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From: Scott K Logan <logans@cottsay.net>
Subject: [PATCH 0/1] media: uvcvideo: Add quirk for exponential exposure
Date: Sun, 03 Oct 2021 02:36:54 +0000 (UTC)
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media: uvcvideo: Add quirk for exponential exposure
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Message
Scott K Logan
Oct. 3, 2021, 2:36 a.m. UTC
Ever since I started using them, I've noticed that the absolute exposure control for the LifeCam webcam hasn't functioned properly. After some poking around, I managed to charactarize the behavior. To summarize, only values which follow an exponential pattern appear to result in the intended change to the webcam's image. Ideally this quirky behavior could be handled with an extension unit, but I'm not sure this behavior can be implemented there. I tested this patch with the two LifeCam webcams I have on hand. Scott K Logan (1): media: uvcvideo: Add quirk for exponential exposure drivers/media/usb/uvc/uvc_ctrl.c | 41 ++++++++++++++++++++++++++++++ drivers/media/usb/uvc/uvc_driver.c | 18 +++++++++++++ drivers/media/usb/uvc/uvcvideo.h | 1 + 3 files changed, 60 insertions(+)