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ASoC: ssm2602: Use core for applying symmetry constraints 

Let the core take care of applying sample rate and sample bits constraints
instead of open-coding this in the driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Lars-Peter Clausen 2013-12-02 21:26:22 +01:00 committed by Mark Brown
parent 647dc469e6
commit a010ff628c
1 changed files with 2 additions and 48 deletions
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50
sound/soc/codecs/ssm2602.c
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@ -53,8 +53,6 @@ enum ssm2602_type {
struct ssm2602_priv {
unsigned int sysclk;
struct snd_pcm_hw_constraint_list *sysclk_constraints;
struct snd_pcm_substream *master_substream;
struct snd_pcm_substream *slave_substream;
struct regmap *regmap;
@ -277,11 +275,6 @@ static int ssm2602_hw_params(struct snd_pcm_substream *substream,
int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
unsigned int iface;
if (substream == ssm2602->slave_substream) {
dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
return 0;
}
if (srate < 0)
return srate;
@ -314,33 +307,6 @@ static int ssm2602_startup(struct snd_pcm_substream *substream,
{
struct snd_soc_codec *codec = dai->codec;
struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
struct snd_pcm_runtime *master_runtime;
/* The DAI has shared clocks so if we already have a playback or
* capture going then constrain this substream to match it.
* TODO: the ssm2602 allows pairs of non-matching PB/REC rates
*/
if (ssm2602->master_substream) {
master_runtime = ssm2602->master_substream->runtime;
dev_dbg(codec->dev, "Constraining to %d bits at %dHz\n",
master_runtime->sample_bits,
master_runtime->rate);
if (master_runtime->rate != 0)
snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE,
master_runtime->rate,
master_runtime->rate);
if (master_runtime->sample_bits != 0)
snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
master_runtime->sample_bits,
master_runtime->sample_bits);
ssm2602->slave_substream = substream;
} else
ssm2602->master_substream = substream;
if (ssm2602->sysclk_constraints) {
snd_pcm_hw_constraint_list(substream->runtime, 0,
@ -351,19 +317,6 @@ static int ssm2602_startup(struct snd_pcm_substream *substream,
return 0;
}
static void ssm2602_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(codec);
if (ssm2602->master_substream == substream)
ssm2602->master_substream = ssm2602->slave_substream;
ssm2602->slave_substream = NULL;
}
static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
{
struct ssm2602_priv *ssm2602 = snd_soc_codec_get_drvdata(dai->codec);
@ -530,7 +483,6 @@ static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
static const struct snd_soc_dai_ops ssm2602_dai_ops = {
.startup = ssm2602_startup,
.hw_params = ssm2602_hw_params,
.shutdown = ssm2602_shutdown,
.digital_mute = ssm2602_mute,
.set_sysclk = ssm2602_set_dai_sysclk,
.set_fmt = ssm2602_set_dai_fmt,
@ -551,6 +503,8 @@ static struct snd_soc_dai_driver ssm2602_dai = {
.rates = SSM2602_RATES,
.formats = SSM2602_FORMATS,},
.ops = &ssm2602_dai_ops,
.symmetric_rates = 1,
.symmetric_samplebits = 1,
};
static int ssm2602_suspend(struct snd_soc_codec *codec)