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authorVijendar Mukunda <vijendar.mukunda@amd.com>2021-07-16 18:00:12 +0530
committerMark Brown <broonie@kernel.org>2021-07-16 13:54:58 +0100
commit59dd33f82dc0975c55d3d46801e7ca45532d7673 (patch)
tree677d5ddee187d73755fc0422428433b223d32a5a
parentASoC: codecs: wcd938x: setup irq during component bind (diff)
downloadlinux-dev-59dd33f82dc0975c55d3d46801e7ca45532d7673.tar.xz
linux-dev-59dd33f82dc0975c55d3d46801e7ca45532d7673.zip
ASoC: soc-pcm: add a flag to reverse the stop sequence
On stream stop, currently CPU DAI stop sequence invoked first followed by DMA. For Few platforms, it is required to stop the DMA first before stopping CPU DAI. Introduced new flag in dai_link structure for reordering stop sequence. Based on flag check, ASoC core will re-order the stop sequence. Fixes: 4378f1fbe92405 ("ASoC: soc-pcm: Use different sequence for start/stop trigger") Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://lore.kernel.org/r/20210716123015.15697-1-vijendar.mukunda@amd.com Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--include/sound/soc.h6
-rw-r--r--sound/soc/soc-pcm.c22
2 files changed, 22 insertions, 6 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 675849d07284..8e6dd8a257c5 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -712,6 +712,12 @@ struct snd_soc_dai_link {
/* Do not create a PCM for this DAI link (Backend link) */
unsigned int ignore:1;
+ /* This flag will reorder stop sequence. By enabling this flag
+ * DMA controller stop sequence will be invoked first followed by
+ * CPU DAI driver stop sequence
+ */
+ unsigned int stop_dma_first:1;
+
#ifdef CONFIG_SND_SOC_TOPOLOGY
struct snd_soc_dobj dobj; /* For topology */
#endif
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 46513bb97904..d1c570ca21ea 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1015,6 +1015,7 @@ out:
static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
int ret = -EINVAL, _ret = 0;
int rollback = 0;
@@ -1055,14 +1056,23 @@ start_err:
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
- if (ret < 0)
- break;
+ if (rtd->dai_link->stop_dma_first) {
+ ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
+ if (ret < 0)
+ break;
- ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
- if (ret < 0)
- break;
+ ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
+ if (ret < 0)
+ break;
+ } else {
+ ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
+ if (ret < 0)
+ break;
+ ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
+ if (ret < 0)
+ break;
+ }
ret = snd_soc_link_trigger(substream, cmd, rollback);
break;
}