From b37e399bfc7fcb5b523e3e2e74686c8cc95c0cba Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 3 Feb 2010 11:51:42 +0000 Subject: [PATCH] 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 Acked-by: Liam Girdwood --- sound/soc/codecs/wm8993.c | 41 ++++++++++++++++++++++++++++++++++++++--- 1 file changed, 38 insertions(+), 3 deletions(-) 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 #include #include +#include #include #include #include @@ -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; -- 2.7.4