diff options
| -rw-r--r-- | sound/soc/sophgo/cv1800b-sound-dac.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sound/soc/sophgo/cv1800b-sound-dac.c b/sound/soc/sophgo/cv1800b-sound-dac.c index ccf386174639..135322bcf6ad 100644 --- a/sound/soc/sophgo/cv1800b-sound-dac.c +++ b/sound/soc/sophgo/cv1800b-sound-dac.c @@ -57,6 +57,10 @@ static void cv1800b_dac_enable(struct cv1800b_priv *priv, bool enable) writel(val, priv->regs + CV1800B_TXDAC_CTRL0); } +/* + * Control the DAC overwrite bits. When enabled, the DAC outputs the fixed + * overwrite value instead of samples from the I2S input. + */ static void cv1800b_dac_mute(struct cv1800b_priv *priv, bool enable) { u32 val; @@ -105,7 +109,7 @@ static int cv1800b_dac_hw_params(struct snd_pcm_substream *substream, dev_err(priv->dev, "rate %u is not supported\n", rate); return -EINVAL; } - + /* Clear DAC overwrite so playback uses I2S data. */ cv1800b_dac_mute(priv, false); /* minimal decimation for 48kHz is 64*/ ret = cv1800b_dac_decimation(priv, DECIMATION_64); |