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ASoC: wm8580: Use snd_soc_update_bits for read-modify-write 

Use snd_soc_update_bits for read-modify-write register access instead of
open-coding it using snd_soc_read and snd_soc_write

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2011-10-17 11:50:46 +08:00 committed by Mark Brown
parent 29c6a01df8
commit a6785d7df8
1 changed files with 9 additions and 13 deletions
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22
sound/soc/codecs/wm8580.c
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@ -430,8 +430,7 @@ static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
/* Always disable the PLL - it is not safe to leave it running
* while reprogramming it.
*/
reg = snd_soc_read(codec, WM8580_PWRDN2);
snd_soc_write(codec, WM8580_PWRDN2, reg | pwr_mask);
snd_soc_update_bits(codec, WM8580_PWRDN2, pwr_mask, pwr_mask);
if (!freq_in || !freq_out)
return 0;
@ -449,8 +448,7 @@ static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
snd_soc_write(codec, WM8580_PLLA4 + offset, reg);
/* All done, turn it on */
reg = snd_soc_read(codec, WM8580_PWRDN2);
snd_soc_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
snd_soc_update_bits(codec, WM8580_PWRDN2, pwr_mask, 0);
return 0;
}
@ -748,7 +746,6 @@ static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
static int wm8580_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u16 reg;
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
@ -757,20 +754,19 @@ static int wm8580_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
/* Power up and get individual control of the DACs */
reg = snd_soc_read(codec, WM8580_PWRDN1);
reg &= ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD);
snd_soc_write(codec, WM8580_PWRDN1, reg);
snd_soc_update_bits(codec, WM8580_PWRDN1,
WM8580_PWRDN1_PWDN |
WM8580_PWRDN1_ALLDACPD, 0);
/* Make VMID high impedance */
reg = snd_soc_read(codec, WM8580_ADC_CONTROL1);
reg &= ~0x100;
snd_soc_write(codec, WM8580_ADC_CONTROL1, reg);
snd_soc_update_bits(codec, WM8580_ADC_CONTROL1,
0x100, 0);
}
break;
case SND_SOC_BIAS_OFF:
reg = snd_soc_read(codec, WM8580_PWRDN1);
snd_soc_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
snd_soc_update_bits(codec, WM8580_PWRDN1,
WM8580_PWRDN1_PWDN, WM8580_PWRDN1_PWDN);
break;
}
codec->dapm.bias_level = level;