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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 AT |
13 | #include <linux/of.h> |
14 | #include <linux/of_device.h> | |
2896434c AJ |
15 | |
16 | #include <linux/mfd/da9055/core.h> | |
17 | ||
f791be49 | 18 | static int da9055_i2c_probe(struct i2c_client *i2c, |
2896434c AJ |
19 | const struct i2c_device_id *id) |
20 | { | |
21 | struct da9055 *da9055; | |
22 | int ret; | |
23 | ||
24 | da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL); | |
25 | if (!da9055) | |
26 | return -ENOMEM; | |
27 | ||
28 | da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config); | |
29 | if (IS_ERR(da9055->regmap)) { | |
30 | ret = PTR_ERR(da9055->regmap); | |
31 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", | |
32 | ret); | |
33 | return ret; | |
34 | } | |
35 | ||
36 | da9055->dev = &i2c->dev; | |
37 | da9055->chip_irq = i2c->irq; | |
38 | ||
39 | i2c_set_clientdata(i2c, da9055); | |
40 | ||
41 | return da9055_device_init(da9055); | |
42 | } | |
43 | ||
4740f73f | 44 | static int da9055_i2c_remove(struct i2c_client *i2c) |
2896434c AJ |
45 | { |
46 | struct da9055 *da9055 = i2c_get_clientdata(i2c); | |
47 | ||
48 | da9055_device_exit(da9055); | |
49 | ||
50 | return 0; | |
51 | } | |
52 | ||
07b0e5b1 AT |
53 | /* |
54 | * DO NOT change the device Ids. The naming is intentionally specific as both | |
55 | * the PMIC and CODEC parts of this chip are instantiated separately as I2C | |
56 | * devices (both have configurable I2C addresses, and are to all intents and | |
57 | * purposes separate). As a result there are specific DA9055 ids for PMIC | |
58 | * and CODEC, which must be different to operate together. | |
59 | */ | |
6af42e5d | 60 | static const struct i2c_device_id da9055_i2c_id[] = { |
07b0e5b1 | 61 | {"da9055-pmic", 0}, |
2896434c AJ |
62 | { } |
63 | }; | |
07b0e5b1 | 64 | MODULE_DEVICE_TABLE(i2c, da9055_i2c_id); |
2896434c | 65 | |
d9a33515 AT |
66 | static const struct of_device_id da9055_of_match[] = { |
67 | { .compatible = "dlg,da9055-pmic", }, | |
68 | { } | |
69 | }; | |
70 | ||
2896434c AJ |
71 | static struct i2c_driver da9055_i2c_driver = { |
72 | .probe = da9055_i2c_probe, | |
84449216 | 73 | .remove = da9055_i2c_remove, |
2896434c AJ |
74 | .id_table = da9055_i2c_id, |
75 | .driver = { | |
07b0e5b1 | 76 | .name = "da9055-pmic", |
d9a33515 | 77 | .of_match_table = of_match_ptr(da9055_of_match), |
2896434c AJ |
78 | }, |
79 | }; | |
80 | ||
81 | static int __init da9055_i2c_init(void) | |
82 | { | |
83 | int ret; | |
84 | ||
85 | ret = i2c_add_driver(&da9055_i2c_driver); | |
86 | if (ret != 0) { | |
87 | pr_err("DA9055 I2C registration failed %d\n", ret); | |
88 | return ret; | |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | subsys_initcall(da9055_i2c_init); | |
94 | ||
95 | static void __exit da9055_i2c_exit(void) | |
96 | { | |
97 | i2c_del_driver(&da9055_i2c_driver); | |
98 | } | |
99 | module_exit(da9055_i2c_exit); | |
100 | ||
101 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); | |
102 | MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC"); | |
103 | MODULE_LICENSE("GPL"); |