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| author | Takashi Iwai <tiwai@suse.de> | 2008-06-27 11:55:20 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-07-10 09:31:34 +0200 |
| commit | 6cabf6b0694951288520512e0b68c78523acc9fd (patch) | |
| tree | 440077c185ad3e7923ce20cc5d615b6d85543b01 /sound/pci/ac97/ac97_codec.c | |
| parent | 942fd1ebf6072fdaa07ae6d77a4f58b39c1bfdf9 (diff) | |
| download | linux-6cabf6b0694951288520512e0b68c78523acc9fd.tar.gz | |
ALSA: Fix AC97 power down
Some laptops don't like PR3 powerdown. Do PR3 powerdown only for the real power-saving. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/pci/ac97/ac97_codec.c')
| -rw-r--r-- | sound/pci/ac97/ac97_codec.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c index 2d2f16e11082..07364c00768a 100644 --- a/sound/pci/ac97/ac97_codec.c +++ b/sound/pci/ac97/ac97_codec.c @@ -2295,9 +2295,11 @@ static void snd_ac97_powerdown(struct snd_ac97 *ac97) power |= AC97_PD_PR0 | AC97_PD_PR1; /* ADC & DAC powerdown */ snd_ac97_write(ac97, AC97_POWERDOWN, power); udelay(100); - power |= AC97_PD_PR2 | AC97_PD_PR3; /* Analog Mixer powerdown */ + power |= AC97_PD_PR2; /* Analog Mixer powerdown (Vref on) */ snd_ac97_write(ac97, AC97_POWERDOWN, power); if (ac97_is_power_save_mode(ac97)) { + power |= AC97_PD_PR3; /* Analog Mixer powerdown */ + snd_ac97_write(ac97, AC97_POWERDOWN, power); udelay(100); /* AC-link powerdown, internal Clk disable */ /* FIXME: this may cause click noises on some boards */ |