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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-06-09 05:41:58 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-06-25 10:53:52 +0200
commit03862cf62ea36d6cf3d94eee84b89578cbcf0213 (patch)
treea5fdf88e310b3117f33777e3675ba49ea66c1e51 /sound
parentASoC: wm8904: Rely entirely on the core for bias level management (diff)
downloadlinux-03862cf62ea36d6cf3d94eee84b89578cbcf0213.tar.xz
linux-03862cf62ea36d6cf3d94eee84b89578cbcf0213.zip
ASoC: wm8904: Move regulator acquisition and device identification to I2C
It's more idiomatic to have the resource allocation at this level. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/wm8904.c112
1 files changed, 51 insertions, 61 deletions
diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c
index ecab871573b1..b178232c990c 100644
--- a/sound/soc/codecs/wm8904.c
+++ b/sound/soc/codecs/wm8904.c
@@ -314,11 +314,6 @@ static bool wm8904_readable_register(struct device *dev, unsigned int reg)
}
}
-static int wm8904_reset(struct snd_soc_codec *codec)
-{
- return snd_soc_write(codec, WM8904_SW_RESET_AND_ID, 0);
-}
-
static int wm8904_configure_clocking(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
@@ -2082,52 +2077,6 @@ static int wm8904_probe(struct snd_soc_codec *codec)
return ret;
}
- for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++)
- wm8904->supplies[i].supply = wm8904_supply_names[i];
-
- ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8904->supplies),
- wm8904->supplies);
- if (ret != 0) {
- dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
- return ret;
- }
-
- ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
- wm8904->supplies);
- if (ret != 0) {
- dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
- goto err_get;
- }
-
- ret = snd_soc_read(codec, WM8904_SW_RESET_AND_ID);
- if (ret < 0) {
- dev_err(codec->dev, "Failed to read ID register\n");
- goto err_enable;
- }
- if (ret != 0x8904) {
- dev_err(codec->dev, "Device is not a WM8904, ID is %x\n", ret);
- ret = -EINVAL;
- goto err_enable;
- }
-
- ret = snd_soc_read(codec, WM8904_REVISION);
- if (ret < 0) {
- dev_err(codec->dev, "Failed to read device revision: %d\n",
- ret);
- goto err_enable;
- }
- dev_info(codec->dev, "revision %c\n", ret + 'A');
-
- ret = wm8904_reset(codec);
- if (ret < 0) {
- dev_err(codec->dev, "Failed to issue reset\n");
- goto err_enable;
- }
-
- /* Can leave the device powered off until we need it */
- regcache_cache_only(wm8904->regmap, true);
- regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
-
/* Change some default settings - latch VU and enable ZC */
snd_soc_update_bits(codec, WM8904_ADC_DIGITAL_VOLUME_LEFT,
WM8904_ADC_VU, WM8904_ADC_VU);
@@ -2187,19 +2136,12 @@ static int wm8904_probe(struct snd_soc_codec *codec)
wm8904_add_widgets(codec);
return 0;
-
-err_enable:
- regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
-err_get:
- regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
- return ret;
}
static int wm8904_remove(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
- regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
kfree(wm8904->retune_mobile_texts);
kfree(wm8904->drc_texts);
@@ -2230,7 +2172,8 @@ static __devinit int wm8904_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8904_priv *wm8904;
- int ret;
+ unsigned int val;
+ int ret, i;
wm8904 = devm_kzalloc(&i2c->dev, sizeof(struct wm8904_priv),
GFP_KERNEL);
@@ -2249,14 +2192,61 @@ static __devinit int wm8904_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, wm8904);
wm8904->pdata = i2c->dev.platform_data;
+ for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++)
+ wm8904->supplies[i].supply = wm8904_supply_names[i];
+
+ ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8904->supplies),
+ wm8904->supplies);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
+ wm8904->supplies);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_read(wm8904->regmap, WM8904_SW_RESET_AND_ID, &val);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "Failed to read ID register: %d\n", ret);
+ goto err_enable;
+ }
+ if (val != 0x8904) {
+ dev_err(&i2c->dev, "Device is not a WM8904, ID is %x\n", val);
+ ret = -EINVAL;
+ goto err_enable;
+ }
+
+ ret = regmap_read(wm8904->regmap, WM8904_REVISION, &val);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "Failed to read device revision: %d\n",
+ ret);
+ goto err_enable;
+ }
+ dev_info(&i2c->dev, "revision %c\n", val + 'A');
+
+ ret = regmap_write(wm8904->regmap, WM8904_SW_RESET_AND_ID, 0);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret);
+ goto err_enable;
+ }
+
+ /* Can leave the device powered off until we need it */
+ regcache_cache_only(wm8904->regmap, true);
+ regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
+
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8904, &wm8904_dai, 1);
if (ret != 0)
- goto err;
+ return ret;
return 0;
-err:
+err_enable:
+ regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
return ret;
}