renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-23 14:13:58 +08:00
Code

ASoC: soc-pcm: add a flag to reverse the stop sequence

Browse Source 
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: 4378f1fbe9 ("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>
This commit is contained in:
Vijendar Mukunda 2021-07-16 18:00:12 +05:30 committed by Mark Brown
parent f99986c0fc
commit 59dd33f82d
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 22 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/sound/soc.h
View File

@ -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

22
sound/soc/soc-pcm.c
View File

@ -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;
}