[deliverable/linux.git] / drivers / media / video / saa7134 / saa7134-empress.c

/*
 *
 * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
 *
 *  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
 *  (at your option) 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>

#include "saa7134-reg.h"
#include "saa7134.h"

#include <media/saa6752hs.h>

/* ------------------------------------------------------------------ */

MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
MODULE_LICENSE("GPL");

static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
module_param_array(empress_nr, int, NULL, 0444);
MODULE_PARM_DESC(empress_nr,"ts device number");

static unsigned int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,"enable debug messages");

#define dprintk(fmt, arg...)	if (debug)			\
	printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)

/* ------------------------------------------------------------------ */

static void ts_reset_encoder(struct saa7134_dev* dev)
{
	if (!dev->empress_started)
		return;

	saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
	msleep(10);
   	saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
	msleep(100);
	dev->empress_started = 0;
}

static int ts_init_encoder(struct saa7134_dev* dev)
{
	ts_reset_encoder(dev);
	saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, NULL);
	dev->empress_started = 1;
 	return 0;
}

/* ------------------------------------------------------------------ */

static int ts_open(struct inode *inode, struct file *file)
{
	int minor = iminor(inode);
	struct saa7134_dev *h,*dev = NULL;
	struct list_head *list;
	int err;

	list_for_each(list,&saa7134_devlist) {
		h = list_entry(list, struct saa7134_dev, devlist);
		if (h->empress_dev && h->empress_dev->minor == minor)
			dev = h;
	}
	if (NULL == dev)
		return -ENODEV;

	dprintk("open minor=%d\n",minor);
	err = -EBUSY;
	if (down_trylock(&dev->empress_tsq.lock))
		goto done;
	if (dev->empress_users)
		goto done_up;

	dev->empress_users++;
	file->private_data = dev;
	err = 0;

done_up:
	up(&dev->empress_tsq.lock);
done:
	return err;
}

static int ts_release(struct inode *inode, struct file *file)
{
	struct saa7134_dev *dev = file->private_data;

	if (dev->empress_tsq.streaming)
		videobuf_streamoff(&dev->empress_tsq);
	down(&dev->empress_tsq.lock);
	if (dev->empress_tsq.reading)
		videobuf_read_stop(&dev->empress_tsq);
	videobuf_mmap_free(&dev->empress_tsq);
	dev->empress_users--;

	/* stop the encoder */
	ts_reset_encoder(dev);

	up(&dev->empress_tsq.lock);
	return 0;
}

static ssize_t
ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
{
	struct saa7134_dev *dev = file->private_data;

	if (!dev->empress_started)
		ts_init_encoder(dev);

	return videobuf_read_stream(&dev->empress_tsq,
				    data, count, ppos, 0,
				    file->f_flags & O_NONBLOCK);
}

static unsigned int
ts_poll(struct file *file, struct poll_table_struct *wait)
{
	struct saa7134_dev *dev = file->private_data;

	return videobuf_poll_stream(file, &dev->empress_tsq, wait);
}


static int
ts_mmap(struct file *file, struct vm_area_struct * vma)
{
	struct saa7134_dev *dev = file->private_data;

	return videobuf_mmap_mapper(&dev->empress_tsq, vma);
}

/*
 * This function is _not_ called directly, but from
 * video_generic_ioctl (and maybe others).  userspace
 * copying is done already, arg is a kernel pointer.
 */
static int ts_do_ioctl(struct inode *inode, struct file *file,
		       unsigned int cmd, void *arg)
{
	struct saa7134_dev *dev = file->private_data;

	if (debug > 1)
		saa7134_print_ioctl(dev->name,cmd);
	switch (cmd) {
	case VIDIOC_QUERYCAP:
	{
		struct v4l2_capability *cap = arg;

		memset(cap,0,sizeof(*cap));
                strcpy(cap->driver, "saa7134");
		strlcpy(cap->card, saa7134_boards[dev->board].name,
			sizeof(cap->card));
		sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
		cap->version = SAA7134_VERSION_CODE;
		cap->capabilities =
			V4L2_CAP_VIDEO_CAPTURE |
			V4L2_CAP_READWRITE |
			V4L2_CAP_STREAMING;
		return 0;
	}

	/* --- input switching --------------------------------------- */
	case VIDIOC_ENUMINPUT:
	{
		struct v4l2_input *i = arg;

		if (i->index != 0)
			return -EINVAL;
		i->type = V4L2_INPUT_TYPE_CAMERA;
		strcpy(i->name,"CCIR656");
		return 0;
	}
	case VIDIOC_G_INPUT:
	{
		int *i = arg;
		*i = 0;
		return 0;
	}
	case VIDIOC_S_INPUT:
	{
		int *i = arg;

		if (*i != 0)
			return -EINVAL;
		return 0;
	}
	/* --- capture ioctls ---------------------------------------- */

	case VIDIOC_ENUM_FMT:
	{
		struct v4l2_fmtdesc *f = arg;
		int index;

		index = f->index;
		if (index != 0)
			return -EINVAL;

		memset(f,0,sizeof(*f));
		f->index = index;
		strlcpy(f->description, "MPEG TS", sizeof(f->description));
		f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
		f->pixelformat = V4L2_PIX_FMT_MPEG;
		return 0;
	}

	case VIDIOC_G_FMT:
	{
		struct v4l2_format *f = arg;

		memset(f,0,sizeof(*f));
		f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;

		saa7134_i2c_call_clients(dev, cmd, arg);
		f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
		f->fmt.pix.sizeimage    = TS_PACKET_SIZE * dev->ts.nr_packets;
		return 0;
	}

	case VIDIOC_S_FMT:
	{
		struct v4l2_format *f = arg;

		if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		    return -EINVAL;

		saa7134_i2c_call_clients(dev, cmd, arg);
		f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
		f->fmt.pix.sizeimage    = TS_PACKET_SIZE* dev->ts.nr_packets;
		return 0;
	}

	case VIDIOC_REQBUFS:
		return videobuf_reqbufs(&dev->empress_tsq,arg);

	case VIDIOC_QUERYBUF:
		return videobuf_querybuf(&dev->empress_tsq,arg);

	case VIDIOC_QBUF:
		return videobuf_qbuf(&dev->empress_tsq,arg);

	case VIDIOC_DQBUF:
		return videobuf_dqbuf(&dev->empress_tsq,arg,
				      file->f_flags & O_NONBLOCK);

	case VIDIOC_STREAMON:
		return videobuf_streamon(&dev->empress_tsq);

	case VIDIOC_STREAMOFF:
		return videobuf_streamoff(&dev->empress_tsq);

	case VIDIOC_QUERYCTRL:
	case VIDIOC_G_CTRL:
	case VIDIOC_S_CTRL:
		return saa7134_common_ioctl(dev, cmd, arg);

	case VIDIOC_S_MPEGCOMP:
		saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg);
		ts_init_encoder(dev);
		return 0;
	case VIDIOC_G_MPEGCOMP:
		saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg);
		return 0;

	default:
		return -ENOIOCTLCMD;
	}
	return 0;
}

static int ts_ioctl(struct inode *inode, struct file *file,
		     unsigned int cmd, unsigned long arg)
{
	return video_usercopy(inode, file, cmd, arg, ts_do_ioctl);
}

static struct file_operations ts_fops =
{
	.owner	  = THIS_MODULE,
	.open	  = ts_open,
	.release  = ts_release,
	.read	  = ts_read,
	.poll	  = ts_poll,
	.mmap	  = ts_mmap,
	.ioctl	  = ts_ioctl,
	.llseek   = no_llseek,
};

/* ----------------------------------------------------------- */

static struct video_device saa7134_empress_template =
{
	.name          = "saa7134-empress",
	.type          = 0 /* FIXME */,
	.type2         = 0 /* FIXME */,
	.hardware      = 0,
	.fops          = &ts_fops,
	.minor	       = -1,
};

static void empress_signal_update(void* data)
{
	struct saa7134_dev* dev = (struct saa7134_dev*) data;

	if (dev->nosignal) {
		dprintk("no video signal\n");
		ts_reset_encoder(dev);
	} else {
		dprintk("video signal acquired\n");
		if (dev->empress_users)
			ts_init_encoder(dev);
	}
}

static void empress_signal_change(struct saa7134_dev *dev)
{
	schedule_work(&dev->empress_workqueue);
}


static int empress_init(struct saa7134_dev *dev)
{
	int err;

	dprintk("%s: %s\n",dev->name,__FUNCTION__);
	dev->empress_dev = video_device_alloc();
	if (NULL == dev->empress_dev)
		return -ENOMEM;
	*(dev->empress_dev) = saa7134_empress_template;
	dev->empress_dev->dev     = &dev->pci->dev;
	dev->empress_dev->release = video_device_release;
	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
		 "%s empress (%s)", dev->name,
		 saa7134_boards[dev->board].name);

	INIT_WORK(&dev->empress_workqueue, empress_signal_update, (void*) dev);

	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
				    empress_nr[dev->nr]);
	if (err < 0) {
		printk(KERN_INFO "%s: can't register video device\n",
		       dev->name);
		video_device_release(dev->empress_dev);
		dev->empress_dev = NULL;
		return err;
	}
	printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
	       dev->name,dev->empress_dev->minor & 0x1f);

	videobuf_queue_init(&dev->empress_tsq, &saa7134_ts_qops,
			    dev->pci, &dev->slock,
			    V4L2_BUF_TYPE_VIDEO_CAPTURE,
			    V4L2_FIELD_ALTERNATE,
			    sizeof(struct saa7134_buf),
			    dev);

	empress_signal_update(dev);
	return 0;
}

static int empress_fini(struct saa7134_dev *dev)
{
	dprintk("%s: %s\n",dev->name,__FUNCTION__);

	if (NULL == dev->empress_dev)
		return 0;
	flush_scheduled_work();
	video_unregister_device(dev->empress_dev);
	dev->empress_dev = NULL;
	return 0;
}

static struct saa7134_mpeg_ops empress_ops = {
	.type          = SAA7134_MPEG_EMPRESS,
	.init          = empress_init,
	.fini          = empress_fini,
	.signal_change = empress_signal_change,
};

static int __init empress_register(void)
{
	return saa7134_ts_register(&empress_ops);
}

static void __exit empress_unregister(void)
{
	saa7134_ts_unregister(&empress_ops);
}

module_init(empress_register);
module_exit(empress_unregister);

/* ----------------------------------------------------------- */
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	*
	3	* (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	18	*/
	19
	20	#include <linux/init.h>
	21	#include <linux/list.h>
	22	#include <linux/module.h>
	23	#include <linux/moduleparam.h>
	24	#include <linux/kernel.h>
	25	#include <linux/slab.h>
	26	#include <linux/delay.h>
	27
	28	#include "saa7134-reg.h"
	29	#include "saa7134.h"
	30
	31	#include <media/saa6752hs.h>
	32
	33	/* ------------------------------------------------------------------ */
	34
	35	MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
	36	MODULE_LICENSE("GPL");
	37
	38	static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
	39	module_param_array(empress_nr, int, NULL, 0444);
	40	MODULE_PARM_DESC(empress_nr,"ts device number");
	41
	42	static unsigned int debug = 0;
	43	module_param(debug, int, 0644);
	44	MODULE_PARM_DESC(debug,"enable debug messages");
	45
	46	#define dprintk(fmt, arg...) if (debug) \
	47	printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
	48
	49	/* ------------------------------------------------------------------ */
	50
	51	static void ts_reset_encoder(struct saa7134_dev* dev)
	52	{
	53	if (!dev->empress_started)
	54	return;
	55
	56	saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
	57	msleep(10);
	58	saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
	59	msleep(100);
	60	dev->empress_started = 0;
	61	}
	62
	63	static int ts_init_encoder(struct saa7134_dev* dev)
	64	{
	65	ts_reset_encoder(dev);
66	saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, NULL);
67	dev->empress_started = 1;
68	return 0;
69	}
70
71	/* ------------------------------------------------------------------ */
72
73	static int ts_open(struct inode inode, struct file file)
74	{
75	int minor = iminor(inode);
76	struct saa7134_dev h,dev = NULL;
77	struct list_head *list;
78	int err;
79
80	list_for_each(list,&saa7134_devlist) {
81	h = list_entry(list, struct saa7134_dev, devlist);
82	if (h->empress_dev && h->empress_dev->minor == minor)
83	dev = h;
84	}
85	if (NULL == dev)
86	return -ENODEV;
87
88	dprintk("open minor=%d\n",minor);
89	err = -EBUSY;
90	if (down_trylock(&dev->empress_tsq.lock))
91	goto done;
92	if (dev->empress_users)
93	goto done_up;
94
95	dev->empress_users++;
96	file->private_data = dev;
97	err = 0;
98
99	done_up:
100	up(&dev->empress_tsq.lock);
101	done:
102	return err;
103	}
104
105	static int ts_release(struct inode inode, struct file file)
106	{
107	struct saa7134_dev *dev = file->private_data;
108
109	if (dev->empress_tsq.streaming)
110	videobuf_streamoff(&dev->empress_tsq);
111	down(&dev->empress_tsq.lock);
112	if (dev->empress_tsq.reading)
113	videobuf_read_stop(&dev->empress_tsq);
114	videobuf_mmap_free(&dev->empress_tsq);
115	dev->empress_users--;
116
117	/* stop the encoder */
118	ts_reset_encoder(dev);
119
120	up(&dev->empress_tsq.lock);
121	return 0;
122	}
123
124	static ssize_t
125	ts_read(struct file file, char __user data, size_t count, loff_t *ppos)
126	{
127	struct saa7134_dev *dev = file->private_data;
128
129	if (!dev->empress_started)
130	ts_init_encoder(dev);
131
132	return videobuf_read_stream(&dev->empress_tsq,
133	data, count, ppos, 0,
134	file->f_flags & O_NONBLOCK);
135	}
136
137	static unsigned int
138	ts_poll(struct file file, struct poll_table_struct wait)
139	{
140	struct saa7134_dev *dev = file->private_data;
141
142	return videobuf_poll_stream(file, &dev->empress_tsq, wait);
143	}
144
145
146	static int
147	ts_mmap(struct file file, struct vm_area_struct vma)
148	{
149	struct saa7134_dev *dev = file->private_data;
150
151	return videobuf_mmap_mapper(&dev->empress_tsq, vma);
152	}
153
154	/*
155	* This function is _not_ called directly, but from
156	* video_generic_ioctl (and maybe others). userspace
157	* copying is done already, arg is a kernel pointer.
158	*/
159	static int ts_do_ioctl(struct inode inode, struct file file,
160	unsigned int cmd, void *arg)
161	{
162	struct saa7134_dev *dev = file->private_data;
163
164	if (debug > 1)
165	saa7134_print_ioctl(dev->name,cmd);
166	switch (cmd) {
167	case VIDIOC_QUERYCAP:
168	{
169	struct v4l2_capability *cap = arg;
170
171	memset(cap,0,sizeof(*cap));
172	strcpy(cap->driver, "saa7134");
173	strlcpy(cap->card, saa7134_boards[dev->board].name,
174	sizeof(cap->card));
175	sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
176	cap->version = SAA7134_VERSION_CODE;
177	cap->capabilities =
178	V4L2_CAP_VIDEO_CAPTURE \|
179	V4L2_CAP_READWRITE \|
180	V4L2_CAP_STREAMING;
181	return 0;
182	}
183
184	/* --- input switching --------------------------------------- */
185	case VIDIOC_ENUMINPUT:
186	{
187	struct v4l2_input *i = arg;
188
189	if (i->index != 0)
190	return -EINVAL;
191	i->type = V4L2_INPUT_TYPE_CAMERA;
192	strcpy(i->name,"CCIR656");
193	return 0;
194	}
195	case VIDIOC_G_INPUT:
196	{
197	int *i = arg;
198	*i = 0;
199	return 0;
200	}
201	case VIDIOC_S_INPUT:
202	{
203	int *i = arg;
204
205	if (*i != 0)
206	return -EINVAL;
207	return 0;
208	}
209	/* --- capture ioctls ---------------------------------------- */
210
211	case VIDIOC_ENUM_FMT:
212	{
213	struct v4l2_fmtdesc *f = arg;
214	int index;
215
216	index = f->index;
217	if (index != 0)
218	return -EINVAL;
219
220	memset(f,0,sizeof(*f));
221	f->index = index;
222	strlcpy(f->description, "MPEG TS", sizeof(f->description));
223	f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
224	f->pixelformat = V4L2_PIX_FMT_MPEG;
225	return 0;
226	}
227
228	case VIDIOC_G_FMT:
229	{
230	struct v4l2_format *f = arg;
231
232	memset(f,0,sizeof(*f));
233	f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
234
0a4c9c93	235	saa7134_i2c_call_clients(dev, cmd, arg);
1da177e4 LT	236	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
	237	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
	238	return 0;
	239	}
	240
	241	case VIDIOC_S_FMT:
	242	{
	243	struct v4l2_format *f = arg;
	244
	245	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	246	return -EINVAL;
	247
0a4c9c93	248	saa7134_i2c_call_clients(dev, cmd, arg);
1da177e4 LT	249	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
	250	f->fmt.pix.sizeimage = TS_PACKET_SIZE* dev->ts.nr_packets;
	251	return 0;
	252	}
	253
	254	case VIDIOC_REQBUFS:
	255	return videobuf_reqbufs(&dev->empress_tsq,arg);
	256
	257	case VIDIOC_QUERYBUF:
	258	return videobuf_querybuf(&dev->empress_tsq,arg);
	259
	260	case VIDIOC_QBUF:
	261	return videobuf_qbuf(&dev->empress_tsq,arg);
	262
	263	case VIDIOC_DQBUF:
	264	return videobuf_dqbuf(&dev->empress_tsq,arg,
	265	file->f_flags & O_NONBLOCK);
	266
	267	case VIDIOC_STREAMON:
	268	return videobuf_streamon(&dev->empress_tsq);
	269
	270	case VIDIOC_STREAMOFF:
	271	return videobuf_streamoff(&dev->empress_tsq);
	272
	273	case VIDIOC_QUERYCTRL:
	274	case VIDIOC_G_CTRL:
	275	case VIDIOC_S_CTRL:
	276	return saa7134_common_ioctl(dev, cmd, arg);
	277
	278	case VIDIOC_S_MPEGCOMP:
	279	saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg);
	280	ts_init_encoder(dev);
	281	return 0;
	282	case VIDIOC_G_MPEGCOMP:
	283	saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg);
	284	return 0;
	285
	286	default:
	287	return -ENOIOCTLCMD;
	288	}
	289	return 0;
	290	}
	291
	292	static int ts_ioctl(struct inode inode, struct file file,
	293	unsigned int cmd, unsigned long arg)
	294	{
	295	return video_usercopy(inode, file, cmd, arg, ts_do_ioctl);
	296	}
	297
	298	static struct file_operations ts_fops =
	299	{
	300	.owner = THIS_MODULE,
	301	.open = ts_open,
	302	.release = ts_release,
	303	.read = ts_read,
	304	.poll = ts_poll,
	305	.mmap = ts_mmap,
	306	.ioctl = ts_ioctl,
	307	.llseek = no_llseek,
	308	};
	309
	310	/* ----------------------------------------------------------- */
	311
	312	static struct video_device saa7134_empress_template =
313	{
314	.name = "saa7134-empress",
315	.type = 0 /* FIXME */,
316	.type2 = 0 /* FIXME */,
317	.hardware = 0,
318	.fops = &ts_fops,
319	.minor = -1,
320	};
321
322	static void empress_signal_update(void* data)
323	{
324	struct saa7134_dev* dev = (struct saa7134_dev*) data;
325
326	if (dev->nosignal) {
327	dprintk("no video signal\n");
328	ts_reset_encoder(dev);
329	} else {
330	dprintk("video signal acquired\n");
331	if (dev->empress_users)
332	ts_init_encoder(dev);
333	}
334	}
335
336	static void empress_signal_change(struct saa7134_dev *dev)
337	{
338	schedule_work(&dev->empress_workqueue);
339	}
340
341
342	static int empress_init(struct saa7134_dev *dev)
343	{
344	int err;
345
346	dprintk("%s: %s\n",dev->name,__FUNCTION__);
347	dev->empress_dev = video_device_alloc();
348	if (NULL == dev->empress_dev)
349	return -ENOMEM;
350	*(dev->empress_dev) = saa7134_empress_template;
351	dev->empress_dev->dev = &dev->pci->dev;
352	dev->empress_dev->release = video_device_release;
353	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
354	"%s empress (%s)", dev->name,
355	saa7134_boards[dev->board].name);
356
357	INIT_WORK(&dev->empress_workqueue, empress_signal_update, (void*) dev);
358
359	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
360	empress_nr[dev->nr]);
361	if (err < 0) {
362	printk(KERN_INFO "%s: can't register video device\n",
363	dev->name);
364	video_device_release(dev->empress_dev);
365	dev->empress_dev = NULL;
366	return err;
367	}
368	printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
369	dev->name,dev->empress_dev->minor & 0x1f);
370
371	videobuf_queue_init(&dev->empress_tsq, &saa7134_ts_qops,
372	dev->pci, &dev->slock,
373	V4L2_BUF_TYPE_VIDEO_CAPTURE,
374	V4L2_FIELD_ALTERNATE,
375	sizeof(struct saa7134_buf),
376	dev);
377
378	empress_signal_update(dev);
379	return 0;
380	}
381
382	static int empress_fini(struct saa7134_dev *dev)
383	{
384	dprintk("%s: %s\n",dev->name,__FUNCTION__);
385
386	if (NULL == dev->empress_dev)
387	return 0;
388	flush_scheduled_work();
389	video_unregister_device(dev->empress_dev);
390	dev->empress_dev = NULL;
391	return 0;
392	}
393
394	static struct saa7134_mpeg_ops empress_ops = {
395	.type = SAA7134_MPEG_EMPRESS,
396	.init = empress_init,
397	.fini = empress_fini,
398	.signal_change = empress_signal_change,
399	};
400
401	static int __init empress_register(void)
402	{
403	return saa7134_ts_register(&empress_ops);
404	}
405
406	static void __exit empress_unregister(void)
407	{
408	saa7134_ts_unregister(&empress_ops);
409	}
410
411	module_init(empress_register);
412	module_exit(empress_unregister);
413
414	/* ----------------------------------------------------------- */
415	/*
416	* Local variables:
417	* c-basic-offset: 8
418	* End:
419	*/