driver/src/backlight_manager.h

// Copyright 2022 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef FUCHSIA_DRIVERS_MISC_GOOGLE_BACKLIGHT_SRC_BACKLIGHT_MANAGER_H_
#define FUCHSIA_DRIVERS_MISC_GOOGLE_BACKLIGHT_SRC_BACKLIGHT_MANAGER_H_

#include <fidl/fuchsia.hardware.acpi/cpp/wire.h>
#include <lib/driver/logging/cpp/logger.h>

namespace backlight_driver {
constexpr std::string_view kLedRead = "KBQC";
constexpr std::string_view kLedWrite = "KBCM";

class BacklightManager {
 public:
  BacklightManager(fdf::Logger* logger,
                   fidl::ClientEnd<fuchsia_hardware_acpi::Device> acpi_client)
      : logger_(logger), acpi_device_client_(std::move(acpi_client)) {}
  ~BacklightManager() = default;

  zx::result<> SetBacklight(uint64_t value);
  zx::result<uint64_t> GetBacklight();

 private:
  fdf::Logger* logger_;
  fidl::WireSyncClient<fuchsia_hardware_acpi::Device> acpi_device_client_;
};
}  // namespace backlight_driver

#endif  // FUCHSIA_DRIVERS_MISC_GOOGLE_BACKLIGHT_SRC_BACKLIGHT_MANAGER_H_