Hi Tzung-Bi,
We would want to confirm with you as we work on the hdmi-codec for the mt8186.
Do you have any plan to continue working on this series? We may take over as well.
Thanks, Allen
On Tue, 2019-10-22 at 19:45 +0800, Tzung-Bi Shih wrote:
HDMI codec may be also interested in PCM triggers. Add PCM trigger operator.
Signed-off-by: Tzung-Bi Shih tzungbi@google.com
include/sound/hdmi-codec.h | 13 +++++++++++++ sound/soc/codecs/hdmi-codec.c | 31 +++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+)
diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h index 83b17682e01c..9de462ef170d 100644 --- a/include/sound/hdmi-codec.h +++ b/include/sound/hdmi-codec.h @@ -50,6 +50,13 @@ struct hdmi_codec_params { typedef void (*hdmi_codec_plugged_cb)(struct device *dev, bool plugged);
+enum { +HDMI_CODEC_TRIGGER_EVENT_STOP, +HDMI_CODEC_TRIGGER_EVENT_START, +HDMI_CODEC_TRIGGER_EVENT_SUSPEND, +HDMI_CODEC_TRIGGER_EVENT_RESUME, +};
struct hdmi_codec_pdata; struct hdmi_codec_ops { /* @@ -66,6 +73,12 @@ struct hdmi_codec_ops { struct hdmi_codec_daifmt *fmt, struct hdmi_codec_params *hparms);
+/*
- PCM trigger callback.
- Optional
- */
+int (*trigger)(struct device *dev, int event);
/*
- Shuts down the audio stream.
- Mandatory
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi- codec.c index b5fd8f08726e..1ba2fa26ba03 100644 --- a/sound/soc/codecs/hdmi-codec.c +++ b/sound/soc/codecs/hdmi-codec.c @@ -565,12 +565,42 @@ static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute) return 0; }
+static int hdmi_codec_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)+{ +struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); +int event;
+if (!hcp->hcd.ops->trigger) +return 0;
+switch (cmd) { +case SNDRV_PCM_TRIGGER_STOP: +event = HDMI_CODEC_TRIGGER_EVENT_STOP; +break; +case SNDRV_PCM_TRIGGER_START: +event = HDMI_CODEC_TRIGGER_EVENT_START; +break; +case SNDRV_PCM_TRIGGER_SUSPEND: +event = HDMI_CODEC_TRIGGER_EVENT_SUSPEND; +break; +case SNDRV_PCM_TRIGGER_RESUME: +event = HDMI_CODEC_TRIGGER_EVENT_RESUME; +break; +default: +return -EINVAL; +}
+return hcp->hcd.ops->trigger(dai->dev->parent, event); +}
static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = { .startup= hdmi_codec_startup, .shutdown= hdmi_codec_shutdown, .hw_params= hdmi_codec_hw_params, .set_fmt= hdmi_codec_i2s_set_fmt, .digital_mute= hdmi_codec_digital_mute, +.trigger= hdmi_codec_trigger, };
static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = { @@ -578,6 +608,7 @@ static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = { .shutdown= hdmi_codec_shutdown, .hw_params= hdmi_codec_hw_params, .digital_mute= hdmi_codec_digital_mute, +.trigger= hdmi_codec_trigger, };
#define HDMI_RATES(SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
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