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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | // 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 <carlo@caione.org> */ #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); return axp20x_device_remove(axp20x); } 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,axp806", .data = (void *)AXP806_ID }, { }, }; MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match); static const struct i2c_device_id axp20x_i2c_id[] = { { "axp152", 0 }, { "axp202", 0 }, { "axp209", 0 }, { "axp221", 0 }, { "axp223", 0 }, { "axp806", 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id); static const struct acpi_device_id axp20x_i2c_acpi_match[] = { { .id = "INT33F4", .driver_data = AXP288_ID, }, { }, }; MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match); 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 <carlo@caione.org>"); MODULE_LICENSE("GPL"); |