[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>
#include <media/v4l2-common.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)
{
	struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 };

	ts_reset_encoder(dev);
	saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls);
	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 (!mutex_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:
	mutex_unlock(&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);
	mutex_lock(&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);

	mutex_unlock(&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;
	struct v4l2_ext_controls *ctrls = arg;

	if (debug > 1)
		v4l_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;
	case VIDIOC_S_EXT_CTRLS:
		/* count == 0 is abused in saa6752hs.c, so that special
		   case is handled here explicitly. */
		if (ctrls->count == 0)
			return 0;
		if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
			return -EINVAL;
		saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, arg);
		ts_init_encoder(dev);
		return 0;
	case VIDIOC_G_EXT_CTRLS:
		if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
			return -EINVAL;
		saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, 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>
5e453dc7	32	#include <media/v4l2-common.h>
1da177e4 LT	33
	34	/* ------------------------------------------------------------------ */
	35
	36	MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
	37	MODULE_LICENSE("GPL");
	38
	39	static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
674434c6	40
1da177e4 LT	41	module_param_array(empress_nr, int, NULL, 0444);
	42	MODULE_PARM_DESC(empress_nr,"ts device number");
	43
	44	static unsigned int debug = 0;
	45	module_param(debug, int, 0644);
	46	MODULE_PARM_DESC(debug,"enable debug messages");
	47
	48	#define dprintk(fmt, arg...) if (debug) \
	49	printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
	50
	51	/* ------------------------------------------------------------------ */
	52
	53	static void ts_reset_encoder(struct saa7134_dev* dev)
	54	{
	55	if (!dev->empress_started)
	56	return;
	57
	58	saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
	59	msleep(10);
4ac97914	60	saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
1da177e4 LT	61	msleep(100);
	62	dev->empress_started = 0;
	63	}
	64
	65	static int ts_init_encoder(struct saa7134_dev* dev)
	66	{
86b79d66 HV	67	struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 };
86b79d66 HV	68
1da177e4	69	ts_reset_encoder(dev);
86b79d66	70	saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls);
1da177e4	71	dev->empress_started = 1;
4ac97914	72	return 0;
1da177e4 LT	73	}
	74
	75	/* ------------------------------------------------------------------ */
	76
	77	static int ts_open(struct inode inode, struct file file)
	78	{
	79	int minor = iminor(inode);
	80	struct saa7134_dev h,dev = NULL;
	81	struct list_head *list;
	82	int err;
	83
	84	list_for_each(list,&saa7134_devlist) {
	85	h = list_entry(list, struct saa7134_dev, devlist);
	86	if (h->empress_dev && h->empress_dev->minor == minor)
	87	dev = h;
	88	}
	89	if (NULL == dev)
	90	return -ENODEV;
	91
	92	dprintk("open minor=%d\n",minor);
	93	err = -EBUSY;
3593cab5	94	if (!mutex_trylock(&dev->empress_tsq.lock))
1da177e4 LT	95	goto done;
	96	if (dev->empress_users)
	97	goto done_up;
	98
	99	dev->empress_users++;
	100	file->private_data = dev;
	101	err = 0;
	102
	103	done_up:
3593cab5	104	mutex_unlock(&dev->empress_tsq.lock);
1da177e4 LT	105	done:
	106	return err;
	107	}
	108
	109	static int ts_release(struct inode inode, struct file file)
	110	{
	111	struct saa7134_dev *dev = file->private_data;
	112
	113	if (dev->empress_tsq.streaming)
	114	videobuf_streamoff(&dev->empress_tsq);
3593cab5	115	mutex_lock(&dev->empress_tsq.lock);
1da177e4 LT	116	if (dev->empress_tsq.reading)
	117	videobuf_read_stop(&dev->empress_tsq);
	118	videobuf_mmap_free(&dev->empress_tsq);
	119	dev->empress_users--;
	120
	121	/* stop the encoder */
	122	ts_reset_encoder(dev);
	123
3593cab5	124	mutex_unlock(&dev->empress_tsq.lock);
1da177e4 LT	125	return 0;
	126	}
	127
	128	static ssize_t
	129	ts_read(struct file file, char __user data, size_t count, loff_t *ppos)
	130	{
	131	struct saa7134_dev *dev = file->private_data;
	132
	133	if (!dev->empress_started)
	134	ts_init_encoder(dev);
	135
	136	return videobuf_read_stream(&dev->empress_tsq,
	137	data, count, ppos, 0,
	138	file->f_flags & O_NONBLOCK);
	139	}
	140
	141	static unsigned int
	142	ts_poll(struct file file, struct poll_table_struct wait)
	143	{
	144	struct saa7134_dev *dev = file->private_data;
	145
	146	return videobuf_poll_stream(file, &dev->empress_tsq, wait);
	147	}
	148
	149
	150	static int
	151	ts_mmap(struct file file, struct vm_area_struct vma)
	152	{
	153	struct saa7134_dev *dev = file->private_data;
	154
	155	return videobuf_mmap_mapper(&dev->empress_tsq, vma);
	156	}
	157
	158	/*
	159	* This function is _not_ called directly, but from
	160	* video_generic_ioctl (and maybe others). userspace
	161	* copying is done already, arg is a kernel pointer.
	162	*/
	163	static int ts_do_ioctl(struct inode inode, struct file file,
	164	unsigned int cmd, void *arg)
	165	{
	166	struct saa7134_dev *dev = file->private_data;
86b79d66	167	struct v4l2_ext_controls *ctrls = arg;
1da177e4 LT	168
1da177e4 LT	169	if (debug > 1)
5e453dc7	170	v4l_print_ioctl(dev->name,cmd);
1da177e4 LT	171	switch (cmd) {
	172	case VIDIOC_QUERYCAP:
	173	{
	174	struct v4l2_capability *cap = arg;
	175
	176	memset(cap,0,sizeof(*cap));
4ac97914	177	strcpy(cap->driver, "saa7134");
1da177e4 LT	178	strlcpy(cap->card, saa7134_boards[dev->board].name,
	179	sizeof(cap->card));
	180	sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
	181	cap->version = SAA7134_VERSION_CODE;
	182	cap->capabilities =
	183	V4L2_CAP_VIDEO_CAPTURE \|
	184	V4L2_CAP_READWRITE \|
	185	V4L2_CAP_STREAMING;
	186	return 0;
	187	}
	188
	189	/* --- input switching --------------------------------------- */
	190	case VIDIOC_ENUMINPUT:
	191	{
	192	struct v4l2_input *i = arg;
	193
	194	if (i->index != 0)
	195	return -EINVAL;
	196	i->type = V4L2_INPUT_TYPE_CAMERA;
	197	strcpy(i->name,"CCIR656");
	198	return 0;
	199	}
	200	case VIDIOC_G_INPUT:
	201	{
	202	int *i = arg;
	203	*i = 0;
	204	return 0;
	205	}
	206	case VIDIOC_S_INPUT:
	207	{
	208	int *i = arg;
	209
	210	if (*i != 0)
	211	return -EINVAL;
	212	return 0;
	213	}
	214	/* --- capture ioctls ---------------------------------------- */
	215
	216	case VIDIOC_ENUM_FMT:
	217	{
	218	struct v4l2_fmtdesc *f = arg;
	219	int index;
	220
	221	index = f->index;
	222	if (index != 0)
	223	return -EINVAL;
	224
	225	memset(f,0,sizeof(*f));
	226	f->index = index;
	227	strlcpy(f->description, "MPEG TS", sizeof(f->description));
	228	f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	229	f->pixelformat = V4L2_PIX_FMT_MPEG;
	230	return 0;
	231	}
	232
	233	case VIDIOC_G_FMT:
	234	{
	235	struct v4l2_format *f = arg;
	236
	237	memset(f,0,sizeof(*f));
	238	f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	239
0a4c9c93	240	saa7134_i2c_call_clients(dev, cmd, arg);
1da177e4 LT	241	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
	242	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
	243	return 0;
	244	}
	245
	246	case VIDIOC_S_FMT:
	247	{
	248	struct v4l2_format *f = arg;
	249
	250	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	251	return -EINVAL;
	252
0a4c9c93	253	saa7134_i2c_call_clients(dev, cmd, arg);
1da177e4 LT	254	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
	255	f->fmt.pix.sizeimage = TS_PACKET_SIZE* dev->ts.nr_packets;
	256	return 0;
	257	}
	258
	259	case VIDIOC_REQBUFS:
	260	return videobuf_reqbufs(&dev->empress_tsq,arg);
	261
	262	case VIDIOC_QUERYBUF:
	263	return videobuf_querybuf(&dev->empress_tsq,arg);
	264
	265	case VIDIOC_QBUF:
	266	return videobuf_qbuf(&dev->empress_tsq,arg);
	267
	268	case VIDIOC_DQBUF:
	269	return videobuf_dqbuf(&dev->empress_tsq,arg,
	270	file->f_flags & O_NONBLOCK);
	271
	272	case VIDIOC_STREAMON:
	273	return videobuf_streamon(&dev->empress_tsq);
	274
	275	case VIDIOC_STREAMOFF:
	276	return videobuf_streamoff(&dev->empress_tsq);
	277
	278	case VIDIOC_QUERYCTRL:
	279	case VIDIOC_G_CTRL:
	280	case VIDIOC_S_CTRL:
	281	return saa7134_common_ioctl(dev, cmd, arg);
	282
	283	case VIDIOC_S_MPEGCOMP:
	284	saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg);
	285	ts_init_encoder(dev);
	286	return 0;
	287	case VIDIOC_G_MPEGCOMP:
	288	saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg);
	289	return 0;
86b79d66 HV	290	case VIDIOC_S_EXT_CTRLS:
	291	/* count == 0 is abused in saa6752hs.c, so that special
	292	case is handled here explicitly. */
	293	if (ctrls->count == 0)
	294	return 0;
	295	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	296	return -EINVAL;
	297	saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, arg);
	298	ts_init_encoder(dev);
	299	return 0;
	300	case VIDIOC_G_EXT_CTRLS:
	301	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	302	return -EINVAL;
	303	saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, arg);
	304	return 0;
1da177e4 LT	305
	306	default:
	307	return -ENOIOCTLCMD;
	308	}
	309	return 0;
	310	}
	311
	312	static int ts_ioctl(struct inode inode, struct file file,
	313	unsigned int cmd, unsigned long arg)
	314	{
	315	return video_usercopy(inode, file, cmd, arg, ts_do_ioctl);
	316	}
	317
	318	static struct file_operations ts_fops =
	319	{
	320	.owner = THIS_MODULE,
	321	.open = ts_open,
	322	.release = ts_release,
	323	.read = ts_read,
	324	.poll = ts_poll,
	325	.mmap = ts_mmap,
	326	.ioctl = ts_ioctl,
	327	.llseek = no_llseek,
	328	};
	329
	330	/* ----------------------------------------------------------- */
	331
	332	static struct video_device saa7134_empress_template =
	333	{
	334	.name = "saa7134-empress",
	335	.type = 0 /* FIXME */,
	336	.type2 = 0 /* FIXME */,
	337	.hardware = 0,
	338	.fops = &ts_fops,
	339	.minor = -1,
	340	};
	341
	342	static void empress_signal_update(void* data)
	343	{
	344	struct saa7134_dev* dev = (struct saa7134_dev*) data;
	345
	346	if (dev->nosignal) {
	347	dprintk("no video signal\n");
	348	ts_reset_encoder(dev);
	349	} else {
	350	dprintk("video signal acquired\n");
	351	if (dev->empress_users)
	352	ts_init_encoder(dev);
	353	}
	354	}
	355
	356	static void empress_signal_change(struct saa7134_dev *dev)
	357	{
	358	schedule_work(&dev->empress_workqueue);
	359	}
	360
	361
	362	static int empress_init(struct saa7134_dev *dev)
	363	{
	364	int err;
	365
	366	dprintk("%s: %s\n",dev->name,__FUNCTION__);
	367	dev->empress_dev = video_device_alloc();
	368	if (NULL == dev->empress_dev)
369	return -ENOMEM;
370	*(dev->empress_dev) = saa7134_empress_template;
371	dev->empress_dev->dev = &dev->pci->dev;
372	dev->empress_dev->release = video_device_release;
373	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
374	"%s empress (%s)", dev->name,
375	saa7134_boards[dev->board].name);
376
377	INIT_WORK(&dev->empress_workqueue, empress_signal_update, (void*) dev);
378
379	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
380	empress_nr[dev->nr]);
381	if (err < 0) {
382	printk(KERN_INFO "%s: can't register video device\n",
383	dev->name);
384	video_device_release(dev->empress_dev);
385	dev->empress_dev = NULL;
386	return err;
387	}
388	printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
389	dev->name,dev->empress_dev->minor & 0x1f);
390
391	videobuf_queue_init(&dev->empress_tsq, &saa7134_ts_qops,
392	dev->pci, &dev->slock,
393	V4L2_BUF_TYPE_VIDEO_CAPTURE,
394	V4L2_FIELD_ALTERNATE,
395	sizeof(struct saa7134_buf),
396	dev);
397
398	empress_signal_update(dev);
399	return 0;
400	}
401
402	static int empress_fini(struct saa7134_dev *dev)
403	{
404	dprintk("%s: %s\n",dev->name,__FUNCTION__);
405
406	if (NULL == dev->empress_dev)
407	return 0;
408	flush_scheduled_work();
409	video_unregister_device(dev->empress_dev);
410	dev->empress_dev = NULL;
411	return 0;
412	}
413
414	static struct saa7134_mpeg_ops empress_ops = {
415	.type = SAA7134_MPEG_EMPRESS,
416	.init = empress_init,
417	.fini = empress_fini,
418	.signal_change = empress_signal_change,
419	};
420
421	static int __init empress_register(void)
422	{
423	return saa7134_ts_register(&empress_ops);
424	}
425
426	static void __exit empress_unregister(void)
427	{
428	saa7134_ts_unregister(&empress_ops);
429	}
430
431	module_init(empress_register);
432	module_exit(empress_unregister);
433
434	/* ----------------------------------------------------------- */
435	/*
436	* Local variables:
437	* c-basic-offset: 8
438	* End:
439	*/