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ASoC: wm8990: Convert to snd_soc_cache_sync for sync reg_cache with the hardware 

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 2011-10-06 11:00:19 +08:00 committed by Mark Brown
parent a92f1394a1
commit 416a0ce5f2
1 changed files with 19 additions and 13 deletions
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32
sound/soc/codecs/wm8990.c
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@ -36,6 +36,17 @@ struct wm8990_priv {
unsigned int pcmclk;
};
static int wm8990_volatile_register(struct snd_soc_codec *codec,
unsigned int reg)
{
switch (reg) {
case WM8990_RESET:
return 1;
default:
return 0;
}
}
/*
* wm8990 register cache. Note that register 0 is not included in the
* cache.
@ -1156,6 +1167,7 @@ static int wm8990_mute(struct snd_soc_dai *dai, int mute)
static int wm8990_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
int ret;
u16 val;
switch (level) {
@ -1171,6 +1183,12 @@ static int wm8990_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
ret = snd_soc_cache_sync(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to sync cache: %d\n", ret);
return ret;
}
/* Enable all output discharge bits */
snd_soc_write(codec, WM8990_ANTIPOP1, WM8990_DIS_LLINE |
WM8990_DIS_RLINE | WM8990_DIS_OUT3 |
@ -1319,19 +1337,6 @@ static int wm8990_suspend(struct snd_soc_codec *codec, pm_message_t state)
static int wm8990_resume(struct snd_soc_codec *codec)
{
int i;
u8 data[2];
u16 *cache = codec->reg_cache;
/* Sync reg_cache with the hardware */
for (i = 0; i < ARRAY_SIZE(wm8990_reg); i++) {
if (i + 1 == WM8990_RESET)
continue;
data[0] = ((i + 1) << 1) | ((cache[i] >> 8) & 0x0001);
data[1] = cache[i] & 0x00ff;
codec->hw_write(codec->control_data, data, 2);
}
wm8990_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
@ -1392,6 +1397,7 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8990 = {
.reg_cache_size = ARRAY_SIZE(wm8990_reg),
.reg_word_size = sizeof(u16),
.reg_cache_default = wm8990_reg,
.volatile_register = wm8990_volatile_register,
};
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)