[AVR32] fix serial port setup on ATSTK1000

Fixes to USART setup on the stk-1000 ... don't configure USART 2, since
its TXD/RXD are used for INT-A and INT-B buttons; and configure USART 0
(for IRDA, and with corrected IRQ) iff SW2 has a non-default setting.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 13 insertions, 3 deletions

diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c
index 32b361f31c2c..3787d6bfe0d7 100644
--- a/arch/avr32/boards/atstk1000/atstk1002.c
+++ b/arch/avr32/boards/atstk1000/atstk1002.c
@@ -20,6 +20,9 @@
 #include <asm/arch/board.h>
 #include <asm/arch/init.h>
 
+
+#define SW2_DEFAULT             /* MMCI and UART_A available */
+
 struct eth_addr {
         u8 addr[6];
 };
@@ -86,9 +89,13 @@ static void __init set_hw_addr(struct platform_device *pdev)
 
 void __init setup_board(void)
 {
-        at32_map_usart(1, 0);   /* /dev/ttyS0 */
-        at32_map_usart(2, 1);   /* /dev/ttyS1 */
-        at32_map_usart(3, 2);   /* /dev/ttyS2 */
+#ifdef  SW2_DEFAULT
+        at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
+#else
+        at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
+#endif
+        /* USART 2/unused: expansion connector */
+        at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
 
         at32_setup_serial_console(0);
 }
@@ -97,8 +104,11 @@ static int __init atstk1002_init(void)
 {
         at32_add_system_devices();
 
+#ifdef  SW2_DEFAULT
         at32_add_device_usart(0);
+#else
         at32_add_device_usart(1);
+#endif
         at32_add_device_usart(2);
 
         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));