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https://github.com/u-boot/u-boot.git
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2014 Google, Inc
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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 <i2c.h>
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#include <i2c_eeprom.h>
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int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size)
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{
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const struct i2c_eeprom_ops *ops = device_get_ops(dev);
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if (!ops->read)
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return -ENOSYS;
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return ops->read(dev, offset, buf, size);
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}
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int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size)
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{
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const struct i2c_eeprom_ops *ops = device_get_ops(dev);
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if (!ops->write)
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return -ENOSYS;
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return ops->write(dev, offset, buf, size);
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}
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static int i2c_eeprom_std_read(struct udevice *dev, int offset, uint8_t *buf,
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int size)
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{
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return dm_i2c_read(dev, offset, buf, size);
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}
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static int i2c_eeprom_std_write(struct udevice *dev, int offset,
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const uint8_t *buf, int size)
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{
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return -ENODEV;
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}
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static const struct i2c_eeprom_ops i2c_eeprom_std_ops = {
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.read = i2c_eeprom_std_read,
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.write = i2c_eeprom_std_write,
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};
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static int i2c_eeprom_std_ofdata_to_platdata(struct udevice *dev)
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{
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struct i2c_eeprom *priv = dev_get_priv(dev);
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u64 data = dev_get_driver_data(dev);
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/* 6 bit -> page size of up to 2^63 (should be sufficient) */
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priv->pagewidth = data & 0x3F;
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priv->pagesize = (1 << priv->pagewidth);
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return 0;
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}
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static int i2c_eeprom_std_probe(struct udevice *dev)
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{
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return 0;
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}
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static const struct udevice_id i2c_eeprom_std_ids[] = {
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{ .compatible = "i2c-eeprom", .data = 0 },
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{ .compatible = "microchip,24aa02e48", .data = 3 },
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{ .compatible = "atmel,24c01a", .data = 3 },
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{ .compatible = "atmel,24c02", .data = 3 },
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{ .compatible = "atmel,24c04", .data = 4 },
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{ .compatible = "atmel,24c08a", .data = 4 },
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{ .compatible = "atmel,24c16a", .data = 4 },
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{ .compatible = "atmel,24mac402", .data = 4 },
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{ .compatible = "atmel,24c32", .data = 5 },
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{ .compatible = "atmel,24c64", .data = 5 },
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{ .compatible = "atmel,24c128", .data = 6 },
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{ .compatible = "atmel,24c256", .data = 6 },
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{ .compatible = "atmel,24c512", .data = 6 },
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{ }
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};
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U_BOOT_DRIVER(i2c_eeprom_std) = {
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.name = "i2c_eeprom",
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.id = UCLASS_I2C_EEPROM,
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.of_match = i2c_eeprom_std_ids,
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.probe = i2c_eeprom_std_probe,
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.ofdata_to_platdata = i2c_eeprom_std_ofdata_to_platdata,
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.priv_auto_alloc_size = sizeof(struct i2c_eeprom),
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.ops = &i2c_eeprom_std_ops,
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};
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UCLASS_DRIVER(i2c_eeprom) = {
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.id = UCLASS_I2C_EEPROM,
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.name = "i2c_eeprom",
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};
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