diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-12 22:37:03 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-15 06:13:06 +0400 |
| commit | da157875cd6f3f282b9404e35d1507d8bbbd4c34 (patch) | |
| tree | 46c7a7f90da8eed5f0139430299f0743601c0eb2 /sound/soc/codecs | |
| parent | 68fcde97e42af0ddd4a3665aeec0f5286577f0b5 (diff) | |
| download | linux-da157875cd6f3f282b9404e35d1507d8bbbd4c34.tar.xz | |
ASoC: wm9081: Use idle_bias_off
The main role of the WM9081 is as a class D speaker amplifier so there
is no concern about pops. There are also very few registers and a fast
power up time so we can happily mark the driver as idle_bias_off.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs')
| -rw-r--r-- | sound/soc/codecs/wm9081.c | 35 |
1 files changed, 10 insertions, 25 deletions
diff --git a/sound/soc/codecs/wm9081.c b/sound/soc/codecs/wm9081.c index c4b3fd923f28..076c126ed9b1 100644 --- a/sound/soc/codecs/wm9081.c +++ b/sound/soc/codecs/wm9081.c @@ -824,6 +824,8 @@ static const struct snd_soc_dapm_route wm9081_audio_paths[] = { static int wm9081_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { + struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); + switch (level) { case SND_SOC_BIAS_ON: break; @@ -841,6 +843,9 @@ static int wm9081_set_bias_level(struct snd_soc_codec *codec, case SND_SOC_BIAS_STANDBY: /* Initial cold start */ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { + regcache_cache_only(wm9081->regmap, false); + regcache_sync(wm9081->regmap); + /* Disable LINEOUT discharge */ snd_soc_update_bits(codec, WM9081_ANTI_POP_CONTROL, WM9081_LINEOUT_DISCH, 0); @@ -892,6 +897,8 @@ static int wm9081_set_bias_level(struct snd_soc_codec *codec, snd_soc_update_bits(codec, WM9081_ANTI_POP_CONTROL, WM9081_LINEOUT_DISCH, WM9081_LINEOUT_DISCH); + + regcache_cache_only(wm9081->regmap, true); break; } @@ -1289,38 +1296,15 @@ static int wm9081_remove(struct snd_soc_codec *codec) return 0; } -#ifdef CONFIG_PM -static int wm9081_suspend(struct snd_soc_codec *codec) -{ - wm9081_set_bias_level(codec, SND_SOC_BIAS_OFF); - - return 0; -} - -static int wm9081_resume(struct snd_soc_codec *codec) -{ - struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec); - - regcache_sync(wm9081->regmap); - - wm9081_set_bias_level(codec, SND_SOC_BIAS_STANDBY); - - return 0; -} -#else -#define wm9081_suspend NULL -#define wm9081_resume NULL -#endif - static struct snd_soc_codec_driver soc_codec_dev_wm9081 = { .probe = wm9081_probe, .remove = wm9081_remove, - .suspend = wm9081_suspend, - .resume = wm9081_resume, .set_sysclk = wm9081_set_sysclk, .set_bias_level = wm9081_set_bias_level, + .idle_bias_off = true, + .controls = wm9081_snd_controls, .num_controls = ARRAY_SIZE(wm9081_snd_controls), .dapm_widgets = wm9081_dapm_widgets, @@ -1392,6 +1376,7 @@ static __devinit int wm9081_i2c_probe(struct i2c_client *i2c, regmap_update_bits(wm9081->regmap, WM9081_INTERRUPT_CONTROL, WM9081_IRQ_POL | WM9081_IRQ_OP_CTRL, reg); + regcache_cache_only(wm9081->regmap, true); ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm9081, &wm9081_dai, 1); |