Add ID button support

Using reset button as a template

Change-Id: Iccdaa758e15c913271426ec5d9b27aee92468593
Signed-off-by: Yong Li <yong.b.li@linux.intel.com>

6 files changed, 204 insertions, 1 deletions

diff --git a/services/chassis/Buttons/CMakeLists.txt b/services/chassis/Buttons/CMakeLists.txt
index a26c637..7421972 100644
--- a/services/chassis/Buttons/CMakeLists.txt
+++ b/services/chassis/Buttons/CMakeLists.txt
@@ -17,13 +17,17 @@ set(POWER_DBUS_INTF_NAME "xyz.openbmc_project.Chassis.Buttons.Power")
 set(RESET_DBUS_OBJECT_NAME "xyz/openbmc_project/Chassis/Buttons/Reset")
 set(RESET_DBUS_INTF_NAME "xyz.openbmc_project.Chassis.Buttons.Reset")
 
-add_definitions(-DPOWER_DBUS_OBJECT_NAME="/${POWER_DBUS_OBJECT_NAME}0")
+set(ID_DBUS_OBJECT_NAME "xyz/openbmc_project/Chassis/Buttons/ID")
+set(ID_DBUS_INTF_NAME "xyz.openbmc_project.Chassis.Buttons.ID")
 
+add_definitions(-DPOWER_DBUS_OBJECT_NAME="/${POWER_DBUS_OBJECT_NAME}0")
 add_definitions(-DRESET_DBUS_OBJECT_NAME="/${RESET_DBUS_OBJECT_NAME}0")
+add_definitions(-DID_DBUS_OBJECT_NAME="/${ID_DBUS_OBJECT_NAME}0")
 
 set(SRC_FILES
     src/PowerButton.cpp
     src/ResetButton.cpp
+    src/IDButton.cpp
     src/main.cpp
 )
 set(GENERATED_SRC_FILES
@@ -31,6 +35,8 @@ set(GENERATED_SRC_FILES
     ${POWER_DBUS_OBJECT_NAME}/server.cpp
     ${RESET_DBUS_OBJECT_NAME}/error.cpp
     ${RESET_DBUS_OBJECT_NAME}/server.cpp
+    ${ID_DBUS_OBJECT_NAME}/error.cpp
+    ${ID_DBUS_OBJECT_NAME}/server.cpp
 )
 
 # import libsystemd
@@ -61,6 +67,19 @@ link_directories(${DBUSINTERFACE_LIBRARY_DIRS})
 #include_directories(${CMAKE_CURRENT_BINARY_DIR}/${DBUS_OBJECT_NAME})
 
 add_custom_command(
+    OUTPUT ${ID_DBUS_OBJECT_NAME}/error.hpp
+    OUTPUT ${ID_DBUS_OBJECT_NAME}/error.cpp
+    COMMAND mkdir -p ${ID_DBUS_OBJECT_NAME}
+    COMMAND ${SDBUSPLUSPLUS} -r ${CMAKE_CURRENT_SOURCE_DIR} error exception-header ${ID_DBUS_INTF_NAME} > ${ID_DBUS_OBJECT_NAME}/error.hpp
+    COMMAND ${SDBUSPLUSPLUS} -r ${CMAKE_CURRENT_SOURCE_DIR} error exception-cpp ${ID_DBUS_INTF_NAME} > ${ID_DBUS_OBJECT_NAME}/error.cpp
+    DEPENDS ${ID_DBUS_OBJECT_NAME}.errors.yaml
+)
+set_source_files_properties(
+    ${ID_DBUS_OBJECT_NAME}/error.hpp
+    ${ID_DBUS_OBJECT_NAME}/error.cpp
+    PROPERTIES GENERATED TRUE)
+
+add_custom_command(
     OUTPUT ${POWER_DBUS_OBJECT_NAME}/error.hpp
     OUTPUT ${POWER_DBUS_OBJECT_NAME}/error.cpp
     COMMAND mkdir -p ${POWER_DBUS_OBJECT_NAME}
@@ -87,6 +106,19 @@ set_source_files_properties(
     PROPERTIES GENERATED TRUE)
 
 add_custom_command(
+    OUTPUT ${ID_DBUS_OBJECT_NAME}/server.hpp
+    OUTPUT ${ID_DBUS_OBJECT_NAME}/server.cpp
+    COMMAND mkdir -p ${ID_DBUS_OBJECT_NAME}
+    COMMAND ${SDBUSPLUSPLUS} -r ${CMAKE_CURRENT_SOURCE_DIR} interface server-header ${ID_DBUS_INTF_NAME} > ${ID_DBUS_OBJECT_NAME}/server.hpp
+    COMMAND ${SDBUSPLUSPLUS} -r ${CMAKE_CURRENT_SOURCE_DIR} interface server-cpp ${ID_DBUS_INTF_NAME} > ${ID_DBUS_OBJECT_NAME}/server.cpp
+    DEPENDS ${ID_DBUS_OBJECT_NAME}.interface.yaml
+)
+set_source_files_properties(
+    ${POWER_DBUS_OBJECT_NAME}/server.hpp
+    ${POWER_DBUS_OBJECT_NAME}/server.cpp
+    PROPERTIES GENERATED TRUE)
+
+add_custom_command(
     OUTPUT ${POWER_DBUS_OBJECT_NAME}/server.hpp
     OUTPUT ${POWER_DBUS_OBJECT_NAME}/server.cpp
     COMMAND mkdir -p ${POWER_DBUS_OBJECT_NAME}
diff --git a/services/chassis/Buttons/inc/IDButton.hpp b/services/chassis/Buttons/inc/IDButton.hpp
new file mode 100644
index 0000000..d050dce
--- /dev/null
+++ b/services/chassis/Buttons/inc/IDButton.hpp
@@ -0,0 +1,96 @@
+#pragma once
+#include "xyz/openbmc_project/Chassis/Buttons/ID/error.hpp"
+#include "xyz/openbmc_project/Chassis/Buttons/ID/server.hpp"
+#include "Common.hpp"
+#include "Gpio.hpp"
+
+const static constexpr char *ID_BUTTON = "ID_BTN";
+
+struct IDButton
+    : sdbusplus::server::object::object<
+          sdbusplus::xyz::openbmc_project::Chassis::Buttons::server::ID>
+{
+
+    IDButton(sdbusplus::bus::bus &bus, const char *path, EventPtr &event,
+             sd_event_io_handler_t handler = IDButton::EventHandler) :
+        sdbusplus::server::object::object<
+            sdbusplus::xyz::openbmc_project::Chassis::Buttons::server::ID>(
+            bus, path),
+        fd(-1), bus(bus), event(event), callbackHandler(handler)
+    {
+
+        int ret;
+
+        // config gpio
+        ret = ::configGpio(ID_BUTTON, &fd, bus);
+        if (ret < 0)
+        {
+            throw std::runtime_error("failed to config GPIO");
+        }
+
+        ret = sd_event_add_io(event.get(), nullptr, fd, EPOLLPRI,
+                              callbackHandler, this);
+        if (ret < 0)
+        {
+            throw std::runtime_error("failed to add to event loop");
+        }
+    }
+
+    ~IDButton()
+    {
+        ::closeGpio(fd);
+    }
+    bool simPress() override;
+    static int EventHandler(sd_event_source *es, int fd, uint32_t revents,
+                            void *userdata)
+    {
+
+        int n;
+        char buf;
+
+        IDButton *idButton = static_cast<IDButton *>(userdata);
+
+        if (!idButton)
+        {
+            phosphor::logging::log<phosphor::logging::level::ERR>(
+                "null pointer!");
+            return -1;
+        }
+
+        n = ::lseek(fd, 0, SEEK_SET);
+
+        if (n < 0)
+        {
+            phosphor::logging::log<phosphor::logging::level::ERR>(
+                "lseek error!");
+            return n;
+        }
+
+        n = ::read(fd, &buf, 1);
+        if (n < 0)
+        {
+            phosphor::logging::log<phosphor::logging::level::ERR>(
+                "read error!");
+            return n;
+        }
+
+        if (buf == '0')
+        {
+            // emit pressed signal
+            idButton->pressed();
+        }
+        else
+        {
+            // released
+            idButton->released();
+        }
+
+        return 0;
+    }
+
+  private:
+    int fd;
+    sdbusplus::bus::bus &bus;
+    EventPtr &event;
+    sd_event_io_handler_t callbackHandler;
+};
diff --git a/services/chassis/Buttons/src/IDButton.cpp b/services/chassis/Buttons/src/IDButton.cpp
new file mode 100644
index 0000000..30f6157
--- /dev/null
+++ b/services/chassis/Buttons/src/IDButton.cpp
@@ -0,0 +1,39 @@
+/*
+// 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 <chrono>
+#include <experimental/filesystem>
+#include <fcntl.h>
+#include <fstream>
+#include <iostream>
+#include <phosphor-logging/elog-errors.hpp>
+#include <phosphor-logging/elog.hpp>
+#include <phosphor-logging/log.hpp>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <systemd/sd-event.h>
+#include <unistd.h>
+#include <xyz/openbmc_project/Common/error.hpp>
+#include "IDButton.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";
+
+bool IDButton::simPress()
+{
+    pressed();
+    return true;
+}
\ No newline at end of file
diff --git a/services/chassis/Buttons/src/main.cpp b/services/chassis/Buttons/src/main.cpp
index a329dab..24e6189 100644
--- a/services/chassis/Buttons/src/main.cpp
+++ b/services/chassis/Buttons/src/main.cpp
@@ -13,6 +13,7 @@
 #include <xyz/openbmc_project/Common/error.hpp>
 #include "ResetButton.hpp"
 #include "PowerButton.hpp"
+#include "IDButton.hpp"
 
 int main(int argc, char *argv[])
 {
@@ -42,6 +43,8 @@ int main(int argc, char *argv[])
 
     ResetButton resetButton{bus, RESET_DBUS_OBJECT_NAME, eventP};
 
+    IDButton idButton{bus, ID_DBUS_OBJECT_NAME, eventP};
+
     try
     {
         bus.attach_event(eventP.get(), SD_EVENT_PRIORITY_NORMAL);
diff --git a/services/chassis/Buttons/xyz/openbmc_project/Chassis/Buttons/ID.errors.yaml b/services/chassis/Buttons/xyz/openbmc_project/Chassis/Buttons/ID.errors.yaml
new file mode 100644
index 0000000..9de4b9d
--- /dev/null
+++ b/services/chassis/Buttons/xyz/openbmc_project/Chassis/Buttons/ID.errors.yaml
@@ -0,0 +1,9 @@
+- name: UnsupportedCommand
+  description: >
+    An unsupported command was attempted.
+- name: InvalidParameter
+  description: >
+    An invalid parameter was attempted.
+- name: IOError
+  description: >
+    An IO error occurred.
diff --git a/services/chassis/Buttons/xyz/openbmc_project/Chassis/Buttons/ID.interface.yaml b/services/chassis/Buttons/xyz/openbmc_project/Chassis/Buttons/ID.interface.yaml
new file mode 100644
index 0000000..e25942f
--- /dev/null
+++ b/services/chassis/Buttons/xyz/openbmc_project/Chassis/Buttons/ID.interface.yaml
@@ -0,0 +1,24 @@
+description: >
+    ID button control service
+methods:
+    - name: simPress
+      description: >
+        emulate ID button press.
+      returns:
+        - name: state
+          type: boolean
+          description: >
+            The result of command.
+      errors:
+       - self.Error.UnsupportedCommand
+       - self.Error.InvalidParameter
+       - self.Error.IOError
+
+
+signals:
+    - name: Released
+      description: >
+        ID button release signal
+    - name: Pressed
+      description: >
+        ID button pressed signal