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28a8d14c LW |
1 | /* |
2 | * Consumer interface the pin control subsystem | |
3 | * | |
4 | * Copyright (C) 2012 ST-Ericsson SA | |
5 | * Written on behalf of Linaro for ST-Ericsson | |
6 | * Based on bits of regulator core, gpio core and clk core | |
7 | * | |
8 | * Author: Linus Walleij <linus.walleij@linaro.org> | |
9 | * | |
10 | * License terms: GNU General Public License (GPL) version 2 | |
11 | */ | |
12 | #ifndef __LINUX_PINCTRL_CONSUMER_H | |
13 | #define __LINUX_PINCTRL_CONSUMER_H | |
14 | ||
6e5e959d | 15 | #include <linux/err.h> |
28a8d14c LW |
16 | #include <linux/list.h> |
17 | #include <linux/seq_file.h> | |
a1ce3928 | 18 | #include <linux/pinctrl/pinctrl-state.h> |
28a8d14c LW |
19 | |
20 | /* This struct is private to the core and should be regarded as a cookie */ | |
e93bcee0 | 21 | struct pinctrl; |
6e5e959d | 22 | struct pinctrl_state; |
ac5aa7f9 | 23 | struct device; |
28a8d14c | 24 | |
befe5bdf | 25 | #ifdef CONFIG_PINCTRL |
28a8d14c | 26 | |
befe5bdf | 27 | /* External interface to pin control */ |
e93bcee0 LW |
28 | extern int pinctrl_request_gpio(unsigned gpio); |
29 | extern void pinctrl_free_gpio(unsigned gpio); | |
30 | extern int pinctrl_gpio_direction_input(unsigned gpio); | |
31 | extern int pinctrl_gpio_direction_output(unsigned gpio); | |
6e5e959d SW |
32 | |
33 | extern struct pinctrl * __must_check pinctrl_get(struct device *dev); | |
e93bcee0 | 34 | extern void pinctrl_put(struct pinctrl *p); |
6e5e959d SW |
35 | extern struct pinctrl_state * __must_check pinctrl_lookup_state( |
36 | struct pinctrl *p, | |
37 | const char *name); | |
38 | extern int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *s); | |
28a8d14c | 39 | |
6d4ca1fb SW |
40 | extern struct pinctrl * __must_check devm_pinctrl_get(struct device *dev); |
41 | extern void devm_pinctrl_put(struct pinctrl *p); | |
42 | ||
befe5bdf | 43 | #else /* !CONFIG_PINCTRL */ |
28a8d14c | 44 | |
e93bcee0 | 45 | static inline int pinctrl_request_gpio(unsigned gpio) |
28a8d14c LW |
46 | { |
47 | return 0; | |
48 | } | |
49 | ||
e93bcee0 | 50 | static inline void pinctrl_free_gpio(unsigned gpio) |
28a8d14c LW |
51 | { |
52 | } | |
53 | ||
e93bcee0 | 54 | static inline int pinctrl_gpio_direction_input(unsigned gpio) |
28a8d14c LW |
55 | { |
56 | return 0; | |
57 | } | |
58 | ||
e93bcee0 | 59 | static inline int pinctrl_gpio_direction_output(unsigned gpio) |
28a8d14c LW |
60 | { |
61 | return 0; | |
62 | } | |
63 | ||
6e5e959d | 64 | static inline struct pinctrl * __must_check pinctrl_get(struct device *dev) |
28a8d14c LW |
65 | { |
66 | return NULL; | |
67 | } | |
68 | ||
e93bcee0 | 69 | static inline void pinctrl_put(struct pinctrl *p) |
28a8d14c LW |
70 | { |
71 | } | |
72 | ||
6e5e959d SW |
73 | static inline struct pinctrl_state * __must_check pinctrl_lookup_state( |
74 | struct pinctrl *p, | |
75 | const char *name) | |
28a8d14c | 76 | { |
6e5e959d | 77 | return NULL; |
28a8d14c LW |
78 | } |
79 | ||
6e5e959d SW |
80 | static inline int pinctrl_select_state(struct pinctrl *p, |
81 | struct pinctrl_state *s) | |
28a8d14c | 82 | { |
6e5e959d | 83 | return 0; |
28a8d14c LW |
84 | } |
85 | ||
6d4ca1fb SW |
86 | static inline struct pinctrl * __must_check devm_pinctrl_get(struct device *dev) |
87 | { | |
88 | return NULL; | |
89 | } | |
90 | ||
91 | static inline void devm_pinctrl_put(struct pinctrl *p) | |
92 | { | |
93 | } | |
94 | ||
befe5bdf | 95 | #endif /* CONFIG_PINCTRL */ |
28a8d14c | 96 | |
6e5e959d SW |
97 | static inline struct pinctrl * __must_check pinctrl_get_select( |
98 | struct device *dev, const char *name) | |
99 | { | |
100 | struct pinctrl *p; | |
101 | struct pinctrl_state *s; | |
102 | int ret; | |
103 | ||
104 | p = pinctrl_get(dev); | |
105 | if (IS_ERR(p)) | |
106 | return p; | |
107 | ||
108 | s = pinctrl_lookup_state(p, name); | |
109 | if (IS_ERR(s)) { | |
110 | pinctrl_put(p); | |
111 | return ERR_PTR(PTR_ERR(s)); | |
112 | } | |
113 | ||
114 | ret = pinctrl_select_state(p, s); | |
115 | if (ret < 0) { | |
116 | pinctrl_put(p); | |
117 | return ERR_PTR(ret); | |
118 | } | |
119 | ||
120 | return p; | |
121 | } | |
122 | ||
123 | static inline struct pinctrl * __must_check pinctrl_get_select_default( | |
124 | struct device *dev) | |
125 | { | |
126 | return pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT); | |
6d4ca1fb SW |
127 | } |
128 | ||
129 | static inline struct pinctrl * __must_check devm_pinctrl_get_select( | |
130 | struct device *dev, const char *name) | |
131 | { | |
132 | struct pinctrl *p; | |
133 | struct pinctrl_state *s; | |
134 | int ret; | |
135 | ||
136 | p = devm_pinctrl_get(dev); | |
137 | if (IS_ERR(p)) | |
138 | return p; | |
139 | ||
140 | s = pinctrl_lookup_state(p, name); | |
141 | if (IS_ERR(s)) { | |
142 | devm_pinctrl_put(p); | |
143 | return ERR_PTR(PTR_ERR(s)); | |
144 | } | |
145 | ||
146 | ret = pinctrl_select_state(p, s); | |
147 | if (ret < 0) { | |
148 | devm_pinctrl_put(p); | |
149 | return ERR_PTR(ret); | |
150 | } | |
151 | ||
152 | return p; | |
153 | } | |
154 | ||
155 | static inline struct pinctrl * __must_check devm_pinctrl_get_select_default( | |
156 | struct device *dev) | |
157 | { | |
158 | return devm_pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT); | |
6e5e959d SW |
159 | } |
160 | ||
28a8d14c LW |
161 | #ifdef CONFIG_PINCONF |
162 | ||
163 | extern int pin_config_get(const char *dev_name, const char *name, | |
164 | unsigned long *config); | |
165 | extern int pin_config_set(const char *dev_name, const char *name, | |
166 | unsigned long config); | |
167 | extern int pin_config_group_get(const char *dev_name, | |
168 | const char *pin_group, | |
169 | unsigned long *config); | |
170 | extern int pin_config_group_set(const char *dev_name, | |
171 | const char *pin_group, | |
172 | unsigned long config); | |
173 | ||
174 | #else | |
175 | ||
176 | static inline int pin_config_get(const char *dev_name, const char *name, | |
177 | unsigned long *config) | |
178 | { | |
179 | return 0; | |
180 | } | |
181 | ||
182 | static inline int pin_config_set(const char *dev_name, const char *name, | |
183 | unsigned long config) | |
184 | { | |
185 | return 0; | |
186 | } | |
187 | ||
188 | static inline int pin_config_group_get(const char *dev_name, | |
189 | const char *pin_group, | |
190 | unsigned long *config) | |
191 | { | |
192 | return 0; | |
193 | } | |
194 | ||
195 | static inline int pin_config_group_set(const char *dev_name, | |
196 | const char *pin_group, | |
197 | unsigned long config) | |
198 | { | |
199 | return 0; | |
200 | } | |
201 | ||
202 | #endif | |
203 | ||
204 | #endif /* __LINUX_PINCTRL_CONSUMER_H */ |