[linux.git] / drivers / mfd / bcm590xx.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Broadcom BCM590xx PMU
 *
 * Copyright 2014 Linaro Limited
 * Author: Matt Porter <[email protected]>
 */

#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/mfd/bcm590xx.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/slab.h>

static const struct mfd_cell bcm590xx_devs[] = {
	{
		.name = "bcm590xx-vregs",
	},
};

static const struct regmap_config bcm590xx_regmap_config_pri = {
	.reg_bits	= 8,
	.val_bits	= 8,
	.max_register	= BCM590XX_MAX_REGISTER_PRI,
	.cache_type	= REGCACHE_RBTREE,
};

static const struct regmap_config bcm590xx_regmap_config_sec = {
	.reg_bits	= 8,
	.val_bits	= 8,
	.max_register	= BCM590XX_MAX_REGISTER_SEC,
	.cache_type	= REGCACHE_RBTREE,
};

static int bcm590xx_i2c_probe(struct i2c_client *i2c_pri)
{
	struct bcm590xx *bcm590xx;
	int ret;

	bcm590xx = devm_kzalloc(&i2c_pri->dev, sizeof(*bcm590xx), GFP_KERNEL);
	if (!bcm590xx)
		return -ENOMEM;

	i2c_set_clientdata(i2c_pri, bcm590xx);
	bcm590xx->dev = &i2c_pri->dev;
	bcm590xx->i2c_pri = i2c_pri;

	bcm590xx->regmap_pri = devm_regmap_init_i2c(i2c_pri,
						 &bcm590xx_regmap_config_pri);
	if (IS_ERR(bcm590xx->regmap_pri)) {
		ret = PTR_ERR(bcm590xx->regmap_pri);
		dev_err(&i2c_pri->dev, "primary regmap init failed: %d\n", ret);
		return ret;
	}

	/* Secondary I2C slave address is the base address with A(2) asserted */
	bcm590xx->i2c_sec = i2c_new_dummy_device(i2c_pri->adapter,
					  i2c_pri->addr | BIT(2));
	if (IS_ERR(bcm590xx->i2c_sec)) {
		dev_err(&i2c_pri->dev, "failed to add secondary I2C device\n");
		return PTR_ERR(bcm590xx->i2c_sec);
	}
	i2c_set_clientdata(bcm590xx->i2c_sec, bcm590xx);

	bcm590xx->regmap_sec = devm_regmap_init_i2c(bcm590xx->i2c_sec,
						&bcm590xx_regmap_config_sec);
	if (IS_ERR(bcm590xx->regmap_sec)) {
		ret = PTR_ERR(bcm590xx->regmap_sec);
		dev_err(&bcm590xx->i2c_sec->dev,
			"secondary regmap init failed: %d\n", ret);
		goto err;
	}

	ret = devm_mfd_add_devices(&i2c_pri->dev, -1, bcm590xx_devs,
				   ARRAY_SIZE(bcm590xx_devs), NULL, 0, NULL);
	if (ret < 0) {
		dev_err(&i2c_pri->dev, "failed to add sub-devices: %d\n", ret);
		goto err;
	}

	return 0;

err:
	i2c_unregister_device(bcm590xx->i2c_sec);
	return ret;
}

static const struct of_device_id bcm590xx_of_match[] = {
	{ .compatible = "brcm,bcm59056" },
	{ }
};
MODULE_DEVICE_TABLE(of, bcm590xx_of_match);

static const struct i2c_device_id bcm590xx_i2c_id[] = {
	{ "bcm59056" },
	{ }
};
MODULE_DEVICE_TABLE(i2c, bcm590xx_i2c_id);

static struct i2c_driver bcm590xx_i2c_driver = {
	.driver = {
		   .name = "bcm590xx",
		   .of_match_table = bcm590xx_of_match,
	},
	.probe = bcm590xx_i2c_probe,
	.id_table = bcm590xx_i2c_id,
};
module_i2c_driver(bcm590xx_i2c_driver);

MODULE_AUTHOR("Matt Porter <[email protected]>");
MODULE_DESCRIPTION("BCM590xx multi-function driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
037b60f2 MP	2	/*
	3	* Broadcom BCM590xx PMU
	4	*
	5	* Copyright 2014 Linaro Limited
	6	* Author: Matt Porter <[email protected]>
037b60f2 MP	7	*/
	8
	9	#include <linux/err.h>
	10	#include <linux/i2c.h>
	11	#include <linux/init.h>
	12	#include <linux/mfd/bcm590xx.h>
	13	#include <linux/mfd/core.h>
	14	#include <linux/module.h>
	15	#include <linux/moduleparam.h>
	16	#include <linux/of.h>
037b60f2 MP	17	#include <linux/regmap.h>
	18	#include <linux/slab.h>
	19
	20	static const struct mfd_cell bcm590xx_devs[] = {
	21	{
	22	.name = "bcm590xx-vregs",
	23	},
	24	};
	25
9e1e7263	26	static const struct regmap_config bcm590xx_regmap_config_pri = {
037b60f2 MP	27	.reg_bits = 8,
037b60f2 MP	28	.val_bits = 8,
9e1e7263	29	.max_register = BCM590XX_MAX_REGISTER_PRI,
037b60f2 MP	30	.cache_type = REGCACHE_RBTREE,
	31	};
	32
9e1e7263 MP	33	static const struct regmap_config bcm590xx_regmap_config_sec = {
	34	.reg_bits = 8,
	35	.val_bits = 8,
	36	.max_register = BCM590XX_MAX_REGISTER_SEC,
	37	.cache_type = REGCACHE_RBTREE,
	38	};
	39
ace24876	40	static int bcm590xx_i2c_probe(struct i2c_client *i2c_pri)
037b60f2 MP	41	{
	42	struct bcm590xx *bcm590xx;
	43	int ret;
	44
9e1e7263	45	bcm590xx = devm_kzalloc(&i2c_pri->dev, sizeof(*bcm590xx), GFP_KERNEL);
037b60f2 MP	46	if (!bcm590xx)
	47	return -ENOMEM;
	48
9e1e7263 MP	49	i2c_set_clientdata(i2c_pri, bcm590xx);
	50	bcm590xx->dev = &i2c_pri->dev;
	51	bcm590xx->i2c_pri = i2c_pri;
037b60f2	52
9e1e7263 MP	53	bcm590xx->regmap_pri = devm_regmap_init_i2c(i2c_pri,
	54	&bcm590xx_regmap_config_pri);
	55	if (IS_ERR(bcm590xx->regmap_pri)) {
	56	ret = PTR_ERR(bcm590xx->regmap_pri);
	57	dev_err(&i2c_pri->dev, "primary regmap init failed: %d\n", ret);
037b60f2 MP	58	return ret;
	59	}
	60
9e1e7263	61	/* Secondary I2C slave address is the base address with A(2) asserted */
98f0c05f	62	bcm590xx->i2c_sec = i2c_new_dummy_device(i2c_pri->adapter,
9e1e7263	63	i2c_pri->addr \| BIT(2));
98f0c05f	64	if (IS_ERR(bcm590xx->i2c_sec)) {
9e1e7263	65	dev_err(&i2c_pri->dev, "failed to add secondary I2C device\n");
98f0c05f	66	return PTR_ERR(bcm590xx->i2c_sec);
9e1e7263 MP	67	}
	68	i2c_set_clientdata(bcm590xx->i2c_sec, bcm590xx);
	69
	70	bcm590xx->regmap_sec = devm_regmap_init_i2c(bcm590xx->i2c_sec,
	71	&bcm590xx_regmap_config_sec);
	72	if (IS_ERR(bcm590xx->regmap_sec)) {
	73	ret = PTR_ERR(bcm590xx->regmap_sec);
	74	dev_err(&bcm590xx->i2c_sec->dev,
	75	"secondary regmap init failed: %d\n", ret);
	76	goto err;
	77	}
	78
9148f2c0 LD	79	ret = devm_mfd_add_devices(&i2c_pri->dev, -1, bcm590xx_devs,
9148f2c0 LD	80	ARRAY_SIZE(bcm590xx_devs), NULL, 0, NULL);
9e1e7263 MP	81	if (ret < 0) {
	82	dev_err(&i2c_pri->dev, "failed to add sub-devices: %d\n", ret);
	83	goto err;
	84	}
	85
	86	return 0;
037b60f2	87
9e1e7263 MP	88	err:
9e1e7263 MP	89	i2c_unregister_device(bcm590xx->i2c_sec);
037b60f2 MP	90	return ret;
	91	}
	92
	93	static const struct of_device_id bcm590xx_of_match[] = {
	94	{ .compatible = "brcm,bcm59056" },
	95	{ }
	96	};
3827c510	97	MODULE_DEVICE_TABLE(of, bcm590xx_of_match);
037b60f2 MP	98
	99	static const struct i2c_device_id bcm590xx_i2c_id[] = {
	100	{ "bcm59056" },
	101	{ }
	102	};
	103	MODULE_DEVICE_TABLE(i2c, bcm590xx_i2c_id);
	104
	105	static struct i2c_driver bcm590xx_i2c_driver = {
	106	.driver = {
	107	.name = "bcm590xx",
b0ad7ebe	108	.of_match_table = bcm590xx_of_match,
037b60f2	109	},
9816d859	110	.probe = bcm590xx_i2c_probe,
037b60f2 MP	111	.id_table = bcm590xx_i2c_id,
	112	};
	113	module_i2c_driver(bcm590xx_i2c_driver);
	114
	115	MODULE_AUTHOR("Matt Porter <[email protected]>");
	116	MODULE_DESCRIPTION("BCM590xx multi-function driver");
	117	MODULE_LICENSE("GPL v2");