1d3e19cf9SMaxime Ripard /* SPDX-License-Identifier: GPL-2.0+ 2d3e19cf9SMaxime Ripard * 3d3e19cf9SMaxime Ripard * Copyright (c) 2015 Free Electrons 4d3e19cf9SMaxime Ripard * Copyright (c) 2015 NextThing Co 5d3e19cf9SMaxime Ripard * 6d3e19cf9SMaxime Ripard */ 7d3e19cf9SMaxime Ripard 8d3e19cf9SMaxime Ripard #ifndef __W1_H 9d3e19cf9SMaxime Ripard #define __W1_H 10d3e19cf9SMaxime Ripard 11d3e19cf9SMaxime Ripard #include <dm.h> 12d3e19cf9SMaxime Ripard 13d3e19cf9SMaxime Ripard #define W1_FAMILY_DS24B33 0x23 14d3e19cf9SMaxime Ripard #define W1_FAMILY_DS2431 0x2d 15*f9c87adcSMartin Fuzzey #define W1_FAMILY_DS2502 0x09 1684e55bddSEugen Hristev #define W1_FAMILY_EEP_SANDBOX 0xfe 17d3e19cf9SMaxime Ripard 18d3e19cf9SMaxime Ripard struct w1_device { 19d3e19cf9SMaxime Ripard u64 id; 20d3e19cf9SMaxime Ripard }; 21d3e19cf9SMaxime Ripard 22d3e19cf9SMaxime Ripard struct w1_ops { 23d3e19cf9SMaxime Ripard u8 (*read_byte)(struct udevice *dev); 24d3e19cf9SMaxime Ripard bool (*reset)(struct udevice *dev); 25d3e19cf9SMaxime Ripard u8 (*triplet)(struct udevice *dev, bool bdir); 26d3e19cf9SMaxime Ripard void (*write_byte)(struct udevice *dev, u8 byte); 27d3e19cf9SMaxime Ripard }; 28d3e19cf9SMaxime Ripard 29d3e19cf9SMaxime Ripard int w1_get_bus(int busnum, struct udevice **busp); 30d3e19cf9SMaxime Ripard u8 w1_get_device_family(struct udevice *dev); 31d3e19cf9SMaxime Ripard 32d3e19cf9SMaxime Ripard int w1_read_buf(struct udevice *dev, u8 *buf, unsigned int count); 33d3e19cf9SMaxime Ripard int w1_read_byte(struct udevice *dev); 34d3e19cf9SMaxime Ripard int w1_reset_select(struct udevice *dev); 35d3e19cf9SMaxime Ripard int w1_write_buf(struct udevice *dev, u8 *buf, unsigned int count); 36d3e19cf9SMaxime Ripard int w1_write_byte(struct udevice *dev, u8 byte); 37d3e19cf9SMaxime Ripard 38d3e19cf9SMaxime Ripard #endif 39