Implement power control for x86 based platforms
This power control module provides the capability to
power on/off the host via gpio.
And provides some interfaces for system to contorl the system
power like:
setPowerState
getPowerState
Change-Id: Icd6530c42f2bc7c4d84062be786d25710b53f434
Signed-off-by: Kuiying Wang <kuiying.wang@intel.com>
diff --git a/gpio/CMakeLists.txt b/gpio/CMakeLists.txt
new file mode 100644
index 0000000..bd51f3e
--- /dev/null
+++ b/gpio/CMakeLists.txt
@@ -0,0 +1,42 @@
+cmake_minimum_required(VERSION 2.8.10 FATAL_ERROR)
+project(chassisgpio CXX)
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+set(LIBRARY_NAME "${PROJECT_NAME}")
+set(INSTALL_BIN_DIR ${CMAKE_INSTALL_PREFIX}/bin)
+set(INSTALL_LIB_DIR ${CMAKE_INSTALL_PREFIX}/lib)
+set(PROJECT_CMAKE_FILES ${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY})
+
+set(INSTALL_INCLUDE_DIR ${CMAKE_INSTALL_PREFIX}/include)
+set(DEF_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_PREFIX}/lib/cmake)
+set(INSTALL_CMAKE_DIR ${DEF_INSTALL_CMAKE_DIR})
+
+include(GNUInstallDirs)
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/inc)
+
+add_library(${PROJECT_NAME} SHARED src/gpio.cpp)
+
+set_target_properties(${PROJECT_NAME} PROPERTIES VERSION "0.1.0")
+set_target_properties(${PROJECT_NAME} PROPERTIES SOVERSION "0")
+
+install(TARGETS ${PROJECT_NAME}
+ EXPORT "${PROJECT_NAME}EXPORT"
+ RUNTIME DESTINATION "${INSTALL_BIN_DIR}" COMPONENT bin
+ LIBRARY DESTINATION "${INSTALL_LIB_DIR}" COMPONENT shlib
+ ARCHIVE DESTINATION "${INSTALL_LIB_DIR}" COMPONENT stlib
+ COMPONENT dev)
+
+install(FILES "inc/gpio.hpp"
+ DESTINATION "${INSTALL_INCLUDE_DIR}/" )
+
+install(EXPORT "${PROJECT_NAME}EXPORT"
+ DESTINATION "lib/cmake"
+ FILE ${PROJECT_NAME}Targets.cmake)
+
+configure_file(${CMAKE_SOURCE_DIR}/cmake/Config.cmake.in
+ "${PROJECT_CMAKE_FILES}/${PROJECT_NAME}-config.cmake" @ONLY)
+
+install(FILES
+ "${PROJECT_CMAKE_FILES}/${PROJECT_NAME}-config.cmake"
+ DESTINATION "lib/cmake" COMPONENT dev)
diff --git a/gpio/inc/gpio.hpp b/gpio/inc/gpio.hpp
new file mode 100644
index 0000000..0c29381
--- /dev/null
+++ b/gpio/inc/gpio.hpp
@@ -0,0 +1,19 @@
+/*
+// Copyright (c) 2018 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+
+#pragma once
+int configGpio(const char *gpioName, int *fd, sdbusplus::bus::bus &bus);
+int closeGpio(int fd);
\ No newline at end of file
diff --git a/gpio/src/gpio.cpp b/gpio/src/gpio.cpp
new file mode 100644
index 0000000..de669eb
--- /dev/null
+++ b/gpio/src/gpio.cpp
@@ -0,0 +1,190 @@
+/*
+// Copyright (c) 2018 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+
+#include <experimental/filesystem>
+#include <fcntl.h>
+#include <fstream>
+#include <phosphor-logging/elog-errors.hpp>
+#include <unistd.h>
+#include <xyz/openbmc_project/Common/error.hpp>
+#include "gpio.hpp"
+
+const static constexpr char *SYSMGR_SERVICE = "org.openbmc.managers.System";
+const static constexpr char *SYSMGR_OBJ_PATH = "/org/openbmc/managers/System";
+const static constexpr char *SYSMGR_INTERFACE = "org.openbmc.managers.System";
+
+int closeGpio(int fd)
+{
+ if (fd > 0)
+ {
+ ::close(fd);
+ }
+ return 0;
+}
+
+int configGpio(const char *gpioName, int *fd, sdbusplus::bus::bus &bus)
+{
+ sdbusplus::message::message method = bus.new_method_call(
+ SYSMGR_SERVICE, SYSMGR_OBJ_PATH, SYSMGR_INTERFACE, "gpioInit");
+
+ method.append(gpioName);
+
+ sdbusplus::message::message result = bus.call(method);
+
+ if (result.is_method_error())
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>(
+ "configGPIO: bus call error!");
+ return -1;
+ }
+
+ int32_t gpioNum = -1;
+ std::string gpioDev;
+ std::string gpioDirection;
+
+ result.read(gpioDev, gpioNum, gpioDirection);
+
+ if (gpioDev.empty())
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>(
+ "configGPIO: gpioDev error!");
+ return -1;
+ }
+
+ if (gpioDirection.empty())
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>(
+ "configGPIO: gpioDirection error!");
+ return -1;
+ }
+
+ std::fstream stream;
+
+ stream.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+
+ std::string devPath =
+ gpioDev + "/gpio" + std::to_string(gpioNum) + "/value";
+
+ std::experimental::filesystem::path fullPath(devPath);
+
+ if (std::experimental::filesystem::exists(fullPath))
+ {
+ phosphor::logging::log<phosphor::logging::level::INFO>(
+ "GPIO exported",
+ phosphor::logging::entry("PATH=%s", devPath.c_str()));
+ }
+ else
+ {
+ devPath = gpioDev + "/export";
+
+ stream.open(devPath, std::fstream::out);
+
+ if (!stream.good())
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>(
+ "Error in opening for write!",
+ phosphor::logging::entry("PATH=%s", devPath.c_str()),
+ phosphor::logging::entry("NUM=%d", gpioNum));
+ return -1;
+ }
+
+ stream << gpioNum;
+ stream.close();
+ }
+
+ if (gpioDirection == "out")
+ {
+ devPath = gpioDev + "/gpio" + std::to_string(gpioNum) + "/value";
+
+ uint32_t currentValue = 0;
+
+ stream.open(devPath, std::fstream::in);
+
+ if (!stream.good())
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>(
+ "Error in opening for read!",
+ phosphor::logging::entry("PATH=%s", devPath.c_str()));
+ return -1;
+ }
+
+ stream >> currentValue;
+ stream.close();
+
+ const char *direction = currentValue ? "high" : "low";
+
+ devPath = gpioDev + "/gpio" + std::to_string(gpioNum) + "/direction";
+
+ stream.open(devPath, std::fstream::out);
+
+ if (!stream.good())
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>(
+ "Error in opening for write!");
+ return -1;
+ }
+
+ stream << direction;
+ stream.close();
+ }
+ else if (gpioDirection == "in")
+ {
+ devPath = gpioDev + "/gpio" + std::to_string(gpioNum) + "/direction";
+
+ stream.open(devPath, std::fstream::out);
+
+ if (!stream.good())
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>(
+ "Error in opening for write!");
+ return -1;
+ }
+
+ stream << gpioDirection;
+ stream.close();
+ }
+ else if (gpioDirection == "both")
+ {
+
+ // For gpio configured as ‘both’, it is an interrupt pin and trigged on
+ // both rising and falling signals
+ devPath = gpioDev + "/gpio" + std::to_string(gpioNum) + "/edge";
+
+ stream.open(devPath, std::fstream::out);
+
+ if (!stream.good())
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>(
+ "Error in opening for write!");
+ return -1;
+ }
+
+ stream << gpioDirection;
+ stream.close();
+ }
+
+ devPath = gpioDev + "/gpio" + std::to_string(gpioNum) + "/value";
+
+ *fd = ::open(devPath.c_str(), O_RDWR | O_NONBLOCK);
+
+ if (*fd < 0)
+ {
+ phosphor::logging::log<phosphor::logging::level::ERR>("open error!");
+ return -1;
+ }
+
+ return 0;
+}