[PATCH 2/2] drm/i915/mst: Use MST sideband message transaction for dpms

[Stefan Assmann]

On 2017-09-05 18:26, Dhinakaran Pandiyan wrote:
> Use the POWER_DOWN_PHY and POWER_UP_PHY sideband message trasactions to
> set power states for downstream sinks. Apart from giving us the ability
> to set power state for individual sinks, this fixes the below test for
> me
> 
> $ xrandr --display :0 --output DP-2-2-8 --off
> $ xrandr --display :0 --output DP-2-2-1 --off
> $ xrandr --display :0 --output DP-2-2-8 --auto #Black screen
> $ xrandr --display :0 --output DP-2-2-1 --auto
> 
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Lyude <lyude at redhat.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>

Tested-by: Stefan Assmann <sassmann at redhat.com>