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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> | |
3d6d1d1c | 20 | #include <linux/of.h> |
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21 | |
22 | #include <linux/mfd/arizona/core.h> | |
23 | ||
24 | #include "arizona.h" | |
25 | ||
f791be49 | 26 | static int arizona_i2c_probe(struct i2c_client *i2c, |
942786e6 | 27 | const struct i2c_device_id *id) |
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28 | { |
29 | struct arizona *arizona; | |
30 | const struct regmap_config *regmap_config; | |
942786e6 LJ |
31 | unsigned long type; |
32 | int ret; | |
c6f75622 | 33 | |
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34 | if (i2c->dev.of_node) |
35 | type = arizona_of_get_type(&i2c->dev); | |
36 | else | |
37 | type = id->driver_data; | |
38 | ||
39 | switch (type) { | |
863df8d5 | 40 | #ifdef CONFIG_MFD_WM5102 |
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41 | case WM5102: |
42 | regmap_config = &wm5102_i2c_regmap; | |
43 | break; | |
e102befe MB |
44 | #endif |
45 | #ifdef CONFIG_MFD_WM5110 | |
46 | case WM5110: | |
47 | regmap_config = &wm5110_i2c_regmap; | |
48 | break; | |
dc7d4863 CK |
49 | #endif |
50 | #ifdef CONFIG_MFD_WM8997 | |
51 | case WM8997: | |
52 | regmap_config = &wm8997_i2c_regmap; | |
53 | break; | |
863df8d5 | 54 | #endif |
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55 | default: |
56 | dev_err(&i2c->dev, "Unknown device type %ld\n", | |
57 | id->driver_data); | |
58 | return -EINVAL; | |
59 | } | |
60 | ||
61 | arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL); | |
62 | if (arizona == NULL) | |
63 | return -ENOMEM; | |
64 | ||
65 | arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config); | |
66 | if (IS_ERR(arizona->regmap)) { | |
67 | ret = PTR_ERR(arizona->regmap); | |
68 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", | |
69 | ret); | |
70 | return ret; | |
71 | } | |
72 | ||
73 | arizona->type = id->driver_data; | |
74 | arizona->dev = &i2c->dev; | |
75 | arizona->irq = i2c->irq; | |
76 | ||
77 | return arizona_dev_init(arizona); | |
78 | } | |
79 | ||
4740f73f | 80 | static int arizona_i2c_remove(struct i2c_client *i2c) |
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81 | { |
82 | struct arizona *arizona = dev_get_drvdata(&i2c->dev); | |
83 | arizona_dev_exit(arizona); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | static const struct i2c_device_id arizona_i2c_id[] = { | |
88 | { "wm5102", WM5102 }, | |
e102befe | 89 | { "wm5110", WM5110 }, |
dc7d4863 | 90 | { "wm8997", WM8997 }, |
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91 | { } |
92 | }; | |
93 | MODULE_DEVICE_TABLE(i2c, arizona_i2c_id); | |
94 | ||
95 | static struct i2c_driver arizona_i2c_driver = { | |
96 | .driver = { | |
97 | .name = "arizona", | |
98 | .owner = THIS_MODULE, | |
99 | .pm = &arizona_pm_ops, | |
d781009c | 100 | .of_match_table = of_match_ptr(arizona_of_match), |
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101 | }, |
102 | .probe = arizona_i2c_probe, | |
84449216 | 103 | .remove = arizona_i2c_remove, |
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104 | .id_table = arizona_i2c_id, |
105 | }; | |
106 | ||
107 | module_i2c_driver(arizona_i2c_driver); | |
108 | ||
109 | MODULE_DESCRIPTION("Arizona I2C bus interface"); | |
110 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
111 | MODULE_LICENSE("GPL"); |