MIPS: RBTX4927: More explicit initialization

* Make sure all interrupts cleared on startup
* Initialize some GPIOs

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 14 insertions, 0 deletions

diff --git a/arch/mips/txx9/rbtx4927/irq.c b/arch/mips/txx9/rbtx4927/irq.c
index 00cd5231da30..22076e3f03a8 100644
--- a/arch/mips/txx9/rbtx4927/irq.c
+++ b/arch/mips/txx9/rbtx4927/irq.c
@@ -142,6 +142,11 @@ static void __init toshiba_rbtx4927_irq_ioc_init(void)
 {
         int i;
 
+        /* mask all IOC interrupts */
+        writeb(0, rbtx4927_imask_addr);
+        /* clear SoftInt interrupts */
+        writeb(0, rbtx4927_softint_addr);
+
         for (i = RBTX4927_IRQ_IOC;
              i < RBTX4927_IRQ_IOC + RBTX4927_NR_IRQ_IOC; i++)
                 set_irq_chip_and_handler(i, &toshiba_rbtx4927_irq_ioc_type,
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index 0d39bafea794..5985f330838a 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -48,6 +48,7 @@
 #include <linux/ioport.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
+#include <linux/gpio.h>
 #include <asm/io.h>
 #include <asm/reboot.h>
 #include <asm/txx9/generic.h>
@@ -212,6 +213,14 @@ static void __init rbtx4927_mem_setup(void)
         set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET);
 #endif
 
+        /* TX4927-SIO DTR on (PIO[15]) */
+        gpio_request(15, "sio-dtr");
+        gpio_direction_output(15, 1);
+        gpio_request(0, "led");
+        gpio_direction_output(0, 1);
+        gpio_request(1, "led");
+        gpio_direction_output(1, 1);
+
         tx4927_sio_init(0, 0);
 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
         argptr = prom_getcmdline();