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ASoC: Add regulator support for WM8731

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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2009-10-26 15:20:17 +00:00
parent 7a1fecf57f
commit 7dea7c01da
1 changed files with 47 additions and 4 deletions
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51
sound/soc/codecs/wm8731.c
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@ -19,6 +19,7 @@
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <sound/core.h>
#include <sound/pcm.h>
@ -33,9 +34,18 @@
static struct snd_soc_codec *wm8731_codec;
struct snd_soc_codec_device soc_codec_dev_wm8731;
#define WM8731_NUM_SUPPLIES 4
static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
"AVDD",
"HPVDD",
"DCVDD",
"DBVDD",
};
/* codec private data */
struct wm8731_priv {
struct snd_soc_codec codec;
struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
u16 reg_cache[WM8731_CACHEREGNUM];
unsigned int sysclk;
};
@ -422,9 +432,12 @@ static int wm8731_suspend(struct platform_device *pdev, pm_message_t state)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
struct wm8731_priv *wm8731 = codec->private_data;
snd_soc_write(codec, WM8731_ACTIVE, 0x0);
wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
return 0;
}
@ -432,10 +445,16 @@ static int wm8731_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
int i;
struct wm8731_priv *wm8731 = codec->private_data;
int i, ret;
u8 data[2];
u16 *cache = codec->reg_cache;
ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
if (ret != 0)
return ret;
/* Sync reg_cache with the hardware */
for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) {
data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
@ -444,6 +463,7 @@ static int wm8731_resume(struct platform_device *pdev)
}
wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
wm8731_set_bias_level(codec, codec->suspend_bias_level);
return 0;
}
#else
@ -512,7 +532,7 @@ EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731);
static int wm8731_register(struct wm8731_priv *wm8731,
enum snd_soc_control_type control)
{
int ret;
int ret, i;
struct snd_soc_codec *codec = &wm8731->codec;
if (wm8731_codec) {
@ -543,10 +563,27 @@ static int wm8731_register(struct wm8731_priv *wm8731,
goto err;
}
for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
wm8731->supplies[i].supply = wm8731_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
goto err;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_regulator_get;
}
ret = wm8731_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
goto err;
goto err_regulator_enable;
}
wm8731_dai.dev = codec->dev;
@ -567,7 +604,7 @@ static int wm8731_register(struct wm8731_priv *wm8731,
ret = snd_soc_register_codec(codec);
if (ret != 0) {
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
goto err;
goto err_regulator_enable;
}
ret = snd_soc_register_dai(&wm8731_dai);
@ -581,6 +618,10 @@ static int wm8731_register(struct wm8731_priv *wm8731,
err_codec:
snd_soc_unregister_codec(codec);
err_regulator_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
err_regulator_get:
regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
err:
kfree(wm8731);
return ret;
@ -591,6 +632,8 @@ static void wm8731_unregister(struct wm8731_priv *wm8731)
wm8731_set_bias_level(&wm8731->codec, SND_SOC_BIAS_OFF);
snd_soc_unregister_dai(&wm8731_dai);
snd_soc_unregister_codec(&wm8731->codec);
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
kfree(wm8731);
wm8731_codec = NULL;
}