ALSA: ctxfi - Native timer support for emu20k2

Added the native timer support for emu20k2, which gives much more
accurate update timing than the system timer.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ctxfi/ct20k2reg.h b/sound/pci/ctxfi/ct20k2reg.h
index 2d07986..e0394e3 100644
--- a/sound/pci/ctxfi/ct20k2reg.h
+++ b/sound/pci/ctxfi/ct20k2reg.h
@@ -11,9 +11,12 @@
 
 
 /* Timer Registers */
-#define TIMER_TIMR          0x1B7004
-#define INTERRUPT_GIP       0x1B7010
-#define INTERRUPT_GIE       0x1B7014
+#define WC		0x1b7000
+#define TIMR		0x1b7004
+# define	TIMR_IE		(1<<15)
+# define	TIMR_IP		(1<<14)
+#define GIP		0x1b7010
+#define GIE		0x1b7014
 
 /* I2C Registers */
 #define I2C_IF_ADDRESS   0x1B9000