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The AXP717a is a PMIC chip produced by X-Powers, it can be connected to an I2C or RSB bus. It's a rather complete PMIC, with many regulators, interrupts, an ADC and battery charging functionality. It also offer USB type-C CC pin handling. Describe the regmap and the MFD bits, along with the registers exposed via I2C or RSB. This covers the regulator, interrupts and power key devices for now. Advertise the device using the new compatible string. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> Tested-by: Ryan Walklin <ryan@testtoast.com> Link: https://lore.kernel.org/r/20240310010211.28653-4-andre.przywara@arm.com Signed-off-by: Lee Jones <lee@kernel.org>
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* I2C driver for the X-Powers' Power Management ICs
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*
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* AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
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* converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
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* as well as configurable GPIOs.
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*
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* This driver supports the I2C variants.
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*
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* Copyright (C) 2014 Carlo Caione
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*
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* Author: Carlo Caione <carlo@caione.org>
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*/
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#include <linux/acpi.h>
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/mfd/axp20x.h>
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#include <linux/of.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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static int axp20x_i2c_probe(struct i2c_client *i2c)
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{
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struct axp20x_dev *axp20x;
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int ret;
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axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
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if (!axp20x)
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return -ENOMEM;
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axp20x->dev = &i2c->dev;
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axp20x->irq = i2c->irq;
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dev_set_drvdata(axp20x->dev, axp20x);
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ret = axp20x_match_device(axp20x);
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if (ret)
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return ret;
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axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg);
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if (IS_ERR(axp20x->regmap)) {
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ret = PTR_ERR(axp20x->regmap);
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dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
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return ret;
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}
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return axp20x_device_probe(axp20x);
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}
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static void axp20x_i2c_remove(struct i2c_client *i2c)
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{
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struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);
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axp20x_device_remove(axp20x);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id axp20x_i2c_of_match[] = {
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{ .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
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{ .compatible = "x-powers,axp192", .data = (void *)AXP192_ID },
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{ .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
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{ .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
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{ .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
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{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
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{ .compatible = "x-powers,axp313a", .data = (void *)AXP313A_ID },
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{ .compatible = "x-powers,axp717", .data = (void *)AXP717_ID },
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{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
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{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
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{ .compatible = "x-powers,axp15060", .data = (void *)AXP15060_ID },
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{ },
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};
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MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
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#endif
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static const struct i2c_device_id axp20x_i2c_id[] = {
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{ "axp152", 0 },
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{ "axp192", 0 },
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{ "axp202", 0 },
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{ "axp209", 0 },
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{ "axp221", 0 },
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{ "axp223", 0 },
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{ "axp313a", 0 },
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{ "axp717", 0 },
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{ "axp803", 0 },
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{ "axp806", 0 },
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{ "axp15060", 0 },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
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#ifdef CONFIG_ACPI
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static const struct acpi_device_id axp20x_i2c_acpi_match[] = {
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{
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.id = "INT33F4",
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.driver_data = AXP288_ID,
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},
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{ },
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};
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MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match);
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#endif
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static struct i2c_driver axp20x_i2c_driver = {
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.driver = {
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.name = "axp20x-i2c",
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.of_match_table = of_match_ptr(axp20x_i2c_of_match),
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.acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match),
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},
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.probe = axp20x_i2c_probe,
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.remove = axp20x_i2c_remove,
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.id_table = axp20x_i2c_id,
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};
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module_i2c_driver(axp20x_i2c_driver);
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MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X");
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MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
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MODULE_LICENSE("GPL");
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