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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * I2C driver for the X-Powers' Power Management ICs4 *5 * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC6 * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature7 * as well as configurable GPIOs.8 *9 * This driver supports the I2C variants.10 *11 * Copyright (C) 2014 Carlo Caione12 *13 * Author: Carlo Caione <carlo@caione.org>14 */15 16#include <linux/acpi.h>17#include <linux/err.h>18#include <linux/i2c.h>19#include <linux/module.h>20#include <linux/mfd/axp20x.h>21#include <linux/of.h>22#include <linux/regmap.h>23#include <linux/slab.h>24 25static int axp20x_i2c_probe(struct i2c_client *i2c)26{27 struct axp20x_dev *axp20x;28 int ret;29 30 axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);31 if (!axp20x)32 return -ENOMEM;33 34 axp20x->dev = &i2c->dev;35 axp20x->irq = i2c->irq;36 dev_set_drvdata(axp20x->dev, axp20x);37 38 ret = axp20x_match_device(axp20x);39 if (ret)40 return ret;41 42 axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg);43 if (IS_ERR(axp20x->regmap)) {44 ret = PTR_ERR(axp20x->regmap);45 dev_err(&i2c->dev, "regmap init failed: %d\n", ret);46 return ret;47 }48 49 return axp20x_device_probe(axp20x);50}51 52static void axp20x_i2c_remove(struct i2c_client *i2c)53{54 struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);55 56 axp20x_device_remove(axp20x);57}58 59#ifdef CONFIG_OF60static const struct of_device_id axp20x_i2c_of_match[] = {61 { .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },62 { .compatible = "x-powers,axp192", .data = (void *)AXP192_ID },63 { .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },64 { .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },65 { .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },66 { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },67 { .compatible = "x-powers,axp313a", .data = (void *)AXP313A_ID },68 { .compatible = "x-powers,axp717", .data = (void *)AXP717_ID },69 { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },70 { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },71 { .compatible = "x-powers,axp15060", .data = (void *)AXP15060_ID },72 { },73};74MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);75#endif76 77static const struct i2c_device_id axp20x_i2c_id[] = {78 { "axp152" },79 { "axp192" },80 { "axp202" },81 { "axp209" },82 { "axp221" },83 { "axp223" },84 { "axp313a" },85 { "axp717" },86 { "axp803" },87 { "axp806" },88 { "axp15060" },89 { }90};91MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);92 93#ifdef CONFIG_ACPI94static const struct acpi_device_id axp20x_i2c_acpi_match[] = {95 {96 .id = "INT33F4",97 .driver_data = AXP288_ID,98 },99 { },100};101MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match);102#endif103 104static struct i2c_driver axp20x_i2c_driver = {105 .driver = {106 .name = "axp20x-i2c",107 .of_match_table = of_match_ptr(axp20x_i2c_of_match),108 .acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match),109 },110 .probe = axp20x_i2c_probe,111 .remove = axp20x_i2c_remove,112 .id_table = axp20x_i2c_id,113};114 115module_i2c_driver(axp20x_i2c_driver);116 117MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X");118MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");119MODULE_LICENSE("GPL");120