diff --git a/include/hardware/sensors.h b/include/hardware/sensors.h
new file mode 100644
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--- /dev/null
+++ b/include/hardware/sensors.h
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef _HARDWARE_SENSORS_H
+#define _HARDWARE_SENSORS_H
+
+#include <stdint.h>
+
+#if __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Sensor IDs must be a power of two and
+ * must match values in SensorManager.java
+ */
+
+#define SENSORS_ORIENTATION     0x00000001
+#define SENSORS_ACCELERATION    0x00000002
+#define SENSORS_TEMPERATURE     0x00000004
+#define SENSORS_MAGNETIC_FIELD  0x00000008
+#define SENSORS_LIGHT           0x00000010
+#define SENSORS_PROXIMITY       0x00000020
+#define SENSORS_TRICORDER       0x00000040
+#define SENSORS_ORIENTATION_RAW 0x00000080
+#define SENSORS_MASK            0x000000FF
+
+/**
+ * Values returned by the accelerometer in various locations in the universe.
+ * all values are in SI units (m/s^2)
+ */
+
+#define GRAVITY_SUN             (275.0f)
+#define GRAVITY_MERCURY         (3.70f)
+#define GRAVITY_VENUS           (8.87f)
+#define GRAVITY_EARTH           (9.80665f)
+#define GRAVITY_MOON            (1.6f)
+#define GRAVITY_MARS            (3.71f)
+#define GRAVITY_JUPITER         (23.12f)
+#define GRAVITY_SATURN          (8.96f)
+#define GRAVITY_URANUS          (8.69f)
+#define GRAVITY_NEPTUN          (11.0f)
+#define GRAVITY_PLUTO           (0.6f)
+#define GRAVITY_DEATH_STAR_I    (0.000000353036145f)
+#define GRAVITY_THE_ISLAND      (4.815162342f)
+
+/** Maximum magnetic field on Earth's surface */
+#define MAGNETIC_FIELD_EARTH_MAX    (60.0f)
+
+/** Minimum magnetic field on Earth's surface */
+#define MAGNETIC_FIELD_EARTH_MIN    (30.0f)
+
+/**
+ * Various luminance values during the day (lux)
+ */
+
+#define LIGHT_SUNLIGHT_MAX      (120000.0f)
+#define LIGHT_SUNLIGHT          (110000.0f)
+#define LIGHT_SHADE             (20000.0f)
+#define LIGHT_OVERCAST          (10000.0f)
+#define LIGHT_SUNRISE           (400.0f)
+#define LIGHT_CLOUDY            (100.0f)
+
+/*
+ * Various luminance values during the night (lux)
+ */
+
+#define LIGHT_FULLMOON          (0.25f)
+#define LIGHT_NO_MOON           (0.001f)
+
+/**
+ * status of each sensor
+ */
+
+#define SENSOR_STATUS_UNRELIABLE        0
+#define SENSOR_STATUS_ACCURACY_LOW      1
+#define SENSOR_STATUS_ACCURACY_MEDIUM   2
+#define SENSOR_STATUS_ACCURACY_HIGH     3
+
+/**
+ * Definition of the axis
+ *
+ * This API is relative to the screen of the device in its default orientation,
+ * that is, if the device can be used in portrait or landscape, this API
+ * is only relative to the NATURAL orientation of the screen. In other words,
+ * the axis are not swapped when the device's screen orientation changes.
+ * Higher level services /may/ perform this transformation.
+ *
+ *    -x         +x
+ *                ^
+ *                |
+ *    +-----------+-->  +y
+ *    |           |
+ *    |           |
+ *    |           |
+ *    |           |   / -z
+ *    |           |  /
+ *    |           | /
+ *    +-----------+/
+ *    | o   O   o /
+ *    +----------/+     -y
+ *              /
+ *             /
+ *           |/ +z
+ *
+ */
+typedef struct {
+    union {
+        float v[3];
+        struct {
+            float x;
+            float y;
+            float z;
+        };
+        struct {
+            float yaw;
+            float pitch;
+            float roll;
+        };
+    };
+    int8_t status;
+    uint8_t reserved[3];
+} sensors_vec_t;
+
+/**
+ * Union of the various types of sensor data
+ * that can be returned.
+ */
+typedef struct {
+    /* sensor identifier */
+    int             sensor;
+
+    union {
+        /* x,y,z values of the given sensor */
+        sensors_vec_t   vector;
+
+        /* orientation values are in degres */
+        sensors_vec_t   orientation;
+
+        /* acceleration values are in meter per second per second (m/s^2) */
+        sensors_vec_t   acceleration;
+
+        /* magnetic vector values are in micro-Tesla (uT) */
+        sensors_vec_t   magnetic;
+
+        /* temperature is in degres C */
+        float           temperature;
+    };
+
+    /* time is in nanosecond */
+    int64_t         time;
+
+    uint32_t        reserved;
+} sensors_data_t;
+
+/**
+ * Initialize the module. This is the first entry point
+ * called and typically initializes the hardware.
+ *
+ * @return bit map of available sensors defined by
+ *         the constants SENSORS_XXXX.
+ */
+uint32_t sensors_control_init();
+
+/**
+ * Returns the fd which will be the parameter to
+ * sensors_data_open. The caller takes ownership
+ * of this fd.
+ *
+ * @return a fd if successful, < 0 on error
+ */
+int sensors_control_open();
+
+/** Activate/deactiveate one or more of the sensors.
+ *
+ * @param sensors is a bitmask of the sensors to change.
+ * @param mask is a bitmask for enabling/disabling sensors.
+ *
+ * @return bitmask of SENSORS_XXXX indicating which sensors are enabled
+ */
+uint32_t sensors_control_activate(uint32_t sensors, uint32_t mask);
+
+/**
+ * Set the delay between sensor events in ms
+ *
+ * @return 0 if successful, < 0 on error
+ */
+int sensors_control_delay(int32_t ms);
+
+/**
+ * Prepare to read sensor data.
+ *
+ * This routiune does NOT take ownership of the fd
+ * and must not close it. Typcially this routine would
+ * use a duplicate of the fd parameter.
+ *
+ * @param fd from sensors_control_open.
+ *
+ * @return 0 if successful, < 0 on error
+ */
+int sensors_data_open(int fd);
+
+/**
+ * Caller has completed using the sensor data.
+ * The caller will not be blocked in sensors_data_poll
+ * when this routine is called.
+ *
+ * @return 0 if successful, < 0 on error
+ */
+int sensors_data_close();
+
+/**
+ * Return sensor data for one of the enabled sensors.
+ *
+ * @return SENSOR_XXXX for the returned data, -1 on error
+ * */
+int sensors_data_poll(sensors_data_t* data, uint32_t sensors_of_interest);
+
+/**
+ * @return bit map of available sensors defined by
+ *         the constants SENSORS_XXXX.
+ */
+uint32_t sensors_data_get_sensors();
+
+
+#if __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // _HARDWARE_SENSORS_H