system76-dkms/system76/wmi.c

84 lines
2.0 KiB
C

/*
* wmi.c
*
* Copyright (C) 2017 Jeremy Soller <jeremy@system76.com>
* Copyright (C) 2014-2016 Arnoud Willemsen <mail@lynthium.com>
* Copyright (C) 2013-2015 TUXEDO Computers GmbH <tux@tuxedocomputers.com>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
static void s76_wmi_notify(u32 value, void *context)
{
u32 event;
if (value != 0xD0) {
S76_INFO("Unexpected WMI event (%0#6x)\n", value);
return;
}
s76_wmi_evaluate_wmbb_method(GET_EVENT, 0, &event);
S76_INFO("WMI event code (%x)\n", event);
switch (event) {
case 0xF4:
airplane_wmi();
break;
default:
kb_wmi(event);
break;
}
}
static int s76_wmi_probe(struct platform_device *dev)
{
int status;
status = wmi_install_notify_handler(S76_EVENT_GUID,
s76_wmi_notify, NULL);
if (unlikely(ACPI_FAILURE(status))) {
S76_ERROR("Could not register WMI notify handler (%0#6x)\n",
status);
return -EIO;
}
if (kb_backlight.ops)
kb_backlight.ops->init();
return 0;
}
static int s76_wmi_remove(struct platform_device *dev)
{
wmi_remove_notify_handler(S76_EVENT_GUID);
return 0;
}
static int s76_wmi_resume(struct platform_device *dev)
{
if (kb_backlight.ops && kb_backlight.state == KB_STATE_ON)
kb_backlight.ops->set_mode(kb_backlight.mode);
return 0;
}
static struct platform_driver s76_platform_driver = {
.remove = s76_wmi_remove,
.resume = s76_wmi_resume,
.driver = {
.name = S76_DRIVER_NAME,
.owner = THIS_MODULE,
},
};