148351648;	/* 148.5/1.001 MHz */
+	case 296703:
+		return 296703297;	/* 297/1.001 MHz */
+	default:
+		return clock * 1000;
+	}
+}
+
+static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate,
+				      unsigned int tmds_clock, unsigned int n)
+{
+	return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n,
+				     128 * audio_sample_rate);
+}
+
+static void mtk_hdmi_get_ncts(unsigned int sample_rate, unsigned int clock,
+			      unsigned int *n, unsigned int *cts)
+{
+	*n = hdmi_recommended_n(sample_rate, clock);
+	*cts = hdmi_expected_cts(sample_rate, clock, *n);
+}
+
+static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n,
+				    unsigned int cts)
+{
+	unsigned char val[NCTS_BYTES];
+	int i;
+
+	regmap_write(hdmi->regs, GRL_NCTS, 0);
+	regmap_write(hdmi->regs, GRL_NCTS, 0);
+	regmap_write(hdmi->regs, GRL_NCTS, 0);
+	memset(val, 0, sizeof(val));
+
+	val[0] = (cts >> 24) & 0xff;
+	val[1] = (cts >> 16) & 0xff;
+	val[2] = (cts >> 8) & 0xff;
+	val[3] = cts & 0xff;
+
+	val[4] = (n >> 16) & 0xff;
+	val[5] = (n >> 8) & 0xff;
+	val[6] = n & 0xff;
+
+	for (i = 0; i < NCTS_BYTES; i++)
+		regmap_write(hdmi->regs, GRL_NCTS, val[i]);
+}
+
+static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi,
+				     unsigned int sample_rate,
+				     unsigned int clock)
+{
+	unsigned int n, cts;
+
+	mtk_hdmi_get_ncts(sample_rate, clock, &n, &cts);
+
+	dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n",
+		__func__, sample_rate, clock, n, cts);
+
+	regmap_update_bits(hdmi->regs, DUMMY_304, AUDIO_I2S_NCTS_SEL, AUDIO_I2S_NCTS_SEL_64);
+	do_hdmi_hw_aud_set_ncts(hdmi, n, cts);
+}
+
+static u8 mtk_hdmi_aud_get_chnl_count(enum hdmi_aud_channel_type channel_type)
+{
+	switch (channel_type) {
+	case HDMI_AUD_CHAN_TYPE_1_0:
+	case HDMI_AUD_CHAN_TYPE_1_1:
+	case HDMI_AUD_CHAN_TYPE_2_0:
+		return 2;
+	case HDMI_AUD_CHAN_TYPE_2_1:
+	case HDMI_AUD_CHAN_TYPE_3_0:
+		return 3;
+	case HDMI_AUD_CHAN_TYPE_3_1:
+	case HDMI_AUD_CHAN_TYPE_4_0:
+	case HDMI_AUD_CHAN_TYPE_3_0_LRS:
+		return 4;
+	case HDMI_AUD_CHAN_TYPE_4_1:
+	case HDMI_AUD_CHAN_TYPE_5_0:
+	case HDMI_AUD_CHAN_TYPE_3_1_LRS:
+	case HDMI_AUD_CHAN_TYPE_4_0_CLRS:
+		return 5;
+	case HDMI_AUD_CHAN_TYPE_5_1:
+	case HDMI_AUD_CHAN_TYPE_6_0:
+	case HDMI_AUD_CHAN_TYPE_4_1_CLRS:
+	case HDMI_AUD_CHAN_TYPE_6_0_CS:
+	case HDMI_AUD_CHAN_TYPE_6_0_CH:
+	case HDMI_AUD_CHAN_TYPE_6_0_OH:
+	case HDMI_AUD_CHAN_TYPE_6_0_CHR:
+		return 6;
+	case HDMI_AUD_CHAN_TYPE_6_1:
+	case HDMI_AUD_CHAN_TYPE_6_1_CS:
+	case HDMI_AUD_CHAN_TYPE_6_1_CH:
+	case HDMI_AUD_CHAN_TYPE_6_1_OH:
+	case HDMI_AUD_CHAN_TYPE_6_1_CHR:
+	case HDMI_AUD_CHAN_TYPE_7_0:
+	case HDMI_AUD_CHAN_TYPE_7_0_LH_RH:
+	case HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR:
+	case HDMI_AUD_CHAN_TYPE_7_0_LC_RC:
+	case HDMI_AUD_CHAN_TYPE_7_0_LW_RW:
+	case HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD:
+	case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS:
+	case HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS:
+	case HDMI_AUD_CHAN_TYPE_7_0_CS_CH:
+	case HDMI_AUD_CHAN_TYPE_7_0_CS_OH:
+	case HDMI_AUD_CHAN_TYPE_7_0_CS_CHR:
+	case HDMI_AUD_CHAN_TYPE_7_0_CH_OH:
+	case HDMI_AUD_CHAN_TYPE_7_0_CH_CHR:
+	case HDMI_AUD_CHAN_TYPE_7_0_OH_CHR:
+	case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR:
+	case HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS:
+		return 7;
+	case HDMI_AUD_CHAN_TYPE_7_1:
+	case HDMI_AUD_CHAN_TYPE_7_1_LH_RH:
+	case HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR:
+	case HDMI_AUD_CHAN_TYPE_7_1_LC_RC:
+	case HDMI_AUD_CHAN_TYPE_7_1_LW_RW:
+	case HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD:
+	case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS:
+	case HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS:
+	case HDMI_AUD_CHAN_TYPE_7_1_CS_CH:
+	case HDMI_AUD_CHAN_TYPE_7_1_CS_OH:
+	case HDMI_AUD_CHAN_TYPE_7_1_CS_CHR:
+	case HDMI_AUD_CHAN_TYPE_7_1_CH_OH:
+	case HDMI_AUD_CHAN_TYPE_7_1_CH_CHR:
+	case HDMI_AUD_CHAN_TYPE_7_1_OH_CHR:
+	case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR:
+		return 8;
+	default:
+		return 2;
+	}
+}
+
+static int mtk_hdmi_video_change_vpll(struct mtk_hdmi *hdmi, u32 clock)
+{
+	unsigned long rate;
+	int ret;
+
+	/* The DPI driver already should have set TVDPLL to the correct rate */
+	ret = clk_set_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL], clock);
+	if (ret) {
+		dev_err(hdmi->dev, "Failed to set PLL to %u Hz: %d\n", clock,
+			ret);
+		return ret;
+	}
+
+	rate = clk_get_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
+
+	if (DIV_ROUND_CLOSEST(rate, 1000) != DIV_ROUND_CLOSEST(clock, 1000))
+		dev_warn(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock,
+			 rate);
+	else
+		dev_dbg(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, rate);
+
+	mtk_hdmi_hw_config_sys(hdmi);
+	mtk_hdmi_hw_set_deep_color_mode(hdmi);
+	return 0;
+}
+
+static void mtk_hdmi_video_set_display_mode(struct mtk_hdmi *hdmi,
+					    struct drm_display_mode *mode)
+{
+	mtk_hdmi_hw_reset(hdmi);
+	mtk_hdmi_hw_enable_notice(hdmi, true);
+	mtk_hdmi_hw_write_int_mask(hdmi, 0xff);
+	mtk_hdmi_hw_enable_dvi_mode(hdmi, hdmi->dvi_mode);
+	mtk_hdmi_hw_ncts_auto_write_enable(hdmi, true);
+
+	mtk_hdmi_hw_msic_setting(hdmi, mode);
+}
+
+
+static void mtk_hdmi_aud_set_input(struct mtk_hdmi *hdmi)
+{
+	enum hdmi_aud_channel_type chan_type;
+	u8 chan_count;
+	bool dst;
+
+	mtk_hdmi_hw_aud_set_channel_swap(hdmi, HDMI_AUD_SWAP_LFE_CC);
+	regmap_set_bits(hdmi->regs, GRL_MIX_CTRL, MIX_CTRL_FLAT);
+
+	if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF &&
+	    hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST) {
+		mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24);
+	} else if (hdmi->aud_param.aud_i2s_fmt == HDMI_I2S_MODE_LJT_24BIT) {
+		hdmi->aud_param.aud_i2s_fmt = HDMI_I2S_MODE_LJT_16BIT;
+	}
+
+	mtk_hdmi_hw_aud_set_i2s_fmt(hdmi, hdmi->aud_param.aud_i2s_fmt);
+	mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24);
+
+	dst = ((hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) &&
+	       (hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST));
+	mtk_hdmi_hw_audio_config(hdmi, dst);
+
+	if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF)
+		chan_type = HDMI_AUD_CHAN_TYPE_2_0;
+	else
+		chan_type = hdmi->aud_param.aud_input_chan_type;
+	chan_count = mtk_hdmi_aud_get_chnl_count(chan_type);
+	mtk_hdmi_hw_aud_set_i2s_chan_num(hdmi, chan_type, chan_count);
+	mtk_hdmi_hw_aud_set_input_type(hdmi, hdmi->aud_param.aud_input_type);
+}
+
+static int mtk_hdmi_aud_set_src(struct mtk_hdmi *hdmi,
+				struct drm_display_mode *display_mode)
+{
+	unsigned int sample_rate = hdmi->aud_param.codec_params.sample_rate;
+
+	mtk_hdmi_hw_ncts_enable(hdmi, false);
+	mtk_hdmi_hw_aud_src_disable(hdmi);
+	regmap_clear_bits(hdmi->regs, GRL_CFG2, CFG2_ACLK_INV);
+
+	if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_I2S) {
+		switch (sample_rate) {
+		case 32000:
+		case 44100:
+		case 48000:
+		case 88200:
+		case 96000:
+			break;
+		default:
+			return -EINVAL;
+		}
+		mtk_hdmi_hw_aud_set_mclk(hdmi, hdmi->aud_param.aud_mclk);
+	} else {
+		switch (sample_rate) {
+		case 32000:
+		case 44100:
+		case 48000:
+			break;
+		default:
+			return -EINVAL;
+		}
+		mtk_hdmi_hw_aud_set_mclk(hdmi, HDMI_AUD_MCLK_128FS);
+	}
+
+	mtk_hdmi_hw_aud_set_ncts(hdmi, sample_rate, display_mode->clock);
+
+	mtk_hdmi_hw_aud_src_reenable(hdmi);
+	return 0;
+}
+
+static int mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi,
+				      struct drm_display_mode *display_mode)
+{
+	mtk_hdmi_hw_aud_mute(hdmi);
+	mtk_hdmi_hw_send_aud_packet(hdmi, false);
+
+	mtk_hdmi_aud_set_input(hdmi);
+	mtk_hdmi_aud_set_src(hdmi, display_mode);
+	mtk_hdmi_hw_aud_set_channel_status(hdmi,
+			hdmi->aud_param.codec_params.iec.status);
+
+	usleep_range(50, 100);
+
+	mtk_hdmi_hw_ncts_enable(hdmi, true);
+	mtk_hdmi_hw_send_aud_packet(hdmi, true);
+	mtk_hdmi_hw_aud_unmute(hdmi);
+	return 0;
+}
+
+static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi,
+					struct drm_display_mode *mode)
+{
+	struct hdmi_avi_infoframe frame;
+	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
+	ssize_t err;
+
+	err = drm_hdmi_avi_infoframe_from_display_mode(&frame,
+						       hdmi->curr_conn, mode);
+	if (err < 0) {
+		dev_err(hdmi->dev,
+			"Failed to get AVI infoframe from mode: %zd\n", err);
+		return err;
+	}
+
+	err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
+	if (err < 0) {
+		dev_err(hdmi->dev, "Failed to pack AVI infoframe: %zd\n", err);
+		return err;
+	}
+
+	mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
+	return 0;
+}
+
+static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi)
+{
+	struct drm_bridge *bridge = &hdmi->bridge;
+	struct hdmi_spd_infoframe frame;
+	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE];
+	ssize_t err;
+
+	err = hdmi_spd_infoframe_init(&frame, bridge->vendor, bridge->product);
+	if (err < 0) {
+		dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n",
+			err);
+		return err;
+	}
+
+	err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer));
+	if (err < 0) {
+		dev_err(hdmi->dev, "Failed to pack SDP infoframe: %zd\n", err);
+		return err;
+	}
+
+	mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
+	return 0;
+}
+
+static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi)
+{
+	struct hdmi_audio_infoframe frame;
+	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
+	ssize_t err;
+
+	err = hdmi_audio_infoframe_init(&frame);
+	if (err < 0) {
+		dev_err(hdmi->dev, "Failed to setup audio infoframe: %zd\n",
+			err);
+		return err;
+	}
+
+	frame.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
+	frame.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
+	frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
+	frame.channels = mtk_hdmi_aud_get_chnl_count(
+					hdmi->aud_param.aud_input_chan_type);
+
+	err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
+	if (err < 0) {
+		dev_err(hdmi->dev, "Failed to pack audio infoframe: %zd\n",
+			err);
+		return err;
+	}
+
+	mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
+	return 0;
+}
+
+static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi,
+						struct drm_display_mode *mode)
+{
+	struct hdmi_vendor_infoframe frame;
+	u8 buffer[10];
+	ssize_t err;
+
+	err = drm_hdmi_vendor_infoframe_from_display_mode(&frame,
+							  hdmi->curr_conn, mode);
+	if (err) {
+		dev_err(hdmi->dev,
+			"Failed to get vendor infoframe from mode: %zd\n", err);
+		return err;
+	}
+
+	err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
+	if (err < 0) {
+		dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
+			err);
+		return err;
+	}
+
+	mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
+	return 0;
+}
+
+static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi)
+{
+	mtk_hdmi_hw_send_aud_packet(hdmi, true);
+	hdmi->audio_enable = true;
+}
+
+static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi)
+{
+	mtk_hdmi_hw_send_aud_packet(hdmi, false);
+	hdmi->audio_enable = false;
+}
+
+static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi,
+					    struct drm_display_mode *mode)
+{
+	int ret;
+
+	mtk_hdmi_hw_vid_black(hdmi, true);
+	mtk_hdmi_hw_aud_mute(hdmi);
+	mtk_hdmi_hw_send_av_mute(hdmi);
+	phy_power_off(hdmi->phy);
+
+	ret = mtk_hdmi_video_change_vpll(hdmi,
+					 mode->clock * 1000);
+	if (ret) {
+		dev_err(hdmi->dev, "Failed to set vpll: %d\n", ret);
+		return ret;
+	}
+	mtk_hdmi_video_set_display_mode(hdmi, mode);
+
+	phy_power_on(hdmi->phy);
+	mtk_hdmi_aud_output_config(hdmi, mode);
+
+	mtk_hdmi_hw_vid_black(hdmi, false);
+	mtk_hdmi_hw_aud_unmute(hdmi);
+	mtk_hdmi_hw_send_av_unmute(hdmi);
+
+	return 0;
+}
+
+static const char * const mtk_hdmi_clk_names[MTK_HDMI_CLK_COUNT] = {
+	[MTK_HDMI_CLK_HDMI_PIXEL] = "pixel",
+	[MTK_HDMI_CLK_HDMI_PLL] = "pll",
+	[MTK_HDMI_CLK_AUD_BCLK] = "bclk",
+	[MTK_HDMI_CLK_AUD_SPDIF] = "spdif",
+};
+
+static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi, struct device_node *np,
+				const char * const *clock_names, size_t num_clocks)
+{
+	int i;
+
+	for (i = 0; i < num_clocks; i++) {
+		hdmi->clk[i] = of_clk_get_by_name(np, clock_names[i]);
+
+		if (IS_ERR(hdmi->clk[i]))
+			return PTR_ERR(hdmi->clk[i]);
+	}
+
+	return 0;
+}
+
+static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi)
+{
+	int ret;
+
+	ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
+	if (ret) {
+		clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi)
+{
+	clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
+	clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
+}
+
+static enum drm_connector_status
+mtk_hdmi_update_plugged_status(struct mtk_hdmi *hdmi)
+{
+	bool connected;
+
+	mutex_lock(&hdmi->update_plugged_status_lock);
+	connected = mtk_cec_hpd_high(hdmi->cec_dev);
+	if (hdmi->plugged_cb && hdmi->codec_dev)
+		hdmi->plugged_cb(hdmi->codec_dev, connected);
+	mutex_unlock(&hdmi->update_plugged_status_lock);
+
+	return connected ?
+	       connector_status_connected : connector_status_disconnected;
+}
+
+static enum drm_connector_status mtk_hdmi_detect(struct mtk_hdmi *hdmi)
+{
+	return mtk_hdmi_update_plugged_status(hdmi);
+}
+
+static enum drm_mode_status
+mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
+			   const struct drm_display_info *info,
+			   const struct drm_display_mode *mode)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n",
+		mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),
+		!!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000);
+
+	if (hdmi->conf) {
+		if (hdmi->conf->cea_modes_only && !drm_match_cea_mode(mode))
+			return MODE_BAD;
+
+		if (hdmi->conf->max_mode_clock &&
+		    mode->clock > hdmi->conf->max_mode_clock)
+			return MODE_CLOCK_HIGH;
+	}
+
+	if (mode->clock < 27000)
+		return MODE_CLOCK_LOW;
+	if (mode->clock > 297000)
+		return MODE_CLOCK_HIGH;
+
+	return drm_mode_validate_size(mode, 0x1fff, 0x1fff);
+}
+
+static void mtk_hdmi_hpd_event(bool hpd, struct device *dev)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev) {
+		static enum drm_connector_status status;
+
+		status = mtk_hdmi_detect(hdmi);
+		drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev);
+		drm_bridge_hpd_notify(&hdmi->bridge, status);
+	}
+}
+
+/*
+ * Bridge callbacks
+ */
+
+static enum drm_connector_status mtk_hdmi_bridge_detect(struct drm_bridge *bridge)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	return mtk_hdmi_detect(hdmi);
+}
+
+static const struct drm_edid *mtk_hdmi_bridge_edid_read(struct drm_bridge *bridge,
+							struct drm_connector *connector)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+	const struct drm_edid *drm_edid;
+
+	if (!hdmi->ddc_adpt)
+		return NULL;
+	drm_edid = drm_edid_read_ddc(connector, hdmi->ddc_adpt);
+	if (drm_edid) {
+		/*
+		 * FIXME: This should use !connector->display_info.has_audio (or
+		 * !connector->display_info.is_hdmi) from a path that has read
+		 * the EDID and called drm_edid_connector_update().
+		 */
+		const struct edid *edid = drm_edid_raw(drm_edid);
+
+		hdmi->dvi_mode = !drm_detect_monitor_audio(edid);
+	}
+
+	return drm_edid;
+}
+
+static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge,
+				  enum drm_bridge_attach_flags flags)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+	int ret;
+
+	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+		DRM_ERROR("%s: The flag DRM_BRIDGE_ATTACH_NO_CONNECTOR must be supplied\n",
+			  __func__);
+		return -EINVAL;
+	}
+
+	if (hdmi->next_bridge) {
+		ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
+					bridge, flags);
+		if (ret)
+			return ret;
+	}
+
+	mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev);
+
+	return 0;
+}
+
+static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
+				       const struct drm_display_mode *mode,
+				       struct drm_display_mode *adjusted_mode)
+{
+	return true;
+}
+
+static void mtk_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
+					   struct drm_atomic_state *state)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	if (!hdmi->enabled)
+		return;
+
+	phy_power_off(hdmi->phy);
+	clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
+	clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
+
+	hdmi->curr_conn = NULL;
+
+	hdmi->enabled = false;
+}
+
+static void mtk_hdmi_bridge_atomic_post_disable(struct drm_bridge *bridge,
+						struct drm_atomic_state *state)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	if (!hdmi->powered)
+		return;
+
+	mtk_hdmi_hw_1p4_version_enable(hdmi, true);
+	mtk_hdmi_hw_make_reg_writable(hdmi, false);
+
+	hdmi->powered = false;
+}
+
+static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
+				const struct drm_display_mode *mode,
+				const struct drm_display_mode *adjusted_mode)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n",
+		adjusted_mode->name, adjusted_mode->hdisplay);
+	dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d",
+		adjusted_mode->hsync_start, adjusted_mode->hsync_end,
+		adjusted_mode->htotal);
+	dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n",
+		adjusted_mode->hskew, adjusted_mode->vdisplay);
+	dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d",
+		adjusted_mode->vsync_start, adjusted_mode->vsync_end,
+		adjusted_mode->vtotal);
+	dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n",
+		adjusted_mode->vscan, adjusted_mode->flags);
+
+	drm_mode_copy(&hdmi->mode, adjusted_mode);
+}
+
+static void mtk_hdmi_bridge_atomic_pre_enable(struct drm_bridge *bridge,
+					      struct drm_atomic_state *state)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	mtk_hdmi_hw_make_reg_writable(hdmi, true);
+	mtk_hdmi_hw_1p4_version_enable(hdmi, true);
+
+	hdmi->powered = true;
+}
+
+static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi,
+				    struct drm_display_mode *mode)
+{
+	mtk_hdmi_setup_audio_infoframe(hdmi);
+	mtk_hdmi_setup_avi_infoframe(hdmi, mode);
+	mtk_hdmi_setup_spd_infoframe(hdmi);
+	if (mode->flags & DRM_MODE_FLAG_3D_MASK)
+		mtk_hdmi_setup_vendor_specific_infoframe(hdmi, mode);
+}
+
+static void mtk_hdmi_bridge_atomic_enable(struct drm_bridge *bridge,
+					  struct drm_atomic_state *state)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	/* Retrieve the connector through the atomic state. */
+	hdmi->curr_conn = drm_atomic_get_new_connector_for_encoder(state,
+								   bridge->encoder);
+
+	mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode);
+	clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
+	clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
+	phy_power_on(hdmi->phy);
+	mtk_hdmi_send_infoframe(hdmi, &hdmi->mode);
+
+	hdmi->enabled = true;
+}
+
+static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = {
+	.mode_valid = mtk_hdmi_bridge_mode_valid,
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
+	.attach = mtk_hdmi_bridge_attach,
+	.mode_fixup = mtk_hdmi_bridge_mode_fixup,
+	.atomic_disable = mtk_hdmi_bridge_atomic_disable,
+	.atomic_post_disable = mtk_hdmi_bridge_atomic_post_disable,
+	.mode_set = mtk_hdmi_bridge_mode_set,
+	.atomic_pre_enable = mtk_hdmi_bridge_atomic_pre_enable,
+	.atomic_enable = mtk_hdmi_bridge_atomic_enable,
+	.detect = mtk_hdmi_bridge_detect,
+	.edid_read = mtk_hdmi_bridge_edid_read,
+};
+
+static int mtk_hdmi_get_cec_dev(struct mtk_hdmi *hdmi, struct device *dev, struct device_node *np)
+{
+	struct platform_device *cec_pdev;
+	struct device_node *cec_np;
+
+	/* The CEC module handles HDMI hotplug detection */
+	cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
+	if (!cec_np)
+		return dev_err_probe(dev, -EINVAL, "Failed to find CEC node\n");
+
+	cec_pdev = of_find_device_by_node(cec_np);
+	if (!cec_pdev) {
+		dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
+			cec_np);
+		of_node_put(cec_np);
+		return -EPROBE_DEFER;
+	}
+	of_node_put(cec_np);
+
+	/*
+	 * The mediatek,syscon-hdmi property contains a phandle link to the
+	 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG
+	 * registers it contains.
+	 */
+	hdmi->sys_regmap = syscon_regmap_lookup_by_phandle_args(np, "mediatek,syscon-hdmi",
+								1, &hdmi->sys_offset);
+	if (IS_ERR(hdmi->sys_regmap))
+		return dev_err_probe(dev, PTR_ERR(hdmi->sys_regmap),
+				     "Failed to get system configuration registers\n");
+
+	hdmi->cec_dev = &cec_pdev->dev;
+	return 0;
+}
+
+static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, struct platform_device *pdev,
+				   const char * const *clk_names, size_t num_clocks)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct device_node *remote, *i2c_np;
+	int ret;
+
+	ret = mtk_hdmi_get_all_clk(hdmi, np, clk_names, num_clocks);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get clocks\n");
+
+	hdmi->regs = device_node_to_regmap(dev->of_node);
+	if (IS_ERR(hdmi->regs))
+		return PTR_ERR(hdmi->regs);
+
+	remote = of_graph_get_remote_node(np, 1, 0);
+	if (!remote)
+		return -EINVAL;
+
+	if (!of_device_is_compatible(remote, "hdmi-connector")) {
+		hdmi->next_bridge = of_drm_find_bridge(remote);
+		if (!hdmi->next_bridge) {
+			dev_err(dev, "Waiting for external bridge\n");
+			of_node_put(remote);
+			return -EPROBE_DEFER;
+		}
+	}
+
+	i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
+	of_node_put(remote);
+	if (!i2c_np)
+		return dev_err_probe(dev, -EINVAL, "No ddc-i2c-bus in connector\n");
+
+	hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
+	of_node_put(i2c_np);
+	if (!hdmi->ddc_adpt)
+		return dev_err_probe(dev, -EINVAL, "Failed to get ddc i2c adapter by node\n");
+
+	ret = mtk_hdmi_get_cec_dev(hdmi, dev, np);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+/*
+ * HDMI audio codec callbacks
+ */
+
+static int mtk_hdmi_audio_params(struct mtk_hdmi *hdmi,
+				 struct hdmi_codec_daifmt *daifmt,
+				 struct hdmi_codec_params *params)
+{
+	struct hdmi_audio_param aud_params = { 0 };
+	unsigned int chan = params->cea.channels;
+
+	dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
+		params->sample_rate, params->sample_width, chan);
+
+	if (!hdmi->bridge.encoder)
+		return -ENODEV;
+
+	switch (chan) {
+	case 2:
+		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
+		break;
+	case 4:
+		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0;
+		break;
+	case 6:
+		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1;
+		break;
+	case 8:
+		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1;
+		break;
+	default:
+		dev_err(hdmi->dev, "channel[%d] not supported!\n", chan);
+		return -EINVAL;
+	}
+
+	switch (params->sample_rate) {
+	case 32000:
+	case 44100:
+	case 48000:
+	case 88200:
+	case 96000:
+	case 176400:
+	case 192000:
+		break;
+	default:
+		dev_err(hdmi->dev, "rate[%d] not supported!\n",
+			params->sample_rate);
+		return -EINVAL;
+	}
+
+	switch (daifmt->fmt) {
+	case HDMI_I2S:
+		aud_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+		aud_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+		aud_params.aud_input_type = HDMI_AUD_INPUT_I2S;
+		aud_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
+		aud_params.aud_mclk = HDMI_AUD_MCLK_128FS;
+		break;
+	case HDMI_SPDIF:
+		aud_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+		aud_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+		aud_params.aud_input_type = HDMI_AUD_INPUT_SPDIF;
+		break;
+	default:
+		dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,
+			daifmt->fmt);
+		return -EINVAL;
+	}
+	memcpy(&aud_params.codec_params, params, sizeof(aud_params.codec_params));
+	memcpy(&hdmi->aud_param, &aud_params, sizeof(aud_params));
+
+	dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n",
+		aud_params.aud_codec, aud_params.aud_input_type,
+		aud_params.aud_input_chan_type, aud_params.codec_params.sample_rate);
+
+	return 0;
+}
+
+static int mtk_hdmi_audio_hw_params(struct device *dev, void *data,
+				    struct hdmi_codec_daifmt *daifmt,
+				    struct hdmi_codec_params *params)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	if (!hdmi->audio_enable) {
+		dev_err(hdmi->dev, "hdmi audio is in disable state!\n");
+		return -EINVAL;
+	}
+
+	mtk_hdmi_audio_params(hdmi, daifmt, params);
+	mtk_hdmi_aud_output_config(hdmi, &hdmi->mode);
+
+	return 0;
+}
+
+static int mtk_hdmi_audio_startup(struct device *dev, void *data)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	mtk_hdmi_audio_enable(hdmi);
+
+	return 0;
+}
+
+static void mtk_hdmi_audio_shutdown(struct device *dev, void *data)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	mtk_hdmi_audio_disable(hdmi);
+}
+
+static int
+mtk_hdmi_audio_mute(struct device *dev, void *data,
+		    bool enable, int direction)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	if (enable)
+		mtk_hdmi_hw_aud_mute(hdmi);
+	else
+		mtk_hdmi_hw_aud_unmute(hdmi);
+
+	return 0;
+}
+
+static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	if (hdmi->enabled)
+		memcpy(buf, hdmi->curr_conn->eld, min(sizeof(hdmi->curr_conn->eld), len));
+	else
+		memset(buf, 0, len);
+	return 0;
+}
+
+static void mtk_hdmi_audio_set_plugged_cb(struct mtk_hdmi *hdmi, hdmi_codec_plugged_cb fn,
+					  struct device *codec_dev)
+{
+	mutex_lock(&hdmi->update_plugged_status_lock);
+	hdmi->plugged_cb = fn;
+	hdmi->codec_dev = codec_dev;
+	mutex_unlock(&hdmi->update_plugged_status_lock);
+}
+
+static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data,
+					  hdmi_codec_plugged_cb fn,
+					  struct device *codec_dev)
+{
+	struct mtk_hdmi *hdmi = data;
+
+	mtk_hdmi_audio_set_plugged_cb(hdmi, fn, codec_dev);
+	mtk_hdmi_update_plugged_status(hdmi);
+
+	return 0;
+}
+
+static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = {
+	.hw_params = mtk_hdmi_audio_hw_params,
+	.audio_startup = mtk_hdmi_audio_startup,
+	.audio_shutdown = mtk_hdmi_audio_shutdown,
+	.mute_stream = mtk_hdmi_audio_mute,
+	.get_eld = mtk_hdmi_audio_get_eld,
+	.hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb,
+};
+
+static void mtk_hdmi_unregister_audio_driver(void *data)
+{
+	platform_device_unregister(data);
+}
+
+static int mtk_hdmi_register_audio_driver(struct device *dev)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+	struct hdmi_audio_param *aud_param = &hdmi->aud_param;
+	struct hdmi_codec_pdata codec_data = {
+		.ops = hdmi->conf->ver_conf->codec_ops,
+		.max_i2s_channels = 2,
+		.i2s = 1,
+		.data = hdmi,
+		.no_capture_mute = 1,
+	};
+	int ret;
+
+	aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+	aud_param->aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+	aud_param->aud_input_type = HDMI_AUD_INPUT_I2S;
+	aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
+	aud_param->aud_mclk = HDMI_AUD_MCLK_128FS;
+	aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
+
+	hdmi->audio_pdev = platform_device_register_data(dev,
+							 HDMI_CODEC_DRV_NAME,
+							 PLATFORM_DEVID_AUTO,
+							 &codec_data,
+							 sizeof(codec_data));
+	if (IS_ERR(hdmi->audio_pdev))
+		return PTR_ERR(hdmi->audio_pdev);
+
+	ret = devm_add_action_or_reset(dev, mtk_hdmi_unregister_audio_driver,
+				       hdmi->audio_pdev);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int mtk_hdmi_probe(struct platform_device *pdev)
+{
+	const struct mtk_hdmi_ver_conf *ver_conf;
+	struct mtk_hdmi *hdmi;
+	struct device *dev = &pdev->dev;
+	const int num_clocks = MTK_HDMI_CLK_COUNT;
+	int ret;
+
+	hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
+	if (!hdmi)
+		return -ENOMEM;
+
+	hdmi->dev = dev;
+	hdmi->conf = of_device_get_match_data(dev);
+	ver_conf = hdmi->conf->ver_conf;
+
+	hdmi->clk = devm_kcalloc(dev, ver_conf->num_clocks, sizeof(*hdmi->clk), GFP_KERNEL);
+	if (!hdmi->clk)
+		return -ENOMEM;
+
+	ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, ver_conf->mtk_hdmi_clock_names,
+				      ver_conf->num_clocks);
+	if (ret)
+		return ret;
+
+	hdmi->phy = devm_phy_get(dev, "hdmi");
+	if (IS_ERR(hdmi->phy))
+		return dev_err_probe(dev, PTR_ERR(hdmi->phy),
+				     "Failed to get HDMI PHY\n");
+
+	mutex_init(&hdmi->update_plugged_status_lock);
+	platform_set_drvdata(pdev, hdmi);
+
+	ret = mtk_hdmi_register_audio_driver(dev);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to register audio driver\n");
+
+	hdmi->bridge.funcs = ver_conf->bridge_funcs;
+	hdmi->bridge.of_node = pdev->dev.of_node;
+	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
+			 | DRM_BRIDGE_OP_HPD;
+	hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
+	hdmi->bridge.vendor = "MediaTek";
+	hdmi->bridge.product = "On-Chip HDMI";
+
+	ret = devm_drm_bridge_add(dev, &hdmi->bridge);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to add bridge\n");
+
+	ret = mtk_hdmi_clk_enable_audio(hdmi);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to enable audio clocks\n");
+
+	return 0;
+}
+
+static void mtk_hdmi_remove(struct platform_device *pdev)
+{
+	struct mtk_hdmi *hdmi = platform_get_drvdata(pdev);
+
+	mtk_hdmi_clk_disable_audio(hdmi);
+}
+
+static __maybe_unused int mtk_hdmi_suspend(struct device *dev)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	mtk_hdmi_clk_disable_audio(hdmi);
+
+	return 0;
+}
+
+static __maybe_unused int mtk_hdmi_resume(struct device *dev)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	return mtk_hdmi_clk_enable_audio(hdmi);
+}
+
+static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops, mtk_hdmi_suspend, mtk_hdmi_resume);
+
+static const struct mtk_hdmi_ver_conf mtk_hdmi_v1_ver_conf = {
+	.bridge_funcs = &mtk_hdmi_bridge_funcs,
+	.codec_ops = &mtk_hdmi_audio_codec_ops,
+	.mtk_hdmi_clock_names = mtk_hdmi_clk_names,
+	.num_clocks = ARRAY_SIZE(mtk_hdmi_clk_names)
+};
+
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
+	.tz_disabled = true,
+	.ver_conf = &mtk_hdmi_v1_ver_conf
+};
+
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
+	.cea_modes_only = true,
+	.max_mode_clock = 148500,
+	.ver_conf = &mtk_hdmi_v1_ver_conf
+};
+
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8173 = {
+	.ver_conf = &mtk_hdmi_v1_ver_conf
+};
+
+static const struct of_device_id mtk_hdmi_of_ids[] = {
+	{ .compatible = "mediatek,mt2701-hdmi", .data = &mtk_hdmi_conf_mt2701 },
+	{ .compatible = "mediatek,mt8167-hdmi", .data = &mtk_hdmi_conf_mt8167 },
+	{ .compatible = "mediatek,mt8173-hdmi", .data = &mtk_hdmi_conf_mt8173 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mtk_hdmi_of_ids);
+
+static struct platform_driver mtk_hdmi_driver = {
+	.probe = mtk_hdmi_probe,
+	.remove = mtk_hdmi_remove,
+	.driver = {
+		.name = "mediatek-drm-hdmi",
+		.of_match_table = mtk_hdmi_of_ids,
+		.pm = &mtk_hdmi_pm_ops,
+	},
+};
+module_platform_driver(mtk_hdmi_driver);
+
+MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek HDMI Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS("DRM_MTK_HDMI_V1");
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
new file mode 100644
index 000000000000..316234cd6c13
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
@@ -0,0 +1,422 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ *                    AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+ */
+
+#include <drm/drm_modes.h>
+#include <linux/device.h>
+#include <linux/hdmi.h>
+#include <linux/i2c.h>
+#include <linux/math.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/syscon.h>
+#include <sound/hdmi-codec.h>
+
+#include "mtk_hdmi_common.h"
+
+struct hdmi_acr_n {
+	unsigned int clock;
+	unsigned int n[3];
+};
+
+/* Recommended N values from HDMI specification, tables 7-1 to 7-3 */
+static const struct hdmi_acr_n hdmi_rec_n_table[] = {
+	/* Clock, N: 32kHz 44.1kHz 48kHz */
+	{  25175, {  4576,  7007,  6864 } },
+	{  74176, { 11648, 17836, 11648 } },
+	{ 148352, { 11648,  8918,  5824 } },
+	{ 296703, {  5824,  4459,  5824 } },
+	{ 297000, {  3072,  4704,  5120 } },
+	{      0, {  4096,  6272,  6144 } }, /* all other TMDS clocks */
+};
+
+/**
+ * hdmi_recommended_n() - Return N value recommended by HDMI specification
+ * @freq: audio sample rate in Hz
+ * @clock: rounded TMDS clock in kHz
+ */
+static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock)
+{
+	const struct hdmi_acr_n *recommended;
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) {
+		if (clock == hdmi_rec_n_table[i].clock)
+			break;
+	}
+	recommended = hdmi_rec_n_table + i;
+
+	switch (freq) {
+	case 32000:
+		return recommended->n[0];
+	case 44100:
+		return recommended->n[1];
+	case 48000:
+		return recommended->n[2];
+	case 88200:
+		return recommended->n[1] * 2;
+	case 96000:
+		return recommended->n[2] * 2;
+	case 176400:
+		return recommended->n[1] * 4;
+	case 192000:
+		return recommended->n[2] * 4;
+	default:
+		return (128 * freq) / 1000;
+	}
+}
+
+static unsigned int hdmi_mode_clock_to_hz(unsigned int clock)
+{
+	switch (clock) {
+	case 25175:
+		return 25174825;	/* 25.2/1.001 MHz */
+	case 74176:
+		return 74175824;	/* 74.25/1.001 MHz */
+	case 148352:
+		return 148351648;	/* 148.5/1.001 MHz */
+	case 296703:
+		return 296703297;	/* 297/1.001 MHz */
+	default:
+		return clock * 1000;
+	}
+}
+
+static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate,
+				      unsigned int tmds_clock, unsigned int n)
+{
+	return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n,
+				     128 * audio_sample_rate);
+}
+
+void mtk_hdmi_get_ncts(unsigned int sample_rate, unsigned int clock,
+		       unsigned int *n, unsigned int *cts)
+{
+	*n = hdmi_recommended_n(sample_rate, clock);
+	*cts = hdmi_expected_cts(sample_rate, clock, *n);
+}
+EXPORT_SYMBOL_NS_GPL(mtk_hdmi_get_ncts, "DRM_MTK_HDMI");
+
+int mtk_hdmi_audio_params(struct mtk_hdmi *hdmi,
+			  struct hdmi_codec_daifmt *daifmt,
+			  struct hdmi_codec_params *params)
+{
+	struct hdmi_audio_param aud_params = { 0 };
+	unsigned int chan = params->cea.channels;
+
+	dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
+		params->sample_rate, params->sample_width, chan);
+
+	if (!hdmi->bridge.encoder)
+		return -ENODEV;
+
+	switch (chan) {
+	case 2:
+		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
+		break;
+	case 4:
+		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0;
+		break;
+	case 6:
+		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1;
+		break;
+	case 8:
+		aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1;
+		break;
+	default:
+		dev_err(hdmi->dev, "channel[%d] not supported!\n", chan);
+		return -EINVAL;
+	}
+
+	switch (params->sample_rate) {
+	case 32000:
+	case 44100:
+	case 48000:
+	case 88200:
+	case 96000:
+	case 176400:
+	case 192000:
+		break;
+	default:
+		dev_err(hdmi->dev, "rate[%d] not supported!\n",
+			params->sample_rate);
+		return -EINVAL;
+	}
+
+	switch (daifmt->fmt) {
+	case HDMI_I2S:
+		aud_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+		aud_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+		aud_params.aud_input_type = HDMI_AUD_INPUT_I2S;
+		aud_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
+		aud_params.aud_mclk = HDMI_AUD_MCLK_128FS;
+		break;
+	case HDMI_SPDIF:
+		aud_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+		aud_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+		aud_params.aud_input_type = HDMI_AUD_INPUT_SPDIF;
+		break;
+	default:
+		dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,
+			daifmt->fmt);
+		return -EINVAL;
+	}
+	memcpy(&aud_params.codec_params, params, sizeof(aud_params.codec_params));
+	memcpy(&hdmi->aud_param, &aud_params, sizeof(aud_params));
+
+	dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n",
+		aud_params.aud_codec, aud_params.aud_input_type,
+		aud_params.aud_input_chan_type, aud_params.codec_params.sample_rate);
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(mtk_hdmi_audio_params, "DRM_MTK_HDMI");
+
+int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+	if (hdmi->enabled)
+		memcpy(buf, hdmi->curr_conn->eld, min(sizeof(hdmi->curr_conn->eld), len));
+	else
+		memset(buf, 0, len);
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(mtk_hdmi_audio_get_eld, "DRM_MTK_HDMI");
+
+void mtk_hdmi_audio_set_plugged_cb(struct mtk_hdmi *hdmi, hdmi_codec_plugged_cb fn,
+				   struct device *codec_dev)
+{
+	mutex_lock(&hdmi->update_plugged_status_lock);
+	hdmi->plugged_cb = fn;
+	hdmi->codec_dev = codec_dev;
+	mutex_unlock(&hdmi->update_plugged_status_lock);
+}
+EXPORT_SYMBOL_NS_GPL(mtk_hdmi_audio_set_plugged_cb, "DRM_MTK_HDMI");
+
+static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi, struct device_node *np,
+				const char * const *clock_names, size_t num_clocks)
+{
+	int i;
+
+	for (i = 0; i < num_clocks; i++) {
+		hdmi->clk[i] = of_clk_get_by_name(np, clock_names[i]);
+
+		if (IS_ERR(hdmi->clk[i]))
+			return PTR_ERR(hdmi->clk[i]);
+	}
+
+	return 0;
+}
+
+bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
+				const struct drm_display_mode *mode,
+				struct drm_display_mode *adjusted_mode)
+{
+	return true;
+}
+EXPORT_SYMBOL_NS_GPL(mtk_hdmi_bridge_mode_fixup, "DRM_MTK_HDMI");
+
+void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
+			      const struct drm_display_mode *mode,
+			      const struct drm_display_mode *adjusted_mode)
+{
+	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+	dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n",
+		adjusted_mode->name, adjusted_mode->hdisplay);
+	dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d",
+		adjusted_mode->hsync_start, adjusted_mode->hsync_end,
+		adjusted_mode->htotal);
+	dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n",
+		adjusted_mode->hskew, adjusted_mode->vdisplay);
+	dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d",
+		adjusted_mode->vsync_start, adjusted_mode->vsync_end,
+		adjusted_mode->vtotal);
+	dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n",
+		adjusted_mode->vscan, adjusted_mode->flags);
+
+	drm_mode_copy(&hdmi->mode, adjusted_mode);
+}
+EXPORT_SYMBOL_NS_GPL(mtk_hdmi_bridge_mode_set, "DRM_MTK_HDMI");
+
+static int mtk_hdmi_get_cec_dev(struct mtk_hdmi *hdmi, struct device *dev, struct device_node *np)
+{
+	struct platform_device *cec_pdev;
+	struct device_node *cec_np;
+
+	/* The CEC module handles HDMI hotplug detection */
+	cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
+	if (!cec_np)
+		return dev_err_probe(dev, -EINVAL, "Failed to find CEC node\n");
+
+	cec_pdev = of_find_device_by_node(cec_np);
+	if (!cec_pdev) {
+		dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
+			cec_np);
+		of_node_put(cec_np);
+		return -EPROBE_DEFER;
+	}
+	of_node_put(cec_np);
+
+	/*
+	 * The mediatek,syscon-hdmi property contains a phandle link to the
+	 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG
+	 * registers it contains.
+	 */
+	hdmi->sys_regmap = syscon_regmap_lookup_by_phandle_args(np, "mediatek,syscon-hdmi",
+								1, &hdmi->sys_offset);
+	if (IS_ERR(hdmi->sys_regmap))
+		return dev_err_probe(dev, PTR_ERR(hdmi->sys_regmap),
+				     "Failed to get system configuration registers\n");
+
+	hdmi->cec_dev = &cec_pdev->dev;
+	return 0;
+}
+
+static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, struct platform_device *pdev,
+				   const char * const *clk_names, size_t num_clocks)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct device_node *remote, *i2c_np;
+	int ret;
+
+	ret = mtk_hdmi_get_all_clk(hdmi, np, clk_names, num_clocks);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get clocks\n");
+
+	hdmi->regs = device_node_to_regmap(dev->of_node);
+	if (IS_ERR(hdmi->regs))
+		return PTR_ERR(hdmi->regs);
+
+	remote = of_graph_get_remote_node(np, 1, 0);
+	if (!remote)
+		return -EINVAL;
+
+	if (!of_device_is_compatible(remote, "hdmi-connector")) {
+		hdmi->next_bridge = of_drm_find_bridge(remote);
+		if (!hdmi->next_bridge) {
+			dev_err(dev, "Waiting for external bridge\n");
+			of_node_put(remote);
+			return -EPROBE_DEFER;
+		}
+	}
+
+	i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
+	of_node_put(remote);
+	if (!i2c_np)
+		return dev_err_probe(dev, -EINVAL, "No ddc-i2c-bus in connector\n");
+
+	hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
+	of_node_put(i2c_np);
+	if (!hdmi->ddc_adpt)
+		return dev_err_probe(dev, -EINVAL, "Failed to get ddc i2c adapter by node\n");
+
+	ret = mtk_hdmi_get_cec_dev(hdmi, dev, np);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static void mtk_hdmi_unregister_audio_driver(void *data)
+{
+	platform_device_unregister(data);
+}
+
+static int mtk_hdmi_register_audio_driver(struct device *dev)
+{
+	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+	struct hdmi_audio_param *aud_param = &hdmi->aud_param;
+	struct hdmi_codec_pdata codec_data = {
+		.ops = hdmi->conf->ver_conf->codec_ops,
+		.max_i2s_channels = 2,
+		.i2s = 1,
+		.data = hdmi,
+		.no_capture_mute = 1,
+	};
+	int ret;
+
+	aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+	aud_param->aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+	aud_param->aud_input_type = HDMI_AUD_INPUT_I2S;
+	aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
+	aud_param->aud_mclk = HDMI_AUD_MCLK_128FS;
+	aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
+
+	hdmi->audio_pdev = platform_device_register_data(dev,
+							 HDMI_CODEC_DRV_NAME,
+							 PLATFORM_DEVID_AUTO,
+							 &codec_data,
+							 sizeof(codec_data));
+	if (IS_ERR(hdmi->audio_pdev))
+		return PTR_ERR(hdmi->audio_pdev);
+
+	ret = devm_add_action_or_reset(dev, mtk_hdmi_unregister_audio_driver,
+				       hdmi->audio_pdev);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+struct mtk_hdmi *mtk_hdmi_common_probe(struct platform_device *pdev)
+{
+	const struct mtk_hdmi_ver_conf *ver_conf;
+	struct device *dev = &pdev->dev;
+	struct mtk_hdmi *hdmi;
+	int ret;
+
+	hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
+	if (!hdmi)
+		return ERR_PTR(-ENOMEM);
+
+	hdmi->dev = dev;
+	hdmi->conf = of_device_get_match_data(dev);
+	ver_conf = hdmi->conf->ver_conf;
+
+	hdmi->clk = devm_kcalloc(dev, ver_conf->num_clocks, sizeof(*hdmi->clk), GFP_KERNEL);
+	if (!hdmi->clk)
+		return ERR_PTR(-ENOMEM);
+
+	ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, ver_conf->mtk_hdmi_clock_names,
+				      ver_conf->num_clocks);
+	if (ret)
+		return ERR_PTR(ret);
+
+	hdmi->phy = devm_phy_get(dev, "hdmi");
+	if (IS_ERR(hdmi->phy))
+		return dev_err_cast_probe(dev, hdmi->phy, "Failed to get HDMI PHY\n");
+
+	mutex_init(&hdmi->update_plugged_status_lock);
+	platform_set_drvdata(pdev, hdmi);
+
+	ret = mtk_hdmi_register_audio_driver(dev);
+	if (ret)
+		return dev_err_ptr_probe(dev, ret, "Cannot register HDMI Audio driver\n");
+
+	hdmi->bridge.funcs = ver_conf->bridge_funcs;
+	hdmi->bridge.of_node = pdev->dev.of_node;
+	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
+			 | DRM_BRIDGE_OP_HPD;
+	hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
+	hdmi->bridge.vendor = "MediaTek";
+	hdmi->bridge.product = "On-Chip HDMI";
+
+	ret = devm_drm_bridge_add(dev, &hdmi->bridge);
+	if (ret)
+		return dev_err_ptr_probe(dev, ret, "Failed to add bridge\n");
+
+	return hdmi;
+}
+EXPORT_SYMBOL_NS_GPL(mtk_hdmi_common_probe, "DRM_MTK_HDMI");
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>");
+MODULE_DESCRIPTION("MediaTek HDMI Common Library");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.h b/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
new file mode 100644
index 000000000000..d3de8afff40f
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
@@ -0,0 +1,188 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ */
+
+#ifndef _MTK_HDMI_COMMON_H
+#define _MTK_HDMI_COMMON_H
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_print.h>
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/hdmi.h>
+#include <linux/i2c.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mutex.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+
+#include <sound/hdmi-codec.h>
+
+enum hdmi_aud_input_type {
+	HDMI_AUD_INPUT_I2S = 0,
+	HDMI_AUD_INPUT_SPDIF,
+};
+
+enum hdmi_aud_i2s_fmt {
+	HDMI_I2S_MODE_RJT_24BIT = 0,
+	HDMI_I2S_MODE_RJT_16BIT,
+	HDMI_I2S_MODE_LJT_24BIT,
+	HDMI_I2S_MODE_LJT_16BIT,
+	HDMI_I2S_MODE_I2S_24BIT,
+	HDMI_I2S_MODE_I2S_16BIT
+};
+
+enum hdmi_aud_mclk {
+	HDMI_AUD_MCLK_128FS,
+	HDMI_AUD_MCLK_192FS,
+	HDMI_AUD_MCLK_256FS,
+	HDMI_AUD_MCLK_384FS,
+	HDMI_AUD_MCLK_512FS,
+	HDMI_AUD_MCLK_768FS,
+	HDMI_AUD_MCLK_1152FS,
+};
+
+enum hdmi_aud_channel_type {
+	HDMI_AUD_CHAN_TYPE_1_0 = 0,
+	HDMI_AUD_CHAN_TYPE_1_1,
+	HDMI_AUD_CHAN_TYPE_2_0,
+	HDMI_AUD_CHAN_TYPE_2_1,
+	HDMI_AUD_CHAN_TYPE_3_0,
+	HDMI_AUD_CHAN_TYPE_3_1,
+	HDMI_AUD_CHAN_TYPE_4_0,
+	HDMI_AUD_CHAN_TYPE_4_1,
+	HDMI_AUD_CHAN_TYPE_5_0,
+	HDMI_AUD_CHAN_TYPE_5_1,
+	HDMI_AUD_CHAN_TYPE_6_0,
+	HDMI_AUD_CHAN_TYPE_6_1,
+	HDMI_AUD_CHAN_TYPE_7_0,
+	HDMI_AUD_CHAN_TYPE_7_1,
+	HDMI_AUD_CHAN_TYPE_3_0_LRS,
+	HDMI_AUD_CHAN_TYPE_3_1_LRS,
+	HDMI_AUD_CHAN_TYPE_4_0_CLRS,
+	HDMI_AUD_CHAN_TYPE_4_1_CLRS,
+	HDMI_AUD_CHAN_TYPE_6_1_CS,
+	HDMI_AUD_CHAN_TYPE_6_1_CH,
+	HDMI_AUD_CHAN_TYPE_6_1_OH,
+	HDMI_AUD_CHAN_TYPE_6_1_CHR,
+	HDMI_AUD_CHAN_TYPE_7_1_LH_RH,
+	HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR,
+	HDMI_AUD_CHAN_TYPE_7_1_LC_RC,
+	HDMI_AUD_CHAN_TYPE_7_1_LW_RW,
+	HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD,
+	HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS,
+	HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS,
+	HDMI_AUD_CHAN_TYPE_7_1_CS_CH,
+	HDMI_AUD_CHAN_TYPE_7_1_CS_OH,
+	HDMI_AUD_CHAN_TYPE_7_1_CS_CHR,
+	HDMI_AUD_CHAN_TYPE_7_1_CH_OH,
+	HDMI_AUD_CHAN_TYPE_7_1_CH_CHR,
+	HDMI_AUD_CHAN_TYPE_7_1_OH_CHR,
+	HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR,
+	HDMI_AUD_CHAN_TYPE_6_0_CS,
+	HDMI_AUD_CHAN_TYPE_6_0_CH,
+	HDMI_AUD_CHAN_TYPE_6_0_OH,
+	HDMI_AUD_CHAN_TYPE_6_0_CHR,
+	HDMI_AUD_CHAN_TYPE_7_0_LH_RH,
+	HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR,
+	HDMI_AUD_CHAN_TYPE_7_0_LC_RC,
+	HDMI_AUD_CHAN_TYPE_7_0_LW_RW,
+	HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD,
+	HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS,
+	HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS,
+	HDMI_AUD_CHAN_TYPE_7_0_CS_CH,
+	HDMI_AUD_CHAN_TYPE_7_0_CS_OH,
+	HDMI_AUD_CHAN_TYPE_7_0_CS_CHR,
+	HDMI_AUD_CHAN_TYPE_7_0_CH_OH,
+	HDMI_AUD_CHAN_TYPE_7_0_CH_CHR,
+	HDMI_AUD_CHAN_TYPE_7_0_OH_CHR,
+	HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR,
+	HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS,
+	HDMI_AUD_CHAN_TYPE_UNKNOWN = 0xFF
+};
+
+enum hdmi_aud_channel_swap_type {
+	HDMI_AUD_SWAP_LR,
+	HDMI_AUD_SWAP_LFE_CC,
+	HDMI_AUD_SWAP_LSRS,
+	HDMI_AUD_SWAP_RLS_RRS,
+	HDMI_AUD_SWAP_LR_STATUS,
+};
+
+struct hdmi_audio_param {
+	enum hdmi_audio_coding_type aud_codec;
+	enum hdmi_audio_sample_size aud_sample_size;
+	enum hdmi_aud_input_type aud_input_type;
+	enum hdmi_aud_i2s_fmt aud_i2s_fmt;
+	enum hdmi_aud_mclk aud_mclk;
+	enum hdmi_aud_channel_type aud_input_chan_type;
+	struct hdmi_codec_params codec_params;
+};
+
+struct mtk_hdmi_ver_conf {
+	const struct drm_bridge_funcs *bridge_funcs;
+	const struct hdmi_codec_ops *codec_ops;
+	const char * const *mtk_hdmi_clock_names;
+	int num_clocks;
+};
+
+struct mtk_hdmi_conf {
+	const struct mtk_hdmi_ver_conf *ver_conf;
+	bool tz_disabled;
+	bool cea_modes_only;
+	unsigned long max_mode_clock;
+};
+
+struct mtk_hdmi {
+	struct drm_bridge bridge;
+	struct drm_bridge *next_bridge;
+	struct drm_connector *curr_conn;/* current connector (only valid when 'enabled') */
+	struct device *dev;
+	const struct mtk_hdmi_conf *conf;
+	struct phy *phy;
+	struct device *cec_dev;
+	struct i2c_adapter *ddc_adpt;
+	struct clk **clk;
+	struct drm_display_mode mode;
+	bool dvi_mode;
+	struct regmap *sys_regmap;
+	unsigned int sys_offset;
+	struct regmap *regs;
+	struct platform_device *audio_pdev;
+	struct hdmi_audio_param aud_param;
+	bool audio_enable;
+	bool powered;
+	bool enabled;
+	hdmi_codec_plugged_cb plugged_cb;
+	struct device *codec_dev;
+	struct mutex update_plugged_status_lock;
+};
+
+static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
+{
+	return container_of(b, struct mtk_hdmi, bridge);
+}
+
+
+int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len);
+void mtk_hdmi_audio_set_plugged_cb(struct mtk_hdmi *hdmi, hdmi_codec_plugged_cb fn,
+				   struct device *codec_dev);
+int mtk_hdmi_audio_params(struct mtk_hdmi *hdmi, struct hdmi_codec_daifmt *daifmt,
+			  struct hdmi_codec_params *params);
+void mtk_hdmi_get_ncts(unsigned int sample_rate, unsigned int clock,
+		       unsigned int *n, unsigned int *cts);
+bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
+				const struct drm_display_mode *mode,
+				struct drm_display_mode *adjusted_mode);
+void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
+			      const struct drm_display_mode *mode,
+			      const struct drm_display_mode *adjusted_mode);
+struct mtk_hdmi *mtk_hdmi_common_probe(struct platform_device *pdev);
+#endif /* _MTK_HDMI_COMMON_H */
