gpio.h

Linux Kernel 2.6.9 for OMAP1710

/* 
 * linux/include/asm-arm/arch-omap2/gpio.h
 * 
 * OMAP2 GPIO handling defines and functions
 *
 * Copyright (C) 2003 Nokia Corporation
 * Written by Juha Yrjölä <[e-mail]>m>
 * 
 * Copyright (C) 2004 Texas Instruments, Inc. 
 * 
 * This package is free software; you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation. 
 * 
 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 
 */

#ifndef __ASM_ARM_ARCH_OMAP2_GPIO_H
#define __ASM_ARM_ARCH_OMAP2_GPIO_H

#include <asm/arch/irqs.h>

/*
 * OMAP-2420 specific GPIO registers
 */
#define OMAP2420_GPIO1_BASE             IO_ADDRESS(0x48018000)
#define OMAP2420_GPIO2_BASE             IO_ADDRESS(0x4801a000)
#define OMAP2420_GPIO3_BASE             IO_ADDRESS(0x4801c000)
#define OMAP2420_GPIO4_BASE             IO_ADDRESS(0x4801e000)

#define OMAP2420_GPIO_REVISION          0x0000
#define OMAP2420_GPIO_SYSCONFIG         0x0010
#define OMAP2420_GPIO_SYSSTATUS         0x0014
#define OMAP2420_GPIO_IRQSTATUS1        0x0018
#define OMAP2420_GPIO_IRQENABLE1        0x001c
#define OMAP2420_GPIO_WAKE_EN           0x0020
#define OMAP2420_GPIO_DIRECTION         0x0034	/* Output Enable */
#define OMAP2420_GPIO_DATAIN            0x0038
#define OMAP2420_GPIO_DATAOUT           0x003c
#define OMAP2420_GPIO_LOW_LEVEL         0x0040
#define OMAP2420_GPIO_HIGH_LEVEL        0x0044
#define OMAP2420_GPIO_RISING_EDGE       0x0048
#define OMAP2420_GPIO_FALLING_EDGE      0x004c
#define OMAP2420_GPIO_DEBOUNCE_EN       0x0050
#define OMAP2420_GPIO_DEBOUNCE_VAL      0x0054
#define OMAP2420_GPIO_CLEAR_IRQENABLE1  0x0060
#define OMAP2420_GPIO_SET_IRQENABLE1    0x0064
#define OMAP2420_GPIO_CLEAR_DATAOUT     0x0090
#define OMAP2420_GPIO_SET_DATAOUT       0x0094

#define OMAP2420_DIR_INPUT              1
#define OMAP2420_DIR_OUTPUT             0

#define OMAP_GPIO_BASE_REG(nr)          ((nr) >= 96 ? OMAP2420_GPIO4_BASE : \
                 (nr) >= 64 ? OMAP2420_GPIO3_BASE : \
                 (nr) >= 32 ? OMAP2420_GPIO2_BASE : \
                 OMAP2420_GPIO1_BASE)
#define OMAP_GPIO_INDEX(nr)             ((nr) & 0x1f)
#define OMAP_GPIO_BIT(nr)               (1 << OMAP_GPIO_INDEX(nr))

#define OMAP_GPIO_IRQ_NO(n)             (IH_GPIO_BASE+n)

/* ISR Polarity defines */
#define OMAP_GPIO_NO_EDGE               0x00
#define OMAP_GPIO_FALLING_EDGE          0x01
#define OMAP_GPIO_RISING_EDGE           0x02
#define OMAP_GPIO_BOTH_EDGES            0x03
#define OMAP_GPIO_LEVEL_HIGH            0x04
#define OMAP_GPIO_LEVEL_LOW             0x08
#define OMAP_GPIO_HIGH_LOW              0x0c

extern int omap_request_gpio(int gpio);
extern void omap_free_gpio(int gpio);
extern void omap_set_gpio_direction(int gpio, int is_input);
extern void omap_set_gpio_dataout(int gpio, int enable);
extern int omap_get_gpio_datain(int gpio);
extern void omap_set_gpio_edge_ctrl(int gpio, int edge);
extern void omap_set_gpio_debounce_time(int gpio, int enc_time);
extern void omap_set_gpio_debounce(int gpio, int enable);
extern void gpio_unmask_irq(unsigned int irq);

#endif				/* __ASM_ARM_ARCH_OMAP2_GPIO_H */