/*
    * AcpiVideo.hpp
    * ACPI video extensions (_BCL/_BCM/_BQC) panel brightness fallback
    * Copyright (c) 2026 Daniel Hammer
*/

#pragma once
#include <cstdint>

namespace Hal {
    namespace AcpiVideo {

        // Panel brightness through the firmware's ACPI video output device,
        // for machines no native backlight driver covers (a panel wired to a
        // discrete GPU, a GPU Montauk has no driver for). percent < 0 queries;
        // otherwise the nearest level the firmware lists is selected. Returns
        // the resulting 0..100, -1 when the firmware has no brightness
        // methods, -2 when evaluating them failed. Discovery runs on first
        // use. May sleep (AML).
        int Brightness(int percent);

    };
};