diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-11-30 17:38:58 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-12-02 11:27:14 +0000 |
| commit | 62e5f676f6a063e1ab0d6b8fcaef2feb026ee00e (patch) | |
| tree | 16ac40c1babf3e1d18399fc0d35f8464f8a06e6b /sound/soc | |
| parent | d3383420c969c25deffd33270ebe321e8401191a (diff) | |
ASoC: Set SNDRV_PCM_INFO_JOINT_DUPLEX for PCMs with symmetry constraints
If there are symmetry constraints between the playback and the capture channel
set the SNDRV_PCM_INFO_JOINT_DUPLEX flag to let userspace know about this.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/soc-pcm.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 170ff969575..f3592f14283 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -180,6 +180,21 @@ static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, return 0; } +static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver; + struct snd_soc_dai_driver *codec_driver = rtd->codec_dai->driver; + struct snd_soc_dai_link *link = rtd->dai_link; + + return cpu_driver->symmetric_rates || codec_driver->symmetric_rates || + link->symmetric_rates || cpu_driver->symmetric_channels || + codec_driver->symmetric_channels || link->symmetric_channels || + cpu_driver->symmetric_samplebits || + codec_driver->symmetric_samplebits || + link->symmetric_samplebits; +} + /* * List of sample sizes that might go over the bus for parameter * application. There ought to be a wildcard sample size for things @@ -309,6 +324,9 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) &cpu_dai_drv->capture); } + if (soc_pcm_has_symmetry(substream)) + runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; + ret = -EINVAL; snd_pcm_limit_hw_rates(runtime); if (!runtime->hw.rates) { |