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 #include <linux/gpio/consumer.h>
  13
  14 struct nvmem_device {
  15         struct module           *owner;
  16         struct device           dev;
  17         int                     stride;
  18         int                     word_size;
  19         int                     id;
  20         struct kref             refcnt;
  21         size_t                  size;
  22         bool                    read_only;
  23         int                     flags;
  24         enum nvmem_type         type;
  25         struct bin_attribute    eeprom;
  26         struct device           *base_dev;
  27         struct list_head        cells;
  28         nvmem_reg_read_t        reg_read;
  29         nvmem_reg_write_t       reg_write;
  30         struct gpio_desc        *wp_gpio;
  31         void *priv;
  32 };
  33
  34 #define to_nvmem_device(d) container_of(d, struct nvmem_device, dev)
  35 #define FLAG_COMPAT             BIT(0)
  36
  37 #ifdef CONFIG_NVMEM_SYSFS
  38 const struct attribute_group **nvmem_sysfs_get_groups(
  39                                         struct nvmem_device *nvmem,
  40                                         const struct nvmem_config *config);
  41 int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem,
  42                               const struct nvmem_config *config);
  43 void nvmem_sysfs_remove_compat(struct nvmem_device *nvmem,
  44                               const struct nvmem_config *config);
  45 #else
  46 static inline const struct attribute_group **nvmem_sysfs_get_groups(
  47                                         struct nvmem_device *nvmem,
  48                                         const struct nvmem_config *config)
  49 {
  50         return NULL;
  51 }
  52
  53 static inline int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem,
  54                                       const struct nvmem_config *config)
  55 {
  56         return -ENOSYS;
  57 }
  58 static inline void nvmem_sysfs_remove_compat(struct nvmem_device *nvmem,
  59                               const struct nvmem_config *config)
  60 {
  61 }
  62 #endif /* CONFIG_NVMEM_SYSFS */
  63
  64 #endif /* _DRIVERS_NVMEM_H */