| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * I2C driver for the X-Powers' Power Management ICs |
| * |
| * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC |
| * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature |
| * as well as configurable GPIOs. |
| * |
| * This driver supports the I2C variants. |
| * |
| * Copyright (C) 2014 Carlo Caione |
| * |
| * Author: Carlo Caione <[email protected]> |
| */ |
| |
| #include <linux/acpi.h> |
| #include <linux/err.h> |
| #include <linux/i2c.h> |
| #include <linux/module.h> |
| #include <linux/mfd/axp20x.h> |
| #include <linux/of.h> |
| #include <linux/regmap.h> |
| #include <linux/slab.h> |
| |
| static int axp20x_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct axp20x_dev *axp20x; |
| int ret; |
| |
| axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL); |
| if (!axp20x) |
| return -ENOMEM; |
| |
| axp20x->dev = &i2c->dev; |
| axp20x->irq = i2c->irq; |
| dev_set_drvdata(axp20x->dev, axp20x); |
| |
| ret = axp20x_match_device(axp20x); |
| if (ret) |
| return ret; |
| |
| axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg); |
| if (IS_ERR(axp20x->regmap)) { |
| ret = PTR_ERR(axp20x->regmap); |
| dev_err(&i2c->dev, "regmap init failed: %d\n", ret); |
| return ret; |
| } |
| |
| return axp20x_device_probe(axp20x); |
| } |
| |
| static int axp20x_i2c_remove(struct i2c_client *i2c) |
| { |
| struct axp20x_dev *axp20x = i2c_get_clientdata(i2c); |
| |
| axp20x_device_remove(axp20x); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_OF |
| static const struct of_device_id axp20x_i2c_of_match[] = { |
| { .compatible = "x-powers,axp152", .data = (void *)AXP152_ID }, |
| { .compatible = "x-powers,axp202", .data = (void *)AXP202_ID }, |
| { .compatible = "x-powers,axp209", .data = (void *)AXP209_ID }, |
| { .compatible = "x-powers,axp221", .data = (void *)AXP221_ID }, |
| { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID }, |
| { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID }, |
| { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match); |
| #endif |
| |
| static const struct i2c_device_id axp20x_i2c_id[] = { |
| { "axp152", 0 }, |
| { "axp202", 0 }, |
| { "axp209", 0 }, |
| { "axp221", 0 }, |
| { "axp223", 0 }, |
| { "axp803", 0 }, |
| { "axp806", 0 }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id); |
| |
| #ifdef CONFIG_ACPI |
| static const struct acpi_device_id axp20x_i2c_acpi_match[] = { |
| { |
| .id = "INT33F4", |
| .driver_data = AXP288_ID, |
| }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match); |
| #endif |
| |
| static struct i2c_driver axp20x_i2c_driver = { |
| .driver = { |
| .name = "axp20x-i2c", |
| .of_match_table = of_match_ptr(axp20x_i2c_of_match), |
| .acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match), |
| }, |
| .probe = axp20x_i2c_probe, |
| .remove = axp20x_i2c_remove, |
| .id_table = axp20x_i2c_id, |
| }; |
| |
| module_i2c_driver(axp20x_i2c_driver); |
| |
| MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X"); |
| MODULE_AUTHOR("Carlo Caione <[email protected]>"); |
| MODULE_LICENSE("GPL"); |
