On Wed, 2015-19-08 at 16:49:54 UTC, Vasant Hegde wrote: > This patch implements LED driver for PowerNV platform using the existing > generic LED class framework. > > PowerNV platform has below type of LEDs: > - System attention > Indicates there is a problem with the system that needs attention. > - Identify > Helps the user locate/identify a particular FRU or resource in the > system. > - Fault > Indicates there is a problem with the FRU or resource at the > location with which the indicator is associated. > > We register classdev structures for all individual LEDs detected on the > system through LED specific device tree nodes. Device tree nodes specify > what all kind of LEDs present on the same location code. It registers > LED classdev structure for each of them. > > All the system LEDs can be found in the same regular path /sys/class/leds/. > We don't use LED colors. We use LED node and led-types property to form > LED classdev. Our LEDs have names in this format. > > <location_code>:<attention|identify|fault> > > Any positive brightness value would turn on the LED and a zero value would > turn off the LED. The driver will return LED_FULL (255) for any turned on > LED and LED_OFF (0) for any turned off LED. > > The platform level implementation of LED get and set state has been > achieved through OPAL calls. These calls are made available for the > driver by exporting from architecture specific codes. > > Signed-off-by: Vasant Hegde <hegdevasant@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Anshuman Khandual <khandual@xxxxxxxxxxxxxxxxxx> > Acked-by: Stewart Smith <stewart@xxxxxxxxxxxxxxxxxx> > Tested-by: Stewart Smith <stewart@xxxxxxxxxxxxxxxxxx> > Acked-by: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx> Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/84ad6e5cd3e8b365c893 cheers -- To unsubscribe from this list: send the line "unsubscribe linux-leds" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
