SM8750: AYN Odin 3 - expose the two back paddles as gpio-keys#2940
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aanze wants to merge 1 commit into
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SM8750: AYN Odin 3 - expose the two back paddles as gpio-keys#2940aanze wants to merge 1 commit into
aanze wants to merge 1 commit into
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The Odin 3's two back "macro" paddles (M1, M2) do nothing on stock ROCKNIX because there is no driver for them. They are not on the gamepad MCU UART (rsinput) and not ADC despite AYN's Android "adckey"/keydetect.ko naming - they are plain active-low SoC TLMM GPIOs (M1 = GPIO 3, M2 = GPIO 7), reverse-engineered from AYN's Android keydetect.ko (gpio_request 515/519 = TLMM base 512 + offsets 3/7). Add a gpio-keys node to the Odin 3 dts exposing them as BTN_Z (M1, left) and BTN_C (M2, right) - the spare gamepad codes AYN's own firmware uses and which the existing InputPlumber map (ayn_mcu.yaml) already routes to Left/RightPaddle1, so they become usable paddle buttons in games and Steam.
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loki666
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Jun 28, 2026
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thanks, could you merge this with 0047-arm64-dts-qcom-Add-AYN-Odin3.patch
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Summary
gpio-keysnode to the Odin 3 dts so they report buttons.rsinput) and not ADC despite AYN's Androidadckey/keydetect.konaming — they are plain active-low SoC TLMM GPIOs: M1 (left) = GPIO 3 →BTN_Z, M2 (right) = GPIO 7 →BTN_C(TLMM base 512 + offsets 3/7, RE'd from AYN'skeydetect.ko).BTN_Z/BTN_Care what AYN's firmware uses and what the existingayn_mcu.yamlalready maps to Left/RightPaddle1, so no InputPlumber change is needed.Testing
evtest) with no chatter; left →BTN_Z, right →BTN_C. Pins verified UNCLAIMED before use.Additional Context
<&tlmm 3>,<&tlmm 7>), input + pull-up, 15ms debounce.AI Usage
Did you use AI tools to help write this code? PARTIALLY — reverse-engineering and patch authoring assisted by AI; hardware findings verified on-device.