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path: root/sound/soc/codecs/nau8825.c
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Diffstat (limited to 'sound/soc/codecs/nau8825.c')
-rw-r--r--sound/soc/codecs/nau8825.c83
1 files changed, 45 insertions, 38 deletions
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c
index 54ef7b0fa878..8213273f501e 100644
--- a/sound/soc/codecs/nau8825.c
+++ b/sound/soc/codecs/nau8825.c
@@ -1247,27 +1247,42 @@ static const struct snd_soc_dapm_route nau8825_dapm_routes[] = {
{"HPOR", NULL, "Class G"},
};
-static int nau8825_clock_check(struct nau8825 *nau8825,
- int stream, int rate, int osr)
+static const struct nau8825_osr_attr *
+nau8825_get_osr(struct nau8825 *nau8825, int stream)
{
- int osrate;
+ unsigned int osr;
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ regmap_read(nau8825->regmap,
+ NAU8825_REG_DAC_CTRL1, &osr);
+ osr &= NAU8825_DAC_OVERSAMPLE_MASK;
if (osr >= ARRAY_SIZE(osr_dac_sel))
- return -EINVAL;
- osrate = osr_dac_sel[osr].osr;
+ return NULL;
+ return &osr_dac_sel[osr];
} else {
+ regmap_read(nau8825->regmap,
+ NAU8825_REG_ADC_RATE, &osr);
+ osr &= NAU8825_ADC_SYNC_DOWN_MASK;
if (osr >= ARRAY_SIZE(osr_adc_sel))
- return -EINVAL;
- osrate = osr_adc_sel[osr].osr;
+ return NULL;
+ return &osr_adc_sel[osr];
}
+}
- if (!osrate || rate * osr > CLK_DA_AD_MAX) {
- dev_err(nau8825->dev, "exceed the maximum frequency of CLK_ADC or CLK_DAC\n");
+static int nau8825_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
+ const struct nau8825_osr_attr *osr;
+
+ osr = nau8825_get_osr(nau8825, substream->stream);
+ if (!osr || !osr->osr)
return -EINVAL;
- }
- return 0;
+ return snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_RATE,
+ 0, CLK_DA_AD_MAX / osr->osr);
}
static int nau8825_hw_params(struct snd_pcm_substream *substream,
@@ -1276,7 +1291,9 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream,
{
struct snd_soc_component *component = dai->component;
struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
- unsigned int val_len = 0, osr, ctrl_val, bclk_fs, bclk_div;
+ unsigned int val_len = 0, ctrl_val, bclk_fs, bclk_div;
+ const struct nau8825_osr_attr *osr;
+ int err = -EINVAL;
nau8825_sema_acquire(nau8825, 3 * HZ);
@@ -1286,29 +1303,19 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream,
* values must be selected such that the maximum frequency is less
* than 6.144 MHz.
*/
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- regmap_read(nau8825->regmap, NAU8825_REG_DAC_CTRL1, &osr);
- osr &= NAU8825_DAC_OVERSAMPLE_MASK;
- if (nau8825_clock_check(nau8825, substream->stream,
- params_rate(params), osr)) {
- nau8825_sema_release(nau8825);
- return -EINVAL;
- }
+ osr = nau8825_get_osr(nau8825, substream->stream);
+ if (!osr || !osr->osr)
+ goto error;
+ if (params_rate(params) * osr->osr > CLK_DA_AD_MAX)
+ goto error;
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_DAC_SRC_MASK,
- osr_dac_sel[osr].clk_src << NAU8825_CLK_DAC_SRC_SFT);
- } else {
- regmap_read(nau8825->regmap, NAU8825_REG_ADC_RATE, &osr);
- osr &= NAU8825_ADC_SYNC_DOWN_MASK;
- if (nau8825_clock_check(nau8825, substream->stream,
- params_rate(params), osr)) {
- nau8825_sema_release(nau8825);
- return -EINVAL;
- }
+ osr->clk_src << NAU8825_CLK_DAC_SRC_SFT);
+ else
regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_ADC_SRC_MASK,
- osr_adc_sel[osr].clk_src << NAU8825_CLK_ADC_SRC_SFT);
- }
+ osr->clk_src << NAU8825_CLK_ADC_SRC_SFT);
/* make BCLK and LRC divde configuration if the codec as master. */
regmap_read(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, &ctrl_val);
@@ -1321,10 +1328,8 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream,
bclk_div = 1;
else if (bclk_fs <= 128)
bclk_div = 0;
- else {
- nau8825_sema_release(nau8825);
- return -EINVAL;
- }
+ else
+ goto error;
regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
NAU8825_I2S_LRC_DIV_MASK | NAU8825_I2S_BLK_DIV_MASK,
((bclk_div + 1) << NAU8825_I2S_LRC_DIV_SFT) | bclk_div);
@@ -1344,17 +1349,18 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream,
val_len |= NAU8825_I2S_DL_32;
break;
default:
- nau8825_sema_release(nau8825);
- return -EINVAL;
+ goto error;
}
regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1,
NAU8825_I2S_DL_MASK, val_len);
+ err = 0;
+ error:
/* Release the semaphore. */
nau8825_sema_release(nau8825);
- return 0;
+ return err;
}
static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
@@ -1420,6 +1426,7 @@ static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
}
static const struct snd_soc_dai_ops nau8825_dai_ops = {
+ .startup = nau8825_dai_startup,
.hw_params = nau8825_hw_params,
.set_fmt = nau8825_set_dai_fmt,
};