| // 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/of_device.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, |
| .mask_base = RT5033_REG_PMIC_IRQ_CTRL, |
| .mask_invert = true, |
| .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, |
| const struct i2c_device_id *id) |
| { |
| struct rt5033_dev *rt5033; |
| unsigned int dev_id; |
| 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; |
| } |
| dev_info(&i2c->dev, "Device found Device ID: %04x\n", dev_id); |
| |
| ret = regmap_add_irq_chip(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; |
| } |
| |
| device_init_wakeup(rt5033->dev, rt5033->wakeup); |
| |
| 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 = of_match_ptr(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"); |