diff options
| author |   Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2018-10-12 06:31:49 +0000 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2018-10-12 18:52:08 +0200 |
| commit | 471a7ba89158c6d52dae69636c94c4aa1a6b7b22 (patch) | |
| tree | 0f9aec9ae11063416ecd4ed98159466b8ec6de74 /sound | |
| parent | ASoC: pcm3168a: add hw constraint for channel (diff) | |
| download | linux-dev-471a7ba89158c6d52dae69636c94c4aa1a6b7b22.tar.xz linux-dev-471a7ba89158c6d52dae69636c94c4aa1a6b7b22.zip | |
ASoC: pcm3168a: add I2S/Left_J TDM support
pcm3168a is supporting TDM on I2S/Left_J, but there is no
settings for it. This patch add 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 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sound/soc/codecs/pcm3168a.c b/sound/soc/codecs/pcm3168a.c index f0e2b886323e..63aa02592bc0 100644 --- a/sound/soc/codecs/pcm3168a.c +++ b/sound/soc/codecs/pcm3168a.c @@ -33,6 +33,8 @@ #define PCM3168A_FMT_RIGHT_J_16 0x3 #define PCM3168A_FMT_DSP_A 0x4 #define PCM3168A_FMT_DSP_B 0x5 +#define PCM3168A_FMT_I2S_TDM 0x6 +#define PCM3168A_FMT_LEFT_J_TDM 0x7 #define PCM3168A_FMT_DSP_MASK 0x4 #define PCM3168A_NUM_SUPPLIES 6 @@ -401,9 +403,11 @@ static int pcm3168a_hw_params(struct snd_pcm_substream *substream, bool tx, master_mode; u32 val, mask, shift, reg; unsigned int rate, fmt, ratio, max_ratio; + unsigned int chan; int i, min_frame_size; rate = params_rate(params); + chan = params_channels(params); ratio = pcm3168a->sysclk / rate; @@ -456,6 +460,21 @@ static int pcm3168a_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } + /* for TDM */ + if (chan > 2) { + switch (fmt) { + case PCM3168A_FMT_I2S: + fmt = PCM3168A_FMT_I2S_TDM; + break; + case PCM3168A_FMT_LEFT_J: + fmt = PCM3168A_FMT_LEFT_J_TDM; + break; + default: + dev_err(component->dev, "TDM is supported under I2S/Left_J only\n"); + return -EINVAL; + } + } + if (master_mode) val = ((i + 1) << shift); else |