mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 21:54:06 +08:00
998d924b71
Add additional properties: NAME= Thermal zone type TEMP= Temperature sample value TRIP= Violated trip index EVENT= The notification event (new temperature sample, trip violation trip changed) This is the additional information to what kobject_uevent already provides. So it will not impact existing user spaces. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/*
|
|
* user_space.c - A simple user space Thermal events notifier
|
|
*
|
|
* Copyright (C) 2012 Intel Corp
|
|
* Copyright (C) 2012 Durgadoss R <durgadoss.r@intel.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; version 2 of the License.
|
|
*
|
|
* 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/thermal.h>
|
|
#include <linux/slab.h>
|
|
#include "thermal_core.h"
|
|
|
|
/**
|
|
* notify_user_space - Notifies user space about thermal events
|
|
* @tz - thermal_zone_device
|
|
* @trip - Trip point index
|
|
*
|
|
* This function notifies the user space through UEvents.
|
|
*/
|
|
static int notify_user_space(struct thermal_zone_device *tz, int trip)
|
|
{
|
|
char *thermal_prop[5];
|
|
int i;
|
|
|
|
mutex_lock(&tz->lock);
|
|
thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", tz->type);
|
|
thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", tz->temperature);
|
|
thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=%d", trip);
|
|
thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", tz->notify_event);
|
|
thermal_prop[4] = NULL;
|
|
kobject_uevent_env(&tz->device.kobj, KOBJ_CHANGE, thermal_prop);
|
|
for (i = 0; i < 4; ++i)
|
|
kfree(thermal_prop[i]);
|
|
mutex_unlock(&tz->lock);
|
|
return 0;
|
|
}
|
|
|
|
static struct thermal_governor thermal_gov_user_space = {
|
|
.name = "user_space",
|
|
.throttle = notify_user_space,
|
|
};
|
|
|
|
int thermal_gov_user_space_register(void)
|
|
{
|
|
return thermal_register_governor(&thermal_gov_user_space);
|
|
}
|
|
|
|
void thermal_gov_user_space_unregister(void)
|
|
{
|
|
thermal_unregister_governor(&thermal_gov_user_space);
|
|
}
|
|
|