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

/*
 * Arizona-i2c.c  --  Arizona I2C bus interface
 *
 * Copyright 2012 Wolfson Microelectronics plc
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *
 * 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/err.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/of.h>

#include <linux/mfd/arizona/core.h>

#include "arizona.h"

static int arizona_i2c_probe(struct i2c_client *i2c,
			     const struct i2c_device_id *id)
{
	struct arizona *arizona;
	const struct regmap_config *regmap_config = NULL;
	unsigned long type;
	int ret;

	if (i2c->dev.of_node)
		type = arizona_of_get_type(&i2c->dev);
	else
		type = id->driver_data;

	switch (type) {
	case WM5102:
		if (IS_ENABLED(CONFIG_MFD_WM5102))
			regmap_config = &wm5102_i2c_regmap;
		break;
	case WM5110:
	case WM8280:
		if (IS_ENABLED(CONFIG_MFD_WM5110))
			regmap_config = &wm5110_i2c_regmap;
		break;
	case WM8997:
		if (IS_ENABLED(CONFIG_MFD_WM8997))
			regmap_config = &wm8997_i2c_regmap;
		break;
	case WM8998:
	case WM1814:
		if (IS_ENABLED(CONFIG_MFD_WM8998))
			regmap_config = &wm8998_i2c_regmap;
		break;
	default:
		dev_err(&i2c->dev, "Unknown device type %ld\n", type);
		return -EINVAL;
	}

	if (!regmap_config) {
		dev_err(&i2c->dev,
			"No kernel support for device type %ld\n", type);
		return -EINVAL;
	}

	arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
	if (arizona == NULL)
		return -ENOMEM;

	arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
	if (IS_ERR(arizona->regmap)) {
		ret = PTR_ERR(arizona->regmap);
		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
			ret);
		return ret;
	}

	arizona->type = type;
	arizona->dev = &i2c->dev;
	arizona->irq = i2c->irq;

	return arizona_dev_init(arizona);
}

static int arizona_i2c_remove(struct i2c_client *i2c)
{
	struct arizona *arizona = dev_get_drvdata(&i2c->dev);

	arizona_dev_exit(arizona);

	return 0;
}

static const struct i2c_device_id arizona_i2c_id[] = {
	{ "wm5102", WM5102 },
	{ "wm5110", WM5110 },
	{ "wm8280", WM8280 },
	{ "wm8997", WM8997 },
	{ "wm8998", WM8998 },
	{ "wm1814", WM1814 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);

static struct i2c_driver arizona_i2c_driver = {
	.driver = {
		.name	= "arizona",
		.pm	= &arizona_pm_ops,
		.of_match_table	= of_match_ptr(arizona_of_match),
	},
	.probe		= arizona_i2c_probe,
	.remove		= arizona_i2c_remove,
	.id_table	= arizona_i2c_id,
};

module_i2c_driver(arizona_i2c_driver);

MODULE_DESCRIPTION("Arizona I2C bus interface");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
c6f75622 MB	1	/*
	2	* Arizona-i2c.c -- Arizona I2C bus interface
	3	*
	4	* Copyright 2012 Wolfson Microelectronics plc
	5	*
	6	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12
	13	#include <linux/err.h>
	14	#include <linux/i2c.h>
	15	#include <linux/module.h>
	16	#include <linux/pm_runtime.h>
	17	#include <linux/regmap.h>
	18	#include <linux/regulator/consumer.h>
	19	#include <linux/slab.h>
3d6d1d1c	20	#include <linux/of.h>
c6f75622 MB	21
	22	#include <linux/mfd/arizona/core.h>
	23
	24	#include "arizona.h"
	25
f791be49	26	static int arizona_i2c_probe(struct i2c_client *i2c,
942786e6	27	const struct i2c_device_id *id)
c6f75622 MB	28	{
c6f75622 MB	29	struct arizona *arizona;
b61c1ec0	30	const struct regmap_config *regmap_config = NULL;
942786e6 LJ	31	unsigned long type;
942786e6 LJ	32	int ret;
c6f75622	33
d781009c MB	34	if (i2c->dev.of_node)
	35	type = arizona_of_get_type(&i2c->dev);
	36	else
	37	type = id->driver_data;
	38
	39	switch (type) {
c6f75622	40	case WM5102:
b61c1ec0 RF	41	if (IS_ENABLED(CONFIG_MFD_WM5102))
b61c1ec0 RF	42	regmap_config = &wm5102_i2c_regmap;
c6f75622	43	break;
e102befe	44	case WM5110:
e5d4ef0d	45	case WM8280:
b61c1ec0 RF	46	if (IS_ENABLED(CONFIG_MFD_WM5110))
b61c1ec0 RF	47	regmap_config = &wm5110_i2c_regmap;
e102befe	48	break;
dc7d4863	49	case WM8997:
b61c1ec0 RF	50	if (IS_ENABLED(CONFIG_MFD_WM8997))
b61c1ec0 RF	51	regmap_config = &wm8997_i2c_regmap;
dc7d4863	52	break;
6887b042 RF	53	case WM8998:
6887b042 RF	54	case WM1814:
b61c1ec0 RF	55	if (IS_ENABLED(CONFIG_MFD_WM8998))
b61c1ec0 RF	56	regmap_config = &wm8998_i2c_regmap;
6887b042	57	break;
c6f75622	58	default:
2e44e28a	59	dev_err(&i2c->dev, "Unknown device type %ld\n", type);
c6f75622 MB	60	return -EINVAL;
	61	}
	62
b61c1ec0 RF	63	if (!regmap_config) {
	64	dev_err(&i2c->dev,
	65	"No kernel support for device type %ld\n", type);
	66	return -EINVAL;
	67	}
	68
c6f75622 MB	69	arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
	70	if (arizona == NULL)
	71	return -ENOMEM;
	72
	73	arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
	74	if (IS_ERR(arizona->regmap)) {
	75	ret = PTR_ERR(arizona->regmap);
	76	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
	77	ret);
	78	return ret;
	79	}
	80
2e44e28a	81	arizona->type = type;
c6f75622 MB	82	arizona->dev = &i2c->dev;
	83	arizona->irq = i2c->irq;
	84
	85	return arizona_dev_init(arizona);
	86	}
	87
4740f73f	88	static int arizona_i2c_remove(struct i2c_client *i2c)
c6f75622 MB	89	{
c6f75622 MB	90	struct arizona *arizona = dev_get_drvdata(&i2c->dev);
9f6e872a	91
c6f75622	92	arizona_dev_exit(arizona);
9f6e872a	93
c6f75622 MB	94	return 0;
	95	}
	96
	97	static const struct i2c_device_id arizona_i2c_id[] = {
	98	{ "wm5102", WM5102 },
e102befe	99	{ "wm5110", WM5110 },
e5d4ef0d	100	{ "wm8280", WM8280 },
dc7d4863	101	{ "wm8997", WM8997 },
6887b042 RF	102	{ "wm8998", WM8998 },
6887b042 RF	103	{ "wm1814", WM1814 },
c6f75622 MB	104	{ }
	105	};
	106	MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
	107
	108	static struct i2c_driver arizona_i2c_driver = {
	109	.driver = {
	110	.name = "arizona",
c6f75622	111	.pm = &arizona_pm_ops,
d781009c	112	.of_match_table = of_match_ptr(arizona_of_match),
c6f75622 MB	113	},
c6f75622 MB	114	.probe = arizona_i2c_probe,
84449216	115	.remove = arizona_i2c_remove,
c6f75622 MB	116	.id_table = arizona_i2c_id,
	117	};
	118
	119	module_i2c_driver(arizona_i2c_driver);
	120
	121	MODULE_DESCRIPTION("Arizona I2C bus interface");
	122	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	123	MODULE_LICENSE("GPL");