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c6f75622 MB |
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> |
c6f75622 MB |
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) |
c6f75622 MB |
28 | { |
29 | struct arizona *arizona; | |
b61c1ec0 | 30 | const struct regmap_config *regmap_config = NULL; |
942786e6 LJ |
31 | unsigned long type; |
32 | int ret; | |
c6f75622 | 33 | |
d781009c MB |
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) { | |
c6f75622 | 40 | case WM5102: |
b61c1ec0 RF |
41 | if (IS_ENABLED(CONFIG_MFD_WM5102)) |
42 | regmap_config = &wm5102_i2c_regmap; | |
c6f75622 | 43 | break; |
e102befe | 44 | case WM5110: |
e5d4ef0d | 45 | case WM8280: |
b61c1ec0 RF |
46 | if (IS_ENABLED(CONFIG_MFD_WM5110)) |
47 | regmap_config = &wm5110_i2c_regmap; | |
e102befe | 48 | break; |
dc7d4863 | 49 | case WM8997: |
b61c1ec0 RF |
50 | if (IS_ENABLED(CONFIG_MFD_WM8997)) |
51 | regmap_config = &wm8997_i2c_regmap; | |
dc7d4863 | 52 | break; |
6887b042 RF |
53 | case WM8998: |
54 | case WM1814: | |
b61c1ec0 RF |
55 | if (IS_ENABLED(CONFIG_MFD_WM8998)) |
56 | regmap_config = &wm8998_i2c_regmap; | |
6887b042 | 57 | break; |
c6f75622 | 58 | default: |
2e44e28a | 59 | dev_err(&i2c->dev, "Unknown device type %ld\n", type); |
c6f75622 MB |
60 | return -EINVAL; |
61 | } | |
62 | ||
b61c1ec0 RF |
63 | if (!regmap_config) { |
64 | dev_err(&i2c->dev, | |
65 | "No kernel support for device type %ld\n", type); | |
66 | return -EINVAL; | |
67 | } | |
68 | ||
c6f75622 MB |
69 | arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL); |
70 | if (arizona == NULL) | |
71 | return -ENOMEM; | |
72 | ||
73 | arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config); | |
74 | if (IS_ERR(arizona->regmap)) { | |
75 | ret = PTR_ERR(arizona->regmap); | |
76 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", | |
77 | ret); | |
78 | return ret; | |
79 | } | |
80 | ||
2e44e28a | 81 | arizona->type = type; |
c6f75622 MB |
82 | arizona->dev = &i2c->dev; |
83 | arizona->irq = i2c->irq; | |
84 | ||
85 | return arizona_dev_init(arizona); | |
86 | } | |
87 | ||
4740f73f | 88 | static int arizona_i2c_remove(struct i2c_client *i2c) |
c6f75622 MB |
89 | { |
90 | struct arizona *arizona = dev_get_drvdata(&i2c->dev); | |
91 | arizona_dev_exit(arizona); | |
92 | return 0; | |
93 | } | |
94 | ||
95 | static const struct i2c_device_id arizona_i2c_id[] = { | |
96 | { "wm5102", WM5102 }, | |
e102befe | 97 | { "wm5110", WM5110 }, |
e5d4ef0d | 98 | { "wm8280", WM8280 }, |
dc7d4863 | 99 | { "wm8997", WM8997 }, |
6887b042 RF |
100 | { "wm8998", WM8998 }, |
101 | { "wm1814", WM1814 }, | |
c6f75622 MB |
102 | { } |
103 | }; | |
104 | MODULE_DEVICE_TABLE(i2c, arizona_i2c_id); | |
105 | ||
106 | static struct i2c_driver arizona_i2c_driver = { | |
107 | .driver = { | |
108 | .name = "arizona", | |
c6f75622 | 109 | .pm = &arizona_pm_ops, |
d781009c | 110 | .of_match_table = of_match_ptr(arizona_of_match), |
c6f75622 MB |
111 | }, |
112 | .probe = arizona_i2c_probe, | |
84449216 | 113 | .remove = arizona_i2c_remove, |
c6f75622 MB |
114 | .id_table = arizona_i2c_id, |
115 | }; | |
116 | ||
117 | module_i2c_driver(arizona_i2c_driver); | |
118 | ||
119 | MODULE_DESCRIPTION("Arizona I2C bus interface"); | |
120 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
121 | MODULE_LICENSE("GPL"); |