include/w1.h

   1 /* SPDX-License-Identifier:     GPL-2.0+
   2  *
   3  * Copyright (c) 2015 Free Electrons
   4  * Copyright (c) 2015 NextThing Co
   5  *
   6  */
   7
   8 #ifndef __W1_H
   9 #define __W1_H
  10
  11 #include <dm.h>
  12
  13 #define W1_FAMILY_DS24B33       0x23
  14 #define W1_FAMILY_DS2431        0x2d
  15 #define W1_FAMILY_EEP_SANDBOX   0xfe
  16
  17 struct w1_device {
  18         u64     id;
  19 };
  20
  21 struct w1_ops {
  22         u8      (*read_byte)(struct udevice *dev);
  23         bool    (*reset)(struct udevice *dev);
  24         u8      (*triplet)(struct udevice *dev, bool bdir);
  25         void    (*write_byte)(struct udevice *dev, u8 byte);
  26 };
  27
  28 int w1_get_bus(int busnum, struct udevice **busp);
  29 u8 w1_get_device_family(struct udevice *dev);
  30
  31 int w1_read_buf(struct udevice *dev, u8 *buf, unsigned int count);
  32 int w1_read_byte(struct udevice *dev);
  33 int w1_reset_select(struct udevice *dev);
  34 int w1_write_buf(struct udevice *dev, u8 *buf, unsigned int count);
  35 int w1_write_byte(struct udevice *dev, u8 byte);
  36
  37 #endif