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Linux kernel mirror (for testing)
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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
15struct dentry;
16struct seq_file;
17
18struct pinctrl_dev;
19struct pinctrl_gpio_range;
20struct pinctrl_map;
21struct pinctrl_setting;
22
23#ifdef CONFIG_PINMUX
24
25int pinmux_check_ops(struct pinctrl_dev *pctldev);
26
27int pinmux_validate_map(const struct pinctrl_map *map, int i);
28
29bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, unsigned int pin);
30
31int pinmux_request_gpio(struct pinctrl_dev *pctldev,
32 struct pinctrl_gpio_range *range,
33 unsigned int pin, unsigned int gpio);
34void pinmux_free_gpio(struct pinctrl_dev *pctldev, unsigned int pin,
35 struct pinctrl_gpio_range *range);
36int pinmux_gpio_direction(struct pinctrl_dev *pctldev,
37 struct pinctrl_gpio_range *range,
38 unsigned int pin, bool input);
39
40int pinmux_map_to_setting(const struct pinctrl_map *map,
41 struct pinctrl_setting *setting);
42void pinmux_free_setting(const struct pinctrl_setting *setting);
43int pinmux_enable_setting(const struct pinctrl_setting *setting);
44void pinmux_disable_setting(const struct pinctrl_setting *setting);
45
46#else
47
48static inline int pinmux_check_ops(struct pinctrl_dev *pctldev)
49{
50 return 0;
51}
52
53static inline int pinmux_validate_map(const struct pinctrl_map *map, int i)
54{
55 return 0;
56}
57
58static inline bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev,
59 unsigned int pin)
60{
61 return true;
62}
63
64static 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
71static inline void pinmux_free_gpio(struct pinctrl_dev *pctldev,
72 unsigned int pin,
73 struct pinctrl_gpio_range *range)
74{
75}
76
77static 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
84static inline int pinmux_map_to_setting(const struct pinctrl_map *map,
85 struct pinctrl_setting *setting)
86{
87 return 0;
88}
89
90static inline void pinmux_free_setting(const struct pinctrl_setting *setting)
91{
92}
93
94static inline int pinmux_enable_setting(const struct pinctrl_setting *setting)
95{
96 return 0;
97}
98
99static 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
107void pinmux_show_map(struct seq_file *s, const struct pinctrl_map *map);
108void pinmux_show_setting(struct seq_file *s,
109 const struct pinctrl_setting *setting);
110void pinmux_init_device_debugfs(struct dentry *devroot,
111 struct pinctrl_dev *pctldev);
112
113#else
114
115static inline void pinmux_show_map(struct seq_file *s,
116 const struct pinctrl_map *map)
117{
118}
119
120static inline void pinmux_show_setting(struct seq_file *s,
121 const struct pinctrl_setting *setting)
122{
123}
124
125static 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 */
139struct 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
151int pinmux_generic_get_function_count(struct pinctrl_dev *pctldev);
152
153const char *
154pinmux_generic_get_function_name(struct pinctrl_dev *pctldev,
155 unsigned int selector);
156
157int pinmux_generic_get_function_groups(struct pinctrl_dev *pctldev,
158 unsigned int selector,
159 const char * const **groups,
160 unsigned int * const ngroups);
161
162struct function_desc *pinmux_generic_get_function(struct pinctrl_dev *pctldev,
163 unsigned int selector);
164
165int 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
171int pinmux_generic_remove_function(struct pinctrl_dev *pctldev,
172 unsigned int selector);
173
174void pinmux_generic_free_functions(struct pinctrl_dev *pctldev);
175
176#else
177
178static inline void pinmux_generic_free_functions(struct pinctrl_dev *pctldev)
179{
180}
181
182#endif /* CONFIG_GENERIC_PINMUX_FUNCTIONS */