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df3df646 MR |
1 | /* |
2 | * Copyright 2009-2010 Creative Product Design | |
3 | * Marc Reilly marc@cpdesign.com.au | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it under | |
6 | * the terms of the GNU General Public License version 2 as published by the | |
7 | * Free Software Foundation. | |
8 | */ | |
9 | ||
10 | #include <linux/slab.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/platform_device.h> | |
df3df646 MR |
13 | #include <linux/mfd/core.h> |
14 | #include <linux/mfd/mc13xxx.h> | |
15 | #include <linux/of.h> | |
16 | #include <linux/of_device.h> | |
17 | #include <linux/of_gpio.h> | |
18 | #include <linux/i2c.h> | |
19 | #include <linux/err.h> | |
20 | ||
21 | #include "mc13xxx.h" | |
22 | ||
23 | static const struct i2c_device_id mc13xxx_i2c_device_id[] = { | |
24 | { | |
25 | .name = "mc13892", | |
cd0f34b0 | 26 | .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892, |
0312e024 UKK |
27 | }, { |
28 | .name = "mc34708", | |
29 | .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708, | |
df3df646 MR |
30 | }, { |
31 | /* sentinel */ | |
32 | } | |
33 | }; | |
34 | MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id); | |
35 | ||
36 | static const struct of_device_id mc13xxx_dt_ids[] = { | |
37 | { | |
38 | .compatible = "fsl,mc13892", | |
cd0f34b0 | 39 | .data = &mc13xxx_variant_mc13892, |
0312e024 UKK |
40 | }, { |
41 | .compatible = "fsl,mc34708", | |
42 | .data = &mc13xxx_variant_mc34708, | |
df3df646 MR |
43 | }, { |
44 | /* sentinel */ | |
45 | } | |
46 | }; | |
47 | MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids); | |
48 | ||
18dd21ab | 49 | static const struct regmap_config mc13xxx_regmap_i2c_config = { |
df3df646 MR |
50 | .reg_bits = 8, |
51 | .val_bits = 24, | |
52 | ||
53 | .max_register = MC13XXX_NUMREGS, | |
54 | ||
55 | .cache_type = REGCACHE_NONE, | |
56 | }; | |
57 | ||
58 | static int mc13xxx_i2c_probe(struct i2c_client *client, | |
59 | const struct i2c_device_id *id) | |
60 | { | |
df3df646 | 61 | struct mc13xxx *mc13xxx; |
df3df646 MR |
62 | int ret; |
63 | ||
e7c706b1 | 64 | mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL); |
df3df646 MR |
65 | if (!mc13xxx) |
66 | return -ENOMEM; | |
67 | ||
68 | dev_set_drvdata(&client->dev, mc13xxx); | |
69 | ||
db9ef449 | 70 | mc13xxx->irq = client->irq; |
df3df646 | 71 | |
e7c706b1 AL |
72 | mc13xxx->regmap = devm_regmap_init_i2c(client, |
73 | &mc13xxx_regmap_i2c_config); | |
df3df646 MR |
74 | if (IS_ERR(mc13xxx->regmap)) { |
75 | ret = PTR_ERR(mc13xxx->regmap); | |
db9ef449 | 76 | dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret); |
df3df646 MR |
77 | return ret; |
78 | } | |
79 | ||
cd0f34b0 UKK |
80 | if (client->dev.of_node) { |
81 | const struct of_device_id *of_id = | |
82 | of_match_device(mc13xxx_dt_ids, &client->dev); | |
83 | mc13xxx->variant = of_id->data; | |
84 | } else { | |
85 | mc13xxx->variant = (void *)id->driver_data; | |
86 | } | |
df3df646 | 87 | |
db9ef449 | 88 | return mc13xxx_common_init(&client->dev); |
df3df646 MR |
89 | } |
90 | ||
4740f73f | 91 | static int mc13xxx_i2c_remove(struct i2c_client *client) |
df3df646 | 92 | { |
db9ef449 | 93 | return mc13xxx_common_exit(&client->dev); |
df3df646 MR |
94 | } |
95 | ||
96 | static struct i2c_driver mc13xxx_i2c_driver = { | |
97 | .id_table = mc13xxx_i2c_device_id, | |
98 | .driver = { | |
99 | .owner = THIS_MODULE, | |
100 | .name = "mc13xxx", | |
101 | .of_match_table = mc13xxx_dt_ids, | |
102 | }, | |
103 | .probe = mc13xxx_i2c_probe, | |
84449216 | 104 | .remove = mc13xxx_i2c_remove, |
df3df646 MR |
105 | }; |
106 | ||
107 | static int __init mc13xxx_i2c_init(void) | |
108 | { | |
109 | return i2c_add_driver(&mc13xxx_i2c_driver); | |
110 | } | |
111 | subsys_initcall(mc13xxx_i2c_init); | |
112 | ||
113 | static void __exit mc13xxx_i2c_exit(void) | |
114 | { | |
115 | i2c_del_driver(&mc13xxx_i2c_driver); | |
116 | } | |
117 | module_exit(mc13xxx_i2c_exit); | |
118 | ||
119 | MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC"); | |
120 | MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au"); | |
121 | MODULE_LICENSE("GPL v2"); |