Merge branch 'address-masking'
[linux-2.6-microblaze.git] / drivers / pinctrl / pinmux.h
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Internal interface between the core pin control system and the
4  * pinmux portions
5  *
6  * Copyright (C) 2011 ST-Ericsson SA
7  * Written on behalf of Linaro for ST-Ericsson
8  * Based on bits of regulator core, gpio core and clk core
9  *
10  * Author: Linus Walleij <linus.walleij@linaro.org>
11  */
12
13 #include <linux/types.h>
14
15 struct dentry;
16 struct seq_file;
17
18 struct pinctrl_dev;
19 struct pinctrl_gpio_range;
20 struct pinctrl_map;
21 struct pinctrl_setting;
22
23 #ifdef CONFIG_PINMUX
24
25 int pinmux_check_ops(struct pinctrl_dev *pctldev);
26
27 int pinmux_validate_map(const struct pinctrl_map *map, int i);
28
29 bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, unsigned int pin);
30
31 int pinmux_request_gpio(struct pinctrl_dev *pctldev,
32                         struct pinctrl_gpio_range *range,
33                         unsigned int pin, unsigned int gpio);
34 void pinmux_free_gpio(struct pinctrl_dev *pctldev, unsigned int pin,
35                       struct pinctrl_gpio_range *range);
36 int pinmux_gpio_direction(struct pinctrl_dev *pctldev,
37                           struct pinctrl_gpio_range *range,
38                           unsigned int pin, bool input);
39
40 int pinmux_map_to_setting(const struct pinctrl_map *map,
41                           struct pinctrl_setting *setting);
42 void pinmux_free_setting(const struct pinctrl_setting *setting);
43 int pinmux_enable_setting(const struct pinctrl_setting *setting);
44 void pinmux_disable_setting(const struct pinctrl_setting *setting);
45
46 #else
47
48 static inline int pinmux_check_ops(struct pinctrl_dev *pctldev)
49 {
50         return 0;
51 }
52
53 static inline int pinmux_validate_map(const struct pinctrl_map *map, int i)
54 {
55         return 0;
56 }
57
58 static inline bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev,
59                                                unsigned int pin)
60 {
61         return true;
62 }
63
64 static inline int pinmux_request_gpio(struct pinctrl_dev *pctldev,
65                         struct pinctrl_gpio_range *range,
66                         unsigned int pin, unsigned int gpio)
67 {
68         return 0;
69 }
70
71 static inline void pinmux_free_gpio(struct pinctrl_dev *pctldev,
72                                     unsigned int pin,
73                                     struct pinctrl_gpio_range *range)
74 {
75 }
76
77 static inline int pinmux_gpio_direction(struct pinctrl_dev *pctldev,
78                                         struct pinctrl_gpio_range *range,
79                                         unsigned int pin, bool input)
80 {
81         return 0;
82 }
83
84 static inline int pinmux_map_to_setting(const struct pinctrl_map *map,
85                           struct pinctrl_setting *setting)
86 {
87         return 0;
88 }
89
90 static inline void pinmux_free_setting(const struct pinctrl_setting *setting)
91 {
92 }
93
94 static inline int pinmux_enable_setting(const struct pinctrl_setting *setting)
95 {
96         return 0;
97 }
98
99 static inline void pinmux_disable_setting(const struct pinctrl_setting *setting)
100 {
101 }
102
103 #endif
104
105 #if defined(CONFIG_PINMUX) && defined(CONFIG_DEBUG_FS)
106
107 void pinmux_show_map(struct seq_file *s, const struct pinctrl_map *map);
108 void pinmux_show_setting(struct seq_file *s,
109                          const struct pinctrl_setting *setting);
110 void pinmux_init_device_debugfs(struct dentry *devroot,
111                                 struct pinctrl_dev *pctldev);
112
113 #else
114
115 static inline void pinmux_show_map(struct seq_file *s,
116                                    const struct pinctrl_map *map)
117 {
118 }
119
120 static inline void pinmux_show_setting(struct seq_file *s,
121                                        const struct pinctrl_setting *setting)
122 {
123 }
124
125 static inline void pinmux_init_device_debugfs(struct dentry *devroot,
126                                               struct pinctrl_dev *pctldev)
127 {
128 }
129
130 #endif
131
132 #ifdef CONFIG_GENERIC_PINMUX_FUNCTIONS
133
134 /**
135  * struct function_desc - generic function descriptor
136  * @func: generic data of the pin function (name and groups of pins)
137  * @data: pin controller driver specific data
138  */
139 struct function_desc {
140         struct pinfunction func;
141         void *data;
142 };
143
144 /* Convenient macro to define a generic pin function descriptor */
145 #define PINCTRL_FUNCTION_DESC(_name, _grps, _num_grps, _data)   \
146 (struct function_desc) {                                        \
147         .func = PINCTRL_PINFUNCTION(_name, _grps, _num_grps),   \
148         .data = _data,                                          \
149 }
150
151 int pinmux_generic_get_function_count(struct pinctrl_dev *pctldev);
152
153 const char *
154 pinmux_generic_get_function_name(struct pinctrl_dev *pctldev,
155                                  unsigned int selector);
156
157 int pinmux_generic_get_function_groups(struct pinctrl_dev *pctldev,
158                                        unsigned int selector,
159                                        const char * const **groups,
160                                        unsigned int * const ngroups);
161
162 struct function_desc *pinmux_generic_get_function(struct pinctrl_dev *pctldev,
163                                                   unsigned int selector);
164
165 int pinmux_generic_add_function(struct pinctrl_dev *pctldev,
166                                 const char *name,
167                                 const char * const *groups,
168                                 unsigned int const ngroups,
169                                 void *data);
170
171 int pinmux_generic_remove_function(struct pinctrl_dev *pctldev,
172                                    unsigned int selector);
173
174 void pinmux_generic_free_functions(struct pinctrl_dev *pctldev);
175
176 #else
177
178 static inline void pinmux_generic_free_functions(struct pinctrl_dev *pctldev)
179 {
180 }
181
182 #endif /* CONFIG_GENERIC_PINMUX_FUNCTIONS */