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