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- /* SPDX-License-Identifier: GPL-2.0+
- *
- * Copyright (c) 2015 Free Electrons
- * Copyright (c) 2015 NextThing Co
- *
- */
- #ifndef __W1_H
- #define __W1_H
- struct udevice;
- #define W1_FAMILY_DS24B33 0x23
- #define W1_FAMILY_DS2431 0x2d
- #define W1_FAMILY_DS2502 0x09
- #define W1_FAMILY_EEP_SANDBOX 0xfe
- struct w1_driver_entry {
- struct driver *driver;
- u8 *family;
- };
- /* U_BOOT_W1_DEVICE() tells U-Boot to create a one-wire device.
- *
- * @__name: Device name (C identifier, not a string. E.g. gpio7_at_ff7e0000)
- * @__driver: Driver name (C identifier, not a string. E.g. gpio7_at_ff7e0000)
- * @__family: Family code number of the one-wire
- */
- #define U_BOOT_W1_DEVICE(__name, __family) \
- ll_entry_declare(struct w1_driver_entry, __name, w1_driver_entry) = { \
- .driver = llsym(struct driver, __name, driver), \
- .family = __family, \
- }
- struct w1_device {
- u64 id;
- };
- struct w1_ops {
- u8 (*read_byte)(struct udevice *dev);
- bool (*reset)(struct udevice *dev);
- u8 (*triplet)(struct udevice *dev, bool bdir);
- void (*write_byte)(struct udevice *dev, u8 byte);
- };
- int w1_get_bus(int busnum, struct udevice **busp);
- u8 w1_get_device_family(struct udevice *dev);
- int w1_read_buf(struct udevice *dev, u8 *buf, unsigned int count);
- int w1_read_byte(struct udevice *dev);
- int w1_reset_select(struct udevice *dev);
- int w1_write_buf(struct udevice *dev, u8 *buf, unsigned int count);
- int w1_write_byte(struct udevice *dev, u8 byte);
- #endif
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