commit 11d3824ad7d6240d7ce44bdf1d9e81e62a903f72
author Takashi Iwai <tiwai@suse.de> Thu Nov 17 16:13:05 2005 +0100
committer Jaroslav Kysela <perex@suse.cz> Tue Jan 03 12:27:55 2006 +0100
tree 14561c3817dfb06bf4b59c77beaa86fc41bf88d7
parent 3fcf7d2cd8e0ebce10e4bf89da175ff9bd6aa2da

[ALSA] ak4531 - Add PM support

Modules: AK4531 codec

Add PM support to AK4531 codec driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ac97/ak4531_codec.c

diff --git a/sound/pci/ac97/ak4531_codec.c b/sound/pci/ac97/ak4531_codec.c
index 088d8dc..3eb8855 100644
--- a/sound/pci/ac97/ak4531_codec.c
+++ b/sound/pci/ac97/ak4531_codec.c
@@ -371,7 +371,7 @@
 	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 @@
 }
 
 /*
+ * 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 @@
 }
 
 EXPORT_SYMBOL(snd_ak4531_mixer);
+#ifdef CONFIG_PM
+EXPORT_SYMBOL(snd_ak4531_suspend);
+EXPORT_SYMBOL(snd_ak4531_resume);
+#endif
 
 /*
  *  INIT part