[ARM] mmp2: add gpio initialization

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/arch/arm/mach-mmp/mmp2.c b/arch/arm/mach-mmp/mmp2.c
index 561194d3bb43..0f1c441cc898 100644
--- a/arch/arm/mach-mmp/mmp2.c
+++ b/arch/arm/mach-mmp/mmp2.c
@@ -21,6 +21,7 @@
 #include <mach/cputype.h>
 #include <mach/irqs.h>
 #include <mach/mfp.h>
+#include <mach/gpio.h>
 #include <mach/devices.h>
 
 #include "common.h"
@@ -28,12 +29,34 @@
 
 #define MFPR_VIRT_BASE  (APB_VIRT_BASE + 0x1e000)
 
+#define APMASK(i)       (GPIO_REGS_VIRT + BANK_OFF(i) + 0x9c)
+
 static struct mfp_addr_map mmp2_addr_map[] __initdata = {
         MFP_ADDR(PMIC_INT, 0x2c4),
 
         MFP_ADDR_END,
 };
 
+static void __init mmp2_init_gpio(void)
+{
+        int i;
+
+        /* enable GPIO clock */
+        __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_MMP2_GPIO);
+
+        /* unmask GPIO edge detection for all 6 banks -- APMASKx */
+        for (i = 0; i < 6; i++)
+                __raw_writel(0xffffffff, APMASK(i));
+
+        pxa_init_gpio(IRQ_MMP2_GPIO, 0, 167, NULL);
+}
+
+void __init mmp2_init_irq(void)
+{
+        mmp2_init_icu();
+        mmp2_init_gpio();
+}
+
 /* APB peripheral clocks */
 static APBC_CLK(uart1, MMP2_UART1, 1, 26000000);
 static APBC_CLK(uart2, MMP2_UART2, 1, 26000000);