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ASoC: cs42l42: Implement 'set_bclk_ratio'

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The driver wants to know the bit rate on the serial bus and takes that
to be the value set by 'set_sysclk'. The 'set_bclk_ratio' op is a better
fit for figuring out the clocking parameters of the serial bus, so
implement that and give it precedence over the prior methods.

Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Link: https://lore.kernel.org/r/20220915094444.11434-11-povik+lin@cutebit.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Martin Povišer 2022-09-15 11:44:43 +02:00 committed by Mark Brown
parent 94d5f62a91
commit ab2940a72d
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 17 additions and 1 deletions
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17
sound/soc/codecs/cs42l42.c
View File

@ -898,7 +898,10 @@ static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream,
cs42l42->srate = params_rate(params);
if (cs42l42->sclk) {
if (cs42l42->bclk_ratio) {
/* machine driver has set the BCLK/samp-rate ratio */
bclk = cs42l42->bclk_ratio * params_rate(params);
} else if (cs42l42->sclk) {
/* machine driver has set the SCLK */
bclk = cs42l42->sclk;
} else {
@ -984,6 +987,17 @@ static int cs42l42_set_sysclk(struct snd_soc_dai *dai,
return -EINVAL;
}
static int cs42l42_set_bclk_ratio(struct snd_soc_dai *dai,
unsigned int bclk_ratio)
{
struct snd_soc_component *component = dai->component;
struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component);
cs42l42->bclk_ratio = bclk_ratio;
return 0;
}
static int cs42l42_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
{
struct snd_soc_component *component = dai->component;
@ -1087,6 +1101,7 @@ static const struct snd_soc_dai_ops cs42l42_ops = {
.hw_params = cs42l42_pcm_hw_params,
.set_fmt = cs42l42_set_dai_fmt,
.set_sysclk = cs42l42_set_sysclk,
.set_bclk_ratio = cs42l42_set_bclk_ratio,
.mute_stream = cs42l42_mute_stream,
};

1
sound/soc/codecs/cs42l42.h
View File

@ -35,6 +35,7 @@ struct cs42l42_private {
int irq;
int pll_config;
u32 sclk;
u32 bclk_ratio;
u32 srate;
u8 plug_state;
u8 hs_type;