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 +1,375 @@
+/*
+ * 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 ANDROID_SENSORS_INTERFACE_H
+#define ANDROID_SENSORS_INTERFACE_H
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+#include <hardware/hardware.h>
+
+__BEGIN_DECLS
+
+/**
+ * The id of this module
+ */
+#define SENSORS_HARDWARE_MODULE_ID "sensors"
+
+/**
+ * Name of the sensors device to open
+ */
+#define SENSORS_HARDWARE_CONTROL    "control"
+#define SENSORS_HARDWARE_DATA       "data"
+
+/**
+ * Handles must be higher than SENSORS_HANDLE_BASE and must be unique.
+ * A Handle identifies a given sensors. The handle is used to activate
+ * and/or deactivate sensors.
+ * In this version of the API there can only be 256 handles.
+ */
+#define SENSORS_HANDLE_BASE             0
+#define SENSORS_HANDLE_BITS             8
+#define SENSORS_HANDLE_COUNT            (1<<SENSORS_HANDLE_BITS)
+
+
+/**
+ * Sensor types
+ */
+#define SENSOR_TYPE_ACCELEROMETER       1
+#define SENSOR_TYPE_MAGNETIC_FIELD      2
+#define SENSOR_TYPE_ORIENTATION         3
+#define SENSOR_TYPE_GYROSCOPE           4
+#define SENSOR_TYPE_LIGHT               5
+#define SENSOR_TYPE_PRESSURE            6
+#define SENSOR_TYPE_TEMPERATURE         7
+#define SENSOR_TYPE_PROXIMITY           8
+
+/**
+ * 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_NEPTUNE         (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)
+
+
+/**
+ * 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<0         x>0
+ *                ^
+ *                |
+ *    +-----------+-->  y>0
+ *    |           |
+ *    |           |
+ *    |           |
+ *    |           |   / z<0
+ *    |           |  /
+ *    |           | /
+ *    O-----------+/
+ *    |[]  [ ]  []/
+ *    +----------/+     y<0
+ *              /
+ *             /
+ *           |/ z>0 (toward the sky)
+ *
+ *    O: Origin (x=0,y=0,z=0)
+ *
+ *
+ * Orientation
+ * ----------- 
+ * 
+ * All values are angles in degrees.
+ * 
+ * azimuth: angle between the magnetic north direction and the Y axis, around 
+ *  the Z axis (0<=azimuth<360).
+ *      0=North, 90=East, 180=South, 270=West
+ * 
+ * pitch: Rotation around X axis (-180<=pitch<=180), with positive values when
+ *  the z-axis moves toward the y-axis.
+ *
+ * roll: Rotation around Y axis (-90<=roll<=90), with positive values when
+ *  the z-axis moves AWAY from the x-axis.
+ * 
+ * Note: This definition is different from yaw, pitch and roll used in aviation
+ *  where the X axis is along the long side of the plane (tail to nose).
+ *  
+ *  
+ * Acceleration
+ * ------------
+ *
+ *  All values are in SI units (m/s^2) and measure the acceleration of the
+ *  device minus the force of gravity.
+ *  
+ *  x: Acceleration minus Gx on the x-axis 
+ *  y: Acceleration minus Gy on the y-axis 
+ *  z: Acceleration minus Gz on the z-axis
+ *  
+ *  Examples:
+ *    When the device lies flat on a table and is pushed on its left side
+ *    toward the right, the x acceleration value is positive.
+ *    
+ *    When the device lies flat on a table, the acceleration value is +9.81,
+ *    which correspond to the acceleration of the device (0 m/s^2) minus the
+ *    force of gravity (-9.81 m/s^2).
+ *    
+ *    When the device lies flat on a table and is pushed toward the sky, the
+ *    acceleration value is greater than +9.81, which correspond to the
+ *    acceleration of the device (+A m/s^2) minus the force of 
+ *    gravity (-9.81 m/s^2).
+ *    
+ *    
+ * Magnetic Field
+ * --------------
+ * 
+ *  All values are in micro-Tesla (uT) and measure the ambient magnetic
+ *  field in the X, Y and Z axis.
+ *    
+ */
+typedef struct {
+    union {
+        float v[3];
+        struct {
+            float x;
+            float y;
+            float z;
+        };
+        struct {
+            float azimuth;
+            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 degrees */
+        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 degrees centigrade (Celsius) */
+        float           temperature;
+    };
+
+    /* time is in nanosecond */
+    int64_t         time;
+
+    uint32_t        reserved;
+} sensors_data_t;
+
+
+struct sensor_t;
+
+/**
+ * Every hardware module must have a data structure named HAL_MODULE_INFO_SYM
+ * and the fields of this data structure must begin with hw_module_t
+ * followed by module specific information.
+ */
+struct sensors_module_t {
+    struct hw_module_t common;
+
+    /**
+     * Enumerate all available sensors. The list is returned in "list".
+     * @return number of sensors in the list
+     */
+    int (*get_sensors_list)(struct sensors_module_t* module,
+            struct sensor_t const** list);
+};
+
+struct sensor_t {
+    /* name of this sensors */
+    const char*     name;
+    /* vendor of the hardware part */
+    const char*     vendor;
+    /* version of the hardware part + driver. The value of this field is
+     * left to the implementation and doesn't have to be monotonicaly
+     * increasing.
+     */    
+    int             version;
+    /* handle that identifies this sensors. This handle is used to activate
+     * and deactivate this sensor. The value of the handle must be 8 bits
+     * in this version of the API. 
+     */
+    int             handle;
+    /* this sensor's type. */
+    int             type;
+    /* maximaum range of this sensor's value in SI units */
+    float           maxRange;
+    /* smallest difference between two values reported by this sensor */
+    float           resolution;
+    /* rough estimate of this sensor's power consumption in mA */
+    float           power;
+    /* reserved fields, must be zero */
+    void*           reserved[9];
+};
+
+
+/**
+ * Every device data structure must begin with hw_device_t
+ * followed by module specific public methods and attributes.
+ */
+struct sensors_control_device_t {
+    struct hw_device_t common;
+    
+    /**
+     * Returns the fd which will be the parameter to
+     * sensors_data_device_t::open_data(). 
+     * The caller takes ownership of this fd. This is intended to be
+     * passed cross processes.
+     *
+     * @return a fd if successful, < 0 on error
+     */
+    int (*open_data_source)(struct sensors_control_device_t *dev);
+    
+    /** Activate/deactivate one sensor.
+     *
+     * @param handle is the handle of the sensor to change.
+     * @param enabled set to 1 to enable, or 0 to disable the sensor.
+     *
+     * @return 0 on success, negative errno code otherwise
+     */
+    int (*activate)(struct sensors_control_device_t *dev, 
+            int handle, int enabled);
+    
+    /**
+     * Set the delay between sensor events in ms
+     *
+     * @return 0 if successful, < 0 on error
+     */
+    int (*set_delay)(struct sensors_control_device_t *dev, int32_t ms);
+
+    /**
+     * Causes sensors_data_device_t.poll() to return -EWOULDBLOCK immediately.
+     */
+    int (*wake)(struct sensors_control_device_t *dev);
+};
+
+struct sensors_data_device_t {
+    struct hw_device_t common;
+
+    /**
+     * Prepare to read sensor data.
+     *
+     * This routine does NOT take ownership of the fd
+     * and must not close it. Typically this routine would
+     * use a duplicate of the fd parameter.
+     *
+     * @param fd from sensors_control_open.
+     *
+     * @return 0 if successful, < 0 on error
+     */
+    int (*data_open)(struct sensors_data_device_t *dev, 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 (*data_close)(struct sensors_data_device_t *dev);
+    
+    /**
+     * Return sensor data for one of the enabled sensors.
+     *
+     * @return sensor handle for the returned data, 0x7FFFFFFF when 
+     * sensors_control_device_t.wake() is called and -errno on error
+     *  
+     */
+    int (*poll)(struct sensors_data_device_t *dev, 
+            sensors_data_t* data);
+};
+
+
+/** convenience API for opening and closing a device */
+
+static inline int sensors_control_open(const struct hw_module_t* module, 
+        struct sensors_control_device_t** device) {
+    return module->methods->open(module, 
+            SENSORS_HARDWARE_CONTROL, (struct hw_device_t**)device);
+}
+
+static inline int sensors_control_close(struct sensors_control_device_t* device) {
+    return device->common.close(&device->common);
+}
+
+static inline int sensors_data_open(const struct hw_module_t* module, 
+        struct sensors_data_device_t** device) {
+    return module->methods->open(module, 
+            SENSORS_HARDWARE_DATA, (struct hw_device_t**)device);
+}
+
+static inline int sensors_data_close(struct sensors_data_device_t* device) {
+    return device->common.close(&device->common);
+}
+
+
+__END_DECLS
+
+#endif  // ANDROID_SENSORS_INTERFACE_H