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>
diff --git a/sound/soc/codecs/ssm2602.c b/sound/soc/codecs/ssm2602.c
index 4c94fd2..dcedd74 100644
--- a/sound/soc/codecs/ssm2602.c
+++ b/sound/soc/codecs/ssm2602.c
@@ -53,6 +53,7 @@
/* 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 @@
{"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 @@
} 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 @@
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;