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include/linux/nvmem-consumer.h
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/* * nvmem framework consumer. * * 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_CONSUMER_H #define _LINUX_NVMEM_CONSUMER_H |
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struct device; struct device_node; /* consumer cookie */ struct nvmem_cell; |
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struct nvmem_device; |
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struct nvmem_cell_info { const char *name; unsigned int offset; unsigned int bytes; unsigned int bit_offset; unsigned int nbits; }; |
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#if IS_ENABLED(CONFIG_NVMEM) /* Cell based interface */ struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *name); struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, const char *name); 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); |
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/* 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); |
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#else static inline struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *name) { return ERR_PTR(-ENOSYS); } static inline struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, const char *name) { return ERR_PTR(-ENOSYS); } 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 char *nvmem_cell_read(struct nvmem_cell *cell, size_t *len) { return ERR_PTR(-ENOSYS); } static inline int nvmem_cell_write(struct nvmem_cell *cell, const char *buf, size_t len) { return -ENOSYS; } |
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static inline struct nvmem_device *nvmem_device_get(struct device *dev, const char *name) { return ERR_PTR(-ENOSYS); } static inline struct nvmem_device *devm_nvmem_device_get(struct device *dev, const char *name) { return ERR_PTR(-ENOSYS); } 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 -ENOSYS; } static inline int nvmem_device_cell_write(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf) { return -ENOSYS; } static inline int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf) { return -ENOSYS; } static inline int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf) { return -ENOSYS; } |
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#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 *name); |
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struct nvmem_device *of_nvmem_device_get(struct device_node *np, const char *name); |
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#else static inline struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, const char *name) { return ERR_PTR(-ENOSYS); } |
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static inline struct nvmem_device *of_nvmem_device_get(struct device_node *np, const char *name) { return ERR_PTR(-ENOSYS); } |
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#endif /* CONFIG_NVMEM && CONFIG_OF */ |
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#endif /* ifndef _LINUX_NVMEM_CONSUMER_H */ |