[PATCH v6 35/42] drm/mediatek: mtk_hdmi: Split driver and add common probe function

AngeloGioacchino Del Regno
2025-02-11T11:35:13Z

In preparation for adding a new driver for the HDMI TX v2 IP,
split out the functions that will be common between the already
present mtk_hdmi (v1) driver and the new one.

Since the probe flow for both drivers is 90% similar, add a common
probe function that will be called from each driver's .probe()
callback, avoiding lots of code duplication.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/gpu/drm/mediatek/Kconfig | 11 +-
drivers/gpu/drm/mediatek/Makefile | 1 +
drivers/gpu/drm/mediatek/mtk_hdmi.c | 542 +--------------------
drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 426 ++++++++++++++++
drivers/gpu/drm/mediatek/mtk_hdmi_common.h | 188 +++++++
5 files changed, 633 insertions(+), 535 deletions(-)
create mode 100644 drivers/gpu/drm/mediatek/mtk_hdmi_common.c
create mode 100644 drivers/gpu/drm/mediatek/mtk_hdmi_common.h

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 43afd0a26d14..78cf2d4fc85f 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -21,6 +21,7 @@ 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 332567f18c9a..107402c104e6 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_bridge_state *old_bridge_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_bridge_state *old_state)
{
@@ -1353,168 +1083,10 @@ 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;
- int ret;
-
- /* 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(np, "mediatek,syscon-hdmi");
- if (IS_ERR(hdmi->sys_regmap))
- return PTR_ERR(hdmi->sys_regmap);
-
- ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1, &hdmi->sys_offset);
- if (ret)
- return dev_err_probe(dev, ret,
- "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)
@@ -1562,26 +1134,6 @@ 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)
@@ -1603,100 +1155,21 @@ 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;
@@ -1772,3 +1245,4 @@ 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_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
new file mode 100644
index 000000000000..3dfde63198e5
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
@@ -0,0 +1,426 @@
+// 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;
+ int ret;
+
+ /* 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(np, "mediatek,syscon-hdmi");
+ if (IS_ERR(hdmi->sys_regmap))
+ return PTR_ERR(hdmi->sys_regmap);
+
+ ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1, &hdmi->sys_offset);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "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 */
--
2.48.1