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ASoC: wm8996: Inline wm8996_reset() and optimise cache-only usage

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There is only one caller and this allows us to cleanly leave the CODEC
with the internal LDO powered down which is the default state we're
looking for and means that we can robustly disable the register cache
only when we either disable the LDO or power down the external
regulators.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-06-11 18:41:16 +08:00
parent 625c4888ff
commit d4b3d0fbb7
1 changed files with 13 additions and 18 deletions
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31
sound/soc/codecs/wm8996.c
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@ -1528,18 +1528,6 @@ static bool wm8996_volatile_register(struct device *dev, unsigned int reg)
}
}
static int wm8996_reset(struct wm8996_priv *wm8996)
{
if (wm8996->pdata.ldo_ena > 0) {
gpio_set_value_cansleep(wm8996->pdata.ldo_ena, 0);
gpio_set_value_cansleep(wm8996->pdata.ldo_ena, 1);
return 0;
} else {
return regmap_write(wm8996->regmap, WM8996_SOFTWARE_RESET,
0x8915);
}
}
static const int bclk_divs[] = {
1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96
};
@ -1631,8 +1619,10 @@ static int wm8996_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_OFF:
regcache_cache_only(codec->control_data, true);
if (wm8996->pdata.ldo_ena >= 0)
if (wm8996->pdata.ldo_ena >= 0) {
gpio_set_value_cansleep(wm8996->pdata.ldo_ena, 0);
regcache_cache_only(codec->control_data, true);
}
regulator_bulk_disable(ARRAY_SIZE(wm8996->supplies),
wm8996->supplies);
break;
@ -3019,13 +3009,18 @@ static __devinit int wm8996_i2c_probe(struct i2c_client *i2c,
dev_info(&i2c->dev, "revision %c\n",
(reg & WM8996_CHIP_REV_MASK) + 'A');
ret = wm8996_reset(wm8996);
if (ret < 0) {
dev_err(&i2c->dev, "Failed to issue reset\n");
goto err_regmap;
if (wm8996->pdata.ldo_ena > 0) {
gpio_set_value_cansleep(wm8996->pdata.ldo_ena, 0);
regcache_cache_only(wm8996->regmap, true);
} else {
ret = regmap_write(wm8996->regmap, WM8996_SOFTWARE_RESET,
0x8915);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret);
goto err_regmap;
}
}
regcache_cache_only(wm8996->regmap, true);
regulator_bulk_disable(ARRAY_SIZE(wm8996->supplies), wm8996->supplies);
wm8996_init_gpio(wm8996);