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Code Issues Releases Wiki Activity

ASoC: wm8731: initialize the hardware when loading the codec driver

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This patch moves the requesting supplies, hardware reset and
initialization from wm8731_probe to wm8731_i2c_probe and wm8731_spi_probe.
So that the codec hardware is initialized when loading the codec driver,
and not when loading the machine driver. This avoids unnecesary hardware
resets and re-initializations when re-loading the machine driver.

Signed-off-by: Sergey Kiselev <sergey.kiselev@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sergey Kiselev 2015-06-05 11:55:27 -07:00 committed by Mark Brown
parent d770e558e2
commit 6702dfcc57
1 changed files with 42 additions and 32 deletions
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74
sound/soc/codecs/wm8731.c
View file

@ -84,7 +84,7 @@ static bool wm8731_writeable(struct device *dev, unsigned int reg)
return reg <= WM8731_RESET;
}
#define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0)
#define wm8731_reset(m) regmap_write(m, WM8731_RESET, 0)
static const char *wm8731_input_select[] = {"Line In", "Mic"};
@ -571,69 +571,63 @@ static struct snd_soc_dai_driver wm8731_dai = {
.symmetric_rates = 1,
};
static int wm8731_probe(struct snd_soc_codec *codec)
static int wm8731_request_supplies(struct device *dev,
struct wm8731_priv *wm8731)
{
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
int ret = 0, i;
for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
wm8731->supplies[i].supply = wm8731_supply_names[i];
ret = devm_regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies),
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
dev_err(dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
dev_err(dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
ret = wm8731_reset(codec);
return 0;
}
static int wm8731_hw_init(struct device *dev, struct wm8731_priv *wm8731)
{
int ret = 0;
ret = wm8731_reset(wm8731->regmap);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
dev_err(dev, "Failed to issue reset: %d\n", ret);
goto err_regulator_enable;
}
snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Clear POWEROFF, keep everything else disabled */
regmap_write(wm8731->regmap, WM8731_PWR, 0x7f);
/* Latch the update bits */
snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0);
snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0);
snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0);
snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0);
regmap_update_bits(wm8731->regmap, WM8731_LOUT1V, 0x100, 0);
regmap_update_bits(wm8731->regmap, WM8731_ROUT1V, 0x100, 0);
regmap_update_bits(wm8731->regmap, WM8731_LINVOL, 0x100, 0);
regmap_update_bits(wm8731->regmap, WM8731_RINVOL, 0x100, 0);
/* Disable bypass path by default */
snd_soc_update_bits(codec, WM8731_APANA, 0x8, 0);
regmap_update_bits(wm8731->regmap, WM8731_APANA, 0x8, 0);
/* Regulators will have been enabled by bias management */
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
return 0;
regcache_mark_dirty(wm8731->regmap);
err_regulator_enable:
/* Regulators will be enabled by bias management */
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
return ret;
}
/* power down chip */
static int wm8731_remove(struct snd_soc_codec *codec)
{
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
.probe = wm8731_probe,
.remove = wm8731_remove,
.set_bias_level = wm8731_set_bias_level,
.suspend_bias_off = true,
@ -690,6 +684,12 @@ static int wm8731_spi_probe(struct spi_device *spi)
mutex_init(&wm8731->lock);
spi_set_drvdata(spi, wm8731);
ret = wm8731_request_supplies(&spi->dev, wm8731);
if (ret != 0)
return ret;
wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
if (IS_ERR(wm8731->regmap)) {
ret = PTR_ERR(wm8731->regmap);
@ -698,7 +698,9 @@ static int wm8731_spi_probe(struct spi_device *spi)
return ret;
}
spi_set_drvdata(spi, wm8731);
ret = wm8731_hw_init(&spi->dev, wm8731);
if (ret != 0)
return ret;
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8731, &wm8731_dai, 1);
@ -754,6 +756,12 @@ static int wm8731_i2c_probe(struct i2c_client *i2c,
mutex_init(&wm8731->lock);
i2c_set_clientdata(i2c, wm8731);
ret = wm8731_request_supplies(&i2c->dev, wm8731);
if (ret != 0)
return ret;
wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
if (IS_ERR(wm8731->regmap)) {
ret = PTR_ERR(wm8731->regmap);
@ -762,7 +770,9 @@ static int wm8731_i2c_probe(struct i2c_client *i2c,
return ret;
}
i2c_set_clientdata(i2c, wm8731);
ret = wm8731_hw_init(&i2c->dev, wm8731);
if (ret != 0)
return ret;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8731, &wm8731_dai, 1);