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authorOndrej Zary <linux@rainbow-software.org>2014-03-30 23:37:31 +0200
committerTakashi Iwai <tiwai@suse.de>2014-03-31 12:26:57 +0200
commit8c1d843460f42417d6b9553147a1a04ca1470602 (patch)
treebe6c79efd71bc1f4a67e82512021b49ff91aa026 /sound/pci
parentca051e8a678b22f507a9e10fa536e1d9337d8b0d (diff)
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>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/ice1712/delta.c30
1 files changed, 29 insertions, 1 deletions
diff --git a/sound/pci/ice1712/delta.c b/sound/pci/ice1712/delta.c
index 98e5e955261e..ed2144eee38a 100644
--- a/sound/pci/ice1712/delta.c
+++ b/sound/pci/ice1712/delta.c
@@ -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;