This wasn't explained well anywhere and should be clearly specified. Lets add a top level comment for this.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- drivers/thermal/cpu_cooling.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index cc10641..a5a9317 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -28,6 +28,20 @@ #include <linux/cpu.h> #include <linux/cpu_cooling.h>
+/* + * Cooling state <-> CPUFreq frequency + * + * Cooling states are translated to frequencies throughout this driver and this + * is the relation between them. + * + * Highest cooling state corresponds to lowest possible frequency. + * + * i.e. + * level 0 --> 1st Max Freq + * level 1 --> 2nd Max Freq + * ... + */ + /** * struct cpufreq_cooling_device - data for cooling device with cpufreq * @id: unique integer value corresponding to each cpufreq_cooling_device