| * driver.c - driver support |
| * (C) 2006-2007 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> |
| * Shaohua Li <shaohua.li@intel.com> |
| * Adam Belay <abelay@novell.com> |
| * This code is licenced under the GPL. |
| #include <linux/module.h> |
| #include <linux/cpuidle.h> |
| struct cpuidle_driver *cpuidle_curr_driver; |
| DEFINE_SPINLOCK(cpuidle_driver_lock); |
| * cpuidle_register_driver - registers a driver |
| int cpuidle_register_driver(struct cpuidle_driver *drv) |
| spin_lock(&cpuidle_driver_lock); |
| if (cpuidle_curr_driver) { |
| spin_unlock(&cpuidle_driver_lock); |
| cpuidle_curr_driver = drv; |
| spin_unlock(&cpuidle_driver_lock); |
| EXPORT_SYMBOL_GPL(cpuidle_register_driver); |
| * cpuidle_unregister_driver - unregisters a driver |
| void cpuidle_unregister_driver(struct cpuidle_driver *drv) |
| spin_lock(&cpuidle_driver_lock); |
| cpuidle_curr_driver = NULL; |
| spin_unlock(&cpuidle_driver_lock); |
| EXPORT_SYMBOL_GPL(cpuidle_unregister_driver); |