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_DS2502 0x09 16 #define W1_FAMILY_EEP_SANDBOX 0xfe 17 18 struct w1_device { 19 u64 id; 20 }; 21 22 struct w1_ops { 23 u8 (*read_byte)(struct udevice *dev); 24 bool (*reset)(struct udevice *dev); 25 u8 (*triplet)(struct udevice *dev, bool bdir); 26 void (*write_byte)(struct udevice *dev, u8 byte); 27 }; 28 29 int w1_get_bus(int busnum, struct udevice **busp); 30 u8 w1_get_device_family(struct udevice *dev); 31 32 int w1_read_buf(struct udevice *dev, u8 *buf, unsigned int count); 33 int w1_read_byte(struct udevice *dev); 34 int w1_reset_select(struct udevice *dev); 35 int w1_write_buf(struct udevice *dev, u8 *buf, unsigned int count); 36 int w1_write_byte(struct udevice *dev, u8 byte); 37 38 #endif 39