2 * Copyright 2009-2010 Creative Product Design
3 * Marc Reilly marc@cpdesign.com.au
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.
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>
17 #include <linux/of_device.h>
18 #include <linux/of_gpio.h>
19 #include <linux/i2c.h>
20 #include <linux/err.h>
24 static const struct i2c_device_id mc13xxx_i2c_device_id
[] = {
27 .driver_data
= MC13XXX_ID_MC13892
,
32 MODULE_DEVICE_TABLE(i2c
, mc13xxx_i2c_device_id
);
34 static const struct of_device_id mc13xxx_dt_ids
[] = {
36 .compatible
= "fsl,mc13892",
37 .data
= (void *) &mc13xxx_i2c_device_id
[0],
42 MODULE_DEVICE_TABLE(of
, mc13xxx_dt_ids
);
44 static struct regmap_config mc13xxx_regmap_i2c_config
= {
48 .max_register
= MC13XXX_NUMREGS
,
50 .cache_type
= REGCACHE_NONE
,
53 static int mc13xxx_i2c_probe(struct i2c_client
*client
,
54 const struct i2c_device_id
*id
)
56 const struct of_device_id
*of_id
;
57 struct i2c_driver
*idrv
= to_i2c_driver(client
->dev
.driver
);
58 struct mc13xxx
*mc13xxx
;
59 struct mc13xxx_platform_data
*pdata
= dev_get_platdata(&client
->dev
);
62 of_id
= of_match_device(mc13xxx_dt_ids
, &client
->dev
);
64 idrv
->id_table
= (const struct i2c_device_id
*) of_id
->data
;
66 mc13xxx
= kzalloc(sizeof(*mc13xxx
), GFP_KERNEL
);
70 dev_set_drvdata(&client
->dev
, mc13xxx
);
72 mc13xxx
->dev
= &client
->dev
;
73 mutex_init(&mc13xxx
->lock
);
75 mc13xxx
->regmap
= regmap_init_i2c(client
, &mc13xxx_regmap_i2c_config
);
76 if (IS_ERR(mc13xxx
->regmap
)) {
77 ret
= PTR_ERR(mc13xxx
->regmap
);
78 dev_err(mc13xxx
->dev
, "Failed to initialize register map: %d\n",
80 dev_set_drvdata(&client
->dev
, NULL
);
85 ret
= mc13xxx_common_init(mc13xxx
, pdata
, client
->irq
);
87 if (ret
== 0 && (id
->driver_data
!= mc13xxx
->ictype
))
88 dev_warn(mc13xxx
->dev
,
89 "device id doesn't match auto detection!\n");
94 static int __devexit
mc13xxx_i2c_remove(struct i2c_client
*client
)
96 struct mc13xxx
*mc13xxx
= dev_get_drvdata(&client
->dev
);
98 mc13xxx_common_cleanup(mc13xxx
);
103 static struct i2c_driver mc13xxx_i2c_driver
= {
104 .id_table
= mc13xxx_i2c_device_id
,
106 .owner
= THIS_MODULE
,
108 .of_match_table
= mc13xxx_dt_ids
,
110 .probe
= mc13xxx_i2c_probe
,
111 .remove
= __devexit_p(mc13xxx_i2c_remove
),
114 static int __init
mc13xxx_i2c_init(void)
116 return i2c_add_driver(&mc13xxx_i2c_driver
);
118 subsys_initcall(mc13xxx_i2c_init
);
120 static void __exit
mc13xxx_i2c_exit(void)
122 i2c_del_driver(&mc13xxx_i2c_driver
);
124 module_exit(mc13xxx_i2c_exit
);
126 MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
127 MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
128 MODULE_LICENSE("GPL v2");