[Intel-gfx] [PATCH] drm/i915: Update bits to check in device class from VBT to detect eDP

[Jesse Barnes]

On Thu, 5 Jun 2014 16:09:29 +0300
Ville Syrjälä <ville.syrjala at linux.intel.com> wrote:

> On Thu, Jun 05, 2014 at 06:25:13PM +0530, Shobhit Kumar wrote:
> > The DEVICE_TYPE_eDP has been changed to 0x1806 in case of BYT which
> > can causes wrong detection failures for eDP. Reduce the number of bits
> > of interest in DEVICE_TYPE_eDP_BITS to just check most relevant and
> > conclusive ones and ensure they are set in device_class from VBT. This
> > will ensure that eDP detection works across platforms
> 
> The current bits will match correctly for 0x1806. I don't have a problem
> with the patch per-say but would be nice to know what the troublesome
> device type really was, if indeed there was one. I'm just slightly
> worried that we might start to get false positives on some platforms if
> we make it too relaxed.

Still waiting for results, but
https://bugs.freedesktop.org/show_bug.cgi?id=78795 was what motivated this.

Jesse