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/*
* arch/arm/plat-omap/include/mach/gpio.h
*
* OMAP GPIO handling defines and functions
*
* Copyright (C) 2003-2005 Nokia Corporation
*
* Written by Juha Yrjölä <juha.yrjola@nokia.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __ASM_ARCH_OMAP_GPIO_H
#define __ASM_ARCH_OMAP_GPIO_H
#include <linux/io.h>
#include <linux/platform_device.h>
#include <mach/irqs.h>
#define OMAP1_MPUIO_BASE 0xfffb5000
/*
* These are the omap15xx/16xx offsets. The omap7xx offset are
* OMAP_MPUIO_ / 2 offsets below.
*/
#define OMAP_MPUIO_INPUT_LATCH 0x00
#define OMAP_MPUIO_OUTPUT 0x04
#define OMAP_MPUIO_IO_CNTL 0x08
#define OMAP_MPUIO_KBR_LATCH 0x10
#define OMAP_MPUIO_KBC 0x14
#define OMAP_MPUIO_GPIO_EVENT_MODE 0x18
#define OMAP_MPUIO_GPIO_INT_EDGE 0x1c
#define OMAP_MPUIO_KBD_INT 0x20
#define OMAP_MPUIO_GPIO_INT 0x24
#define OMAP_MPUIO_KBD_MASKIT 0x28
#define OMAP_MPUIO_GPIO_MASKIT 0x2c
#define OMAP_MPUIO_GPIO_DEBOUNCING 0x30
#define OMAP_MPUIO_LATCH 0x34
#define OMAP34XX_NR_GPIOS 6
#define OMAP_MPUIO(nr) (OMAP_MAX_GPIO_LINES + (nr))
#define OMAP_GPIO_IS_MPUIO(nr) ((nr) >= OMAP_MAX_GPIO_LINES)
#define OMAP_GPIO_IRQ(nr) (OMAP_GPIO_IS_MPUIO(nr) ? \
IH_MPUIO_BASE + ((nr) & 0x0f) : \
IH_GPIO_BASE + (nr))
#define METHOD_MPUIO 0
#define METHOD_GPIO_1510 1
#define METHOD_GPIO_1610 2
#define METHOD_GPIO_7XX 3
#define METHOD_GPIO_24XX 5
#define METHOD_GPIO_44XX 6
struct omap_gpio_dev_attr {
int bank_width; /* GPIO bank width */
bool dbck_flag; /* dbck required or not - True for OMAP3&4 */
};
struct omap_gpio_platform_data {
u16 virtual_irq_start;
int bank_type;
int bank_width; /* GPIO bank width */
int bank_stride; /* Only needed for omap1 MPUIO */
bool dbck_flag; /* dbck required or not - True for OMAP3&4 */
};
/* TODO: Analyze removing gpio_bank_count usage from driver code */
extern int gpio_bank_count;
extern void omap2_gpio_prepare_for_idle(int off_mode);
extern void omap2_gpio_resume_after_idle(void);
extern void omap_set_gpio_debounce(int gpio, int enable);
extern void omap_set_gpio_debounce_time(int gpio, int enable);
extern void omap_gpio_save_context(void);
extern void omap_gpio_restore_context(void);
/*-------------------------------------------------------------------------*/
/* Wrappers for "new style" GPIO calls, using the new infrastructure
* which lets us plug in FPGA, I2C, and other implementations.
* *
* The original OMAP-specific calls should eventually be removed.
*/
#include <linux/errno.h>
#include <asm-generic/gpio.h>
static inline int gpio_get_value(unsigned gpio)
{
return __gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned gpio, int value)
{
__gpio_set_value(gpio, value);
}
static inline int gpio_cansleep(unsigned gpio)
{
return __gpio_cansleep(gpio);
}
static inline int gpio_to_irq(unsigned gpio)
{
return __gpio_to_irq(gpio);
}
static inline int irq_to_gpio(unsigned irq)
{
int tmp;
/* omap1 SOC mpuio */
if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16)))
return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES;
/* SOC gpio */
tmp = irq - IH_GPIO_BASE;
if (tmp < OMAP_MAX_GPIO_LINES)
return tmp;
/* we don't supply reverse mappings for non-SOC gpios */
return -EIO;
}
#endif
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