linux-kernel - Re: [PATCH v2 0/8] Add AMD ISP4 driver

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] [day] [month] [year] [list]

Message-ID: <aJ2H6CIyZvN8W2sS@sultan-box>
Date: Wed, 13 Aug 2025 23:53:28 -0700
From: Sultan Alsawaf <sultan@...neltoast.com>
To: Bin Du <Bin.Du@....com>
Cc: mchehab@...nel.org, hverkuil@...all.nl,
	laurent.pinchart+renesas@...asonboard.com,
	bryan.odonoghue@...aro.org, sakari.ailus@...ux.intel.com,
	prabhakar.mahadev-lad.rj@...renesas.com,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	pratap.nirujogi@....com, benjamin.chan@....com, king.li@....com,
	gjorgji.rosikopulos@....com, Phil.Jawich@....com,
	Dominic.Antony@....com, Svetoslav.Stoilov@....com
Subject: Re: [PATCH v2 0/8] Add AMD ISP4 driver

On Wed, Jun 18, 2025 at 05:19:51PM +0800, Bin Du wrote:
> AMD ISP4 Key features:
> - Processes bayer raw data from the connected sensor and output them to different YUV formats
> - Downscale input image to different output image resolution
> - Pipeline to do image processing on the input image including demosaic, denoise, 3A, etc

BTW, another problem I have which I would love some help with: may I get the FW
commands for setting basic 3A parameters?

It seems like the default AE mode does frame-averaging, which is really
unsuitable for video calls on the webcam. My face is really underexposed as a
result during the daytime because there's a lot of ambient light in the
background.

The webcam on this laptop also has a very wide field of view, which makes my
face appear small and shows too much of the background. This also exacerbates
the AE problem.

I'm thinking CMD_ID_SET_ZOOM would fix the FOV problem, and then either
CMD_ID_AE_SET_MODE to change the AE mode or CMD_ID_AE_SET_REGION to set the AE
ROI would fix the exposure problem. What do you think?

Thanks,
Sultan