[linux-2.6-block.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/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 = (kernel_ulong_t)&mc13xxx_variant_mc13892,
	}, {
		.name = "mc34708",
		.driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708,
	}, {
		/* sentinel */
	}
};
MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);

static const struct of_device_id mc13xxx_dt_ids[] = {
	{
		.compatible = "fsl,mc13892",
		.data = &mc13xxx_variant_mc13892,
	}, {
		.compatible = "fsl,mc34708",
		.data = &mc13xxx_variant_mc34708,
	}, {
		/* sentinel */
	}
};
MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);

static const 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;
	int ret;

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

	dev_set_drvdata(&client->dev, mc13xxx);

	mc13xxx->irq = client->irq;

	mc13xxx->regmap = devm_regmap_init_i2c(client,
					       &mc13xxx_regmap_i2c_config);
	if (IS_ERR(mc13xxx->regmap)) {
		ret = PTR_ERR(mc13xxx->regmap);
		dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret);
		return ret;
	}

	if (client->dev.of_node) {
		const struct of_device_id *of_id =
			of_match_device(mc13xxx_dt_ids, &client->dev);
		mc13xxx->variant = of_id->data;
	} else {
		mc13xxx->variant = (void *)id->driver_data;
	}

	return mc13xxx_common_init(&client->dev);
}

static int mc13xxx_i2c_remove(struct i2c_client *client)
{
	return mc13xxx_common_exit(&client->dev);
}

static struct i2c_driver mc13xxx_i2c_driver = {
	.id_table = mc13xxx_i2c_device_id,
	.driver = {
		.name = "mc13xxx",
		.of_match_table = mc13xxx_dt_ids,
	},
	.probe = mc13xxx_i2c_probe,
	.remove = 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>
df3df646 MR	13	#include <linux/mfd/core.h>
	14	#include <linux/mfd/mc13xxx.h>
	15	#include <linux/of.h>
	16	#include <linux/of_device.h>
	17	#include <linux/of_gpio.h>
	18	#include <linux/i2c.h>
	19	#include <linux/err.h>
	20
	21	#include "mc13xxx.h"
	22
	23	static const struct i2c_device_id mc13xxx_i2c_device_id[] = {
	24	{
	25	.name = "mc13892",
cd0f34b0	26	.driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892,
0312e024 UKK	27	}, {
	28	.name = "mc34708",
	29	.driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708,
df3df646 MR	30	}, {
	31	/* sentinel */
	32	}
	33	};
	34	MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);
	35
	36	static const struct of_device_id mc13xxx_dt_ids[] = {
	37	{
	38	.compatible = "fsl,mc13892",
cd0f34b0	39	.data = &mc13xxx_variant_mc13892,
0312e024 UKK	40	}, {
	41	.compatible = "fsl,mc34708",
	42	.data = &mc13xxx_variant_mc34708,
df3df646 MR	43	}, {
	44	/* sentinel */
	45	}
	46	};
	47	MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
	48
18dd21ab	49	static const struct regmap_config mc13xxx_regmap_i2c_config = {
df3df646 MR	50	.reg_bits = 8,
	51	.val_bits = 24,
	52
	53	.max_register = MC13XXX_NUMREGS,
	54
	55	.cache_type = REGCACHE_NONE,
	56	};
	57
	58	static int mc13xxx_i2c_probe(struct i2c_client *client,
	59	const struct i2c_device_id *id)
	60	{
df3df646	61	struct mc13xxx *mc13xxx;
df3df646 MR	62	int ret;
df3df646 MR	63
e7c706b1	64	mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
df3df646 MR	65	if (!mc13xxx)
	66	return -ENOMEM;
	67
	68	dev_set_drvdata(&client->dev, mc13xxx);
	69
db9ef449	70	mc13xxx->irq = client->irq;
df3df646	71
e7c706b1 AL	72	mc13xxx->regmap = devm_regmap_init_i2c(client,
e7c706b1 AL	73	&mc13xxx_regmap_i2c_config);
df3df646 MR	74	if (IS_ERR(mc13xxx->regmap)) {
df3df646 MR	75	ret = PTR_ERR(mc13xxx->regmap);
db9ef449	76	dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret);
df3df646 MR	77	return ret;
	78	}
	79
cd0f34b0 UKK	80	if (client->dev.of_node) {
	81	const struct of_device_id *of_id =
	82	of_match_device(mc13xxx_dt_ids, &client->dev);
	83	mc13xxx->variant = of_id->data;
	84	} else {
	85	mc13xxx->variant = (void *)id->driver_data;
	86	}
df3df646	87
db9ef449	88	return mc13xxx_common_init(&client->dev);
df3df646 MR	89	}
df3df646 MR	90
4740f73f	91	static int mc13xxx_i2c_remove(struct i2c_client *client)
df3df646	92	{
db9ef449	93	return mc13xxx_common_exit(&client->dev);
df3df646 MR	94	}
	95
	96	static struct i2c_driver mc13xxx_i2c_driver = {
	97	.id_table = mc13xxx_i2c_device_id,
	98	.driver = {
df3df646 MR	99	.name = "mc13xxx",
	100	.of_match_table = mc13xxx_dt_ids,
	101	},
	102	.probe = mc13xxx_i2c_probe,
84449216	103	.remove = mc13xxx_i2c_remove,
df3df646 MR	104	};
	105
	106	static int __init mc13xxx_i2c_init(void)
	107	{
	108	return i2c_add_driver(&mc13xxx_i2c_driver);
	109	}
	110	subsys_initcall(mc13xxx_i2c_init);
	111
	112	static void __exit mc13xxx_i2c_exit(void)
	113	{
	114	i2c_del_driver(&mc13xxx_i2c_driver);
	115	}
	116	module_exit(mc13xxx_i2c_exit);
	117
	118	MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
	119	MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
	120	MODULE_LICENSE("GPL v2");