From c23fd751dc2953263be5989ca537fdee14dee46e Mon Sep 17 00:00:00 2001
From: Jarkko Nikula <jhnikula@gmail.com>
Date: Fri, 10 Sep 2010 14:23:29 +0300
Subject: [PATCH] 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>
---
sound/soc/codecs/tlv320aic3x.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index b3175860bcb4c..94dc707d90227 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;
--
2.30.2