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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 | ||
69aba794 SK |
15 | struct device; |
16 | struct device_node; | |
17 | /* consumer cookie */ | |
18 | struct nvmem_cell; | |
e2a5402e | 19 | struct nvmem_device; |
69aba794 | 20 | |
eace75cf SK |
21 | struct nvmem_cell_info { |
22 | const char *name; | |
23 | unsigned int offset; | |
24 | unsigned int bytes; | |
25 | unsigned int bit_offset; | |
26 | unsigned int nbits; | |
27 | }; | |
28 | ||
69aba794 SK |
29 | #if IS_ENABLED(CONFIG_NVMEM) |
30 | ||
31 | /* Cell based interface */ | |
32 | struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *name); | |
33 | struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, const char *name); | |
34 | void nvmem_cell_put(struct nvmem_cell *cell); | |
35 | void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell); | |
36 | void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len); | |
37 | int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len); | |
38 | ||
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39 | /* direct nvmem device read/write interface */ |
40 | struct nvmem_device *nvmem_device_get(struct device *dev, const char *name); | |
41 | struct nvmem_device *devm_nvmem_device_get(struct device *dev, | |
42 | const char *name); | |
43 | void nvmem_device_put(struct nvmem_device *nvmem); | |
44 | void devm_nvmem_device_put(struct device *dev, struct nvmem_device *nvmem); | |
45 | int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset, | |
46 | size_t bytes, void *buf); | |
47 | int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset, | |
48 | size_t bytes, void *buf); | |
49 | ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, | |
50 | struct nvmem_cell_info *info, void *buf); | |
51 | int nvmem_device_cell_write(struct nvmem_device *nvmem, | |
52 | struct nvmem_cell_info *info, void *buf); | |
53 | ||
69aba794 SK |
54 | #else |
55 | ||
56 | static inline struct nvmem_cell *nvmem_cell_get(struct device *dev, | |
57 | const char *name) | |
58 | { | |
59 | return ERR_PTR(-ENOSYS); | |
60 | } | |
61 | ||
62 | static inline struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, | |
63 | const char *name) | |
64 | { | |
65 | return ERR_PTR(-ENOSYS); | |
66 | } | |
67 | ||
68 | static inline void devm_nvmem_cell_put(struct device *dev, | |
69 | struct nvmem_cell *cell) | |
70 | { | |
71 | ||
72 | } | |
73 | static inline void nvmem_cell_put(struct nvmem_cell *cell) | |
74 | { | |
75 | } | |
76 | ||
77 | static inline char *nvmem_cell_read(struct nvmem_cell *cell, size_t *len) | |
78 | { | |
79 | return ERR_PTR(-ENOSYS); | |
80 | } | |
81 | ||
82 | static inline int nvmem_cell_write(struct nvmem_cell *cell, | |
83 | const char *buf, size_t len) | |
84 | { | |
85 | return -ENOSYS; | |
86 | } | |
e2a5402e SK |
87 | |
88 | static inline struct nvmem_device *nvmem_device_get(struct device *dev, | |
89 | const char *name) | |
90 | { | |
91 | return ERR_PTR(-ENOSYS); | |
92 | } | |
93 | ||
94 | static inline struct nvmem_device *devm_nvmem_device_get(struct device *dev, | |
95 | const char *name) | |
96 | { | |
97 | return ERR_PTR(-ENOSYS); | |
98 | } | |
99 | ||
100 | static inline void nvmem_device_put(struct nvmem_device *nvmem) | |
101 | { | |
102 | } | |
103 | ||
104 | static inline void devm_nvmem_device_put(struct device *dev, | |
105 | struct nvmem_device *nvmem) | |
106 | { | |
107 | } | |
108 | ||
109 | static inline ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, | |
110 | struct nvmem_cell_info *info, | |
111 | void *buf) | |
112 | { | |
113 | return -ENOSYS; | |
114 | } | |
115 | ||
116 | static inline int nvmem_device_cell_write(struct nvmem_device *nvmem, | |
117 | struct nvmem_cell_info *info, | |
118 | void *buf) | |
119 | { | |
120 | return -ENOSYS; | |
121 | } | |
122 | ||
123 | static inline int nvmem_device_read(struct nvmem_device *nvmem, | |
124 | unsigned int offset, size_t bytes, | |
125 | void *buf) | |
126 | { | |
127 | return -ENOSYS; | |
128 | } | |
129 | ||
130 | static inline int nvmem_device_write(struct nvmem_device *nvmem, | |
131 | unsigned int offset, size_t bytes, | |
132 | void *buf) | |
133 | { | |
134 | return -ENOSYS; | |
135 | } | |
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136 | #endif /* CONFIG_NVMEM */ |
137 | ||
138 | #if IS_ENABLED(CONFIG_NVMEM) && IS_ENABLED(CONFIG_OF) | |
139 | struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, | |
140 | const char *name); | |
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141 | struct nvmem_device *of_nvmem_device_get(struct device_node *np, |
142 | const char *name); | |
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143 | #else |
144 | static inline struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, | |
145 | const char *name) | |
146 | { | |
147 | return ERR_PTR(-ENOSYS); | |
148 | } | |
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149 | |
150 | static inline struct nvmem_device *of_nvmem_device_get(struct device_node *np, | |
151 | const char *name) | |
152 | { | |
153 | return ERR_PTR(-ENOSYS); | |
154 | } | |
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155 | #endif /* CONFIG_NVMEM && CONFIG_OF */ |
156 | ||
eace75cf | 157 | #endif /* ifndef _LINUX_NVMEM_CONSUMER_H */ |