1 /* 2 // Copyright (c) 2018 Intel 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 #pragma once 17 18 #include <sdbusplus/bus.hpp> 19 #include <string> 20 #include <vector> 21 22 // this struct has the gpio config for single gpio 23 struct gpioInfo 24 { 25 int fd; // io fd mapped with the gpio 26 uint32_t number; 27 std::string direction; 28 }; 29 30 // this struct represents button interface 31 struct buttonConfig 32 { 33 std::string formFactorName; // name of the button interface 34 std::vector<gpioInfo> gpios; // holds single or group gpio config 35 // corresponding to button interface 36 }; 37 38 /** 39 * @brief iterates over the list of gpios and configures gpios them 40 * config which is set from gpio defs json file. 41 * The fd of the configured gpio is stored in buttonConfig.gpios container 42 * @return int returns 0 on successful config of all gpios 43 */ 44 45 int configGroupGpio(buttonConfig& buttonCfg); 46 47 /** 48 * @brief configures and initializes the single gpio 49 * @return int returns 0 on successful config of all gpios 50 */ 51 52 int configGpio(gpioInfo& gpioConfig); 53 54 uint32_t getGpioNum(const std::string& gpioPin); 55 void closeGpio(int fd); 56