diff options
Diffstat (limited to 'sound/soc/codecs/pcm3168a.c')
| -rw-r--r-- | sound/soc/codecs/pcm3168a.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sound/soc/codecs/pcm3168a.c b/sound/soc/codecs/pcm3168a.c index 3356c91f55b0..52cc950c9fd1 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 @@ -476,7 +495,69 @@ 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; + unsigned int channel_max; + + if (tx) + fmt = pcm3168a->dac_fmt; + else + fmt = pcm3168a->adc_fmt; + + /* + * Available Data Bits + * + * 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; + if (tx) + channel_max = 8; + else + channel_max = 6; + break; + case PCM3168A_FMT_I2S: + sample_min = 24; + if (tx) + channel_max = 8; + else + channel_max = 6; + 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 = { + .startup = pcm3168a_startup, .set_fmt = pcm3168a_set_dai_fmt_dac, .set_sysclk = pcm3168a_set_dai_sysclk, .hw_params = pcm3168a_hw_params, @@ -484,6 +565,7 @@ static const struct snd_soc_dai_ops pcm3168a_dac_dai_ops = { }; static const struct snd_soc_dai_ops pcm3168a_adc_dai_ops = { + .startup = pcm3168a_startup, .set_fmt = pcm3168a_set_dai_fmt_adc, .set_sysclk = pcm3168a_set_dai_sysclk, .hw_params = pcm3168a_hw_params |