include/linux/nvmem-provider.h

   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;
  17
  18 struct nvmem_config {
  19         struct device           *dev;
  20         const char              *name;
  21         int                     id;
  22         struct module           *owner;
  23         const struct nvmem_cell_info    *cells;
  24         int                     ncells;
  25         bool                    read_only;
  26         bool                    root_only;
  27         /* To be only used by old driver/misc/eeprom drivers */
  28         bool                    compat;
  29         struct device           *base_dev;
  30 };
  31
  32 #if IS_ENABLED(CONFIG_NVMEM)
  33
  34 struct nvmem_device *nvmem_register(const struct nvmem_config *cfg);
  35 int nvmem_unregister(struct nvmem_device *nvmem);
  36
  37 #else
  38
  39 static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c)
  40 {
  41         return ERR_PTR(-ENOSYS);
  42 }
  43
  44 static inline int nvmem_unregister(struct nvmem_device *nvmem)
  45 {
  46         return -ENOSYS;
  47 }
  48
  49 #endif /* CONFIG_NVMEM */
  50 #endif  /* ifndef _LINUX_NVMEM_PROVIDER_H */