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 |\