Intel Integrated Sensor Hub Transport Protocol (ISHTP)
A transport and bus layer that lets Linux communicate with Intel's Integrated Sensor Hub, a small always-on coprocessor built into Intel client CPUs from roughly Skylake and Cherry Trail through Comet Lake, Lunar Lake, and the upcoming Panther Lake. The sensor hub handles laptop and tablet sensors such as accelerometers, gyroscopes, and lid-angle detection without waking the main CPU.
recommendation
It should stay in the kernel because it is the dedicated transport bus that lets the OS talk to Intel's Integrated Sensor Hub, the always-on microcontroller that handles accelerometers, lid/hinge sensors, and similar low-power sensors on modern Intel laptops. Upstream activity is steady, kernel documentation covers firmware loading for Lunar Lake, and Dell's 2026 Panther Lake XPS launch shows new hardware still depends on it, so there is no replacement to migrate to.
repository signals
sources
- docs.kernel.org
Current upstream kernel documentation describes ISHTP as the transport layer for Intel ISH and includes host firmware loading for Lunar Lake and later, indicating ongoing upstream relevance rather than a legacy-only path.
- cateee.net
LKDDb shows CONFIG_INTEL_ISH_HID remains present in current kernels and lists supported PCI IDs including Comet Lake Integrated Sensor Solution, showing deployment beyond the original Cherry Trail/Skylake era.
- phoronix.com
A February 2, 2026 report ties Intel ISH firmware enablement to new Dell Panther Lake XPS laptops shipping in 2026, supporting that ISH-backed systems are still entering the market.
codex reasoning notes (technical)
Real driver directory: local shell inspection found 7 C files under drivers/hid/intel-ish-hid/ishtp and Kconfig/help text identifies Intel Integrated Sensor Hub transport support. Lore-specific tooling was unavailable here (MCP server absent; `lei` not installed), so I used the provided static history signals as the upstream-activity baseline: 32 substantive commits in 5 years, 15 authors, most recent substantive touch 2026-02-02, with no evidence of removal talk found in web searches. URLs were obtained via web search (`turn3search2`, `turn0search1`, `turn4search1`). No natural replacement driver exists because ISHTP is the dedicated transport/bus layer for Intel ISH rather than a redundant implementation. Recommendation stays `keep`: active maintenance plus documented Lunar Lake support and 2026 Panther Lake laptop deployment argue against deprecation.