On Mon, Dec 05, 2016 at 09:26:27AM +0200, Ran Shalit wrote: > Hello, > > I am trying to turn off screen using sysfs entries, > but I'm having some difficulties with it: > > 1. > command: > echo 0 > /sys/devices/platform/s5p-dsim.0/ea8061/backlight/panel/brightness > result: > screen is dimmed - BUT not turned off > > 2. > command: > cat > /sys/devices/platform/s5p-dsim.0/ea8061/backlight/panel/actual_brightness > 20 > > This strengthen the fast that we didn't turned off brightness completely > > 3. In this point I though that maybe I can turn off the whole brightness > device > > ls /sys/devices/platform/s5p-dsim.0/ea8061/backlight/panel/ > actual_brightness > auto_brightness > bl_power > brightness > device > dimming > max_brightness > power > subsystem > type > uevent > > I made some trials , but didn't made it turned off yet. > Is there any idea if it's possible to turn it off completely ? If the driver supports power management, then you can control the power state with the power/runtime_status sysfs entry. Some of the sysfs entries in the power/ directory are documented in Documentation/ABI/testing/sysfs-devices-power. Brian _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
