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ASoC: Initial WM8993 regulator API hookup 

At the minute the regulators are simply enabled for the entire
lifetime of the device.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Mark Brown 2010-02-03 11:51:42 +00:00
parent 3bf6e4217e
commit b37e399bfc
1 changed files with 38 additions and 3 deletions
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41
sound/soc/codecs/wm8993.c
View File

@ -16,6 +16,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <sound/core.h>
#include <sound/pcm.h>
@ -29,6 +30,16 @@
#include "wm8993.h"
#include "wm_hubs.h"
#define WM8993_NUM_SUPPLIES 6
static const char *wm8993_supply_names[WM8993_NUM_SUPPLIES] = {
"DCVDD",
"DBVDD",
"AVDD1",
"AVDD2",
"CPVDD",
"SPKVDD",
};
static u16 wm8993_reg_defaults[WM8993_REGISTER_COUNT] = {
0x8993, /* R0 - Software Reset */
0x0000, /* R1 - Power Management (1) */
@ -215,6 +226,7 @@ static struct {
struct wm8993_priv {
struct wm_hubs_data hubs_data;
u16 reg_cache[WM8993_REGISTER_COUNT];
struct regulator_bulk_data supplies[WM8993_NUM_SUPPLIES];
struct wm8993_platform_data pdata;
struct snd_soc_codec codec;
int master;
@ -1496,6 +1508,7 @@ static int wm8993_i2c_probe(struct i2c_client *i2c,
struct snd_soc_codec *codec;
unsigned int val;
int ret;
int i;
if (wm8993_codec) {
dev_err(&i2c->dev, "A WM8993 is already registered\n");
@ -1543,16 +1556,33 @@ static int wm8993_i2c_probe(struct i2c_client *i2c,
codec->dev = &i2c->dev;
for (i = 0; i < ARRAY_SIZE(wm8993->supplies); i++)
wm8993->supplies[i].supply = wm8993_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8993->supplies),
wm8993->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
goto err;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8993->supplies),
wm8993->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_get;
}
val = snd_soc_read(codec, WM8993_SOFTWARE_RESET);
if (val != wm8993_reg_defaults[WM8993_SOFTWARE_RESET]) {
dev_err(codec->dev, "Invalid ID register value %x\n", val);
ret = -EINVAL;
goto err;
goto err_enable;
}
ret = snd_soc_write(codec, WM8993_SOFTWARE_RESET, 0xffff);
if (ret != 0)
goto err;
goto err_enable;
/* By default we're using the output mixers */
wm8993->class_w_users = 2;
@ -1582,7 +1612,7 @@ static int wm8993_i2c_probe(struct i2c_client *i2c,
ret = wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
if (ret != 0)
goto err;
goto err_enable;
wm8993_dai.dev = codec->dev;
@ -1596,6 +1626,10 @@ static int wm8993_i2c_probe(struct i2c_client *i2c,
err_bias:
wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
err_get:
regulator_bulk_free(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
err:
wm8993_codec = NULL;
kfree(wm8993);
@ -1610,6 +1644,7 @@ static int wm8993_i2c_remove(struct i2c_client *client)
snd_soc_unregister_dai(&wm8993_dai);
wm8993_set_bias_level(&wm8993->codec, SND_SOC_BIAS_OFF);
regulator_bulk_free(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
kfree(wm8993);
return 0;