45 lines · c
1// SPDX-License-Identifier: GPL-2.0+2/*3 * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>4 */5 6#include <linux/acpi.h>7#include <linux/module.h>8 9MODULE_DESCRIPTION("Intel Smart Connect disabling driver");10MODULE_LICENSE("GPL");11 12static int smartconnect_acpi_init(struct acpi_device *acpi)13{14 unsigned long long value;15 acpi_status status;16 17 status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value);18 if (ACPI_FAILURE(status))19 return -EINVAL;20 21 if (value & 0x1) {22 dev_info(&acpi->dev, "Disabling Intel Smart Connect\n");23 status = acpi_execute_simple_method(acpi->handle, "SAOS", 0);24 }25 26 return 0;27}28 29static const struct acpi_device_id smartconnect_ids[] = {30 {"INT33A0", 0},31 {"", 0}32};33MODULE_DEVICE_TABLE(acpi, smartconnect_ids);34 35static struct acpi_driver smartconnect_driver = {36 .name = "intel_smart_connect",37 .class = "intel_smart_connect",38 .ids = smartconnect_ids,39 .ops = {40 .add = smartconnect_acpi_init,41 },42};43 44module_acpi_driver(smartconnect_driver);45