diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2018-10-12 06:31:00 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-10-12 18:52:06 +0200 |
| commit | 3809688980205622f75ed5d5890759430da4e7e4 (patch) | |
| tree | 06e290e243c400e56ec7ec587d5f1cddae2743be /sound | |
| parent | a23f5dc8448694a0ffe2127a04aa5787b9cf9e5f (diff) | |
| download | linux-3809688980205622f75ed5d5890759430da4e7e4.tar.gz | |
ASoC: pcm3168a: add HW constraint for non RIGHT_J
RIGHT_J only can handle 16bit data bits.
Current driver just errored if user requests non RIGHT_J
+ 16bit combination. But it is not useful for user.
This patch adds HW constraint for it, and avoid
error on such situation.
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 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sound/soc/codecs/pcm3168a.c b/sound/soc/codecs/pcm3168a.c index 3356c91f55b0..233a8df5d7a5 100644 --- a/sound/soc/codecs/pcm3168a.c +++ b/sound/soc/codecs/pcm3168a.c @@ -476,7 +476,43 @@ static int pcm3168a_hw_params(struct snd_pcm_substream *substream, return 0; } +static int pcm3168a_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component); + bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + unsigned int fmt; + unsigned int sample_min; + + if (tx) + fmt = pcm3168a->dac_fmt; + else + fmt = pcm3168a->adc_fmt; + + /* + * Available Data Bits + * + * RIGHT_J : 24 / 16 + * LEFT_J : 24 + * I2S : 24 + */ + switch (fmt) { + case PCM3168A_FMT_RIGHT_J: + sample_min = 16; + break; + default: + sample_min = 24; + } + + snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_SAMPLE_BITS, + sample_min, 32); + + return 0; +} static const struct snd_soc_dai_ops pcm3168a_dac_dai_ops = { + .startup = pcm3168a_startup, .set_fmt = pcm3168a_set_dai_fmt_dac, .set_sysclk = pcm3168a_set_dai_sysclk, .hw_params = pcm3168a_hw_params, |