| CPU cooling APIs How To | |
| =================================== | |
| Written by Amit Daniel Kachhap <amit.kachhap@linaro.org> | |
| Updated: 12 May 2012 | |
| Copyright (c) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com) | |
| 0. Introduction | |
| The generic cpu cooling(freq clipping) provides registration/unregistration APIs | |
| to the caller. The binding of the cooling devices to the trip point is left for | |
| the user. The registration APIs returns the cooling device pointer. | |
| 1. cpu cooling APIs | |
| 1.1 cpufreq registration/unregistration APIs | |
| 1.1.1 struct thermal_cooling_device *cpufreq_cooling_register( | |
| struct cpumask *clip_cpus) | |
| This interface function registers the cpufreq cooling device with the name | |
| "thermal-cpufreq-%x". This api can support multiple instances of cpufreq | |
| cooling devices. | |
| clip_cpus: cpumask of cpus where the frequency constraints will happen. | |
| 1.1.2 void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev) | |
| This interface function unregisters the "thermal-cpufreq-%x" cooling device. | |
| cdev: Cooling device pointer which has to be unregistered. |