diff mbox series

[3/3] ASoC: cs42l42: Fix bclk calculation for mono

Message ID 20210729170929.6589-3-rf@opensource.cirrus.com (mailing list archive)
State Accepted
Commit 926ef1a4c245c093acc07807e466ad2ef0ff6ccb
Headers show
Series [1/3] ASoC: cs42l42: Correct definition of ADC Volume control | expand

Commit Message

Richard Fitzgerald July 29, 2021, 5:09 p.m. UTC 
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: 2cdba9b045c7 ("ASoC: cs42l42: Use bclk from hw_params if set_sysclk was not called")
---
 sound/soc/codecs/cs42l42.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index 38e243a815b1..08ca05bfbeb3 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -830,6 +830,10 @@  static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream,
 	cs42l42->srate = params_rate(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) {
 	case SNDRV_PCM_STREAM_CAPTURE:
 		if (channels == 2) {