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 16 struct w1_device { 17 u64 id; 18 }; 19 20 struct w1_ops { 21 u8 (*read_byte)(struct udevice *dev); 22 bool (*reset)(struct udevice *dev); 23 u8 (*triplet)(struct udevice *dev, bool bdir); 24 void (*write_byte)(struct udevice *dev, u8 byte); 25 }; 26 27 int w1_get_bus(int busnum, struct udevice **busp); 28 u8 w1_get_device_family(struct udevice *dev); 29 30 int w1_read_buf(struct udevice *dev, u8 *buf, unsigned int count); 31 int w1_read_byte(struct udevice *dev); 32 int w1_reset_select(struct udevice *dev); 33 int w1_write_buf(struct udevice *dev, u8 *buf, unsigned int count); 34 int w1_write_byte(struct udevice *dev, u8 byte); 35 36 #endif 37