From mboxrd@z Thu Jan 1 00:00:00 1970 From: "james qian wang (Arm Technology China)" Subject: Re: [PATCH] drm/komeda: Adds output-color format/depth support Date: Fri, 27 Sep 2019 02:22:24 +0000 Message-ID: <20190927022218.GA11732@jamwan02-TSP300> References: <20190920094329.17513-1-lowry.li@arm.com> <20190923121604.jqi6ewln27yvdajw@DESKTOP-E1NTVVP.localdomain> <20190924021313.GA15776@jamwan02-TSP300> <20190925094810.fbeyt7fxvyhaip33@DESKTOP-E1NTVVP.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20190925094810.fbeyt7fxvyhaip33@DESKTOP-E1NTVVP.localdomain> Content-Language: en-US Content-ID: Sender: linux-kernel-owner@vger.kernel.org To: Brian Starkey Cc: "Lowry Li (Arm Technology China)" , Liviu Dudau , "maarten.lankhorst@linux.intel.com" , "seanpaul@chromium.org" , "airlied@linux.ie" , Mihail Atanassov , "Julien Yin (Arm Technology China)" , "Jonathan Chai (Arm Technology China)" , Ayan Halder , "dri-devel@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" , nd List-Id: dri-devel@lists.freedesktop.org On Wed, Sep 25, 2019 at 09:48:11AM +0000, Brian Starkey wrote: > Hi James, >=20 > On Tue, Sep 24, 2019 at 02:13:27AM +0000, james qian wang (Arm Technology= China) wrote: > >=20 > > Hi Brian: > >=20 > > Since one monitor can support mutiple color-formats, this DT property > > supply a way for user to select a specific one from this supported > > color-formats. >=20 > Modifying DT is a _really_ user-unfriendly way of specifying > preferences. If we want a user to be able to pick a preferred format, > then it should probably be via the atomic API as Ville mentioned. > Hi Brian: Agree, a drm UPAI might be the best & right way for this. I can raise a new thread/topic to discuss the "HOW TO", maybe after the Chinese national day. LAST: what do you think about this patch: - Just drop it, waiting for the new uapi - or keep it, and replace it once new uapi is ready. Thanks James > Cheers, > -Brian