diff options
| author | Len Brown <len.brown@intel.com> | 2012-10-09 01:35:52 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-10-09 01:35:52 -0400 |
| commit | 29b19e250434c6193c8b8e4c34c9c6284dd4f101 (patch) | |
| tree | 8a1c8e308c9ae964f7fb612e921e10cf4c30ba15 /Documentation/thermal/cpu-cooling-api.txt | |
| parent | 125c4c706b680c7831f0966ff873c1ad0354ec25 (diff) | |
| parent | c072fed95c9855a920c114d7fa3351f0f54ea06e (diff) | |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux into thermal
Conflicts:
drivers/staging/omap-thermal/omap-thermal-common.
OMAP supplied dummy TC1 and TC2,
at the same time that the thermal tree removed them
from thermal_zone_device_register()
drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
propogate the upstream MAX_IDR_LEVEL re-name
to prevent a build failure
Previously-fixed-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation/thermal/cpu-cooling-api.txt')
| -rw-r--r-- | Documentation/thermal/cpu-cooling-api.txt | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/thermal/cpu-cooling-api.txt b/Documentation/thermal/cpu-cooling-api.txt new file mode 100644 index 000000000000..fca24c931ec8 --- /dev/null +++ b/Documentation/thermal/cpu-cooling-api.txt @@ -0,0 +1,32 @@ +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. |