On Mon, 30 Apr 2012 21:33:42 -0300 Eugeni Dodonov <eugeni at dodonov.net> wrote: > On Mon, Apr 30, 2012 at 21:27, Jesse Barnes <jbarnes at virtuousgeek.org>wrote: > > > We really really need to get the port detection working on HSW using > > the VBT. > > > > It is not that easy from what I've seen. VBT can give some hints on which > ports can support only DP or HDMI, but it does not answers all the cases. > So the best solution seems to be running a DP AUX query when we got an > output, and if it succeeds - it is a DP; otherwise, it is HDMI. > > So my idea here is: > - add both HDMI and DP connectors for each available port (those we can > get via VBT and from the GPU variant - some variants don't have specific > DDIs in hardware, and VBT can further say which DDI are incapable of > driving HDMI when present) > - add an intel_ddi_detect routine for .detect of each of them > - the intel_ddi_detect would try doing the DP AUX test, and dispatch > either intel_hdmi_detect or intel_dp_detect accordingly. > > Once the DP code will be ready, we'll put this in place. But for now, only > HDMI works anyway, and I don't have any DP monitor around to play with :). > > Does this looks reasonable? I had wanted to avoid every HSW system looking like it had a bunch of HDMI and DP ports, when it really only has one of each or something. -- Jesse Barnes, Intel Open Source Technology Center
