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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 commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
89 lines
1.6 KiB
C
89 lines
1.6 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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* Maxime Ripard <maxime.ripard@free-electrons.com>
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* Eugen Hristev <eugen.hristev@microchip.com>
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*
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*/
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#define LOG_CATEGORY UCLASS_W1_EEPROM
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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <w1.h>
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#include <w1-eeprom.h>
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#include <dm/device-internal.h>
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int w1_eeprom_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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const struct w1_eeprom_ops *ops = device_get_ops(dev);
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u64 id = 0;
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int ret;
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if (!ops->read_buf)
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return -ENOSYS;
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ret = w1_eeprom_get_id(dev, &id);
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if (ret)
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return ret;
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if (!id)
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return -ENODEV;
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return ops->read_buf(dev, offset, buf, count);
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}
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int w1_eeprom_get_id(struct udevice *dev, u64 *id)
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{
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struct w1_device *w1 = dev_get_parent_plat(dev);
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if (!w1)
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return -ENODEV;
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*id = w1->id;
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return 0;
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}
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UCLASS_DRIVER(w1_eeprom) = {
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.name = "w1_eeprom",
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.id = UCLASS_W1_EEPROM,
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.flags = DM_UC_FLAG_SEQ_ALIAS,
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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.post_bind = dm_scan_fdt_dev,
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#endif
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};
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int w1_eeprom_dm_init(void)
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{
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struct udevice *dev;
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struct uclass *uc;
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int ret;
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ret = uclass_get(UCLASS_W1_EEPROM, &uc);
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if (ret) {
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debug("W1_EEPROM uclass not available\n");
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return ret;
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}
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uclass_foreach_dev(dev, uc) {
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ret = device_probe(dev);
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if (ret == -ENODEV) { /* No such device. */
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debug("W1_EEPROM not available.\n");
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continue;
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}
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if (ret) { /* Other error. */
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printf("W1_EEPROM probe failed, error %d\n", ret);
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continue;
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}
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}
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return 0;
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}
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