[PATCH 4.19 119/346] ASoC: pcm: DRAIN support reactivation

Greg Kroah-Hartman
2020-12-28T13:26:21Z

From: Cezary Rojewski <cezary.rojewski@intel.com>

[ Upstream commit 4c22b80f61540ea99d9b4af0127315338755f05b ]

soc-pcm's dpcm_fe_dai_do_trigger() supported DRAIN commnad up to kernel
v5.4 where explicit switch(cmd) has been introduced which takes into
account all SNDRV_PCM_TRIGGER_xxx but SNDRV_PCM_TRIGGER_DRAIN. Update
switch statement to reactive support for it.

As DRAIN is somewhat unique by lacking negative/stop counterpart, bring
behaviour of dpcm_fe_dai_do_trigger() for said command back to its
pre-v5.4 state by adding it to START/RESUME/PAUSE_RELEASE group.

Fixes: acbf27746ecf ("ASoC: pcm: update FE/BE trigger order based on the command")
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20201026100129.8216-1-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/soc-pcm.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index a0d1ce0edaf9a..af14304645ce8 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2390,6 +2390,7 @@ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_DRAIN:
ret = dpcm_dai_trigger_fe_be(substream, cmd, true);
break;
case SNDRV_PCM_TRIGGER_STOP:
@@ -2407,6 +2408,7 @@ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_DRAIN:
ret = dpcm_dai_trigger_fe_be(substream, cmd, false);
break;
case SNDRV_PCM_TRIGGER_STOP:
--
2.27.0