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- /*
- * 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 */
-