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

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Broadcom BCM590xx PMU
 *
 * Copyright 2014 Linaro Limited
 * Author: Matt Porter <mporter@linaro.org>
 */

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