diff options
| -rw-r--r-- | sound/soc/codecs/wm8961.c | 60 |
1 files changed, 33 insertions, 27 deletions
diff --git a/sound/soc/codecs/wm8961.c b/sound/soc/codecs/wm8961.c index 4ea64d6e..f387670 100644 --- a/sound/soc/codecs/wm8961.c +++ b/sound/soc/codecs/wm8961.c @@ -187,11 +187,6 @@ static bool wm8961_readable(struct device *dev, unsigned int reg) } } -static int wm8961_reset(struct snd_soc_codec *codec) -{ - return snd_soc_write(codec, WM8961_SOFTWARE_RESET, 0); -} - /* * The headphone output supports special anti-pop sequences giving * silent power up and power down. @@ -840,7 +835,6 @@ static struct snd_soc_dai_driver wm8961_dai = { static int wm8961_probe(struct snd_soc_codec *codec) { - struct wm8961_priv *wm8961 = snd_soc_codec_get_drvdata(codec); struct snd_soc_dapm_context *dapm = &codec->dapm; int ret = 0; u16 reg; @@ -851,27 +845,6 @@ static int wm8961_probe(struct snd_soc_codec *codec) return ret; } - reg = snd_soc_read(codec, WM8961_SOFTWARE_RESET); - if (reg != 0x1801) { - dev_err(codec->dev, "Device is not a WM8961: ID=0x%x\n", reg); - return -EINVAL; - } - - /* This isn't volatile - readback doesn't correspond to write */ - regcache_cache_bypass(wm8961->regmap, true); - reg = snd_soc_read(codec, WM8961_RIGHT_INPUT_VOLUME); - regcache_cache_bypass(wm8961->regmap, false); - dev_info(codec->dev, "WM8961 family %d revision %c\n", - (reg & WM8961_DEVICE_ID_MASK) >> WM8961_DEVICE_ID_SHIFT, - ((reg & WM8961_CHIP_REV_MASK) >> WM8961_CHIP_REV_SHIFT) - + 'A'); - - ret = wm8961_reset(codec); - if (ret < 0) { - dev_err(codec->dev, "Failed to issue reset\n"); - return ret; - } - /* Enable class W */ reg = snd_soc_read(codec, WM8961_CHARGE_PUMP_B); reg |= WM8961_CP_DYN_PWR_MASK; @@ -968,6 +941,7 @@ static __devinit int wm8961_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct wm8961_priv *wm8961; + unsigned int val; int ret; wm8961 = devm_kzalloc(&i2c->dev, sizeof(struct wm8961_priv), @@ -979,6 +953,38 @@ static __devinit int wm8961_i2c_probe(struct i2c_client *i2c, if (IS_ERR(wm8961->regmap)) return PTR_ERR(wm8961->regmap); + ret = regmap_read(wm8961->regmap, WM8961_SOFTWARE_RESET, &val); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to read chip ID: %d\n", ret); + return ret; + } + + if (val != 0x1801) { + dev_err(&i2c->dev, "Device is not a WM8961: ID=0x%x\n", val); + return -EINVAL; + } + + /* This isn't volatile - readback doesn't correspond to write */ + regcache_cache_bypass(wm8961->regmap, true); + ret = regmap_read(wm8961->regmap, WM8961_RIGHT_INPUT_VOLUME, &val); + regcache_cache_bypass(wm8961->regmap, false); + + if (ret != 0) { + dev_err(&i2c->dev, "Failed to read chip revision: %d\n", ret); + return ret; + } + + dev_info(&i2c->dev, "WM8961 family %d revision %c\n", + (val & WM8961_DEVICE_ID_MASK) >> WM8961_DEVICE_ID_SHIFT, + ((val & WM8961_CHIP_REV_MASK) >> WM8961_CHIP_REV_SHIFT) + + 'A'); + + ret = regmap_write(wm8961->regmap, WM8961_SOFTWARE_RESET, 0x1801); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret); + return ret; + } + i2c_set_clientdata(i2c, wm8961); ret = snd_soc_register_codec(&i2c->dev, |