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8#ifndef __W1_H
9#define __W1_H
10
11struct udevice;
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
18struct w1_driver_entry {
19 struct driver *driver;
20 u8 *family;
21};
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29#define U_BOOT_W1_DEVICE(__name, __family) \
30 ll_entry_declare(struct w1_driver_entry, __name, w1_driver_entry) = { \
31 .driver = llsym(struct driver, __name, driver), \
32 .family = __family, \
33 }
34
35struct w1_device {
36 u64 id;
37};
38
39struct w1_ops {
40 u8 (*read_byte)(struct udevice *dev);
41 bool (*reset)(struct udevice *dev);
42 u8 (*triplet)(struct udevice *dev, bool bdir);
43 void (*write_byte)(struct udevice *dev, u8 byte);
44};
45
46int w1_get_bus(int busnum, struct udevice **busp);
47u8 w1_get_device_family(struct udevice *dev);
48
49int w1_read_buf(struct udevice *dev, u8 *buf, unsigned int count);
50int w1_read_byte(struct udevice *dev);
51int w1_reset_select(struct udevice *dev);
52int w1_write_buf(struct udevice *dev, u8 *buf, unsigned int count);
53int w1_write_byte(struct udevice *dev, u8 byte);
54
55#endif
56