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

/*
 * Copyright 2009-2010 Creative Product Design
 * Marc Reilly [email protected]
 *
 * 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)
{
	struct mc13xxx *mc13xxx;
	struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev);
	int ret;

	mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
	if (!mc13xxx)
		return -ENOMEM;

	dev_set_drvdata(&client->dev, mc13xxx);

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

	mc13xxx->regmap = devm_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);
		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 <[email protected]");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
df3df646 MR	1	/*
	2	* Copyright 2009-2010 Creative Product Design
	3	* Marc Reilly [email protected]
	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	{
df3df646 MR	56	struct mc13xxx *mc13xxx;
	57	struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev);
	58	int ret;
	59
e7c706b1	60	mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
df3df646 MR	61	if (!mc13xxx)
	62	return -ENOMEM;
	63
	64	dev_set_drvdata(&client->dev, mc13xxx);
	65
	66	mc13xxx->dev = &client->dev;
	67	mutex_init(&mc13xxx->lock);
	68
e7c706b1 AL	69	mc13xxx->regmap = devm_regmap_init_i2c(client,
e7c706b1 AL	70	&mc13xxx_regmap_i2c_config);
df3df646 MR	71	if (IS_ERR(mc13xxx->regmap)) {
	72	ret = PTR_ERR(mc13xxx->regmap);
	73	dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n",
	74	ret);
	75	dev_set_drvdata(&client->dev, NULL);
df3df646 MR	76	return ret;
	77	}
	78
	79	ret = mc13xxx_common_init(mc13xxx, pdata, client->irq);
	80
	81	if (ret == 0 && (id->driver_data != mc13xxx->ictype))
	82	dev_warn(mc13xxx->dev,
	83	"device id doesn't match auto detection!\n");
	84
	85	return ret;
	86	}
	87
	88	static int __devexit mc13xxx_i2c_remove(struct i2c_client *client)
	89	{
	90	struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev);
	91
	92	mc13xxx_common_cleanup(mc13xxx);
	93
	94	return 0;
	95	}
	96
	97	static struct i2c_driver mc13xxx_i2c_driver = {
	98	.id_table = mc13xxx_i2c_device_id,
	99	.driver = {
	100	.owner = THIS_MODULE,
	101	.name = "mc13xxx",
	102	.of_match_table = mc13xxx_dt_ids,
	103	},
	104	.probe = mc13xxx_i2c_probe,
	105	.remove = __devexit_p(mc13xxx_i2c_remove),
	106	};
	107
	108	static int __init mc13xxx_i2c_init(void)
	109	{
	110	return i2c_add_driver(&mc13xxx_i2c_driver);
	111	}
	112	subsys_initcall(mc13xxx_i2c_init);
	113
	114	static void __exit mc13xxx_i2c_exit(void)
	115	{
	116	i2c_del_driver(&mc13xxx_i2c_driver);
	117	}
	118	module_exit(mc13xxx_i2c_exit);
	119
	120	MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
	121	MODULE_AUTHOR("Marc Reilly <[email protected]");
	122	MODULE_LICENSE("GPL v2");