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Commit | Line | Data |
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20142019 SG |
1 | /* |
2 | * Copyright (c) 2014 Google, Inc | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
7 | #include <common.h> | |
ee5ee876 | 8 | #include <linux/err.h> |
20142019 SG |
9 | #include <dm.h> |
10 | #include <i2c.h> | |
11 | #include <i2c_eeprom.h> | |
12 | ||
13 | static int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, | |
14 | int size) | |
15 | { | |
d7e28918 | 16 | return dm_i2c_read(dev, offset, buf, size); |
20142019 SG |
17 | } |
18 | ||
19 | static int i2c_eeprom_write(struct udevice *dev, int offset, | |
20 | const uint8_t *buf, int size) | |
21 | { | |
22 | return -ENODEV; | |
23 | } | |
24 | ||
25 | struct i2c_eeprom_ops i2c_eeprom_std_ops = { | |
26 | .read = i2c_eeprom_read, | |
27 | .write = i2c_eeprom_write, | |
28 | }; | |
29 | ||
d7e28918 | 30 | static int i2c_eeprom_std_ofdata_to_platdata(struct udevice *dev) |
31 | { | |
32 | struct i2c_eeprom *priv = dev_get_priv(dev); | |
33 | u64 data = dev_get_driver_data(dev); | |
34 | ||
35 | /* 6 bit -> page size of up to 2^63 (should be sufficient) */ | |
36 | priv->pagewidth = data & 0x3F; | |
37 | priv->pagesize = (1 << priv->pagewidth); | |
38 | ||
39 | return 0; | |
40 | } | |
41 | ||
20142019 SG |
42 | int i2c_eeprom_std_probe(struct udevice *dev) |
43 | { | |
44 | return 0; | |
45 | } | |
46 | ||
47 | static const struct udevice_id i2c_eeprom_std_ids[] = { | |
d7e28918 | 48 | { .compatible = "i2c-eeprom", .data = 0 }, |
49 | { .compatible = "atmel,24c01a", .data = 3 }, | |
50 | { .compatible = "atmel,24c02", .data = 3 }, | |
51 | { .compatible = "atmel,24c04", .data = 4 }, | |
52 | { .compatible = "atmel,24c08a", .data = 4 }, | |
53 | { .compatible = "atmel,24c16a", .data = 4 }, | |
54 | { .compatible = "atmel,24c32", .data = 5 }, | |
55 | { .compatible = "atmel,24c64", .data = 5 }, | |
56 | { .compatible = "atmel,24c128", .data = 6 }, | |
57 | { .compatible = "atmel,24c256", .data = 6 }, | |
58 | { .compatible = "atmel,24c512", .data = 6 }, | |
20142019 SG |
59 | { } |
60 | }; | |
61 | ||
62 | U_BOOT_DRIVER(i2c_eeprom_std) = { | |
d7e28918 | 63 | .name = "i2c_eeprom", |
64 | .id = UCLASS_I2C_EEPROM, | |
65 | .of_match = i2c_eeprom_std_ids, | |
66 | .probe = i2c_eeprom_std_probe, | |
67 | .ofdata_to_platdata = i2c_eeprom_std_ofdata_to_platdata, | |
68 | .priv_auto_alloc_size = sizeof(struct i2c_eeprom), | |
69 | .ops = &i2c_eeprom_std_ops, | |
20142019 SG |
70 | }; |
71 | ||
72 | UCLASS_DRIVER(i2c_eeprom) = { | |
73 | .id = UCLASS_I2C_EEPROM, | |
74 | .name = "i2c_eeprom", | |
75 | }; |