linux-kernel - Re: [PATCH v2] drm/amd/display: Add pixel encoding info to debugfs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Wed, 22 May 2024 13:40:36 +0000
From: Simon Ser <contact@...rsion.fr>
To: Mario Limonciello <mario.limonciello@....com>
Cc: Rino André Johnsen <rinoandrejohnsen@...il.com>, Christian König <christian.koenig@....com>, alexander.deucher@....com, Harry Wentland <harry.wentland@....com>, Leo Li <sunpeng.li@....com>, Rodrigo Siqueira <Rodrigo.Siqueira@....com>, "Pan, Xinhui" <Xinhui.Pan@....com>, David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, Aurabindo Pillai <aurabindo.pillai@....com>, Hersen Wu <hersenxs.wu@....com>, Hamza Mahfooz <hamza.mahfooz@....com>, Wayne Lin <wayne.lin@....com>, Srinivasan Shanmugam <srinivasan.shanmugam@....com>, Fangzhi Zuo <jerry.zuo@....com>, Tom Chung <chiahsuan.chung@....com>, Nicholas Kazlauskas <nicholas.kazlauskas@....com>, amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/amd/display: Add pixel encoding info to debugfs

On Wednesday, May 22nd, 2024 at 15:36, Mario Limonciello <mario.limonciello@....com> wrote:

> > To be perfectly honest with you, I haven't given that much though. I
> > used the 'bpc' and 'colorspace' property in debugfs, since I could not
> > find that information anywhere else. And since I also needed to verify
> > the pixel encoding being used, I added it where those other values
> > were. That made for a simple and easy addition for this property.
> > 
> > If you want me to do this differently, let me know. And please point
> > me to the standardized DRM property where I should expose the values.

FWIW, there is a patch from Andri to add a similar (?) property:
https://lore.kernel.org/dri-devel/20240115160554.720247-1-andri@yngvason.is/

The patch also allows user-space to set the "pixel encoding".