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ASoC: tlv320aic3x: Optimize PLL programming in aic3x_set_bias_level

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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>
This commit is contained in:
Jarkko Nikula 2010-09-10 14:23:29 +03:00 • committed by Liam Girdwood
parent 3484457fc5
commit c23fd751dc
1 changed files with 6 additions and 4 deletions
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10
sound/soc/codecs/tlv320aic3x.c
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@ -1069,7 +1069,8 @@ static int aic3x_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_ON: case SND_SOC_BIAS_ON:
break; break;
case SND_SOC_BIAS_PREPARE: case SND_SOC_BIAS_PREPARE:
if (aic3x->master) { if (codec->bias_level == SND_SOC_BIAS_STANDBY &&
aic3x->master) {
/* enable pll */ /* enable pll */
reg = aic3x_read_reg_cache(codec, AIC3X_PLL_PROGA_REG); reg = aic3x_read_reg_cache(codec, AIC3X_PLL_PROGA_REG);
aic3x_write(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; break;
case SND_SOC_BIAS_STANDBY: case SND_SOC_BIAS_STANDBY:
/* fall through and disable pll */ if (codec->bias_level == SND_SOC_BIAS_PREPARE &&
case SND_SOC_BIAS_OFF: aic3x->master) {
if (aic3x->master) {
/* disable pll */ /* disable pll */
reg = aic3x_read_reg_cache(codec, AIC3X_PLL_PROGA_REG); reg = aic3x_read_reg_cache(codec, AIC3X_PLL_PROGA_REG);
aic3x_write(codec, AIC3X_PLL_PROGA_REG, aic3x_write(codec, AIC3X_PLL_PROGA_REG,
reg & ~PLL_ENABLE); reg & ~PLL_ENABLE);
} }
break; break;
case SND_SOC_BIAS_OFF:
break;
} }
codec->bias_level = level; codec->bias_level = level;