Initially we only going to care about the slot_width as for example DSP_A/B needs 32 bclk per slots and to be able to use TDM mode the codec (and CPU) needs to use DSP_A/B modes.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- sound/soc/codecs/pcm3168a.c | 60 ++++++++++++++++++++++++++++++++----- 1 file changed, 52 insertions(+), 8 deletions(-)
diff --git a/sound/soc/codecs/pcm3168a.c b/sound/soc/codecs/pcm3168a.c index e0d5839fe1a7..9eb24ca09793 100644 --- a/sound/soc/codecs/pcm3168a.c +++ b/sound/soc/codecs/pcm3168a.c @@ -56,6 +56,9 @@ struct pcm3168a_priv { unsigned long sysclk; unsigned int adc_fmt; unsigned int dac_fmt; + int tdm_slots; + u32 tdm_mask[2]; + int slot_width; };
static const char *const pcm3168a_roll_off[] = { "Sharp", "Slow" }; @@ -387,6 +390,41 @@ static int pcm3168a_set_dai_fmt_adc(struct snd_soc_dai *dai, return pcm3168a_set_dai_fmt(dai, format, false); }
+static int pcm3168a_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, + unsigned int rx_mask, int slots, + int slot_width) +{ + struct snd_soc_component *component = dai->component; + struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component); + + if (tx_mask >= (1<<slots) || rx_mask >= (1<<slots)) { + dev_err(component->dev, + "Bad tdm mask tx: 0x%08x rx: 0x%08x slots %d\n", + tx_mask, rx_mask, slots); + return -EINVAL; + } + + if (slot_width && + (slot_width != 16 && slot_width != 24 && slot_width != 32 )) { + dev_err(component->dev, "Unsupported slot_width %d\n", + slot_width); + return -EINVAL; + } + + pcm3168a->tdm_slots = slots; + pcm3168a->tdm_mask[SNDRV_PCM_STREAM_PLAYBACK] = tx_mask; + pcm3168a->tdm_mask[SNDRV_PCM_STREAM_CAPTURE] = rx_mask; + + if (pcm3168a->slot_width && pcm3168a->slot_width != slot_width) { + dev_err(component->dev, "Not matching slot_width %d vs %d\n", + pcm3168a->slot_width, slot_width); + return -EINVAL; + } + + pcm3168a->slot_width = slot_width; + return 0; +} + static int pcm3168a_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) @@ -431,22 +469,26 @@ static int pcm3168a_hw_params(struct snd_pcm_substream *substream, return -EINVAL; }
- min_frame_size = params_width(params) * 2; + if (pcm3168a->slot_width) + min_frame_size = pcm3168a->slot_width; + else + min_frame_size = params_width(params); + switch (min_frame_size) { - case 32: + case 16: if (master_mode || (fmt != PCM3168A_FMT_RIGHT_J)) { - dev_err(component->dev, "32-bit frames are supported only for slave mode using right justified\n"); + dev_err(component->dev, "16-bit slots are supported only for slave mode using right justified\n"); return -EINVAL; } fmt = PCM3168A_FMT_RIGHT_J_16; break; - case 48: + case 24: if (master_mode || (fmt & PCM3168A_FMT_DSP_MASK)) { - dev_err(component->dev, "48-bit frames not supported in master mode, or slave mode using DSP\n"); + dev_err(component->dev, "24-bit slots not supported in master mode, or slave mode using DSP\n"); return -EINVAL; } break; - case 64: + case 32: break; default: dev_err(component->dev, "unsupported frame size: %d\n", min_frame_size); @@ -554,14 +596,16 @@ static const struct snd_soc_dai_ops pcm3168a_dac_dai_ops = { .set_fmt = pcm3168a_set_dai_fmt_dac, .set_sysclk = pcm3168a_set_dai_sysclk, .hw_params = pcm3168a_hw_params, - .digital_mute = pcm3168a_digital_mute + .digital_mute = pcm3168a_digital_mute, + .set_tdm_slot = pcm3168a_set_tdm_slot, };
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 + .hw_params = pcm3168a_hw_params, + .set_tdm_slot = pcm3168a_set_tdm_slot, };
static struct snd_soc_dai_driver pcm3168a_dais[] = {