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Commit d8707cec authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Mark Brown
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ASoC: TWL4030: Only update the needed bits in *set_dai_sysclk 



Do not rewrite the whole register, but only update the needed
bits in set_dai_sysclk functions.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 3da8e688

sound/soc/codecs/twl4030.c

+12 −10
Original line number Diff line number Diff line
@@ -1785,19 +1785,21 @@ static int twl4030_set_dai_sysclk(struct snd_soc_dai *codec_dai, 
{

	struct snd_soc_codec *codec = codec_dai->codec;

	struct twl4030_priv *twl4030 = codec->private_data;

	u8 infreq;

	u8 apll_ctrl;



	apll_ctrl = twl4030_read_reg_cache(codec, TWL4030_REG_APLL_CTL);

	apll_ctrl &= ~TWL4030_APLL_INFREQ;

	switch (freq) {

	case 19200000:

		infreq = TWL4030_APLL_INFREQ_19200KHZ;

		apll_ctrl |= TWL4030_APLL_INFREQ_19200KHZ;

		twl4030->sysclk = 19200;

		break;

	case 26000000:

		infreq = TWL4030_APLL_INFREQ_26000KHZ;

		apll_ctrl |= TWL4030_APLL_INFREQ_26000KHZ;

		twl4030->sysclk = 26000;

		break;

	case 38400000:

		infreq = TWL4030_APLL_INFREQ_38400KHZ;

		apll_ctrl |= TWL4030_APLL_INFREQ_38400KHZ;

		twl4030->sysclk = 38400;

		break;

	default:
@@ -1806,8 +1808,7 @@ static int twl4030_set_dai_sysclk(struct snd_soc_dai *codec_dai, 
		return -EINVAL;

	}



	infreq |= TWL4030_APLL_EN;

	twl4030_write(codec, TWL4030_REG_APLL_CTL, infreq);

	twl4030_write(codec, TWL4030_REG_APLL_CTL, apll_ctrl);



	return 0;

}
@@ -1989,11 +1990,13 @@ static int twl4030_voice_set_dai_sysclk(struct snd_soc_dai *codec_dai, 
		int clk_id, unsigned int freq, int dir)

{

	struct snd_soc_codec *codec = codec_dai->codec;

	u8 infreq;

	u8 apll_ctrl;



	apll_ctrl = twl4030_read_reg_cache(codec, TWL4030_REG_APLL_CTL);

	apll_ctrl &= ~TWL4030_APLL_INFREQ;

	switch (freq) {

	case 26000000:

		infreq = TWL4030_APLL_INFREQ_26000KHZ;

		apll_ctrl |= TWL4030_APLL_INFREQ_26000KHZ;

		break;

	default:

		printk(KERN_ERR "TWL4030 voice set sysclk: unknown rate %d\n",
@@ -2001,8 +2004,7 @@ static int twl4030_voice_set_dai_sysclk(struct snd_soc_dai *codec_dai, 
		return -EINVAL;

	}



	infreq |= TWL4030_APLL_EN;

	twl4030_write(codec, TWL4030_REG_APLL_CTL, infreq);

	twl4030_write(codec, TWL4030_REG_APLL_CTL, apll_ctrl);



	return 0;

}