[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/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 *dev;
	int err;

	list_for_each_entry(dev, &saa7134_devlist, devlist)
		if (dev->empress_dev && dev->empress_dev->minor == minor)
			goto found;
	return -ENODEV;
 found:

	dprintk("open minor=%d\n",minor);
	err = -EBUSY;
	if (!mutex_trylock(&dev->empress_tsq.vb_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.vb_lock);
done:
	return err;
}

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

	mutex_lock(&dev->empress_tsq.vb_lock);
	videobuf_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.vb_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 empress_querycap(struct file *file, void  *priv,
					struct v4l2_capability *cap)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	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;
}

static int empress_enum_input(struct file *file, void *priv,
					struct v4l2_input *i)
{
	if (i->index != 0)
		return -EINVAL;

	i->type = V4L2_INPUT_TYPE_CAMERA;
	strcpy(i->name, "CCIR656");

	return 0;
}

static int empress_g_input(struct file *file, void *priv, unsigned int *i)
{
	*i = 0;
	return 0;
}

static int empress_s_input(struct file *file, void *priv, unsigned int i)
{
	if (i != 0)
		return -EINVAL;

	return 0;
}

static int empress_enum_fmt_cap(struct file *file, void  *priv,
					struct v4l2_fmtdesc *f)
{
	if (f->index != 0)
		return -EINVAL;

	strlcpy(f->description, "MPEG TS", sizeof(f->description));
	f->pixelformat = V4L2_PIX_FMT_MPEG;

	return 0;
}

static int empress_g_fmt_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f);

	f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
	f->fmt.pix.sizeimage    = TS_PACKET_SIZE * dev->ts.nr_packets;

	return 0;
}

static int empress_s_fmt_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f);

	f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
	f->fmt.pix.sizeimage    = TS_PACKET_SIZE * dev->ts.nr_packets;

	return 0;
}


static int empress_reqbufs(struct file *file, void *priv,
					struct v4l2_requestbuffers *p)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	return videobuf_reqbufs(&dev->empress_tsq, p);
}

static int empress_querybuf(struct file *file, void *priv,
					struct v4l2_buffer *b)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	return videobuf_querybuf(&dev->empress_tsq, b);
}

static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	return videobuf_qbuf(&dev->empress_tsq, b);
}

static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	return videobuf_dqbuf(&dev->empress_tsq, b,
				file->f_flags & O_NONBLOCK);
}

static int empress_streamon(struct file *file, void *priv,
					enum v4l2_buf_type type)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	return videobuf_streamon(&dev->empress_tsq);
}

static int empress_streamoff(struct file *file, void *priv,
					enum v4l2_buf_type type)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	return videobuf_streamoff(&dev->empress_tsq);
}

static int empress_s_ext_ctrls(struct file *file, void *priv,
			       struct v4l2_ext_controls *ctrls)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	/* 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, ctrls);
	ts_init_encoder(dev);

	return 0;
}

static int empress_g_ext_ctrls(struct file *file, void *priv,
			       struct v4l2_ext_controls *ctrls)
{
	struct saa7134_fh *fh = priv;
	struct saa7134_dev *dev = fh->dev;

	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
		return -EINVAL;
	saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, ctrls);

	return 0;
}

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	  = video_ioctl2,
	.llseek   = no_llseek,
};

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

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

	.vidioc_querycap		= empress_querycap,
	.vidioc_enum_fmt_cap		= empress_enum_fmt_cap,
	.vidioc_s_fmt_cap		= empress_s_fmt_cap,
	.vidioc_g_fmt_cap		= empress_g_fmt_cap,
	.vidioc_reqbufs			= empress_reqbufs,
	.vidioc_querybuf		= empress_querybuf,
	.vidioc_qbuf			= empress_qbuf,
	.vidioc_dqbuf			= empress_dqbuf,
	.vidioc_streamon		= empress_streamon,
	.vidioc_streamoff		= empress_streamoff,
	.vidioc_s_ext_ctrls		= empress_s_ext_ctrls,
	.vidioc_g_ext_ctrls		= empress_g_ext_ctrls,
	.vidioc_enum_input		= empress_enum_input,
	.vidioc_g_input			= empress_g_input,
	.vidioc_s_input			= empress_s_input,

	.vidioc_queryctrl		= saa7134_queryctrl,
	.vidioc_g_ctrl			= saa7134_g_ctrl,
	.vidioc_s_ctrl			= saa7134_s_ctrl,

	.tvnorms			= SAA7134_NORMS,
	.current_norm			= V4L2_STD_PAL,
};

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_pci_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);
6d28e989	79	struct saa7134_dev *dev;
1da177e4 LT	80	int err;
1da177e4 LT	81
6d28e989 TP	82	list_for_each_entry(dev, &saa7134_devlist, devlist)
	83	if (dev->empress_dev && dev->empress_dev->minor == minor)
	84	goto found;
	85	return -ENODEV;
	86	found:
1da177e4 LT	87
	88	dprintk("open minor=%d\n",minor);
	89	err = -EBUSY;
64f9477f	90	if (!mutex_trylock(&dev->empress_tsq.vb_lock))
1da177e4 LT	91	goto done;
	92	if (dev->empress_users)
	93	goto done_up;
	94
b784e526 RB	95	/* Unmute audio */
	96	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
	97	saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
	98
1da177e4 LT	99	dev->empress_users++;
	100	file->private_data = dev;
	101	err = 0;
	102
	103	done_up:
64f9477f	104	mutex_unlock(&dev->empress_tsq.vb_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
64f9477f	113	mutex_lock(&dev->empress_tsq.vb_lock);
053fcb60	114	videobuf_stop(&dev->empress_tsq);
1da177e4 LT	115	videobuf_mmap_free(&dev->empress_tsq);
	116	dev->empress_users--;
	117
	118	/* stop the encoder */
	119	ts_reset_encoder(dev);
	120
b784e526 RB	121	/* Mute audio */
	122	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
	123	saa_readb(SAA7134_AUDIO_MUTE_CTRL) \| (1 << 6));
	124
64f9477f	125	mutex_unlock(&dev->empress_tsq.vb_lock);
1da177e4 LT	126	return 0;
	127	}
	128
	129	static ssize_t
	130	ts_read(struct file file, char __user data, size_t count, loff_t *ppos)
	131	{
	132	struct saa7134_dev *dev = file->private_data;
	133
	134	if (!dev->empress_started)
	135	ts_init_encoder(dev);
	136
	137	return videobuf_read_stream(&dev->empress_tsq,
	138	data, count, ppos, 0,
	139	file->f_flags & O_NONBLOCK);
	140	}
	141
	142	static unsigned int
	143	ts_poll(struct file file, struct poll_table_struct wait)
	144	{
	145	struct saa7134_dev *dev = file->private_data;
	146
	147	return videobuf_poll_stream(file, &dev->empress_tsq, wait);
	148	}
	149
	150
	151	static int
	152	ts_mmap(struct file file, struct vm_area_struct vma)
	153	{
	154	struct saa7134_dev *dev = file->private_data;
	155
	156	return videobuf_mmap_mapper(&dev->empress_tsq, vma);
	157	}
	158
	159	/*
	160	* This function is _not_ called directly, but from
	161	* video_generic_ioctl (and maybe others). userspace
	162	* copying is done already, arg is a kernel pointer.
	163	*/
2c10e8a8 MCC	164
	165	static int empress_querycap(struct file file, void priv,
	166	struct v4l2_capability *cap)
1da177e4	167	{
2c10e8a8 MCC	168	struct saa7134_fh *fh = priv;
	169	struct saa7134_dev *dev = fh->dev;
	170
	171	strcpy(cap->driver, "saa7134");
	172	strlcpy(cap->card, saa7134_boards[dev->board].name,
	173	sizeof(cap->card));
	174	sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
	175	cap->version = SAA7134_VERSION_CODE;
	176	cap->capabilities =
	177	V4L2_CAP_VIDEO_CAPTURE \|
	178	V4L2_CAP_READWRITE \|
	179	V4L2_CAP_STREAMING;
	180	return 0;
	181	}
1da177e4	182
2c10e8a8 MCC	183	static int empress_enum_input(struct file file, void priv,
	184	struct v4l2_input *i)
	185	{
	186	if (i->index != 0)
	187	return -EINVAL;
1da177e4	188
2c10e8a8 MCC	189	i->type = V4L2_INPUT_TYPE_CAMERA;
2c10e8a8 MCC	190	strcpy(i->name, "CCIR656");
1da177e4	191
2c10e8a8 MCC	192	return 0;
2c10e8a8 MCC	193	}
1da177e4	194
2c10e8a8 MCC	195	static int empress_g_input(struct file file, void priv, unsigned int *i)
	196	{
	197	*i = 0;
	198	return 0;
	199	}
1da177e4	200
2c10e8a8 MCC	201	static int empress_s_input(struct file file, void priv, unsigned int i)
	202	{
	203	if (i != 0)
	204	return -EINVAL;
1da177e4	205
2c10e8a8 MCC	206	return 0;
2c10e8a8 MCC	207	}
1da177e4	208
2c10e8a8 MCC	209	static int empress_enum_fmt_cap(struct file file, void priv,
	210	struct v4l2_fmtdesc *f)
	211	{
	212	if (f->index != 0)
	213	return -EINVAL;
1da177e4	214
2c10e8a8 MCC	215	strlcpy(f->description, "MPEG TS", sizeof(f->description));
2c10e8a8 MCC	216	f->pixelformat = V4L2_PIX_FMT_MPEG;
1da177e4	217
2c10e8a8 MCC	218	return 0;
2c10e8a8 MCC	219	}
1da177e4	220
2c10e8a8 MCC	221	static int empress_g_fmt_cap(struct file file, void priv,
	222	struct v4l2_format *f)
	223	{
	224	struct saa7134_fh *fh = priv;
	225	struct saa7134_dev *dev = fh->dev;
1da177e4	226
2c10e8a8	227	saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f);
1da177e4	228
2c10e8a8 MCC	229	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
2c10e8a8 MCC	230	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
1da177e4	231
2c10e8a8 MCC	232	return 0;
2c10e8a8 MCC	233	}
1da177e4	234
2c10e8a8 MCC	235	static int empress_s_fmt_cap(struct file file, void priv,
	236	struct v4l2_format *f)
	237	{
	238	struct saa7134_fh *fh = priv;
	239	struct saa7134_dev *dev = fh->dev;
1da177e4	240
2c10e8a8	241	saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f);
1da177e4	242
2c10e8a8 MCC	243	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
2c10e8a8 MCC	244	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
1da177e4	245
2c10e8a8 MCC	246	return 0;
	247	}
	248
	249
	250	static int empress_reqbufs(struct file file, void priv,
	251	struct v4l2_requestbuffers *p)
	252	{
	253	struct saa7134_fh *fh = priv;
	254	struct saa7134_dev *dev = fh->dev;
	255
	256	return videobuf_reqbufs(&dev->empress_tsq, p);
	257	}
	258
	259	static int empress_querybuf(struct file file, void priv,
	260	struct v4l2_buffer *b)
	261	{
	262	struct saa7134_fh *fh = priv;
	263	struct saa7134_dev *dev = fh->dev;
	264
	265	return videobuf_querybuf(&dev->empress_tsq, b);
	266	}
	267
	268	static int empress_qbuf(struct file file, void priv, struct v4l2_buffer *b)
	269	{
	270	struct saa7134_fh *fh = priv;
	271	struct saa7134_dev *dev = fh->dev;
	272
	273	return videobuf_qbuf(&dev->empress_tsq, b);
	274	}
	275
	276	static int empress_dqbuf(struct file file, void priv, struct v4l2_buffer *b)
	277	{
	278	struct saa7134_fh *fh = priv;
	279	struct saa7134_dev *dev = fh->dev;
	280
	281	return videobuf_dqbuf(&dev->empress_tsq, b,
	282	file->f_flags & O_NONBLOCK);
	283	}
	284
	285	static int empress_streamon(struct file file, void priv,
	286	enum v4l2_buf_type type)
	287	{
	288	struct saa7134_fh *fh = priv;
	289	struct saa7134_dev *dev = fh->dev;
	290
	291	return videobuf_streamon(&dev->empress_tsq);
	292	}
	293
	294	static int empress_streamoff(struct file file, void priv,
	295	enum v4l2_buf_type type)
	296	{
	297	struct saa7134_fh *fh = priv;
	298	struct saa7134_dev *dev = fh->dev;
	299
	300	return videobuf_streamoff(&dev->empress_tsq);
	301	}
	302
	303	static int empress_s_ext_ctrls(struct file file, void priv,
	304	struct v4l2_ext_controls *ctrls)
	305	{
	306	struct saa7134_fh *fh = priv;
	307	struct saa7134_dev *dev = fh->dev;
	308
	309	/* count == 0 is abused in saa6752hs.c, so that special
310	case is handled here explicitly. */
311	if (ctrls->count == 0)
86b79d66	312	return 0;
1da177e4	313
2c10e8a8 MCC	314	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	315	return -EINVAL;
	316
	317	saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, ctrls);
	318	ts_init_encoder(dev);
	319
1da177e4 LT	320	return 0;
	321	}
	322
2c10e8a8 MCC	323	static int empress_g_ext_ctrls(struct file file, void priv,
2c10e8a8 MCC	324	struct v4l2_ext_controls *ctrls)
1da177e4	325	{
2c10e8a8 MCC	326	struct saa7134_fh *fh = priv;
	327	struct saa7134_dev *dev = fh->dev;
	328
	329	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	330	return -EINVAL;
	331	saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, ctrls);
	332
	333	return 0;
1da177e4 LT	334	}
1da177e4 LT	335
fa027c2a	336	static const struct file_operations ts_fops =
1da177e4 LT	337	{
	338	.owner = THIS_MODULE,
	339	.open = ts_open,
	340	.release = ts_release,
	341	.read = ts_read,
	342	.poll = ts_poll,
	343	.mmap = ts_mmap,
2c10e8a8	344	.ioctl = video_ioctl2,
1da177e4 LT	345	.llseek = no_llseek,
	346	};
	347
	348	/* ----------------------------------------------------------- */
	349
	350	static struct video_device saa7134_empress_template =
	351	{
	352	.name = "saa7134-empress",
	353	.type = 0 /* FIXME */,
	354	.type2 = 0 /* FIXME */,
1da177e4 LT	355	.fops = &ts_fops,
1da177e4 LT	356	.minor = -1,
2c10e8a8 MCC	357
	358	.vidioc_querycap = empress_querycap,
	359	.vidioc_enum_fmt_cap = empress_enum_fmt_cap,
	360	.vidioc_s_fmt_cap = empress_s_fmt_cap,
	361	.vidioc_g_fmt_cap = empress_g_fmt_cap,
	362	.vidioc_reqbufs = empress_reqbufs,
	363	.vidioc_querybuf = empress_querybuf,
	364	.vidioc_qbuf = empress_qbuf,
	365	.vidioc_dqbuf = empress_dqbuf,
	366	.vidioc_streamon = empress_streamon,
	367	.vidioc_streamoff = empress_streamoff,
	368	.vidioc_s_ext_ctrls = empress_s_ext_ctrls,
	369	.vidioc_g_ext_ctrls = empress_g_ext_ctrls,
	370	.vidioc_enum_input = empress_enum_input,
	371	.vidioc_g_input = empress_g_input,
	372	.vidioc_s_input = empress_s_input,
	373
	374	.vidioc_queryctrl = saa7134_queryctrl,
	375	.vidioc_g_ctrl = saa7134_g_ctrl,
	376	.vidioc_s_ctrl = saa7134_s_ctrl,
	377
	378	.tvnorms = SAA7134_NORMS,
	379	.current_norm = V4L2_STD_PAL,
1da177e4 LT	380	};
1da177e4 LT	381
c4028958	382	static void empress_signal_update(struct work_struct *work)
1da177e4	383	{
c4028958 DH	384	struct saa7134_dev* dev =
c4028958 DH	385	container_of(work, struct saa7134_dev, empress_workqueue);
1da177e4 LT	386
	387	if (dev->nosignal) {
	388	dprintk("no video signal\n");
	389	ts_reset_encoder(dev);
	390	} else {
	391	dprintk("video signal acquired\n");
	392	if (dev->empress_users)
	393	ts_init_encoder(dev);
	394	}
	395	}
	396
	397	static void empress_signal_change(struct saa7134_dev *dev)
	398	{
	399	schedule_work(&dev->empress_workqueue);
	400	}
	401
	402
	403	static int empress_init(struct saa7134_dev *dev)
	404	{
	405	int err;
	406
	407	dprintk("%s: %s\n",dev->name,__FUNCTION__);
	408	dev->empress_dev = video_device_alloc();
	409	if (NULL == dev->empress_dev)
	410	return -ENOMEM;
	411	*(dev->empress_dev) = saa7134_empress_template;
	412	dev->empress_dev->dev = &dev->pci->dev;
	413	dev->empress_dev->release = video_device_release;
	414	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
	415	"%s empress (%s)", dev->name,
	416	saa7134_boards[dev->board].name);
	417
c4028958	418	INIT_WORK(&dev->empress_workqueue, empress_signal_update);
1da177e4 LT	419
	420	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
	421	empress_nr[dev->nr]);
	422	if (err < 0) {
	423	printk(KERN_INFO "%s: can't register video device\n",
	424	dev->name);
	425	video_device_release(dev->empress_dev);
	426	dev->empress_dev = NULL;
	427	return err;
	428	}
	429	printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
	430	dev->name,dev->empress_dev->minor & 0x1f);
	431
c1accaa2	432	videobuf_queue_pci_init(&dev->empress_tsq, &saa7134_ts_qops,
1da177e4 LT	433	dev->pci, &dev->slock,
	434	V4L2_BUF_TYPE_VIDEO_CAPTURE,
	435	V4L2_FIELD_ALTERNATE,
	436	sizeof(struct saa7134_buf),
	437	dev);
	438
c4028958	439	empress_signal_update(&dev->empress_workqueue);
1da177e4 LT	440	return 0;
	441	}
	442
	443	static int empress_fini(struct saa7134_dev *dev)
	444	{
	445	dprintk("%s: %s\n",dev->name,__FUNCTION__);
	446
	447	if (NULL == dev->empress_dev)
	448	return 0;
	449	flush_scheduled_work();
	450	video_unregister_device(dev->empress_dev);
	451	dev->empress_dev = NULL;
	452	return 0;
	453	}
	454
	455	static struct saa7134_mpeg_ops empress_ops = {
	456	.type = SAA7134_MPEG_EMPRESS,
	457	.init = empress_init,
	458	.fini = empress_fini,
	459	.signal_change = empress_signal_change,
	460	};
	461
	462	static int __init empress_register(void)
	463	{
	464	return saa7134_ts_register(&empress_ops);
	465	}
	466
	467	static void __exit empress_unregister(void)
	468	{
	469	saa7134_ts_unregister(&empress_ops);
	470	}
	471
	472	module_init(empress_register);
	473	module_exit(empress_unregister);
	474
	475	/* ----------------------------------------------------------- */
	476	/*
	477	* Local variables:
	478	* c-basic-offset: 8
	479	* End:
	480	*/