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Wed, 23 Jun 2021 04:14:34 -0700 (PDT) Date: Wed, 23 Jun 2021 14:14:23 +0300 From: Pekka Paalanen To: Werner Sembach Message-ID: <20210623141423.3f6c3e9f@eldfell> In-Reply-To: <5947f768-dd87-6b39-ecfc-b7c4aaa88aca@tuxedocomputers.com> References: <20210618091116.14428-1-wse@tuxedocomputers.com> <20210618091116.14428-10-wse@tuxedocomputers.com> <20210622100042.4041624a@eldfell> <56d079d4-841a-0ca5-b8a6-d2c10f91d211@tuxedocomputers.com> <20210623103256.01d680ba@eldfell> <5947f768-dd87-6b39-ecfc-b7c4aaa88aca@tuxedocomputers.com> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Subject: Re: [Intel-gfx] [PATCH v4 09/17] drm/uAPI: Add "active color range" drm property as feedback for userspace X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: sunpeng.li@amd.com, Simon Ser , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, airlied@linux.ie, amd-gfx@lists.freedesktop.org, tzimmermann@suse.de, alexander.deucher@amd.com, christian.koenig@amd.com Content-Type: multipart/mixed; boundary="===============0610544509==" Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" --===============0610544509== Content-Type: multipart/signed; boundary="Sig_/gPEvcW1kQm+Ybq.N/v+Zg1q"; protocol="application/pgp-signature"; micalg=pgp-sha256 --Sig_/gPEvcW1kQm+Ybq.N/v+Zg1q Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 23 Jun 2021 12:17:40 +0200 Werner Sembach wrote: > Am 23.06.21 um 09:32 schrieb Pekka Paalanen: > > On Tue, 22 Jun 2021 11:48:52 +0000 > > Simon Ser wrote: > > =20 > >> On Tuesday, June 22nd, 2021 at 11:50, Werner Sembach wrote: > >> =20 > >>> Unknown is when no monitor is connected or is when the > >>> connector/monitor is disabled. =20 > >> I think the other connector props (link-status, non-desktop, etc) don't > >> have a special "unset" value, and instead the value is set to a random > >> enum entry. User-space should ignore the prop on these disconnected > >> connectors anyways. =20 > > That sounds fine to me. =20 >=20 > Currently the only case for "not applicable" is when the monitor is > disconnected, but sicne the properties are so interdependent, there > might be a case in the future where e.g. a color format that has no > differentiation between full and limited arises. When there is no > special unset/not applicable option, the userspace has to know > exactly when an option is valid or not, possible requiring additional > logic. >=20 > Setting a "not applicable" value allows userspace to be more dumb, > without much hassle on the kernelspace side. That's a good point too. So "not applicable" would be a value, but "unknown" would not be. Thanks, pq --Sig_/gPEvcW1kQm+Ybq.N/v+Zg1q Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEJQjwWQChkWOYOIONI1/ltBGqqqcFAmDTF48ACgkQI1/ltBGq qqe5aBAAqjWygSQjmKD6D7wupf6+Ir2Pto1tmAW7ioCbPvk4RutUtuKzbT4WoBku RtE2pHxKp2SiqKyo8rjRfgOR2gvDdOmfuKI5yfdKfPDZKhiyNIA2Wpyx9ntnFS+f HGVdWVFTJh61TfNtqC0FQqvEASiRPC7mnu9GzLtb69DU/0Jdu+NlALsH2FIYo1lb 4+HpBXhq1sd3EsgqnWbnC8BquKmH0Whea27uEidyo0B1VdHdT+vDEJzc0juN7TSo xs3us/rckFCEkhP0dASPe9ieWsYfUQIklQw1oKb/4WHHy0O9lyW5x0qABTbD34oF jOy9byLTiWmXQuR9zLpiW24Qo6n58hRTQ2+10mFPif7j/brhobX/k1js+cO9sDRJ +BkFsAJ0eU+cajpPi/lUGMgyTRPTT49yv1tjfzwsZihnH02Att+PtlXuCdmAei2/ 6imtfO3ETUcbyqgbmOeqPkY4dXqY7bhRCt82KCmAf1Bx/gJz2rhrBOjwhwJbXTeF NwcsWiFljcfSE118AJlkdHDGXnq+NaXNIqbfeOTYN0moUePis31A8+j78AEtFkAh dapDvoirU08Z2MgQAElb3HfD9EZf+en8s7JvPn/VTCi7jxMVBUPqyzZf8pceQVwU Vh7z8kFjqJKrRwBOSp6EpGnKYW244wCIc/24cUwx34e4MmOWmNc= =r73d -----END PGP SIGNATURE----- --Sig_/gPEvcW1kQm+Ybq.N/v+Zg1q-- --===============0610544509== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx --===============0610544509==--