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1 | /* |
2 | * Arizona-i2c.c -- Arizona I2C bus interface | |
3 | * | |
4 | * Copyright 2012 Wolfson Microelectronics plc | |
5 | * | |
6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/err.h> | |
14 | #include <linux/i2c.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/pm_runtime.h> | |
17 | #include <linux/regmap.h> | |
18 | #include <linux/regulator/consumer.h> | |
19 | #include <linux/slab.h> | |
20 | ||
21 | #include <linux/mfd/arizona/core.h> | |
22 | ||
23 | #include "arizona.h" | |
24 | ||
25 | static __devinit int arizona_i2c_probe(struct i2c_client *i2c, | |
26 | const struct i2c_device_id *id) | |
27 | { | |
28 | struct arizona *arizona; | |
29 | const struct regmap_config *regmap_config; | |
30 | int ret; | |
31 | ||
32 | switch (id->driver_data) { | |
33 | case WM5102: | |
34 | regmap_config = &wm5102_i2c_regmap; | |
35 | break; | |
36 | default: | |
37 | dev_err(&i2c->dev, "Unknown device type %ld\n", | |
38 | id->driver_data); | |
39 | return -EINVAL; | |
40 | } | |
41 | ||
42 | arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL); | |
43 | if (arizona == NULL) | |
44 | return -ENOMEM; | |
45 | ||
46 | arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config); | |
47 | if (IS_ERR(arizona->regmap)) { | |
48 | ret = PTR_ERR(arizona->regmap); | |
49 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", | |
50 | ret); | |
51 | return ret; | |
52 | } | |
53 | ||
54 | arizona->type = id->driver_data; | |
55 | arizona->dev = &i2c->dev; | |
56 | arizona->irq = i2c->irq; | |
57 | ||
58 | return arizona_dev_init(arizona); | |
59 | } | |
60 | ||
61 | static int __devexit arizona_i2c_remove(struct i2c_client *i2c) | |
62 | { | |
63 | struct arizona *arizona = dev_get_drvdata(&i2c->dev); | |
64 | arizona_dev_exit(arizona); | |
65 | return 0; | |
66 | } | |
67 | ||
68 | static const struct i2c_device_id arizona_i2c_id[] = { | |
69 | { "wm5102", WM5102 }, | |
70 | { } | |
71 | }; | |
72 | MODULE_DEVICE_TABLE(i2c, arizona_i2c_id); | |
73 | ||
74 | static struct i2c_driver arizona_i2c_driver = { | |
75 | .driver = { | |
76 | .name = "arizona", | |
77 | .owner = THIS_MODULE, | |
78 | .pm = &arizona_pm_ops, | |
79 | }, | |
80 | .probe = arizona_i2c_probe, | |
81 | .remove = __devexit_p(arizona_i2c_remove), | |
82 | .id_table = arizona_i2c_id, | |
83 | }; | |
84 | ||
85 | module_i2c_driver(arizona_i2c_driver); | |
86 | ||
87 | MODULE_DESCRIPTION("Arizona I2C bus interface"); | |
88 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
89 | MODULE_LICENSE("GPL"); |