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ALSA: ice1712: Add suspend support for M-Audio ICE1712-based cards 

Add suspend support for M-Audio cards based on ICE1712 chip.
Tested with M-Audio Audiophile 24/96. S/PDIF will probably not work.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Ondrej Zary 2014-03-30 23:37:31 +02:00 committed by Takashi Iwai
parent ca051e8a67
commit 8c1d843460
1 changed files with 29 additions and 1 deletions
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30
sound/pci/ice1712/delta.c
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@ -576,6 +576,30 @@ static struct snd_ak4xxx_private akm_vx442_priv = {
.mask_flags = 0,
};
#ifdef CONFIG_PM_SLEEP
static int snd_ice1712_delta_resume(struct snd_ice1712 *ice)
{
unsigned char akm_backup[AK4XXX_IMAGE_SIZE];
/* init codec and restore registers */
if (ice->akm_codecs) {
memcpy(akm_backup, ice->akm->images, sizeof(akm_backup));
snd_akm4xxx_init(ice->akm);
memcpy(ice->akm->images, akm_backup, sizeof(akm_backup));
snd_akm4xxx_reset(ice->akm, 0);
}
return 0;
}
static int snd_ice1712_delta_suspend(struct snd_ice1712 *ice)
{
if (ice->akm_codecs) /* reset & mute codec */
snd_akm4xxx_reset(ice->akm, 1);
return 0;
}
#endif
static int snd_ice1712_delta_init(struct snd_ice1712 *ice)
{
int err;
@ -622,7 +646,11 @@ static int snd_ice1712_delta_init(struct snd_ice1712 *ice)
ice->num_total_adcs = 4;
break;
}
#ifdef CONFIG_PM_SLEEP
ice->pm_resume = snd_ice1712_delta_resume;
ice->pm_suspend = snd_ice1712_delta_suspend;
ice->pm_suspend_enabled = 1;
#endif
/* initialize the SPI clock to high */
tmp = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA);
tmp |= ICE1712_DELTA_AP_CCLK;