[net-next-2.6.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/smp_lock.h>
#include <linux/delay.h>

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

#include <media/saa6752hs.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.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;
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)
{
	u32 leading_null_bytes = 0;

	/* If more cards start to need this, then this
	   should probably be added to the card definitions. */
	switch (dev->board) {
	case SAA7134_BOARD_BEHOLD_M6:
	case SAA7134_BOARD_BEHOLD_M63:
	case SAA7134_BOARD_BEHOLD_M6_EXTRA:
		leading_null_bytes = 1;
		break;
	}
	ts_reset_encoder(dev);
	saa_call_all(dev, core, init, leading_null_bytes);
	dev->empress_started = 1;
	return 0;
}

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

static int ts_open(struct file *file)
{
	struct video_device *vdev = video_devdata(file);
	struct saa7134_dev *dev = video_drvdata(file);
	int err;

	dprintk("open dev=%s\n", video_device_node_name(vdev));
	err = -EBUSY;
	if (!mutex_trylock(&dev->empress_tsq.vb_lock))
		goto done;
	if (atomic_read(&dev->empress_users))
		goto done_up;

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

	atomic_inc(&dev->empress_users);
	file->private_data = dev;
	err = 0;

done_up:
	mutex_unlock(&dev->empress_tsq.vb_lock);
done:
	unlock_kernel();
	return err;
}

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

	videobuf_stop(&dev->empress_tsq);
	videobuf_mmap_free(&dev->empress_tsq);

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

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

	atomic_dec(&dev->empress_users);

	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_dev *dev = file->private_data;

	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_vid_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_vid_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct saa7134_dev *dev = file->private_data;

	saa_call_all(dev, video, 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_vid_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct saa7134_dev *dev = file->private_data;

	saa_call_all(dev, video, 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_try_fmt_vid_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct saa7134_dev *dev = file->private_data;

	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_dev *dev = file->private_data;

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

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

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

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

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

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

	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_dev *dev = file->private_data;

	return videobuf_streamon(&dev->empress_tsq);
}

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

	return videobuf_streamoff(&dev->empress_tsq);
}

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

	/* 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;

	err = saa_call_empress(dev, core, s_ext_ctrls, ctrls);
	ts_init_encoder(dev);

	return err;
}

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

	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
		return -EINVAL;
	return saa_call_empress(dev, core, g_ext_ctrls, ctrls);
}

static int empress_g_ctrl(struct file *file, void *priv,
					struct v4l2_control *c)
{
	struct saa7134_dev *dev = file->private_data;

	return saa7134_g_ctrl_internal(dev, NULL, c);
}

static int empress_s_ctrl(struct file *file, void *priv,
					struct v4l2_control *c)
{
	struct saa7134_dev *dev = file->private_data;

	return saa7134_s_ctrl_internal(dev, NULL, c);
}

static int empress_queryctrl(struct file *file, void *priv,
					struct v4l2_queryctrl *c)
{
	/* Must be sorted from low to high control ID! */
	static const u32 user_ctrls[] = {
		V4L2_CID_USER_CLASS,
		V4L2_CID_BRIGHTNESS,
		V4L2_CID_CONTRAST,
		V4L2_CID_SATURATION,
		V4L2_CID_HUE,
		V4L2_CID_AUDIO_VOLUME,
		V4L2_CID_AUDIO_MUTE,
		V4L2_CID_HFLIP,
		0
	};

	/* Must be sorted from low to high control ID! */
	static const u32 mpeg_ctrls[] = {
		V4L2_CID_MPEG_CLASS,
		V4L2_CID_MPEG_STREAM_TYPE,
		V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
		V4L2_CID_MPEG_AUDIO_ENCODING,
		V4L2_CID_MPEG_AUDIO_L2_BITRATE,
		V4L2_CID_MPEG_VIDEO_ENCODING,
		V4L2_CID_MPEG_VIDEO_ASPECT,
		V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
		V4L2_CID_MPEG_VIDEO_BITRATE,
		V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
		0
	};
	static const u32 *ctrl_classes[] = {
		user_ctrls,
		mpeg_ctrls,
		NULL
	};
	struct saa7134_dev *dev = file->private_data;

	c->id = v4l2_ctrl_next(ctrl_classes, c->id);
	if (c->id == 0)
		return -EINVAL;
	if (c->id == V4L2_CID_USER_CLASS || c->id == V4L2_CID_MPEG_CLASS)
		return v4l2_ctrl_query_fill(c, 0, 0, 0, 0);
	if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
		return saa7134_queryctrl(file, priv, c);
	return saa_call_empress(dev, core, queryctrl, c);
}

static int empress_querymenu(struct file *file, void *priv,
					struct v4l2_querymenu *c)
{
	struct saa7134_dev *dev = file->private_data;

	if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
		return -EINVAL;
	return saa_call_empress(dev, core, querymenu, c);
}

static int empress_g_chip_ident(struct file *file, void *fh,
	       struct v4l2_dbg_chip_ident *chip)
{
	struct saa7134_dev *dev = file->private_data;

	chip->ident = V4L2_IDENT_NONE;
	chip->revision = 0;
	if (chip->match.type == V4L2_CHIP_MATCH_I2C_DRIVER &&
	    !strcmp(chip->match.name, "saa6752hs"))
		return saa_call_empress(dev, core, g_chip_ident, chip);
	if (chip->match.type == V4L2_CHIP_MATCH_I2C_ADDR)
		return saa_call_empress(dev, core, g_chip_ident, chip);
	return -EINVAL;
}

static int empress_s_std(struct file *file, void *priv, v4l2_std_id *id)
{
	struct saa7134_dev *dev = file->private_data;

	return saa7134_s_std_internal(dev, NULL, id);
}

static int empress_g_std(struct file *file, void *priv, v4l2_std_id *id)
{
	struct saa7134_dev *dev = file->private_data;

	*id = dev->tvnorm->id;
	return 0;
}

static const struct v4l2_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,
};

static const struct v4l2_ioctl_ops ts_ioctl_ops = {
	.vidioc_querycap		= empress_querycap,
	.vidioc_enum_fmt_vid_cap	= empress_enum_fmt_vid_cap,
	.vidioc_try_fmt_vid_cap		= empress_try_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap		= empress_s_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap		= empress_g_fmt_vid_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		= empress_queryctrl,
	.vidioc_querymenu		= empress_querymenu,
	.vidioc_g_ctrl			= empress_g_ctrl,
	.vidioc_s_ctrl			= empress_s_ctrl,
	.vidioc_g_chip_ident 		= empress_g_chip_ident,
	.vidioc_s_std			= empress_s_std,
	.vidioc_g_std			= empress_g_std,
};

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

static struct video_device saa7134_empress_template = {
	.name          = "saa7134-empress",
	.fops          = &ts_fops,
	.minor	       = -1,
	.ioctl_ops     = &ts_ioctl_ops,

	.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");
	} else {
		dprintk("video signal acquired\n");
	}
}

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,__func__);
	dev->empress_dev = video_device_alloc();
	if (NULL == dev->empress_dev)
		return -ENOMEM;
	*(dev->empress_dev) = saa7134_empress_template;
	dev->empress_dev->parent  = &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);

	video_set_drvdata(dev->empress_dev, 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 %s [mpeg]\n",
	       dev->name, video_device_node_name(dev->empress_dev));

	videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
			    &dev->pci->dev, &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,__func__);

	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>
1da177e4 LT	24	#include <linux/slab.h>
405f5571	25	#include <linux/smp_lock.h>
1da177e4 LT	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>
e281db58	33	#include <media/v4l2-chip-ident.h>
1da177e4 LT	34
	35	/* ------------------------------------------------------------------ */
	36
	37	MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
	38	MODULE_LICENSE("GPL");
	39
	40	static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
674434c6	41
1da177e4 LT	42	module_param_array(empress_nr, int, NULL, 0444);
	43	MODULE_PARM_DESC(empress_nr,"ts device number");
	44
ff699e6b	45	static unsigned int debug;
1da177e4 LT	46	module_param(debug, int, 0644);
	47	MODULE_PARM_DESC(debug,"enable debug messages");
	48
	49	#define dprintk(fmt, arg...) if (debug) \
	50	printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
	51
	52	/* ------------------------------------------------------------------ */
	53
	54	static void ts_reset_encoder(struct saa7134_dev* dev)
	55	{
	56	if (!dev->empress_started)
	57	return;
	58
	59	saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
	60	msleep(10);
4ac97914	61	saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
1da177e4 LT	62	msleep(100);
	63	dev->empress_started = 0;
	64	}
	65
	66	static int ts_init_encoder(struct saa7134_dev* dev)
	67	{
f03813e4	68	u32 leading_null_bytes = 0;
86b79d66	69
f03813e4 DB	70	/* If more cards start to need this, then this
	71	should probably be added to the card definitions. */
	72	switch (dev->board) {
	73	case SAA7134_BOARD_BEHOLD_M6:
	74	case SAA7134_BOARD_BEHOLD_M63:
	75	case SAA7134_BOARD_BEHOLD_M6_EXTRA:
	76	leading_null_bytes = 1;
	77	break;
	78	}
1da177e4	79	ts_reset_encoder(dev);
fac6986c	80	saa_call_all(dev, core, init, leading_null_bytes);
1da177e4	81	dev->empress_started = 1;
4ac97914	82	return 0;
1da177e4 LT	83	}
	84
	85	/* ------------------------------------------------------------------ */
	86
bec43661	87	static int ts_open(struct file *file)
1da177e4	88	{
50462eb0	89	struct video_device *vdev = video_devdata(file);
63b0d5ad	90	struct saa7134_dev *dev = video_drvdata(file);
1da177e4 LT	91	int err;
1da177e4 LT	92
50462eb0	93	dprintk("open dev=%s\n", video_device_node_name(vdev));
1da177e4	94	err = -EBUSY;
64f9477f	95	if (!mutex_trylock(&dev->empress_tsq.vb_lock))
1da177e4	96	goto done;
1052efe0	97	if (atomic_read(&dev->empress_users))
1da177e4 LT	98	goto done_up;
1da177e4 LT	99
b784e526 RB	100	/* Unmute audio */
	101	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
	102	saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
	103
1052efe0	104	atomic_inc(&dev->empress_users);
1da177e4 LT	105	file->private_data = dev;
	106	err = 0;
	107
	108	done_up:
64f9477f	109	mutex_unlock(&dev->empress_tsq.vb_lock);
1da177e4	110	done:
d56dc612	111	unlock_kernel();
1da177e4 LT	112	return err;
	113	}
	114
bec43661	115	static int ts_release(struct file *file)
1da177e4 LT	116	{
	117	struct saa7134_dev *dev = file->private_data;
	118
053fcb60	119	videobuf_stop(&dev->empress_tsq);
1da177e4	120	videobuf_mmap_free(&dev->empress_tsq);
1da177e4 LT	121
	122	/* stop the encoder */
	123	ts_reset_encoder(dev);
	124
b784e526 RB	125	/* Mute audio */
	126	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
	127	saa_readb(SAA7134_AUDIO_MUTE_CTRL) \| (1 << 6));
	128
1052efe0	129	atomic_dec(&dev->empress_users);
a1789873	130
1da177e4 LT	131	return 0;
	132	}
	133
	134	static ssize_t
	135	ts_read(struct file file, char __user data, size_t count, loff_t *ppos)
	136	{
	137	struct saa7134_dev *dev = file->private_data;
	138
	139	if (!dev->empress_started)
	140	ts_init_encoder(dev);
	141
	142	return videobuf_read_stream(&dev->empress_tsq,
	143	data, count, ppos, 0,
	144	file->f_flags & O_NONBLOCK);
	145	}
	146
	147	static unsigned int
	148	ts_poll(struct file file, struct poll_table_struct wait)
	149	{
	150	struct saa7134_dev *dev = file->private_data;
	151
	152	return videobuf_poll_stream(file, &dev->empress_tsq, wait);
	153	}
	154
	155
	156	static int
	157	ts_mmap(struct file file, struct vm_area_struct vma)
	158	{
	159	struct saa7134_dev *dev = file->private_data;
	160
	161	return videobuf_mmap_mapper(&dev->empress_tsq, vma);
	162	}
	163
	164	/*
	165	* This function is _not_ called directly, but from
	166	* video_generic_ioctl (and maybe others). userspace
	167	* copying is done already, arg is a kernel pointer.
	168	*/
2c10e8a8 MCC	169
	170	static int empress_querycap(struct file file, void priv,
	171	struct v4l2_capability *cap)
1da177e4	172	{
388748e6	173	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	174
	175	strcpy(cap->driver, "saa7134");
	176	strlcpy(cap->card, saa7134_boards[dev->board].name,
	177	sizeof(cap->card));
	178	sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
	179	cap->version = SAA7134_VERSION_CODE;
	180	cap->capabilities =
	181	V4L2_CAP_VIDEO_CAPTURE \|
	182	V4L2_CAP_READWRITE \|
	183	V4L2_CAP_STREAMING;
	184	return 0;
	185	}
1da177e4	186
2c10e8a8 MCC	187	static int empress_enum_input(struct file file, void priv,
	188	struct v4l2_input *i)
	189	{
	190	if (i->index != 0)
	191	return -EINVAL;
1da177e4	192
2c10e8a8 MCC	193	i->type = V4L2_INPUT_TYPE_CAMERA;
2c10e8a8 MCC	194	strcpy(i->name, "CCIR656");
1da177e4	195
2c10e8a8 MCC	196	return 0;
2c10e8a8 MCC	197	}
1da177e4	198
2c10e8a8 MCC	199	static int empress_g_input(struct file file, void priv, unsigned int *i)
	200	{
	201	*i = 0;
	202	return 0;
	203	}
1da177e4	204
2c10e8a8 MCC	205	static int empress_s_input(struct file file, void priv, unsigned int i)
	206	{
	207	if (i != 0)
	208	return -EINVAL;
1da177e4	209
2c10e8a8 MCC	210	return 0;
2c10e8a8 MCC	211	}
1da177e4	212
78b526a4	213	static int empress_enum_fmt_vid_cap(struct file file, void priv,
2c10e8a8 MCC	214	struct v4l2_fmtdesc *f)
	215	{
	216	if (f->index != 0)
	217	return -EINVAL;
1da177e4	218
2c10e8a8 MCC	219	strlcpy(f->description, "MPEG TS", sizeof(f->description));
2c10e8a8 MCC	220	f->pixelformat = V4L2_PIX_FMT_MPEG;
1da177e4	221
2c10e8a8 MCC	222	return 0;
2c10e8a8 MCC	223	}
1da177e4	224
78b526a4	225	static int empress_g_fmt_vid_cap(struct file file, void priv,
2c10e8a8 MCC	226	struct v4l2_format *f)
2c10e8a8 MCC	227	{
a14fe960	228	struct saa7134_dev *dev = file->private_data;
1da177e4	229
fac6986c	230	saa_call_all(dev, video, g_fmt, f);
1da177e4	231
2c10e8a8 MCC	232	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
2c10e8a8 MCC	233	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
1da177e4	234
2c10e8a8 MCC	235	return 0;
2c10e8a8 MCC	236	}
1da177e4	237
78b526a4	238	static int empress_s_fmt_vid_cap(struct file file, void priv,
2c10e8a8 MCC	239	struct v4l2_format *f)
2c10e8a8 MCC	240	{
a14fe960	241	struct saa7134_dev *dev = file->private_data;
1da177e4	242
fac6986c	243	saa_call_all(dev, video, s_fmt, f);
1da177e4	244
2c10e8a8 MCC	245	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
2c10e8a8 MCC	246	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
1da177e4	247
2c10e8a8 MCC	248	return 0;
	249	}
	250
6b6b7543 DB	251	static int empress_try_fmt_vid_cap(struct file file, void priv,
	252	struct v4l2_format *f)
	253	{
	254	struct saa7134_dev *dev = file->private_data;
	255
	256	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
	257	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
	258
	259	return 0;
	260	}
2c10e8a8 MCC	261
	262	static int empress_reqbufs(struct file file, void priv,
	263	struct v4l2_requestbuffers *p)
	264	{
a14fe960	265	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	266
	267	return videobuf_reqbufs(&dev->empress_tsq, p);
	268	}
	269
	270	static int empress_querybuf(struct file file, void priv,
	271	struct v4l2_buffer *b)
	272	{
a14fe960	273	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	274
	275	return videobuf_querybuf(&dev->empress_tsq, b);
	276	}
	277
	278	static int empress_qbuf(struct file file, void priv, struct v4l2_buffer *b)
	279	{
a14fe960	280	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	281
	282	return videobuf_qbuf(&dev->empress_tsq, b);
	283	}
	284
	285	static int empress_dqbuf(struct file file, void priv, struct v4l2_buffer *b)
	286	{
a14fe960	287	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	288
	289	return videobuf_dqbuf(&dev->empress_tsq, b,
	290	file->f_flags & O_NONBLOCK);
	291	}
	292
	293	static int empress_streamon(struct file file, void priv,
	294	enum v4l2_buf_type type)
	295	{
a14fe960	296	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	297
	298	return videobuf_streamon(&dev->empress_tsq);
	299	}
	300
	301	static int empress_streamoff(struct file file, void priv,
	302	enum v4l2_buf_type type)
	303	{
a14fe960	304	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	305
	306	return videobuf_streamoff(&dev->empress_tsq);
	307	}
	308
	309	static int empress_s_ext_ctrls(struct file file, void priv,
	310	struct v4l2_ext_controls *ctrls)
	311	{
a14fe960	312	struct saa7134_dev *dev = file->private_data;
8b53b39d	313	int err;
2c10e8a8 MCC	314
	315	/* count == 0 is abused in saa6752hs.c, so that special
	316	case is handled here explicitly. */
	317	if (ctrls->count == 0)
86b79d66	318	return 0;
1da177e4	319
2c10e8a8 MCC	320	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	321	return -EINVAL;
	322
fac6986c	323	err = saa_call_empress(dev, core, s_ext_ctrls, ctrls);
2c10e8a8 MCC	324	ts_init_encoder(dev);
2c10e8a8 MCC	325
8b53b39d	326	return err;
1da177e4 LT	327	}
1da177e4 LT	328
2c10e8a8 MCC	329	static int empress_g_ext_ctrls(struct file file, void priv,
2c10e8a8 MCC	330	struct v4l2_ext_controls *ctrls)
1da177e4	331	{
a14fe960	332	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	333
	334	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	335	return -EINVAL;
fac6986c	336	return saa_call_empress(dev, core, g_ext_ctrls, ctrls);
8b53b39d	337	}
2c10e8a8	338
531d83a3 HV	339	static int empress_g_ctrl(struct file file, void priv,
	340	struct v4l2_control *c)
	341	{
	342	struct saa7134_dev *dev = file->private_data;
	343
	344	return saa7134_g_ctrl_internal(dev, NULL, c);
	345	}
	346
	347	static int empress_s_ctrl(struct file file, void priv,
	348	struct v4l2_control *c)
	349	{
	350	struct saa7134_dev *dev = file->private_data;
	351
	352	return saa7134_s_ctrl_internal(dev, NULL, c);
	353	}
	354
8b53b39d HV	355	static int empress_queryctrl(struct file file, void priv,
	356	struct v4l2_queryctrl *c)
	357	{
2ba58894	358	/* Must be sorted from low to high control ID! */
8b53b39d HV	359	static const u32 user_ctrls[] = {
	360	V4L2_CID_USER_CLASS,
	361	V4L2_CID_BRIGHTNESS,
	362	V4L2_CID_CONTRAST,
	363	V4L2_CID_SATURATION,
	364	V4L2_CID_HUE,
	365	V4L2_CID_AUDIO_VOLUME,
	366	V4L2_CID_AUDIO_MUTE,
	367	V4L2_CID_HFLIP,
	368	0
	369	};
	370
2ba58894	371	/* Must be sorted from low to high control ID! */
8b53b39d HV	372	static const u32 mpeg_ctrls[] = {
	373	V4L2_CID_MPEG_CLASS,
	374	V4L2_CID_MPEG_STREAM_TYPE,
	375	V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
	376	V4L2_CID_MPEG_AUDIO_ENCODING,
	377	V4L2_CID_MPEG_AUDIO_L2_BITRATE,
	378	V4L2_CID_MPEG_VIDEO_ENCODING,
	379	V4L2_CID_MPEG_VIDEO_ASPECT,
	380	V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
	381	V4L2_CID_MPEG_VIDEO_BITRATE,
	382	V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
	383	0
	384	};
	385	static const u32 *ctrl_classes[] = {
	386	user_ctrls,
	387	mpeg_ctrls,
	388	NULL
	389	};
	390	struct saa7134_dev *dev = file->private_data;
	391
	392	c->id = v4l2_ctrl_next(ctrl_classes, c->id);
	393	if (c->id == 0)
	394	return -EINVAL;
	395	if (c->id == V4L2_CID_USER_CLASS \|\| c->id == V4L2_CID_MPEG_CLASS)
10afbef1	396	return v4l2_ctrl_query_fill(c, 0, 0, 0, 0);
8b53b39d HV	397	if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
8b53b39d HV	398	return saa7134_queryctrl(file, priv, c);
fac6986c	399	return saa_call_empress(dev, core, queryctrl, c);
8b53b39d HV	400	}
	401
	402	static int empress_querymenu(struct file file, void priv,
	403	struct v4l2_querymenu *c)
	404	{
	405	struct saa7134_dev *dev = file->private_data;
	406
	407	if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
	408	return -EINVAL;
fac6986c	409	return saa_call_empress(dev, core, querymenu, c);
1da177e4 LT	410	}
1da177e4 LT	411
e281db58	412	static int empress_g_chip_ident(struct file file, void fh,
aecde8b5	413	struct v4l2_dbg_chip_ident *chip)
e281db58 HV	414	{
	415	struct saa7134_dev *dev = file->private_data;
	416
	417	chip->ident = V4L2_IDENT_NONE;
	418	chip->revision = 0;
aecde8b5 HV	419	if (chip->match.type == V4L2_CHIP_MATCH_I2C_DRIVER &&
aecde8b5 HV	420	!strcmp(chip->match.name, "saa6752hs"))
fac6986c	421	return saa_call_empress(dev, core, g_chip_ident, chip);
195784b8	422	if (chip->match.type == V4L2_CHIP_MATCH_I2C_ADDR)
fac6986c	423	return saa_call_empress(dev, core, g_chip_ident, chip);
e281db58 HV	424	return -EINVAL;
	425	}
	426
9afb7377 HV	427	static int empress_s_std(struct file file, void priv, v4l2_std_id *id)
	428	{
	429	struct saa7134_dev *dev = file->private_data;
	430
	431	return saa7134_s_std_internal(dev, NULL, id);
	432	}
	433
	434	static int empress_g_std(struct file file, void priv, v4l2_std_id *id)
	435	{
	436	struct saa7134_dev *dev = file->private_data;
	437
	438	*id = dev->tvnorm->id;
	439	return 0;
	440	}
e281db58	441
bec43661	442	static const struct v4l2_file_operations ts_fops =
1da177e4 LT	443	{
	444	.owner = THIS_MODULE,
	445	.open = ts_open,
	446	.release = ts_release,
	447	.read = ts_read,
	448	.poll = ts_poll,
	449	.mmap = ts_mmap,
2c10e8a8	450	.ioctl = video_ioctl2,
1da177e4 LT	451	};
1da177e4 LT	452
a399810c	453	static const struct v4l2_ioctl_ops ts_ioctl_ops = {
2c10e8a8	454	.vidioc_querycap = empress_querycap,
78b526a4	455	.vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
6b6b7543	456	.vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,
78b526a4 HV	457	.vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
78b526a4 HV	458	.vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
2c10e8a8 MCC	459	.vidioc_reqbufs = empress_reqbufs,
	460	.vidioc_querybuf = empress_querybuf,
	461	.vidioc_qbuf = empress_qbuf,
	462	.vidioc_dqbuf = empress_dqbuf,
	463	.vidioc_streamon = empress_streamon,
	464	.vidioc_streamoff = empress_streamoff,
	465	.vidioc_s_ext_ctrls = empress_s_ext_ctrls,
	466	.vidioc_g_ext_ctrls = empress_g_ext_ctrls,
	467	.vidioc_enum_input = empress_enum_input,
	468	.vidioc_g_input = empress_g_input,
	469	.vidioc_s_input = empress_s_input,
8b53b39d HV	470	.vidioc_queryctrl = empress_queryctrl,
8b53b39d HV	471	.vidioc_querymenu = empress_querymenu,
531d83a3 HV	472	.vidioc_g_ctrl = empress_g_ctrl,
531d83a3 HV	473	.vidioc_s_ctrl = empress_s_ctrl,
e281db58	474	.vidioc_g_chip_ident = empress_g_chip_ident,
9afb7377 HV	475	.vidioc_s_std = empress_s_std,
9afb7377 HV	476	.vidioc_g_std = empress_g_std,
a399810c HV	477	};
	478
	479	/* ----------------------------------------------------------- */
	480
	481	static struct video_device saa7134_empress_template = {
	482	.name = "saa7134-empress",
a399810c HV	483	.fops = &ts_fops,
	484	.minor = -1,
	485	.ioctl_ops = &ts_ioctl_ops,
2c10e8a8 MCC	486
	487	.tvnorms = SAA7134_NORMS,
	488	.current_norm = V4L2_STD_PAL,
1da177e4 LT	489	};
1da177e4 LT	490
c4028958	491	static void empress_signal_update(struct work_struct *work)
1da177e4	492	{
c4028958 DH	493	struct saa7134_dev* dev =
c4028958 DH	494	container_of(work, struct saa7134_dev, empress_workqueue);
1da177e4 LT	495
	496	if (dev->nosignal) {
	497	dprintk("no video signal\n");
1da177e4 LT	498	} else {
1da177e4 LT	499	dprintk("video signal acquired\n");
1da177e4 LT	500	}
	501	}
	502
	503	static void empress_signal_change(struct saa7134_dev *dev)
	504	{
	505	schedule_work(&dev->empress_workqueue);
	506	}
	507
	508
	509	static int empress_init(struct saa7134_dev *dev)
	510	{
	511	int err;
	512
5016381c	513	dprintk("%s: %s\n",dev->name,__func__);
1da177e4 LT	514	dev->empress_dev = video_device_alloc();
	515	if (NULL == dev->empress_dev)
	516	return -ENOMEM;
	517	*(dev->empress_dev) = saa7134_empress_template;
5e85e732	518	dev->empress_dev->parent = &dev->pci->dev;
1da177e4 LT	519	dev->empress_dev->release = video_device_release;
	520	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
	521	"%s empress (%s)", dev->name,
	522	saa7134_boards[dev->board].name);
	523
c4028958	524	INIT_WORK(&dev->empress_workqueue, empress_signal_update);
1da177e4	525
63b0d5ad	526	video_set_drvdata(dev->empress_dev, dev);
1da177e4 LT	527	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
	528	empress_nr[dev->nr]);
	529	if (err < 0) {
	530	printk(KERN_INFO "%s: can't register video device\n",
	531	dev->name);
	532	video_device_release(dev->empress_dev);
	533	dev->empress_dev = NULL;
	534	return err;
	535	}
38c7c036 LP	536	printk(KERN_INFO "%s: registered device %s [mpeg]\n",
38c7c036 LP	537	dev->name, video_device_node_name(dev->empress_dev));
1da177e4	538
0705135e GL	539	videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
0705135e GL	540	&dev->pci->dev, &dev->slock,
1da177e4 LT	541	V4L2_BUF_TYPE_VIDEO_CAPTURE,
	542	V4L2_FIELD_ALTERNATE,
	543	sizeof(struct saa7134_buf),
	544	dev);
	545
c4028958	546	empress_signal_update(&dev->empress_workqueue);
1da177e4 LT	547	return 0;
	548	}
	549
	550	static int empress_fini(struct saa7134_dev *dev)
	551	{
5016381c	552	dprintk("%s: %s\n",dev->name,__func__);
1da177e4 LT	553
	554	if (NULL == dev->empress_dev)
	555	return 0;
	556	flush_scheduled_work();
	557	video_unregister_device(dev->empress_dev);
	558	dev->empress_dev = NULL;
	559	return 0;
	560	}
	561
	562	static struct saa7134_mpeg_ops empress_ops = {
	563	.type = SAA7134_MPEG_EMPRESS,
	564	.init = empress_init,
	565	.fini = empress_fini,
	566	.signal_change = empress_signal_change,
	567	};
	568
	569	static int __init empress_register(void)
	570	{
	571	return saa7134_ts_register(&empress_ops);
	572	}
	573
	574	static void __exit empress_unregister(void)
	575	{
	576	saa7134_ts_unregister(&empress_ops);
	577	}
	578
	579	module_init(empress_register);
	580	module_exit(empress_unregister);
	581
	582	/* ----------------------------------------------------------- */
	583	/*
	584	* Local variables:
	585	* c-basic-offset: 8
	586	* End:
	587	*/