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ASoC: pcm3168a: Implement set_tdm_slot callback 

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>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2019-06-04 14:12:49 +03:00 committed by Mark Brown
parent 52194513ba
commit 9b8e8b893f
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 52 additions and 8 deletions
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60
sound/soc/codecs/pcm3168a.c
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@ -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[] = {