Add Super I/O (motherboard) fan support via hwmon - #2120
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Auto-detect Super I/O chips (Nuvoton/ITE/Fintek/Winbond/SMSC) through hwmon in addition to the Steam Deck fan, and add a fan_custom_sensor option to select specific chip,input[,label] sensors (multi-fan capable). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Keep 'fan' for the Steam Deck APU fan and add a new 'cfan' element for custom / Super I/O chip fans. cfan auto-detects a Super I/O chip or uses fan_custom_sensor; update_fan() now resolves fan_sensors (Steam Deck) and cfan_sensors (Super I/O) separately. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
cfan now uses its own cfan_color (default eb5b5b) instead of sharing fan_color. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Make the custom-sensor options symmetric: fan_custom_sensor drives the 'fan' element (else Steam Deck auto-detect) and cfan_custom_sensor drives 'cfan' (else Super I/O auto-detect). Both share a parser via a parse_cfan_custom_sensor alias. Also fixes update_fan() so it runs when either fan or cfan is enabled. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
These two were missing from the color fix-up array, so their red and blue channels were swapped when rendered. Add them and bump the array size 24->26. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
cfanoverlay element that auto-detects and reads chassis/CPU/system fan RPM from Super I/O chips (Nuvoton/ITE/Fintek/Winbond/SMSC) via Linuxhwmon, independent of the existing Steam Deck-onlyfanelementfan_custom_sensor/cfan_custom_sensorconfig options (shared parser) to manually pick a specificchip,input[,label]sensor, supporting multiple labelled fanscfan_colorso the new element's label isn't forced to sharefan_colorfan_color/cfan_colorwere missing from the 0xRRGGBB→ImGui color swizzle table (red/blue channels were swapped)Details
See
FAN_SUPERIO.mdfor the full rationale and a before/after table of touched files.Test plan
cfan=1auto-detects and displays a sensible RPMcfan_custom_sensorselects a specific chip/input and supports multiple fansfan(Steam Deck) behavior is unchangedfan_color/cfan_colorrender with correct (non-swapped) RGBDisclosure: This code and PR description were written with the help of an AI coding assistant (Claude).