[PATCH v2 12/15] drm/mediatek: mtk_hdmi: Split driver and add common probe function

AngeloGioacchino Del Regno
2024-12-05T11:45:51Z

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 | 724 +++------------------
drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 425 ++++++++++++
drivers/gpu/drm/mediatek/mtk_hdmi_common.h | 203 ++++++
5 files changed, 729 insertions(+), 635 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 f496e6cfdfe0..73459f07dae3 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -34,10 +34,19 @@ 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
select PHY_MTK_HDMI
help
DRM/KMS HDMI driver for Mediatek SoCs
diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index 32a2ed6c0cfe..8973d7ba37d3 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -25,6 +25,7 @@ mediatek-drm-hdmi-objs := mtk_cec.o \
mtk_hdmi.o \
mtk_hdmi_ddc.o

+obj-$(CONFIG_DRM_MEDIATEK_HDMI_COMMON) += mtk_hdmi_common.o
obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o

obj-$(CONFIG_DRM_MEDIATEK_DP) += mtk_dp.o
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 7808141526fa..44b2bc55afa3 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
@@ -43,149 +44,13 @@ 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_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[MTK_HDMI_CLK_COUNT];
- struct drm_display_mode mode;
- bool dvi_mode;
- u32 min_clock;
- u32 max_clock;
- u32 max_hdisplay;
- u32 max_vdisplay;
- u32 ibias;
- u32 ibias_up;
- struct regmap *sys_regmap;
- unsigned int sys_offset;
- struct regmap *regs;
- enum hdmi_colorspace csp;
- 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;
+const char * const mtk_hdmi_clk_names_v1[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 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,
@@ -606,81 +471,6 @@ 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 do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n,
unsigned int cts)
{
@@ -710,9 +500,13 @@ static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi,
unsigned int clock)
{
unsigned int n, cts;
+ int ret;

- n = hdmi_recommended_n(sample_rate, clock);
- cts = hdmi_expected_cts(sample_rate, clock, n);
+ ret = mtk_hdmi_get_ncts(sample_rate, clock, &n, &cts);
+ if (ret) {
+ dev_err(hdmi->dev, "Invalid sample rate: %u\n", sample_rate);
+ return;
+ }

dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n",
__func__, sample_rate, clock, n, cts);
@@ -829,7 +623,6 @@ static void mtk_hdmi_video_set_display_mode(struct mtk_hdmi *hdmi,
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;
@@ -920,53 +713,46 @@ static int mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi,
return 0;
}

-static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi,
+static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi, u8 *buffer, size_t bufsz,
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);
+ 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));
+ err = hdmi_avi_infoframe_pack(&frame, buffer, bufsz);
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,
- const char *vendor,
- const char *product)
+static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi, u8 *buffer, size_t bufsz,
+ const char *vendor, const char *product)
{
struct hdmi_spd_infoframe frame;
- u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE];
ssize_t err;

err = hdmi_spd_infoframe_init(&frame, vendor, product);
if (err < 0) {
- dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n",
- err);
+ dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n", err);
return err;
}

- err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer));
+ err = hdmi_spd_infoframe_pack(&frame, buffer, bufsz);
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;
}

@@ -1026,19 +812,12 @@ static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi,
return 0;
}

-static int mtk_hdmi_output_init(struct mtk_hdmi *hdmi)
+static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi, u8 *buffer_spd, size_t bufsz_spd,
+ u8 *buffer_avi, size_t bufsz_avi,
+ struct drm_display_mode *mode)
{
- struct hdmi_audio_param *aud_param = &hdmi->aud_param;
-
- hdmi->csp = HDMI_COLORSPACE_RGB;
- 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;
-
- return 0;
+ mtk_hdmi_setup_avi_infoframe(hdmi, buffer_avi, bufsz_avi, mode);
+ mtk_hdmi_setup_spd_infoframe(hdmi, buffer_spd, bufsz_spd, "mediatek", "On-chip HDMI");
}

static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi)
@@ -1053,20 +832,6 @@ static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi)
hdmi->audio_enable = false;
}

-static int mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi,
- struct hdmi_audio_param *param)
-{
- if (!hdmi->audio_enable) {
- dev_err(hdmi->dev, "hdmi audio is in disable state!\n");
- return -EINVAL;
- }
- dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n",
- param->aud_codec, param->aud_input_type,
- param->aud_input_chan_type, param->codec_params.sample_rate);
- memcpy(&hdmi->aud_param, param, sizeof(*param));
- return mtk_hdmi_aud_output_config(hdmi, &hdmi->mode);
-}
-
static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi,
struct drm_display_mode *mode)
{
@@ -1095,27 +860,6 @@ static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *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)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names); i++) {
- hdmi->clk[i] = of_clk_get_by_name(np,
- mtk_hdmi_clk_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;
@@ -1125,13 +869,12 @@ static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi)
return ret;

ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
- if (ret)
- goto err;
+ if (ret) {
+ clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
+ return ret;
+ }

return 0;
-err:
- clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
- return ret;
}

static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi)
@@ -1143,10 +886,11 @@ static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi)
static enum drm_connector_status
mtk_hdmi_update_plugged_status(struct mtk_hdmi *hdmi)
{
- bool connected;
+ bool connected = true;

mutex_lock(&hdmi->update_plugged_status_lock);
- connected = mtk_cec_hpd_high(hdmi->cec_dev);
+ if (hdmi->cec_dev)
+ 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);
@@ -1254,18 +998,12 @@ static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge,
return ret;
}

- mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev);
+ if (hdmi->cec_dev)
+ 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_bridge_state *old_bridge_state)
{
@@ -1297,28 +1035,6 @@ 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)
{
@@ -1330,21 +1046,13 @@ static void mtk_hdmi_bridge_atomic_pre_enable(struct drm_bridge *bridge,
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, "mediatek", "On-chip 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_bridge_state *old_state)
{
struct drm_atomic_state *state = old_state->base.state;
struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+ u8 buffer_spd[HDMI_INFOFRAME_SIZE(SPD)];
+ u8 buffer_avi[HDMI_INFOFRAME_SIZE(AVI)];

/* Retrieve the connector through the atomic state. */
hdmi->curr_conn = drm_atomic_get_new_connector_for_encoder(state,
@@ -1354,12 +1062,16 @@ static void mtk_hdmi_bridge_atomic_enable(struct drm_bridge *bridge,
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);
+ mtk_hdmi_setup_audio_infoframe(hdmi);
+ mtk_hdmi_send_infoframe(hdmi, buffer_spd, sizeof(buffer_spd),
+ buffer_avi, sizeof(buffer_avi), &hdmi->mode);
+ if (hdmi->mode.flags & DRM_MODE_FLAG_3D_MASK)
+ mtk_hdmi_setup_vendor_specific_infoframe(hdmi, &hdmi->mode);

hdmi->enabled = true;
}

-static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = {
+const struct drm_bridge_funcs mtk_mt8183_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,
@@ -1375,180 +1087,19 @@ static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = {
.edid_read = mtk_hdmi_bridge_edid_read,
};

-static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
- struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node;
- struct device_node *cec_np, *remote, *i2c_np;
- struct platform_device *cec_pdev;
- struct regmap *regmap;
- int ret;
-
- ret = mtk_hdmi_get_all_clk(hdmi, np);
- if (ret) {
- if (ret != -EPROBE_DEFER)
- dev_err(dev, "Failed to get clocks: %d\n", ret);
-
- return ret;
- }
-
- /* The CEC module handles HDMI hotplug detection */
- cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
- if (!cec_np) {
- dev_err(dev, "Failed to find CEC node\n");
- return -EINVAL;
- }
-
- 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);
- hdmi->cec_dev = &cec_pdev->dev;
-
- /*
- * 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.
- */
- regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi");
- ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1,
- &hdmi->sys_offset);
- if (IS_ERR(regmap))
- ret = PTR_ERR(regmap);
- if (ret) {
- dev_err(dev,
- "Failed to get system configuration registers: %d\n",
- ret);
- goto put_device;
- }
- hdmi->sys_regmap = regmap;
-
- hdmi->regs = device_node_to_regmap(dev->of_node);
- if (IS_ERR(hdmi->regs)) {
- ret = PTR_ERR(hdmi->regs);
- goto put_device;
- }
-
- remote = of_graph_get_remote_node(np, 1, 0);
- if (!remote) {
- ret = -EINVAL;
- goto put_device;
- }
-
- 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);
- ret = -EPROBE_DEFER;
- goto put_device;
- }
- }
-
- i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
- if (!i2c_np) {
- dev_err(dev, "Failed to find ddc-i2c-bus node in %pOF\n",
- remote);
- of_node_put(remote);
- ret = -EINVAL;
- goto put_device;
- }
- of_node_put(remote);
-
- hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
- of_node_put(i2c_np);
- if (!hdmi->ddc_adpt) {
- dev_err(dev, "Failed to get ddc i2c adapter by node\n");
- ret = -EINVAL;
- goto put_device;
- }
-
- return 0;
-put_device:
- put_device(hdmi->cec_dev);
- return ret;
-}
-
/*
* HDMI audio codec callbacks
*/
-
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);
- struct hdmi_audio_param hdmi_params;
- 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:
- hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
- break;
- case 4:
- hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0;
- break;
- case 6:
- hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1;
- break;
- case 8:
- hdmi_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:
- hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
- hdmi_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
- hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S;
- hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
- hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS;
- break;
- case HDMI_SPDIF:
- hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
- hdmi_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
- hdmi_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;
+ if (hdmi->audio_enable) {
+ mtk_hdmi_audio_params(hdmi, daifmt, params);
+ mtk_hdmi_aud_output_config(hdmi, &hdmi->mode);
}
-
- memcpy(&hdmi_params.codec_params, params,
- sizeof(hdmi_params.codec_params));
-
- mtk_hdmi_audio_set_param(hdmi, &hdmi_params);
-
return 0;
}

@@ -1582,28 +1133,13 @@ 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 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;

- mutex_lock(&hdmi->update_plugged_status_lock);
- hdmi->plugged_cb = fn;
- hdmi->codec_dev = codec_dev;
- mutex_unlock(&hdmi->update_plugged_status_lock);
-
+ mtk_hdmi_audio_set_plugged_cb(hdmi, fn, codec_dev);
mtk_hdmi_update_plugged_status(hdmi);

return 0;
@@ -1619,165 +1155,85 @@ static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = {
.no_capture_mute = 1,
};

-static int mtk_hdmi_register_audio_driver(struct device *dev)
+static __maybe_unused int mtk_hdmi_suspend(struct device *dev)
{
struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
- struct hdmi_codec_pdata codec_data = {
- .ops = &mtk_hdmi_audio_codec_ops,
- .max_i2s_channels = 2,
- .i2s = 1,
- .data = hdmi,
- };
- struct platform_device *pdev;
-
- pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
- PLATFORM_DEVID_AUTO, &codec_data,
- sizeof(codec_data));
- if (IS_ERR(pdev))
- return PTR_ERR(pdev);
-
- DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME);
+
+ mtk_hdmi_clk_disable_audio(hdmi);
+
return 0;
}

-static int mtk_hdmi_probe(struct platform_device *pdev)
+static __maybe_unused int mtk_hdmi_resume(struct device *dev)
{
- struct mtk_hdmi *hdmi;
- struct device *dev = &pdev->dev;
- int ret;
-
- hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
- if (!hdmi)
- return -ENOMEM;
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);

- hdmi->dev = dev;
- hdmi->conf = of_device_get_match_data(dev);
+ return mtk_hdmi_clk_enable_audio(hdmi);
+}

- ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev);
- if (ret)
- return ret;
+static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops, mtk_hdmi_suspend, mtk_hdmi_resume);

- 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");
+static const struct mtk_hdmi_ver_conf mtk_hdmi_v1_ver_conf = {
+ .bridge_funcs = &mtk_mt8183_hdmi_bridge_funcs,
+ .codec_ops = &mtk_hdmi_audio_codec_ops,
+ .mtk_hdmi_clock_names = mtk_hdmi_clk_names_v1,
+ .num_clocks = ARRAY_SIZE(mtk_hdmi_clk_names_v1)
+};

- mutex_init(&hdmi->update_plugged_status_lock);
- platform_set_drvdata(pdev, hdmi);
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
+ .tz_disabled = true,
+ .ver_conf = &mtk_hdmi_v1_ver_conf
+};

- ret = mtk_hdmi_output_init(hdmi);
- if (ret)
- return dev_err_probe(dev, ret,
- "Failed to initialize hdmi output\n");
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
+ .max_mode_clock = 148500,
+ .cea_modes_only = true,
+ .ver_conf = &mtk_hdmi_v1_ver_conf
+};

- ret = mtk_hdmi_register_audio_driver(dev);
- if (ret)
- return dev_err_probe(dev, ret,
- "Failed to register audio driver\n");
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8173 = {
+ .ver_conf = &mtk_hdmi_v1_ver_conf
+};

- hdmi->bridge.funcs = &mtk_hdmi_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;
- drm_bridge_add(&hdmi->bridge);
+static int mtk_hdmi_probe(struct platform_device *pdev)
+{
+ struct mtk_hdmi *hdmi;

- ret = mtk_hdmi_clk_enable_audio(hdmi);
- if (ret) {
- drm_bridge_remove(&hdmi->bridge);
- return dev_err_probe(dev, ret,
- "Failed to enable audio clocks\n");
- }
+ hdmi = mtk_hdmi_common_probe(pdev);
+ if (IS_ERR(hdmi))
+ return PTR_ERR(hdmi);

- return 0;
+ return mtk_hdmi_clk_enable_audio(hdmi);
}

static void mtk_hdmi_remove(struct platform_device *pdev)
{
struct mtk_hdmi *hdmi = platform_get_drvdata(pdev);

- drm_bridge_remove(&hdmi->bridge);
- mtk_hdmi_clk_disable_audio(hdmi);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int mtk_hdmi_suspend(struct device *dev)
-{
- struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
-
mtk_hdmi_clk_disable_audio(hdmi);
-
- return 0;
-}
-
-static int mtk_hdmi_resume(struct device *dev)
-{
- struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
- int ret = 0;
-
- ret = mtk_hdmi_clk_enable_audio(hdmi);
- if (ret) {
- dev_err(dev, "hdmi resume failed!\n");
- return ret;
- }
-
- return 0;
+ i2c_put_adapter(hdmi->ddc_adpt);
}
-#endif
-static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops,
- mtk_hdmi_suspend, mtk_hdmi_resume);
-
-static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
- .tz_disabled = true,
-};
-
-static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
- .max_mode_clock = 148500,
- .cea_modes_only = true,
-};

-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",
- },
- {}
+static const struct of_device_id mtk_drm_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);
+MODULE_DEVICE_TABLE(of, mtk_drm_hdmi_of_ids);

static struct platform_driver mtk_hdmi_driver = {
.probe = mtk_hdmi_probe,
- .remove_new = mtk_hdmi_remove,
+ .remove = mtk_hdmi_remove,
.driver = {
.name = "mediatek-drm-hdmi",
- .of_match_table = mtk_hdmi_of_ids,
+ .of_match_table = mtk_drm_hdmi_of_ids,
.pm = &mtk_hdmi_pm_ops,
},
};
-
-static struct platform_driver * const mtk_hdmi_drivers[] = {
- &mtk_hdmi_driver,
-};
-
-static int __init mtk_hdmitx_init(void)
-{
- return platform_register_drivers(mtk_hdmi_drivers,
- ARRAY_SIZE(mtk_hdmi_drivers));
-}
-
-static void __exit mtk_hdmitx_exit(void)
-{
- platform_unregister_drivers(mtk_hdmi_drivers,
- ARRAY_SIZE(mtk_hdmi_drivers));
-}
-
-module_init(mtk_hdmitx_init);
-module_exit(mtk_hdmitx_exit);
+module_platform_driver(mtk_hdmi_driver);

MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
+MODULE_AUTHOR("Can Zeng <can.zeng@mediatek.com>");
MODULE_DESCRIPTION("MediaTek HDMI Driver");
MODULE_LICENSE("GPL v2");
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..1b23ab6969ec
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
@@ -0,0 +1,425 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Copyright (c) 2022 BayLibre, SAS
+ * 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 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;
+ }
+
+ if (i == ARRAY_SIZE(hdmi_rec_n_table))
+ return -EINVAL;
+
+ 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);
+}
+
+int mtk_hdmi_get_ncts(unsigned int sample_rate, unsigned int clock,
+ unsigned int *n, unsigned int *cts)
+{
+ int rec_n = hdmi_recommended_n(sample_rate, clock);
+
+ if (rec_n < 0)
+ return rec_n;
+
+ *cts = hdmi_expected_cts(sample_rate, clock, rec_n);
+ *n = rec_n;
+
+ return 0;
+}
+
+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;
+}
+
+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;
+}
+
+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_get_all_clk(struct mtk_hdmi *hdmi, struct device_node *np,
+ const char * const *mtk_hdmi_clk_names, size_t num_clocks)
+{
+ int i;
+
+ for (i = 0; i < num_clocks; i++) {
+ hdmi->clk[i] = of_clk_get_by_name(np, mtk_hdmi_clk_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;
+}
+
+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);
+
+ drm_mode_copy(&hdmi->mode, adjusted_mode);
+}
+
+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, -ENOTSUPP, "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->irq = platform_get_irq(pdev, 0);
+ if (!hdmi->irq)
+ return hdmi->irq;
+
+ 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 dev_err_probe(dev, -EINVAL, "Cannot find HDMI input port\n");
+
+ 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);
+ if (!i2c_np) {
+ of_node_put(pdev->dev.of_node);
+ 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) {
+ dev_err(dev, "Failed to get ddc i2c adapter by node");
+ return -EPROBE_DEFER;
+ }
+
+ ret = mtk_hdmi_get_cec_dev(hdmi, dev, np);
+ if (ret == -ENOTSUPP)
+ dev_info(dev, "CEC support unavailable: node not found\n");
+ else 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 = {
+ .i2s = 1,
+ .max_i2s_channels = 2,
+ .data = hdmi,
+ .ops = hdmi->conf->ver_conf->codec_ops
+ };
+ 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) {
+ platform_device_unregister(hdmi->audio_pdev);
+ 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(&pdev->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);
+
+ 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");
+
+ ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, ver_conf->mtk_hdmi_clock_names,
+ ver_conf->num_clocks);
+ if (ret)
+ return ERR_PTR(ret);
+
+ 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.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_HPD;
+ hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
+ hdmi->bridge.of_node = pdev->dev.of_node;
+
+ ret = devm_drm_bridge_add(dev, &hdmi->bridge);
+ if (ret)
+ return dev_err_ptr_probe(dev, ret, "Failed to add bridge\n");
+
+ return hdmi;
+}
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>");
+MODULE_AUTHOR("Can Zeng <can.zeng@mediatek.com>");
+MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.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..15121e8548f3
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
@@ -0,0 +1,203 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2022 BayLibre, SAS
+ */
+
+#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,
+};
+
+enum hdmi_hpd_state {
+ HDMI_PLUG_OUT = 0,
+ HDMI_PLUG_IN_AND_SINK_POWER_ON,
+ HDMI_PLUG_IN_ONLY,
+};
+
+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 {
+ struct drm_bridge bridge;
+ struct device *dev;
+ const struct mtk_hdmi_conf *conf;
+ struct phy *phy;
+ 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;
+
+ bool powered;
+ bool enabled;
+ unsigned int irq;
+ enum hdmi_hpd_state hpd;
+
+ /* Audio */
+ struct platform_device *audio_pdev;
+ struct hdmi_audio_param aud_param;
+ bool audio_enable;
+
+ struct drm_connector *curr_conn;/* current connector (only valid when 'enabled') */
+ struct mutex update_plugged_status_lock;
+ struct device *cec_dev;
+ struct device *codec_dev;
+ hdmi_codec_plugged_cb plugged_cb;
+ struct drm_bridge *next_bridge;
+};
+
+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;
+ bool hdr_support;
+};
+
+struct mtk_hdmi_conf {
+ const struct mtk_hdmi_ver_conf *ver_conf;
+ bool tz_disabled;
+ bool cea_modes_only;
+ unsigned long max_mode_clock;
+};
+
+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);
+int 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);
+int mtk_drm_hdmi_probe(struct platform_device *pdev);
+int mtk_drm_hdmi_remove(struct platform_device *pdev);
+
+#endif /* _MTK_HDMI_COMMON_H */
--
2.47.0