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5c7f80f7 MG |
1 | /* |
2 | * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | ||
20 | #include <linux/init.h> | |
21 | #include <linux/module.h> | |
8b48463f | 22 | #include <linux/acpi.h> |
5c7f80f7 MG |
23 | |
24 | MODULE_LICENSE("GPL"); | |
25 | ||
26 | static int smartconnect_acpi_init(struct acpi_device *acpi) | |
27 | { | |
4a2d6f66 | 28 | unsigned long long value; |
5c7f80f7 MG |
29 | acpi_status status; |
30 | ||
4a2d6f66 | 31 | status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value); |
5c7f80f7 MG |
32 | if (!ACPI_SUCCESS(status)) |
33 | return -EINVAL; | |
34 | ||
4a2d6f66 | 35 | if (value & 0x1) { |
5c7f80f7 | 36 | dev_info(&acpi->dev, "Disabling Intel Smart Connect\n"); |
77c39851 | 37 | status = acpi_execute_simple_method(acpi->handle, "SAOS", 0); |
5c7f80f7 MG |
38 | } |
39 | ||
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40 | return 0; |
41 | } | |
42 | ||
43 | static const struct acpi_device_id smartconnect_ids[] = { | |
44 | {"INT33A0", 0}, | |
45 | {"", 0} | |
46 | }; | |
47 | ||
48 | static struct acpi_driver smartconnect_driver = { | |
49 | .owner = THIS_MODULE, | |
50 | .name = "intel_smart_connect", | |
51 | .class = "intel_smart_connect", | |
52 | .ids = smartconnect_ids, | |
53 | .ops = { | |
54 | .add = smartconnect_acpi_init, | |
55 | }, | |
56 | }; | |
57 | ||
4d263536 | 58 | module_acpi_driver(smartconnect_driver); |
5c7f80f7 MG |
59 | |
60 | MODULE_DEVICE_TABLE(acpi, smartconnect_ids); |