Commit 1947dadf authored by Mark Brown's avatar Mark Brown

ASoC: wm8994: Don't bother lowering clock dividers inside idle AIFs

This increases the chances we'll manage to hit a partially configured
state on restart and the power savings are extremely small.
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 172b4c5c
...@@ -2623,33 +2623,6 @@ static int wm8994_aif3_hw_params(struct snd_pcm_substream *substream, ...@@ -2623,33 +2623,6 @@ static int wm8994_aif3_hw_params(struct snd_pcm_substream *substream,
return snd_soc_update_bits(codec, aif1_reg, WM8994_AIF1_WL_MASK, aif1); return snd_soc_update_bits(codec, aif1_reg, WM8994_AIF1_WL_MASK, aif1);
} }
static void wm8994_aif_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
int rate_reg = 0;
switch (dai->id) {
case 1:
rate_reg = WM8994_AIF1_RATE;
break;
case 2:
rate_reg = WM8994_AIF2_RATE;
break;
default:
break;
}
/* If the DAI is idle then configure the divider tree for the
* lowest output rate to save a little power if the clock is
* still active (eg, because it is system clock).
*/
if (rate_reg && !dai->playback_active && !dai->capture_active)
snd_soc_update_bits(codec, rate_reg,
WM8994_AIF1_SR_MASK |
WM8994_AIF1CLK_RATE_MASK, 0x9);
}
static int wm8994_aif_mute(struct snd_soc_dai *codec_dai, int mute) static int wm8994_aif_mute(struct snd_soc_dai *codec_dai, int mute)
{ {
struct snd_soc_codec *codec = codec_dai->codec; struct snd_soc_codec *codec = codec_dai->codec;
...@@ -2731,7 +2704,6 @@ static const struct snd_soc_dai_ops wm8994_aif1_dai_ops = { ...@@ -2731,7 +2704,6 @@ static const struct snd_soc_dai_ops wm8994_aif1_dai_ops = {
.set_sysclk = wm8994_set_dai_sysclk, .set_sysclk = wm8994_set_dai_sysclk,
.set_fmt = wm8994_set_dai_fmt, .set_fmt = wm8994_set_dai_fmt,
.hw_params = wm8994_hw_params, .hw_params = wm8994_hw_params,
.shutdown = wm8994_aif_shutdown,
.digital_mute = wm8994_aif_mute, .digital_mute = wm8994_aif_mute,
.set_pll = wm8994_set_fll, .set_pll = wm8994_set_fll,
.set_tristate = wm8994_set_tristate, .set_tristate = wm8994_set_tristate,
...@@ -2741,7 +2713,6 @@ static const struct snd_soc_dai_ops wm8994_aif2_dai_ops = { ...@@ -2741,7 +2713,6 @@ static const struct snd_soc_dai_ops wm8994_aif2_dai_ops = {
.set_sysclk = wm8994_set_dai_sysclk, .set_sysclk = wm8994_set_dai_sysclk,
.set_fmt = wm8994_set_dai_fmt, .set_fmt = wm8994_set_dai_fmt,
.hw_params = wm8994_hw_params, .hw_params = wm8994_hw_params,
.shutdown = wm8994_aif_shutdown,
.digital_mute = wm8994_aif_mute, .digital_mute = wm8994_aif_mute,
.set_pll = wm8994_set_fll, .set_pll = wm8994_set_fll,
.set_tristate = wm8994_set_tristate, .set_tristate = wm8994_set_tristate,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment