[deliverable/linux.git] / drivers / mfd / mc13xxx-i2c.c

/*
 * Copyright 2009-2010 Creative Product Design
 * Marc Reilly marc@cpdesign.com.au
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 2 as published by the
 * Free Software Foundation.
 */

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/mc13xxx.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/i2c.h>
#include <linux/err.h>

#include "mc13xxx.h"

static const struct i2c_device_id mc13xxx_i2c_device_id[] = {
	{
		.name = "mc13892",
		.driver_data = MC13XXX_ID_MC13892,
	}, {
		/* sentinel */
	}
};
MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);

static const struct of_device_id mc13xxx_dt_ids[] = {
	{
		.compatible = "fsl,mc13892",
		.data = (void *) &mc13xxx_i2c_device_id[0],
	}, {
		/* sentinel */
	}
};
MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);

static struct regmap_config mc13xxx_regmap_i2c_config = {
	.reg_bits = 8,
	.val_bits = 24,

	.max_register = MC13XXX_NUMREGS,

	.cache_type = REGCACHE_NONE,
};

static int mc13xxx_i2c_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
{
	const struct of_device_id *of_id;
	struct i2c_driver *idrv = to_i2c_driver(client->dev.driver);
	struct mc13xxx *mc13xxx;
	struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev);
	int ret;

	of_id = of_match_device(mc13xxx_dt_ids, &client->dev);
	if (of_id)
		idrv->id_table = (const struct i2c_device_id*) of_id->data;

	mc13xxx = kzalloc(sizeof(*mc13xxx), GFP_KERNEL);
	if (!mc13xxx)
		return -ENOMEM;

	dev_set_drvdata(&client->dev, mc13xxx);

	mc13xxx->dev = &client->dev;
	mutex_init(&mc13xxx->lock);

	mc13xxx->regmap = regmap_init_i2c(client, &mc13xxx_regmap_i2c_config);
	if (IS_ERR(mc13xxx->regmap)) {
		ret = PTR_ERR(mc13xxx->regmap);
		dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n",
				ret);
		dev_set_drvdata(&client->dev, NULL);
		kfree(mc13xxx);
		return ret;
	}

	ret = mc13xxx_common_init(mc13xxx, pdata, client->irq);

	if (ret == 0 && (id->driver_data != mc13xxx->ictype))
		dev_warn(mc13xxx->dev,
				"device id doesn't match auto detection!\n");

	return ret;
}

static int __devexit mc13xxx_i2c_remove(struct i2c_client *client)
{
	struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev);

	mc13xxx_common_cleanup(mc13xxx);

	return 0;
}

static struct i2c_driver mc13xxx_i2c_driver = {
	.id_table = mc13xxx_i2c_device_id,
	.driver = {
		.owner = THIS_MODULE,
		.name = "mc13xxx",
		.of_match_table = mc13xxx_dt_ids,
	},
	.probe = mc13xxx_i2c_probe,
	.remove = __devexit_p(mc13xxx_i2c_remove),
};

static int __init mc13xxx_i2c_init(void)
{
	return i2c_add_driver(&mc13xxx_i2c_driver);
}
subsys_initcall(mc13xxx_i2c_init);

static void __exit mc13xxx_i2c_exit(void)
{
	i2c_del_driver(&mc13xxx_i2c_driver);
}
module_exit(mc13xxx_i2c_exit);

MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
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",
	27	.driver_data = MC13XXX_ID_MC13892,
	28	}, {
	29	/* sentinel */
	30	}
	31	};
	32	MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);
	33
	34	static const struct of_device_id mc13xxx_dt_ids[] = {
	35	{
	36	.compatible = "fsl,mc13892",
	37	.data = (void *) &mc13xxx_i2c_device_id[0],
	38	}, {
	39	/* sentinel */
	40	}
	41	};
	42	MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
	43
	44	static struct regmap_config mc13xxx_regmap_i2c_config = {
	45	.reg_bits = 8,
	46	.val_bits = 24,
	47
	48	.max_register = MC13XXX_NUMREGS,
	49
	50	.cache_type = REGCACHE_NONE,
	51	};
	52
	53	static int mc13xxx_i2c_probe(struct i2c_client *client,
	54	const struct i2c_device_id *id)
	55	{
	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);
	60	int ret;
	61
	62	of_id = of_match_device(mc13xxx_dt_ids, &client->dev);
	63	if (of_id)
	64	idrv->id_table = (const struct i2c_device_id*) of_id->data;
65
66	mc13xxx = kzalloc(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 = 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",
79	ret);
80	dev_set_drvdata(&client->dev, NULL);
81	kfree(mc13xxx);
82	return ret;
83	}
84
85	ret = mc13xxx_common_init(mc13xxx, pdata, client->irq);
86
87	if (ret == 0 && (id->driver_data != mc13xxx->ictype))
88	dev_warn(mc13xxx->dev,
89	"device id doesn't match auto detection!\n");
90
91	return ret;
92	}
93
94	static int __devexit mc13xxx_i2c_remove(struct i2c_client *client)
95	{
96	struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev);
97
98	mc13xxx_common_cleanup(mc13xxx);
99
100	return 0;
101	}
102
103	static struct i2c_driver mc13xxx_i2c_driver = {
104	.id_table = mc13xxx_i2c_device_id,
105	.driver = {
106	.owner = THIS_MODULE,
107	.name = "mc13xxx",
108	.of_match_table = mc13xxx_dt_ids,
109	},
110	.probe = mc13xxx_i2c_probe,
111	.remove = __devexit_p(mc13xxx_i2c_remove),
112	};
113
114	static int __init mc13xxx_i2c_init(void)
115	{
116	return i2c_add_driver(&mc13xxx_i2c_driver);
117	}
118	subsys_initcall(mc13xxx_i2c_init);
119
120	static void __exit mc13xxx_i2c_exit(void)
121	{
122	i2c_del_driver(&mc13xxx_i2c_driver);
123	}
124	module_exit(mc13xxx_i2c_exit);
125
126	MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
127	MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
128	MODULE_LICENSE("GPL v2");