projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |