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 --- sound/soc/codecs/cs42l42.c | 17 ++++++++++++++++- sound/soc/codecs/cs42l42.h | 1 + 2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index 3f067cf9131a..36761ba0f2c4 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -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, };
diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h index bc51bb09da5c..a72136664112 100644 --- a/sound/soc/codecs/cs42l42.h +++ b/sound/soc/codecs/cs42l42.h @@ -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;