61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*
|
|
* nvmem framework provider.
|
|
*
|
|
* Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
|
|
* Copyright (C) 2013 Maxime Ripard <maxime.ripard@free-electrons.com>
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#ifndef _LINUX_NVMEM_PROVIDER_H
|
|
#define _LINUX_NVMEM_PROVIDER_H
|
|
|
|
struct nvmem_device;
|
|
struct nvmem_cell_info;
|
|
typedef int (*nvmem_reg_read_t)(void *priv, unsigned int offset,
|
|
void *val, size_t bytes);
|
|
typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
|
|
void *val, size_t bytes);
|
|
|
|
struct nvmem_config {
|
|
struct device *dev;
|
|
const char *name;
|
|
int id;
|
|
struct module *owner;
|
|
const struct nvmem_cell_info *cells;
|
|
int ncells;
|
|
bool read_only;
|
|
bool root_only;
|
|
nvmem_reg_read_t reg_read;
|
|
nvmem_reg_write_t reg_write;
|
|
int size;
|
|
int word_size;
|
|
int stride;
|
|
void *priv;
|
|
/* To be only used by old driver/misc/eeprom drivers */
|
|
bool compat;
|
|
struct device *base_dev;
|
|
};
|
|
|
|
#if IS_ENABLED(CONFIG_NVMEM)
|
|
|
|
struct nvmem_device *nvmem_register(const struct nvmem_config *cfg);
|
|
int nvmem_unregister(struct nvmem_device *nvmem);
|
|
|
|
#else
|
|
|
|
static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c)
|
|
{
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
|
|
static inline int nvmem_unregister(struct nvmem_device *nvmem)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
#endif /* CONFIG_NVMEM */
|
|
#endif /* ifndef _LINUX_NVMEM_PROVIDER_H */
|