From mboxrd@z Thu Jan 1 00:00:00 1970 From: Damien Lespiau Subject: Re: AVI infoframes: default aspect ratio/VIC for CEA modes Date: Thu, 21 Nov 2013 17:28:35 +0000 Message-ID: <20131121172835.GC26262@strange.amr.corp.intel.com> References: <82115773F5CCE44DA5B6CE8B3878B6F027E4EDB2@FMSMSX106.amr.corp.intel.com> <20131120221155.GA24799@strange.amr.corp.intel.com> <20131120222057.GB24799@strange.amr.corp.intel.com> <82115773F5CCE44DA5B6CE8B3878B6F027E4EF4A@FMSMSX106.amr.corp.intel.com> <20131121003731.GA26262@strange.amr.corp.intel.com> <82115773F5CCE44DA5B6CE8B3878B6F027E500F6@FMSMSX106.amr.corp.intel.com> <20131121171945.GB10036@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: <20131121171945.GB10036@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org To: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Cc: "Gohad, Tushar" , "intel-gfx@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" List-Id: intel-gfx@lists.freedesktop.org On Thu, Nov 21, 2013 at 07:19:45PM +0200, Ville Syrj=E4l=E4 wrote: > > > It seems natural to extend those flags to describe the picture aspect= ratio (that > > > why dri-devel is in Cc., touching core DRM). > > = > > To start with we can use a single bit in drm_display_mode->flags to dis= tinguish 16:9 vs 4:3. > = > I must admit I haven't really looked into the matter, but do we actually > need any mode bits? Would it be enoguh to just have a property that > allows the user to specify the picture aspect ratio? Well, that's a good question! the picture aspect ratio is attached to modes in CEA-861, but it could be a good idea to have an orthogonal picture a-r property on the crtc. Not quite sure at this point, needs a bit more understanding of the problem. -- = Damien