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/kernel.h>
16 #include <linux/errno.h>
18 #if defined(CONFIG_CPU_SH3)
22 typedef unsigned short pinmux_enum_t;
23 typedef unsigned short pinmux_flag_t;
25 #define PINMUX_TYPE_NONE 0
26 #define PINMUX_TYPE_FUNCTION 1
27 #define PINMUX_TYPE_GPIO 2
28 #define PINMUX_TYPE_OUTPUT 3
29 #define PINMUX_TYPE_INPUT 4
30 #define PINMUX_TYPE_INPUT_PULLUP 5
31 #define PINMUX_TYPE_INPUT_PULLDOWN 6
33 #define PINMUX_FLAG_TYPE (0x7)
34 #define PINMUX_FLAG_WANT_PULLUP (1 << 3)
35 #define PINMUX_FLAG_WANT_PULLDOWN (1 << 4)
37 #define PINMUX_FLAG_DBIT_SHIFT 5
38 #define PINMUX_FLAG_DBIT (0x1f << PINMUX_FLAG_DBIT_SHIFT)
39 #define PINMUX_FLAG_DREG_SHIFT 10
40 #define PINMUX_FLAG_DREG (0x3f << PINMUX_FLAG_DREG_SHIFT)
43 pinmux_enum_t enum_id;
47 #define PINMUX_GPIO(gpio, data_or_mark) [gpio] = { data_or_mark }
48 #define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
50 struct pinmux_cfg_reg {
51 unsigned long reg, reg_width, field_width;
53 pinmux_enum_t *enum_ids;
56 #define PINMUX_CFG_REG(name, r, r_width, f_width) \
57 .reg = r, .reg_width = r_width, .field_width = f_width, \
58 .cnt = (unsigned long [r_width / f_width]) {}, \
59 .enum_ids = (pinmux_enum_t [(r_width / f_width) * (1 << f_width)]) \
61 struct pinmux_data_reg {
62 unsigned long reg, reg_width;
63 pinmux_enum_t *enum_ids;
66 #define PINMUX_DATA_REG(name, r, r_width) \
67 .reg = r, .reg_width = r_width, \
68 .enum_ids = (pinmux_enum_t [r_width]) \
78 pinmux_enum_t reserved_id;
79 struct pinmux_range data;
80 struct pinmux_range input;
81 struct pinmux_range input_pd;
82 struct pinmux_range input_pu;
83 struct pinmux_range output;
84 struct pinmux_range mark;
85 struct pinmux_range function;
87 unsigned first_gpio, last_gpio;
89 struct pinmux_gpio *gpios;
90 struct pinmux_cfg_reg *cfg_regs;
91 struct pinmux_data_reg *data_regs;
93 pinmux_enum_t *gpio_data;
94 unsigned int gpio_data_size;
96 unsigned long *gpio_in_use;
99 int register_pinmux(struct pinmux_info *pip);
101 int __gpio_request(unsigned gpio);
102 static inline int gpio_request(unsigned gpio, const char *label)
104 return __gpio_request(gpio);
106 void gpio_free(unsigned gpio);
107 int gpio_direction_input(unsigned gpio);
108 int gpio_direction_output(unsigned gpio, int value);
109 int gpio_get_value(unsigned gpio);
110 void gpio_set_value(unsigned gpio, int value);
112 /* IRQ modes are unspported */
113 static inline int gpio_to_irq(unsigned gpio)
119 static inline int irq_to_gpio(unsigned irq)
125 #include <asm-generic/gpio.h>
127 #endif /* __ASM_SH_GPIO_H */