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 };
  27
  28 #if IS_ENABLED(CONFIG_NVMEM)
  29
  30 struct nvmem_device *nvmem_register(const struct nvmem_config *cfg);
  31 int nvmem_unregister(struct nvmem_device *nvmem);
  32
  33 #else
  34
  35 static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c)
  36 {
  37         return ERR_PTR(-ENOSYS);
  38 }
  39
  40 static inline int nvmem_unregister(struct nvmem_device *nvmem)
  41 {
  42         return -ENOSYS;
  43 }
  44
  45 #endif /* CONFIG_NVMEM */
  46
  47 #endif  /* ifndef _LINUX_NVMEM_PROVIDER_H */