On 10/5/19 3:20 PM, Akinobu Mita wrote: > 2019年10月5日(土) 6:17 Jacek Anaszewski <jacek.anaszewski@xxxxxxxxx>: >> >> Hi Akinobu, >> >> Why do you think this change is needed? Does it solve >> some use case for you? > > It can be useful when using with an LED trigger that could set the > brightness values other than LED_FULL or LED_OFF. > > The LED CPU trigger for all CPUs (not per CPU) sets the brightness value > depending on the number of active CPUs. We can define the multi brightness > level gpio LED with fewer number of GPIO LEDs than the total number of > CPUs, and the LEDs can be viewed as a level meter. Can't you achieve exactly the same effect by creating separate LED class device for each GPIO LED and registering each of them for separate cpuN trigger? -- Best regards, Jacek Anaszewski