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 38