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1/*
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" */
35#define MXM_WMMX_FUNC_MXMX 0x53445344 /* "MXMX" */
36
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);
55
56 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
68int 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
93bool 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);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * MXM WMI driver
4 *
5 * Copyright(C) 2010 Red Hat.
6 */
7#include <linux/kernel.h>
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/mxm-wmi.h>
11#include <linux/acpi.h>
12
13MODULE_AUTHOR("Dave Airlie");
14MODULE_DESCRIPTION("MXM WMI Driver");
15MODULE_LICENSE("GPL");
16
17#define MXM_WMMX_GUID "F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0"
18
19MODULE_ALIAS("wmi:"MXM_WMMX_GUID);
20
21#define MXM_WMMX_FUNC_MXDS 0x5344584D /* "MXDS" */
22#define MXM_WMMX_FUNC_MXMX 0x53445344 /* "MXMX" */
23
24struct mxds_args {
25 u32 func;
26 u32 args;
27 u32 xarg;
28};
29
30int mxm_wmi_call_mxds(int adapter)
31{
32 struct mxds_args args = {
33 .func = MXM_WMMX_FUNC_MXDS,
34 .args = 0,
35 .xarg = 1,
36 };
37 struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
38 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
39 acpi_status status;
40
41 printk("calling mux switch %d\n", adapter);
42
43 status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input,
44 &output);
45
46 if (ACPI_FAILURE(status))
47 return status;
48
49 printk("mux switched %d\n", status);
50 return 0;
51
52}
53EXPORT_SYMBOL_GPL(mxm_wmi_call_mxds);
54
55int mxm_wmi_call_mxmx(int adapter)
56{
57 struct mxds_args args = {
58 .func = MXM_WMMX_FUNC_MXMX,
59 .args = 0,
60 .xarg = 1,
61 };
62 struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
63 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
64 acpi_status status;
65
66 printk("calling mux switch %d\n", adapter);
67
68 status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input,
69 &output);
70
71 if (ACPI_FAILURE(status))
72 return status;
73
74 printk("mux mutex set switched %d\n", status);
75 return 0;
76
77}
78EXPORT_SYMBOL_GPL(mxm_wmi_call_mxmx);
79
80bool mxm_wmi_supported(void)
81{
82 bool guid_valid;
83 guid_valid = wmi_has_guid(MXM_WMMX_GUID);
84 return guid_valid;
85}
86EXPORT_SYMBOL_GPL(mxm_wmi_supported);
87
88static int __init mxm_wmi_init(void)
89{
90 return 0;
91}
92
93static void __exit mxm_wmi_exit(void)
94{
95}
96
97module_init(mxm_wmi_init);
98module_exit(mxm_wmi_exit);