From: Pekka Paalanen <ppaalanen@gmail.com>
To: Werner Sembach <wse@tuxedocomputers.com>
Cc: Simon Ser <contact@emersion.fr>,
amd-gfx@lists.freedesktop.org, sunpeng.li@amd.com,
intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, airlied@linux.ie,
tzimmermann@suse.de, rodrigo.vivi@intel.com,
alexander.deucher@amd.com, christian.koenig@amd.com
Subject: Re: [PATCH v4 09/17] drm/uAPI: Add "active color range" drm property as feedback for userspace
Date: Wed, 23 Jun 2021 14:14:23 +0300 [thread overview]
Message-ID: <20210623141423.3f6c3e9f@eldfell> (raw)
In-Reply-To: <5947f768-dd87-6b39-ecfc-b7c4aaa88aca@tuxedocomputers.com>
[-- Attachment #1: Type: text/plain, Size: 1387 bytes --]
On Wed, 23 Jun 2021 12:17:40 +0200
Werner Sembach <wse@tuxedocomputers.com> wrote:
> Am 23.06.21 um 09:32 schrieb Pekka Paalanen:
> > On Tue, 22 Jun 2021 11:48:52 +0000
> > Simon Ser <contact@emersion.fr> wrote:
> >
> >> On Tuesday, June 22nd, 2021 at 11:50, Werner Sembach <wse@tuxedocomputers.com> wrote:
> >>
> >>> Unknown is when no monitor is connected or is when the
> >>> connector/monitor is disabled.
> >> 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.
> > That sounds fine to me.
>
> 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.
>
> 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
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
next prev parent reply other threads:[~2021-06-23 11:14 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-18 9:10 [PATCH v4 00/17] New uAPI drm properties for color management Werner Sembach
2021-06-18 9:11 ` [PATCH v4 01/17] drm/amd/display: Remove unnecessary SIGNAL_TYPE_HDMI_TYPE_A check Werner Sembach
2021-06-18 9:11 ` [PATCH v4 02/17] drm/amd/display: Add missing cases convert_dc_color_depth_into_bpc Werner Sembach
2021-06-18 9:11 ` [PATCH v4 03/17] drm/uAPI: Add "active bpc" as feedback channel for "max bpc" drm property Werner Sembach
2021-06-22 6:46 ` Pekka Paalanen
2021-06-28 17:03 ` Werner Sembach
2021-06-29 11:02 ` Werner Sembach
2021-06-30 8:21 ` Pekka Paalanen
2021-06-30 9:42 ` Werner Sembach
2021-07-01 7:42 ` Pekka Paalanen
2021-07-01 11:30 ` Werner Sembach
2021-07-14 18:18 ` Werner Sembach
2021-07-15 9:10 ` Pekka Paalanen
2021-06-18 9:11 ` [PATCH v4 04/17] drm/amd/display: Add handling for new "active bpc" property Werner Sembach
2021-06-18 9:11 ` [PATCH v4 05/17] drm/i915/display: " Werner Sembach
2021-06-18 9:11 ` [PATCH v4 06/17] drm/uAPI: Add "active color format" drm property as feedback for userspace Werner Sembach
2021-06-22 6:48 ` Pekka Paalanen
2021-06-18 9:11 ` [PATCH v4 07/17] drm/amd/display: Add handling for new "active color format" property Werner Sembach
2021-06-18 9:11 ` [PATCH v4 08/17] drm/i915/display: " Werner Sembach
2021-06-18 9:11 ` [PATCH v4 09/17] drm/uAPI: Add "active color range" drm property as feedback for userspace Werner Sembach
2021-06-22 7:00 ` Pekka Paalanen
2021-06-22 9:50 ` Werner Sembach
2021-06-22 11:48 ` Simon Ser
2021-06-23 7:32 ` Pekka Paalanen
2021-06-23 10:17 ` Werner Sembach
2021-06-23 11:14 ` Pekka Paalanen [this message]
2021-06-23 11:19 ` Werner Sembach
2021-06-18 9:11 ` [PATCH v4 10/17] drm/amd/display: Add handling for new "active color range" property Werner Sembach
2021-06-18 9:11 ` [PATCH v4 11/17] drm/i915/display: " Werner Sembach
2021-06-18 9:11 ` [PATCH v4 12/17] drm/uAPI: Add "preferred color format" drm property as setting for userspace Werner Sembach
2021-06-22 7:15 ` Pekka Paalanen
2021-06-29 8:12 ` Simon Ser
2021-06-29 11:17 ` Pekka Paalanen
2021-06-29 11:39 ` Werner Sembach
2021-06-30 8:41 ` Pekka Paalanen
2021-06-30 9:20 ` Werner Sembach
2021-07-01 8:07 ` Pekka Paalanen
2021-07-01 12:50 ` Werner Sembach
2021-07-01 13:24 ` Pekka Paalanen
2021-07-05 15:49 ` Werner Sembach
2021-07-06 7:09 ` Pekka Paalanen
2021-07-14 17:59 ` Werner Sembach
2021-06-18 9:11 ` [PATCH v4 13/17] drm/amd/display: Add handling for new "preferred color format" property Werner Sembach
2021-06-18 9:11 ` [PATCH v4 14/17] drm/i915/display: " Werner Sembach
2021-06-18 9:11 ` [PATCH v4 15/17] drm/uAPI: Move "Broadcast RGB" property from driver specific to general context Werner Sembach
2021-06-22 7:25 ` Pekka Paalanen
2021-06-22 9:57 ` Werner Sembach
2021-06-23 7:48 ` Pekka Paalanen
2021-06-23 10:10 ` Werner Sembach
2021-06-23 11:26 ` Pekka Paalanen
2021-06-25 8:48 ` Werner Sembach
2021-06-18 9:11 ` [PATCH v4 16/17] drm/i915/display: Use the general "Broadcast RGB" implementation Werner Sembach
2021-06-18 9:11 ` [PATCH v4 17/17] drm/amd/display: Add handling for new "Broadcast RGB" property Werner Sembach
2021-06-22 7:29 ` Pekka Paalanen
2021-06-22 9:28 ` Werner Sembach
2021-06-23 8:01 ` Pekka Paalanen
2021-06-23 9:58 ` Werner Sembach
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210623141423.3f6c3e9f@eldfell \
--to=ppaalanen@gmail.com \
--cc=airlied@linux.ie \
--cc=alexander.deucher@amd.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=christian.koenig@amd.com \
--cc=contact@emersion.fr \
--cc=dri-devel@lists.freedesktop.org \
--cc=intel-gfx@lists.freedesktop.org \
--cc=linux-kernel@vger.kernel.org \
--cc=rodrigo.vivi@intel.com \
--cc=sunpeng.li@amd.com \
--cc=tzimmermann@suse.de \
--cc=wse@tuxedocomputers.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).