From c23fd751dc2953263be5989ca537fdee14dee46e Mon Sep 17 00:00:00 2001 From: Jarkko Nikula 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 Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- 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 b3175860bcb4..94dc707d9022 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; -- 2.20.1