diff options
| author | Takashi Iwai <tiwai@suse.de> | 2005-11-17 16:13:05 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-01-03 12:27:55 +0100 |
| commit | 11d3824ad7d6240d7ce44bdf1d9e81e62a903f72 (patch) | |
| tree | 14561c3817dfb06bf4b59c77beaa86fc41bf88d7 /sound/pci/ac97/ak4531_codec.c | |
| parent | 3fcf7d2cd8e0ebce10e4bf89da175ff9bd6aa2da (diff) | |
| download | linux-11d3824ad7d6240d7ce44bdf1d9e81e62a903f72.tar.bz2 | |
[ALSA] ak4531 - Add PM support
Modules: AK4531 codec
Add PM support to AK4531 codec driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ac97/ak4531_codec.c')
| -rw-r--r-- | sound/pci/ac97/ak4531_codec.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/sound/pci/ac97/ak4531_codec.c b/sound/pci/ac97/ak4531_codec.c index 088d8dc336be..3eb885584e9a 100644 --- a/sound/pci/ac97/ak4531_codec.c +++ b/sound/pci/ac97/ak4531_codec.c @@ -371,7 +371,7 @@ int snd_ak4531_mixer(struct snd_card *card, struct snd_ak4531 *_ak4531, ak4531->write(ak4531, AK4531_RESET, 0x03); /* no RST, PD */ udelay(100); ak4531->write(ak4531, AK4531_CLOCK, 0x00); /* CODEC ADC and CODEC DAC use {LR,B}CLK2 and run off LRCLK2 PLL */ - for (idx = 0; idx < 0x19; idx++) { + for (idx = 0; idx <= 0x19; idx++) { if (idx == AK4531_RESET || idx == AK4531_CLOCK) continue; ak4531->write(ak4531, idx, ak4531->regs[idx] = snd_ak4531_initial_map[idx]); /* recording source is mixer */ @@ -396,6 +396,36 @@ int snd_ak4531_mixer(struct snd_card *card, struct snd_ak4531 *_ak4531, } /* + * power management + */ +#ifdef CONFIG_PM +void snd_ak4531_suspend(struct snd_ak4531 *ak4531) +{ + /* mute */ + ak4531->write(ak4531, AK4531_LMASTER, 0x9f); + ak4531->write(ak4531, AK4531_RMASTER, 0x9f); + /* powerdown */ + ak4531->write(ak4531, AK4531_RESET, 0x01); +} + +void snd_ak4531_resume(struct snd_ak4531 *ak4531) +{ + int idx; + + /* initialize */ + ak4531->write(ak4531, AK4531_RESET, 0x03); + udelay(100); + ak4531->write(ak4531, AK4531_CLOCK, 0x00); + /* restore mixer registers */ + for (idx = 0; idx <= 0x19; idx++) { + if (idx == AK4531_RESET || idx == AK4531_CLOCK) + continue; + ak4531->write(ak4531, idx, ak4531->regs[idx]); + } +} +#endif + +/* */ @@ -420,6 +450,10 @@ static void snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak453 } EXPORT_SYMBOL(snd_ak4531_mixer); +#ifdef CONFIG_PM +EXPORT_SYMBOL(snd_ak4531_suspend); +EXPORT_SYMBOL(snd_ak4531_resume); +#endif /* * INIT part |