Grace Atwood 1df9d60fa9 Add Gigabyte AORUS RTX 5080 MASTER GPU controller ...

New controller for RTX 5080 AORUS MASTER 16G (GV-N5080AORUS M-16GD) with
per-LED fan ring control. This GPU uses a different protocol than legacy
RGB Fusion 2 cards and requires a separate controller.

Hardware info:
- PCI Device ID: 0x2C02 (NVIDIA Blackwell)
- Subsystem ID: 0x4178
- I2C Address: 0x71

LED configuration:
- 3 fan rings × 8 LEDs each = 24 fan LEDs
- 1 logo LED
- Total: 25 individually addressable zones

Protocol details (reverse engineered from Gigabyte Control Center on Windows):
- Mode command (0x88) must include zone selector byte (0x02/0x05/0x06)
- Each fan requires mode command before color registers will respond
- Color registers: 0xB0-0xB3 (left), 0xB4-0xB7 (middle), 0xB8-0xBB (right)
- Logo: 0xBC with mode byte 0x00 (fans use 0x01)
- Apply command (0xAA) must be sent after each zone for multi-zone updates

Verified working on Linux with i2ctransfer and OpenRGB CLI:
- All 24 fan LEDs individually addressable
- Logo LED working
- Color cycling and per-LED gradients tested

Note: Fan LEDs only illuminate when fans are spinning.

2026-01-20 18:58:25 -06:00

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pci_ids.h

Add Gigabyte AORUS RTX 5080 MASTER GPU controller

2026-01-20 18:58:25 -06:00