diff options
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/thermal/Makefile | 1 | ||||
| -rw-r--r-- | drivers/thermal/user_space.c | 68 |
3 files changed, 75 insertions, 0 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 7e1b6de68566..f679eea2addb 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -67,3 +67,9 @@ config STEP_WISE depends on THERMAL help Enable this to manage platform thermals using a simple linear + +config USER_SPACE + bool "User_space thermal governor" + depends on THERMAL + help + Enable this to let the user space manage the platform thermals. diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 4e53c00fe89d..e5f79747fa94 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_RCAR_THERMAL) += rcar_thermal.o obj-$(CONFIG_EXYNOS_THERMAL) += exynos_thermal.o obj-$(CONFIG_FAIR_SHARE) += fair_share.o obj-$(CONFIG_STEP_WISE) += step_wise.o +obj-$(CONFIG_USER_SPACE) += user_space.o diff --git a/drivers/thermal/user_space.c b/drivers/thermal/user_space.c new file mode 100644 index 000000000000..fb246b90286e --- /dev/null +++ b/drivers/thermal/user_space.c @@ -0,0 +1,68 @@ +/* + * 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. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/module.h> +#include <linux/thermal.h> + +#include "thermal_core.h" + +/** + * notify_user_space - Notifies user space about thermal events + * @tz - thermal_zone_device + * + * This function notifies the user space through UEvents. + */ +int notify_user_space(struct thermal_zone_device *tz, int trip) +{ + mutex_lock(&tz->lock); + kobject_uevent(&tz->device.kobj, KOBJ_CHANGE); + mutex_unlock(&tz->lock); + return 0; +} + +struct thermal_governor thermal_gov_user_space = { + .name = "user_space", + .throttle = notify_user_space, + .owner = THIS_MODULE, +}; + +static int __init thermal_gov_user_space_init(void) +{ + return thermal_register_governor(&thermal_gov_user_space); +} + +static void __exit thermal_gov_user_space_exit(void) +{ + thermal_unregister_governor(&thermal_gov_user_space); +} + +/* This should load after thermal framework */ +fs_initcall(thermal_gov_user_space_init); +module_exit(thermal_gov_user_space_exit); + +MODULE_AUTHOR("Durgadoss R"); +MODULE_DESCRIPTION("A user space Thermal notifier"); +MODULE_LICENSE("GPL"); |