4 * Copyright(C) 2010 Red Hat.
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.
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.
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
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/acpi.h>
25 MODULE_AUTHOR("Dave Airlie");
26 MODULE_DESCRIPTION("MXM WMI Driver");
27 MODULE_LICENSE("GPL");
29 #define MXM_WMMX_GUID "F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0"
31 MODULE_ALIAS("wmi:"MXM_WMMX_GUID);
33 #define MXM_WMMX_FUNC_MXDS 0x5344584D /* "MXDS" */
34 #define MXM_WMMX_FUNC_MXMX 0x53445344 /* "MXMX" */
42 int mxm_wmi_call_mxds(int adapter)
44 struct mxds_args args = {
45 .func = MXM_WMMX_FUNC_MXDS,
49 struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
50 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
53 printk("calling mux switch %d\n", adapter);
55 status = wmi_evaluate_method(MXM_WMMX_GUID, 0x1, adapter, &input,
58 if (ACPI_FAILURE(status))
61 printk("mux switched %d\n", status);
65 EXPORT_SYMBOL_GPL(mxm_wmi_call_mxds);
67 int mxm_wmi_call_mxmx(int adapter)
69 struct mxds_args args = {
70 .func = MXM_WMMX_FUNC_MXMX,
74 struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
75 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
78 printk("calling mux switch %d\n", adapter);
80 status = wmi_evaluate_method(MXM_WMMX_GUID, 0x1, adapter, &input,
83 if (ACPI_FAILURE(status))
86 printk("mux mutex set switched %d\n", status);
90 EXPORT_SYMBOL_GPL(mxm_wmi_call_mxmx);
92 bool mxm_wmi_supported(void)
95 guid_valid = wmi_has_guid(MXM_WMMX_GUID);
98 EXPORT_SYMBOL_GPL(mxm_wmi_supported);
100 static int __init mxm_wmi_init(void)
105 static void __exit mxm_wmi_exit(void)
109 module_init(mxm_wmi_init);
110 module_exit(mxm_wmi_exit);