diff --git a/power-sequencer/gpio.cpp b/power-sequencer/gpio.cpp
new file mode 100644
index 0000000..32f4358
--- /dev/null
+++ b/power-sequencer/gpio.cpp
@@ -0,0 +1,103 @@
+/**
+ * Copyright © 2017 IBM 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 <fcntl.h>
+#include <phosphor-logging/elog.hpp>
+#include <phosphor-logging/elog-errors.hpp>
+#include <phosphor-logging/log.hpp>
+#include <sys/ioctl.h>
+#include <xyz/openbmc_project/Common/error.hpp>
+#include "gpio.hpp"
+
+namespace witherspoon
+{
+namespace gpio
+{
+
+using namespace phosphor::logging;
+
+using InternalFailure = sdbusplus::xyz::openbmc_project::Common::
+                        Error::InternalFailure;
+
+Value GPIO::read()
+{
+    assert(direction == Direction::input);
+
+    requestLine();
+
+    gpiohandle_data data{};
+
+    auto rc = ioctl(lineFD(),
+                    GPIOHANDLE_GET_LINE_VALUES_IOCTL,
+                    &data);
+
+    if (rc < 0)
+    {
+        auto e = errno;
+        log<level::ERR>("Failed GET_LINE_VALUES ioctl",
+                        entry("ERRNO=%d", e));
+        elog<InternalFailure>();
+    }
+
+    return (data.values[0] == 0) ? Value::low : Value::high;
+}
+
+
+void GPIO::requestLine()
+{
+    //Only need to do this once
+    if (lineFD)
+    {
+        return;
+    }
+
+    power::util::FileDescriptor fd{open(device.c_str(), 0)};
+    if (fd() == -1)
+    {
+        auto e = errno;
+        log<level::ERR>("Failed opening GPIO device",
+                        entry("DEVICE=%s", device),
+                        entry("ERRNO=%d", e));
+        elog<InternalFailure>();
+    }
+
+    //Make an ioctl call to request the GPIO line, which will
+    //return the descriptor to use to access it.
+    gpiohandle_request request{};
+    strncpy(request.consumer_label,
+            "witherspoon-pfault-analysis",
+            sizeof(request.consumer_label));
+
+    request.flags = (direction == Direction::input) ?
+                    GPIOHANDLE_REQUEST_INPUT : GPIOHANDLE_REQUEST_OUTPUT;
+
+    request.lineoffsets[0] = gpio;
+    request.lines = 1;
+
+    auto rc = ioctl(fd(), GPIO_GET_LINEHANDLE_IOCTL, &request);
+    if (rc == -1)
+    {
+        auto e = errno;
+        log<level::ERR>("Failed GET_LINEHANDLE ioctl",
+                        entry("GPIO=%d", gpio),
+                        entry("ERRNO=%d", e));
+        elog<InternalFailure>();
+    }
+
+    lineFD.set(request.fd);
+}
+
+}
+}