1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 24fd41151SChen-Yu Tsai /* 34fd41151SChen-Yu Tsai * I2C driver for the X-Powers' Power Management ICs 44fd41151SChen-Yu Tsai * 54fd41151SChen-Yu Tsai * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC 64fd41151SChen-Yu Tsai * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature 74fd41151SChen-Yu Tsai * as well as configurable GPIOs. 84fd41151SChen-Yu Tsai * 94fd41151SChen-Yu Tsai * This driver supports the I2C variants. 104fd41151SChen-Yu Tsai * 114fd41151SChen-Yu Tsai * Copyright (C) 2014 Carlo Caione 124fd41151SChen-Yu Tsai * 134fd41151SChen-Yu Tsai * Author: Carlo Caione <carlo@caione.org> 144fd41151SChen-Yu Tsai */ 154fd41151SChen-Yu Tsai 164fd41151SChen-Yu Tsai #include <linux/acpi.h> 174fd41151SChen-Yu Tsai #include <linux/err.h> 184fd41151SChen-Yu Tsai #include <linux/i2c.h> 194fd41151SChen-Yu Tsai #include <linux/module.h> 204fd41151SChen-Yu Tsai #include <linux/mfd/axp20x.h> 214fd41151SChen-Yu Tsai #include <linux/of.h> 224fd41151SChen-Yu Tsai #include <linux/regmap.h> 234fd41151SChen-Yu Tsai #include <linux/slab.h> 244fd41151SChen-Yu Tsai 252f2455dbSUwe Kleine-König static int axp20x_i2c_probe(struct i2c_client *i2c) 264fd41151SChen-Yu Tsai { 274fd41151SChen-Yu Tsai struct axp20x_dev *axp20x; 284fd41151SChen-Yu Tsai int ret; 294fd41151SChen-Yu Tsai 304fd41151SChen-Yu Tsai axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL); 314fd41151SChen-Yu Tsai if (!axp20x) 324fd41151SChen-Yu Tsai return -ENOMEM; 334fd41151SChen-Yu Tsai 344fd41151SChen-Yu Tsai axp20x->dev = &i2c->dev; 354fd41151SChen-Yu Tsai axp20x->irq = i2c->irq; 364fd41151SChen-Yu Tsai dev_set_drvdata(axp20x->dev, axp20x); 374fd41151SChen-Yu Tsai 384fd41151SChen-Yu Tsai ret = axp20x_match_device(axp20x); 394fd41151SChen-Yu Tsai if (ret) 404fd41151SChen-Yu Tsai return ret; 414fd41151SChen-Yu Tsai 424fd41151SChen-Yu Tsai axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg); 434fd41151SChen-Yu Tsai if (IS_ERR(axp20x->regmap)) { 444fd41151SChen-Yu Tsai ret = PTR_ERR(axp20x->regmap); 454fd41151SChen-Yu Tsai dev_err(&i2c->dev, "regmap init failed: %d\n", ret); 464fd41151SChen-Yu Tsai return ret; 474fd41151SChen-Yu Tsai } 484fd41151SChen-Yu Tsai 494fd41151SChen-Yu Tsai return axp20x_device_probe(axp20x); 504fd41151SChen-Yu Tsai } 514fd41151SChen-Yu Tsai 52ed5c2f5fSUwe Kleine-König static void axp20x_i2c_remove(struct i2c_client *i2c) 534fd41151SChen-Yu Tsai { 544fd41151SChen-Yu Tsai struct axp20x_dev *axp20x = i2c_get_clientdata(i2c); 554fd41151SChen-Yu Tsai 563c15e00eSUwe Kleine-König axp20x_device_remove(axp20x); 574fd41151SChen-Yu Tsai } 584fd41151SChen-Yu Tsai 5906b324fcSKrzysztof Kozlowski #ifdef CONFIG_OF 604fd41151SChen-Yu Tsai static const struct of_device_id axp20x_i2c_of_match[] = { 614fd41151SChen-Yu Tsai { .compatible = "x-powers,axp152", .data = (void *)AXP152_ID }, 624fd41151SChen-Yu Tsai { .compatible = "x-powers,axp202", .data = (void *)AXP202_ID }, 634fd41151SChen-Yu Tsai { .compatible = "x-powers,axp209", .data = (void *)AXP209_ID }, 644fd41151SChen-Yu Tsai { .compatible = "x-powers,axp221", .data = (void *)AXP221_ID }, 654f799e47SMaxime Ripard { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID }, 6685c30785SFrank Lee { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID }, 6799e19b7cSChen-Yu Tsai { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID }, 68*e0f8ad2aSShengyu Qu { .compatible = "x-powers,axp15060", .data = (void *)AXP15060_ID }, 694fd41151SChen-Yu Tsai { }, 704fd41151SChen-Yu Tsai }; 714fd41151SChen-Yu Tsai MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match); 7206b324fcSKrzysztof Kozlowski #endif 734fd41151SChen-Yu Tsai 744fd41151SChen-Yu Tsai static const struct i2c_device_id axp20x_i2c_id[] = { 7541751b03SHans de Goede { "axp152", 0 }, 7641751b03SHans de Goede { "axp202", 0 }, 7741751b03SHans de Goede { "axp209", 0 }, 7841751b03SHans de Goede { "axp221", 0 }, 794f799e47SMaxime Ripard { "axp223", 0 }, 8085c30785SFrank Lee { "axp803", 0 }, 8199e19b7cSChen-Yu Tsai { "axp806", 0 }, 82*e0f8ad2aSShengyu Qu { "axp15060", 0 }, 834fd41151SChen-Yu Tsai { }, 844fd41151SChen-Yu Tsai }; 854fd41151SChen-Yu Tsai MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id); 864fd41151SChen-Yu Tsai 8721b2998dSLee Jones #ifdef CONFIG_ACPI 884fd41151SChen-Yu Tsai static const struct acpi_device_id axp20x_i2c_acpi_match[] = { 894fd41151SChen-Yu Tsai { 904fd41151SChen-Yu Tsai .id = "INT33F4", 914fd41151SChen-Yu Tsai .driver_data = AXP288_ID, 924fd41151SChen-Yu Tsai }, 934fd41151SChen-Yu Tsai { }, 944fd41151SChen-Yu Tsai }; 954fd41151SChen-Yu Tsai MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match); 9621b2998dSLee Jones #endif 974fd41151SChen-Yu Tsai 984fd41151SChen-Yu Tsai static struct i2c_driver axp20x_i2c_driver = { 994fd41151SChen-Yu Tsai .driver = { 1004fd41151SChen-Yu Tsai .name = "axp20x-i2c", 1014fd41151SChen-Yu Tsai .of_match_table = of_match_ptr(axp20x_i2c_of_match), 1024fd41151SChen-Yu Tsai .acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match), 1034fd41151SChen-Yu Tsai }, 1042f2455dbSUwe Kleine-König .probe_new = axp20x_i2c_probe, 1054fd41151SChen-Yu Tsai .remove = axp20x_i2c_remove, 1064fd41151SChen-Yu Tsai .id_table = axp20x_i2c_id, 1074fd41151SChen-Yu Tsai }; 1084fd41151SChen-Yu Tsai 1094fd41151SChen-Yu Tsai module_i2c_driver(axp20x_i2c_driver); 1104fd41151SChen-Yu Tsai 1114fd41151SChen-Yu Tsai MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X"); 1124fd41151SChen-Yu Tsai MODULE_AUTHOR("Carlo Caione <carlo@caione.org>"); 1134fd41151SChen-Yu Tsai MODULE_LICENSE("GPL"); 114