2 * include/asm-sh/gpio.h
4 * Generic GPIO API and pinmux table support for SuperH.
6 * Copyright (c) 2008 Magnus Damm
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
12 #ifndef __ASM_SH_GPIO_H
13 #define __ASM_SH_GPIO_H
15 #include <linux/errno.h>
17 #if defined(CONFIG_CPU_SH3)
21 typedef unsigned short pinmux_enum_t;
22 typedef unsigned char pinmux_flag_t;
24 #define PINMUX_TYPE_NONE 0
25 #define PINMUX_TYPE_FUNCTION 1
26 #define PINMUX_TYPE_GPIO 2
27 #define PINMUX_TYPE_OUTPUT 3
28 #define PINMUX_TYPE_INPUT 4
29 #define PINMUX_TYPE_INPUT_PULLUP 5
30 #define PINMUX_TYPE_INPUT_PULLDOWN 6
32 #define PINMUX_FLAG_TYPE (0x7)
33 #define PINMUX_FLAG_WANT_PULLUP (1 << 3)
34 #define PINMUX_FLAG_WANT_PULLDOWN (1 << 4)
37 pinmux_enum_t enum_id;
41 #define PINMUX_GPIO(gpio, data_or_mark) [gpio] = { data_or_mark }
42 #define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
44 struct pinmux_cfg_reg {
45 unsigned long reg, reg_width, field_width;
47 pinmux_enum_t *enum_ids;
50 #define PINMUX_CFG_REG(name, r, r_width, f_width) \
51 .reg = r, .reg_width = r_width, .field_width = f_width, \
52 .cnt = (unsigned long [r_width / f_width]) {}, \
53 .enum_ids = (pinmux_enum_t [(r_width / f_width) * (1 << f_width)]) \
55 struct pinmux_data_reg {
56 unsigned long reg, reg_width;
57 pinmux_enum_t *enum_ids;
60 #define PINMUX_DATA_REG(name, r, r_width) \
61 .reg = r, .reg_width = r_width, \
62 .enum_ids = (pinmux_enum_t [r_width]) \
72 pinmux_enum_t reserved_id;
73 struct pinmux_range data;
74 struct pinmux_range input;
75 struct pinmux_range input_pd;
76 struct pinmux_range input_pu;
77 struct pinmux_range output;
78 struct pinmux_range mark;
79 struct pinmux_range function;
81 unsigned first_gpio, last_gpio;
83 struct pinmux_gpio *gpios;
84 struct pinmux_cfg_reg *cfg_regs;
85 struct pinmux_data_reg *data_regs;
87 pinmux_enum_t *gpio_data;
88 unsigned int gpio_data_size;
90 unsigned long *gpio_in_use;
93 int register_pinmux(struct pinmux_info *pip);
95 int __gpio_request(unsigned gpio);
96 static inline int gpio_request(unsigned gpio, const char *label)
98 return __gpio_request(gpio);
100 void gpio_free(unsigned gpio);
101 int gpio_direction_input(unsigned gpio);
102 int gpio_direction_output(unsigned gpio, int value);
103 int gpio_get_value(unsigned gpio);
104 void gpio_set_value(unsigned gpio, int value);
106 /* IRQ modes are unspported */
107 static inline int gpio_to_irq(unsigned gpio)
113 static inline int irq_to_gpio(unsigned irq)
119 #include <asm-generic/gpio.h>
121 #endif /* __ASM_SH_GPIO_H */