/*
* include/asm-sh/gpio.h
*
* Generic GPIO API and pinmux table support for SuperH.
*
* Copyright (c) 2008 Magnus Damm
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef __ASM_SH_GPIO_H
#define __ASM_SH_GPIO_H
#include <linux/kernel.h>
#include <linux/errno.h>
#if defined(CONFIG_CPU_SH3)
#include <cpu/gpio.h>
#endif
typedef unsigned short pinmux_enum_t;
typedef unsigned char pinmux_flag_t;
#define PINMUX_TYPE_NONE 0
#define PINMUX_TYPE_FUNCTION 1
#define PINMUX_TYPE_GPIO 2
#define PINMUX_TYPE_OUTPUT 3
#define PINMUX_TYPE_INPUT 4
#define PINMUX_TYPE_INPUT_PULLUP 5
#define PINMUX_TYPE_INPUT_PULLDOWN 6
#define PINMUX_FLAG_TYPE (0x7)
#define PINMUX_FLAG_WANT_PULLUP (1 << 3)
#define PINMUX_FLAG_WANT_PULLDOWN (1 << 4)
struct pinmux_gpio {
pinmux_enum_t enum_id;
pinmux_flag_t flags;
};
#define PINMUX_GPIO(gpio, data_or_mark) [gpio] = { data_or_mark }
#define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
struct pinmux_cfg_reg {
unsigned long reg, reg_width, field_width;
unsigned long *cnt;
pinmux_enum_t *enum_ids;
};
#define PINMUX_CFG_REG(name, r, r_width, f_width) \
.reg = r, .reg_width = r_width, .field_width = f_width, \
.cnt = (unsigned long [r_width / f_width]) {}, \
.enum_ids = (pinmux_enum_t [(r_width / f_width) * (1 << f_width)]) \
struct pinmux_data_reg {
unsigned long reg, reg_width;
pinmux_enum_t *enum_ids;
};
#define PINMUX_DATA_REG(name, r, r_width) \
.reg = r, .reg_width = r_width, \
.enum_ids = (pinmux_enum_t [r_width]) \
struct pinmux_range {
pinmux_enum_t begin;
pinmux_enum_t end;
pinmux_enum_t force;
};
struct pinmux_info {
char *name;
pinmux_enum_t reserved_id;
struct pinmux_range data;
struct pinmux_range input;
struct pinmux_range input_pd;
struct pinmux_range input_pu;
struct pinmux_range output;
struct pinmux_range mark;
struct pinmux_range function;
unsigned first_gpio, last_gpio;
struct pinmux_gpio *gpios;
struct pinmux_cfg_reg *cfg_regs;
struct pinmux_data_reg *data_regs;
pinmux_enum_t *gpio_data;
unsigned int gpio_data_size;
unsigned long *gpio_in_use;
};
int register_pinmux(struct pinmux_info *pip);
int __gpio_request(unsigned gpio);
static inline int gpio_request(unsigned gpio, const char *label)
{
return __gpio_request(gpio);
}
void gpio_free(unsigned gpio);
int gpio_direction_input(unsigned gpio);
int gpio_direction_output(unsigned gpio, int value);
int gpio_get_value(unsigned gpio);
void gpio_set_value(unsigned gpio, int value);
/* IRQ modes are unspported */
static inline int gpio_to_irq(unsigned gpio)
{
WARN_ON(1);
return -EINVAL;
}
static inline int irq_to_gpio(unsigned irq)
{
WARN_ON(1);
return -EINVAL;
}
#include <asm-generic/gpio.h>
#endif /* __ASM_SH_GPIO_H */
