aboutsummaryrefslogtreecommitdiff
path: root/sound/pci/ac97/ak4531_codec.c
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2005-11-17 16:13:05 +0100
committerJaroslav Kysela <perex@suse.cz>2006-01-03 12:27:55 +0100
commit11d3824ad7d6240d7ce44bdf1d9e81e62a903f72 (patch)
tree14561c3817dfb06bf4b59c77beaa86fc41bf88d7 /sound/pci/ac97/ak4531_codec.c
parent3fcf7d2cd8e0ebce10e4bf89da175ff9bd6aa2da (diff)
downloadleg-kernel-11d3824ad7d6240d7ce44bdf1d9e81e62a903f72.tar.gz
[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.c36
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