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Commit 11d3824a authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
Browse files

[ALSA] ak4531 - Add PM support 



Modules: AK4531 codec

Add PM support to AK4531 codec driver.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 3fcf7d2c

include/sound/ak4531_codec.h

+5 −0
Original line number Diff line number Diff line
@@ -77,4 +77,9 @@ struct snd_ak4531 { 
int snd_ak4531_mixer(struct snd_card *card, struct snd_ak4531 *_ak4531,

		     struct snd_ak4531 **rak4531);



#ifdef CONFIG_PM

void snd_ak4531_suspend(struct snd_ak4531 *ak4531);

void snd_ak4531_resume(struct snd_ak4531 *ak4531);

#endif



#endif /* __SOUND_AK4531_CODEC_H */

sound/pci/ac97/ak4531_codec.c

+35 −1
Original line number Diff line number Diff line
@@ -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 */
@@ -395,6 +395,36 @@ int snd_ak4531_mixer(struct snd_card *card, struct snd_ak4531 *_ak4531, 
	return 0;

}



/*

 * 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