mirror of
https://github.com/AsahiLinux/u-boot
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84e55bdd8b
Add a sandbox driver for a one wire EEPROM memory Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
37 lines
863 B
C
37 lines
863 B
C
/* SPDX-License-Identifier: GPL-2.0+
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*
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* Copyright (c) 2015 Free Electrons
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* Copyright (c) 2015 NextThing Co
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*
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*/
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#ifndef __W1_H
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#define __W1_H
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#include <dm.h>
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#define W1_FAMILY_DS24B33 0x23
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#define W1_FAMILY_DS2431 0x2d
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#define W1_FAMILY_EEP_SANDBOX 0xfe
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struct w1_device {
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u64 id;
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};
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struct w1_ops {
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u8 (*read_byte)(struct udevice *dev);
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bool (*reset)(struct udevice *dev);
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u8 (*triplet)(struct udevice *dev, bool bdir);
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void (*write_byte)(struct udevice *dev, u8 byte);
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};
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int w1_get_bus(int busnum, struct udevice **busp);
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u8 w1_get_device_family(struct udevice *dev);
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int w1_read_buf(struct udevice *dev, u8 *buf, unsigned int count);
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int w1_read_byte(struct udevice *dev);
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int w1_reset_select(struct udevice *dev);
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int w1_write_buf(struct udevice *dev, u8 *buf, unsigned int count);
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int w1_write_byte(struct udevice *dev, u8 byte);
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#endif
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