[linux-2.6-block.git] / drivers / media / video / gspca / finepix.c

/*
 * Fujifilm Finepix subdriver
 *
 * Copyright (C) 2008 Frank Zago
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#define MODULE_NAME "finepix"

#include "gspca.h"

MODULE_AUTHOR("Frank Zago <frank@zago.net>");
MODULE_DESCRIPTION("Fujifilm FinePix USB V4L2 driver");
MODULE_LICENSE("GPL");

/* Default timeout, in ms */
#define FPIX_TIMEOUT 250

/* Maximum transfer size to use. The windows driver reads by chunks of
 * 0x2000 bytes, so do the same. Note: reading more seems to work
 * too. */
#define FPIX_MAX_TRANSFER 0x2000

/* Structure to hold all of our device specific stuff */
struct usb_fpix {
	struct gspca_dev gspca_dev;	/* !! must be the first item */

	struct work_struct work_struct;
	struct workqueue_struct *work_thread;
};

/* Delay after which claim the next frame. If the delay is too small,
 * the camera will return old frames. On the 4800Z, 20ms is bad, 25ms
 * will fail every 4 or 5 frames, but 30ms is perfect. On the A210,
 * 30ms is bad while 35ms is perfect. */
#define NEXT_FRAME_DELAY 35

/* These cameras only support 320x200. */
static const struct v4l2_pix_format fpix_mode[1] = {
	{ 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0}
};

/* send a command to the webcam */
static int command(struct gspca_dev *gspca_dev,
		int order)	/* 0: reset, 1: frame request */
{
	static u8 order_values[2][12] = {
		{0xc6, 0, 0, 0, 0, 0, 0,    0, 0x20, 0, 0, 0},	/* reset */
		{0xd3, 0, 0, 0, 0, 0, 0, 0x01,    0, 0, 0, 0},	/* fr req */
	};

	memcpy(gspca_dev->usb_buf, order_values[order], 12);
	return usb_control_msg(gspca_dev->dev,
			usb_sndctrlpipe(gspca_dev->dev, 0),
			USB_REQ_GET_STATUS,
			USB_DIR_OUT | USB_TYPE_CLASS |
			USB_RECIP_INTERFACE, 0, 0, gspca_dev->usb_buf,
			12, FPIX_TIMEOUT);
}

/* workqueue */
static void dostream(struct work_struct *work)
{
	struct usb_fpix *dev = container_of(work, struct usb_fpix, work_struct);
	struct gspca_dev *gspca_dev = &dev->gspca_dev;
	struct urb *urb = gspca_dev->urb[0];
	u8 *data = urb->transfer_buffer;
	struct gspca_frame *frame;
	int ret = 0;
	int len;

	/* synchronize with the main driver */
	mutex_lock(&gspca_dev->usb_lock);
	mutex_unlock(&gspca_dev->usb_lock);
	PDEBUG(D_STREAM, "dostream started");

	/* loop reading a frame */
again:
	while (gspca_dev->present && gspca_dev->streaming) {

		/* request a frame */
		mutex_lock(&gspca_dev->usb_lock);
		ret = command(gspca_dev, 1);
		mutex_unlock(&gspca_dev->usb_lock);
		if (ret < 0)
			break;
		if (!gspca_dev->present || !gspca_dev->streaming)
			break;

		/* the frame comes in parts */
		for (;;) {
			ret = usb_bulk_msg(gspca_dev->dev,
					urb->pipe,
					data,
					FPIX_MAX_TRANSFER,
					&len, FPIX_TIMEOUT);
			if (ret < 0) {
				/* Most of the time we get a timeout
				 * error. Just restart. */
				goto again;
			}
			if (!gspca_dev->present || !gspca_dev->streaming)
				goto out;
			frame = gspca_get_i_frame(&dev->gspca_dev);
			if (frame == NULL)
				gspca_dev->last_packet_type = DISCARD_PACKET;

			if (len < FPIX_MAX_TRANSFER ||
				(data[len - 2] == 0xff &&
					data[len - 1] == 0xd9)) {

				/* If the result is less than what was asked
				 * for, then it's the end of the
				 * frame. Sometimes the jpeg is not complete,
				 * but there's nothing we can do. We also end
				 * here if the the jpeg ends right at the end
				 * of the frame. */
				if (frame)
					frame = gspca_frame_add(gspca_dev,
							LAST_PACKET,
							frame,
							data, len);
				break;
			}

			/* got a partial image */
			if (frame)
				gspca_frame_add(gspca_dev,
						gspca_dev->last_packet_type
							== LAST_PACKET
						? FIRST_PACKET : INTER_PACKET,
						frame, data, len);
		}

		/* We must wait before trying reading the next
		 * frame. If we don't, or if the delay is too short,
		 * the camera will disconnect. */
		msleep(NEXT_FRAME_DELAY);
	}

out:
	PDEBUG(D_STREAM, "dostream stopped");
}

/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
		const struct usb_device_id *id)
{
	struct usb_fpix *dev = (struct usb_fpix *) gspca_dev;
	struct cam *cam = &gspca_dev->cam;

	cam->cam_mode = fpix_mode;
	cam->nmodes = 1;
	cam->bulk = 1;
	cam->bulk_size = FPIX_MAX_TRANSFER;

	INIT_WORK(&dev->work_struct, dostream);

	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	return 0;
}

/* start the camera */
static int sd_start(struct gspca_dev *gspca_dev)
{
	struct usb_fpix *dev = (struct usb_fpix *) gspca_dev;
	int ret, len;

	/* Init the device */
	ret = command(gspca_dev, 0);
	if (ret < 0) {
		PDEBUG(D_STREAM, "init failed %d", ret);
		return ret;
	}

	/* Read the result of the command. Ignore the result, for it
	 * varies with the device. */
	ret = usb_bulk_msg(gspca_dev->dev,
			gspca_dev->urb[0]->pipe,
			gspca_dev->urb[0]->transfer_buffer,
			FPIX_MAX_TRANSFER, &len,
			FPIX_TIMEOUT);
	if (ret < 0) {
		PDEBUG(D_STREAM, "usb_bulk_msg failed %d", ret);
		return ret;
	}

	/* Request a frame, but don't read it */
	ret = command(gspca_dev, 1);
	if (ret < 0) {
		PDEBUG(D_STREAM, "frame request failed %d", ret);
		return ret;
	}

	/* Again, reset bulk in endpoint */
	usb_clear_halt(gspca_dev->dev, gspca_dev->urb[0]->pipe);

	/* Start the workqueue function to do the streaming */
	dev->work_thread = create_singlethread_workqueue(MODULE_NAME);
	queue_work(dev->work_thread, &dev->work_struct);

	return 0;
}

/* called on streamoff with alt==0 and on disconnect */
/* the usb_lock is held at entry - restore on exit */
static void sd_stop0(struct gspca_dev *gspca_dev)
{
	struct usb_fpix *dev = (struct usb_fpix *) gspca_dev;

	/* wait for the work queue to terminate */
	mutex_unlock(&gspca_dev->usb_lock);
	destroy_workqueue(dev->work_thread);
	mutex_lock(&gspca_dev->usb_lock);
	dev->work_thread = NULL;
}

/* Table of supported USB devices */
static const __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x04cb, 0x0104)},
	{USB_DEVICE(0x04cb, 0x0109)},
	{USB_DEVICE(0x04cb, 0x010b)},
	{USB_DEVICE(0x04cb, 0x010f)},
	{USB_DEVICE(0x04cb, 0x0111)},
	{USB_DEVICE(0x04cb, 0x0113)},
	{USB_DEVICE(0x04cb, 0x0115)},
	{USB_DEVICE(0x04cb, 0x0117)},
	{USB_DEVICE(0x04cb, 0x0119)},
	{USB_DEVICE(0x04cb, 0x011b)},
	{USB_DEVICE(0x04cb, 0x011d)},
	{USB_DEVICE(0x04cb, 0x0121)},
	{USB_DEVICE(0x04cb, 0x0123)},
	{USB_DEVICE(0x04cb, 0x0125)},
	{USB_DEVICE(0x04cb, 0x0127)},
	{USB_DEVICE(0x04cb, 0x0129)},
	{USB_DEVICE(0x04cb, 0x012b)},
	{USB_DEVICE(0x04cb, 0x012d)},
	{USB_DEVICE(0x04cb, 0x012f)},
	{USB_DEVICE(0x04cb, 0x0131)},
	{USB_DEVICE(0x04cb, 0x013b)},
	{USB_DEVICE(0x04cb, 0x013d)},
	{USB_DEVICE(0x04cb, 0x013f)},
	{}
};

MODULE_DEVICE_TABLE(usb, device_table);

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name   = MODULE_NAME,
	.config = sd_config,
	.init   = sd_init,
	.start  = sd_start,
	.stop0  = sd_stop0,
};

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
		const struct usb_device_id *id)
{
	return gspca_dev_probe(intf, id,
			&sd_desc,
			sizeof(struct usb_fpix),
			THIS_MODULE);
}

static struct usb_driver sd_driver = {
	.name       = MODULE_NAME,
	.id_table   = device_table,
	.probe      = sd_probe,
	.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
	.suspend = gspca_suspend,
	.resume  = gspca_resume,
#endif
};

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
	int ret;

	ret = usb_register(&sd_driver);
	if (ret < 0)
		return ret;
	PDEBUG(D_PROBE, "registered");
	return 0;
}

static void __exit sd_mod_exit(void)
{
	usb_deregister(&sd_driver);
	PDEBUG(D_PROBE, "deregistered");
}

module_init(sd_mod_init);
module_exit(sd_mod_exit);
Commit	Line	Data
97076859 FZ	1	/*
	2	* Fujifilm Finepix subdriver
	3	*
	4	* Copyright (C) 2008 Frank Zago
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
	21	#define MODULE_NAME "finepix"
	22
	23	#include "gspca.h"
	24
	25	MODULE_AUTHOR("Frank Zago <frank@zago.net>");
	26	MODULE_DESCRIPTION("Fujifilm FinePix USB V4L2 driver");
	27	MODULE_LICENSE("GPL");
	28
	29	/* Default timeout, in ms */
c0c4c893	30	#define FPIX_TIMEOUT 250
97076859 FZ	31
	32	/* Maximum transfer size to use. The windows driver reads by chunks of
	33	* 0x2000 bytes, so do the same. Note: reading more seems to work
	34	* too. */
	35	#define FPIX_MAX_TRANSFER 0x2000
	36
	37	/* Structure to hold all of our device specific stuff */
	38	struct usb_fpix {
	39	struct gspca_dev gspca_dev; /* !! must be the first item */
	40
c0c4c893 JFM	41	struct work_struct work_struct;
c0c4c893 JFM	42	struct workqueue_struct *work_thread;
97076859 FZ	43	};
	44
	45	/* Delay after which claim the next frame. If the delay is too small,
	46	* the camera will return old frames. On the 4800Z, 20ms is bad, 25ms
c0c4c893 JFM	47	* will fail every 4 or 5 frames, but 30ms is perfect. On the A210,
	48	* 30ms is bad while 35ms is perfect. */
	49	#define NEXT_FRAME_DELAY 35
97076859 FZ	50
97076859 FZ	51	/* These cameras only support 320x200. */
cc611b8a	52	static const struct v4l2_pix_format fpix_mode[1] = {
97076859 FZ	53	{ 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	54	.bytesperline = 320,
	55	.sizeimage = 320 * 240 * 3 / 8 + 590,
	56	.colorspace = V4L2_COLORSPACE_SRGB,
	57	.priv = 0}
	58	};
	59
c0c4c893 JFM	60	/* send a command to the webcam */
	61	static int command(struct gspca_dev *gspca_dev,
	62	int order) /* 0: reset, 1: frame request */
97076859	63	{
c0c4c893 JFM	64	static u8 order_values[2][12] = {
	65	{0xc6, 0, 0, 0, 0, 0, 0, 0, 0x20, 0, 0, 0}, /* reset */
	66	{0xd3, 0, 0, 0, 0, 0, 0, 0x01, 0, 0, 0, 0}, /* fr req */
	67	};
97076859	68
c0c4c893 JFM	69	memcpy(gspca_dev->usb_buf, order_values[order], 12);
	70	return usb_control_msg(gspca_dev->dev,
	71	usb_sndctrlpipe(gspca_dev->dev, 0),
	72	USB_REQ_GET_STATUS,
	73	USB_DIR_OUT \| USB_TYPE_CLASS \|
	74	USB_RECIP_INTERFACE, 0, 0, gspca_dev->usb_buf,
	75	12, FPIX_TIMEOUT);
97076859 FZ	76	}
97076859 FZ	77
c0c4c893 JFM	78	/* workqueue */
c0c4c893 JFM	79	static void dostream(struct work_struct *work)
97076859	80	{
c0c4c893 JFM	81	struct usb_fpix *dev = container_of(work, struct usb_fpix, work_struct);
	82	struct gspca_dev *gspca_dev = &dev->gspca_dev;
	83	struct urb *urb = gspca_dev->urb[0];
	84	u8 *data = urb->transfer_buffer;
	85	struct gspca_frame *frame;
	86	int ret = 0;
	87	int len;
	88
	89	/* synchronize with the main driver */
	90	mutex_lock(&gspca_dev->usb_lock);
	91	mutex_unlock(&gspca_dev->usb_lock);
	92	PDEBUG(D_STREAM, "dostream started");
	93
	94	/* loop reading a frame */
	95	again:
	96	while (gspca_dev->present && gspca_dev->streaming) {
	97
	98	/* request a frame */
	99	mutex_lock(&gspca_dev->usb_lock);
	100	ret = command(gspca_dev, 1);
	101	mutex_unlock(&gspca_dev->usb_lock);
	102	if (ret < 0)
	103	break;
	104	if (!gspca_dev->present \|\| !gspca_dev->streaming)
	105	break;
	106
	107	/* the frame comes in parts */
	108	for (;;) {
	109	ret = usb_bulk_msg(gspca_dev->dev,
	110	urb->pipe,
	111	data,
	112	FPIX_MAX_TRANSFER,
	113	&len, FPIX_TIMEOUT);
	114	if (ret < 0) {
	115	/* Most of the time we get a timeout
	116	* error. Just restart. */
	117	goto again;
	118	}
	119	if (!gspca_dev->present \|\| !gspca_dev->streaming)
	120	goto out;
	121	frame = gspca_get_i_frame(&dev->gspca_dev);
	122	if (frame == NULL)
	123	gspca_dev->last_packet_type = DISCARD_PACKET;
	124
	125	if (len < FPIX_MAX_TRANSFER \|\|
	126	(data[len - 2] == 0xff &&
	127	data[len - 1] == 0xd9)) {
	128
	129	/* If the result is less than what was asked
	130	* for, then it's the end of the
	131	* frame. Sometimes the jpeg is not complete,
	132	* but there's nothing we can do. We also end
	133	* here if the the jpeg ends right at the end
	134	* of the frame. */
	135	if (frame)
	136	frame = gspca_frame_add(gspca_dev,
	137	LAST_PACKET,
	138	frame,
	139	data, len);
	140	break;
	141	}
97076859 FZ	142
97076859 FZ	143	/* got a partial image */
a3a58467 FZ	144	if (frame)
	145	gspca_frame_add(gspca_dev,
	146	gspca_dev->last_packet_type
c0c4c893	147	== LAST_PACKET
a3a58467	148	? FIRST_PACKET : INTER_PACKET,
c0c4c893	149	frame, data, len);
97076859	150	}
97076859	151
c0c4c893 JFM	152	/* We must wait before trying reading the next
	153	* frame. If we don't, or if the delay is too short,
	154	* the camera will disconnect. */
	155	msleep(NEXT_FRAME_DELAY);
97076859	156	}
97076859	157
c0c4c893 JFM	158	out:
c0c4c893 JFM	159	PDEBUG(D_STREAM, "dostream stopped");
97076859 FZ	160	}
	161
	162	/* this function is called at probe time */
	163	static int sd_config(struct gspca_dev *gspca_dev,
	164	const struct usb_device_id *id)
	165	{
c0c4c893	166	struct usb_fpix dev = (struct usb_fpix ) gspca_dev;
97076859 FZ	167	struct cam *cam = &gspca_dev->cam;
	168
	169	cam->cam_mode = fpix_mode;
	170	cam->nmodes = 1;
6929dc6b	171	cam->bulk = 1;
97076859 FZ	172	cam->bulk_size = FPIX_MAX_TRANSFER;
97076859 FZ	173
c0c4c893	174	INIT_WORK(&dev->work_struct, dostream);
97076859	175
c0c4c893	176	return 0;
97076859 FZ	177	}
	178
	179	/* this function is called at probe and resume time */
	180	static int sd_init(struct gspca_dev *gspca_dev)
	181	{
97076859 FZ	182	return 0;
	183	}
	184
c0c4c893	185	/* start the camera */
97076859 FZ	186	static int sd_start(struct gspca_dev *gspca_dev)
	187	{
	188	struct usb_fpix dev = (struct usb_fpix ) gspca_dev;
c0c4c893	189	int ret, len;
97076859	190
97076859	191	/* Init the device */
c0c4c893 JFM	192	ret = command(gspca_dev, 0);
	193	if (ret < 0) {
	194	PDEBUG(D_STREAM, "init failed %d", ret);
	195	return ret;
97076859 FZ	196	}
	197
	198	/* Read the result of the command. Ignore the result, for it
	199	* varies with the device. */
	200	ret = usb_bulk_msg(gspca_dev->dev,
50e06dee	201	gspca_dev->urb[0]->pipe,
c0c4c893 JFM	202	gspca_dev->urb[0]->transfer_buffer,
c0c4c893 JFM	203	FPIX_MAX_TRANSFER, &len,
97076859	204	FPIX_TIMEOUT);
c0c4c893 JFM	205	if (ret < 0) {
	206	PDEBUG(D_STREAM, "usb_bulk_msg failed %d", ret);
	207	return ret;
97076859 FZ	208	}
	209
	210	/* Request a frame, but don't read it */
c0c4c893 JFM	211	ret = command(gspca_dev, 1);
	212	if (ret < 0) {
	213	PDEBUG(D_STREAM, "frame request failed %d", ret);
	214	return ret;
97076859 FZ	215	}
	216
	217	/* Again, reset bulk in endpoint */
50e06dee	218	usb_clear_halt(gspca_dev->dev, gspca_dev->urb[0]->pipe);
97076859	219
c0c4c893 JFM	220	/* Start the workqueue function to do the streaming */
	221	dev->work_thread = create_singlethread_workqueue(MODULE_NAME);
	222	queue_work(dev->work_thread, &dev->work_struct);
97076859 FZ	223
97076859 FZ	224	return 0;
c0c4c893 JFM	225	}
	226
	227	/* called on streamoff with alt==0 and on disconnect */
	228	/* the usb_lock is held at entry - restore on exit */
	229	static void sd_stop0(struct gspca_dev *gspca_dev)
	230	{
	231	struct usb_fpix dev = (struct usb_fpix ) gspca_dev;
97076859	232
c0c4c893 JFM	233	/* wait for the work queue to terminate */
	234	mutex_unlock(&gspca_dev->usb_lock);
	235	destroy_workqueue(dev->work_thread);
	236	mutex_lock(&gspca_dev->usb_lock);
	237	dev->work_thread = NULL;
97076859 FZ	238	}
	239
	240	/* Table of supported USB devices */
	241	static const __devinitdata struct usb_device_id device_table[] = {
	242	{USB_DEVICE(0x04cb, 0x0104)},
	243	{USB_DEVICE(0x04cb, 0x0109)},
	244	{USB_DEVICE(0x04cb, 0x010b)},
	245	{USB_DEVICE(0x04cb, 0x010f)},
	246	{USB_DEVICE(0x04cb, 0x0111)},
	247	{USB_DEVICE(0x04cb, 0x0113)},
	248	{USB_DEVICE(0x04cb, 0x0115)},
	249	{USB_DEVICE(0x04cb, 0x0117)},
	250	{USB_DEVICE(0x04cb, 0x0119)},
	251	{USB_DEVICE(0x04cb, 0x011b)},
	252	{USB_DEVICE(0x04cb, 0x011d)},
	253	{USB_DEVICE(0x04cb, 0x0121)},
	254	{USB_DEVICE(0x04cb, 0x0123)},
	255	{USB_DEVICE(0x04cb, 0x0125)},
	256	{USB_DEVICE(0x04cb, 0x0127)},
	257	{USB_DEVICE(0x04cb, 0x0129)},
	258	{USB_DEVICE(0x04cb, 0x012b)},
	259	{USB_DEVICE(0x04cb, 0x012d)},
	260	{USB_DEVICE(0x04cb, 0x012f)},
	261	{USB_DEVICE(0x04cb, 0x0131)},
	262	{USB_DEVICE(0x04cb, 0x013b)},
	263	{USB_DEVICE(0x04cb, 0x013d)},
	264	{USB_DEVICE(0x04cb, 0x013f)},
	265	{}
	266	};
	267
	268	MODULE_DEVICE_TABLE(usb, device_table);
	269
	270	/* sub-driver description */
	271	static const struct sd_desc sd_desc = {
c0c4c893	272	.name = MODULE_NAME,
97076859	273	.config = sd_config,
c0c4c893 JFM	274	.init = sd_init,
	275	.start = sd_start,
	276	.stop0 = sd_stop0,
97076859 FZ	277	};
	278
	279	/* -- device connect -- */
	280	static int sd_probe(struct usb_interface *intf,
	281	const struct usb_device_id *id)
	282	{
	283	return gspca_dev_probe(intf, id,
	284	&sd_desc,
	285	sizeof(struct usb_fpix),
	286	THIS_MODULE);
	287	}
	288
	289	static struct usb_driver sd_driver = {
c0c4c893 JFM	290	.name = MODULE_NAME,
	291	.id_table = device_table,
	292	.probe = sd_probe,
97076859 FZ	293	.disconnect = gspca_disconnect,
	294	#ifdef CONFIG_PM
	295	.suspend = gspca_suspend,
c0c4c893	296	.resume = gspca_resume,
97076859 FZ	297	#endif
	298	};
	299
	300	/* -- module insert / remove -- */
	301	static int __init sd_mod_init(void)
	302	{
f69e9529	303	int ret;
c0c4c893	304
f69e9529 AK	305	ret = usb_register(&sd_driver);
f69e9529 AK	306	if (ret < 0)
e6b14849	307	return ret;
97076859 FZ	308	PDEBUG(D_PROBE, "registered");
	309	return 0;
	310	}
c0c4c893	311
97076859 FZ	312	static void __exit sd_mod_exit(void)
	313	{
	314	usb_deregister(&sd_driver);
	315	PDEBUG(D_PROBE, "deregistered");
	316	}
	317
	318	module_init(sd_mod_init);
	319	module_exit(sd_mod_exit);