blob: 0aea63b3729a4481ece3bc5d1c8dfb041fe0f2bc [file] [log] [blame]
Dave Airlie99b38b42010-12-06 12:43:33 +10001/*
2 * MXM WMI driver
3 *
4 * Copyright(C) 2010 Red Hat.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20#include <linux/kernel.h>
21#include <linux/module.h>
22#include <linux/init.h>
23#include <acpi/acpi_bus.h>
24#include <acpi/acpi_drivers.h>
25
26MODULE_AUTHOR("Dave Airlie");
27MODULE_DESCRIPTION("MXM WMI Driver");
28MODULE_LICENSE("GPL");
29
30#define MXM_WMMX_GUID "F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0"
31
32MODULE_ALIAS("wmi:"MXM_WMMX_GUID);
33
34#define MXM_WMMX_FUNC_MXDS 0x5344584D /* "MXDS" */
Dave Airlie000703f2011-05-09 11:40:25 +100035#define MXM_WMMX_FUNC_MXMX 0x53445344 /* "MXMX" */
Dave Airlie99b38b42010-12-06 12:43:33 +100036
37struct mxds_args {
38 u32 func;
39 u32 args;
40 u32 xarg;
41};
42
43int mxm_wmi_call_mxds(int adapter)
44{
45 struct mxds_args args = {
46 .func = MXM_WMMX_FUNC_MXDS,
47 .args = 0,
48 .xarg = 1,
49 };
50 struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
51 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
52 acpi_status status;
53
54 printk("calling mux switch %d\n", adapter);
Dave Airlie000703f2011-05-09 11:40:25 +100055
Dave Airlie99b38b42010-12-06 12:43:33 +100056 status = wmi_evaluate_method(MXM_WMMX_GUID, 0x1, adapter, &input,
57 &output);
58
59 if (ACPI_FAILURE(status))
60 return status;
61
62 printk("mux switched %d\n", status);
63 return 0;
64
65}
66EXPORT_SYMBOL_GPL(mxm_wmi_call_mxds);
67
Dave Airlie000703f2011-05-09 11:40:25 +100068int mxm_wmi_call_mxmx(int adapter)
69{
70 struct mxds_args args = {
71 .func = MXM_WMMX_FUNC_MXMX,
72 .args = 0,
73 .xarg = 1,
74 };
75 struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
76 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
77 acpi_status status;
78
79 printk("calling mux switch %d\n", adapter);
80
81 status = wmi_evaluate_method(MXM_WMMX_GUID, 0x1, adapter, &input,
82 &output);
83
84 if (ACPI_FAILURE(status))
85 return status;
86
87 printk("mux mutex set switched %d\n", status);
88 return 0;
89
90}
91EXPORT_SYMBOL_GPL(mxm_wmi_call_mxmx);
92
Dave Airlie99b38b42010-12-06 12:43:33 +100093bool mxm_wmi_supported(void)
94{
95 bool guid_valid;
96 guid_valid = wmi_has_guid(MXM_WMMX_GUID);
97 return guid_valid;
98}
99EXPORT_SYMBOL_GPL(mxm_wmi_supported);
100
101static int __init mxm_wmi_init(void)
102{
103 return 0;
104}
105
106static void __exit mxm_wmi_exit(void)
107{
108}
109
110module_init(mxm_wmi_init);
111module_exit(mxm_wmi_exit);