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axp20x-i2c.c
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// 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)
{
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 void axp20x_i2c_remove(struct i2c_client *i2c)
{
struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);
axp20x_device_remove(axp20x);
}
#ifdef CONFIG_OF
static const struct of_device_id axp20x_i2c_of_match[] = {
{ .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
{ .compatible = "x-powers,axp192", .data = (void *)AXP192_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,axp313a", .data = (void *)AXP313A_ID },
{ .compatible = "x-powers,axp323", .data = (void *)AXP323_ID },
{ .compatible = "x-powers,axp717", .data = (void *)AXP717_ID },
{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
{ .compatible = "x-powers,axp15060", .data = (void *)AXP15060_ID },
{ },
};
MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
#endif
static const struct i2c_device_id axp20x_i2c_id[] = {
{ "axp152" },
{ "axp192" },
{ "axp202" },
{ "axp209" },
{ "axp221" },
{ "axp223" },
{ "axp313a" },
{ "axp717" },
{ "axp803" },
{ "axp806" },
{ "axp15060" },
{ }
};
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");