1 /** 2 * Copyright © 2019 IBM Corporation 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 #include <filesystem> 19 20 namespace phosphor 21 { 22 namespace led 23 { 24 class SysfsLed 25 { 26 public: 27 explicit SysfsLed(std::filesystem::path&& root) : root(std::move(root)) 28 {} 29 SysfsLed() = delete; 30 SysfsLed(const SysfsLed& other) = delete; 31 SysfsLed(const SysfsLed&& other) = delete; 32 SysfsLed& operator=(const SysfsLed& other) = delete; 33 SysfsLed&& operator=(const SysfsLed&& other) = delete; 34 35 virtual ~SysfsLed() = default; 36 37 virtual unsigned long getBrightness(); 38 virtual void setBrightness(unsigned long brightness); 39 virtual unsigned long getMaxBrightness(); 40 virtual std::string getTrigger(); 41 virtual void setTrigger(const std::string& trigger); 42 virtual unsigned long getDelayOn(); 43 virtual void setDelayOn(unsigned long ms); 44 virtual unsigned long getDelayOff(); 45 virtual void setDelayOff(unsigned long ms); 46 47 protected: 48 static constexpr const char* attrBrightness = "brightness"; 49 static constexpr const char* attrMaxBrightness = "max_brightness"; 50 static constexpr const char* attrTrigger = "trigger"; 51 static constexpr const char* attrDelayOn = "delay_on"; 52 static constexpr const char* attrDelayOff = "delay_off"; 53 54 std::filesystem::path root; 55 }; 56 } // namespace led 57 } // namespace phosphor 58