[PATCH AUTOSEL 5.7 362/388] ASoC: soc-pcm: dpcm: fix playback/capture checks

Sasha Levin
2020-06-18T01:18:55Z

From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

[ Upstream commit b73287f0b0745961b14e5ebcce92cc8ed24d4d52 ]

Recent changes in the ASoC core prevent multi-cpu BE dailinks from
being used. DPCM does support multi-cpu DAIs for BE Dailinks, but not
for FE.

Handle the FE checks first, and make sure all DAIs support the same
capabilities within the same dailink.

Fixes: 9b5db059366ae2 ("ASoC: soc-pcm: dpcm: Only allow playback/capture if supported")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@gmail.com>
BugLink: https://github.com/thesofproject/linux/issues/2031
Link: https://lore.kernel.org/r/20200608194415.4663-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/soc-pcm.c | 44 ++++++++++++++++++++++++++++++++++----------
1 file changed, 34 insertions(+), 10 deletions(-)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 1f302de44052..39ce61c5b874 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2908,20 +2908,44 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
struct snd_pcm *pcm;
char new_name[64];
int ret = 0, playback = 0, capture = 0;
+ int stream;
int i;

+ if (rtd->dai_link->dynamic && rtd->num_cpus > 1) {
+ dev_err(rtd->dev,
+ "DPCM doesn't support Multi CPU for Front-Ends yet\n");
+ return -EINVAL;
+ }
+
if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
- cpu_dai = asoc_rtd_to_cpu(rtd, 0);
- if (rtd->num_cpus > 1) {
- dev_err(rtd->dev,
- "DPCM doesn't support Multi CPU yet\n");
- return -EINVAL;
+ if (rtd->dai_link->dpcm_playback) {
+ stream = SNDRV_PCM_STREAM_PLAYBACK;
+
+ for_each_rtd_cpu_dais(rtd, i, cpu_dai)
+ if (!snd_soc_dai_stream_valid(cpu_dai,
+ stream)) {
+ dev_err(rtd->card->dev,
+ "CPU DAI %s for rtd %s does not support playback\n",
+ cpu_dai->name,
+ rtd->dai_link->stream_name);
+ return -EINVAL;
+ }
+ playback = 1;
+ }
+ if (rtd->dai_link->dpcm_capture) {
+ stream = SNDRV_PCM_STREAM_CAPTURE;
+
+ for_each_rtd_cpu_dais(rtd, i, cpu_dai)
+ if (!snd_soc_dai_stream_valid(cpu_dai,
+ stream)) {
+ dev_err(rtd->card->dev,
+ "CPU DAI %s for rtd %s does not support capture\n",
+ cpu_dai->name,
+ rtd->dai_link->stream_name);
+ return -EINVAL;
+ }
+ capture = 1;
}
-
- playback = rtd->dai_link->dpcm_playback &&
- snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK);
- capture = rtd->dai_link->dpcm_capture &&
- snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE);
} else {
/* Adapt stream for codec2codec links */
int cpu_capture = rtd->dai_link->params ?
--
2.25.1