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ASoC: SSM2602: Add sysclk based rate constraints 

Not all advertised rates are available for all sysclk frequencies. Add
additional sysclk based rate constraints.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Lars-Peter Clausen 2012-04-25 11:42:46 +02:00 committed by Mark Brown
parent d9ca8e76f3
commit 8b3f39dab5
1 changed files with 34 additions and 4 deletions
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38
sound/soc/codecs/ssm2602.c
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@ -53,6 +53,7 @@ enum ssm2602_type {
/* codec private data */
struct ssm2602_priv {
unsigned int sysclk;
struct snd_pcm_hw_constraint_list *sysclk_constraints;
enum snd_soc_control_type control_type;
struct snd_pcm_substream *master_substream;
struct snd_pcm_substream *slave_substream;
@ -195,6 +196,24 @@ static const struct snd_soc_dapm_route ssm2604_routes[] = {
{"ADC", NULL, "Line Input"},
};
static const unsigned int ssm2602_rates_12288000[] = {
8000, 32000, 48000, 96000,
};
static struct snd_pcm_hw_constraint_list ssm2602_constraints_12288000 = {
.list = ssm2602_rates_12288000,
.count = ARRAY_SIZE(ssm2602_rates_12288000),
};
static const unsigned int ssm2602_rates_11289600[] = {
8000, 44100, 88200,
};
static struct snd_pcm_hw_constraint_list ssm2602_constraints_11289600 = {
.list = ssm2602_rates_11289600,
.count = ARRAY_SIZE(ssm2602_rates_11289600),
};
struct ssm2602_coeff {
u32 mclk;
u32 rate;
@ -320,6 +339,12 @@ static int ssm2602_startup(struct snd_pcm_substream *substream,
} else
ssm2602->master_substream = substream;
if (ssm2602->sysclk_constraints) {
snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
ssm2602->sysclk_constraints);
}
return 0;
}
@ -361,16 +386,21 @@ static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
return -EINVAL;
switch (freq) {
case 11289600:
case 12000000:
case 12288000:
case 16934400:
case 18432000:
ssm2602->sysclk = freq;
ssm2602->sysclk_constraints = &ssm2602_constraints_12288000;
break;
case 11289600:
case 16934400:
ssm2602->sysclk_constraints = &ssm2602_constraints_11289600;
break;
case 12000000:
ssm2602->sysclk_constraints = NULL;
break;
default:
return -EINVAL;
}
ssm2602->sysclk = freq;
} else {
unsigned int mask;