// SPDX-License-Identifier: GPL-2.0-only/* * MFD core driver for the Richtek RT5033. * * RT5033 comprises multiple sub-devices switcing charger, fuel gauge, * flash LED, current source, LDO and BUCK regulators. * * Copyright (C) 2014 Samsung Electronics, Co., Ltd. * Author: Beomho Seo <beomho.seo@samsung.com> */ #include <linux/err.h>#include <linux/module.h>#include <linux/interrupt.h>#include <linux/mfd/core.h>#include <linux/mfd/rt5033.h>#include <linux/mfd/rt5033-private.h> static const struct regmap_irq rt5033_irqs[] = {	{ .mask = RT5033_PMIC_IRQ_BUCKOCP, },	{ .mask = RT5033_PMIC_IRQ_BUCKLV, },	{ .mask = RT5033_PMIC_IRQ_SAFELDOLV, },	{ .mask = RT5033_PMIC_IRQ_LDOLV, },	{ .mask = RT5033_PMIC_IRQ_OT, },	{ .mask = RT5033_PMIC_IRQ_VDDA_UV, },}; static const struct regmap_irq_chip rt5033_irq_chip = {	.name		= "rt5033",	.status_base	= RT5033_REG_PMIC_IRQ_STAT,	.unmask_base	= RT5033_REG_PMIC_IRQ_CTRL,	.num_regs	= 1,	.irqs		= rt5033_irqs,	.num_irqs	= ARRAY_SIZE(rt5033_irqs),}; static const struct mfd_cell rt5033_devs[] = {	{ .name = "rt5033-regulator", },	{		.name = "rt5033-charger",		.of_compatible = "richtek,rt5033-charger",	}, {		.name = "rt5033-led",		.of_compatible = "richtek,rt5033-led",	},}; static const struct regmap_config rt5033_regmap_config = {	.reg_bits	= 8,	.val_bits	= 8,	.max_register	= RT5033_REG_END,}; static int rt5033_i2c_probe(struct i2c_client *i2c){	struct rt5033_dev *rt5033;	unsigned int dev_id, chip_rev;	int ret; 	rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL);	if (!rt5033)		return -ENOMEM; 	i2c_set_clientdata(i2c, rt5033);	rt5033->dev = &i2c->dev;	rt5033->irq = i2c->irq;	rt5033->wakeup = true; 	rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config);	if (IS_ERR(rt5033->regmap)) {		dev_err(&i2c->dev, "Failed to allocate register map.\n");		return PTR_ERR(rt5033->regmap);	} 	ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id);	if (ret) {		dev_err(&i2c->dev, "Device not found\n");		return -ENODEV;	}	chip_rev = dev_id & RT5033_CHIP_REV_MASK;	dev_info(&i2c->dev, "Device found (rev. %d)\n", chip_rev); 	ret = devm_regmap_add_irq_chip(rt5033->dev, rt5033->regmap,			rt5033->irq, IRQF_TRIGGER_FALLING | IRQF_ONESHOT,			0, &rt5033_irq_chip, &rt5033->irq_data);	if (ret) {		dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",							rt5033->irq, ret);		return ret;	} 	ret = devm_mfd_add_devices(rt5033->dev, -1, rt5033_devs,				   ARRAY_SIZE(rt5033_devs), NULL, 0,				   regmap_irq_get_domain(rt5033->irq_data));	if (ret < 0) {		dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n");		return ret;	} 	if (rt5033->wakeup) {		ret = devm_device_init_wakeup(rt5033->dev);		if (ret)			return dev_err_probe(rt5033->dev, ret, "Failed to init wakeup\n");	} 	return 0;} static const struct i2c_device_id rt5033_i2c_id[] = {	{ "rt5033", },	{ }};MODULE_DEVICE_TABLE(i2c, rt5033_i2c_id); static const struct of_device_id rt5033_dt_match[] = {	{ .compatible = "richtek,rt5033", },	{ }};MODULE_DEVICE_TABLE(of, rt5033_dt_match); static struct i2c_driver rt5033_driver = {	.driver = {		.name = "rt5033",		.of_match_table = rt5033_dt_match,	},	.probe = rt5033_i2c_probe,	.id_table = rt5033_i2c_id,};module_i2c_driver(rt5033_driver); MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver");MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");MODULE_LICENSE("GPL");