[ARM] pxa: add GPIO support for pxa168
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c
index 1935c75..1774682 100644
--- a/arch/arm/mach-mmp/pxa168.c
+++ b/arch/arm/mach-mmp/pxa168.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/list.h>
+#include <linux/io.h>
#include <linux/clk.h>
#include <asm/mach/time.h>
@@ -19,15 +20,33 @@
#include <mach/cputype.h>
#include <mach/regs-apbc.h>
#include <mach/irqs.h>
+#include <mach/gpio.h>
#include <mach/dma.h>
#include <mach/devices.h>
#include "common.h"
#include "clock.h"
+#define APMASK(i) (GPIO_REGS_VIRT + BANK_OFF(i) + 0x09c)
+
+static void __init pxa168_init_gpio(void)
+{
+ int i;
+
+ /* enable GPIO clock */
+ __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_PXA168_GPIO);
+
+ /* unmask GPIO edge detection for all 4 banks - APMASKx */
+ for (i = 0; i < 4; i++)
+ __raw_writel(0xffffffff, APMASK(i));
+
+ pxa_init_gpio(IRQ_PXA168_GPIOX, 0, 127, NULL);
+}
+
void __init pxa168_init_irq(void)
{
icu_init_irq();
+ pxa168_init_gpio();
}
/* APB peripheral clocks */