[mirror_ubuntu-hirsute-kernel.git] / drivers / mfd / da9055-i2c.c

// SPDX-License-Identifier: GPL-2.0-or-later
 /* I2C access for DA9055 PMICs.
 *
 * Copyright(c) 2012 Dialog Semiconductor Ltd.
 *
 * Author: David Dajun Chen <dchen@diasemi.com>
 */

#include <linux/module.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_device.h>

#include <linux/mfd/da9055/core.h>

static int da9055_i2c_probe(struct i2c_client *i2c,
				      const struct i2c_device_id *id)
{
	struct da9055 *da9055;
	int ret;

	da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
	if (!da9055)
		return -ENOMEM;

	da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
	if (IS_ERR(da9055->regmap)) {
		ret = PTR_ERR(da9055->regmap);
		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
			ret);
		return ret;
	}

	da9055->dev = &i2c->dev;
	da9055->chip_irq = i2c->irq;

	i2c_set_clientdata(i2c, da9055);

	return da9055_device_init(da9055);
}

static int da9055_i2c_remove(struct i2c_client *i2c)
{
	struct da9055 *da9055 = i2c_get_clientdata(i2c);

	da9055_device_exit(da9055);

	return 0;
}

/*
 * DO NOT change the device Ids. The naming is intentionally specific as both
 * the PMIC and CODEC parts of this chip are instantiated separately as I2C
 * devices (both have configurable I2C addresses, and are to all intents and
 * purposes separate). As a result there are specific DA9055 ids for PMIC
 * and CODEC, which must be different to operate together.
 */
static const struct i2c_device_id da9055_i2c_id[] = {
	{"da9055-pmic", 0},
	{ }
};
MODULE_DEVICE_TABLE(i2c, da9055_i2c_id);

static const struct of_device_id da9055_of_match[] = {
	{ .compatible = "dlg,da9055-pmic", },
	{ }
};

static struct i2c_driver da9055_i2c_driver = {
	.probe = da9055_i2c_probe,
	.remove = da9055_i2c_remove,
	.id_table = da9055_i2c_id,
	.driver = {
		.name = "da9055-pmic",
		.of_match_table = of_match_ptr(da9055_of_match),
	},
};

static int __init da9055_i2c_init(void)
{
	int ret;

	ret = i2c_add_driver(&da9055_i2c_driver);
	if (ret != 0) {
		pr_err("DA9055 I2C registration failed %d\n", ret);
		return ret;
	}

	return 0;
}
subsys_initcall(da9055_i2c_init);

static void __exit da9055_i2c_exit(void)
{
	i2c_del_driver(&da9055_i2c_driver);
}
module_exit(da9055_i2c_exit);

MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
MODULE_LICENSE("GPL");
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
2896434c AJ	2	/* I2C access for DA9055 PMICs.
	3	*
	4	* Copyright(c) 2012 Dialog Semiconductor Ltd.
	5	*
	6	* Author: David Dajun Chen <dchen@diasemi.com>
2896434c AJ	7	*/
	8
	9	#include <linux/module.h>
	10	#include <linux/device.h>
	11	#include <linux/i2c.h>
	12	#include <linux/err.h>
d9a33515 AT	13	#include <linux/of.h>
d9a33515 AT	14	#include <linux/of_device.h>
2896434c AJ	15
	16	#include <linux/mfd/da9055/core.h>
	17
f791be49	18	static int da9055_i2c_probe(struct i2c_client *i2c,
2896434c AJ	19	const struct i2c_device_id *id)
	20	{
	21	struct da9055 *da9055;
	22	int ret;
	23
	24	da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
	25	if (!da9055)
	26	return -ENOMEM;
	27
	28	da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
	29	if (IS_ERR(da9055->regmap)) {
	30	ret = PTR_ERR(da9055->regmap);
	31	dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
	32	ret);
	33	return ret;
	34	}
	35
	36	da9055->dev = &i2c->dev;
	37	da9055->chip_irq = i2c->irq;
	38
	39	i2c_set_clientdata(i2c, da9055);
	40
	41	return da9055_device_init(da9055);
	42	}
	43
4740f73f	44	static int da9055_i2c_remove(struct i2c_client *i2c)
2896434c AJ	45	{
	46	struct da9055 *da9055 = i2c_get_clientdata(i2c);
	47
	48	da9055_device_exit(da9055);
	49
	50	return 0;
	51	}
	52
07b0e5b1 AT	53	/*
	54	* DO NOT change the device Ids. The naming is intentionally specific as both
	55	* the PMIC and CODEC parts of this chip are instantiated separately as I2C
	56	* devices (both have configurable I2C addresses, and are to all intents and
	57	* purposes separate). As a result there are specific DA9055 ids for PMIC
	58	* and CODEC, which must be different to operate together.
	59	*/
6af42e5d	60	static const struct i2c_device_id da9055_i2c_id[] = {
07b0e5b1	61	{"da9055-pmic", 0},
2896434c AJ	62	{ }
2896434c AJ	63	};
07b0e5b1	64	MODULE_DEVICE_TABLE(i2c, da9055_i2c_id);
2896434c	65
d9a33515 AT	66	static const struct of_device_id da9055_of_match[] = {
	67	{ .compatible = "dlg,da9055-pmic", },
	68	{ }
	69	};
	70
2896434c AJ	71	static struct i2c_driver da9055_i2c_driver = {
2896434c AJ	72	.probe = da9055_i2c_probe,
84449216	73	.remove = da9055_i2c_remove,
2896434c AJ	74	.id_table = da9055_i2c_id,
2896434c AJ	75	.driver = {
07b0e5b1	76	.name = "da9055-pmic",
d9a33515	77	.of_match_table = of_match_ptr(da9055_of_match),
2896434c AJ	78	},
	79	};
	80
	81	static int __init da9055_i2c_init(void)
	82	{
	83	int ret;
	84
	85	ret = i2c_add_driver(&da9055_i2c_driver);
	86	if (ret != 0) {
	87	pr_err("DA9055 I2C registration failed %d\n", ret);
	88	return ret;
	89	}
	90
	91	return 0;
	92	}
	93	subsys_initcall(da9055_i2c_init);
	94
	95	static void __exit da9055_i2c_exit(void)
	96	{
	97	i2c_del_driver(&da9055_i2c_driver);
	98	}
	99	module_exit(da9055_i2c_exit);
	100
	101	MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
	102	MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
	103	MODULE_LICENSE("GPL");