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>
diff --git a/sound/pci/ice1712/delta.c b/sound/pci/ice1712/delta.c
index 98e5e95..ed2144e 100644
--- a/sound/pci/ice1712/delta.c
+++ b/sound/pci/ice1712/delta.c
@@ -576,6 +576,30 @@
.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 @@
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;