[mirror_ubuntu-artful-kernel.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/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;

	/* Unmute audio */
	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
		saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));

	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);

	/* Mute audio */
	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
		saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));

	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:
		printk(KERN_WARNING "VIDIOC_S_MPEGCOMP is obsolete. "
				    "Replace with VIDIOC_S_EXT_CTRLS!");
		saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg);
		ts_init_encoder(dev);
		return 0;
	case VIDIOC_G_MPEGCOMP:
		printk(KERN_WARNING "VIDIOC_G_MPEGCOMP is obsolete. "
				    "Replace with VIDIOC_G_EXT_CTRLS!");
		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 const 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(struct work_struct *work)
{
	struct saa7134_dev* dev =
		container_of(work, struct saa7134_dev, empress_workqueue);

	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);

	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->empress_workqueue);
	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>
1da177e4 LT	23	#include <linux/kernel.h>
	24	#include <linux/slab.h>
	25	#include <linux/delay.h>
	26
	27	#include "saa7134-reg.h"
	28	#include "saa7134.h"
	29
	30	#include <media/saa6752hs.h>
5e453dc7	31	#include <media/v4l2-common.h>
1da177e4 LT	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 };
674434c6	39
1da177e4 LT	40	module_param_array(empress_nr, int, NULL, 0444);
	41	MODULE_PARM_DESC(empress_nr,"ts device number");
	42
	43	static unsigned int debug = 0;
	44	module_param(debug, int, 0644);
	45	MODULE_PARM_DESC(debug,"enable debug messages");
	46
	47	#define dprintk(fmt, arg...) if (debug) \
	48	printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
	49
	50	/* ------------------------------------------------------------------ */
	51
	52	static void ts_reset_encoder(struct saa7134_dev* dev)
	53	{
	54	if (!dev->empress_started)
	55	return;
	56
	57	saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
	58	msleep(10);
4ac97914	59	saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
1da177e4 LT	60	msleep(100);
	61	dev->empress_started = 0;
	62	}
	63
	64	static int ts_init_encoder(struct saa7134_dev* dev)
	65	{
86b79d66 HV	66	struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 };
86b79d66 HV	67
1da177e4	68	ts_reset_encoder(dev);
86b79d66	69	saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls);
1da177e4	70	dev->empress_started = 1;
4ac97914	71	return 0;
1da177e4 LT	72	}
	73
	74	/* ------------------------------------------------------------------ */
	75
	76	static int ts_open(struct inode inode, struct file file)
	77	{
	78	int minor = iminor(inode);
	79	struct saa7134_dev h,dev = NULL;
	80	struct list_head *list;
	81	int err;
	82
	83	list_for_each(list,&saa7134_devlist) {
	84	h = list_entry(list, struct saa7134_dev, devlist);
	85	if (h->empress_dev && h->empress_dev->minor == minor)
	86	dev = h;
	87	}
	88	if (NULL == dev)
	89	return -ENODEV;
	90
	91	dprintk("open minor=%d\n",minor);
	92	err = -EBUSY;
3593cab5	93	if (!mutex_trylock(&dev->empress_tsq.lock))
1da177e4 LT	94	goto done;
	95	if (dev->empress_users)
	96	goto done_up;
	97
b784e526 RB	98	/* Unmute audio */
	99	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
	100	saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
	101
1da177e4 LT	102	dev->empress_users++;
	103	file->private_data = dev;
	104	err = 0;
	105
	106	done_up:
3593cab5	107	mutex_unlock(&dev->empress_tsq.lock);
1da177e4 LT	108	done:
	109	return err;
	110	}
	111
	112	static int ts_release(struct inode inode, struct file file)
	113	{
	114	struct saa7134_dev *dev = file->private_data;
	115
	116	if (dev->empress_tsq.streaming)
	117	videobuf_streamoff(&dev->empress_tsq);
3593cab5	118	mutex_lock(&dev->empress_tsq.lock);
1da177e4 LT	119	if (dev->empress_tsq.reading)
	120	videobuf_read_stop(&dev->empress_tsq);
	121	videobuf_mmap_free(&dev->empress_tsq);
	122	dev->empress_users--;
	123
	124	/* stop the encoder */
	125	ts_reset_encoder(dev);
	126
b784e526 RB	127	/* Mute audio */
	128	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
	129	saa_readb(SAA7134_AUDIO_MUTE_CTRL) \| (1 << 6));
	130
3593cab5	131	mutex_unlock(&dev->empress_tsq.lock);
1da177e4 LT	132	return 0;
	133	}
	134
	135	static ssize_t
	136	ts_read(struct file file, char __user data, size_t count, loff_t *ppos)
	137	{
	138	struct saa7134_dev *dev = file->private_data;
	139
	140	if (!dev->empress_started)
	141	ts_init_encoder(dev);
	142
	143	return videobuf_read_stream(&dev->empress_tsq,
	144	data, count, ppos, 0,
	145	file->f_flags & O_NONBLOCK);
	146	}
	147
	148	static unsigned int
	149	ts_poll(struct file file, struct poll_table_struct wait)
	150	{
	151	struct saa7134_dev *dev = file->private_data;
	152
	153	return videobuf_poll_stream(file, &dev->empress_tsq, wait);
	154	}
	155
	156
	157	static int
	158	ts_mmap(struct file file, struct vm_area_struct vma)
	159	{
	160	struct saa7134_dev *dev = file->private_data;
	161
	162	return videobuf_mmap_mapper(&dev->empress_tsq, vma);
	163	}
	164
	165	/*
	166	* This function is _not_ called directly, but from
	167	* video_generic_ioctl (and maybe others). userspace
	168	* copying is done already, arg is a kernel pointer.
	169	*/
	170	static int ts_do_ioctl(struct inode inode, struct file file,
	171	unsigned int cmd, void *arg)
	172	{
	173	struct saa7134_dev *dev = file->private_data;
86b79d66	174	struct v4l2_ext_controls *ctrls = arg;
1da177e4 LT	175
1da177e4 LT	176	if (debug > 1)
5e453dc7	177	v4l_print_ioctl(dev->name,cmd);
1da177e4 LT	178	switch (cmd) {
	179	case VIDIOC_QUERYCAP:
	180	{
	181	struct v4l2_capability *cap = arg;
	182
	183	memset(cap,0,sizeof(*cap));
4ac97914	184	strcpy(cap->driver, "saa7134");
1da177e4 LT	185	strlcpy(cap->card, saa7134_boards[dev->board].name,
	186	sizeof(cap->card));
	187	sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
	188	cap->version = SAA7134_VERSION_CODE;
	189	cap->capabilities =
	190	V4L2_CAP_VIDEO_CAPTURE \|
	191	V4L2_CAP_READWRITE \|
	192	V4L2_CAP_STREAMING;
	193	return 0;
	194	}
	195
	196	/* --- input switching --------------------------------------- */
	197	case VIDIOC_ENUMINPUT:
	198	{
	199	struct v4l2_input *i = arg;
	200
	201	if (i->index != 0)
	202	return -EINVAL;
	203	i->type = V4L2_INPUT_TYPE_CAMERA;
	204	strcpy(i->name,"CCIR656");
	205	return 0;
	206	}
	207	case VIDIOC_G_INPUT:
	208	{
	209	int *i = arg;
	210	*i = 0;
	211	return 0;
	212	}
	213	case VIDIOC_S_INPUT:
	214	{
	215	int *i = arg;
	216
	217	if (*i != 0)
	218	return -EINVAL;
	219	return 0;
	220	}
	221	/* --- capture ioctls ---------------------------------------- */
	222
	223	case VIDIOC_ENUM_FMT:
	224	{
	225	struct v4l2_fmtdesc *f = arg;
	226	int index;
	227
	228	index = f->index;
	229	if (index != 0)
	230	return -EINVAL;
	231
	232	memset(f,0,sizeof(*f));
	233	f->index = index;
	234	strlcpy(f->description, "MPEG TS", sizeof(f->description));
	235	f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	236	f->pixelformat = V4L2_PIX_FMT_MPEG;
	237	return 0;
	238	}
	239
	240	case VIDIOC_G_FMT:
	241	{
	242	struct v4l2_format *f = arg;
	243
	244	memset(f,0,sizeof(*f));
	245	f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	246
0a4c9c93	247	saa7134_i2c_call_clients(dev, cmd, arg);
1da177e4 LT	248	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
	249	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
	250	return 0;
	251	}
	252
	253	case VIDIOC_S_FMT:
	254	{
	255	struct v4l2_format *f = arg;
	256
	257	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	258	return -EINVAL;
	259
0a4c9c93	260	saa7134_i2c_call_clients(dev, cmd, arg);
1da177e4 LT	261	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
	262	f->fmt.pix.sizeimage = TS_PACKET_SIZE* dev->ts.nr_packets;
	263	return 0;
	264	}
	265
	266	case VIDIOC_REQBUFS:
	267	return videobuf_reqbufs(&dev->empress_tsq,arg);
	268
	269	case VIDIOC_QUERYBUF:
	270	return videobuf_querybuf(&dev->empress_tsq,arg);
	271
	272	case VIDIOC_QBUF:
	273	return videobuf_qbuf(&dev->empress_tsq,arg);
	274
	275	case VIDIOC_DQBUF:
	276	return videobuf_dqbuf(&dev->empress_tsq,arg,
	277	file->f_flags & O_NONBLOCK);
	278
	279	case VIDIOC_STREAMON:
	280	return videobuf_streamon(&dev->empress_tsq);
	281
	282	case VIDIOC_STREAMOFF:
	283	return videobuf_streamoff(&dev->empress_tsq);
	284
	285	case VIDIOC_QUERYCTRL:
	286	case VIDIOC_G_CTRL:
	287	case VIDIOC_S_CTRL:
	288	return saa7134_common_ioctl(dev, cmd, arg);
	289
	290	case VIDIOC_S_MPEGCOMP:
f81cf753 HV	291	printk(KERN_WARNING "VIDIOC_S_MPEGCOMP is obsolete. "
f81cf753 HV	292	"Replace with VIDIOC_S_EXT_CTRLS!");
1da177e4 LT	293	saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg);
	294	ts_init_encoder(dev);
	295	return 0;
	296	case VIDIOC_G_MPEGCOMP:
f81cf753 HV	297	printk(KERN_WARNING "VIDIOC_G_MPEGCOMP is obsolete. "
f81cf753 HV	298	"Replace with VIDIOC_G_EXT_CTRLS!");
1da177e4 LT	299	saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg);
1da177e4 LT	300	return 0;
86b79d66 HV	301	case VIDIOC_S_EXT_CTRLS:
	302	/* count == 0 is abused in saa6752hs.c, so that special
	303	case is handled here explicitly. */
	304	if (ctrls->count == 0)
	305	return 0;
	306	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	307	return -EINVAL;
	308	saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, arg);
	309	ts_init_encoder(dev);
	310	return 0;
	311	case VIDIOC_G_EXT_CTRLS:
	312	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	313	return -EINVAL;
	314	saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, arg);
	315	return 0;
1da177e4 LT	316
	317	default:
	318	return -ENOIOCTLCMD;
	319	}
	320	return 0;
	321	}
	322
	323	static int ts_ioctl(struct inode inode, struct file file,
	324	unsigned int cmd, unsigned long arg)
	325	{
	326	return video_usercopy(inode, file, cmd, arg, ts_do_ioctl);
	327	}
	328
fa027c2a	329	static const struct file_operations ts_fops =
1da177e4 LT	330	{
	331	.owner = THIS_MODULE,
	332	.open = ts_open,
	333	.release = ts_release,
	334	.read = ts_read,
	335	.poll = ts_poll,
	336	.mmap = ts_mmap,
	337	.ioctl = ts_ioctl,
	338	.llseek = no_llseek,
	339	};
	340
	341	/* ----------------------------------------------------------- */
	342
	343	static struct video_device saa7134_empress_template =
	344	{
	345	.name = "saa7134-empress",
	346	.type = 0 /* FIXME */,
	347	.type2 = 0 /* FIXME */,
	348	.hardware = 0,
	349	.fops = &ts_fops,
	350	.minor = -1,
	351	};
	352
c4028958	353	static void empress_signal_update(struct work_struct *work)
1da177e4	354	{
c4028958 DH	355	struct saa7134_dev* dev =
c4028958 DH	356	container_of(work, struct saa7134_dev, empress_workqueue);
1da177e4 LT	357
	358	if (dev->nosignal) {
	359	dprintk("no video signal\n");
	360	ts_reset_encoder(dev);
	361	} else {
	362	dprintk("video signal acquired\n");
	363	if (dev->empress_users)
	364	ts_init_encoder(dev);
	365	}
	366	}
	367
	368	static void empress_signal_change(struct saa7134_dev *dev)
	369	{
	370	schedule_work(&dev->empress_workqueue);
	371	}
	372
	373
	374	static int empress_init(struct saa7134_dev *dev)
	375	{
	376	int err;
	377
	378	dprintk("%s: %s\n",dev->name,__FUNCTION__);
	379	dev->empress_dev = video_device_alloc();
	380	if (NULL == dev->empress_dev)
	381	return -ENOMEM;
	382	*(dev->empress_dev) = saa7134_empress_template;
	383	dev->empress_dev->dev = &dev->pci->dev;
	384	dev->empress_dev->release = video_device_release;
	385	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
	386	"%s empress (%s)", dev->name,
	387	saa7134_boards[dev->board].name);
	388
c4028958	389	INIT_WORK(&dev->empress_workqueue, empress_signal_update);
1da177e4 LT	390
	391	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
	392	empress_nr[dev->nr]);
	393	if (err < 0) {
	394	printk(KERN_INFO "%s: can't register video device\n",
	395	dev->name);
	396	video_device_release(dev->empress_dev);
	397	dev->empress_dev = NULL;
	398	return err;
	399	}
	400	printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
	401	dev->name,dev->empress_dev->minor & 0x1f);
	402
	403	videobuf_queue_init(&dev->empress_tsq, &saa7134_ts_qops,
	404	dev->pci, &dev->slock,
	405	V4L2_BUF_TYPE_VIDEO_CAPTURE,
	406	V4L2_FIELD_ALTERNATE,
	407	sizeof(struct saa7134_buf),
	408	dev);
	409
c4028958	410	empress_signal_update(&dev->empress_workqueue);
1da177e4 LT	411	return 0;
	412	}
	413
	414	static int empress_fini(struct saa7134_dev *dev)
	415	{
	416	dprintk("%s: %s\n",dev->name,__FUNCTION__);
	417
	418	if (NULL == dev->empress_dev)
	419	return 0;
	420	flush_scheduled_work();
	421	video_unregister_device(dev->empress_dev);
	422	dev->empress_dev = NULL;
	423	return 0;
	424	}
	425
	426	static struct saa7134_mpeg_ops empress_ops = {
	427	.type = SAA7134_MPEG_EMPRESS,
	428	.init = empress_init,
	429	.fini = empress_fini,
	430	.signal_change = empress_signal_change,
	431	};
	432
	433	static int __init empress_register(void)
	434	{
	435	return saa7134_ts_register(&empress_ops);
	436	}
	437
	438	static void __exit empress_unregister(void)
	439	{
	440	saa7134_ts_unregister(&empress_ops);
	441	}
	442
	443	module_init(empress_register);
	444	module_exit(empress_unregister);
	445
	446	/* ----------------------------------------------------------- */
	447	/*
	448	* Local variables:
	449	* c-basic-offset: 8
	450	* End:
	451	*/