On Tue, Dec 16, 2014 at 05:00:38PM -0200, Paulo Zanoni wrote:
> 2014-12-10 21:53 GMT-02:00 Todd Previte <[email protected]>:
> > +               if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT) {
> > +                       if (intel_encoder->new_crtc) {
> > +                               crtc_config = 
> > &intel_encoder->new_crtc->config;
> > +                               pipe_bpp = crtc_config->pipe_bpp;
> > +                               mode = &crtc_config->adjusted_mode;
> > +                               hres = mode->hdisplay;
> > +                               vres = mode->vdisplay;
> > +                       } else if (intel_encoder->base.crtc) {
> > +                               icrtc = 
> > to_intel_crtc(intel_encoder->base.crtc);
> > +                               pipe_bpp = icrtc->config.pipe_bpp;
> > +                               mode = &icrtc->config.adjusted_mode;
> > +                               hres = mode->hdisplay;
> > +                               vres = mode->vdisplay;
> > +                       } else {
> > +                               pipe_bpp = 0;
> > +                               hres = vres = 0;
> > +                       }
> 
> Why do you have this new_crtc vs current_crtc vs no crtc distinction
> here? Is it really necessary? Shouldn't the "DP testing debugfs
> protocol" establish when exactly the information should be queried,
> and then give some errors in case information is being requested at
> the wrong time?

Presuming adequate locking exists (haven't checked tbh) new_* pointers always
match the equivalent base pointers. new_ pointers/structures are
exclusively for modeset code (and specifically state computation). I guess
the new_crtc case needs to be dropped here.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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