Initial commit for Linux-only controller for Valve Steam Machine using

the leds-valve kernel module and sysfs interface

Controllers/ValveSteamMachineController/ValveSteamMachineController_Linux.h

@@ -0,0 +1,51 @@
+/*---------------------------------------------------------*\
+| ValveSteamMachineController_Linux.h                       |
+|                                                           |
+|   Driver for Valve Steam Machine LEDs                     |
+|                                                           |
+|   Adam Honse (calcprogrammer1@gmail.com)      23 Jul 2026 |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-or-later               |
+\*---------------------------------------------------------*/
+
+#pragma once
+
+#include <fstream>
+#include <string>
+#include <vector>
+
+class ValveSteamMachineController
+{
+public:
+    ValveSteamMachineController(std::string dev_name);
+    ~ValveSteamMachineController();
+
+    std::string                 GetName();
+
+    void                        AddLED(std::string led_path);
+    size_t                      GetLEDCount();
+
+    std::string                 GetLEDPath(unsigned int led_idx);
+
+    std::vector<std::string>    GetAvailableEffects();
+    bool                        SupportsEffects();
+
+    void                        SetLEDColor(unsigned int led_idx, unsigned char red, unsigned char grn, unsigned char blu);
+    void                        SetLEDEffect(unsigned int led_idx, std::string effect);
+    void                        SetEffect(std::string effect);
+    void                        SetBrightness(unsigned int brightness);
+    void                        SetDelay(unsigned int delay);
+
+private:
+    std::string                 name;
+    std::vector<std::string>    led_paths;
+    std::vector<std::ofstream>  led_brightness;
+    std::vector<std::ofstream>  led_multi_intensity;
+    std::vector<std::ofstream>  led_effect;
+    std::ofstream               led_brightness_scale;
+    std::ofstream               led_delay;
+    std::vector<std::string>    available_effects;
+
+    void                        ReadAvailableEffects(std::string first_led_path);
+};