1*47bbe03eSKate Hsuan // SPDX-License-Identifier: GPL-2.0+
2*47bbe03eSKate Hsuan /*
3*47bbe03eSKate Hsuan * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>
4*47bbe03eSKate Hsuan */
5*47bbe03eSKate Hsuan
6*47bbe03eSKate Hsuan #include <linux/acpi.h>
7*47bbe03eSKate Hsuan #include <linux/module.h>
8*47bbe03eSKate Hsuan
9*47bbe03eSKate Hsuan MODULE_LICENSE("GPL");
10*47bbe03eSKate Hsuan
smartconnect_acpi_init(struct acpi_device * acpi)11*47bbe03eSKate Hsuan static int smartconnect_acpi_init(struct acpi_device *acpi)
12*47bbe03eSKate Hsuan {
13*47bbe03eSKate Hsuan unsigned long long value;
14*47bbe03eSKate Hsuan acpi_status status;
15*47bbe03eSKate Hsuan
16*47bbe03eSKate Hsuan status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value);
17*47bbe03eSKate Hsuan if (ACPI_FAILURE(status))
18*47bbe03eSKate Hsuan return -EINVAL;
19*47bbe03eSKate Hsuan
20*47bbe03eSKate Hsuan if (value & 0x1) {
21*47bbe03eSKate Hsuan dev_info(&acpi->dev, "Disabling Intel Smart Connect\n");
22*47bbe03eSKate Hsuan status = acpi_execute_simple_method(acpi->handle, "SAOS", 0);
23*47bbe03eSKate Hsuan }
24*47bbe03eSKate Hsuan
25*47bbe03eSKate Hsuan return 0;
26*47bbe03eSKate Hsuan }
27*47bbe03eSKate Hsuan
28*47bbe03eSKate Hsuan static const struct acpi_device_id smartconnect_ids[] = {
29*47bbe03eSKate Hsuan {"INT33A0", 0},
30*47bbe03eSKate Hsuan {"", 0}
31*47bbe03eSKate Hsuan };
32*47bbe03eSKate Hsuan MODULE_DEVICE_TABLE(acpi, smartconnect_ids);
33*47bbe03eSKate Hsuan
34*47bbe03eSKate Hsuan static struct acpi_driver smartconnect_driver = {
35*47bbe03eSKate Hsuan .owner = THIS_MODULE,
36*47bbe03eSKate Hsuan .name = "intel_smart_connect",
37*47bbe03eSKate Hsuan .class = "intel_smart_connect",
38*47bbe03eSKate Hsuan .ids = smartconnect_ids,
39*47bbe03eSKate Hsuan .ops = {
40*47bbe03eSKate Hsuan .add = smartconnect_acpi_init,
41*47bbe03eSKate Hsuan },
42*47bbe03eSKate Hsuan };
43*47bbe03eSKate Hsuan
44*47bbe03eSKate Hsuan module_acpi_driver(smartconnect_driver);
45