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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>
Sachin Kamat3d6d1d12013-10-16 14:26:56 +053020#include <linux/of.h>
Mark Brownc6f75622012-06-19 16:35:49 +010021
22#include <linux/mfd/arizona/core.h>
23
24#include "arizona.h"
25
Bill Pembertonf791be42012-11-19 13:23:04 -050026static int arizona_i2c_probe(struct i2c_client *i2c,
Lee Jones942786e2014-07-02 14:28:46 +010027 const struct i2c_device_id *id)
Mark Brownc6f75622012-06-19 16:35:49 +010028{
29 struct arizona *arizona;
30 const struct regmap_config *regmap_config;
Lee Jones942786e2014-07-02 14:28:46 +010031 unsigned long type;
32 int ret;
Mark Brownc6f75622012-06-19 16:35:49 +010033
Mark Brownd7810092013-03-25 00:11:27 +000034 if (i2c->dev.of_node)
35 type = arizona_of_get_type(&i2c->dev);
36 else
37 type = id->driver_data;
38
39 switch (type) {
Mark Brown863df8d2012-07-05 20:35:31 +010040#ifdef CONFIG_MFD_WM5102
Mark Brownc6f75622012-06-19 16:35:49 +010041 case WM5102:
42 regmap_config = &wm5102_i2c_regmap;
43 break;
Mark Brown863df8d2012-07-05 20:35:31 +010044#endif
Mark Browne102bef2012-07-10 12:37:58 +010045#ifdef CONFIG_MFD_WM5110
46 case WM5110:
Richard Fitzgeralde5d4ef02015-01-17 15:21:22 +000047 case WM8280:
Mark Browne102bef2012-07-10 12:37:58 +010048 regmap_config = &wm5110_i2c_regmap;
49 break;
50#endif
Charles Keepaxdc7d4862013-06-13 09:43:29 +010051#ifdef CONFIG_MFD_WM8997
52 case WM8997:
53 regmap_config = &wm8997_i2c_regmap;
54 break;
55#endif
Richard Fitzgerald6887b042015-07-03 16:16:35 +010056#ifdef CONFIG_MFD_WM8998
57 case WM8998:
58 case WM1814:
59 regmap_config = &wm8998_i2c_regmap;
60 break;
61#endif
Mark Brownc6f75622012-06-19 16:35:49 +010062 default:
63 dev_err(&i2c->dev, "Unknown device type %ld\n",
64 id->driver_data);
65 return -EINVAL;
66 }
67
68 arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
69 if (arizona == NULL)
70 return -ENOMEM;
71
72 arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
73 if (IS_ERR(arizona->regmap)) {
74 ret = PTR_ERR(arizona->regmap);
75 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
76 ret);
77 return ret;
78 }
79
80 arizona->type = id->driver_data;
81 arizona->dev = &i2c->dev;
82 arizona->irq = i2c->irq;
83
84 return arizona_dev_init(arizona);
85}
86
Bill Pemberton4740f732012-11-19 13:26:01 -050087static int arizona_i2c_remove(struct i2c_client *i2c)
Mark Brownc6f75622012-06-19 16:35:49 +010088{
89 struct arizona *arizona = dev_get_drvdata(&i2c->dev);
90 arizona_dev_exit(arizona);
91 return 0;
92}
93
94static const struct i2c_device_id arizona_i2c_id[] = {
95 { "wm5102", WM5102 },
Mark Browne102bef2012-07-10 12:37:58 +010096 { "wm5110", WM5110 },
Richard Fitzgeralde5d4ef02015-01-17 15:21:22 +000097 { "wm8280", WM8280 },
Charles Keepaxdc7d4862013-06-13 09:43:29 +010098 { "wm8997", WM8997 },
Richard Fitzgerald6887b042015-07-03 16:16:35 +010099 { "wm8998", WM8998 },
100 { "wm1814", WM1814 },
Mark Brownc6f75622012-06-19 16:35:49 +0100101 { }
102};
103MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
104
105static struct i2c_driver arizona_i2c_driver = {
106 .driver = {
107 .name = "arizona",
Mark Brownc6f75622012-06-19 16:35:49 +0100108 .pm = &arizona_pm_ops,
Mark Brownd7810092013-03-25 00:11:27 +0000109 .of_match_table = of_match_ptr(arizona_of_match),
Mark Brownc6f75622012-06-19 16:35:49 +0100110 },
111 .probe = arizona_i2c_probe,
Bill Pemberton84449212012-11-19 13:20:24 -0500112 .remove = arizona_i2c_remove,
Mark Brownc6f75622012-06-19 16:35:49 +0100113 .id_table = arizona_i2c_id,
114};
115
116module_i2c_driver(arizona_i2c_driver);
117
118MODULE_DESCRIPTION("Arizona I2C bus interface");
119MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
120MODULE_LICENSE("GPL");