Techwell TW68xx analog video capture cards
A family of PCI analog video capture and frame-grabber chips (TW6800, TW6801, TW6804, TW6816) used in 4-channel DVR and surveillance cards with BNC composite inputs. These boards were typically sold in the mid-2000s for Windows XP-era CCTV systems and have largely been replaced by IP cameras and HD-SDI/HDMI capture hardware.
recommendation
A candidate for future removal because the underlying hardware is a legacy analog surveillance product that is no longer sold for new designs, public Linux probe data shows only a handful of systems still running these cards, and upstream activity in the past five years amounts to a couple of incidental patches rather than real feature work. It is not an immediate removal target, though, since there is no in-tree replacement for owners of these specific PCI cards, so keeping it for now while flagging it for eventual retirement is reasonable.
repository signals
sources
- lore.kernel.org
tw68-core.c still saw a 2025 touch, but it was part of a 100-file treewide maintainer-email update rather than device-specific feature work.
- lore.kernel.org
A 2025 patch touched tw68-core.c, showing the driver is not entirely abandoned, but the visible activity level is very low and not evidence of broad active development.
- cateee.net
CONFIG_VIDEO_TW68 covers Techwell tw68x frame-grabber hardware and PCI IDs 1797:6800/6801/6804/6810-6813; the driver remains buildable in current kernels.
- eprom.com
The marketed hardware is a legacy PCI 4-channel DVR/video-capture card based on the TW6800, with Windows 2000/XP-era requirements and analog BNC inputs.
- linux-hardware.org
Recent public Linux probe data shows only a handful of observed TW6816 systems, consistent with very low present-day deployment.
codex reasoning notes (technical)
Local `rg`/`sed` on Kconfig and tw68-core.c identified a real V4L2 PCI frame-grabber driver for Techwell TW68xx chips. `lore_file_timeline` on `drivers/media/pci/tw68/tw68-core.c` showed only 5 hits in the last 5 years, mostly treewide churn plus one patch; no removal discussion was found in the visible lore evidence. `web.search` + `web.open` on LKDDb, EPROM, and linux-hardware established the supported PCI IDs, legacy analog PCI surveillance-card use case, and low current field presence. Hardware appears legacy and not a 2025 new-design part, but there is no natural in-tree replacement for the same cards, so deprecate rather than remove.