Hdmi DDc/ci channel enabling

Hello. Is it possible to enable the Ddc/ci channel from the HDMI cable on Samsung TV ?
Most displays support that and then I am able to control the backlight from a pc by example. But this is not supported by Samsung tv, particularly model UE50NU7455.
Is there a way to activate it ?
if not, is there another way to remotely control the backlight of the tv ? USB, an app ? anything.
thanks