Add HDMI audio support for mt8195
Signed-off-by: Guillaume Ranquet <granq...@baylibre.com>
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c
b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c
index 39e07a6dd490..bb7593ea4c86 100644
--- a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c
@@ -215,6 +215,26 @@ static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi,
bool black)
mtk_hdmi_mask(hdmi, TOP_VMUTE_CFG1, 0, REG_VMUTE_EN);
}
+static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi)
+{
+ u32 val;
+
+ val = mtk_hdmi_read(hdmi, AIP_CTRL, &val);
+
+ if (val & DSD_EN)
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL,
+ DSD_MUTE_DATA | AUD_MUTE_FIFO_EN,
+ DSD_MUTE_DATA | AUD_MUTE_FIFO_EN);
+ else
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, AUD_MUTE_FIFO_EN,
+ AUD_MUTE_FIFO_EN);
+}
+
+static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, AUD_MUTE_DIS, AUD_MUTE_FIFO_EN);
+}
+
static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi)
{
mtk_hdmi_mask(hdmi, HDMITX_CONFIG, 0x0 << HDMITX_SW_RSTB_SHIFT,
@@ -899,6 +919,7 @@ static void mtk_hdmi_audio_reset(struct mtk_hdmi *hdmi,
bool rst)
static void mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi,
struct drm_display_mode *display_mode)
{
+ mtk_hdmi_hw_aud_mute(hdmi);
mtk_hdmi_aud_enable_packet(hdmi, false);
mtk_hdmi_audio_reset(hdmi, true);
mtk_hdmi_aip_ctrl_init(hdmi);
@@ -911,6 +932,7 @@ static void mtk_hdmi_aud_output_config(struct mtk_hdmi
*hdmi,
usleep_range(25, 50);
mtk_hdmi_aud_on_off_hw_ncts(hdmi, true);
mtk_hdmi_aud_enable_packet(hdmi, true);
+ mtk_hdmi_hw_aud_unmute(hdmi);
}
void mtk_hdmi_output_init_mt8195(struct mtk_hdmi *hdmi)
@@ -945,6 +967,28 @@ static void mtk_hdmi_reset_colorspace_setting(struct
mtk_hdmi *hdmi)
hdmi->ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
}
+static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_aud_enable_packet(hdmi, true);
+ hdmi->audio_enable = true;
+}
+
+static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_aud_enable_packet(hdmi, false);
+ hdmi->audio_enable = false;
+}
+
+static void mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi,
+ struct hdmi_audio_param *param)
+{
+ if (!hdmi->audio_enable)
+ return;
+
+ memcpy(&hdmi->aud_param, param, sizeof(*param));
+ mtk_hdmi_aud_output_config(hdmi, &hdmi->mode);
+}
+
static void mtk_hdmi_change_video_resolution(struct mtk_hdmi *hdmi)
{
bool is_over_340M = false;
@@ -965,6 +1009,7 @@ static void mtk_hdmi_change_video_resolution(struct
mtk_hdmi *hdmi)
usleep_range(5, 10);
mtk_hdmi_hw_vid_black(hdmi, true);
+ mtk_hdmi_hw_aud_mute(hdmi);
mtk_hdmi_hw_send_av_unmute(hdmi);
mtk_hdmi_mask(hdmi, TOP_CFG01, NULL_PKT_VSYNC_HIGH_EN,
@@ -1295,12 +1340,21 @@ static void mtk_hdmi_bridge_disable(struct drm_bridge
*bridge,
mtk_hdmi_hw_send_av_mute(hdmi);
usleep_range(50000, 50050);
mtk_hdmi_hw_vid_black(hdmi, true);
+ mtk_hdmi_hw_aud_mute(hdmi);
mtk_hdmi_disable_hdcp_encrypt(hdmi);
usleep_range(50000, 50050);
hdmi->enabled = false;
}
+static void mtk_hdmi_handle_plugged_change(struct mtk_hdmi *hdmi, bool plugged)
+{
+ mutex_lock(&hdmi->update_plugged_status_lock);
+ if (hdmi->plugged_cb && hdmi->codec_dev)
+ hdmi->plugged_cb(hdmi->codec_dev, plugged);
+ mutex_unlock(&hdmi->update_plugged_status_lock);
+}
+
static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge,
struct drm_bridge_state *old_state)
{
@@ -1314,6 +1368,9 @@ static void mtk_hdmi_bridge_post_disable(struct
drm_bridge *bridge,
hdmi->powered = false;
mtk_hdmi_reset_colorspace_setting(hdmi);
+
+ /* signal the disconnect event to audio codec */
+ mtk_hdmi_handle_plugged_change(hdmi, false);
}
static void mtk_hdmi_bridge_pre_enable(struct drm_bridge *bridge,
@@ -1346,6 +1403,10 @@ static void mtk_hdmi_bridge_enable(struct drm_bridge
*bridge,
mtk_hdmi_hw_avi_infoframe(hdmi, buffer_avi, sizeof(buffer_avi));
mtk_hdmi_hw_vid_black(hdmi, false);
+ mtk_hdmi_hw_aud_unmute(hdmi);
+
+ /* signal the connect event to audio codec */
+ mtk_hdmi_handle_plugged_change(hdmi, true);
hdmi->enabled = true;
}
@@ -1385,3 +1446,155 @@ const struct drm_bridge_funcs
mtk_mt8195_hdmi_bridge_funcs = {
.get_edid = mtk_hdmi_bridge_get_edid,
.detect = mtk_hdmi_bridge_detect,
};
+
+static void mtk_hdmi_set_plugged_cb(struct mtk_hdmi *hdmi,
+ hdmi_codec_plugged_cb fn,
+ struct device *codec_dev)
+{
+ bool plugged;
+
+ mutex_lock(&hdmi->update_plugged_status_lock);
+ hdmi->plugged_cb = fn;
+ hdmi->codec_dev = codec_dev;
+ plugged = (hdmi->hpd == HDMI_PLUG_IN_AND_SINK_POWER_ON) ? true : false;
+ mutex_unlock(&hdmi->update_plugged_status_lock);
+
+ mtk_hdmi_handle_plugged_change(hdmi, plugged);
+}
+
+/*
+ * HDMI audio codec callbacks
+ */
+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 = dev_get_drvdata(dev);
+
+ if (!hdmi)
+ return -ENODEV;
+
+ mtk_hdmi_set_plugged_cb(hdmi, fn, codec_dev);
+ 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);
+ struct hdmi_audio_param hdmi_params;
+ unsigned int chan = params->cea.channels;
+
+ 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:
+ return -EINVAL;
+ }
+
+ switch (params->sample_rate) {
+ case 32000:
+ case 44100:
+ case 48000:
+ case 88200:
+ case 96000:
+ case 176400:
+ case 192000:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (daifmt->fmt) {
+ case HDMI_I2S:
+ hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+ hdmi_params.aud_sampe_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;
+ default:
+ return -EINVAL;
+ }
+
+ memcpy(&hdmi_params.codec_params, params,
+ sizeof(hdmi_params.codec_params));
+
+ mtk_hdmi_audio_set_param(hdmi, &hdmi_params);
+
+ 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 (direction != SNDRV_PCM_STREAM_PLAYBACK)
+ return 0;
+
+ 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->conn.eld, min(sizeof(hdmi->conn.eld), len));
+ else
+ memset(buf, 0, len);
+ 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,
+};
+
+void set_hdmi_codec_pdata_mt8195(struct hdmi_codec_pdata *codec_data)
+{
+ codec_data->ops = &mtk_hdmi_audio_codec_ops;
+ codec_data->max_i2s_channels = 2;
+ codec_data->i2s = 1;
+}
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h
b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h
index f59aea51dc74..22af64916219 100644
--- a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h
+++ b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h
@@ -9,6 +9,7 @@
#include <linux/hdmi.h>
#include <drm/drm_bridge.h>
+#include <sound/hdmi-codec.h>
struct mtk_hdmi;
@@ -17,6 +18,7 @@ extern const struct drm_bridge_funcs
mtk_mt8195_hdmi_bridge_funcs;
void mtk_hdmi_output_init_mt8195(struct mtk_hdmi *hdmi);
int mtk_hdmi_clk_enable_mt8195(struct mtk_hdmi *hdmi);
void mtk_hdmi_clk_disable_mt8195(struct mtk_hdmi *hdmi);
+void set_hdmi_codec_pdata_mt8195(struct hdmi_codec_pdata *codec_data);
enum mtk_hdmi_clk_id_mt8195 {
MTK_MT8195_HDIM_HDCP_SEL,
--
b4 0.10.0-dev
