1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2014 Google, Inc
10 #include <i2c_eeprom.h>
12 int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size)
14 const struct i2c_eeprom_ops *ops = device_get_ops(dev);
19 return ops->read(dev, offset, buf, size);
22 int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size)
24 const struct i2c_eeprom_ops *ops = device_get_ops(dev);
29 return ops->write(dev, offset, buf, size);
32 static int i2c_eeprom_std_read(struct udevice *dev, int offset, uint8_t *buf,
35 return dm_i2c_read(dev, offset, buf, size);
38 static int i2c_eeprom_std_write(struct udevice *dev, int offset,
39 const uint8_t *buf, int size)
44 static const struct i2c_eeprom_ops i2c_eeprom_std_ops = {
45 .read = i2c_eeprom_std_read,
46 .write = i2c_eeprom_std_write,
49 static int i2c_eeprom_std_ofdata_to_platdata(struct udevice *dev)
51 struct i2c_eeprom *priv = dev_get_priv(dev);
52 u64 data = dev_get_driver_data(dev);
55 if (dev_read_u32(dev, "pagesize", &pagesize) == 0) {
56 priv->pagesize = pagesize;
60 /* 6 bit -> page size of up to 2^63 (should be sufficient) */
61 priv->pagewidth = data & 0x3F;
62 priv->pagesize = (1 << priv->pagewidth);
67 static int i2c_eeprom_std_probe(struct udevice *dev)
72 static const struct udevice_id i2c_eeprom_std_ids[] = {
73 { .compatible = "i2c-eeprom", .data = 0 },
74 { .compatible = "microchip,24aa02e48", .data = 3 },
75 { .compatible = "atmel,24c01a", .data = 3 },
76 { .compatible = "atmel,24c02", .data = 3 },
77 { .compatible = "atmel,24c04", .data = 4 },
78 { .compatible = "atmel,24c08", .data = 4 },
79 { .compatible = "atmel,24c08a", .data = 4 },
80 { .compatible = "atmel,24c16a", .data = 4 },
81 { .compatible = "atmel,24mac402", .data = 4 },
82 { .compatible = "atmel,24c32", .data = 5 },
83 { .compatible = "atmel,24c64", .data = 5 },
84 { .compatible = "atmel,24c128", .data = 6 },
85 { .compatible = "atmel,24c256", .data = 6 },
86 { .compatible = "atmel,24c512", .data = 6 },
90 U_BOOT_DRIVER(i2c_eeprom_std) = {
92 .id = UCLASS_I2C_EEPROM,
93 .of_match = i2c_eeprom_std_ids,
94 .probe = i2c_eeprom_std_probe,
95 .ofdata_to_platdata = i2c_eeprom_std_ofdata_to_platdata,
96 .priv_auto_alloc_size = sizeof(struct i2c_eeprom),
97 .ops = &i2c_eeprom_std_ops,
100 UCLASS_DRIVER(i2c_eeprom) = {
101 .id = UCLASS_I2C_EEPROM,
102 .name = "i2c_eeprom",