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eace75cf SK |
1 | /* |
2 | * nvmem framework consumer. | |
3 | * | |
4 | * Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | |
5 | * Copyright (C) 2013 Maxime Ripard <maxime.ripard@free-electrons.com> | |
6 | * | |
7 | * This file is licensed under the terms of the GNU General Public | |
8 | * License version 2. This program is licensed "as is" without any | |
9 | * warranty of any kind, whether express or implied. | |
10 | */ | |
11 | ||
12 | #ifndef _LINUX_NVMEM_CONSUMER_H | |
13 | #define _LINUX_NVMEM_CONSUMER_H | |
14 | ||
4da69f49 SK |
15 | #include <linux/err.h> |
16 | #include <linux/errno.h> | |
17 | ||
69aba794 SK |
18 | struct device; |
19 | struct device_node; | |
20 | /* consumer cookie */ | |
21 | struct nvmem_cell; | |
e2a5402e | 22 | struct nvmem_device; |
69aba794 | 23 | |
eace75cf SK |
24 | struct nvmem_cell_info { |
25 | const char *name; | |
26 | unsigned int offset; | |
27 | unsigned int bytes; | |
28 | unsigned int bit_offset; | |
29 | unsigned int nbits; | |
30 | }; | |
31 | ||
69aba794 SK |
32 | #if IS_ENABLED(CONFIG_NVMEM) |
33 | ||
34 | /* Cell based interface */ | |
35 | struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *name); | |
36 | struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, const char *name); | |
37 | void nvmem_cell_put(struct nvmem_cell *cell); | |
38 | void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell); | |
39 | void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len); | |
40 | int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len); | |
d026d70a | 41 | int nvmem_cell_read_u32(struct device *dev, const char *cell_id, u32 *val); |
69aba794 | 42 | |
e2a5402e SK |
43 | /* direct nvmem device read/write interface */ |
44 | struct nvmem_device *nvmem_device_get(struct device *dev, const char *name); | |
45 | struct nvmem_device *devm_nvmem_device_get(struct device *dev, | |
46 | const char *name); | |
47 | void nvmem_device_put(struct nvmem_device *nvmem); | |
48 | void devm_nvmem_device_put(struct device *dev, struct nvmem_device *nvmem); | |
49 | int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset, | |
50 | size_t bytes, void *buf); | |
51 | int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset, | |
52 | size_t bytes, void *buf); | |
53 | ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, | |
54 | struct nvmem_cell_info *info, void *buf); | |
55 | int nvmem_device_cell_write(struct nvmem_device *nvmem, | |
56 | struct nvmem_cell_info *info, void *buf); | |
57 | ||
69aba794 SK |
58 | #else |
59 | ||
60 | static inline struct nvmem_cell *nvmem_cell_get(struct device *dev, | |
61 | const char *name) | |
62 | { | |
63 | return ERR_PTR(-ENOSYS); | |
64 | } | |
65 | ||
66 | static inline struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, | |
67 | const char *name) | |
68 | { | |
69 | return ERR_PTR(-ENOSYS); | |
70 | } | |
71 | ||
72 | static inline void devm_nvmem_cell_put(struct device *dev, | |
73 | struct nvmem_cell *cell) | |
74 | { | |
75 | ||
76 | } | |
77 | static inline void nvmem_cell_put(struct nvmem_cell *cell) | |
78 | { | |
79 | } | |
80 | ||
a6c50912 | 81 | static inline void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len) |
69aba794 SK |
82 | { |
83 | return ERR_PTR(-ENOSYS); | |
84 | } | |
85 | ||
86 | static inline int nvmem_cell_write(struct nvmem_cell *cell, | |
87 | const char *buf, size_t len) | |
88 | { | |
89 | return -ENOSYS; | |
90 | } | |
e2a5402e | 91 | |
d026d70a LC |
92 | static inline int nvmem_cell_read_u32(struct device *dev, |
93 | const char *cell_id, u32 *val) | |
94 | { | |
95 | return -ENOSYS; | |
96 | } | |
97 | ||
e2a5402e SK |
98 | static inline struct nvmem_device *nvmem_device_get(struct device *dev, |
99 | const char *name) | |
100 | { | |
101 | return ERR_PTR(-ENOSYS); | |
102 | } | |
103 | ||
104 | static inline struct nvmem_device *devm_nvmem_device_get(struct device *dev, | |
105 | const char *name) | |
106 | { | |
107 | return ERR_PTR(-ENOSYS); | |
108 | } | |
109 | ||
110 | static inline void nvmem_device_put(struct nvmem_device *nvmem) | |
111 | { | |
112 | } | |
113 | ||
114 | static inline void devm_nvmem_device_put(struct device *dev, | |
115 | struct nvmem_device *nvmem) | |
116 | { | |
117 | } | |
118 | ||
119 | static inline ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, | |
120 | struct nvmem_cell_info *info, | |
121 | void *buf) | |
122 | { | |
123 | return -ENOSYS; | |
124 | } | |
125 | ||
126 | static inline int nvmem_device_cell_write(struct nvmem_device *nvmem, | |
127 | struct nvmem_cell_info *info, | |
128 | void *buf) | |
129 | { | |
130 | return -ENOSYS; | |
131 | } | |
132 | ||
133 | static inline int nvmem_device_read(struct nvmem_device *nvmem, | |
134 | unsigned int offset, size_t bytes, | |
135 | void *buf) | |
136 | { | |
137 | return -ENOSYS; | |
138 | } | |
139 | ||
140 | static inline int nvmem_device_write(struct nvmem_device *nvmem, | |
141 | unsigned int offset, size_t bytes, | |
142 | void *buf) | |
143 | { | |
144 | return -ENOSYS; | |
145 | } | |
69aba794 SK |
146 | #endif /* CONFIG_NVMEM */ |
147 | ||
148 | #if IS_ENABLED(CONFIG_NVMEM) && IS_ENABLED(CONFIG_OF) | |
149 | struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, | |
150 | const char *name); | |
e2a5402e SK |
151 | struct nvmem_device *of_nvmem_device_get(struct device_node *np, |
152 | const char *name); | |
69aba794 SK |
153 | #else |
154 | static inline struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, | |
155 | const char *name) | |
156 | { | |
157 | return ERR_PTR(-ENOSYS); | |
158 | } | |
e2a5402e SK |
159 | |
160 | static inline struct nvmem_device *of_nvmem_device_get(struct device_node *np, | |
161 | const char *name) | |
162 | { | |
163 | return ERR_PTR(-ENOSYS); | |
164 | } | |
69aba794 SK |
165 | #endif /* CONFIG_NVMEM && CONFIG_OF */ |
166 | ||
eace75cf | 167 | #endif /* ifndef _LINUX_NVMEM_CONSUMER_H */ |