ALSA: virtuoso: initialize unknown GPIO bits

Initialize the configuration of some unknown GPIO output bits (that
might not be used at all) to be the same as in the Windows driver, just
to be sure.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/oxygen/xonar_pcm179x.c b/sound/pci/oxygen/xonar_pcm179x.c
index d491fd6..fe4b265 100644
--- a/sound/pci/oxygen/xonar_pcm179x.c
+++ b/sound/pci/oxygen/xonar_pcm179x.c
@@ -167,12 +167,14 @@
 #define GPIO_INPUT_ROUTE	0x0100
 
 #define GPIO_HDAV_OUTPUT_ENABLE	0x0001
+#define GPIO_HDAV_MAGIC		0x00c0
 
 #define GPIO_DB_MASK		0x0030
 #define GPIO_DB_H6		0x0000
 
 #define GPIO_ST_OUTPUT_ENABLE	0x0001
 #define GPIO_ST_HP_REAR		0x0002
+#define GPIO_ST_MAGIC		0x0040
 #define GPIO_ST_HP		0x0080
 
 #define I2C_DEVICE_PCM1796(i)	(0x98 + ((i) << 1))	/* 10011, ii, /W=0 */
@@ -350,7 +352,8 @@
 
 	pcm1796_init(chip);
 
-	oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_INPUT_ROUTE);
+	oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL,
+			  GPIO_HDAV_MAGIC | GPIO_INPUT_ROUTE);
 	oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_INPUT_ROUTE);
 
 	xonar_init_cs53x1(chip);
@@ -381,7 +384,8 @@
 	pcm1796_init(chip);
 
 	oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL,
-			  GPIO_INPUT_ROUTE | GPIO_ST_HP_REAR | GPIO_ST_HP);
+			  GPIO_INPUT_ROUTE | GPIO_ST_HP_REAR |
+			  GPIO_ST_MAGIC | GPIO_ST_HP);
 	oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA,
 			    GPIO_INPUT_ROUTE | GPIO_ST_HP_REAR | GPIO_ST_HP);