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Magnus Dammfae43392009-11-27 07:38:01 +00001/*
2 * SuperH Pin Function Controller Support
3 *
4 * Copyright (c) 2008 Magnus Damm
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10
11#ifndef __SH_PFC_H
12#define __SH_PFC_H
13
14#include <asm-generic/gpio.h>
15
16typedef unsigned short pinmux_enum_t;
17typedef unsigned short pinmux_flag_t;
18
19#define PINMUX_TYPE_NONE 0
20#define PINMUX_TYPE_FUNCTION 1
21#define PINMUX_TYPE_GPIO 2
22#define PINMUX_TYPE_OUTPUT 3
23#define PINMUX_TYPE_INPUT 4
24#define PINMUX_TYPE_INPUT_PULLUP 5
25#define PINMUX_TYPE_INPUT_PULLDOWN 6
26
27#define PINMUX_FLAG_TYPE (0x7)
28#define PINMUX_FLAG_WANT_PULLUP (1 << 3)
29#define PINMUX_FLAG_WANT_PULLDOWN (1 << 4)
30
31#define PINMUX_FLAG_DBIT_SHIFT 5
32#define PINMUX_FLAG_DBIT (0x1f << PINMUX_FLAG_DBIT_SHIFT)
33#define PINMUX_FLAG_DREG_SHIFT 10
34#define PINMUX_FLAG_DREG (0x3f << PINMUX_FLAG_DREG_SHIFT)
35
36struct pinmux_gpio {
37 pinmux_enum_t enum_id;
38 pinmux_flag_t flags;
39};
40
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
43
44struct pinmux_cfg_reg {
45 unsigned long reg, reg_width, field_width;
46 unsigned long *cnt;
47 pinmux_enum_t *enum_ids;
48};
49
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)]) \
54
55struct pinmux_data_reg {
56 unsigned long reg, reg_width, reg_shadow;
57 pinmux_enum_t *enum_ids;
58};
59
60#define PINMUX_DATA_REG(name, r, r_width) \
61 .reg = r, .reg_width = r_width, \
62 .enum_ids = (pinmux_enum_t [r_width]) \
63
64struct pinmux_range {
65 pinmux_enum_t begin;
66 pinmux_enum_t end;
67 pinmux_enum_t force;
68};
69
70struct pinmux_info {
71 char *name;
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;
80
81 unsigned first_gpio, last_gpio;
82
83 struct pinmux_gpio *gpios;
84 struct pinmux_cfg_reg *cfg_regs;
85 struct pinmux_data_reg *data_regs;
86
87 pinmux_enum_t *gpio_data;
88 unsigned int gpio_data_size;
89
90 unsigned long *gpio_in_use;
91 struct gpio_chip chip;
92};
93
94int register_pinmux(struct pinmux_info *pip);
Paul Mundtb72421d2010-10-04 03:54:56 +090095int unregister_pinmux(struct pinmux_info *pip);
Magnus Dammfae43392009-11-27 07:38:01 +000096
97#endif /* __SH_PFC_H */