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ASoC: ak4641: Push GPIO allocation out into the I2C probe

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It's more idiomatic to do this and it means we don't try to bring up the
card if the CODEC didn't manage to bind successfully.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-03-04 14:20:18 +00:00
parent a0abacd82c
commit 253322c188
1 changed files with 48 additions and 44 deletions
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92
sound/soc/codecs/ak4641.c
View file

@ -517,67 +517,24 @@ static int ak4641_resume(struct snd_soc_codec *codec)
static int ak4641_probe(struct snd_soc_codec *codec)
{
struct ak4641_platform_data *pdata = codec->dev->platform_data;
int ret;
if (pdata) {
if (gpio_is_valid(pdata->gpio_power)) {
ret = gpio_request_one(pdata->gpio_power,
GPIOF_OUT_INIT_LOW, "ak4641 power");
if (ret)
goto err_out;
}
if (gpio_is_valid(pdata->gpio_npdn)) {
ret = gpio_request_one(pdata->gpio_npdn,
GPIOF_OUT_INIT_LOW, "ak4641 npdn");
if (ret)
goto err_gpio;
udelay(1); /* > 150 ns */
gpio_set_value(pdata->gpio_npdn, 1);
}
}
ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
if (ret != 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
goto err_register;
return ret;
}
/* power on device */
ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
err_register:
if (pdata) {
if (gpio_is_valid(pdata->gpio_power))
gpio_set_value(pdata->gpio_power, 0);
if (gpio_is_valid(pdata->gpio_npdn))
gpio_free(pdata->gpio_npdn);
}
err_gpio:
if (pdata && gpio_is_valid(pdata->gpio_power))
gpio_free(pdata->gpio_power);
err_out:
return ret;
}
static int ak4641_remove(struct snd_soc_codec *codec)
{
struct ak4641_platform_data *pdata = codec->dev->platform_data;
ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);
if (pdata) {
if (gpio_is_valid(pdata->gpio_power)) {
gpio_set_value(pdata->gpio_power, 0);
gpio_free(pdata->gpio_power);
}
if (gpio_is_valid(pdata->gpio_npdn))
gpio_free(pdata->gpio_npdn);
}
return 0;
}
@ -604,6 +561,7 @@ static struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
static int __devinit ak4641_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct ak4641_platform_data *pdata = i2c->dev.platform_data;
struct ak4641_priv *ak4641;
int ret;
@ -612,16 +570,62 @@ static int __devinit ak4641_i2c_probe(struct i2c_client *i2c,
if (!ak4641)
return -ENOMEM;
if (pdata) {
if (gpio_is_valid(pdata->gpio_power)) {
ret = gpio_request_one(pdata->gpio_power,
GPIOF_OUT_INIT_LOW, "ak4641 power");
if (ret)
goto err_out;
}
if (gpio_is_valid(pdata->gpio_npdn)) {
ret = gpio_request_one(pdata->gpio_npdn,
GPIOF_OUT_INIT_LOW, "ak4641 npdn");
if (ret)
goto err_gpio;
udelay(1); /* > 150 ns */
gpio_set_value(pdata->gpio_npdn, 1);
}
}
i2c_set_clientdata(i2c, ak4641);
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641,
ak4641_dai, ARRAY_SIZE(ak4641_dai));
if (ret != 0)
goto err_gpio2;
return 0;
err_gpio2:
if (pdata) {
if (gpio_is_valid(pdata->gpio_power))
gpio_set_value(pdata->gpio_power, 0);
if (gpio_is_valid(pdata->gpio_npdn))
gpio_free(pdata->gpio_npdn);
}
err_gpio:
if (pdata && gpio_is_valid(pdata->gpio_power))
gpio_free(pdata->gpio_power);
err_out:
return ret;
}
static int __devexit ak4641_i2c_remove(struct i2c_client *i2c)
{
struct ak4641_platform_data *pdata = i2c->dev.platform_data;
snd_soc_unregister_codec(&i2c->dev);
if (pdata) {
if (gpio_is_valid(pdata->gpio_power)) {
gpio_set_value(pdata->gpio_power, 0);
gpio_free(pdata->gpio_power);
}
if (gpio_is_valid(pdata->gpio_npdn))
gpio_free(pdata->gpio_npdn);
}
return 0;
}