[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/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))
		return err;
	if (atomic_read(&dev->empress_users))
		goto done;

	/* 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:
	mutex_unlock(&dev->empress_tsq.vb_lock);
	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;
	struct v4l2_mbus_framefmt mbus_fmt;

	saa_call_all(dev, video, g_mbus_fmt, &mbus_fmt);

	v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
	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;
	struct v4l2_mbus_framefmt mbus_fmt;

	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
	saa_call_all(dev, video, s_mbus_fmt, &mbus_fmt);
	v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);

	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,
	.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	23	#include <linux/kernel.h>
405f5571	24	#include <linux/smp_lock.h>
1da177e4 LT	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>
e281db58	32	#include <media/v4l2-chip-ident.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
ff699e6b	44	static unsigned int debug;
1da177e4 LT	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	{
f03813e4	67	u32 leading_null_bytes = 0;
86b79d66	68
f03813e4 DB	69	/* If more cards start to need this, then this
	70	should probably be added to the card definitions. */
	71	switch (dev->board) {
	72	case SAA7134_BOARD_BEHOLD_M6:
	73	case SAA7134_BOARD_BEHOLD_M63:
	74	case SAA7134_BOARD_BEHOLD_M6_EXTRA:
	75	leading_null_bytes = 1;
	76	break;
	77	}
1da177e4	78	ts_reset_encoder(dev);
fac6986c	79	saa_call_all(dev, core, init, leading_null_bytes);
1da177e4	80	dev->empress_started = 1;
4ac97914	81	return 0;
1da177e4 LT	82	}
	83
	84	/* ------------------------------------------------------------------ */
	85
bec43661	86	static int ts_open(struct file *file)
1da177e4	87	{
50462eb0	88	struct video_device *vdev = video_devdata(file);
63b0d5ad	89	struct saa7134_dev *dev = video_drvdata(file);
1da177e4 LT	90	int err;
1da177e4 LT	91
50462eb0	92	dprintk("open dev=%s\n", video_device_node_name(vdev));
1da177e4	93	err = -EBUSY;
64f9477f	94	if (!mutex_trylock(&dev->empress_tsq.vb_lock))
7415c760	95	return err;
1052efe0	96	if (atomic_read(&dev->empress_users))
7415c760	97	goto done;
1da177e4	98
b784e526 RB	99	/* Unmute audio */
	100	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
	101	saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
	102
1052efe0	103	atomic_inc(&dev->empress_users);
1da177e4 LT	104	file->private_data = dev;
	105	err = 0;
	106
1da177e4	107	done:
7415c760	108	mutex_unlock(&dev->empress_tsq.vb_lock);
1da177e4 LT	109	return err;
	110	}
	111
bec43661	112	static int ts_release(struct file *file)
1da177e4 LT	113	{
	114	struct saa7134_dev *dev = file->private_data;
	115
053fcb60	116	videobuf_stop(&dev->empress_tsq);
1da177e4	117	videobuf_mmap_free(&dev->empress_tsq);
1da177e4 LT	118
	119	/* stop the encoder */
	120	ts_reset_encoder(dev);
	121
b784e526 RB	122	/* Mute audio */
	123	saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
	124	saa_readb(SAA7134_AUDIO_MUTE_CTRL) \| (1 << 6));
	125
1052efe0	126	atomic_dec(&dev->empress_users);
a1789873	127
1da177e4 LT	128	return 0;
	129	}
	130
	131	static ssize_t
	132	ts_read(struct file file, char __user data, size_t count, loff_t *ppos)
	133	{
	134	struct saa7134_dev *dev = file->private_data;
	135
	136	if (!dev->empress_started)
	137	ts_init_encoder(dev);
	138
	139	return videobuf_read_stream(&dev->empress_tsq,
	140	data, count, ppos, 0,
	141	file->f_flags & O_NONBLOCK);
	142	}
	143
	144	static unsigned int
	145	ts_poll(struct file file, struct poll_table_struct wait)
	146	{
	147	struct saa7134_dev *dev = file->private_data;
	148
	149	return videobuf_poll_stream(file, &dev->empress_tsq, wait);
	150	}
	151
	152
	153	static int
	154	ts_mmap(struct file file, struct vm_area_struct vma)
	155	{
	156	struct saa7134_dev *dev = file->private_data;
	157
	158	return videobuf_mmap_mapper(&dev->empress_tsq, vma);
	159	}
	160
	161	/*
	162	* This function is _not_ called directly, but from
	163	* video_generic_ioctl (and maybe others). userspace
	164	* copying is done already, arg is a kernel pointer.
	165	*/
2c10e8a8 MCC	166
	167	static int empress_querycap(struct file file, void priv,
	168	struct v4l2_capability *cap)
1da177e4	169	{
388748e6	170	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	171
	172	strcpy(cap->driver, "saa7134");
	173	strlcpy(cap->card, saa7134_boards[dev->board].name,
	174	sizeof(cap->card));
	175	sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
	176	cap->version = SAA7134_VERSION_CODE;
	177	cap->capabilities =
	178	V4L2_CAP_VIDEO_CAPTURE \|
	179	V4L2_CAP_READWRITE \|
	180	V4L2_CAP_STREAMING;
	181	return 0;
	182	}
1da177e4	183
2c10e8a8 MCC	184	static int empress_enum_input(struct file file, void priv,
	185	struct v4l2_input *i)
	186	{
	187	if (i->index != 0)
	188	return -EINVAL;
1da177e4	189
2c10e8a8 MCC	190	i->type = V4L2_INPUT_TYPE_CAMERA;
2c10e8a8 MCC	191	strcpy(i->name, "CCIR656");
1da177e4	192
2c10e8a8 MCC	193	return 0;
2c10e8a8 MCC	194	}
1da177e4	195
2c10e8a8 MCC	196	static int empress_g_input(struct file file, void priv, unsigned int *i)
	197	{
	198	*i = 0;
	199	return 0;
	200	}
1da177e4	201
2c10e8a8 MCC	202	static int empress_s_input(struct file file, void priv, unsigned int i)
	203	{
	204	if (i != 0)
	205	return -EINVAL;
1da177e4	206
2c10e8a8 MCC	207	return 0;
2c10e8a8 MCC	208	}
1da177e4	209
78b526a4	210	static int empress_enum_fmt_vid_cap(struct file file, void priv,
2c10e8a8 MCC	211	struct v4l2_fmtdesc *f)
	212	{
	213	if (f->index != 0)
	214	return -EINVAL;
1da177e4	215
2c10e8a8 MCC	216	strlcpy(f->description, "MPEG TS", sizeof(f->description));
2c10e8a8 MCC	217	f->pixelformat = V4L2_PIX_FMT_MPEG;
1da177e4	218
2c10e8a8 MCC	219	return 0;
2c10e8a8 MCC	220	}
1da177e4	221
78b526a4	222	static int empress_g_fmt_vid_cap(struct file file, void priv,
2c10e8a8 MCC	223	struct v4l2_format *f)
2c10e8a8 MCC	224	{
a14fe960	225	struct saa7134_dev *dev = file->private_data;
31bf95fb	226	struct v4l2_mbus_framefmt mbus_fmt;
1da177e4	227
31bf95fb	228	saa_call_all(dev, video, g_mbus_fmt, &mbus_fmt);
1da177e4	229
31bf95fb	230	v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
2c10e8a8 MCC	231	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
2c10e8a8 MCC	232	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
1da177e4	233
2c10e8a8 MCC	234	return 0;
2c10e8a8 MCC	235	}
1da177e4	236
78b526a4	237	static int empress_s_fmt_vid_cap(struct file file, void priv,
2c10e8a8 MCC	238	struct v4l2_format *f)
2c10e8a8 MCC	239	{
a14fe960	240	struct saa7134_dev *dev = file->private_data;
31bf95fb	241	struct v4l2_mbus_framefmt mbus_fmt;
1da177e4	242
31bf95fb HV	243	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
	244	saa_call_all(dev, video, s_mbus_fmt, &mbus_fmt);
	245	v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
1da177e4	246
2c10e8a8 MCC	247	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
2c10e8a8 MCC	248	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
1da177e4	249
2c10e8a8 MCC	250	return 0;
	251	}
	252
6b6b7543 DB	253	static int empress_try_fmt_vid_cap(struct file file, void priv,
	254	struct v4l2_format *f)
	255	{
	256	struct saa7134_dev *dev = file->private_data;
	257
	258	f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
	259	f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
	260
	261	return 0;
	262	}
2c10e8a8 MCC	263
	264	static int empress_reqbufs(struct file file, void priv,
	265	struct v4l2_requestbuffers *p)
	266	{
a14fe960	267	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	268
	269	return videobuf_reqbufs(&dev->empress_tsq, p);
	270	}
	271
	272	static int empress_querybuf(struct file file, void priv,
	273	struct v4l2_buffer *b)
	274	{
a14fe960	275	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	276
	277	return videobuf_querybuf(&dev->empress_tsq, b);
	278	}
	279
	280	static int empress_qbuf(struct file file, void priv, struct v4l2_buffer *b)
	281	{
a14fe960	282	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	283
	284	return videobuf_qbuf(&dev->empress_tsq, b);
	285	}
	286
	287	static int empress_dqbuf(struct file file, void priv, struct v4l2_buffer *b)
	288	{
a14fe960	289	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	290
	291	return videobuf_dqbuf(&dev->empress_tsq, b,
	292	file->f_flags & O_NONBLOCK);
	293	}
	294
	295	static int empress_streamon(struct file file, void priv,
	296	enum v4l2_buf_type type)
	297	{
a14fe960	298	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	299
	300	return videobuf_streamon(&dev->empress_tsq);
	301	}
	302
	303	static int empress_streamoff(struct file file, void priv,
	304	enum v4l2_buf_type type)
	305	{
a14fe960	306	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	307
	308	return videobuf_streamoff(&dev->empress_tsq);
	309	}
	310
	311	static int empress_s_ext_ctrls(struct file file, void priv,
	312	struct v4l2_ext_controls *ctrls)
	313	{
a14fe960	314	struct saa7134_dev *dev = file->private_data;
8b53b39d	315	int err;
2c10e8a8 MCC	316
	317	/* count == 0 is abused in saa6752hs.c, so that special
	318	case is handled here explicitly. */
	319	if (ctrls->count == 0)
86b79d66	320	return 0;
1da177e4	321
2c10e8a8 MCC	322	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	323	return -EINVAL;
	324
fac6986c	325	err = saa_call_empress(dev, core, s_ext_ctrls, ctrls);
2c10e8a8 MCC	326	ts_init_encoder(dev);
2c10e8a8 MCC	327
8b53b39d	328	return err;
1da177e4 LT	329	}
1da177e4 LT	330
2c10e8a8 MCC	331	static int empress_g_ext_ctrls(struct file file, void priv,
2c10e8a8 MCC	332	struct v4l2_ext_controls *ctrls)
1da177e4	333	{
a14fe960	334	struct saa7134_dev *dev = file->private_data;
2c10e8a8 MCC	335
	336	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
	337	return -EINVAL;
fac6986c	338	return saa_call_empress(dev, core, g_ext_ctrls, ctrls);
8b53b39d	339	}
2c10e8a8	340
531d83a3 HV	341	static int empress_g_ctrl(struct file file, void priv,
	342	struct v4l2_control *c)
	343	{
	344	struct saa7134_dev *dev = file->private_data;
	345
	346	return saa7134_g_ctrl_internal(dev, NULL, c);
	347	}
	348
	349	static int empress_s_ctrl(struct file file, void priv,
	350	struct v4l2_control *c)
	351	{
	352	struct saa7134_dev *dev = file->private_data;
	353
	354	return saa7134_s_ctrl_internal(dev, NULL, c);
	355	}
	356
8b53b39d HV	357	static int empress_queryctrl(struct file file, void priv,
	358	struct v4l2_queryctrl *c)
	359	{
2ba58894	360	/* Must be sorted from low to high control ID! */
8b53b39d HV	361	static const u32 user_ctrls[] = {
	362	V4L2_CID_USER_CLASS,
	363	V4L2_CID_BRIGHTNESS,
	364	V4L2_CID_CONTRAST,
	365	V4L2_CID_SATURATION,
	366	V4L2_CID_HUE,
	367	V4L2_CID_AUDIO_VOLUME,
	368	V4L2_CID_AUDIO_MUTE,
	369	V4L2_CID_HFLIP,
	370	0
	371	};
	372
2ba58894	373	/* Must be sorted from low to high control ID! */
8b53b39d HV	374	static const u32 mpeg_ctrls[] = {
	375	V4L2_CID_MPEG_CLASS,
	376	V4L2_CID_MPEG_STREAM_TYPE,
	377	V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
	378	V4L2_CID_MPEG_AUDIO_ENCODING,
	379	V4L2_CID_MPEG_AUDIO_L2_BITRATE,
	380	V4L2_CID_MPEG_VIDEO_ENCODING,
	381	V4L2_CID_MPEG_VIDEO_ASPECT,
	382	V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
	383	V4L2_CID_MPEG_VIDEO_BITRATE,
	384	V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
	385	0
	386	};
	387	static const u32 *ctrl_classes[] = {
	388	user_ctrls,
	389	mpeg_ctrls,
	390	NULL
	391	};
	392	struct saa7134_dev *dev = file->private_data;
	393
	394	c->id = v4l2_ctrl_next(ctrl_classes, c->id);
	395	if (c->id == 0)
	396	return -EINVAL;
	397	if (c->id == V4L2_CID_USER_CLASS \|\| c->id == V4L2_CID_MPEG_CLASS)
10afbef1	398	return v4l2_ctrl_query_fill(c, 0, 0, 0, 0);
8b53b39d HV	399	if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
8b53b39d HV	400	return saa7134_queryctrl(file, priv, c);
fac6986c	401	return saa_call_empress(dev, core, queryctrl, c);
8b53b39d HV	402	}
	403
	404	static int empress_querymenu(struct file file, void priv,
	405	struct v4l2_querymenu *c)
	406	{
	407	struct saa7134_dev *dev = file->private_data;
	408
	409	if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
	410	return -EINVAL;
fac6986c	411	return saa_call_empress(dev, core, querymenu, c);
1da177e4 LT	412	}
1da177e4 LT	413
e281db58	414	static int empress_g_chip_ident(struct file file, void fh,
aecde8b5	415	struct v4l2_dbg_chip_ident *chip)
e281db58 HV	416	{
	417	struct saa7134_dev *dev = file->private_data;
	418
	419	chip->ident = V4L2_IDENT_NONE;
	420	chip->revision = 0;
aecde8b5 HV	421	if (chip->match.type == V4L2_CHIP_MATCH_I2C_DRIVER &&
aecde8b5 HV	422	!strcmp(chip->match.name, "saa6752hs"))
fac6986c	423	return saa_call_empress(dev, core, g_chip_ident, chip);
195784b8	424	if (chip->match.type == V4L2_CHIP_MATCH_I2C_ADDR)
fac6986c	425	return saa_call_empress(dev, core, g_chip_ident, chip);
e281db58 HV	426	return -EINVAL;
	427	}
	428
9afb7377 HV	429	static int empress_s_std(struct file file, void priv, v4l2_std_id *id)
	430	{
	431	struct saa7134_dev *dev = file->private_data;
	432
	433	return saa7134_s_std_internal(dev, NULL, id);
	434	}
	435
	436	static int empress_g_std(struct file file, void priv, v4l2_std_id *id)
	437	{
	438	struct saa7134_dev *dev = file->private_data;
	439
	440	*id = dev->tvnorm->id;
	441	return 0;
	442	}
e281db58	443
bec43661	444	static const struct v4l2_file_operations ts_fops =
1da177e4 LT	445	{
	446	.owner = THIS_MODULE,
	447	.open = ts_open,
	448	.release = ts_release,
	449	.read = ts_read,
	450	.poll = ts_poll,
	451	.mmap = ts_mmap,
2c10e8a8	452	.ioctl = video_ioctl2,
1da177e4 LT	453	};
1da177e4 LT	454
a399810c	455	static const struct v4l2_ioctl_ops ts_ioctl_ops = {
2c10e8a8	456	.vidioc_querycap = empress_querycap,
78b526a4	457	.vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
6b6b7543	458	.vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,
78b526a4 HV	459	.vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
78b526a4 HV	460	.vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
2c10e8a8 MCC	461	.vidioc_reqbufs = empress_reqbufs,
	462	.vidioc_querybuf = empress_querybuf,
	463	.vidioc_qbuf = empress_qbuf,
	464	.vidioc_dqbuf = empress_dqbuf,
	465	.vidioc_streamon = empress_streamon,
	466	.vidioc_streamoff = empress_streamoff,
	467	.vidioc_s_ext_ctrls = empress_s_ext_ctrls,
	468	.vidioc_g_ext_ctrls = empress_g_ext_ctrls,
	469	.vidioc_enum_input = empress_enum_input,
	470	.vidioc_g_input = empress_g_input,
	471	.vidioc_s_input = empress_s_input,
8b53b39d HV	472	.vidioc_queryctrl = empress_queryctrl,
8b53b39d HV	473	.vidioc_querymenu = empress_querymenu,
531d83a3 HV	474	.vidioc_g_ctrl = empress_g_ctrl,
531d83a3 HV	475	.vidioc_s_ctrl = empress_s_ctrl,
e281db58	476	.vidioc_g_chip_ident = empress_g_chip_ident,
9afb7377 HV	477	.vidioc_s_std = empress_s_std,
9afb7377 HV	478	.vidioc_g_std = empress_g_std,
a399810c HV	479	};
	480
	481	/* ----------------------------------------------------------- */
	482
	483	static struct video_device saa7134_empress_template = {
	484	.name = "saa7134-empress",
a399810c	485	.fops = &ts_fops,
a399810c	486	.ioctl_ops = &ts_ioctl_ops,
2c10e8a8 MCC	487
	488	.tvnorms = SAA7134_NORMS,
	489	.current_norm = V4L2_STD_PAL,
1da177e4 LT	490	};
1da177e4 LT	491
c4028958	492	static void empress_signal_update(struct work_struct *work)
1da177e4	493	{
c4028958 DH	494	struct saa7134_dev* dev =
c4028958 DH	495	container_of(work, struct saa7134_dev, empress_workqueue);
1da177e4 LT	496
	497	if (dev->nosignal) {
	498	dprintk("no video signal\n");
1da177e4 LT	499	} else {
1da177e4 LT	500	dprintk("video signal acquired\n");
1da177e4 LT	501	}
	502	}
	503
	504	static void empress_signal_change(struct saa7134_dev *dev)
	505	{
	506	schedule_work(&dev->empress_workqueue);
	507	}
	508
	509
	510	static int empress_init(struct saa7134_dev *dev)
	511	{
	512	int err;
	513
5016381c	514	dprintk("%s: %s\n",dev->name,__func__);
1da177e4 LT	515	dev->empress_dev = video_device_alloc();
	516	if (NULL == dev->empress_dev)
	517	return -ENOMEM;
	518	*(dev->empress_dev) = saa7134_empress_template;
5e85e732	519	dev->empress_dev->parent = &dev->pci->dev;
1da177e4 LT	520	dev->empress_dev->release = video_device_release;
	521	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
	522	"%s empress (%s)", dev->name,
	523	saa7134_boards[dev->board].name);
	524
c4028958	525	INIT_WORK(&dev->empress_workqueue, empress_signal_update);
1da177e4	526
63b0d5ad	527	video_set_drvdata(dev->empress_dev, dev);
1da177e4 LT	528	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
	529	empress_nr[dev->nr]);
	530	if (err < 0) {
	531	printk(KERN_INFO "%s: can't register video device\n",
	532	dev->name);
	533	video_device_release(dev->empress_dev);
	534	dev->empress_dev = NULL;
	535	return err;
	536	}
38c7c036 LP	537	printk(KERN_INFO "%s: registered device %s [mpeg]\n",
38c7c036 LP	538	dev->name, video_device_node_name(dev->empress_dev));
1da177e4	539
0705135e GL	540	videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
0705135e GL	541	&dev->pci->dev, &dev->slock,
1da177e4 LT	542	V4L2_BUF_TYPE_VIDEO_CAPTURE,
	543	V4L2_FIELD_ALTERNATE,
	544	sizeof(struct saa7134_buf),
	545	dev);
	546
c4028958	547	empress_signal_update(&dev->empress_workqueue);
1da177e4 LT	548	return 0;
	549	}
	550
	551	static int empress_fini(struct saa7134_dev *dev)
	552	{
5016381c	553	dprintk("%s: %s\n",dev->name,__func__);
1da177e4 LT	554
	555	if (NULL == dev->empress_dev)
	556	return 0;
	557	flush_scheduled_work();
	558	video_unregister_device(dev->empress_dev);
	559	dev->empress_dev = NULL;
	560	return 0;
	561	}
	562
	563	static struct saa7134_mpeg_ops empress_ops = {
	564	.type = SAA7134_MPEG_EMPRESS,
	565	.init = empress_init,
	566	.fini = empress_fini,
	567	.signal_change = empress_signal_change,
	568	};
	569
	570	static int __init empress_register(void)
	571	{
	572	return saa7134_ts_register(&empress_ops);
	573	}
	574
	575	static void __exit empress_unregister(void)
	576	{
	577	saa7134_ts_unregister(&empress_ops);
	578	}
	579
	580	module_init(empress_register);
	581	module_exit(empress_unregister);
	582
	583	/* ----------------------------------------------------------- */
	584	/*
	585	* Local variables:
	586	* c-basic-offset: 8
	587	* End:
	588	*/