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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266/* SPDX-License-Identifier: GPL-2.0 *//* * nvmem framework consumer. * * Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org> * Copyright (C) 2013 Maxime Ripard <maxime.ripard@free-electrons.com> */
#ifndef _LINUX_NVMEM_CONSUMER_H#define _LINUX_NVMEM_CONSUMER_H
#include <linux/err.h>#include <linux/errno.h>#include <linux/notifier.h>
struct device;struct device_node;/* consumer cookie */struct nvmem_cell;struct nvmem_device;struct nvmem_cell_info;
/** * struct nvmem_cell_lookup - cell lookup entry * * @nvmem_name: Name of the provider. * @cell_name: Name of the nvmem cell as defined in the name field of * struct nvmem_cell_info. * @dev_id: Name of the consumer device that will be associated with * this cell. * @con_id: Connector id for this cell lookup. */struct nvmem_cell_lookup { const char *nvmem_name; const char *cell_name; const char *dev_id; const char *con_id; struct list_head node;};
enum { NVMEM_ADD = 1, NVMEM_REMOVE, NVMEM_CELL_ADD, NVMEM_CELL_REMOVE, NVMEM_LAYOUT_ADD, NVMEM_LAYOUT_REMOVE,};
#if IS_ENABLED(CONFIG_NVMEM)
/* Cell based interface */struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *id);struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, const char *id);void nvmem_cell_put(struct nvmem_cell *cell);void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell);void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len);int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len);int nvmem_cell_read_u8(struct device *dev, const char *cell_id, u8 *val);int nvmem_cell_read_u16(struct device *dev, const char *cell_id, u16 *val);int nvmem_cell_read_u32(struct device *dev, const char *cell_id, u32 *val);int nvmem_cell_read_u64(struct device *dev, const char *cell_id, u64 *val);int nvmem_cell_read_variable_le_u32(struct device *dev, const char *cell_id, u32 *val);int nvmem_cell_read_variable_le_u64(struct device *dev, const char *cell_id, u64 *val);
/* direct nvmem device read/write interface */struct nvmem_device *nvmem_device_get(struct device *dev, const char *name);struct nvmem_device *devm_nvmem_device_get(struct device *dev, const char *name);void nvmem_device_put(struct nvmem_device *nvmem);void devm_nvmem_device_put(struct device *dev, struct nvmem_device *nvmem);int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf);int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf);ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf);int nvmem_device_cell_write(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf);
const char *nvmem_dev_name(struct nvmem_device *nvmem);size_t nvmem_dev_size(struct nvmem_device *nvmem);
void nvmem_add_cell_lookups(struct nvmem_cell_lookup *entries, size_t nentries);void nvmem_del_cell_lookups(struct nvmem_cell_lookup *entries, size_t nentries);
int nvmem_register_notifier(struct notifier_block *nb);int nvmem_unregister_notifier(struct notifier_block *nb);
struct nvmem_device *nvmem_device_find(void *data, int (*match)(struct device *dev, const void *data));
#else
static inline struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *id){ return ERR_PTR(-EOPNOTSUPP);}
static inline struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, const char *id){ return ERR_PTR(-EOPNOTSUPP);}
static inline void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell){
}static inline void nvmem_cell_put(struct nvmem_cell *cell){}
static inline void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len){ return ERR_PTR(-EOPNOTSUPP);}
static inline int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len){ return -EOPNOTSUPP;}
static inline int nvmem_cell_read_u8(struct device *dev, const char *cell_id, u8 *val){ return -EOPNOTSUPP;}
static inline int nvmem_cell_read_u16(struct device *dev, const char *cell_id, u16 *val){ return -EOPNOTSUPP;}
static inline int nvmem_cell_read_u32(struct device *dev, const char *cell_id, u32 *val){ return -EOPNOTSUPP;}
static inline int nvmem_cell_read_u64(struct device *dev, const char *cell_id, u64 *val){ return -EOPNOTSUPP;}
static inline int nvmem_cell_read_variable_le_u32(struct device *dev, const char *cell_id, u32 *val){ return -EOPNOTSUPP;}
static inline int nvmem_cell_read_variable_le_u64(struct device *dev, const char *cell_id, u64 *val){ return -EOPNOTSUPP;}
static inline struct nvmem_device *nvmem_device_get(struct device *dev, const char *name){ return ERR_PTR(-EOPNOTSUPP);}
static inline struct nvmem_device *devm_nvmem_device_get(struct device *dev, const char *name){ return ERR_PTR(-EOPNOTSUPP);}
static inline void nvmem_device_put(struct nvmem_device *nvmem){}
static inline void devm_nvmem_device_put(struct device *dev, struct nvmem_device *nvmem){}
static inline ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf){ return -EOPNOTSUPP;}
static inline int nvmem_device_cell_write(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf){ return -EOPNOTSUPP;}
static inline int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf){ return -EOPNOTSUPP;}
static inline int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf){ return -EOPNOTSUPP;}
static inline const char *nvmem_dev_name(struct nvmem_device *nvmem){ return NULL;}
static inline voidnvmem_add_cell_lookups(struct nvmem_cell_lookup *entries, size_t nentries) {}static inline voidnvmem_del_cell_lookups(struct nvmem_cell_lookup *entries, size_t nentries) {}
static inline int nvmem_register_notifier(struct notifier_block *nb){ return -EOPNOTSUPP;}
static inline int nvmem_unregister_notifier(struct notifier_block *nb){ return -EOPNOTSUPP;}
static inline struct nvmem_device *nvmem_device_find(void *data, int (*match)(struct device *dev, const void *data)){ return NULL;}
#endif /* CONFIG_NVMEM */
#if IS_ENABLED(CONFIG_NVMEM) && IS_ENABLED(CONFIG_OF)struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, const char *id);struct nvmem_device *of_nvmem_device_get(struct device_node *np, const char *name);#elsestatic inline struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, const char *id){ return ERR_PTR(-EOPNOTSUPP);}
static inline struct nvmem_device *of_nvmem_device_get(struct device_node *np, const char *name){ return ERR_PTR(-EOPNOTSUPP);}#endif /* CONFIG_NVMEM && CONFIG_OF */
#endif /* ifndef _LINUX_NVMEM_CONSUMER_H */