Hi Raul, On 09/05/2016 08:32 PM, Raul Piper wrote: > Hi, > I am trying to send the brightness value ( for 5 channels) by > echo "val1val2val3val4val5" > brightness , How did you infer this format? Please get acquainted with Documentation/leds/leds-class.txt and Documentation/ABI/testing/sysfs-class-led. > But seems like even if I change the brightness type to enum or int in > my driver ,I will never be able to send the brightness string because > led class defines the brightness value as enum. One LED class device can control one channel. > > extern void led_set_brightness(struct led_classdev *led_cdev, > enum led_brightness brightness); > > Only possible way I am finding is to create attributes for each > channel like brightness,default trigger,max_brightness and any user > defined attributes, but i am not getting how to do this. > Can some on please comment or post the link to the example driver. > Do i have to call led_class_register for every channel and I have to > define every channel in the device tree? Just grep through drivers/leds and Documentation/devicetree/bindings/leds/. -- Best regards, Jacek Anaszewski _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
