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>
diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index 3c9336c..e97b3f4 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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;