[ARM] mv78xx0: implement GPIO and GPIO interrupt support

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/arch/arm/mach-mv78xx0/include/mach/gpio.h b/arch/arm/mach-mv78xx0/include/mach/gpio.h
new file mode 100644
index 00000000000..d9d1535ea10
--- /dev/null
+++ b/arch/arm/mach-mv78xx0/include/mach/gpio.h
@@ -0,0 +1,40 @@
+/*
+ * arch/asm-arm/mach-mv78xx0/include/mach/gpio.h
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#include <mach/irqs.h>
+#include <plat/gpio.h>
+#include <asm-generic/gpio.h>           /* cansleep wrappers */
+
+extern int mv78xx0_core_index(void);
+
+#define GPIO_MAX                32
+#define GPIO_OUT(pin)           (DEV_BUS_VIRT_BASE + 0x0100)
+#define GPIO_IO_CONF(pin)       (DEV_BUS_VIRT_BASE + 0x0104)
+#define GPIO_BLINK_EN(pin)      (DEV_BUS_VIRT_BASE + 0x0108)
+#define GPIO_IN_POL(pin)        (DEV_BUS_VIRT_BASE + 0x010c)
+#define GPIO_DATA_IN(pin)       (DEV_BUS_VIRT_BASE + 0x0110)
+#define GPIO_EDGE_CAUSE(pin)    (DEV_BUS_VIRT_BASE + 0x0114)
+#define GPIO_MASK_OFF           (mv78xx0_core_index() ? 0x18 : 0)
+#define GPIO_EDGE_MASK(pin)     (DEV_BUS_VIRT_BASE + 0x0118 + GPIO_MASK_OFF)
+#define GPIO_LEVEL_MASK(pin)    (DEV_BUS_VIRT_BASE + 0x011c + GPIO_MASK_OFF)
+
+static inline int gpio_to_irq(int pin)
+{
+        return pin + IRQ_MV78XX0_GPIO_START;
+}
+
+static inline int irq_to_gpio(int irq)
+{
+        return irq - IRQ_MV78XX0_GPIO_START;
+}
+
+
+#endif