Hi Jani, In GVT (virtualization) environment, it only can use DP. Therefore, we want to enable Port A as DP so that display panel on Port A can be used by GVT. Best regard Mustamin -----Original Message----- From: Jani Nikula [mailto:jani.nikula@xxxxxxxxxxxxxxx] Sent: Tuesday, February 20, 2018 7:35 PM To: Mustaffa, Mustamin B <mustamin.b.mustaffa@xxxxxxxxx>; intel-gfx@xxxxxxxxxxxxxxxxxxxxx Cc: Mustaffa, Mustamin B <mustamin.b.mustaffa@xxxxxxxxx>; Anuar, Nuhairi <nuhairi.anuar@xxxxxxxxx> Subject: Re: [PATCH] drm/i915: fix the issue DP-1 not working in guest On Tue, 20 Feb 2018, Mustamin B Mustaffa <mustamin.b.mustaffa@xxxxxxxxx> wrote: > In GVT guest, when port A is DP, i915 will force it as an EDP panel, > which will cause DP-1 not working in GVT guest. > This patch fixed this issue by check intel_vgpu_active() in > intel_ddi_compute_config(). Just repeating Ville's question from last June that went unanswered [1], "And why exactly are you trying to register DP on port A?" BR, Jani. [1] http://mid.mail-archive.com/20170614133842.GM12629@xxxxxxxxx > > Signed-off-by: Min He <min.he@xxxxxxxxx> > Signed-off-by: Nuhairi Anuar <nuhairi.anuar@xxxxxxxxx> > Signed-off-by: Mustamin B Mustaffa <mustamin.b.mustaffa@xxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_ddi.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_ddi.c > b/drivers/gpu/drm/i915/intel_ddi.c > index db92a26..9f5e85c 100644 > --- a/drivers/gpu/drm/i915/intel_ddi.c > +++ b/drivers/gpu/drm/i915/intel_ddi.c > @@ -2720,7 +2720,7 @@ static bool intel_ddi_compute_config(struct intel_encoder *encoder, > enum port port = encoder->port; > int ret; > > - if (port == PORT_A) > + if (port == PORT_A && !intel_vgpu_active(dev_priv)) > pipe_config->cpu_transcoder = TRANSCODER_EDP; > > if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI)) -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
