Intel Touch Host Controller QuickI2C touchscreen and touchpad transport
A transport layer for HID-over-I2C touchpads and touchscreens connected through Intel's Touch Host Controller, an on-chip block found in recent Intel laptop platforms such as the Core Ultra 200V "Lunar Lake" series. It replaces the generic I2C-HID path with one that uses the THC's PCI/ACPI interface and DMA accelerator for lower-latency input on thin-and-light notebooks shipping from 2024 onward.
recommendation
It should stay because this is a brand-new driver, first merged in January 2025 and still gaining device IDs in 2026, that handles a transport unique to recent Intel laptop chipsets (Lunar Lake and successors). The generic i2c-hid driver does not cover the THC accelerator path, so there is no upstream replacement, and Intel is actively shipping new hardware that depends on it.
repository signals
sources
- git.kernel.org
Initial Intel QuickI2C driver skeleton landed in January 2025, showing this is a newly introduced upstream driver rather than legacy code.
- git.kernel.org
The driver was still receiving enablement work in March 2026, adding NVL device IDs.
- cateee.net
LKDDb lists CONFIG_INTEL_QUICKI2C in kernels 6.14 through 6.19-rc+HEAD and maps it to Intel THC PCI IDs including Lunar Lake-M Touch Host Controller devices.
- intel.com
Intel documents Core Ultra 200V series processors (Lunar Lake) as current thin-and-light notebook products, supporting that the matched THC-based hardware family was sold new in 2025.
codex reasoning notes (technical)
Local source inspection shows PCI/ACPI HID-over-I2C code for Intel THC, so this is a real driver. Commit hashes were obtained with shell `git log`; kernel.org commit URLs were then formed from those hashes (canonical recall). The LKDDb and Intel product URLs were obtained via `web.search_query`. A web search for lore removal/deprecation discussion produced no hits, while local git history shows sustained feature and ID additions through 2026; that points to an actively growing platform driver, not an obsolescence candidate. Deployment is `low` because this is limited to newer Intel laptop touch/touchpad designs, but it is clearly not legacy-only. No natural upstream replacement exists for THC QuickI2C; generic `i2c-hid` does not cover the THC transport/accelerator path.