drivers/media/dvb/siano/smsusb.c - kernel/msm - Gitiles

 /*
  *  Driver for the Siano SMS1xxx USB dongle
  *
  *  author: Anatoly Greenblat
  *
  *  Copyright (c), 2005-2008 Siano Mobile Silicon, Inc.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 3 as
  *  published by the Free Software Foundation;
  *
  *  Software distributed under the License is distributed on an "AS IS"
  *  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
  *
  *  See the GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/usb.h>
 #include <linux/firmware.h>

 #include "smscoreapi.h"
 #include "sms-cards.h"

 #define USB1_BUFFER_SIZE		0x1000
 #define USB2_BUFFER_SIZE		0x4000

 #define MAX_BUFFERS		50
 #define MAX_URBS		10

 struct smsusb_device_t;

 struct smsusb_urb_t {
 	struct smscore_buffer_t *cb;
 	struct smsusb_device_t	*dev;

 	struct urb urb;
 };

 struct smsusb_device_t {
 	struct usb_device *udev;
 	struct smscore_device_t *coredev;

 	struct smsusb_urb_t 	surbs[MAX_URBS];

 	int		response_alignment;
 	int		buffer_size;
 };

 static int smsusb_submit_urb(struct smsusb_device_t *dev,
 			     struct smsusb_urb_t *surb);

 static void smsusb_onresponse(struct urb *urb)
 {
 	struct smsusb_urb_t *surb = (struct smsusb_urb_t *) urb->context;
 	struct smsusb_device_t *dev = surb->dev;

 	if (urb->status < 0) {
 		sms_err("error, urb status %d, %d bytes",
 			urb->status, urb->actual_length);
 		return;
 	}

 	if (urb->actual_length > 0) {
 		struct SmsMsgHdr_ST *phdr = (struct SmsMsgHdr_ST *) surb->cb->p;

 		if (urb->actual_length >= phdr->msgLength) {
 			surb->cb->size = phdr->msgLength;

 			if (dev->response_alignment &&
 			    (phdr->msgFlags & MSG_HDR_FLAG_SPLIT_MSG)) {

 				surb->cb->offset =
 					dev->response_alignment +
 					((phdr->msgFlags >> 8) & 3);

 				/* sanity check */
 				if (((int) phdr->msgLength +
 				     surb->cb->offset) > urb->actual_length) {
 					sms_err("invalid response "
 						"msglen %d offset %d "
 						"size %d",
 						phdr->msgLength,
 						surb->cb->offset,
 						urb->actual_length);
 					goto exit_and_resubmit;
 				}

 				/* move buffer pointer and
 				 * copy header to its new location */
 				memcpy((char *) phdr + surb->cb->offset,
 				       phdr, sizeof(struct SmsMsgHdr_ST));
 			} else
 				surb->cb->offset = 0;

 			smscore_onresponse(dev->coredev, surb->cb);
 			surb->cb = NULL;
 		} else {
 			sms_err("invalid response "
 				"msglen %d actual %d",
 				phdr->msgLength, urb->actual_length);
 		}
 	}

 exit_and_resubmit:
 	smsusb_submit_urb(dev, surb);
 }

 static int smsusb_submit_urb(struct smsusb_device_t *dev,
 			     struct smsusb_urb_t *surb)
 {
 	if (!surb->cb) {
 		surb->cb = smscore_getbuffer(dev->coredev);
 		if (!surb->cb) {
 			sms_err("smscore_getbuffer(...) returned NULL");
 			return -ENOMEM;
 		}
 	}

 	usb_fill_bulk_urb(
 		&surb->urb,
 		dev->udev,
 		usb_rcvbulkpipe(dev->udev, 0x81),
 		surb->cb->p,
 		dev->buffer_size,
 		smsusb_onresponse,
 		surb
 	);
 	surb->urb.transfer_dma = surb->cb->phys;
 	surb->urb.transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

 	return usb_submit_urb(&surb->urb, GFP_ATOMIC);
 }

 static void smsusb_stop_streaming(struct smsusb_device_t *dev)
 {
 	int i;

 	for (i = 0; i < MAX_URBS; i++) {
 		usb_kill_urb(&dev->surbs[i].urb);

 		if (dev->surbs[i].cb) {
 			smscore_putbuffer(dev->coredev, dev->surbs[i].cb);
 			dev->surbs[i].cb = NULL;
 		}
 	}
 }

 static int smsusb_start_streaming(struct smsusb_device_t *dev)
 {
 	int i, rc;

 	for (i = 0; i < MAX_URBS; i++) {
 		rc = smsusb_submit_urb(dev, &dev->surbs[i]);
 		if (rc < 0) {
 			sms_err("smsusb_submit_urb(...) failed");
 			smsusb_stop_streaming(dev);
 			break;
 		}
 	}

 	return rc;
 }

 static int smsusb_sendrequest(void *context, void *buffer, size_t size)
 {
 	struct smsusb_device_t *dev = (struct smsusb_device_t *) context;
 	int dummy;

 	return usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2),
 			    buffer, size, &dummy, 1000);
 }

 static char *smsusb1_fw_lkup[] = {
 	"dvbt_stellar_usb.inp",
 	"dvbh_stellar_usb.inp",
 	"tdmb_stellar_usb.inp",
 	"none",
 	"dvbt_bda_stellar_usb.inp",
 };

 static inline char *sms_get_fw_name(int mode, int board_id)
 {
 	char **fw = sms_get_board(board_id)->fw;
 	return (fw && fw[mode]) ? fw[mode] : smsusb1_fw_lkup[mode];
 }

 static int smsusb1_load_firmware(struct usb_device *udev, int id, int board_id)
 {
 	const struct firmware *fw;
 	u8 *fw_buffer;
 	int rc, dummy;
 	char *fw_filename;

 	if (id < DEVICE_MODE_DVBT || id > DEVICE_MODE_DVBT_BDA) {
 		sms_err("invalid firmware id specified %d", id);
 		return -EINVAL;
 	}

 	fw_filename = sms_get_fw_name(id, board_id);

 	rc = request_firmware(&fw, fw_filename, &udev->dev);
 	if (rc < 0) {
 		sms_warn("failed to open \"%s\" mode %d, "
 			 "trying again with default firmware", fw_filename, id);

 		fw_filename = smsusb1_fw_lkup[id];
 		rc = request_firmware(&fw, fw_filename, &udev->dev);
 		if (rc < 0) {
 			sms_warn("failed to open \"%s\" mode %d",
 				 fw_filename, id);

 			return rc;
 		}
 	}

 	fw_buffer = kmalloc(fw->size, GFP_KERNEL);
 	if (fw_buffer) {
 		memcpy(fw_buffer, fw->data, fw->size);

 		rc = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 2),
 				  fw_buffer, fw->size, &dummy, 1000);

 		sms_info("sent %zd(%d) bytes, rc %d", fw->size, dummy, rc);

 		kfree(fw_buffer);
 	} else {
 		sms_err("failed to allocate firmware buffer");
 		rc = -ENOMEM;
 	}
 	sms_info("read FW %s, size=%zd", fw_filename, fw->size);

 	release_firmware(fw);

 	return rc;
 }

 static void smsusb1_detectmode(void *context, int *mode)
 {
 	char *product_string =
 		((struct smsusb_device_t *) context)->udev->product;

 	*mode = DEVICE_MODE_NONE;

 	if (!product_string) {
 		product_string = "none";
 		sms_err("product string not found");
 	} else if (strstr(product_string, "DVBH"))
 		*mode = 1;
 	else if (strstr(product_string, "BDA"))
 		*mode = 4;
 	else if (strstr(product_string, "DVBT"))
 		*mode = 0;
 	else if (strstr(product_string, "TDMB"))
 		*mode = 2;

 	sms_info("%d \"%s\"", *mode, product_string);
 }

 static int smsusb1_setmode(void *context, int mode)
 {
 	struct SmsMsgHdr_ST Msg = { MSG_SW_RELOAD_REQ, 0, HIF_TASK,
 			     sizeof(struct SmsMsgHdr_ST), 0 };

 	if (mode < DEVICE_MODE_DVBT || mode > DEVICE_MODE_DVBT_BDA) {
 		sms_err("invalid firmware id specified %d", mode);
 		return -EINVAL;
 	}

 	return smsusb_sendrequest(context, &Msg, sizeof(Msg));
 }

 static void smsusb_term_device(struct usb_interface *intf)
 {
 	struct smsusb_device_t *dev =
 		(struct smsusb_device_t *) usb_get_intfdata(intf);

 	if (dev) {
 		smsusb_stop_streaming(dev);

 		/* unregister from smscore */
 		if (dev->coredev)
 			smscore_unregister_device(dev->coredev);

 		kfree(dev);

 		sms_info("device %p destroyed", dev);
 	}

 	usb_set_intfdata(intf, NULL);
 }

 static int smsusb_init_device(struct usb_interface *intf, int board_id)
 {
 	struct smsdevice_params_t params;
 	struct smsusb_device_t *dev;
 	int i, rc;

 	/* create device object */
 	dev = kzalloc(sizeof(struct smsusb_device_t), GFP_KERNEL);
 	if (!dev) {
 		sms_err("kzalloc(sizeof(struct smsusb_device_t) failed");
 		return -ENOMEM;
 	}

 	memset(&params, 0, sizeof(params));
 	usb_set_intfdata(intf, dev);
 	dev->udev = interface_to_usbdev(intf);

 	params.device_type = sms_get_board(board_id)->type;

 	switch (params.device_type) {
 	case SMS_STELLAR:
 		dev->buffer_size = USB1_BUFFER_SIZE;

 		params.setmode_handler = smsusb1_setmode;
 		params.detectmode_handler = smsusb1_detectmode;
 		break;
 	default:
 		sms_err("Unspecified sms device type!");
 		/* fall-thru */
 	case SMS_NOVA_A0:
 	case SMS_NOVA_B0:
 	case SMS_VEGA:
 		dev->buffer_size = USB2_BUFFER_SIZE;
 		dev->response_alignment =
 			dev->udev->ep_in[1]->desc.wMaxPacketSize -
 			sizeof(struct SmsMsgHdr_ST);

 		params.flags |= SMS_DEVICE_FAMILY2;
 		break;
 	}

 	params.device = &dev->udev->dev;
 	params.buffer_size = dev->buffer_size;
 	params.num_buffers = MAX_BUFFERS;
 	params.sendrequest_handler = smsusb_sendrequest;
 	params.context = dev;
 	snprintf(params.devpath, sizeof(params.devpath),
 		 "usb\\%d-%s", dev->udev->bus->busnum, dev->udev->devpath);

 	/* register in smscore */
 	rc = smscore_register_device(&params, &dev->coredev);
 	if (rc < 0) {
 		sms_err("smscore_register_device(...) failed, rc %d", rc);
 		smsusb_term_device(intf);
 		return rc;
 	}

 	smscore_set_board_id(dev->coredev, board_id);

 	/* initialize urbs */
 	for (i = 0; i < MAX_URBS; i++) {
 		dev->surbs[i].dev = dev;
 		usb_init_urb(&dev->surbs[i].urb);
 	}

 	sms_info("smsusb_start_streaming(...).");
 	rc = smsusb_start_streaming(dev);
 	if (rc < 0) {
 		sms_err("smsusb_start_streaming(...) failed");
 		smsusb_term_device(intf);
 		return rc;
 	}

 	rc = smscore_start_device(dev->coredev);
 	if (rc < 0) {
 		sms_err("smscore_start_device(...) failed");
 		smsusb_term_device(intf);
 		return rc;
 	}

 	sms_info("device %p created", dev);

 	return rc;
 }

 static int smsusb_probe(struct usb_interface *intf,
 			const struct usb_device_id *id)
 {
 	struct usb_device *udev = interface_to_usbdev(intf);
 	char devpath[32];
 	int i, rc;

 	rc = usb_clear_halt(udev, usb_rcvbulkpipe(udev, 0x81));
 	rc = usb_clear_halt(udev, usb_rcvbulkpipe(udev, 0x02));

 	if (intf->num_altsetting > 0) {
 		rc = usb_set_interface(
 			udev, intf->cur_altsetting->desc.bInterfaceNumber, 0);
 		if (rc < 0) {
 			sms_err("usb_set_interface failed, rc %d", rc);
 			return rc;
 		}
 	}

 	sms_info("smsusb_probe %d",
 	       intf->cur_altsetting->desc.bInterfaceNumber);
 	for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++)
 		sms_info("endpoint %d %02x %02x %d", i,
 		       intf->cur_altsetting->endpoint[i].desc.bEndpointAddress,
 		       intf->cur_altsetting->endpoint[i].desc.bmAttributes,
 		       intf->cur_altsetting->endpoint[i].desc.wMaxPacketSize);

 	if ((udev->actconfig->desc.bNumInterfaces == 2) &&
 	    (intf->cur_altsetting->desc.bInterfaceNumber == 0)) {
 		sms_err("rom interface 0 is not used");
 		return -ENODEV;
 	}

 	if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
 		snprintf(devpath, sizeof(devpath), "usb\\%d-%s",
 			 udev->bus->busnum, udev->devpath);
 		sms_info("stellar device was found.");
 		return smsusb1_load_firmware(
 				udev, smscore_registry_getmode(devpath),
 				id->driver_info);
 	}

 	rc = smsusb_init_device(intf, id->driver_info);
 	sms_info("rc %d", rc);
 	return rc;
 }

 static void smsusb_disconnect(struct usb_interface *intf)
 {
 	smsusb_term_device(intf);
 }

 static struct usb_driver smsusb_driver = {
 	.name			= "sms1xxx",
 	.probe			= smsusb_probe,
 	.disconnect		= smsusb_disconnect,
 	.id_table		= smsusb_id_table,
 };

 int smsusb_register(void)
 {
 	int rc = usb_register(&smsusb_driver);
 	if (rc)
 		sms_err("usb_register failed. Error number %d", rc);

 	sms_debug("");

 	return rc;
 }

 void smsusb_unregister(void)
 {
 	sms_debug("");
 	/* Regular USB Cleanup */
 	usb_deregister(&smsusb_driver);
 }
	/*
	* Driver for the Siano SMS1xxx USB dongle
	*
	* author: Anatoly Greenblat
	*
	* Copyright (c), 2005-2008 Siano Mobile Silicon, Inc.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 3 as
	* published by the Free Software Foundation;
	*
	* Software distributed under the License is distributed on an "AS IS"
	* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
	*
	* See the GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	*/

	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/usb.h>
	#include <linux/firmware.h>

	#include "smscoreapi.h"
	#include "sms-cards.h"

	#define USB1_BUFFER_SIZE 0x1000
	#define USB2_BUFFER_SIZE 0x4000

	#define MAX_BUFFERS 50
	#define MAX_URBS 10

	struct smsusb_device_t;

	struct smsusb_urb_t {
	struct smscore_buffer_t *cb;
	struct smsusb_device_t *dev;

	struct urb urb;
	};

	struct smsusb_device_t {
	struct usb_device *udev;
	struct smscore_device_t *coredev;

	struct smsusb_urb_t surbs[MAX_URBS];

	int response_alignment;
	int buffer_size;
	};

	static int smsusb_submit_urb(struct smsusb_device_t *dev,
	struct smsusb_urb_t *surb);

	static void smsusb_onresponse(struct urb *urb)
	{
	struct smsusb_urb_t surb = (struct smsusb_urb_t ) urb->context;
	struct smsusb_device_t *dev = surb->dev;

	if (urb->status < 0) {
	sms_err("error, urb status %d, %d bytes",
	urb->status, urb->actual_length);
	return;
	}

	if (urb->actual_length > 0) {
	struct SmsMsgHdr_ST phdr = (struct SmsMsgHdr_ST ) surb->cb->p;

	if (urb->actual_length >= phdr->msgLength) {
	surb->cb->size = phdr->msgLength;

	if (dev->response_alignment &&
	(phdr->msgFlags & MSG_HDR_FLAG_SPLIT_MSG)) {

	surb->cb->offset =
	dev->response_alignment +
	((phdr->msgFlags >> 8) & 3);

	/* sanity check */
	if (((int) phdr->msgLength +
	surb->cb->offset) > urb->actual_length) {
	sms_err("invalid response "
	"msglen %d offset %d "
	"size %d",
	phdr->msgLength,
	surb->cb->offset,
	urb->actual_length);
	goto exit_and_resubmit;
	}

	/* move buffer pointer and
	* copy header to its new location */
	memcpy((char *) phdr + surb->cb->offset,
	phdr, sizeof(struct SmsMsgHdr_ST));
	} else
	surb->cb->offset = 0;

	smscore_onresponse(dev->coredev, surb->cb);
	surb->cb = NULL;
	} else {
	sms_err("invalid response "
	"msglen %d actual %d",
	phdr->msgLength, urb->actual_length);
	}
	}

	exit_and_resubmit:
	smsusb_submit_urb(dev, surb);
	}

	static int smsusb_submit_urb(struct smsusb_device_t *dev,
	struct smsusb_urb_t *surb)
	{
	if (!surb->cb) {
	surb->cb = smscore_getbuffer(dev->coredev);
	if (!surb->cb) {
	sms_err("smscore_getbuffer(...) returned NULL");
	return -ENOMEM;
	}
	}

	usb_fill_bulk_urb(
	&surb->urb,
	dev->udev,
	usb_rcvbulkpipe(dev->udev, 0x81),
	surb->cb->p,
	dev->buffer_size,
	smsusb_onresponse,
	surb
	);
	surb->urb.transfer_dma = surb->cb->phys;
	surb->urb.transfer_flags \|= URB_NO_TRANSFER_DMA_MAP;

	return usb_submit_urb(&surb->urb, GFP_ATOMIC);
	}

	static void smsusb_stop_streaming(struct smsusb_device_t *dev)
	{
	int i;

	for (i = 0; i < MAX_URBS; i++) {
	usb_kill_urb(&dev->surbs[i].urb);

	if (dev->surbs[i].cb) {
	smscore_putbuffer(dev->coredev, dev->surbs[i].cb);
	dev->surbs[i].cb = NULL;
	}
	}
	}

	static int smsusb_start_streaming(struct smsusb_device_t *dev)
	{
	int i, rc;

	for (i = 0; i < MAX_URBS; i++) {
	rc = smsusb_submit_urb(dev, &dev->surbs[i]);
	if (rc < 0) {
	sms_err("smsusb_submit_urb(...) failed");
	smsusb_stop_streaming(dev);
	break;
	}
	}

	return rc;
	}

	static int smsusb_sendrequest(void context, void buffer, size_t size)
	{
	struct smsusb_device_t dev = (struct smsusb_device_t ) context;
	int dummy;

	return usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2),
	buffer, size, &dummy, 1000);
	}

	static char *smsusb1_fw_lkup[] = {
	"dvbt_stellar_usb.inp",
	"dvbh_stellar_usb.inp",
	"tdmb_stellar_usb.inp",
	"none",
	"dvbt_bda_stellar_usb.inp",
	};

	static inline char *sms_get_fw_name(int mode, int board_id)
	{
	char **fw = sms_get_board(board_id)->fw;
	return (fw && fw[mode]) ? fw[mode] : smsusb1_fw_lkup[mode];
	}

	static int smsusb1_load_firmware(struct usb_device *udev, int id, int board_id)
	{
	const struct firmware *fw;
	u8 *fw_buffer;
	int rc, dummy;
	char *fw_filename;

	if (id < DEVICE_MODE_DVBT \|\| id > DEVICE_MODE_DVBT_BDA) {
	sms_err("invalid firmware id specified %d", id);
	return -EINVAL;
	}

	fw_filename = sms_get_fw_name(id, board_id);

	rc = request_firmware(&fw, fw_filename, &udev->dev);
	if (rc < 0) {
	sms_warn("failed to open \"%s\" mode %d, "
	"trying again with default firmware", fw_filename, id);

	fw_filename = smsusb1_fw_lkup[id];
	rc = request_firmware(&fw, fw_filename, &udev->dev);
	if (rc < 0) {
	sms_warn("failed to open \"%s\" mode %d",
	fw_filename, id);

	return rc;
	}
	}

	fw_buffer = kmalloc(fw->size, GFP_KERNEL);
	if (fw_buffer) {
	memcpy(fw_buffer, fw->data, fw->size);

	rc = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 2),
	fw_buffer, fw->size, &dummy, 1000);

	sms_info("sent %zd(%d) bytes, rc %d", fw->size, dummy, rc);

	kfree(fw_buffer);
	} else {
	sms_err("failed to allocate firmware buffer");
	rc = -ENOMEM;
	}
	sms_info("read FW %s, size=%zd", fw_filename, fw->size);

	release_firmware(fw);

	return rc;
	}

	static void smsusb1_detectmode(void context, int mode)
	{
	char *product_string =
	((struct smsusb_device_t *) context)->udev->product;

	*mode = DEVICE_MODE_NONE;

	if (!product_string) {
	product_string = "none";
	sms_err("product string not found");
	} else if (strstr(product_string, "DVBH"))
	*mode = 1;
	else if (strstr(product_string, "BDA"))
	*mode = 4;
	else if (strstr(product_string, "DVBT"))
	*mode = 0;
	else if (strstr(product_string, "TDMB"))
	*mode = 2;

	sms_info("%d \"%s\"", *mode, product_string);
	}

	static int smsusb1_setmode(void *context, int mode)
	{
	struct SmsMsgHdr_ST Msg = { MSG_SW_RELOAD_REQ, 0, HIF_TASK,
	sizeof(struct SmsMsgHdr_ST), 0 };

	if (mode < DEVICE_MODE_DVBT \|\| mode > DEVICE_MODE_DVBT_BDA) {
	sms_err("invalid firmware id specified %d", mode);
	return -EINVAL;
	}

	return smsusb_sendrequest(context, &Msg, sizeof(Msg));
	}

	static void smsusb_term_device(struct usb_interface *intf)
	{
	struct smsusb_device_t *dev =
	(struct smsusb_device_t *) usb_get_intfdata(intf);

	if (dev) {
	smsusb_stop_streaming(dev);

	/* unregister from smscore */
	if (dev->coredev)
	smscore_unregister_device(dev->coredev);

	kfree(dev);

	sms_info("device %p destroyed", dev);
	}

	usb_set_intfdata(intf, NULL);
	}

	static int smsusb_init_device(struct usb_interface *intf, int board_id)
	{
	struct smsdevice_params_t params;
	struct smsusb_device_t *dev;
	int i, rc;

	/* create device object */
	dev = kzalloc(sizeof(struct smsusb_device_t), GFP_KERNEL);
	if (!dev) {
	sms_err("kzalloc(sizeof(struct smsusb_device_t) failed");
	return -ENOMEM;
	}

	memset(&params, 0, sizeof(params));
	usb_set_intfdata(intf, dev);
	dev->udev = interface_to_usbdev(intf);

	params.device_type = sms_get_board(board_id)->type;

	switch (params.device_type) {
	case SMS_STELLAR:
	dev->buffer_size = USB1_BUFFER_SIZE;

	params.setmode_handler = smsusb1_setmode;
	params.detectmode_handler = smsusb1_detectmode;
	break;
	default:
	sms_err("Unspecified sms device type!");
	/* fall-thru */
	case SMS_NOVA_A0:
	case SMS_NOVA_B0:
	case SMS_VEGA:
	dev->buffer_size = USB2_BUFFER_SIZE;
	dev->response_alignment =
	dev->udev->ep_in[1]->desc.wMaxPacketSize -
	sizeof(struct SmsMsgHdr_ST);

	params.flags \|= SMS_DEVICE_FAMILY2;
	break;
	}

	params.device = &dev->udev->dev;
	params.buffer_size = dev->buffer_size;
	params.num_buffers = MAX_BUFFERS;
	params.sendrequest_handler = smsusb_sendrequest;
	params.context = dev;
	snprintf(params.devpath, sizeof(params.devpath),
	"usb\\%d-%s", dev->udev->bus->busnum, dev->udev->devpath);

	/* register in smscore */
	rc = smscore_register_device(&params, &dev->coredev);
	if (rc < 0) {
	sms_err("smscore_register_device(...) failed, rc %d", rc);
	smsusb_term_device(intf);
	return rc;
	}

	smscore_set_board_id(dev->coredev, board_id);

	/* initialize urbs */
	for (i = 0; i < MAX_URBS; i++) {
	dev->surbs[i].dev = dev;
	usb_init_urb(&dev->surbs[i].urb);
	}

	sms_info("smsusb_start_streaming(...).");
	rc = smsusb_start_streaming(dev);
	if (rc < 0) {
	sms_err("smsusb_start_streaming(...) failed");
	smsusb_term_device(intf);
	return rc;
	}

	rc = smscore_start_device(dev->coredev);
	if (rc < 0) {
	sms_err("smscore_start_device(...) failed");
	smsusb_term_device(intf);
	return rc;
	}

	sms_info("device %p created", dev);

	return rc;
	}

	static int smsusb_probe(struct usb_interface *intf,
	const struct usb_device_id *id)
	{
	struct usb_device *udev = interface_to_usbdev(intf);
	char devpath[32];
	int i, rc;

	rc = usb_clear_halt(udev, usb_rcvbulkpipe(udev, 0x81));
	rc = usb_clear_halt(udev, usb_rcvbulkpipe(udev, 0x02));

	if (intf->num_altsetting > 0) {
	rc = usb_set_interface(
	udev, intf->cur_altsetting->desc.bInterfaceNumber, 0);
	if (rc < 0) {
	sms_err("usb_set_interface failed, rc %d", rc);
	return rc;
	}
	}

	sms_info("smsusb_probe %d",
	intf->cur_altsetting->desc.bInterfaceNumber);
	for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++)
	sms_info("endpoint %d %02x %02x %d", i,
	intf->cur_altsetting->endpoint[i].desc.bEndpointAddress,
	intf->cur_altsetting->endpoint[i].desc.bmAttributes,
	intf->cur_altsetting->endpoint[i].desc.wMaxPacketSize);

	if ((udev->actconfig->desc.bNumInterfaces == 2) &&
	(intf->cur_altsetting->desc.bInterfaceNumber == 0)) {
	sms_err("rom interface 0 is not used");
	return -ENODEV;
	}

	if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
	snprintf(devpath, sizeof(devpath), "usb\\%d-%s",
	udev->bus->busnum, udev->devpath);
	sms_info("stellar device was found.");
	return smsusb1_load_firmware(
	udev, smscore_registry_getmode(devpath),
	id->driver_info);
	}

	rc = smsusb_init_device(intf, id->driver_info);
	sms_info("rc %d", rc);
	return rc;
	}

	static void smsusb_disconnect(struct usb_interface *intf)
	{
	smsusb_term_device(intf);
	}

	static struct usb_driver smsusb_driver = {
	.name = "sms1xxx",
	.probe = smsusb_probe,
	.disconnect = smsusb_disconnect,
	.id_table = smsusb_id_table,
	};

	int smsusb_register(void)
	{
	int rc = usb_register(&smsusb_driver);
	if (rc)
	sms_err("usb_register failed. Error number %d", rc);

	sms_debug("");

	return rc;
	}

	void smsusb_unregister(void)
	{
	sms_debug("");
	/* Regular USB Cleanup */
	usb_deregister(&smsusb_driver);
	}