HDMI codec may be also interested in PCM triggers. Add PCM trigger
operator.
Signed-off-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>
---
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 |\
--
2.23.0.866.gb869b98d4c-goog
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