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authorJarkko Nikula <jhnikula@gmail.com>2010-09-10 14:23:29 +0300
committerLiam Girdwood <lrg@slimlogic.co.uk>2010-09-11 09:03:20 +0100
commitc23fd751dc2953263be5989ca537fdee14dee46e (patch)
tree5a0ff082594493ca0a296257b971758fcdd298e7 /sound/soc/codecs/tlv320aic3x.c
parent3484457fc5fcdb650e03d375f1f6e66db93d6109 (diff)
ASoC: tlv320aic3x: Optimize PLL programming in aic3x_set_bias_level
There is only need to enable/disable once the PLL when the bias is going between on, prepare, standby and off states. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'sound/soc/codecs/tlv320aic3x.c')
-rw-r--r--sound/soc/codecs/tlv320aic3x.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index b3175860bcb..94dc707d902 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -1069,7 +1069,8 @@ static int aic3x_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
- if (aic3x->master) {
+ if (codec->bias_level == SND_SOC_BIAS_STANDBY &&
+ aic3x->master) {
/* enable pll */
reg = aic3x_read_reg_cache(codec, AIC3X_PLL_PROGA_REG);
aic3x_write(codec, AIC3X_PLL_PROGA_REG,
@@ -1077,15 +1078,16 @@ static int aic3x_set_bias_level(struct snd_soc_codec *codec,
}
break;
case SND_SOC_BIAS_STANDBY:
- /* fall through and disable pll */
- case SND_SOC_BIAS_OFF:
- if (aic3x->master) {
+ if (codec->bias_level == SND_SOC_BIAS_PREPARE &&
+ aic3x->master) {
/* disable pll */
reg = aic3x_read_reg_cache(codec, AIC3X_PLL_PROGA_REG);
aic3x_write(codec, AIC3X_PLL_PROGA_REG,
reg & ~PLL_ENABLE);
}
break;
+ case SND_SOC_BIAS_OFF:
+ break;
}
codec->bias_level = level;