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feat(profiles): add Valve Steam Deck gamepad - #89

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feat(profiles): add Valve Steam Deck gamepad#89
ReenigneArcher wants to merge 6 commits into
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feat/steam-controller

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@ReenigneArcher

@ReenigneArcher ReenigneArcher commented Aug 17, 2026 •
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Description

Introduces a native Steam Deck controller profile (VID 0x28DE, PID 0x1205) across all supported backends:

  • New GamepadProfileKind::steam_deck enum value and profiles::steam_deck() factory
  • 64-byte vendor HID descriptor, native state packet packing (buttons, sticks, triggers, touch, motion)
  • SteamDeckFeatureReportState shared helper for feature-report initialization (serial query, desktop-mapping commands, rumble via 0xEB)
  • Linux uhid backend: 4 ms periodic reports, SET/GET feature handling, serial seeding from stable_id
  • Windows backend: periodic state re-submission thread, feature-report responder, VHF queue dedup on button bytes
  • FreeBSD uses uinput path for Steam Deck (same as Xbox/Switch)
  • Four rear paddles (L4/R4/L5/R5) exposed via supported_rear_paddle_count = 4, Quick Access mapped to misc1
  • Protocol constant LVH_WINDOWS_GAMEPAD_STEAM_DECK = 7, broker validation updated
  • Full unit and consumer tests on Linux, Windows, and FreeBSD backends

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Issues Fixed or Closed

Roadmap Issues

Type of Change

  • feat: New feature (non-breaking change which adds functionality)
  • fix: Bug fix (non-breaking change which fixes an issue)
  • docs: Documentation only changes
  • style: Changes that do not affect the meaning of the code (white-space, formatting, missing semicolons, etc.)
  • refactor: Code change that neither fixes a bug nor adds a feature
  • perf: Code change that improves performance
  • test: Adding missing tests or correcting existing tests
  • build: Changes that affect the build system or external dependencies
  • ci: Changes to CI configuration files and scripts
  • chore: Other changes that don't modify src or test files
  • revert: Reverts a previous commit
  • BREAKING CHANGE: Introduces a breaking change (can be combined with any type above)

Checklist

  • Code follows the style guidelines of this project
  • Code has been self-reviewed
  • Code has been commented, particularly in hard-to-understand areas
  • Code docstring/documentation-blocks for new or existing methods/components have been added or updated
  • Unit tests have been added or updated for any new or modified functionality

AI Usage

See our AI usage policy.

  • None: No AI tools were used in creating this PR
  • Light: AI provided minor assistance (formatting, simple suggestions)
  • Moderate: AI helped with code generation or debugging specific parts
  • Heavy: AI generated most or all of the code changes

@codecov

codecov Bot commented Aug 17, 2026 •
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❌ 1 Tests Failed:

Tests completed Failed Passed Skipped
202 1 201 2
View the top 1 failed test(s) by shortest run time 
LinuxConsumerTest::SdlSeesSteamDeckCanonicalButtonsAndRumble
Stack Traces | 3.04s run time 
.../tests/unit/test_linux_consumers.cpp:530
Expected: (joystick_index) >= (0), actual: -1 vs 0

To view more test analytics, go to the Test Analytics Dashboard
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@ReenigneArcher
feat(profiles): add Valve Steam Deck gamepad
ed138c9 
Introduces a native Steam Deck controller profile (VID 0x28DE, PID 0x1205) across all supported backends:

- New `GamepadProfileKind::steam_deck` enum value and `profiles::steam_deck()` factory
- 64-byte vendor HID descriptor, native state packet packing (buttons, sticks, triggers, touch, motion)
- `SteamDeckFeatureReportState` shared helper for feature-report initialization (serial query, desktop-mapping commands, rumble via `0xEB`)
- Linux uhid backend: 4 ms periodic reports, SET/GET feature handling, serial seeding from stable_id
- Windows backend: periodic state re-submission thread, feature-report responder, VHF queue dedup on button bytes
- FreeBSD uses uinput path for Steam Deck (same as Xbox/Switch)
- Four rear paddles (L4/R4/L5/R5) exposed via `supported_rear_paddle_count = 4`, Quick Access mapped to `misc1`
- Protocol constant `LVH_WINDOWS_GAMEPAD_STEAM_DECK = 7`, broker validation updated
- Full unit and consumer tests on Linux, Windows, and FreeBSD backends
@sonarqubecloud

sonarqubecloud Bot commented Aug 18, 2026

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Quality Gate Failed Quality Gate failed

Failed conditions
5 New issues
5 New Code Smells (required ≤ 0)

See analysis details on SonarQube Cloud

Catch issues before they fail your Quality Gate with our IDE extension SonarQube for IDE

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