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ASoC: wm2000: Add regulator support 

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-09-22 18:33:23 -04:00
parent 8fed54aec8
commit a89be93c28
1 changed files with 47 additions and 6 deletions
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53
sound/soc/codecs/wm2000.c
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@ -31,6 +31,7 @@
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/debugfs.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
@ -43,6 +44,14 @@
#include "wm2000.h"
#define WM2000_NUM_SUPPLIES 3
static const char *wm2000_supplies[WM2000_NUM_SUPPLIES] = {
"SPKVDD",
"DBVDD",
"DCVDD",
};
enum wm2000_anc_mode {
ANC_ACTIVE = 0,
ANC_BYPASS = 1,
@ -54,6 +63,8 @@ struct wm2000_priv {
struct i2c_client *i2c;
struct regmap *regmap;
struct regulator_bulk_data supplies[WM2000_NUM_SUPPLIES];
enum wm2000_anc_mode anc_mode;
unsigned int anc_active:1;
@ -126,6 +137,12 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
dev_dbg(&i2c->dev, "Beginning power up\n");
ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
if (!wm2000->mclk_div) {
dev_dbg(&i2c->dev, "Disabling MCLK divider\n");
wm2000_write(i2c, WM2000_REG_SYS_CTL2,
@ -143,12 +160,14 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
WM2000_ANC_ENG_IDLE)) {
dev_err(&i2c->dev, "ANC engine failed to reset\n");
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -ETIMEDOUT;
}
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_BOOT_COMPLETE)) {
dev_err(&i2c->dev, "ANC engine failed to initialise\n");
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -ETIMEDOUT;
}
@ -163,11 +182,13 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
wm2000->anc_download_size);
if (ret < 0) {
dev_err(&i2c->dev, "i2c_transfer() failed: %d\n", ret);
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return ret;
}
if (ret != wm2000->anc_download_size) {
dev_err(&i2c->dev, "i2c_transfer() failed, %d != %d\n",
ret, wm2000->anc_download_size);
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -EIO;
}
@ -201,6 +222,7 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue)
if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
WM2000_STATUS_MOUSE_ACTIVE)) {
dev_err(&i2c->dev, "Timed out waiting for device\n");
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
return -ETIMEDOUT;
}
@ -238,6 +260,8 @@ static int wm2000_power_down(struct i2c_client *i2c, int analogue)
return -ETIMEDOUT;
}
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
dev_dbg(&i2c->dev, "powered off\n");
wm2000->anc_mode = ANC_OFF;
@ -747,7 +771,7 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
struct wm2000_platform_data *pdata;
const char *filename;
const struct firmware *fw = NULL;
int ret;
int ret, i;
int reg;
u16 id;
@ -768,6 +792,22 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
goto out;
}
for (i = 0; i < WM2000_NUM_SUPPLIES; i++)
wm2000->supplies[i].supply = wm2000_supplies[i];
ret = devm_regulator_bulk_get(&i2c->dev, WM2000_NUM_SUPPLIES,
wm2000->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to get supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
/* Verify that this is a WM2000 */
reg = wm2000_read(i2c, WM2000_REG_ID1);
id = reg << 8;
@ -777,7 +817,7 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
if (id != 0x2000) {
dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id);
ret = -ENODEV;
goto out;
goto err_supplies;
}
reg = wm2000_read(i2c, WM2000_REG_REVISON);
@ -796,7 +836,7 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
ret = request_firmware(&fw, filename, &i2c->dev);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret);
goto out;
goto err_supplies;
}
/* Pre-cook the concatenation of the register address onto the image */
@ -807,7 +847,7 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
if (wm2000->anc_download == NULL) {
dev_err(&i2c->dev, "Out of memory\n");
ret = -ENOMEM;
goto out;
goto err_supplies;
}
wm2000->anc_download[0] = 0x80;
@ -822,8 +862,9 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
wm2000_reset(wm2000);
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000, NULL, 0);
if (!ret)
goto out;
err_supplies:
regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
out:
release_firmware(fw);