^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * MFD core driver for the Richtek RT5033.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * RT5033 comprises multiple sub-devices switcing charger, fuel gauge,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * flash LED, current source, LDO and BUCK regulators.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Author: Beomho Seo <beomho.seo@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mfd/rt5033.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mfd/rt5033-private.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static const struct regmap_irq rt5033_irqs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) { .mask = RT5033_PMIC_IRQ_BUCKOCP, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) { .mask = RT5033_PMIC_IRQ_BUCKLV, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) { .mask = RT5033_PMIC_IRQ_SAFELDOLV, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) { .mask = RT5033_PMIC_IRQ_LDOLV, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) { .mask = RT5033_PMIC_IRQ_OT, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) { .mask = RT5033_PMIC_IRQ_VDDA_UV, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static const struct regmap_irq_chip rt5033_irq_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) .name = "rt5033",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .status_base = RT5033_REG_PMIC_IRQ_STAT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) .mask_base = RT5033_REG_PMIC_IRQ_CTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) .mask_invert = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) .num_regs = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) .irqs = rt5033_irqs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) .num_irqs = ARRAY_SIZE(rt5033_irqs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static const struct mfd_cell rt5033_devs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) { .name = "rt5033-regulator", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .name = "rt5033-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) .of_compatible = "richtek,rt5033-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) .name = "rt5033-battery",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) .of_compatible = "richtek,rt5033-battery",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) .name = "rt5033-led",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .of_compatible = "richtek,rt5033-led",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static const struct regmap_config rt5033_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) .val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) .max_register = RT5033_REG_END,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static int rt5033_i2c_probe(struct i2c_client *i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct rt5033_dev *rt5033;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned int dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (!rt5033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) i2c_set_clientdata(i2c, rt5033);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) rt5033->dev = &i2c->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) rt5033->irq = i2c->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) rt5033->wakeup = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (IS_ERR(rt5033->regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) dev_err(&i2c->dev, "Failed to allocate register map.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return PTR_ERR(rt5033->regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) dev_err(&i2c->dev, "Device not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) dev_info(&i2c->dev, "Device found Device ID: %04x\n", dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ret = regmap_add_irq_chip(rt5033->regmap, rt5033->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) 0, &rt5033_irq_chip, &rt5033->irq_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) rt5033->irq, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ret = devm_mfd_add_devices(rt5033->dev, -1, rt5033_devs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ARRAY_SIZE(rt5033_devs), NULL, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) regmap_irq_get_domain(rt5033->irq_data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) device_init_wakeup(rt5033->dev, rt5033->wakeup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static const struct i2c_device_id rt5033_i2c_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) { "rt5033", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) MODULE_DEVICE_TABLE(i2c, rt5033_i2c_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static const struct of_device_id rt5033_dt_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) { .compatible = "richtek,rt5033", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) MODULE_DEVICE_TABLE(of, rt5033_dt_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static struct i2c_driver rt5033_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .name = "rt5033",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .of_match_table = of_match_ptr(rt5033_dt_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .probe = rt5033_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .id_table = rt5033_i2c_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) module_i2c_driver(rt5033_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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