[mirror_ubuntu-hirsute-kernel.git] / drivers / mfd / max77843.c

// SPDX-License-Identifier: GPL-2.0+
//
// MFD core driver for the Maxim MAX77843
//
// Copyright (C) 2015 Samsung Electronics
// Author: Jaewon Kim <jaewon02.kim@samsung.com>
// Author: Beomho Seo <beomho.seo@samsung.com>

#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max77693-common.h>
#include <linux/mfd/max77843-private.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>

static const struct mfd_cell max77843_devs[] = {
	{
		.name = "max77843-muic",
		.of_compatible = "maxim,max77843-muic",
	}, {
		.name = "max77843-regulator",
		.of_compatible = "maxim,max77843-regulator",
	}, {
		.name = "max77843-charger",
		.of_compatible = "maxim,max77843-charger"
	}, {
		.name = "max77843-fuelgauge",
		.of_compatible = "maxim,max77843-fuelgauge",
	}, {
		.name = "max77843-haptic",
		.of_compatible = "maxim,max77843-haptic",
	},
};

static const struct regmap_config max77843_charger_regmap_config = {
	.reg_bits	= 8,
	.val_bits	= 8,
	.max_register	= MAX77843_CHG_REG_END,
};

static const struct regmap_config max77843_regmap_config = {
	.reg_bits	= 8,
	.val_bits	= 8,
	.max_register	= MAX77843_SYS_REG_END,
};

static const struct regmap_irq max77843_irqs[] = {
	/* TOPSYS interrupts */
	{ .reg_offset = 0, .mask = MAX77843_SYS_IRQ_SYSUVLO_INT, },
	{ .reg_offset = 0, .mask = MAX77843_SYS_IRQ_SYSOVLO_INT, },
	{ .reg_offset = 0, .mask = MAX77843_SYS_IRQ_TSHDN_INT, },
	{ .reg_offset = 0, .mask = MAX77843_SYS_IRQ_TM_INT, },
};

static const struct regmap_irq_chip max77843_irq_chip = {
	.name		= "max77843",
	.status_base	= MAX77843_SYS_REG_SYSINTSRC,
	.mask_base	= MAX77843_SYS_REG_SYSINTMASK,
	.mask_invert	= false,
	.num_regs	= 1,
	.irqs		= max77843_irqs,
	.num_irqs	= ARRAY_SIZE(max77843_irqs),
};

/* Charger and Charger regulator use same regmap. */
static int max77843_chg_init(struct max77693_dev *max77843)
{
	int ret;

	max77843->i2c_chg = i2c_new_dummy_device(max77843->i2c->adapter, I2C_ADDR_CHG);
	if (IS_ERR(max77843->i2c_chg)) {
		dev_err(&max77843->i2c->dev,
				"Cannot allocate I2C device for Charger\n");
		return PTR_ERR(max77843->i2c_chg);
	}
	i2c_set_clientdata(max77843->i2c_chg, max77843);

	max77843->regmap_chg = devm_regmap_init_i2c(max77843->i2c_chg,
			&max77843_charger_regmap_config);
	if (IS_ERR(max77843->regmap_chg)) {
		ret = PTR_ERR(max77843->regmap_chg);
		goto err_chg_i2c;
	}

	return 0;

err_chg_i2c:
	i2c_unregister_device(max77843->i2c_chg);

	return ret;
}

static int max77843_probe(struct i2c_client *i2c,
			  const struct i2c_device_id *id)
{
	struct max77693_dev *max77843;
	unsigned int reg_data;
	int ret;

	max77843 = devm_kzalloc(&i2c->dev, sizeof(*max77843), GFP_KERNEL);
	if (!max77843)
		return -ENOMEM;

	i2c_set_clientdata(i2c, max77843);
	max77843->dev = &i2c->dev;
	max77843->i2c = i2c;
	max77843->irq = i2c->irq;
	max77843->type = id->driver_data;

	max77843->regmap = devm_regmap_init_i2c(i2c,
			&max77843_regmap_config);
	if (IS_ERR(max77843->regmap)) {
		dev_err(&i2c->dev, "Failed to allocate topsys register map\n");
		return PTR_ERR(max77843->regmap);
	}

	ret = regmap_add_irq_chip(max77843->regmap, max77843->irq,
			IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED,
			0, &max77843_irq_chip, &max77843->irq_data_topsys);
	if (ret) {
		dev_err(&i2c->dev, "Failed to add TOPSYS IRQ chip\n");
		return ret;
	}

	ret = regmap_read(max77843->regmap,
			MAX77843_SYS_REG_PMICID, &reg_data);
	if (ret < 0) {
		dev_err(&i2c->dev, "Failed to read PMIC ID\n");
		goto err_pmic_id;
	}
	dev_info(&i2c->dev, "device ID: 0x%x\n", reg_data);

	ret = max77843_chg_init(max77843);
	if (ret) {
		dev_err(&i2c->dev, "Failed to init Charger\n");
		goto err_pmic_id;
	}

	ret = regmap_update_bits(max77843->regmap,
				 MAX77843_SYS_REG_INTSRCMASK,
				 MAX77843_INTSRC_MASK_MASK,
				 (unsigned int)~MAX77843_INTSRC_MASK_MASK);
	if (ret < 0) {
		dev_err(&i2c->dev, "Failed to unmask interrupt source\n");
		goto err_pmic_id;
	}

	ret = mfd_add_devices(max77843->dev, -1, max77843_devs,
			      ARRAY_SIZE(max77843_devs), NULL, 0, NULL);
	if (ret < 0) {
		dev_err(&i2c->dev, "Failed to add mfd device\n");
		goto err_pmic_id;
	}

	device_init_wakeup(max77843->dev, true);

	return 0;

err_pmic_id:
	regmap_del_irq_chip(max77843->irq, max77843->irq_data_topsys);

	return ret;
}

static const struct of_device_id max77843_dt_match[] = {
	{ .compatible = "maxim,max77843", },
	{ },
};

static const struct i2c_device_id max77843_id[] = {
	{ "max77843", TYPE_MAX77843, },
	{ },
};

static int __maybe_unused max77843_suspend(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max77693_dev *max77843 = i2c_get_clientdata(i2c);

	disable_irq(max77843->irq);
	if (device_may_wakeup(dev))
		enable_irq_wake(max77843->irq);

	return 0;
}

static int __maybe_unused max77843_resume(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max77693_dev *max77843 = i2c_get_clientdata(i2c);

	if (device_may_wakeup(dev))
		disable_irq_wake(max77843->irq);
	enable_irq(max77843->irq);

	return 0;
}

static SIMPLE_DEV_PM_OPS(max77843_pm, max77843_suspend, max77843_resume);

static struct i2c_driver max77843_i2c_driver = {
	.driver	= {
		.name = "max77843",
		.pm = &max77843_pm,
		.of_match_table = max77843_dt_match,
		.suppress_bind_attrs = true,
	},
	.probe = max77843_probe,
	.id_table = max77843_id,
};

static int __init max77843_i2c_init(void)
{
	return i2c_add_driver(&max77843_i2c_driver);
}
subsys_initcall(max77843_i2c_init);
Commit	Line	Data
d7d8d7a2 KK	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// MFD core driver for the Maxim MAX77843
	4	//
	5	// Copyright (C) 2015 Samsung Electronics
	6	// Author: Jaewon Kim <jaewon02.kim@samsung.com>
	7	// Author: Beomho Seo <beomho.seo@samsung.com>
c7f585fe JK	8
	9	#include <linux/err.h>
	10	#include <linux/i2c.h>
	11	#include <linux/init.h>
	12	#include <linux/interrupt.h>
c7f585fe	13	#include <linux/mfd/core.h>
bc1aadc1	14	#include <linux/mfd/max77693-common.h>
c7f585fe JK	15	#include <linux/mfd/max77843-private.h>
	16	#include <linux/of_device.h>
	17	#include <linux/platform_device.h>
	18
	19	static const struct mfd_cell max77843_devs[] = {
	20	{
	21	.name = "max77843-muic",
	22	.of_compatible = "maxim,max77843-muic",
	23	}, {
	24	.name = "max77843-regulator",
	25	.of_compatible = "maxim,max77843-regulator",
	26	}, {
	27	.name = "max77843-charger",
	28	.of_compatible = "maxim,max77843-charger"
	29	}, {
	30	.name = "max77843-fuelgauge",
	31	.of_compatible = "maxim,max77843-fuelgauge",
	32	}, {
	33	.name = "max77843-haptic",
	34	.of_compatible = "maxim,max77843-haptic",
	35	},
	36	};
	37
	38	static const struct regmap_config max77843_charger_regmap_config = {
	39	.reg_bits = 8,
	40	.val_bits = 8,
	41	.max_register = MAX77843_CHG_REG_END,
	42	};
	43
	44	static const struct regmap_config max77843_regmap_config = {
	45	.reg_bits = 8,
	46	.val_bits = 8,
	47	.max_register = MAX77843_SYS_REG_END,
	48	};
	49
	50	static const struct regmap_irq max77843_irqs[] = {
	51	/* TOPSYS interrupts */
	52	{ .reg_offset = 0, .mask = MAX77843_SYS_IRQ_SYSUVLO_INT, },
	53	{ .reg_offset = 0, .mask = MAX77843_SYS_IRQ_SYSOVLO_INT, },
	54	{ .reg_offset = 0, .mask = MAX77843_SYS_IRQ_TSHDN_INT, },
	55	{ .reg_offset = 0, .mask = MAX77843_SYS_IRQ_TM_INT, },
	56	};
	57
	58	static const struct regmap_irq_chip max77843_irq_chip = {
	59	.name = "max77843",
	60	.status_base = MAX77843_SYS_REG_SYSINTSRC,
	61	.mask_base = MAX77843_SYS_REG_SYSINTMASK,
	62	.mask_invert = false,
	63	.num_regs = 1,
	64	.irqs = max77843_irqs,
	65	.num_irqs = ARRAY_SIZE(max77843_irqs),
	66	};
	67
	68	/* Charger and Charger regulator use same regmap. */
bc1aadc1	69	static int max77843_chg_init(struct max77693_dev *max77843)
c7f585fe JK	70	{
	71	int ret;
	72
0005a9e1 WS	73	max77843->i2c_chg = i2c_new_dummy_device(max77843->i2c->adapter, I2C_ADDR_CHG);
0005a9e1 WS	74	if (IS_ERR(max77843->i2c_chg)) {
c7f585fe JK	75	dev_err(&max77843->i2c->dev,
c7f585fe JK	76	"Cannot allocate I2C device for Charger\n");
0005a9e1	77	return PTR_ERR(max77843->i2c_chg);
c7f585fe JK	78	}
	79	i2c_set_clientdata(max77843->i2c_chg, max77843);
	80
	81	max77843->regmap_chg = devm_regmap_init_i2c(max77843->i2c_chg,
	82	&max77843_charger_regmap_config);
	83	if (IS_ERR(max77843->regmap_chg)) {
	84	ret = PTR_ERR(max77843->regmap_chg);
	85	goto err_chg_i2c;
	86	}
	87
	88	return 0;
	89
	90	err_chg_i2c:
	91	i2c_unregister_device(max77843->i2c_chg);
	92
	93	return ret;
	94	}
	95
	96	static int max77843_probe(struct i2c_client *i2c,
	97	const struct i2c_device_id *id)
	98	{
bc1aadc1	99	struct max77693_dev *max77843;
c7f585fe JK	100	unsigned int reg_data;
	101	int ret;
	102
	103	max77843 = devm_kzalloc(&i2c->dev, sizeof(*max77843), GFP_KERNEL);
	104	if (!max77843)
	105	return -ENOMEM;
	106
	107	i2c_set_clientdata(i2c, max77843);
	108	max77843->dev = &i2c->dev;
	109	max77843->i2c = i2c;
	110	max77843->irq = i2c->irq;
bc1aadc1	111	max77843->type = id->driver_data;
c7f585fe JK	112
	113	max77843->regmap = devm_regmap_init_i2c(i2c,
	114	&max77843_regmap_config);
	115	if (IS_ERR(max77843->regmap)) {
	116	dev_err(&i2c->dev, "Failed to allocate topsys register map\n");
	117	return PTR_ERR(max77843->regmap);
	118	}
	119
	120	ret = regmap_add_irq_chip(max77843->regmap, max77843->irq,
	121	IRQF_TRIGGER_LOW \| IRQF_ONESHOT \| IRQF_SHARED,
bc1aadc1	122	0, &max77843_irq_chip, &max77843->irq_data_topsys);
c7f585fe JK	123	if (ret) {
	124	dev_err(&i2c->dev, "Failed to add TOPSYS IRQ chip\n");
	125	return ret;
	126	}
	127
	128	ret = regmap_read(max77843->regmap,
	129	MAX77843_SYS_REG_PMICID, &reg_data);
	130	if (ret < 0) {
	131	dev_err(&i2c->dev, "Failed to read PMIC ID\n");
	132	goto err_pmic_id;
	133	}
	134	dev_info(&i2c->dev, "device ID: 0x%x\n", reg_data);
	135
	136	ret = max77843_chg_init(max77843);
	137	if (ret) {
	138	dev_err(&i2c->dev, "Failed to init Charger\n");
	139	goto err_pmic_id;
	140	}
	141
	142	ret = regmap_update_bits(max77843->regmap,
	143	MAX77843_SYS_REG_INTSRCMASK,
	144	MAX77843_INTSRC_MASK_MASK,
	145	(unsigned int)~MAX77843_INTSRC_MASK_MASK);
	146	if (ret < 0) {
	147	dev_err(&i2c->dev, "Failed to unmask interrupt source\n");
	148	goto err_pmic_id;
	149	}
	150
	151	ret = mfd_add_devices(max77843->dev, -1, max77843_devs,
	152	ARRAY_SIZE(max77843_devs), NULL, 0, NULL);
	153	if (ret < 0) {
	154	dev_err(&i2c->dev, "Failed to add mfd device\n");
	155	goto err_pmic_id;
	156	}
	157
	158	device_init_wakeup(max77843->dev, true);
	159
	160	return 0;
	161
	162	err_pmic_id:
bc1aadc1	163	regmap_del_irq_chip(max77843->irq, max77843->irq_data_topsys);
c7f585fe JK	164
	165	return ret;
	166	}
	167
c7f585fe JK	168	static const struct of_device_id max77843_dt_match[] = {
	169	{ .compatible = "maxim,max77843", },
	170	{ },
	171	};
	172
	173	static const struct i2c_device_id max77843_id[] = {
bc1aadc1	174	{ "max77843", TYPE_MAX77843, },
c7f585fe JK	175	{ },
c7f585fe JK	176	};
c7f585fe JK	177
	178	static int __maybe_unused max77843_suspend(struct device *dev)
	179	{
1b5420e1	180	struct i2c_client *i2c = to_i2c_client(dev);
bc1aadc1	181	struct max77693_dev *max77843 = i2c_get_clientdata(i2c);
c7f585fe JK	182
	183	disable_irq(max77843->irq);
	184	if (device_may_wakeup(dev))
	185	enable_irq_wake(max77843->irq);
	186
	187	return 0;
	188	}
	189
	190	static int __maybe_unused max77843_resume(struct device *dev)
	191	{
1b5420e1	192	struct i2c_client *i2c = to_i2c_client(dev);
bc1aadc1	193	struct max77693_dev *max77843 = i2c_get_clientdata(i2c);
c7f585fe JK	194
	195	if (device_may_wakeup(dev))
	196	disable_irq_wake(max77843->irq);
	197	enable_irq(max77843->irq);
	198
	199	return 0;
	200	}
	201
	202	static SIMPLE_DEV_PM_OPS(max77843_pm, max77843_suspend, max77843_resume);
	203
	204	static struct i2c_driver max77843_i2c_driver = {
	205	.driver = {
	206	.name = "max77843",
	207	.pm = &max77843_pm,
	208	.of_match_table = max77843_dt_match,
38f70da3	209	.suppress_bind_attrs = true,
c7f585fe JK	210	},
c7f585fe JK	211	.probe = max77843_probe,
c7f585fe JK	212	.id_table = max77843_id,
	213	};
	214
	215	static int __init max77843_i2c_init(void)
	216	{
	217	return i2c_add_driver(&max77843_i2c_driver);
	218	}
	219	subsys_initcall(max77843_i2c_init);