Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2896434c AJ |
2 | /* I2C access for DA9055 PMICs. |
3 | * | |
4 | * Copyright(c) 2012 Dialog Semiconductor Ltd. | |
5 | * | |
6 | * Author: David Dajun Chen <dchen@diasemi.com> | |
2896434c AJ |
7 | */ |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/device.h> | |
11 | #include <linux/i2c.h> | |
12 | #include <linux/err.h> | |
d9a33515 | 13 | #include <linux/of.h> |
2896434c AJ |
14 | |
15 | #include <linux/mfd/da9055/core.h> | |
16 | ||
d4297729 | 17 | static int da9055_i2c_probe(struct i2c_client *i2c) |
2896434c AJ |
18 | { |
19 | struct da9055 *da9055; | |
20 | int ret; | |
21 | ||
22 | da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL); | |
23 | if (!da9055) | |
24 | return -ENOMEM; | |
25 | ||
26 | da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config); | |
27 | if (IS_ERR(da9055->regmap)) { | |
28 | ret = PTR_ERR(da9055->regmap); | |
29 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", | |
30 | ret); | |
31 | return ret; | |
32 | } | |
33 | ||
34 | da9055->dev = &i2c->dev; | |
35 | da9055->chip_irq = i2c->irq; | |
36 | ||
37 | i2c_set_clientdata(i2c, da9055); | |
38 | ||
39 | return da9055_device_init(da9055); | |
40 | } | |
41 | ||
ed5c2f5f | 42 | static void da9055_i2c_remove(struct i2c_client *i2c) |
2896434c AJ |
43 | { |
44 | struct da9055 *da9055 = i2c_get_clientdata(i2c); | |
45 | ||
46 | da9055_device_exit(da9055); | |
2896434c AJ |
47 | } |
48 | ||
07b0e5b1 AT |
49 | /* |
50 | * DO NOT change the device Ids. The naming is intentionally specific as both | |
51 | * the PMIC and CODEC parts of this chip are instantiated separately as I2C | |
52 | * devices (both have configurable I2C addresses, and are to all intents and | |
53 | * purposes separate). As a result there are specific DA9055 ids for PMIC | |
54 | * and CODEC, which must be different to operate together. | |
55 | */ | |
6af42e5d | 56 | static const struct i2c_device_id da9055_i2c_id[] = { |
5e9ea43c | 57 | { "da9055-pmic" }, |
2896434c AJ |
58 | { } |
59 | }; | |
07b0e5b1 | 60 | MODULE_DEVICE_TABLE(i2c, da9055_i2c_id); |
2896434c | 61 | |
d9a33515 AT |
62 | static const struct of_device_id da9055_of_match[] = { |
63 | { .compatible = "dlg,da9055-pmic", }, | |
64 | { } | |
65 | }; | |
66 | ||
2896434c | 67 | static struct i2c_driver da9055_i2c_driver = { |
9816d859 | 68 | .probe = da9055_i2c_probe, |
84449216 | 69 | .remove = da9055_i2c_remove, |
2896434c AJ |
70 | .id_table = da9055_i2c_id, |
71 | .driver = { | |
07b0e5b1 | 72 | .name = "da9055-pmic", |
62e74073 | 73 | .of_match_table = da9055_of_match, |
2896434c AJ |
74 | }, |
75 | }; | |
76 | ||
77 | static int __init da9055_i2c_init(void) | |
78 | { | |
79 | int ret; | |
80 | ||
81 | ret = i2c_add_driver(&da9055_i2c_driver); | |
82 | if (ret != 0) { | |
83 | pr_err("DA9055 I2C registration failed %d\n", ret); | |
84 | return ret; | |
85 | } | |
86 | ||
87 | return 0; | |
88 | } | |
89 | subsys_initcall(da9055_i2c_init); | |
90 | ||
91 | static void __exit da9055_i2c_exit(void) | |
92 | { | |
93 | i2c_del_driver(&da9055_i2c_driver); | |
94 | } | |
95 | module_exit(da9055_i2c_exit); | |
96 | ||
97 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); | |
98 | MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC"); |