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134 lines
3.4 KiB
134 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* MFD core driver for the Richtek RT5033. |
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* |
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* RT5033 comprises multiple sub-devices switcing charger, fuel gauge, |
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* flash LED, current source, LDO and BUCK regulators. |
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* |
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* Copyright (C) 2014 Samsung Electronics, Co., Ltd. |
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* Author: Beomho Seo <[email protected]> |
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*/ |
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#include <linux/err.h> |
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#include <linux/module.h> |
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#include <linux/interrupt.h> |
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#include <linux/of_device.h> |
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#include <linux/mfd/core.h> |
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#include <linux/mfd/rt5033.h> |
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#include <linux/mfd/rt5033-private.h> |
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static const struct regmap_irq rt5033_irqs[] = { |
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{ .mask = RT5033_PMIC_IRQ_BUCKOCP, }, |
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{ .mask = RT5033_PMIC_IRQ_BUCKLV, }, |
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{ .mask = RT5033_PMIC_IRQ_SAFELDOLV, }, |
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{ .mask = RT5033_PMIC_IRQ_LDOLV, }, |
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{ .mask = RT5033_PMIC_IRQ_OT, }, |
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{ .mask = RT5033_PMIC_IRQ_VDDA_UV, }, |
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}; |
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static const struct regmap_irq_chip rt5033_irq_chip = { |
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.name = "rt5033", |
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.status_base = RT5033_REG_PMIC_IRQ_STAT, |
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.mask_base = RT5033_REG_PMIC_IRQ_CTRL, |
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.mask_invert = true, |
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.num_regs = 1, |
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.irqs = rt5033_irqs, |
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.num_irqs = ARRAY_SIZE(rt5033_irqs), |
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}; |
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static const struct mfd_cell rt5033_devs[] = { |
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{ .name = "rt5033-regulator", }, |
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{ |
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.name = "rt5033-charger", |
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.of_compatible = "richtek,rt5033-charger", |
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}, { |
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.name = "rt5033-battery", |
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.of_compatible = "richtek,rt5033-battery", |
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}, { |
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.name = "rt5033-led", |
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.of_compatible = "richtek,rt5033-led", |
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}, |
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}; |
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static const struct regmap_config rt5033_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = RT5033_REG_END, |
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}; |
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static int rt5033_i2c_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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struct rt5033_dev *rt5033; |
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unsigned int dev_id; |
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int ret; |
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rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL); |
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if (!rt5033) |
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return -ENOMEM; |
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i2c_set_clientdata(i2c, rt5033); |
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rt5033->dev = &i2c->dev; |
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rt5033->irq = i2c->irq; |
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rt5033->wakeup = true; |
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rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config); |
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if (IS_ERR(rt5033->regmap)) { |
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dev_err(&i2c->dev, "Failed to allocate register map.\n"); |
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return PTR_ERR(rt5033->regmap); |
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} |
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ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id); |
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if (ret) { |
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dev_err(&i2c->dev, "Device not found\n"); |
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return -ENODEV; |
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} |
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dev_info(&i2c->dev, "Device found Device ID: %04x\n", dev_id); |
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ret = regmap_add_irq_chip(rt5033->regmap, rt5033->irq, |
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IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
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0, &rt5033_irq_chip, &rt5033->irq_data); |
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if (ret) { |
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dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n", |
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rt5033->irq, ret); |
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return ret; |
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} |
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ret = devm_mfd_add_devices(rt5033->dev, -1, rt5033_devs, |
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ARRAY_SIZE(rt5033_devs), NULL, 0, |
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regmap_irq_get_domain(rt5033->irq_data)); |
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if (ret < 0) { |
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dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n"); |
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return ret; |
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} |
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device_init_wakeup(rt5033->dev, rt5033->wakeup); |
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return 0; |
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} |
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static const struct i2c_device_id rt5033_i2c_id[] = { |
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{ "rt5033", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, rt5033_i2c_id); |
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static const struct of_device_id rt5033_dt_match[] = { |
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{ .compatible = "richtek,rt5033", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, rt5033_dt_match); |
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static struct i2c_driver rt5033_driver = { |
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.driver = { |
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.name = "rt5033", |
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.of_match_table = rt5033_dt_match, |
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}, |
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.probe = rt5033_i2c_probe, |
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.id_table = rt5033_i2c_id, |
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}; |
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module_i2c_driver(rt5033_driver); |
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MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver"); |
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MODULE_AUTHOR("Beomho Seo <[email protected]>"); |
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MODULE_LICENSE("GPL");
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