ALSA: ice1724 - Patch for suspend/resume for ESI Juli@

Add proper suspend/resume code for Juli@ cards. Based on ice1724
suspend/resume work of Igor Chernyshev.
Fixes bug https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4413
Tested on linux-2.6.31.6

Signed-off-by: Aleksey Kunitskiy <alexey.kv@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 32 insertions, 0 deletions

diff --git a/sound/pci/ice1712/juli.c b/sound/pci/ice1712/juli.c
index fd948bfd9aef..f5020ad99a10 100644
--- a/sound/pci/ice1712/juli.c
+++ b/sound/pci/ice1712/juli.c
@@ -504,6 +504,31 @@ static int __devinit juli_add_controls(struct snd_ice1712 *ice)
 }
 
 /*
+ * suspend/resume
+ * */
+
+#ifdef CONFIG_PM
+static int juli_resume(struct snd_ice1712 *ice)
+{
+        struct snd_akm4xxx *ak = ice->akm;
+        struct juli_spec *spec = ice->spec;
+        /* akm4358 un-reset, un-mute */
+        snd_akm4xxx_reset(ak, 0);
+        /* reinit ak4114 */
+        snd_ak4114_reinit(spec->ak4114);
+        return 0;
+}
+
+static int juli_suspend(struct snd_ice1712 *ice)
+{
+        struct snd_akm4xxx *ak = ice->akm;
+        /* akm4358 reset and soft-mute */
+        snd_akm4xxx_reset(ak, 1);
+        return 0;
+}
+#endif
+
+/*
  * initialize the chip
  */
 
@@ -646,6 +671,13 @@ static int __devinit juli_init(struct snd_ice1712 *ice)
         ice->set_spdif_clock = juli_set_spdif_clock;
 
         ice->spdif.ops.open = juli_spdif_in_open;
+
+#ifdef CONFIG_PM
+        ice->pm_resume = juli_resume;
+        ice->pm_suspend = juli_suspend;
+        ice->pm_suspend_enabled = 1;
+#endif
+
         return 0;
 }