Hi, On 09/16/2017 03:58 AM, Pavel Machek wrote: > Hi! > >>>>>> These patch series add the LED_BRIGHTNESS_FAST flag support for >>>>>> ledtrig-transient to use hrtimer so that platforms with high-resolution timer >>>>>> support can have better accuracy in the trigger duration timing. The need for > ... >>> If we want to say "lets move all vibrations from input to LED >>> subsystem"... I don't think that is good idea, but its a valid >>> discussion. Some good reasons would be needed. >>> >>> But having half devices use one interface and half use different one >>> is just bad... especially when only reason to do it that way is >>> "David wants to do it that way, android library made a mistake and he >>> now wants it to propagate to whole world". >> >> This is not the only reason. Adding hr_timer support to >> ledtrig-transient (and similarly to ledtrig-timer) would allow >> to increase the accuracy and stability of delay_on/delay_off >> intervals at low values. >> >> Do you think such an improvement could be harmful in some way, >> even if it was made optional? > > Of course, we can make LED timing accurate down to microseconds. It will > mean increased overhead -- for "improvement" human can not perceive. > > If someone has problems with LED delays not being accurate enough... we > may want to fix it. But that is not the case here, is it? AFAIR David was mentioning that the hr_timer support is perceivable -- Best regards, Jacek Anaszewski
