1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <linux/acpi.h>
7*4882a593Smuzhiyun #include <linux/module.h>
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun MODULE_LICENSE("GPL");
10*4882a593Smuzhiyun
smartconnect_acpi_init(struct acpi_device * acpi)11*4882a593Smuzhiyun static int smartconnect_acpi_init(struct acpi_device *acpi)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun unsigned long long value;
14*4882a593Smuzhiyun acpi_status status;
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value);
17*4882a593Smuzhiyun if (ACPI_FAILURE(status))
18*4882a593Smuzhiyun return -EINVAL;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun if (value & 0x1) {
21*4882a593Smuzhiyun dev_info(&acpi->dev, "Disabling Intel Smart Connect\n");
22*4882a593Smuzhiyun status = acpi_execute_simple_method(acpi->handle, "SAOS", 0);
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun return 0;
26*4882a593Smuzhiyun }
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun static const struct acpi_device_id smartconnect_ids[] = {
29*4882a593Smuzhiyun {"INT33A0", 0},
30*4882a593Smuzhiyun {"", 0}
31*4882a593Smuzhiyun };
32*4882a593Smuzhiyun MODULE_DEVICE_TABLE(acpi, smartconnect_ids);
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun static struct acpi_driver smartconnect_driver = {
35*4882a593Smuzhiyun .owner = THIS_MODULE,
36*4882a593Smuzhiyun .name = "intel_smart_connect",
37*4882a593Smuzhiyun .class = "intel_smart_connect",
38*4882a593Smuzhiyun .ids = smartconnect_ids,
39*4882a593Smuzhiyun .ops = {
40*4882a593Smuzhiyun .add = smartconnect_acpi_init,
41*4882a593Smuzhiyun },
42*4882a593Smuzhiyun };
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun module_acpi_driver(smartconnect_driver);
45