From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: Re: [RFC 4/4] drm: Add NVIDIA Tegra support Date: Thu, 12 Apr 2012 11:33:01 +0200 Message-ID: <20120412093301.GB23336@avionic-0098.mockup.avionic-design.de> References: <1334146230-1795-1-git-send-email-thierry.reding@avionic-design.de> <1334146230-1795-5-git-send-email-thierry.reding@avionic-design.de> <4F85C97E.50203@wwwdotorg.org> <20120412092106.GU3852@pengutronix.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8054262657807754720==" Return-path: In-Reply-To: <20120412092106.GU3852-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Sascha Hauer Cc: Stephen Warren , devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Jon Mayo , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Colin Cross , linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-tegra@vger.kernel.org --===============8054262657807754720== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="NMuMz9nt05w80d4+" Content-Disposition: inline --NMuMz9nt05w80d4+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline * Sascha Hauer wrote: > You might want to have a look at the sdrm patches I recently posted to > dri-devel and arm Linux Kernel. Among other things they allow to > register crtcs/connectors/encoders seperately so that each of them can > have its own representation in the devicetree. I haven't looked into > devicetree support for DRM, but with or without devicetree the problem > that we do not have a single PCI card for registering all DRM components > is the same. I'll do that. One interesting use-case that's been on my mind for some time is if it would be possible to provide a CRTC via DRM that isn't part of the SoC or DRM "device" but which can display a framebuffer prepared by the DRM framework. In other words I would like to use the Tegra hardware to render content into a framebuffer (using potentially the 3D engine or HW accelerated video decoding blocks) but display that framebuffer with a CRTC registered by a different driver (perhaps provided by a PCIe or USB device). I think such a setup would be possible if the CRTC registration can be decoupled from the DRM driver. Perhaps sdrm even supports that already? Thierry --NMuMz9nt05w80d4+ Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAk+GoUwACgkQZ+BJyKLjJp96wQCeOgh2gZUmQUL1oddfmrCLpejW nEUAn2upj9yAZjEmbirx6hhSnd3+6l9r =8elq -----END PGP SIGNATURE----- --NMuMz9nt05w80d4+-- --===============8054262657807754720== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ iommu mailing list iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org https://lists.linuxfoundation.org/mailman/listinfo/iommu --===============8054262657807754720==--