> On Aug 9, 2017, at 8:20 PM, Dhinakaran Pandiyan <dhn...@gmail.com> wrote:
> We currently assume port A is connected to a DP sink when VBT is absent,
> instead assume it is connected to an eDP sink, which seems like a more
> common configuration. Although I don't have data to back this up,
> it is still just as valid as asumming port A is not eDP.
I also don't have enough data, but it is the most common configuration on the
rvp boards that I see around...
Also the missing vbt case is more for dev platforms anyways right?!
> This reverts to
> the behavior before a98d9c1 ("drm/i915/ddi: Rely on VBT DDI port info for
> eDP detection") except only when there is no VBT. Knowing whether a panel
> is eDP or not from the panel itself would have been nicer, but I cannot
> find any DPCD registers that provide this reliably.
> Cc: Jani Nikula <jani.nik...@intel.com>
> Cc: Imre Deak <imre.d...@intel.com>
> Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
> Cc: Clint Taylor <clinton.a.tay...@intel.com>
Does this fix the issue Joe has on his GLK B0?
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
> drivers/gpu/drm/i915/intel_bios.c | 1 +
> 1 file changed, 1 insertion(+)
> diff --git a/drivers/gpu/drm/i915/intel_bios.c
> index 82b144c..89a405e 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -1403,6 +1403,7 @@ init_vbt_missing_defaults(struct drm_i915_private
> info->supports_dvi = (port != PORT_A && port != PORT_E);
> info->supports_hdmi = info->supports_dvi;
> info->supports_dp = (port != PORT_E);
> + info->supports_edp = (port == PORT_A);
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