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