124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2022 Richtek Technology Corp.
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* Author: ChiYuan Huang <cy_huang@richtek.com>
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*/
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#include <linux/i2c.h>
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#include <linux/kernel.h>
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/regmap.h>
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#define RT5120_REG_INTENABLE 0x1D
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#define RT5120_REG_INTSTAT 0x1E
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#define RT5120_REG_FZCMODE 0x44
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#define RT5120_INT_HOTDIE 0
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#define RT5120_INT_PWRKEY_REL 5
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#define RT5120_INT_PWRKEY_PRESS 6
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static const struct regmap_range rt5120_rd_yes_ranges[] = {
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regmap_reg_range(0x03, 0x13),
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regmap_reg_range(0x1c, 0x20),
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regmap_reg_range(0x44, 0x44),
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};
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static const struct regmap_range rt5120_wr_yes_ranges[] = {
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regmap_reg_range(0x06, 0x13),
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regmap_reg_range(0x1c, 0x20),
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regmap_reg_range(0x44, 0x44),
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};
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static const struct regmap_access_table rt5120_rd_table = {
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.yes_ranges = rt5120_rd_yes_ranges,
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.n_yes_ranges = ARRAY_SIZE(rt5120_rd_yes_ranges),
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};
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static const struct regmap_access_table rt5120_wr_table = {
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.yes_ranges = rt5120_wr_yes_ranges,
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.n_yes_ranges = ARRAY_SIZE(rt5120_wr_yes_ranges),
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};
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static const struct regmap_config rt5120_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = RT5120_REG_FZCMODE,
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.wr_table = &rt5120_wr_table,
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.rd_table = &rt5120_rd_table,
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};
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static const struct regmap_irq rt5120_irqs[] = {
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REGMAP_IRQ_REG_LINE(RT5120_INT_HOTDIE, 8),
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REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_REL, 8),
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REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_PRESS, 8),
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};
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static const struct regmap_irq_chip rt5120_irq_chip = {
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.name = "rt5120-pmic",
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.status_base = RT5120_REG_INTSTAT,
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.unmask_base = RT5120_REG_INTENABLE,
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.ack_base = RT5120_REG_INTSTAT,
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.use_ack = true,
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.num_regs = 1,
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.irqs = rt5120_irqs,
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.num_irqs = ARRAY_SIZE(rt5120_irqs),
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};
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static const struct resource rt5120_regulator_resources[] = {
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DEFINE_RES_IRQ(RT5120_INT_HOTDIE),
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};
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static const struct resource rt5120_pwrkey_resources[] = {
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DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_PRESS, "pwrkey-press"),
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DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_REL, "pwrkey-release"),
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};
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static const struct mfd_cell rt5120_devs[] = {
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MFD_CELL_RES("rt5120-regulator", rt5120_regulator_resources),
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MFD_CELL_OF("rt5120-pwrkey", rt5120_pwrkey_resources, NULL, 0, 0, "richtek,rt5120-pwrkey"),
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};
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static int rt5120_probe(struct i2c_client *i2c)
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{
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struct device *dev = &i2c->dev;
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struct regmap *regmap;
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struct regmap_irq_chip_data *irq_data;
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int ret;
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regmap = devm_regmap_init_i2c(i2c, &rt5120_regmap_config);
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if (IS_ERR(regmap))
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return dev_err_probe(dev, PTR_ERR(regmap),
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"Failed to init regmap\n");
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ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, IRQF_ONESHOT, 0,
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&rt5120_irq_chip, &irq_data);
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if (ret)
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return dev_err_probe(dev, ret, "Failed to add IRQ chip\n");
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return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, rt5120_devs,
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ARRAY_SIZE(rt5120_devs), NULL, 0,
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regmap_irq_get_domain(irq_data));
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}
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static const struct of_device_id rt5120_device_match_table[] = {
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{ .compatible = "richtek,rt5120" },
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{}
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};
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MODULE_DEVICE_TABLE(of, rt5120_device_match_table);
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static struct i2c_driver rt5120_driver = {
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.driver = {
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.name = "rt5120",
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.of_match_table = rt5120_device_match_table,
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},
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.probe = rt5120_probe,
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};
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module_i2c_driver(rt5120_driver);
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MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
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MODULE_DESCRIPTION("Richtek RT5120 I2C driver");
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MODULE_LICENSE("GPL v2");
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