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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", |
27 | .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892, |
28 | }, { |
29 | .name = "mc34708", |
30 | .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708, |
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", |
40 | .data = &mc13xxx_variant_mc13892, |
41 | }, { |
42 | .compatible = "fsl,mc34708", |
43 | .data = &mc13xxx_variant_mc34708, |
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 | { |
62 | struct mc13xxx *mc13xxx; |
63 | struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev); |
64 | int ret; |
65 | |
66 | mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL); |
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 | |
75 | mc13xxx->regmap = devm_regmap_init_i2c(client, |
76 | &mc13xxx_regmap_i2c_config); |
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); |
82 | return ret; |
83 | } |
84 | |
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 | } |
92 | |
93 | ret = mc13xxx_common_init(mc13xxx, pdata, client->irq); |
94 | |
95 | return ret; |
96 | } |
97 | |
98 | static int mc13xxx_i2c_remove(struct i2c_client *client) |
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, |
115 | .remove = mc13xxx_i2c_remove, |
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"); |
133 |
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