AK8975_FS/libsensors/sensors.cpp - platform/hardware/akm - Git at Google

 /*
  * 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.
  */

 #define LOG_TAG "Sensors"

 #include <hardware/sensors.h>
 #include <fcntl.h>
 #include <errno.h>
 #include <dirent.h>
 #include <math.h>
 #include <poll.h>
 #include <pthread.h>
 #include <stdlib.h>
 #include <string.h>

 #include <linux/input.h>

 #include <cutils/atomic.h>
 #include <utils/Log.h>

 #include "sensors.h"

 #if defined SENSORHAL_ACC_ADXL346
 #include "AdxlSensor.h"
 #elif defined SENSORHAL_ACC_KXTF9
 #include "KionixSensor.h"
 #else
 #error "Sensor configuration ERROR: No sensor is defined."
 #endif

 #include "AkmSensor.h"

 /*****************************************************************************/

 #define DELAY_OUT_TIME 0x7FFFFFFF

 #define LIGHT_SENSOR_POLLTIME    2000000000


 #define SENSORS_ACCELERATION     (1<<ID_A)
 #define SENSORS_MAGNETIC_FIELD   (1<<ID_M)
 #define SENSORS_ORIENTATION      (1<<ID_O)

 #define SENSORS_ACCELERATION_HANDLE     0
 #define SENSORS_MAGNETIC_FIELD_HANDLE   1
 #define SENSORS_ORIENTATION_HANDLE      2

 /*****************************************************************************/

 /* The SENSORS Module */
 static const struct sensor_t sSensorList[] = {
         { "AK8975 3-axis Magnetic field sensor",
           "Asahi Kasei Microdevices",
           1,
 		  SENSORS_MAGNETIC_FIELD_HANDLE,
           SENSOR_TYPE_MAGNETIC_FIELD, 1228.8f,
 		  CONVERT_M, 0.35f, 10000, 0, 0, 0, 0, 0, 0, { } },
 #ifdef SENSORHAL_ACC_ADXL346
         { "Analog Devices ADXL345/6 3-axis Accelerometer",
           "ADI",
           1, SENSORS_ACCELERATION_HANDLE,
           SENSOR_TYPE_ACCELEROMETER, (GRAVITY_EARTH * 16.0f),
 		  (GRAVITY_EARTH * 16.0f) / 4096.0f, 0.145f, 10000, 0, 0, 0, 0, 0, 0, { } },
         { "AK8975 Orientation sensor",
           "Asahi Kasei Microdevices",
           1, SENSORS_ORIENTATION_HANDLE,
           SENSOR_TYPE_ORIENTATION, 360.0f,
 		  CONVERT_O, 0.495f, 10000, 0, 0, 0, 0, 0, 0, { } }
 #endif
 #ifdef SENSORHAL_ACC_KXTF9
         { "Kionix KXTF9 3-axis Accelerometer",
           "Kionix",
           1, SENSORS_ACCELERATION_HANDLE,
           SENSOR_TYPE_ACCELEROMETER, (GRAVITY_EARTH * 2.0f),
 		  (GRAVITY_EARTH) / 1024.0f, 0.7f, 10000, 0, 0, 0, 0, 0, 0, { } },
         { "AK8975 Orientation sensor",
           "Asahi Kasei Microdevices",
           1, SENSORS_ORIENTATION_HANDLE,
           SENSOR_TYPE_ORIENTATION, 360.0f,
 		  CONVERT_O, 1.05f, 10000, 0, 0, 0, 0, 0, 0, { } }
 #endif
 };


 static int open_sensors(const struct hw_module_t* module, const char* id,
                         struct hw_device_t** device);

 static int sensors__get_sensors_list(struct sensors_module_t* module,
                                      struct sensor_t const** list)
 {
         *list = sSensorList;
         return ARRAY_SIZE(sSensorList);
 }

 static struct hw_module_methods_t sensors_module_methods = {
         .open = open_sensors
 };

 struct sensors_module_t HAL_MODULE_INFO_SYM = {
         .common = {
                 .tag = HARDWARE_MODULE_TAG,
                 .version_major = 1,
                 .version_minor = 0,
                 .id = SENSORS_HARDWARE_MODULE_ID,
                 .name = "AKM Sensor module",
                 .author = "Asahi Kasei Microdevices",
                 .methods = &sensors_module_methods,
                 .dso  = NULL,
                 .reserved = {0},
         },
         .get_sensors_list = sensors__get_sensors_list,
 };

 struct sensors_poll_context_t {
     struct sensors_poll_device_t device; // must be first

         sensors_poll_context_t();
         ~sensors_poll_context_t();
     int activate(int handle, int enabled);
     int setDelay(int handle, int64_t ns);
     int setDelay_sub(int handle, int64_t ns);
     int pollEvents(sensors_event_t* data, int count);

 private:
     enum {
         acc          = 0,
         akm          = 1,
         numSensorDrivers,
         numFds,
     };

     static const size_t wake = numFds - 1;
     static const char WAKE_MESSAGE = 'W';
     struct pollfd mPollFds[numFds];
     int mWritePipeFd;
     SensorBase* mSensors[numSensorDrivers];

 	/* These function will be different depends on
 	 * which sensor is implemented in AKMD program.
 	 */
     int handleToDriver(int handle);
 	int proxy_enable(int handle, int enabled);
 	int proxy_setDelay(int handle, int64_t ns);
 };

 /*****************************************************************************/

 sensors_poll_context_t::sensors_poll_context_t()
 {
 #ifdef SENSORHAL_ACC_ADXL346
     mSensors[acc] = new AdxlSensor();
 #endif
 #ifdef SENSORHAL_ACC_KXTF9
     mSensors[acc] = new KionixSensor();
 #endif
     mPollFds[acc].fd = mSensors[acc]->getFd();
     mPollFds[acc].events = POLLIN;
     mPollFds[acc].revents = 0;

     mSensors[akm] = new AkmSensor();
     mPollFds[akm].fd = mSensors[akm]->getFd();
     mPollFds[akm].events = POLLIN;
     mPollFds[akm].revents = 0;

     int wakeFds[2];
     int result = pipe(wakeFds);
     ALOGE_IF(result<0, "error creating wake pipe (%s)", strerror(errno));
     fcntl(wakeFds[0], F_SETFL, O_NONBLOCK);
     fcntl(wakeFds[1], F_SETFL, O_NONBLOCK);
     mWritePipeFd = wakeFds[1];

     mPollFds[wake].fd = wakeFds[0];
     mPollFds[wake].events = POLLIN;
     mPollFds[wake].revents = 0;
 }

 sensors_poll_context_t::~sensors_poll_context_t() {
     for (int i=0 ; i<numSensorDrivers ; i++) {
         delete mSensors[i];
     }
     close(mPollFds[wake].fd);
     close(mWritePipeFd);
 }

 int sensors_poll_context_t::handleToDriver(int handle) {
 	switch (handle) {
 		case ID_A:
 			return acc;
 		case ID_M:
 		case ID_O:
 			return akm;
 	}
 	return -EINVAL;
 }

 int sensors_poll_context_t::activate(int handle, int enabled) {
 	int drv = handleToDriver(handle);
 	int err;

 	switch (handle) {
 		case ID_A:
 		case ID_M:
 			/* No dependencies */
 			break;

 		case ID_O:
 			/* These sensors depend on ID_A and ID_M */
 			mSensors[handleToDriver(ID_A)]->setEnable(ID_A, enabled);
 			mSensors[handleToDriver(ID_M)]->setEnable(ID_M, enabled);
 			break;

 		default:
 			return -EINVAL;
 	}
 	err = mSensors[drv]->setEnable(handle, enabled);

     if (enabled && !err) {
         const char wakeMessage(WAKE_MESSAGE);
         int result = write(mWritePipeFd, &wakeMessage, 1);
         ALOGE_IF(result<0, "error sending wake message (%s)", strerror(errno));
     }
     return err;
 }

 int sensors_poll_context_t::setDelay(int handle, int64_t ns) {
 	switch (handle) {
 		case ID_A:
 		case ID_M:
 			/* No dependencies */
 			break;

 		case ID_O:
 			/* These sensors depend on ID_A and ID_M */
 			setDelay_sub(ID_A, ns);
 			setDelay_sub(ID_M, ns);
 			break;

 		default:
 			return -EINVAL;
 	}
 	return setDelay_sub(handle, ns);
 }

 int sensors_poll_context_t::setDelay_sub(int handle, int64_t ns) {
 	int drv = handleToDriver(handle);
 	int en = mSensors[drv]->getEnable(handle);
 	int64_t cur = mSensors[drv]->getDelay(handle);
 	int err = 0;

 	if (en <= 1) {
 		/* no dependencies */
 		if (cur != ns) {
 			err = mSensors[drv]->setDelay(handle, ns);
 		}
 	} else {
 		/* has dependencies, choose shorter interval */
 		if (cur > ns) {
 			err = mSensors[drv]->setDelay(handle, ns);
 		}
 	}
 	return err;
 }

 int sensors_poll_context_t::pollEvents(sensors_event_t* data, int count)
 {
     int nbEvents = 0;
     int n = 0;

     do {
         // see if we have some leftover from the last poll()
         for (int i=0 ; count && i<numSensorDrivers ; i++) {
             SensorBase* const sensor(mSensors[i]);
             if ((mPollFds[i].revents & POLLIN) || (sensor->hasPendingEvents())) {
                 int nb = sensor->readEvents(data, count);
                 if (nb < count) {
                     // no more data for this sensor
                     mPollFds[i].revents = 0;
                 }
 				if ((0 != nb) && (acc == i)) {
 					((AkmSensor*)(mSensors[akm]))->setAccel(&data[nb-1]);
 				}
                 count -= nb;
                 nbEvents += nb;
                 data += nb;
             }
         }

         if (count) {
             // we still have some room, so try to see if we can get
             // some events immediately or just wait if we don't have
             // anything to return
             n = poll(mPollFds, numFds, nbEvents ? 0 : -1);
             if (n<0) {
                 ALOGE("poll() failed (%s)", strerror(errno));
                 return -errno;
             }
             if (mPollFds[wake].revents & POLLIN) {
                 char msg;
                 int result = read(mPollFds[wake].fd, &msg, 1);
                 ALOGE_IF(result<0, "error reading from wake pipe (%s)", strerror(errno));
                 ALOGE_IF(msg != WAKE_MESSAGE, "unknown message on wake queue (0x%02x)", int(msg));
                 mPollFds[wake].revents = 0;
             }
         }
         // if we have events and space, go read them
     } while (n && count);

     return nbEvents;
 }

 /*****************************************************************************/

 static int poll__close(struct hw_device_t *dev)
 {
     sensors_poll_context_t *ctx = (sensors_poll_context_t *)dev;
     if (ctx) {
         delete ctx;
     }
     return 0;
 }

 static int poll__activate(struct sensors_poll_device_t *dev,
         int handle, int enabled) {
     sensors_poll_context_t *ctx = (sensors_poll_context_t *)dev;
     return ctx->activate(handle, enabled);
 }

 static int poll__setDelay(struct sensors_poll_device_t *dev,
         int handle, int64_t ns) {
     sensors_poll_context_t *ctx = (sensors_poll_context_t *)dev;
     return ctx->setDelay(handle, ns);
 }

 static int poll__poll(struct sensors_poll_device_t *dev,
         sensors_event_t* data, int count) {
     sensors_poll_context_t *ctx = (sensors_poll_context_t *)dev;
     return ctx->pollEvents(data, count);
 }

 /*****************************************************************************/

 /** Open a new instance of a sensor device using name */
 static int open_sensors(const struct hw_module_t* module, const char* id,
                         struct hw_device_t** device)
 {
         int status = -EINVAL;
         sensors_poll_context_t *dev = new sensors_poll_context_t();

         memset(&dev->device, 0, sizeof(sensors_poll_device_t));

         dev->device.common.tag = HARDWARE_DEVICE_TAG;
         dev->device.common.version  = 0;
         dev->device.common.module   = const_cast<hw_module_t*>(module);
         dev->device.common.close    = poll__close;
         dev->device.activate        = poll__activate;
         dev->device.setDelay        = poll__setDelay;
         dev->device.poll            = poll__poll;

         *device = &dev->device.common;
         status = 0;

         return status;
 }
	/*
	* 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.
	*/

	#define LOG_TAG "Sensors"

	#include <hardware/sensors.h>
	#include <fcntl.h>
	#include <errno.h>
	#include <dirent.h>
	#include <math.h>
	#include <poll.h>
	#include <pthread.h>
	#include <stdlib.h>
	#include <string.h>

	#include <linux/input.h>

	#include <cutils/atomic.h>
	#include <utils/Log.h>

	#include "sensors.h"

	#if defined SENSORHAL_ACC_ADXL346
	#include "AdxlSensor.h"
	#elif defined SENSORHAL_ACC_KXTF9
	#include "KionixSensor.h"
	#else
	#error "Sensor configuration ERROR: No sensor is defined."
	#endif

	#include "AkmSensor.h"

	/*****************************************************************************/

	#define DELAY_OUT_TIME 0x7FFFFFFF

	#define LIGHT_SENSOR_POLLTIME 2000000000


	#define SENSORS_ACCELERATION (1<<ID_A)
	#define SENSORS_MAGNETIC_FIELD (1<<ID_M)
	#define SENSORS_ORIENTATION (1<<ID_O)

	#define SENSORS_ACCELERATION_HANDLE 0
	#define SENSORS_MAGNETIC_FIELD_HANDLE 1
	#define SENSORS_ORIENTATION_HANDLE 2

	/*****************************************************************************/

	/* The SENSORS Module */
	static const struct sensor_t sSensorList[] = {
	{ "AK8975 3-axis Magnetic field sensor",
	"Asahi Kasei Microdevices",
	1,
	SENSORS_MAGNETIC_FIELD_HANDLE,
	SENSOR_TYPE_MAGNETIC_FIELD, 1228.8f,
	CONVERT_M, 0.35f, 10000, 0, 0, 0, 0, 0, 0, { } },
	#ifdef SENSORHAL_ACC_ADXL346
	{ "Analog Devices ADXL345/6 3-axis Accelerometer",
	"ADI",
	1, SENSORS_ACCELERATION_HANDLE,
	SENSOR_TYPE_ACCELEROMETER, (GRAVITY_EARTH * 16.0f),
	(GRAVITY_EARTH * 16.0f) / 4096.0f, 0.145f, 10000, 0, 0, 0, 0, 0, 0, { } },
	{ "AK8975 Orientation sensor",
	"Asahi Kasei Microdevices",
	1, SENSORS_ORIENTATION_HANDLE,
	SENSOR_TYPE_ORIENTATION, 360.0f,
	CONVERT_O, 0.495f, 10000, 0, 0, 0, 0, 0, 0, { } }
	#endif
	#ifdef SENSORHAL_ACC_KXTF9
	{ "Kionix KXTF9 3-axis Accelerometer",
	"Kionix",
	1, SENSORS_ACCELERATION_HANDLE,
	SENSOR_TYPE_ACCELEROMETER, (GRAVITY_EARTH * 2.0f),
	(GRAVITY_EARTH) / 1024.0f, 0.7f, 10000, 0, 0, 0, 0, 0, 0, { } },
	{ "AK8975 Orientation sensor",
	"Asahi Kasei Microdevices",
	1, SENSORS_ORIENTATION_HANDLE,
	SENSOR_TYPE_ORIENTATION, 360.0f,
	CONVERT_O, 1.05f, 10000, 0, 0, 0, 0, 0, 0, { } }
	#endif
	};


	static int open_sensors(const struct hw_module_t* module, const char* id,
	struct hw_device_t** device);

	static int sensors__get_sensors_list(struct sensors_module_t* module,
	struct sensor_t const** list)
	{
	*list = sSensorList;
	return ARRAY_SIZE(sSensorList);
	}

	static struct hw_module_methods_t sensors_module_methods = {
	.open = open_sensors
	};

	struct sensors_module_t HAL_MODULE_INFO_SYM = {
	.common = {
	.tag = HARDWARE_MODULE_TAG,
	.version_major = 1,
	.version_minor = 0,
	.id = SENSORS_HARDWARE_MODULE_ID,
	.name = "AKM Sensor module",
	.author = "Asahi Kasei Microdevices",
	.methods = &sensors_module_methods,
	.dso = NULL,
	.reserved = {0},
	},
	.get_sensors_list = sensors__get_sensors_list,
	};

	struct sensors_poll_context_t {
	struct sensors_poll_device_t device; // must be first

	sensors_poll_context_t();
	~sensors_poll_context_t();
	int activate(int handle, int enabled);
	int setDelay(int handle, int64_t ns);
	int setDelay_sub(int handle, int64_t ns);
	int pollEvents(sensors_event_t* data, int count);

	private:
	enum {
	acc = 0,
	akm = 1,
	numSensorDrivers,
	numFds,
	};

	static const size_t wake = numFds - 1;
	static const char WAKE_MESSAGE = 'W';
	struct pollfd mPollFds[numFds];
	int mWritePipeFd;
	SensorBase* mSensors[numSensorDrivers];

	/* These function will be different depends on
	* which sensor is implemented in AKMD program.
	*/
	int handleToDriver(int handle);
	int proxy_enable(int handle, int enabled);
	int proxy_setDelay(int handle, int64_t ns);
	};

	/*****************************************************************************/

	sensors_poll_context_t::sensors_poll_context_t()
	{
	#ifdef SENSORHAL_ACC_ADXL346
	mSensors[acc] = new AdxlSensor();
	#endif
	#ifdef SENSORHAL_ACC_KXTF9
	mSensors[acc] = new KionixSensor();
	#endif
	mPollFds[acc].fd = mSensors[acc]->getFd();
	mPollFds[acc].events = POLLIN;
	mPollFds[acc].revents = 0;

	mSensors[akm] = new AkmSensor();
	mPollFds[akm].fd = mSensors[akm]->getFd();
	mPollFds[akm].events = POLLIN;
	mPollFds[akm].revents = 0;

	int wakeFds[2];
	int result = pipe(wakeFds);
	ALOGE_IF(result<0, "error creating wake pipe (%s)", strerror(errno));
	fcntl(wakeFds[0], F_SETFL, O_NONBLOCK);
	fcntl(wakeFds[1], F_SETFL, O_NONBLOCK);
	mWritePipeFd = wakeFds[1];

	mPollFds[wake].fd = wakeFds[0];
	mPollFds[wake].events = POLLIN;
	mPollFds[wake].revents = 0;
	}

	sensors_poll_context_t::~sensors_poll_context_t() {
	for (int i=0 ; i<numSensorDrivers ; i++) {
	delete mSensors[i];
	}
	close(mPollFds[wake].fd);
	close(mWritePipeFd);
	}

	int sensors_poll_context_t::handleToDriver(int handle) {
	switch (handle) {
	case ID_A:
	return acc;
	case ID_M:
	case ID_O:
	return akm;
	}
	return -EINVAL;
	}

	int sensors_poll_context_t::activate(int handle, int enabled) {
	int drv = handleToDriver(handle);
	int err;

	switch (handle) {
	case ID_A:
	case ID_M:
	/* No dependencies */
	break;

	case ID_O:
	/* These sensors depend on ID_A and ID_M */
	mSensors[handleToDriver(ID_A)]->setEnable(ID_A, enabled);
	mSensors[handleToDriver(ID_M)]->setEnable(ID_M, enabled);
	break;

	default:
	return -EINVAL;
	}
	err = mSensors[drv]->setEnable(handle, enabled);

	if (enabled && !err) {
	const char wakeMessage(WAKE_MESSAGE);
	int result = write(mWritePipeFd, &wakeMessage, 1);
	ALOGE_IF(result<0, "error sending wake message (%s)", strerror(errno));
	}
	return err;
	}

	int sensors_poll_context_t::setDelay(int handle, int64_t ns) {
	switch (handle) {
	case ID_A:
	case ID_M:
	/* No dependencies */
	break;

	case ID_O:
	/* These sensors depend on ID_A and ID_M */
	setDelay_sub(ID_A, ns);
	setDelay_sub(ID_M, ns);
	break;

	default:
	return -EINVAL;
	}
	return setDelay_sub(handle, ns);
	}

	int sensors_poll_context_t::setDelay_sub(int handle, int64_t ns) {
	int drv = handleToDriver(handle);
	int en = mSensors[drv]->getEnable(handle);
	int64_t cur = mSensors[drv]->getDelay(handle);
	int err = 0;

	if (en <= 1) {
	/* no dependencies */
	if (cur != ns) {
	err = mSensors[drv]->setDelay(handle, ns);
	}
	} else {
	/* has dependencies, choose shorter interval */
	if (cur > ns) {
	err = mSensors[drv]->setDelay(handle, ns);
	}
	}
	return err;
	}

	int sensors_poll_context_t::pollEvents(sensors_event_t* data, int count)
	{
	int nbEvents = 0;
	int n = 0;

	do {
	// see if we have some leftover from the last poll()
	for (int i=0 ; count && i<numSensorDrivers ; i++) {
	SensorBase* const sensor(mSensors[i]);
	if ((mPollFds[i].revents & POLLIN) \|\| (sensor->hasPendingEvents())) {
	int nb = sensor->readEvents(data, count);
	if (nb < count) {
	// no more data for this sensor
	mPollFds[i].revents = 0;
	}
	if ((0 != nb) && (acc == i)) {
	((AkmSensor*)(mSensors[akm]))->setAccel(&data[nb-1]);
	}
	count -= nb;
	nbEvents += nb;
	data += nb;
	}
	}

	if (count) {
	// we still have some room, so try to see if we can get
	// some events immediately or just wait if we don't have
	// anything to return
	n = poll(mPollFds, numFds, nbEvents ? 0 : -1);
	if (n<0) {
	ALOGE("poll() failed (%s)", strerror(errno));
	return -errno;
	}
	if (mPollFds[wake].revents & POLLIN) {
	char msg;
	int result = read(mPollFds[wake].fd, &msg, 1);
	ALOGE_IF(result<0, "error reading from wake pipe (%s)", strerror(errno));
	ALOGE_IF(msg != WAKE_MESSAGE, "unknown message on wake queue (0x%02x)", int(msg));
	mPollFds[wake].revents = 0;
	}
	}
	// if we have events and space, go read them
	} while (n && count);

	return nbEvents;
	}

	/*****************************************************************************/

	static int poll__close(struct hw_device_t *dev)
	{
	sensors_poll_context_t ctx = (sensors_poll_context_t )dev;
	if (ctx) {
	delete ctx;
	}
	return 0;
	}

	static int poll__activate(struct sensors_poll_device_t *dev,
	int handle, int enabled) {
	sensors_poll_context_t ctx = (sensors_poll_context_t )dev;
	return ctx->activate(handle, enabled);
	}

	static int poll__setDelay(struct sensors_poll_device_t *dev,
	int handle, int64_t ns) {
	sensors_poll_context_t ctx = (sensors_poll_context_t )dev;
	return ctx->setDelay(handle, ns);
	}

	static int poll__poll(struct sensors_poll_device_t *dev,
	sensors_event_t* data, int count) {
	sensors_poll_context_t ctx = (sensors_poll_context_t )dev;
	return ctx->pollEvents(data, count);
	}

	/*****************************************************************************/

	/** Open a new instance of a sensor device using name */
	static int open_sensors(const struct hw_module_t* module, const char* id,
	struct hw_device_t** device)
	{
	int status = -EINVAL;
	sensors_poll_context_t *dev = new sensors_poll_context_t();

	memset(&dev->device, 0, sizeof(sensors_poll_device_t));

	dev->device.common.tag = HARDWARE_DEVICE_TAG;
	dev->device.common.version = 0;
	dev->device.common.module = const_cast<hw_module_t*>(module);
	dev->device.common.close = poll__close;
	dev->device.activate = poll__activate;
	dev->device.setDelay = poll__setDelay;
	dev->device.poll = poll__poll;

	*device = &dev->device.common;
	status = 0;

	return status;
	}