[ARM] S3C64XX: Demux UART interrupts

Add demux handling for the UART interrupts
generated by the VIC into their seperate IRQs
that the serial driver can register.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c6400/include/mach/map.h b/arch/arm/mach-s3c6400/include/mach/map.h
index de6cdd518cea..83ed3c158693 100644
--- a/arch/arm/mach-s3c6400/include/mach/map.h
+++ b/arch/arm/mach-s3c6400/include/mach/map.h
@@ -24,6 +24,14 @@
 #define S3C_PA_UART3            (S3C_PA_UART + 0xC00)
 #define S3C_UART_OFFSET         (0x400)
 
+/* See notes on UART VA mapping in debug-macro.S */
+#define S3C_VA_UARTx(x) (S3C_VA_UART + (S3C_PA_UART & 0xfffff) + ((x) * S3C_UART_OFFSET))
+
+#define S3C_VA_UART0            S3C_VA_UARTx(0)
+#define S3C_VA_UART1            S3C_VA_UARTx(1)
+#define S3C_VA_UART2            S3C_VA_UARTx(2)
+#define S3C_VA_UART3            S3C_VA_UARTx(3)
+
 #define S3C64XX_PA_SYSCON       (0x7E00F000)
 #define S3C64XX_PA_TIMER        (0x7F006000)