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);