blob: 44a1bb96984185e3757f31330a37d50266fdbbed [file] [log] [blame]
Mark Brownc6f75622012-06-19 16:35:49 +01001/*
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
Bill Pembertonf791be42012-11-19 13:23:04 -050025static int arizona_i2c_probe(struct i2c_client *i2c,
Mark Brownc6f75622012-06-19 16:35:49 +010026 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) {
Mark Brown863df8d2012-07-05 20:35:31 +010033#ifdef CONFIG_MFD_WM5102
Mark Brownc6f75622012-06-19 16:35:49 +010034 case WM5102:
35 regmap_config = &wm5102_i2c_regmap;
36 break;
Mark Brown863df8d2012-07-05 20:35:31 +010037#endif
Mark Browne102bef2012-07-10 12:37:58 +010038#ifdef CONFIG_MFD_WM5110
39 case WM5110:
40 regmap_config = &wm5110_i2c_regmap;
41 break;
42#endif
Mark Brownc6f75622012-06-19 16:35:49 +010043 default:
44 dev_err(&i2c->dev, "Unknown device type %ld\n",
45 id->driver_data);
46 return -EINVAL;
47 }
48
49 arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
50 if (arizona == NULL)
51 return -ENOMEM;
52
53 arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
54 if (IS_ERR(arizona->regmap)) {
55 ret = PTR_ERR(arizona->regmap);
56 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
57 ret);
58 return ret;
59 }
60
61 arizona->type = id->driver_data;
62 arizona->dev = &i2c->dev;
63 arizona->irq = i2c->irq;
64
65 return arizona_dev_init(arizona);
66}
67
Bill Pemberton4740f732012-11-19 13:26:01 -050068static int arizona_i2c_remove(struct i2c_client *i2c)
Mark Brownc6f75622012-06-19 16:35:49 +010069{
70 struct arizona *arizona = dev_get_drvdata(&i2c->dev);
71 arizona_dev_exit(arizona);
72 return 0;
73}
74
75static const struct i2c_device_id arizona_i2c_id[] = {
76 { "wm5102", WM5102 },
Mark Browne102bef2012-07-10 12:37:58 +010077 { "wm5110", WM5110 },
Mark Brownc6f75622012-06-19 16:35:49 +010078 { }
79};
80MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
81
82static struct i2c_driver arizona_i2c_driver = {
83 .driver = {
84 .name = "arizona",
85 .owner = THIS_MODULE,
86 .pm = &arizona_pm_ops,
87 },
88 .probe = arizona_i2c_probe,
Bill Pemberton84449212012-11-19 13:20:24 -050089 .remove = arizona_i2c_remove,
Mark Brownc6f75622012-06-19 16:35:49 +010090 .id_table = arizona_i2c_id,
91};
92
93module_i2c_driver(arizona_i2c_driver);
94
95MODULE_DESCRIPTION("Arizona I2C bus interface");
96MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
97MODULE_LICENSE("GPL");