The speaker and hdmi of mt8186 platform are shared the same port of I2S,
when connect the external display, use build-in speakers to play audio,
they both playback at the same time. So we want to manage the playback
device through DAPM events.
Change since v1:
Support audio function for it6505 bridge to hdmi-codec
Jiaxin Yu (3):
ASoC: hdmi-codec: Add event handler for hdmi TX
ASoC: mediatek: mt8186: correct the HDMI widgets
drm/bridge: it6505: Add audio support
drivers/gpu/drm/bridge/ite-it6505.c | 81 +++++++++++++++++--
include/sound/hdmi-codec.h | 6 ++
sound/soc/codecs/hdmi-codec.c | 37 ++++++++-
.../mt8186/mt8186-mt6366-da7219-max98357.c | 2 +-
.../mt8186/mt8186-mt6366-rt1019-rt5682s.c | 2 +-
5 files changed, 116 insertions(+), 12 deletions(-)
--
2.18.0
Add audio support for it6505
1. Bridge to hdmi-codec to support audio feature. At the same time,
the function of automatically detecting audio is removed.
2. It is observed that some DP-to-HDMI dongles will get into bad
states if sending InfoFrame without audio data. Defer to enable
it6505's audio feature when PCM triggers START or RESUME.
Signed-off-by: Jiaxin Yu <[email protected]>
---
drivers/gpu/drm/bridge/ite-it6505.c | 81 ++++++++++++++++++++++++++---
1 file changed, 75 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index dfe4351c9bdd..1f1f37b3df83 100644
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -2159,7 +2159,6 @@ static void it6505_stop_link_train(struct it6505 *it6505)
static void it6505_link_train_ok(struct it6505 *it6505)
{
- struct device *dev = &it6505->client->dev;
it6505->link_state = LINK_OK;
/* disalbe mute enable avi info frame */
@@ -2167,11 +2166,6 @@ static void it6505_link_train_ok(struct it6505 *it6505)
it6505_set_bits(it6505, REG_INFOFRAME_CTRL,
EN_VID_CTRL_PKT, EN_VID_CTRL_PKT);
- if (it6505_audio_input(it6505)) {
- DRM_DEV_DEBUG_DRIVER(dev, "Enable audio!");
- it6505_enable_audio(it6505);
- }
-
if (it6505->hdcp_desired)
it6505_start_hdcp(it6505);
}
@@ -2823,6 +2817,45 @@ static void __maybe_unused it6505_audio_shutdown(struct device *dev, void *data)
it6505_disable_audio(it6505);
}
+static int it6505_audio_hw_params(struct device *dev, void *data,
+ struct hdmi_codec_daifmt *daifmt,
+ struct hdmi_codec_params *params)
+{
+ struct it6505 *it6505 = dev_get_drvdata(dev);
+
+ return it6505_audio_setup_hw_params(it6505, params);
+}
+
+static int it6505_audio_setup_trigger(struct it6505 *it6505, int cmd)
+{
+ struct device *dev = &it6505->client->dev;
+
+ DRM_DEV_DEBUG_DRIVER(dev, "event: %d", cmd);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ queue_delayed_work(system_wq, &it6505->delayed_audio,
+ msecs_to_jiffies(180));
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ cancel_delayed_work(&it6505->delayed_audio);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int it6505_audio_trigger(struct device *dev, int cmd)
+{
+ struct it6505 *it6505 = dev_get_drvdata(dev);
+
+ return it6505_audio_setup_trigger(it6505, cmd);
+}
+
static int __maybe_unused it6505_audio_hook_plugged_cb(struct device *dev,
void *data,
hdmi_codec_plugged_cb fn,
@@ -2837,6 +2870,36 @@ static int __maybe_unused it6505_audio_hook_plugged_cb(struct device *dev,
return 0;
}
+static const struct hdmi_codec_ops it6505_audio_codec_ops = {
+ .hw_params = it6505_audio_hw_params,
+ .trigger = it6505_audio_trigger,
+ .audio_shutdown = it6505_audio_shutdown,
+ .hook_plugged_cb = it6505_audio_hook_plugged_cb,
+};
+
+static int it6505_register_audio_driver(struct device *dev)
+{
+ struct it6505 *it6505 = dev_get_drvdata(dev);
+ struct hdmi_codec_pdata codec_data = {
+ .ops = &it6505_audio_codec_ops,
+ .max_i2s_channels = 8,
+ .i2s = 1,
+ .data = it6505,
+ };
+ 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);
+
+ INIT_DELAYED_WORK(&it6505->delayed_audio, it6505_delayed_audio);
+ DRM_DEV_DEBUG_DRIVER(dev, "bound to %s", HDMI_CODEC_DRV_NAME);
+
+ return 0;
+}
+
static inline struct it6505 *bridge_to_it6505(struct drm_bridge *bridge)
{
return container_of(bridge, struct it6505, bridge);
@@ -3302,6 +3365,12 @@ static int it6505_i2c_probe(struct i2c_client *client,
return err;
}
+ err = it6505_register_audio_driver(dev);
+ if (err < 0) {
+ DRM_DEV_ERROR(dev, "Failed to register audio driver: %d", err);
+ return err;
+ }
+
INIT_WORK(&it6505->link_works, it6505_link_training_work);
INIT_WORK(&it6505->hdcp_wait_ksv_list, it6505_hdcp_wait_ksv_list);
INIT_DELAYED_WORK(&it6505->hdcp_work, it6505_hdcp_work);
--
2.18.0