[ARM] Orion: share GPIO handling code

Split off Orion GPIO handling code into plat-orion/, and add
support for multiple sets of (32) GPIO pins.

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

arch/arm/mach-orion5x/Makefile

@@ -1,4 +1,4 @@
-obj-y				+= common.o addr-map.o pci.o gpio.o irq.o mpp.o
+obj-y				+= common.o addr-map.o pci.o irq.o mpp.o
 obj-$(CONFIG_MACH_DB88F5281)	+= db88f5281-setup.o
 obj-$(CONFIG_MACH_RD88F5182)	+= rd88f5182-setup.o
 obj-$(CONFIG_MACH_KUROBOX_PRO)	+= kurobox_pro-setup.o

arch/arm/mach-orion5x/common.h

@@ -51,13 +51,6 @@ int orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys);
 struct pci_bus *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys);
 int orion5x_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin);
 
-/*
- * Valid GPIO pins according to MPP setup, used by machine-setup.
- * (/mach-orion/gpio.c).
- */
-void orion5x_gpio_set_valid(unsigned pin, int valid);
-void gpio_display(void);	/* debug */
-
 struct machine_desc;
 struct meminfo;
 struct tag;

arch/arm/mach-orion5x/include/mach/gpio.h

@@ -2,18 +2,23 @@
  * arch/arm/mach-orion5x/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
+ * License version 2.  This program is licensed "as is" without any
  * warranty of any kind, whether express or implied.
  */
 
-extern int gpio_request(unsigned pin, const char *label);
-extern void gpio_free(unsigned pin);
-extern int gpio_direction_input(unsigned pin);
-extern int gpio_direction_output(unsigned pin, int value);
-extern int gpio_get_value(unsigned pin);
-extern void gpio_set_value(unsigned pin, int value);
-extern void orion5x_gpio_set_blink(unsigned pin, int blink);
-extern void gpio_display(void);		/* debug */
+#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 */
+
+#define GPIO_MAX		32
+#define GPIO_OUT(pin)		ORION5X_DEV_BUS_REG(0x100)
+#define GPIO_IO_CONF(pin)	ORION5X_DEV_BUS_REG(0x104)
+#define GPIO_BLINK_EN(pin)	ORION5X_DEV_BUS_REG(0x108)
+#define GPIO_IN_POL(pin)	ORION5X_DEV_BUS_REG(0x10c)
+#define GPIO_DATA_IN(pin)	ORION5X_DEV_BUS_REG(0x110)
 
 static inline int gpio_to_irq(int pin)
 {
@@ -25,4 +30,5 @@ static inline int irq_to_gpio(int irq)
 	return irq - IRQ_ORION5X_GPIO_START;
 }
 
-#include <asm-generic/gpio.h>		/* cansleep wrappers */
+
+#endif

arch/arm/mach-orion5x/include/mach/irqs.h

@@ -13,8 +13,6 @@
 #ifndef __ASM_ARCH_IRQS_H
 #define __ASM_ARCH_IRQS_H
 
-#include "orion5x.h"	/* need GPIO_MAX */
-
 /*
  * Orion Main Interrupt Controller
  */
@@ -54,7 +52,7 @@
  * Orion General Purpose Pins
  */
 #define IRQ_ORION5X_GPIO_START	32
-#define NR_GPIO_IRQS		GPIO_MAX
+#define NR_GPIO_IRQS		32
 
 #define NR_IRQS			(IRQ_ORION5X_GPIO_START + NR_GPIO_IRQS)
 

arch/arm/mach-orion5x/include/mach/orion5x.h

@@ -134,11 +134,6 @@
 #define MPP_16_19_CTRL		ORION5X_DEV_BUS_REG(0x050)
 #define MPP_DEV_CTRL		ORION5X_DEV_BUS_REG(0x008)
 #define MPP_RESET_SAMPLE	ORION5X_DEV_BUS_REG(0x010)
-#define GPIO_OUT		ORION5X_DEV_BUS_REG(0x100)
-#define GPIO_IO_CONF		ORION5X_DEV_BUS_REG(0x104)
-#define GPIO_BLINK_EN		ORION5X_DEV_BUS_REG(0x108)
-#define GPIO_IN_POL		ORION5X_DEV_BUS_REG(0x10c)
-#define GPIO_DATA_IN		ORION5X_DEV_BUS_REG(0x110)
 #define GPIO_EDGE_CAUSE		ORION5X_DEV_BUS_REG(0x114)
 #define GPIO_EDGE_MASK		ORION5X_DEV_BUS_REG(0x118)
 #define GPIO_LEVEL_MASK		ORION5X_DEV_BUS_REG(0x11c)
@@ -149,7 +144,6 @@
 #define DEV_BUS_CTRL		ORION5X_DEV_BUS_REG(0x4c0)
 #define DEV_BUS_INT_CAUSE	ORION5X_DEV_BUS_REG(0x4d0)
 #define DEV_BUS_INT_MASK	ORION5X_DEV_BUS_REG(0x4d4)
-#define GPIO_MAX		32
 
 /***************************************************************************
  * Orion CPU Bridge Registers