drivers/nvmem/nvmem.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef _DRIVERS_NVMEM_H
   4 #define _DRIVERS_NVMEM_H
   5
   6 #include <linux/device.h>
   7 #include <linux/fs.h>
   8 #include <linux/kref.h>
   9 #include <linux/list.h>
  10 #include <linux/nvmem-consumer.h>
  11 #include <linux/nvmem-provider.h>
  12
  13 struct nvmem_device {
  14         struct module           *owner;
  15         struct device           dev;
  16         int                     stride;
  17         int                     word_size;
  18         int                     id;
  19         struct kref             refcnt;
  20         size_t                  size;
  21         bool                    read_only;
  22         int                     flags;
  23         enum nvmem_type         type;
  24         struct bin_attribute    eeprom;
  25         struct device           *base_dev;
  26         struct list_head        cells;
  27         nvmem_reg_read_t        reg_read;
  28         nvmem_reg_write_t       reg_write;
  29         void *priv;
  30 };
  31
  32 #define to_nvmem_device(d) container_of(d, struct nvmem_device, dev)
  33 #define FLAG_COMPAT             BIT(0)
  34
  35 #ifdef CONFIG_NVMEM_SYSFS
  36 const struct attribute_group **nvmem_sysfs_get_groups(
  37                                         struct nvmem_device *nvmem,
  38                                         const struct nvmem_config *config);
  39 int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem,
  40                               const struct nvmem_config *config);
  41 void nvmem_sysfs_remove_compat(struct nvmem_device *nvmem,
  42                               const struct nvmem_config *config);
  43 #else
  44 static inline const struct attribute_group **nvmem_sysfs_get_groups(
  45                                         struct nvmem_device *nvmem,
  46                                         const struct nvmem_config *config)
  47 {
  48         return NULL;
  49 }
  50
  51 static inline int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem,
  52                                       const struct nvmem_config *config)
  53 {
  54         return -ENOSYS;
  55 }
  56 static inline void nvmem_sysfs_remove_compat(struct nvmem_device *nvmem,
  57                               const struct nvmem_config *config)
  58 {
  59 }
  60 #endif /* CONFIG_NVMEM_SYSFS */
  61
  62 #endif /* _DRIVERS_NVMEM_H */