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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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* Copyright (c) 2018 Microchip Technology, Inc.
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*
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*/
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#include <common.h>
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#include <linux/err.h>
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#include <dm.h>
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#include <w1-eeprom.h>
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#include <w1.h>
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#define W1_F2D_READ_EEPROM 0xf0
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static int ds24xxx_read_buf(struct udevice *dev, unsigned int offset,
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u8 *buf, unsigned int count)
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{
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w1_reset_select(dev);
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w1_write_byte(dev, W1_F2D_READ_EEPROM);
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w1_write_byte(dev, offset & 0xff);
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w1_write_byte(dev, offset >> 8);
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return w1_read_buf(dev, buf, count);
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}
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static int ds24xxx_probe(struct udevice *dev)
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{
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struct w1_device *w1;
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w1 = dev_get_parent_plat(dev);
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w1->id = 0;
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return 0;
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}
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static const struct w1_eeprom_ops ds24xxx_ops = {
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.read_buf = ds24xxx_read_buf,
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};
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static const struct udevice_id ds24xxx_id[] = {
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{ .compatible = "maxim,ds24b33", .data = W1_FAMILY_DS24B33 },
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{ .compatible = "maxim,ds2431", .data = W1_FAMILY_DS2431 },
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{ },
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};
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U_BOOT_DRIVER(ds24xxx) = {
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.name = "ds24xxx",
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.id = UCLASS_W1_EEPROM,
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.of_match = ds24xxx_id,
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.ops = &ds24xxx_ops,
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.probe = ds24xxx_probe,
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};
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u8 family_supported[] = {
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W1_FAMILY_DS24B33,
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W1_FAMILY_DS2431,
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};
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U_BOOT_W1_DEVICE(ds24xxx, family_supported);
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