diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2018-10-12 09:31:18 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-10-12 19:52:07 +0300 |
| commit | 594680ea4a394f19d38a39a7d7c673fbad02a3d6 (patch) | |
| tree | 93fdeeae67ab6c587509c6b5b5db12ff173773b9 /sound | |
| parent | 3809688980205622f75ed5d5890759430da4e7e4 (diff) | |
| download | linux-594680ea4a394f19d38a39a7d7c673fbad02a3d6.tar.xz | |
ASoC: pcm3168a: add hw constraint for channel
LEFT_J / I2S only can use TDM.
This patch adds channel constraint for it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/pcm3168a.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sound/soc/codecs/pcm3168a.c b/sound/soc/codecs/pcm3168a.c index 233a8df5d7a5..f0e2b886323e 100644 --- a/sound/soc/codecs/pcm3168a.c +++ b/sound/soc/codecs/pcm3168a.c @@ -484,6 +484,7 @@ static int pcm3168a_startup(struct snd_pcm_substream *substream, bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; unsigned int fmt; unsigned int sample_min; + unsigned int channel_max; if (tx) fmt = pcm3168a->dac_fmt; @@ -496,19 +497,38 @@ static int pcm3168a_startup(struct snd_pcm_substream *substream, * RIGHT_J : 24 / 16 * LEFT_J : 24 * I2S : 24 + * + * TDM available + * + * I2S + * LEFT_J */ switch (fmt) { case PCM3168A_FMT_RIGHT_J: sample_min = 16; + channel_max = 2; + break; + case PCM3168A_FMT_LEFT_J: + sample_min = 24; + channel_max = 8; + break; + case PCM3168A_FMT_I2S: + sample_min = 24; + channel_max = 8; break; default: sample_min = 24; + channel_max = 2; } snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, sample_min, 32); + snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_CHANNELS, + 2, channel_max); + return 0; } static const struct snd_soc_dai_ops pcm3168a_dac_dai_ops = { |