112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
|
/*
|
||
|
|
* MXM WMI driver
|
||
|
|
*
|
||
|
|
* Copyright(C) 2010 Red Hat.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/mxm-wmi.h>
|
||
|
|
#include <linux/acpi.h>
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Dave Airlie");
|
||
|
|
MODULE_DESCRIPTION("MXM WMI Driver");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
|
||
|
|
#define MXM_WMMX_GUID "F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0"
|
||
|
|
|
||
|
|
MODULE_ALIAS("wmi:"MXM_WMMX_GUID);
|
||
|
|
|
||
|
|
#define MXM_WMMX_FUNC_MXDS 0x5344584D /* "MXDS" */
|
||
|
|
#define MXM_WMMX_FUNC_MXMX 0x53445344 /* "MXMX" */
|
||
|
|
|
||
|
|
struct mxds_args {
|
||
|
|
u32 func;
|
||
|
|
u32 args;
|
||
|
|
u32 xarg;
|
||
|
|
};
|
||
|
|
|
||
|
|
int mxm_wmi_call_mxds(int adapter)
|
||
|
|
{
|
||
|
|
struct mxds_args args = {
|
||
|
|
.func = MXM_WMMX_FUNC_MXDS,
|
||
|
|
.args = 0,
|
||
|
|
.xarg = 1,
|
||
|
|
};
|
||
|
|
struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
|
||
|
|
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
|
||
|
|
acpi_status status;
|
||
|
|
|
||
|
|
printk("calling mux switch %d\n", adapter);
|
||
|
|
|
||
|
|
status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input,
|
||
|
|
&output);
|
||
|
|
|
||
|
|
if (ACPI_FAILURE(status))
|
||
|
|
return status;
|
||
|
|
|
||
|
|
printk("mux switched %d\n", status);
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(mxm_wmi_call_mxds);
|
||
|
|
|
||
|
|
int mxm_wmi_call_mxmx(int adapter)
|
||
|
|
{
|
||
|
|
struct mxds_args args = {
|
||
|
|
.func = MXM_WMMX_FUNC_MXMX,
|
||
|
|
.args = 0,
|
||
|
|
.xarg = 1,
|
||
|
|
};
|
||
|
|
struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
|
||
|
|
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
|
||
|
|
acpi_status status;
|
||
|
|
|
||
|
|
printk("calling mux switch %d\n", adapter);
|
||
|
|
|
||
|
|
status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input,
|
||
|
|
&output);
|
||
|
|
|
||
|
|
if (ACPI_FAILURE(status))
|
||
|
|
return status;
|
||
|
|
|
||
|
|
printk("mux mutex set switched %d\n", status);
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(mxm_wmi_call_mxmx);
|
||
|
|
|
||
|
|
bool mxm_wmi_supported(void)
|
||
|
|
{
|
||
|
|
bool guid_valid;
|
||
|
|
guid_valid = wmi_has_guid(MXM_WMMX_GUID);
|
||
|
|
return guid_valid;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(mxm_wmi_supported);
|
||
|
|
|
||
|
|
static int __init mxm_wmi_init(void)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __exit mxm_wmi_exit(void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(mxm_wmi_init);
|
||
|
|
module_exit(mxm_wmi_exit);
|