From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
LEFT_J / I2S only can use TDM. This patch adds channel constraint for it.
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- sound/soc/codecs/pcm3168a.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/sound/soc/codecs/pcm3168a.c b/sound/soc/codecs/pcm3168a.c index 233a8df5..f0e2b88 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 = {