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ASoC: cs42l42: Fix bclk calculation for mono

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An I2S frame always has a left and right channel slot even if mono
data is being sent. So if channels==1 the actual bitclock frequency
is 2 * snd_soc_params_to_bclk(params).

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: 2cdba9b045 ("ASoC: cs42l42: Use bclk from hw_params if set_sysclk was not called")
Link: https://lore.kernel.org/r/20210729170929.6589-3-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Richard Fitzgerald 2021-07-29 18:09:29 +01:00 committed by Mark Brown
parent 64324bac75
commit 926ef1a4c2
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1 changed files with 4 additions and 0 deletions
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4
sound/soc/codecs/cs42l42.c
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@ -830,6 +830,10 @@ static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream,
cs42l42->srate = params_rate(params); cs42l42->srate = params_rate(params);
cs42l42->bclk = snd_soc_params_to_bclk(params); cs42l42->bclk = snd_soc_params_to_bclk(params);
/* I2S frame always has 2 channels even for mono audio */
if (channels == 1)
cs42l42->bclk *= 2;
switch(substream->stream) { switch(substream->stream) {
case SNDRV_PCM_STREAM_CAPTURE: case SNDRV_PCM_STREAM_CAPTURE:
if (channels == 2) { if (channels == 2) {