Add some fixes for fixing hw timestamp on some Logitech and Sunplus cameras. The issues have been previously reported to the manufacturers. Also include a patch to fix the current hw timestamping logic for ANY uvc 1.5 model running at under 16 fps. To: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> To: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> Cc: linux-media@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Cc: hn.chen <hn.chen@xxxxxxxxxxxxx> Tested-by: HungNien Chen <hn.chen@xxxxxxxxxxxxx> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> --- Changes in v2: - Require 1/4 sec of data before using the hw timestamps - Add Tested-by SunplusIT - Link to v1: https://lore.kernel.org/r/20220920-resend-hwtimestamp-v1-0-e9c14b258404@xxxxxxxxxxxx --- Ricardo Ribalda (8): media: uvc: Extend documentation of uvc_video_clock_decode() media: uvc: Allow quirking by entity guid media: uvc: Create UVC_QUIRK_IGNORE_EMPTY_TS quirk media: uvcvideo: Quirk for invalid dev_sof in Logi C922 media: uvcvideo: Quirk for autosuspend in Logi C910 media: uvcvideo: Allow hw clock updates with buffers not full media: uvcvideo: Refactor clock circular buffer media: uvcvideo: Fix hw timestampt handling for slow FPS drivers/media/usb/uvc/uvc_driver.c | 63 ++++++++++++++++++ drivers/media/usb/uvc/uvc_video.c | 127 ++++++++++++++++++++++++------------- drivers/media/usb/uvc/uvcvideo.h | 4 ++ 3 files changed, 150 insertions(+), 44 deletions(-) --- base-commit: 521a547ced6477c54b4b0cc206000406c221b4d6 change-id: 20220920-resend-hwtimestamp-b3e22729284d Best regards, -- Ricardo Ribalda <ribalda@xxxxxxxxxxxx>