On Thu, Aug 07, 2014 at 01:45:31PM +0200, Daniel Vetter wrote:
> On Tue, Jul 15, 2014 at 11:11:37AM +0200, Daniel Vetter wrote:
> > On Tue, Jul 15, 2014 at 02:10:28PM +0530, sonika.jindal@xxxxxxxxx wrote:
> > > + /* FBC does not work on some platforms for rotated planes */
> > > + if (INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev)) {
> > > + if (dev_priv->fbc.plane == intel_crtc->plane &&
> > > + intel_plane->rotation != BIT(DRM_ROTATE_0))
> > > + intel_disable_fbc(dev);
> > > + /* If rotation was set earlier and new rotation is 0,
> > > + we might have disabled fbc earlier. So update it now */
> > > + else if (intel_plane->rotation == BIT(DRM_ROTATE_0)
> > > + && old_val != BIT(DRM_ROTATE_0)) {
> > > + mutex_lock(&dev->struct_mutex);
> > > + intel_update_fbc(dev);
> > > + mutex_unlock(&dev->struct_mutex);
> > > + }
> > > + }
> >
> > Indentation is screwed up here. Also if we convert some of the checks into
> > early bails we could de-indent this by one level.
> >
> > Also Chris mentioned that on some platforms this won't work and it's more
> > future-proof to just do a full modeset until we have the proper
> > infrastructure.
>
> Apparently this review here was never addressed, as Chris just pointed out
> on irc. I've dropped the patch again.
>
> I think we need:
> - The same sequence as with the sprite set_property function, i.e. we need
> to call the update_plane function (not the raw low-level one, the
> high-level with all the checks).
> - The fbc check is wrong and will miss updates when the crtc is off. We
> need to move this into the general list of checks in intel_update_fbc.
> - Since this seems to be buggy I want added testcases to combine fbc
> correctness with screen rotation. Probably best to reuse the existing
> fbc testcase and add a bunch or rotated tests.
Ok, the check in update_fbc is there, I've been blind. Sorry about all the
confusion. So just amounts of calling the higher level function and we can
forgo the fbc testing.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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