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eace75cf SK |
1 | /* |
2 | * nvmem framework provider. | |
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_PROVIDER_H | |
13 | #define _LINUX_NVMEM_PROVIDER_H | |
14 | ||
15 | struct nvmem_device; | |
16 | struct nvmem_cell_info; | |
795ddd18 SK |
17 | typedef int (*nvmem_reg_read_t)(void *priv, unsigned int offset, |
18 | void *val, size_t bytes); | |
19 | typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset, | |
20 | void *val, size_t bytes); | |
eace75cf SK |
21 | |
22 | struct nvmem_config { | |
23 | struct device *dev; | |
24 | const char *name; | |
25 | int id; | |
26 | struct module *owner; | |
27 | const struct nvmem_cell_info *cells; | |
28 | int ncells; | |
29 | bool read_only; | |
811b0d65 | 30 | bool root_only; |
795ddd18 SK |
31 | nvmem_reg_read_t reg_read; |
32 | nvmem_reg_write_t reg_write; | |
33 | int size; | |
34 | int word_size; | |
35 | int stride; | |
36 | void *priv; | |
b6c217ab AL |
37 | /* To be only used by old driver/misc/eeprom drivers */ |
38 | bool compat; | |
39 | struct device *base_dev; | |
eace75cf SK |
40 | }; |
41 | ||
42 | #if IS_ENABLED(CONFIG_NVMEM) | |
43 | ||
44 | struct nvmem_device *nvmem_register(const struct nvmem_config *cfg); | |
45 | int nvmem_unregister(struct nvmem_device *nvmem); | |
46 | ||
47 | #else | |
48 | ||
49 | static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c) | |
50 | { | |
51 | return ERR_PTR(-ENOSYS); | |
52 | } | |
53 | ||
54 | static inline int nvmem_unregister(struct nvmem_device *nvmem) | |
55 | { | |
56 | return -ENOSYS; | |
57 | } | |
58 | ||
59 | #endif /* CONFIG_NVMEM */ | |
eace75cf | 60 | #endif /* ifndef _LINUX_NVMEM_PROVIDER_H */ |