blob: 056093a45d8c0073bfed9a292aa968a5b071fb25 [file] [log] [blame]
#include "evdev.hpp"
#include "xyz/openbmc_project/Common/error.hpp"
#include <fcntl.h>
#include <libevdev/libevdev.h>
#include <phosphor-logging/elog-errors.hpp>
#include <phosphor-logging/elog.hpp>
#include <phosphor-logging/log.hpp>
namespace phosphor
{
namespace gpio
{
using namespace phosphor::logging;
using namespace sdbusplus::xyz::openbmc_project::Common::Error;
// Populate the file descriptor for passed in device
int Evdev::openDevice()
{
using namespace phosphor::logging;
auto fd = open(path.c_str(), O_RDONLY | O_NONBLOCK);
if (fd < 0)
{
log<level::ERR>("Failed to open device path",
entry("DEVICEPATH=%s", path.c_str()),
entry("ERRNO=%d", errno));
elog<InternalFailure>();
}
return fd;
}
// Initializes the event device with the fd
void Evdev::initEvDev()
{
if (devicePtr)
{
// Init can be done only once per device
return;
}
struct libevdev* evdev = nullptr;
auto rc = libevdev_new_from_fd((fd)(), &evdev);
if (rc < 0)
{
log<level::ERR>("Failed to initialize evdev");
elog<InternalFailure>();
return;
}
// Packing in the unique_ptr
devicePtr.reset(evdev);
}
// Attaches the FD to event loop and registers the callback handler
void Evdev::registerCallback()
{
decltype(eventSource.get()) sourcePtr = nullptr;
auto rc = sd_event_add_io(event.get(), &sourcePtr, (fd)(), EPOLLIN,
callbackHandler, this);
eventSource.reset(sourcePtr);
if (rc < 0)
{
log<level::ERR>("Failed to register callback handler",
entry("ERROR=%s", strerror(-rc)));
elog<InternalFailure>();
}
}
} // namespace gpio
} // namespace phosphor