text: /*
   * 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 */
  