[PATCH v8 3/6] ASoC: hdmi-codec: Add audio abort() callback for video side to use
From: Jyri Sarha <hidden>
Date: 2016-03-17 12:22:31
Also in:
alsa-devel, dri-devel, linux-omap
Subsystem:
sound, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Linus Torvalds
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 <redacted> --- 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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