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ASoC: arizona: Add DVFS handling for sample rate control

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The WM8997 and WM5102 codecs need to boost DVFS for higher sample rates.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Richard Fitzgerald 2015-06-02 11:53:35 +01:00 committed by Mark Brown
parent 81ac58b13f
commit 2c118b4c27
1 changed files with 18 additions and 1 deletions
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19
sound/soc/codecs/arizona.c
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@ -1394,7 +1394,7 @@ static int arizona_hw_params_rate(struct snd_pcm_substream *substream,
struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1];
int base = dai->driver->base;
int i, sr_val;
int i, sr_val, ret;
/*
* We will need to be more flexible than this in future,
@ -1410,6 +1410,23 @@ static int arizona_hw_params_rate(struct snd_pcm_substream *substream,
}
sr_val = i;
switch (priv->arizona->type) {
case WM5102:
case WM8997:
if (arizona_sr_vals[sr_val] >= 88200)
ret = arizona_dvfs_up(codec, ARIZONA_DVFS_SR1_RQ);
else
ret = arizona_dvfs_down(codec, ARIZONA_DVFS_SR1_RQ);
if (ret) {
arizona_aif_err(dai, "Failed to change DVFS %d\n", ret);
return ret;
}
break;
default:
break;
}
switch (dai_priv->clk) {
case ARIZONA_CLK_SYSCLK:
switch (priv->arizona->type) {