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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-10 19:27:10 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-10 19:47:45 +0000
commit3b1228abc93f7ab0aa28c46341d6a0f7e2cade70 (patch)
treec31fa3b9a9e25b998d2c07aad238588d40795e9b /sound/soc
parentd58d5d5567ea9483346f57c83a94ce05992cd47c (diff)
ASoC: Stop WM8903 SYSCLK when suspending
This will save some additional power. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/codecs/wm8903.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index c80968fe326..bde74546db4 100644
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -997,6 +997,9 @@ static int wm8903_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF) {
+ wm8903_write(codec, WM8903_CLOCK_RATES_2,
+ WM8903_CLK_SYS_ENA);
+
wm8903_run_sequence(codec, 0);
wm8903_sync_reg_cache(codec, codec->reg_cache);
@@ -1027,6 +1030,9 @@ static int wm8903_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_OFF:
wm8903_run_sequence(codec, 32);
+ reg = wm8903_read(codec, WM8903_CLOCK_RATES_2);
+ reg &= ~WM8903_CLK_SYS_ENA;
+ wm8903_write(codec, WM8903_CLOCK_RATES_2, reg);
break;
}
@@ -1619,9 +1625,6 @@ static int wm8903_i2c_probe(struct i2c_client *i2c,
wm8903_reset(codec);
- /* SYSCLK is required for pretty much anything */
- wm8903_write(codec, WM8903_CLOCK_RATES_2, WM8903_CLK_SYS_ENA);
-
/* power on device */
wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY);