[Intel-gfx] [PATCH] drm/i915: Use AUX for backlight only if eDP 1.4 or later

[David Weinehall]

On Tue, Jul 25, 2017 at 03:41:46PM +0300, David Weinehall wrote:
> On 2017-07-25 02:15, Puthikorn Voravootivat wrote:
> > I saw a DP 1.3 panel that advertise AUX backlight brightness control
> > but not working properly. So it should work but not in real world.
> > I think that is good reason enough to add this as a heuristic.
> > 
> > 
> Either key it on eDP 1.4 and hope that it's a reasonable expectation,
> or employ a whitelist (potentially lots of effort adding all displays that
> supports AUX backlight, but safe from regressions) or a blacklist
> (potentially fewer displays need to be added, but risks introducing
> regressions for end users).

Sorry for the blurb in the previous mail, I replied from my official
Intel address by mistake :S


Kind regards, David