From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: Re: [RFC 4/4] drm: Add NVIDIA Tegra support Date: Wed, 11 Apr 2012 15:23:26 +0200 Message-ID: <20120411132326.GD27337@avionic-0098.adnet.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> <20120411124810.GK4296@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="M/SuVGWktc5uNpra" Return-path: Content-Disposition: inline In-Reply-To: <20120411124810.GK4296-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Daniel Vetter Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Stephen Warren , Joerg Roedel , devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Jon Mayo , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Colin Cross , Hiroshi Doyu List-Id: devicetree@vger.kernel.org --M/SuVGWktc5uNpra Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Daniel Vetter wrote: > On Wed, Apr 11, 2012 at 02:10:30PM +0200, Thierry Reding wrote: > > This commit adds a very basic DRM driver for NVIDIA Tegra SoCs. It > > currently has rudimentary GEM support and can run a console on the > > framebuffer as well as X using the xf86-video-modesetting driver. > > Only the RGB output is supported. Quite a lot of things still need > > to be worked out and there is a lot of room for cleanup. >=20 > Indeed, after a quick look there are tons of functions that are just stubs > ;-) One thing I wonder though is why you directly use the iommu api and > not wrap it up into dma_map? Is arm infrastructure just not there yet or > do you plan to tightly integrate the tegra drm with the iommu (e.g. for > process space switching or similarly funky stuff)? I'm not sure I know what you are referring to. Looking for all users of iommu_map() doesn't turn up anything related to dma_map. Can you point me in the right direction? Thierry --M/SuVGWktc5uNpra Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAk+Fhc4ACgkQZ+BJyKLjJp+LVQCfesei0j/HAdikMOmTFtyn79Fx aCQAn3VTdR3oH6SfLGQa/X22D8gotx17 =P3bM -----END PGP SIGNATURE----- --M/SuVGWktc5uNpra--