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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> | |
13 | #include <linux/mutex.h> | |
14 | #include <linux/mfd/core.h> | |
15 | #include <linux/mfd/mc13xxx.h> | |
16 | #include <linux/of.h> | |
17 | #include <linux/of_device.h> | |
18 | #include <linux/of_gpio.h> | |
19 | #include <linux/i2c.h> | |
20 | #include <linux/err.h> | |
21 | ||
22 | #include "mc13xxx.h" | |
23 | ||
24 | static const struct i2c_device_id mc13xxx_i2c_device_id[] = { | |
25 | { | |
26 | .name = "mc13892", | |
cd0f34b0 | 27 | .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892, |
0312e024 UKK |
28 | }, { |
29 | .name = "mc34708", | |
30 | .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708, | |
df3df646 MR |
31 | }, { |
32 | /* sentinel */ | |
33 | } | |
34 | }; | |
35 | MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id); | |
36 | ||
37 | static const struct of_device_id mc13xxx_dt_ids[] = { | |
38 | { | |
39 | .compatible = "fsl,mc13892", | |
cd0f34b0 | 40 | .data = &mc13xxx_variant_mc13892, |
0312e024 UKK |
41 | }, { |
42 | .compatible = "fsl,mc34708", | |
43 | .data = &mc13xxx_variant_mc34708, | |
df3df646 MR |
44 | }, { |
45 | /* sentinel */ | |
46 | } | |
47 | }; | |
48 | MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids); | |
49 | ||
50 | static struct regmap_config mc13xxx_regmap_i2c_config = { | |
51 | .reg_bits = 8, | |
52 | .val_bits = 24, | |
53 | ||
54 | .max_register = MC13XXX_NUMREGS, | |
55 | ||
56 | .cache_type = REGCACHE_NONE, | |
57 | }; | |
58 | ||
59 | static int mc13xxx_i2c_probe(struct i2c_client *client, | |
60 | const struct i2c_device_id *id) | |
61 | { | |
df3df646 MR |
62 | struct mc13xxx *mc13xxx; |
63 | struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev); | |
64 | int ret; | |
65 | ||
e7c706b1 | 66 | mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL); |
df3df646 MR |
67 | if (!mc13xxx) |
68 | return -ENOMEM; | |
69 | ||
70 | dev_set_drvdata(&client->dev, mc13xxx); | |
71 | ||
72 | mc13xxx->dev = &client->dev; | |
73 | mutex_init(&mc13xxx->lock); | |
74 | ||
e7c706b1 AL |
75 | mc13xxx->regmap = devm_regmap_init_i2c(client, |
76 | &mc13xxx_regmap_i2c_config); | |
df3df646 MR |
77 | if (IS_ERR(mc13xxx->regmap)) { |
78 | ret = PTR_ERR(mc13xxx->regmap); | |
79 | dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n", | |
80 | ret); | |
81 | dev_set_drvdata(&client->dev, NULL); | |
df3df646 MR |
82 | return ret; |
83 | } | |
84 | ||
cd0f34b0 UKK |
85 | if (client->dev.of_node) { |
86 | const struct of_device_id *of_id = | |
87 | of_match_device(mc13xxx_dt_ids, &client->dev); | |
88 | mc13xxx->variant = of_id->data; | |
89 | } else { | |
90 | mc13xxx->variant = (void *)id->driver_data; | |
91 | } | |
df3df646 | 92 | |
cd0f34b0 | 93 | ret = mc13xxx_common_init(mc13xxx, pdata, client->irq); |
df3df646 MR |
94 | |
95 | return ret; | |
96 | } | |
97 | ||
4740f73f | 98 | static int mc13xxx_i2c_remove(struct i2c_client *client) |
df3df646 MR |
99 | { |
100 | struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev); | |
101 | ||
102 | mc13xxx_common_cleanup(mc13xxx); | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | static struct i2c_driver mc13xxx_i2c_driver = { | |
108 | .id_table = mc13xxx_i2c_device_id, | |
109 | .driver = { | |
110 | .owner = THIS_MODULE, | |
111 | .name = "mc13xxx", | |
112 | .of_match_table = mc13xxx_dt_ids, | |
113 | }, | |
114 | .probe = mc13xxx_i2c_probe, | |
84449216 | 115 | .remove = mc13xxx_i2c_remove, |
df3df646 MR |
116 | }; |
117 | ||
118 | static int __init mc13xxx_i2c_init(void) | |
119 | { | |
120 | return i2c_add_driver(&mc13xxx_i2c_driver); | |
121 | } | |
122 | subsys_initcall(mc13xxx_i2c_init); | |
123 | ||
124 | static void __exit mc13xxx_i2c_exit(void) | |
125 | { | |
126 | i2c_del_driver(&mc13xxx_i2c_driver); | |
127 | } | |
128 | module_exit(mc13xxx_i2c_exit); | |
129 | ||
130 | MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC"); | |
131 | MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au"); | |
132 | MODULE_LICENSE("GPL v2"); |