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_cs43xx.c b/sound/pci/oxygen/xonar_cs43xx.c
index aa27c310..ae4e5b5 100644
--- a/sound/pci/oxygen/xonar_cs43xx.c
+++ b/sound/pci/oxygen/xonar_cs43xx.c
@@ -63,6 +63,7 @@
 #define GPI_EXT_POWER		0x01
 #define GPIO_D1_OUTPUT_ENABLE	0x0001
 #define GPIO_D1_FRONT_PANEL	0x0002
+#define GPIO_D1_MAGIC		0x00c0
 #define GPIO_D1_INPUT_ROUTE	0x0100
 
 #define I2C_DEVICE_CS4398	0x9e	/* 10011, AD1=1, AD0=1, /W=0 */
@@ -169,7 +170,9 @@
 	cs43xx_registers_init(chip);
 
 	oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL,
-			  GPIO_D1_FRONT_PANEL | GPIO_D1_INPUT_ROUTE);
+			  GPIO_D1_FRONT_PANEL |
+			  GPIO_D1_MAGIC |
+			  GPIO_D1_INPUT_ROUTE);
 	oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA,
 			    GPIO_D1_FRONT_PANEL | GPIO_D1_INPUT_ROUTE);