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ASoC: wm8904: Move regulator acquisition and device identification to I2C 

It's more idiomatic to have the resource allocation at this level.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-06-09 11:41:58 +08:00
parent fd88759a42
commit 03862cf62e
1 changed files with 51 additions and 61 deletions
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112
sound/soc/codecs/wm8904.c
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@ -314,11 +314,6 @@ static bool wm8904_readable_register(struct device *dev, unsigned int reg)
}
}
static int wm8904_reset(struct snd_soc_codec *codec)
{
return snd_soc_write(codec, WM8904_SW_RESET_AND_ID, 0);
}
static int wm8904_configure_clocking(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
@ -2082,52 +2077,6 @@ static int wm8904_probe(struct snd_soc_codec *codec)
return ret;
}
for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++)
wm8904->supplies[i].supply = wm8904_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8904->supplies),
wm8904->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
wm8904->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_get;
}
ret = snd_soc_read(codec, WM8904_SW_RESET_AND_ID);
if (ret < 0) {
dev_err(codec->dev, "Failed to read ID register\n");
goto err_enable;
}
if (ret != 0x8904) {
dev_err(codec->dev, "Device is not a WM8904, ID is %x\n", ret);
ret = -EINVAL;
goto err_enable;
}
ret = snd_soc_read(codec, WM8904_REVISION);
if (ret < 0) {
dev_err(codec->dev, "Failed to read device revision: %d\n",
ret);
goto err_enable;
}
dev_info(codec->dev, "revision %c\n", ret + 'A');
ret = wm8904_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
goto err_enable;
}
/* Can leave the device powered off until we need it */
regcache_cache_only(wm8904->regmap, true);
regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
/* Change some default settings - latch VU and enable ZC */
snd_soc_update_bits(codec, WM8904_ADC_DIGITAL_VOLUME_LEFT,
WM8904_ADC_VU, WM8904_ADC_VU);
@ -2187,19 +2136,12 @@ static int wm8904_probe(struct snd_soc_codec *codec)
wm8904_add_widgets(codec);
return 0;
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
err_get:
regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
return ret;
}
static int wm8904_remove(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
kfree(wm8904->retune_mobile_texts);
kfree(wm8904->drc_texts);
@ -2230,7 +2172,8 @@ static __devinit int wm8904_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8904_priv *wm8904;
int ret;
unsigned int val;
int ret, i;
wm8904 = devm_kzalloc(&i2c->dev, sizeof(struct wm8904_priv),
GFP_KERNEL);
@ -2249,14 +2192,61 @@ static __devinit int wm8904_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, wm8904);
wm8904->pdata = i2c->dev.platform_data;
for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++)
wm8904->supplies[i].supply = wm8904_supply_names[i];
ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8904->supplies),
wm8904->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
wm8904->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
ret = regmap_read(wm8904->regmap, WM8904_SW_RESET_AND_ID, &val);
if (ret < 0) {
dev_err(&i2c->dev, "Failed to read ID register: %d\n", ret);
goto err_enable;
}
if (val != 0x8904) {
dev_err(&i2c->dev, "Device is not a WM8904, ID is %x\n", val);
ret = -EINVAL;
goto err_enable;
}
ret = regmap_read(wm8904->regmap, WM8904_REVISION, &val);
if (ret < 0) {
dev_err(&i2c->dev, "Failed to read device revision: %d\n",
ret);
goto err_enable;
}
dev_info(&i2c->dev, "revision %c\n", val + 'A');
ret = regmap_write(wm8904->regmap, WM8904_SW_RESET_AND_ID, 0);
if (ret < 0) {
dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret);
goto err_enable;
}
/* Can leave the device powered off until we need it */
regcache_cache_only(wm8904->regmap, true);
regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8904, &wm8904_dai, 1);
if (ret != 0)
goto err;
return ret;
return 0;
err:
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
return ret;
}