Add audio abort() callback, that is provided at audio stream start,
for video side. This is for video side to use in case there is a
pressing need to tear down the audio playback for some reason.
Signed-off-by: Jyri Sarha <jsarha@xxxxxx>
---
include/sound/hdmi-codec.h | 8 ++++++--
sound/soc/codecs/hdmi-codec.c | 20 +++++++++++++++++++-
2 files changed, 25 insertions(+), 3 deletions(-)
diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index fc3a481..15fe70f 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -55,10 +55,14 @@ struct hdmi_codec_params {
struct hdmi_codec_ops {
/*
- * Called when ASoC starts an audio stream setup.
+ * Called when ASoC starts an audio stream setup. The call
+ * provides an audio abort callback for stoping an ongoing
+ * stream from video side driver if the HDMI audio becomes
+ * unavailable.
* Optional
*/
- int (*audio_startup)(struct device *dev);
+ int (*audio_startup)(struct device *dev,
+ void (*abort_cb)(struct device *dev));
/*
* Configures HDMI-encoder for audio stream.
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index bc47b9a..cc08097 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -47,6 +47,23 @@ enum {
DAI_ID_SPDIF,
};
+static void hdmi_codec_abort(struct device *dev)
+{
+ struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "%s()\n", __func__);
+
+ mutex_lock(&hcp->current_stream_lock);
+ if (hcp->current_stream && hcp->current_stream->runtime &&
+ snd_pcm_running(hcp->current_stream)) {
+ dev_info(dev, "HDMI audio playback aborted\n");
+ snd_pcm_stream_lock_irq(hcp->current_stream);
+ snd_pcm_stop(hcp->current_stream, SNDRV_PCM_STATE_DISCONNECTED);
+ snd_pcm_stream_unlock_irq(hcp->current_stream);
+ }
+ mutex_unlock(&hcp->current_stream_lock);
+}
+
static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
@@ -78,7 +95,8 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
return ret;
if (hcp->hcd.ops->audio_startup) {
- ret = hcp->hcd.ops->audio_startup(dai->dev->parent);
+ ret = hcp->hcd.ops->audio_startup(dai->dev->parent,
+ hdmi_codec_abort);
if (ret) {
mutex_lock(&hcp->current_stream_lock);
hcp->current_stream = NULL;
--
1.9.1
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