/*
 * [origin: Linux kernel include/asm-arm/arch-at91/gpio.h]
 *
 *  Copyright (C) 2005 HP Labs
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 */

#ifndef __ASM_ARCH_AT91_GPIO_H
#define __ASM_ARCH_AT91_GPIO_H

#include <asm/io.h>
#include <asm-generic/errno.h>
#include <mach/at91_pio.h>
#include <mach/hardware.h>

#define PIN_BASE		32

/* these pin numbers double as IRQ numbers, like AT91xxx_ID_* values */

#define	AT91_PIN_PA0	(PIN_BASE + 0x00 + 0)
#define	AT91_PIN_PA1	(PIN_BASE + 0x00 + 1)
#define	AT91_PIN_PA2	(PIN_BASE + 0x00 + 2)
#define	AT91_PIN_PA3	(PIN_BASE + 0x00 + 3)
#define	AT91_PIN_PA4	(PIN_BASE + 0x00 + 4)
#define	AT91_PIN_PA5	(PIN_BASE + 0x00 + 5)
#define	AT91_PIN_PA6	(PIN_BASE + 0x00 + 6)
#define	AT91_PIN_PA7	(PIN_BASE + 0x00 + 7)
#define	AT91_PIN_PA8	(PIN_BASE + 0x00 + 8)
#define	AT91_PIN_PA9	(PIN_BASE + 0x00 + 9)
#define	AT91_PIN_PA10	(PIN_BASE + 0x00 + 10)
#define	AT91_PIN_PA11	(PIN_BASE + 0x00 + 11)
#define	AT91_PIN_PA12	(PIN_BASE + 0x00 + 12)
#define	AT91_PIN_PA13	(PIN_BASE + 0x00 + 13)
#define	AT91_PIN_PA14	(PIN_BASE + 0x00 + 14)
#define	AT91_PIN_PA15	(PIN_BASE + 0x00 + 15)
#define	AT91_PIN_PA16	(PIN_BASE + 0x00 + 16)
#define	AT91_PIN_PA17	(PIN_BASE + 0x00 + 17)
#define	AT91_PIN_PA18	(PIN_BASE + 0x00 + 18)
#define	AT91_PIN_PA19	(PIN_BASE + 0x00 + 19)
#define	AT91_PIN_PA20	(PIN_BASE + 0x00 + 20)
#define	AT91_PIN_PA21	(PIN_BASE + 0x00 + 21)
#define	AT91_PIN_PA22	(PIN_BASE + 0x00 + 22)
#define	AT91_PIN_PA23	(PIN_BASE + 0x00 + 23)
#define	AT91_PIN_PA24	(PIN_BASE + 0x00 + 24)
#define	AT91_PIN_PA25	(PIN_BASE + 0x00 + 25)
#define	AT91_PIN_PA26	(PIN_BASE + 0x00 + 26)
#define	AT91_PIN_PA27	(PIN_BASE + 0x00 + 27)
#define	AT91_PIN_PA28	(PIN_BASE + 0x00 + 28)
#define	AT91_PIN_PA29	(PIN_BASE + 0x00 + 29)
#define	AT91_PIN_PA30	(PIN_BASE + 0x00 + 30)
#define	AT91_PIN_PA31	(PIN_BASE + 0x00 + 31)

#define	AT91_PIN_PB0	(PIN_BASE + 0x20 + 0)
#define	AT91_PIN_PB1	(PIN_BASE + 0x20 + 1)
#define	AT91_PIN_PB2	(PIN_BASE + 0x20 + 2)
#define	AT91_PIN_PB3	(PIN_BASE + 0x20 + 3)
#define	AT91_PIN_PB4	(PIN_BASE + 0x20 + 4)
#define	AT91_PIN_PB5	(PIN_BASE + 0x20 + 5)
#define	AT91_PIN_PB6	(PIN_BASE + 0x20 + 6)
#define	AT91_PIN_PB7	(PIN_BASE + 0x20 + 7)
#define	AT91_PIN_PB8	(PIN_BASE + 0x20 + 8)
#define	AT91_PIN_PB9	(PIN_BASE + 0x20 + 9)
#define	AT91_PIN_PB10	(PIN_BASE + 0x20 + 10)
#define	AT91_PIN_PB11	(PIN_BASE + 0x20 + 11)
#define	AT91_PIN_PB12	(PIN_BASE + 0x20 + 12)
#define	AT91_PIN_PB13	(PIN_BASE + 0x20 + 13)
#define	AT91_PIN_PB14	(PIN_BASE + 0x20 + 14)
#define	AT91_PIN_PB15	(PIN_BASE + 0x20 + 15)
#define	AT91_PIN_PB16	(PIN_BASE + 0x20 + 16)
#define	AT91_PIN_PB17	(PIN_BASE + 0x20 + 17)
#define	AT91_PIN_PB18	(PIN_BASE + 0x20 + 18)
#define	AT91_PIN_PB19	(PIN_BASE + 0x20 + 19)
#define	AT91_PIN_PB20	(PIN_BASE + 0x20 + 20)
#define	AT91_PIN_PB21	(PIN_BASE + 0x20 + 21)
#define	AT91_PIN_PB22	(PIN_BASE + 0x20 + 22)
#define	AT91_PIN_PB23	(PIN_BASE + 0x20 + 23)
#define	AT91_PIN_PB24	(PIN_BASE + 0x20 + 24)
#define	AT91_PIN_PB25	(PIN_BASE + 0x20 + 25)
#define	AT91_PIN_PB26	(PIN_BASE + 0x20 + 26)
#define	AT91_PIN_PB27	(PIN_BASE + 0x20 + 27)
#define	AT91_PIN_PB28	(PIN_BASE + 0x20 + 28)
#define	AT91_PIN_PB29	(PIN_BASE + 0x20 + 29)
#define	AT91_PIN_PB30	(PIN_BASE + 0x20 + 30)
#define	AT91_PIN_PB31	(PIN_BASE + 0x20 + 31)

#define	AT91_PIN_PC0	(PIN_BASE + 0x40 + 0)
#define	AT91_PIN_PC1	(PIN_BASE + 0x40 + 1)
#define	AT91_PIN_PC2	(PIN_BASE + 0x40 + 2)
#define	AT91_PIN_PC3	(PIN_BASE + 0x40 + 3)
#define	AT91_PIN_PC4	(PIN_BASE + 0x40 + 4)
#define	AT91_PIN_PC5	(PIN_BASE + 0x40 + 5)
#define	AT91_PIN_PC6	(PIN_BASE + 0x40 + 6)
#define	AT91_PIN_PC7	(PIN_BASE + 0x40 + 7)
#define	AT91_PIN_PC8	(PIN_BASE + 0x40 + 8)
#define	AT91_PIN_PC9	(PIN_BASE + 0x40 + 9)
#define	AT91_PIN_PC10	(PIN_BASE + 0x40 + 10)
#define	AT91_PIN_PC11	(PIN_BASE + 0x40 + 11)
#define	AT91_PIN_PC12	(PIN_BASE + 0x40 + 12)
#define	AT91_PIN_PC13	(PIN_BASE + 0x40 + 13)
#define	AT91_PIN_PC14	(PIN_BASE + 0x40 + 14)
#define	AT91_PIN_PC15	(PIN_BASE + 0x40 + 15)
#define	AT91_PIN_PC16	(PIN_BASE + 0x40 + 16)
#define	AT91_PIN_PC17	(PIN_BASE + 0x40 + 17)
#define	AT91_PIN_PC18	(PIN_BASE + 0x40 + 18)
#define	AT91_PIN_PC19	(PIN_BASE + 0x40 + 19)
#define	AT91_PIN_PC20	(PIN_BASE + 0x40 + 20)
#define	AT91_PIN_PC21	(PIN_BASE + 0x40 + 21)
#define	AT91_PIN_PC22	(PIN_BASE + 0x40 + 22)
#define	AT91_PIN_PC23	(PIN_BASE + 0x40 + 23)
#define	AT91_PIN_PC24	(PIN_BASE + 0x40 + 24)
#define	AT91_PIN_PC25	(PIN_BASE + 0x40 + 25)
#define	AT91_PIN_PC26	(PIN_BASE + 0x40 + 26)
#define	AT91_PIN_PC27	(PIN_BASE + 0x40 + 27)
#define	AT91_PIN_PC28	(PIN_BASE + 0x40 + 28)
#define	AT91_PIN_PC29	(PIN_BASE + 0x40 + 29)
#define	AT91_PIN_PC30	(PIN_BASE + 0x40 + 30)
#define	AT91_PIN_PC31	(PIN_BASE + 0x40 + 31)

#define	AT91_PIN_PD0	(PIN_BASE + 0x60 + 0)
#define	AT91_PIN_PD1	(PIN_BASE + 0x60 + 1)
#define	AT91_PIN_PD2	(PIN_BASE + 0x60 + 2)
#define	AT91_PIN_PD3	(PIN_BASE + 0x60 + 3)
#define	AT91_PIN_PD4	(PIN_BASE + 0x60 + 4)
#define	AT91_PIN_PD5	(PIN_BASE + 0x60 + 5)
#define	AT91_PIN_PD6	(PIN_BASE + 0x60 + 6)
#define	AT91_PIN_PD7	(PIN_BASE + 0x60 + 7)
#define	AT91_PIN_PD8	(PIN_BASE + 0x60 + 8)
#define	AT91_PIN_PD9	(PIN_BASE + 0x60 + 9)
#define	AT91_PIN_PD10	(PIN_BASE + 0x60 + 10)
#define	AT91_PIN_PD11	(PIN_BASE + 0x60 + 11)
#define	AT91_PIN_PD12	(PIN_BASE + 0x60 + 12)
#define	AT91_PIN_PD13	(PIN_BASE + 0x60 + 13)
#define	AT91_PIN_PD14	(PIN_BASE + 0x60 + 14)
#define	AT91_PIN_PD15	(PIN_BASE + 0x60 + 15)
#define	AT91_PIN_PD16	(PIN_BASE + 0x60 + 16)
#define	AT91_PIN_PD17	(PIN_BASE + 0x60 + 17)
#define	AT91_PIN_PD18	(PIN_BASE + 0x60 + 18)
#define	AT91_PIN_PD19	(PIN_BASE + 0x60 + 19)
#define	AT91_PIN_PD20	(PIN_BASE + 0x60 + 20)
#define	AT91_PIN_PD21	(PIN_BASE + 0x60 + 21)
#define	AT91_PIN_PD22	(PIN_BASE + 0x60 + 22)
#define	AT91_PIN_PD23	(PIN_BASE + 0x60 + 23)
#define	AT91_PIN_PD24	(PIN_BASE + 0x60 + 24)
#define	AT91_PIN_PD25	(PIN_BASE + 0x60 + 25)
#define	AT91_PIN_PD26	(PIN_BASE + 0x60 + 26)
#define	AT91_PIN_PD27	(PIN_BASE + 0x60 + 27)
#define	AT91_PIN_PD28	(PIN_BASE + 0x60 + 28)
#define	AT91_PIN_PD29	(PIN_BASE + 0x60 + 29)
#define	AT91_PIN_PD30	(PIN_BASE + 0x60 + 30)
#define	AT91_PIN_PD31	(PIN_BASE + 0x60 + 31)

#define	AT91_PIN_PE0	(PIN_BASE + 0x80 + 0)
#define	AT91_PIN_PE1	(PIN_BASE + 0x80 + 1)
#define	AT91_PIN_PE2	(PIN_BASE + 0x80 + 2)
#define	AT91_PIN_PE3	(PIN_BASE + 0x80 + 3)
#define	AT91_PIN_PE4	(PIN_BASE + 0x80 + 4)
#define	AT91_PIN_PE5	(PIN_BASE + 0x80 + 5)
#define	AT91_PIN_PE6	(PIN_BASE + 0x80 + 6)
#define	AT91_PIN_PE7	(PIN_BASE + 0x80 + 7)
#define	AT91_PIN_PE8	(PIN_BASE + 0x80 + 8)
#define	AT91_PIN_PE9	(PIN_BASE + 0x80 + 9)
#define	AT91_PIN_PE10	(PIN_BASE + 0x80 + 10)
#define	AT91_PIN_PE11	(PIN_BASE + 0x80 + 11)
#define	AT91_PIN_PE12	(PIN_BASE + 0x80 + 12)
#define	AT91_PIN_PE13	(PIN_BASE + 0x80 + 13)
#define	AT91_PIN_PE14	(PIN_BASE + 0x80 + 14)
#define	AT91_PIN_PE15	(PIN_BASE + 0x80 + 15)
#define	AT91_PIN_PE16	(PIN_BASE + 0x80 + 16)
#define	AT91_PIN_PE17	(PIN_BASE + 0x80 + 17)
#define	AT91_PIN_PE18	(PIN_BASE + 0x80 + 18)
#define	AT91_PIN_PE19	(PIN_BASE + 0x80 + 19)
#define	AT91_PIN_PE20	(PIN_BASE + 0x80 + 20)
#define	AT91_PIN_PE21	(PIN_BASE + 0x80 + 21)
#define	AT91_PIN_PE22	(PIN_BASE + 0x80 + 22)
#define	AT91_PIN_PE23	(PIN_BASE + 0x80 + 23)
#define	AT91_PIN_PE24	(PIN_BASE + 0x80 + 24)
#define	AT91_PIN_PE25	(PIN_BASE + 0x80 + 25)
#define	AT91_PIN_PE26	(PIN_BASE + 0x80 + 26)
#define	AT91_PIN_PE27	(PIN_BASE + 0x80 + 27)
#define	AT91_PIN_PE28	(PIN_BASE + 0x80 + 28)
#define	AT91_PIN_PE29	(PIN_BASE + 0x80 + 29)
#define	AT91_PIN_PE30	(PIN_BASE + 0x80 + 30)
#define	AT91_PIN_PE31	(PIN_BASE + 0x80 + 31)

/*
 * mux the pin to the "GPIO" peripheral role.
 */
int at91_set_GPIO_periph(unsigned pin, int use_pullup);


/*
 * mux the pin to the "A" internal peripheral role.
 */
int at91_set_A_periph(unsigned pin, int use_pullup);

/*
 * mux the pin to the "B" internal peripheral role.
 */
int at91_set_B_periph(unsigned pin, int use_pullup);
/*
 * mux the pin to the gpio controller (instead of "A" or "B" peripheral), and
 * configure it for an input.
 */
int at91_set_gpio_input(unsigned pin, int use_pullup);

/*
 * mux the pin to the gpio controller (instead of "A" or "B" peripheral),
 * and configure it for an output.
 */
int at91_set_gpio_output(unsigned pin, int value);

/*
 * enable/disable the glitch filter; mostly used with IRQ handling.
 */
int at91_set_deglitch(unsigned pin, int is_on);

/*
 * enable/disable the multi-driver; This is only valid for output and
 * allows the output pin to run as an open collector output.
 */
int at91_set_multi_drive(unsigned pin, int is_on);

/*
 * assuming the pin is muxed as a gpio output, set its value.
 */
int at91_set_gpio_value(unsigned pin, int value);

/*
 * read the pin's value (works even if it's not muxed as a gpio).
 */
int at91_get_gpio_value(unsigned pin);

struct at91_gpio_bank {
	unsigned chipbase;		/* bank's first GPIO number */
	void __iomem *regbase;		/* base of register bank */
	struct at91_gpio_bank *next;	/* bank sharing same IRQ/clock/... */
	unsigned short id;		/* peripheral ID */
	unsigned long offset;		/* offset from system peripheral base */
	struct clk *clock;
};

extern int at91_gpio_init(struct at91_gpio_bank *data, int nr_banks);

static inline int gpio_request(unsigned gpio, const char *label)
{
	return 0;
}

static inline void gpio_free(unsigned gpio)
{
}

extern int gpio_direction_input(unsigned gpio);
extern int gpio_direction_output(unsigned gpio, int value);
#define gpio_get_value at91_get_gpio_value
#define gpio_set_value at91_set_gpio_value

#endif /* __ASM_ARCH_AT91SAM9_GPIO_H */