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Diffstat (limited to 'sound/soc/codecs/nau8821.c')
-rw-r--r--sound/soc/codecs/nau8821.c66
1 files changed, 36 insertions, 30 deletions
diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c
index 2d21339932e6..4a72b94e8410 100644
--- a/sound/soc/codecs/nau8821.c
+++ b/sound/soc/codecs/nau8821.c
@@ -670,28 +670,40 @@ static const struct snd_soc_dapm_route nau8821_dapm_routes[] = {
{"HPOR", NULL, "Class G"},
};
-static int nau8821_clock_check(struct nau8821 *nau8821,
- int stream, int rate, int osr)
+static const struct nau8821_osr_attr *
+nau8821_get_osr(struct nau8821 *nau8821, int stream)
{
- int osrate = 0;
+ unsigned int osr;
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ regmap_read(nau8821->regmap, NAU8821_R2C_DAC_CTRL1, &osr);
+ osr &= NAU8821_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(nau8821->regmap, NAU8821_R2B_ADC_RATE, &osr);
+ osr &= NAU8821_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 * osrate > CLK_DA_AD_MAX) {
- dev_err(nau8821->dev,
- "exceed the maximum frequency of CLK_ADC or CLK_DAC");
+static int nau8821_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ const struct nau8821_osr_attr *osr;
+
+ osr = nau8821_get_osr(nau8821, 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 nau8821_hw_params(struct snd_pcm_substream *substream,
@@ -699,7 +711,8 @@ static int nau8821_hw_params(struct snd_pcm_substream *substream,
{
struct snd_soc_component *component = dai->component;
struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
- unsigned int val_len = 0, osr, ctrl_val, bclk_fs, clk_div;
+ unsigned int val_len = 0, ctrl_val, bclk_fs, clk_div;
+ const struct nau8821_osr_attr *osr;
nau8821->fs = params_rate(params);
/* CLK_DAC or CLK_ADC = OSR * FS
@@ -708,27 +721,19 @@ static int nau8821_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(nau8821->regmap, NAU8821_R2C_DAC_CTRL1, &osr);
- osr &= NAU8821_DAC_OVERSAMPLE_MASK;
- if (nau8821_clock_check(nau8821, substream->stream,
- nau8821->fs, osr)) {
- return -EINVAL;
- }
+ osr = nau8821_get_osr(nau8821, substream->stream);
+ if (!osr || !osr->osr)
+ return -EINVAL;
+ if (nau8821->fs * osr->osr > CLK_DA_AD_MAX)
+ return -EINVAL;
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
NAU8821_CLK_DAC_SRC_MASK,
- osr_dac_sel[osr].clk_src << NAU8821_CLK_DAC_SRC_SFT);
- } else {
- regmap_read(nau8821->regmap, NAU8821_R2B_ADC_RATE, &osr);
- osr &= NAU8821_ADC_SYNC_DOWN_MASK;
- if (nau8821_clock_check(nau8821, substream->stream,
- nau8821->fs, osr)) {
- return -EINVAL;
- }
+ osr->clk_src << NAU8821_CLK_DAC_SRC_SFT);
+ else
regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
NAU8821_CLK_ADC_SRC_MASK,
- osr_adc_sel[osr].clk_src << NAU8821_CLK_ADC_SRC_SFT);
- }
+ osr->clk_src << NAU8821_CLK_ADC_SRC_SFT);
/* make BCLK and LRC divde configuration if the codec as master. */
regmap_read(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2, &ctrl_val);
@@ -843,6 +848,7 @@ static int nau8821_digital_mute(struct snd_soc_dai *dai, int mute,
}
static const struct snd_soc_dai_ops nau8821_dai_ops = {
+ .startup = nau8821_dai_startup,
.hw_params = nau8821_hw_params,
.set_fmt = nau8821_set_dai_fmt,
.mute_stream = nau8821_digital_mute,