Case study

redmi-perf: reconstructing Redmi laptop performance-mode control

redmi-perf reconstructs performance-mode control on Xiaomi and Redmi laptops through the MIFS WMI interface to the embedded controller. Its notes map request bytes, firmware responses and mode values; a kernel module exposes the interface, while an optional NVIDIA ACPI shim fills response fields the author says the firmware omits.

Targets: Firmware · Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08

Stars: 1
Last commit: 2026-11-05
Language: Shell
License (GitHub): GPL-2.0

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: Building the module requires DKMS, build tools, matching kernel headers and cargo.
Prerequisites: Turbo and full-speed modes require the DC barrel charger; the optional NVPCF shim replaces the NVIDIA kernel module.
Testing evidence: The reported working setup is Redmi G Pro 2024 TM2211 with Ubuntu 26.04, kernel 7.0.0-42 and NVIDIA 595.112.07; other models are unvalidated.
License: GPL-2.0-only.

Cite

BibTeX

@misc{redmi-perf-case,
  title = {{redmi-perf: reconstructing Redmi laptop performance-mode control}},
  howpublished = {\url{https://github.com/wanxinhao/redmi-perf}},
  url = {https://github.com/wanxinhao/redmi-perf},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/redmi-perf-case/}}
}

Plain text

redmi-perf: reconstructing Redmi laptop performance-mode control. https://github.com/wanxinhao/redmi-perf (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/redmi-perf-case/

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Primary sources

docs/reverse-engineering.md GitHub · wanxinhao/redmi-perf · Revision 98f90e4
README.md GitHub · wanxinhao/redmi-perf · Revision 98f90e4