ALSA: aureon - Patch for suspend/resume for Terratec Aureon cards.

Add proper suspend/resume code for Terratec Aureon cards.
Based on ice1724 suspend/resume work of Igor Chernyshev.
Fixes bug https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4944
Tested on linux-2.6.32.9

Signed-off-by: Bernhard Urban <lewurm@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 64 insertions, 25 deletions

diff --git a/sound/pci/ice1712/aureon.c b/sound/pci/ice1712/aureon.c
index 9e66f6d306f8..2f6252266a02 100644
--- a/sound/pci/ice1712/aureon.c
+++ b/sound/pci/ice1712/aureon.c
@@ -1956,11 +1956,10 @@ static int __devinit aureon_add_controls(struct snd_ice1712 *ice)
         return 0;
 }
 
-
 /*
- * initialize the chip
+ * reset the chip
  */
-static int __devinit aureon_init(struct snd_ice1712 *ice)
+static int aureon_reset(struct snd_ice1712 *ice)
 {
         static const unsigned short wm_inits_aureon[] = {
                 /* These come first to reduce init pop noise */
@@ -2047,30 +2046,10 @@ static int __devinit aureon_init(struct snd_ice1712 *ice)
                 0x0605, /* slave, 24bit, MSB on second OSCLK, SDOUT for right channel when OLRCK is high */
                 (unsigned short)-1
         };
-        struct aureon_spec *spec;
         unsigned int tmp;
         const unsigned short *p;
-        int err, i;
-
-        spec = kzalloc(sizeof(*spec), GFP_KERNEL);
-        if (!spec)
-                return -ENOMEM;
-        ice->spec = spec;
-
-        if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AUREON51_SKY) {
-                ice->num_total_dacs = 6;
-                ice->num_total_adcs = 2;
-        } else {
-                /* aureon 7.1 and prodigy 7.1 */
-                ice->num_total_dacs = 8;
-                ice->num_total_adcs = 2;
-        }
-
-        /* to remeber the register values of CS8415 */
-        ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
-        if (!ice->akm)
-                return -ENOMEM;
-        ice->akm_codecs = 1;
+        int err;
+        struct aureon_spec *spec = ice->spec;
 
         err = aureon_ac97_init(ice);
         if (err != 0)
@@ -2118,6 +2097,61 @@ static int __devinit aureon_init(struct snd_ice1712 *ice)
         /* initialize PCA9554 pin directions & set default input */
         aureon_pca9554_write(ice, PCA9554_DIR, 0x00);
         aureon_pca9554_write(ice, PCA9554_OUT, 0x00);   /* internal AUX */
+        return 0;
+}
+
+/*
+ * suspend/resume
+ */
+#ifdef CONFIG_PM
+static int aureon_resume(struct snd_ice1712 *ice)
+{
+        struct aureon_spec *spec = ice->spec;
+        int err, i;
+
+        err = aureon_reset(ice);
+        if (err != 0)
+                return err;
+
+        /* workaround for poking volume with alsamixer after resume:
+         * just set stored volume again */
+        for (i = 0; i < ice->num_total_dacs; i++)
+                wm_set_vol(ice, i, spec->vol[i], spec->master[i % 2]);
+        return 0;
+}
+#endif
+
+/*
+ * initialize the chip
+ */
+static int __devinit aureon_init(struct snd_ice1712 *ice)
+{
+        struct aureon_spec *spec;
+        int i, err;
+
+        spec = kzalloc(sizeof(*spec), GFP_KERNEL);
+        if (!spec)
+                return -ENOMEM;
+        ice->spec = spec;
+
+        if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AUREON51_SKY) {
+                ice->num_total_dacs = 6;
+                ice->num_total_adcs = 2;
+        } else {
+                /* aureon 7.1 and prodigy 7.1 */
+                ice->num_total_dacs = 8;
+                ice->num_total_adcs = 2;
+        }
+
+        /* to remeber the register values of CS8415 */
+        ice->akm = kzalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
+        if (!ice->akm)
+                return -ENOMEM;
+        ice->akm_codecs = 1;
+
+        err = aureon_reset(ice);
+        if (err != 0)
+                return err;
 
         spec->master[0] = WM_VOL_MUTE;
         spec->master[1] = WM_VOL_MUTE;
@@ -2126,6 +2160,11 @@ static int __devinit aureon_init(struct snd_ice1712 *ice)
                 wm_set_vol(ice, i, spec->vol[i], spec->master[i % 2]);
         }
 
+#ifdef CONFIG_PM
+        ice->pm_resume = aureon_resume;
+        ice->pm_suspend_enabled = 1;
+#endif
+
         return 0;
 }