[deliverable/linux.git] / drivers / media / common / saa7146_fops.c

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <media/saa7146_vv.h>
#include <linux/module.h>

/****************************************************************************/
/* resource management functions, shamelessly stolen from saa7134 driver */

int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit)
{
	struct saa7146_dev *dev = fh->dev;
	struct saa7146_vv *vv = dev->vv_data;

	if (fh->resources & bit) {
		DEB_D("already allocated! want: 0x%02x, cur:0x%02x\n",
		      bit, vv->resources);
		/* have it already allocated */
		return 1;
	}

	/* is it free? */
	if (vv->resources & bit) {
		DEB_D("locked! vv->resources:0x%02x, we want:0x%02x\n",
		      vv->resources, bit);
		/* no, someone else uses it */
		return 0;
	}
	/* it's free, grab it */
	fh->resources |= bit;
	vv->resources |= bit;
	DEB_D("res: get 0x%02x, cur:0x%02x\n", bit, vv->resources);
	return 1;
}

void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
{
	struct saa7146_dev *dev = fh->dev;
	struct saa7146_vv *vv = dev->vv_data;

	BUG_ON((fh->resources & bits) != bits);

	fh->resources &= ~bits;
	vv->resources &= ~bits;
	DEB_D("res: put 0x%02x, cur:0x%02x\n", bits, vv->resources);
}


/********************************************************************************/
/* common dma functions */

void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q,
						struct saa7146_buf *buf)
{
	struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
	DEB_EE("dev:%p, buf:%p\n", dev, buf);

	BUG_ON(in_interrupt());

	videobuf_waiton(q, &buf->vb, 0, 0);
	videobuf_dma_unmap(q->dev, dma);
	videobuf_dma_free(dma);
	buf->vb.state = VIDEOBUF_NEEDS_INIT;
}


/********************************************************************************/
/* common buffer functions */

int saa7146_buffer_queue(struct saa7146_dev *dev,
			 struct saa7146_dmaqueue *q,
			 struct saa7146_buf *buf)
{
	assert_spin_locked(&dev->slock);
	DEB_EE("dev:%p, dmaq:%p, buf:%p\n", dev, q, buf);

	BUG_ON(!q);

	if (NULL == q->curr) {
		q->curr = buf;
		DEB_D("immediately activating buffer %p\n", buf);
		buf->activate(dev,buf,NULL);
	} else {
		list_add_tail(&buf->vb.queue,&q->queue);
		buf->vb.state = VIDEOBUF_QUEUED;
		DEB_D("adding buffer %p to queue. (active buffer present)\n",
		      buf);
	}
	return 0;
}

void saa7146_buffer_finish(struct saa7146_dev *dev,
			   struct saa7146_dmaqueue *q,
			   int state)
{
	assert_spin_locked(&dev->slock);
	DEB_EE("dev:%p, dmaq:%p, state:%d\n", dev, q, state);
	DEB_EE("q->curr:%p\n", q->curr);

	BUG_ON(!q->curr);

	/* finish current buffer */
	if (NULL == q->curr) {
		DEB_D("aiii. no current buffer\n");
		return;
	}

	q->curr->vb.state = state;
	do_gettimeofday(&q->curr->vb.ts);
	wake_up(&q->curr->vb.done);

	q->curr = NULL;
}

void saa7146_buffer_next(struct saa7146_dev *dev,
			 struct saa7146_dmaqueue *q, int vbi)
{
	struct saa7146_buf *buf,*next = NULL;

	BUG_ON(!q);

	DEB_INT("dev:%p, dmaq:%p, vbi:%d\n", dev, q, vbi);

	assert_spin_locked(&dev->slock);
	if (!list_empty(&q->queue)) {
		/* activate next one from queue */
		buf = list_entry(q->queue.next,struct saa7146_buf,vb.queue);
		list_del(&buf->vb.queue);
		if (!list_empty(&q->queue))
			next = list_entry(q->queue.next,struct saa7146_buf, vb.queue);
		q->curr = buf;
		DEB_INT("next buffer: buf:%p, prev:%p, next:%p\n",
			buf, q->queue.prev, q->queue.next);
		buf->activate(dev,buf,next);
	} else {
		DEB_INT("no next buffer. stopping.\n");
		if( 0 != vbi ) {
			/* turn off video-dma3 */
			saa7146_write(dev,MC1, MASK_20);
		} else {
			/* nothing to do -- just prevent next video-dma1 transfer
			   by lowering the protection address */

			// fixme: fix this for vflip != 0

			saa7146_write(dev, PROT_ADDR1, 0);
			saa7146_write(dev, MC2, (MASK_02|MASK_18));

			/* write the address of the rps-program */
			saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle);
			/* turn on rps */
			saa7146_write(dev, MC1, (MASK_12 | MASK_28));

/*
			printk("vdma%d.base_even:     0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1));
			printk("vdma%d.base_odd:      0x%08x\n", 1,saa7146_read(dev,BASE_ODD1));
			printk("vdma%d.prot_addr:     0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1));
			printk("vdma%d.base_page:     0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1));
			printk("vdma%d.pitch:         0x%08x\n", 1,saa7146_read(dev,PITCH1));
			printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1));
*/
		}
		del_timer(&q->timeout);
	}
}

void saa7146_buffer_timeout(unsigned long data)
{
	struct saa7146_dmaqueue *q = (struct saa7146_dmaqueue*)data;
	struct saa7146_dev *dev = q->dev;
	unsigned long flags;

	DEB_EE("dev:%p, dmaq:%p\n", dev, q);

	spin_lock_irqsave(&dev->slock,flags);
	if (q->curr) {
		DEB_D("timeout on %p\n", q->curr);
		saa7146_buffer_finish(dev,q,VIDEOBUF_ERROR);
	}

	/* we don't restart the transfer here like other drivers do. when
	   a streaming capture is disabled, the timeout function will be
	   called for the current buffer. if we activate the next buffer now,
	   we mess up our capture logic. if a timeout occurs on another buffer,
	   then something is seriously broken before, so no need to buffer the
	   next capture IMHO... */
/*
	saa7146_buffer_next(dev,q);
*/
	spin_unlock_irqrestore(&dev->slock,flags);
}

/********************************************************************************/
/* file operations */

static int fops_open(struct file *file)
{
	struct video_device *vdev = video_devdata(file);
	struct saa7146_dev *dev = video_drvdata(file);
	struct saa7146_fh *fh = NULL;
	int result = 0;

	enum v4l2_buf_type type;

	DEB_EE("file:%p, dev:%s\n", file, video_device_node_name(vdev));

	if (mutex_lock_interruptible(&saa7146_devices_lock))
		return -ERESTARTSYS;

	DEB_D("using: %p\n", dev);

	type = vdev->vfl_type == VFL_TYPE_GRABBER
	     ? V4L2_BUF_TYPE_VIDEO_CAPTURE
	     : V4L2_BUF_TYPE_VBI_CAPTURE;

	/* check if an extension is registered */
	if( NULL == dev->ext ) {
		DEB_S("no extension registered for this device\n");
		result = -ENODEV;
		goto out;
	}

	/* allocate per open data */
	fh = kzalloc(sizeof(*fh),GFP_KERNEL);
	if (NULL == fh) {
		DEB_S("cannot allocate memory for per open data\n");
		result = -ENOMEM;
		goto out;
	}

	file->private_data = fh;
	fh->dev = dev;
	fh->type = type;

	if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
		DEB_S("initializing vbi...\n");
		if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
			result = saa7146_vbi_uops.open(dev,file);
		if (dev->ext_vv_data->vbi_fops.open)
			dev->ext_vv_data->vbi_fops.open(file);
	} else {
		DEB_S("initializing video...\n");
		result = saa7146_video_uops.open(dev,file);
	}

	if (0 != result) {
		goto out;
	}

	if( 0 == try_module_get(dev->ext->module)) {
		result = -EINVAL;
		goto out;
	}

	result = 0;
out:
	if (fh && result != 0) {
		kfree(fh);
		file->private_data = NULL;
	}
	mutex_unlock(&saa7146_devices_lock);
	return result;
}

static int fops_release(struct file *file)
{
	struct saa7146_fh  *fh  = file->private_data;
	struct saa7146_dev *dev = fh->dev;

	DEB_EE("file:%p\n", file);

	if (mutex_lock_interruptible(&saa7146_devices_lock))
		return -ERESTARTSYS;

	if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
		if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
			saa7146_vbi_uops.release(dev,file);
		if (dev->ext_vv_data->vbi_fops.release)
			dev->ext_vv_data->vbi_fops.release(file);
	} else {
		saa7146_video_uops.release(dev,file);
	}

	module_put(dev->ext->module);
	file->private_data = NULL;
	kfree(fh);

	mutex_unlock(&saa7146_devices_lock);

	return 0;
}

static int fops_mmap(struct file *file, struct vm_area_struct * vma)
{
	struct saa7146_fh *fh = file->private_data;
	struct videobuf_queue *q;

	switch (fh->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
		DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n",
		       file, vma);
		q = &fh->video_q;
		break;
		}
	case V4L2_BUF_TYPE_VBI_CAPTURE: {
		DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n",
		       file, vma);
		q = &fh->vbi_q;
		break;
		}
	default:
		BUG();
		return 0;
	}

	return videobuf_mmap_mapper(q,vma);
}

static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait)
{
	struct saa7146_fh *fh = file->private_data;
	struct videobuf_buffer *buf = NULL;
	struct videobuf_queue *q;

	DEB_EE("file:%p, poll:%p\n", file, wait);

	if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
		if( 0 == fh->vbi_q.streaming )
			return videobuf_poll_stream(file, &fh->vbi_q, wait);
		q = &fh->vbi_q;
	} else {
		DEB_D("using video queue\n");
		q = &fh->video_q;
	}

	if (!list_empty(&q->stream))
		buf = list_entry(q->stream.next, struct videobuf_buffer, stream);

	if (!buf) {
		DEB_D("buf == NULL!\n");
		return POLLERR;
	}

	poll_wait(file, &buf->done, wait);
	if (buf->state == VIDEOBUF_DONE || buf->state == VIDEOBUF_ERROR) {
		DEB_D("poll succeeded!\n");
		return POLLIN|POLLRDNORM;
	}

	DEB_D("nothing to poll for, buf->state:%d\n", buf->state);
	return 0;
}

static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
{
	struct saa7146_fh *fh = file->private_data;

	switch (fh->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
/*
		DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, data:%p, count:%lun",
		       file, data, (unsigned long)count);
*/
		return saa7146_video_uops.read(file,data,count,ppos);
	case V4L2_BUF_TYPE_VBI_CAPTURE:
/*
		DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, data:%p, count:%lu\n",
		       file, data, (unsigned long)count);
*/
		if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
			return saa7146_vbi_uops.read(file,data,count,ppos);
		return -EINVAL;
	default:
		BUG();
		return 0;
	}
}

static ssize_t fops_write(struct file *file, const char __user *data, size_t count, loff_t *ppos)
{
	struct saa7146_fh *fh = file->private_data;

	switch (fh->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		return -EINVAL;
	case V4L2_BUF_TYPE_VBI_CAPTURE:
		if (fh->dev->ext_vv_data->vbi_fops.write)
			return fh->dev->ext_vv_data->vbi_fops.write(file, data, count, ppos);
		else
			return -EINVAL;
	default:
		BUG();
		return -EINVAL;
	}
}

static const struct v4l2_file_operations video_fops =
{
	.owner		= THIS_MODULE,
	.open		= fops_open,
	.release	= fops_release,
	.read		= fops_read,
	.write		= fops_write,
	.poll		= fops_poll,
	.mmap		= fops_mmap,
	.unlocked_ioctl	= video_ioctl2,
};

static void vv_callback(struct saa7146_dev *dev, unsigned long status)
{
	u32 isr = status;

	DEB_INT("dev:%p, isr:0x%08x\n", dev, (u32)status);

	if (0 != (isr & (MASK_27))) {
		DEB_INT("irq: RPS0 (0x%08x)\n", isr);
		saa7146_video_uops.irq_done(dev,isr);
	}

	if (0 != (isr & (MASK_28))) {
		u32 mc2 = saa7146_read(dev, MC2);
		if( 0 != (mc2 & MASK_15)) {
			DEB_INT("irq: RPS1 vbi workaround (0x%08x)\n", isr);
			wake_up(&dev->vv_data->vbi_wq);
			saa7146_write(dev,MC2, MASK_31);
			return;
		}
		DEB_INT("irq: RPS1 (0x%08x)\n", isr);
		saa7146_vbi_uops.irq_done(dev,isr);
	}
}

static const struct v4l2_ctrl_ops saa7146_ctrl_ops = {
	.s_ctrl = saa7146_s_ctrl,
};

int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
{
	struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler;
	struct v4l2_pix_format *fmt;
	struct v4l2_vbi_format *vbi;
	struct saa7146_vv *vv;
	int err;

	err = v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev);
	if (err)
		return err;

	v4l2_ctrl_handler_init(hdl, 6);
	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
		V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
		V4L2_CID_CONTRAST, 0, 127, 1, 64);
	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
		V4L2_CID_SATURATION, 0, 127, 1, 64);
	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
		V4L2_CID_VFLIP, 0, 1, 1, 0);
	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
		V4L2_CID_HFLIP, 0, 1, 1, 0);
	if (hdl->error) {
		err = hdl->error;
		v4l2_ctrl_handler_free(hdl);
		return err;
	}
	dev->v4l2_dev.ctrl_handler = hdl;

	vv = kzalloc(sizeof(struct saa7146_vv), GFP_KERNEL);
	if (vv == NULL) {
		ERR("out of memory. aborting.\n");
		v4l2_ctrl_handler_free(hdl);
		return -ENOMEM;
	}
	ext_vv->ops = saa7146_video_ioctl_ops;
	ext_vv->core_ops = &saa7146_video_ioctl_ops;

	DEB_EE("dev:%p\n", dev);

	/* set default values for video parts of the saa7146 */
	saa7146_write(dev, BCS_CTRL, 0x80400040);

	/* enable video-port pins */
	saa7146_write(dev, MC1, (MASK_10 | MASK_26));

	/* save per-device extension data (one extension can
	   handle different devices that might need different
	   configuration data) */
	dev->ext_vv_data = ext_vv;

	vv->d_clipping.cpu_addr = pci_alloc_consistent(dev->pci, SAA7146_CLIPPING_MEM, &vv->d_clipping.dma_handle);
	if( NULL == vv->d_clipping.cpu_addr ) {
		ERR("out of memory. aborting.\n");
		kfree(vv);
		v4l2_ctrl_handler_free(hdl);
		return -1;
	}
	memset(vv->d_clipping.cpu_addr, 0x0, SAA7146_CLIPPING_MEM);

	saa7146_video_uops.init(dev,vv);
	if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
		saa7146_vbi_uops.init(dev,vv);

	fmt = &vv->ov_fb.fmt;
	fmt->width = vv->standard->h_max_out;
	fmt->height = vv->standard->v_max_out;
	fmt->pixelformat = V4L2_PIX_FMT_RGB565;
	fmt->bytesperline = 2 * fmt->width;
	fmt->sizeimage = fmt->bytesperline * fmt->height;
	fmt->colorspace = V4L2_COLORSPACE_SRGB;

	fmt = &vv->video_fmt;
	fmt->width = 384;
	fmt->height = 288;
	fmt->pixelformat = V4L2_PIX_FMT_BGR24;
	fmt->field = V4L2_FIELD_ANY;
	fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
	fmt->bytesperline = 3 * fmt->width;
	fmt->sizeimage = fmt->bytesperline * fmt->height;

	vbi = &vv->vbi_fmt;
	vbi->sampling_rate	= 27000000;
	vbi->offset		= 248; /* todo */
	vbi->samples_per_line	= 720 * 2;
	vbi->sample_format	= V4L2_PIX_FMT_GREY;

	/* fixme: this only works for PAL */
	vbi->start[0] = 5;
	vbi->count[0] = 16;
	vbi->start[1] = 312;
	vbi->count[1] = 16;

	init_timer(&vv->vbi_read_timeout);

	vv->ov_fb.capability = V4L2_FBUF_CAP_LIST_CLIPPING;
	vv->ov_fb.flags = V4L2_FBUF_FLAG_PRIMARY;
	dev->vv_data = vv;
	dev->vv_callback = &vv_callback;

	return 0;
}
EXPORT_SYMBOL_GPL(saa7146_vv_init);

int saa7146_vv_release(struct saa7146_dev* dev)
{
	struct saa7146_vv *vv = dev->vv_data;

	DEB_EE("dev:%p\n", dev);

	v4l2_device_unregister(&dev->v4l2_dev);
	pci_free_consistent(dev->pci, SAA7146_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
	v4l2_ctrl_handler_free(&dev->ctrl_handler);
	kfree(vv);
	dev->vv_data = NULL;
	dev->vv_callback = NULL;

	return 0;
}
EXPORT_SYMBOL_GPL(saa7146_vv_release);

int saa7146_register_device(struct video_device **vid, struct saa7146_dev* dev,
			    char *name, int type)
{
	struct video_device *vfd;
	int err;
	int i;

	DEB_EE("dev:%p, name:'%s', type:%d\n", dev, name, type);

	// released by vfd->release
	vfd = video_device_alloc();
	if (vfd == NULL)
		return -ENOMEM;

	vfd->fops = &video_fops;
	vfd->ioctl_ops = &dev->ext_vv_data->ops;
	vfd->release = video_device_release;
	/* Locking in file operations other than ioctl should be done by
	   the driver, not the V4L2 core.
	   This driver needs auditing so that this flag can be removed. */
	set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
	vfd->lock = &dev->v4l2_lock;
	vfd->v4l2_dev = &dev->v4l2_dev;
	vfd->tvnorms = 0;
	for (i = 0; i < dev->ext_vv_data->num_stds; i++)
		vfd->tvnorms |= dev->ext_vv_data->stds[i].id;
	strlcpy(vfd->name, name, sizeof(vfd->name));
	video_set_drvdata(vfd, dev);

	err = video_register_device(vfd, type, -1);
	if (err < 0) {
		ERR("cannot register v4l2 device. skipping.\n");
		video_device_release(vfd);
		return err;
	}

	pr_info("%s: registered device %s [v4l2]\n",
		dev->name, video_device_node_name(vfd));

	*vid = vfd;
	return 0;
}
EXPORT_SYMBOL_GPL(saa7146_register_device);

int saa7146_unregister_device(struct video_device **vid, struct saa7146_dev* dev)
{
	DEB_EE("dev:%p\n", dev);

	video_unregister_device(*vid);
	*vid = NULL;

	return 0;
}
EXPORT_SYMBOL_GPL(saa7146_unregister_device);

static int __init saa7146_vv_init_module(void)
{
	return 0;
}


static void __exit saa7146_vv_cleanup_module(void)
{
}

module_init(saa7146_vv_init_module);
module_exit(saa7146_vv_cleanup_module);

MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
MODULE_DESCRIPTION("video4linux driver for saa7146-based hardware");
MODULE_LICENSE("GPL");
Commit	Line	Data
44d0b80e JP	1	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
44d0b80e JP	2
1da177e4	3	#include <media/saa7146_vv.h>
7a707b89	4	#include <linux/module.h>
1da177e4	5
1da177e4 LT	6	/****************************************************************************/
	7	/* resource management functions, shamelessly stolen from saa7134 driver */
	8
	9	int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit)
	10	{
	11	struct saa7146_dev *dev = fh->dev;
	12	struct saa7146_vv *vv = dev->vv_data;
	13
	14	if (fh->resources & bit) {
44d0b80e JP	15	DEB_D("already allocated! want: 0x%02x, cur:0x%02x\n",
44d0b80e JP	16	bit, vv->resources);
1da177e4 LT	17	/* have it already allocated */
	18	return 1;
	19	}
	20
	21	/* is it free? */
1da177e4	22	if (vv->resources & bit) {
44d0b80e JP	23	DEB_D("locked! vv->resources:0x%02x, we want:0x%02x\n",
44d0b80e JP	24	vv->resources, bit);
1da177e4	25	/* no, someone else uses it */
1da177e4 LT	26	return 0;
	27	}
	28	/* it's free, grab it */
44d0b80e	29	fh->resources \|= bit;
1da177e4	30	vv->resources \|= bit;
44d0b80e	31	DEB_D("res: get 0x%02x, cur:0x%02x\n", bit, vv->resources);
1da177e4 LT	32	return 1;
	33	}
	34
	35	void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
	36	{
	37	struct saa7146_dev *dev = fh->dev;
	38	struct saa7146_vv *vv = dev->vv_data;
	39
ae24601b	40	BUG_ON((fh->resources & bits) != bits);
1da177e4	41
44d0b80e	42	fh->resources &= ~bits;
1da177e4	43	vv->resources &= ~bits;
44d0b80e	44	DEB_D("res: put 0x%02x, cur:0x%02x\n", bits, vv->resources);
1da177e4 LT	45	}
	46
	47
	48	/********************************************************************************/
	49	/* common dma functions */
	50
c7b0ac05 MCC	51	void saa7146_dma_free(struct saa7146_dev dev,struct videobuf_queue q,
c7b0ac05 MCC	52	struct saa7146_buf *buf)
1da177e4	53	{
c1accaa2	54	struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
44d0b80e	55	DEB_EE("dev:%p, buf:%p\n", dev, buf);
1da177e4	56
ae24601b	57	BUG_ON(in_interrupt());
1da177e4	58
0e0809a5	59	videobuf_waiton(q, &buf->vb, 0, 0);
95268403	60	videobuf_dma_unmap(q->dev, dma);
c1accaa2	61	videobuf_dma_free(dma);
0fc0686e	62	buf->vb.state = VIDEOBUF_NEEDS_INIT;
1da177e4 LT	63	}
	64
	65
	66	/********************************************************************************/
	67	/* common buffer functions */
	68
	69	int saa7146_buffer_queue(struct saa7146_dev *dev,
	70	struct saa7146_dmaqueue *q,
	71	struct saa7146_buf *buf)
	72	{
	73	assert_spin_locked(&dev->slock);
44d0b80e	74	DEB_EE("dev:%p, dmaq:%p, buf:%p\n", dev, q, buf);
1da177e4 LT	75
	76	BUG_ON(!q);
	77
	78	if (NULL == q->curr) {
	79	q->curr = buf;
44d0b80e	80	DEB_D("immediately activating buffer %p\n", buf);
1da177e4 LT	81	buf->activate(dev,buf,NULL);
	82	} else {
	83	list_add_tail(&buf->vb.queue,&q->queue);
0fc0686e	84	buf->vb.state = VIDEOBUF_QUEUED;
44d0b80e JP	85	DEB_D("adding buffer %p to queue. (active buffer present)\n",
44d0b80e JP	86	buf);
1da177e4 LT	87	}
	88	return 0;
	89	}
	90
	91	void saa7146_buffer_finish(struct saa7146_dev *dev,
	92	struct saa7146_dmaqueue *q,
	93	int state)
	94	{
	95	assert_spin_locked(&dev->slock);
44d0b80e JP	96	DEB_EE("dev:%p, dmaq:%p, state:%d\n", dev, q, state);
44d0b80e JP	97	DEB_EE("q->curr:%p\n", q->curr);
1da177e4 LT	98
	99	BUG_ON(!q->curr);
	100
	101	/* finish current buffer */
	102	if (NULL == q->curr) {
44d0b80e	103	DEB_D("aiii. no current buffer\n");
afd1a0c9	104	return;
1da177e4	105	}
afd1a0c9	106
1da177e4 LT	107	q->curr->vb.state = state;
	108	do_gettimeofday(&q->curr->vb.ts);
	109	wake_up(&q->curr->vb.done);
	110
	111	q->curr = NULL;
	112	}
	113
	114	void saa7146_buffer_next(struct saa7146_dev *dev,
	115	struct saa7146_dmaqueue *q, int vbi)
	116	{
	117	struct saa7146_buf buf,next = NULL;
	118
	119	BUG_ON(!q);
	120
44d0b80e	121	DEB_INT("dev:%p, dmaq:%p, vbi:%d\n", dev, q, vbi);
1da177e4 LT	122
	123	assert_spin_locked(&dev->slock);
	124	if (!list_empty(&q->queue)) {
	125	/* activate next one from queue */
	126	buf = list_entry(q->queue.next,struct saa7146_buf,vb.queue);
	127	list_del(&buf->vb.queue);
	128	if (!list_empty(&q->queue))
	129	next = list_entry(q->queue.next,struct saa7146_buf, vb.queue);
	130	q->curr = buf;
44d0b80e JP	131	DEB_INT("next buffer: buf:%p, prev:%p, next:%p\n",
44d0b80e JP	132	buf, q->queue.prev, q->queue.next);
1da177e4 LT	133	buf->activate(dev,buf,next);
1da177e4 LT	134	} else {
44d0b80e	135	DEB_INT("no next buffer. stopping.\n");
1da177e4 LT	136	if( 0 != vbi ) {
	137	/* turn off video-dma3 */
	138	saa7146_write(dev,MC1, MASK_20);
	139	} else {
	140	/* nothing to do -- just prevent next video-dma1 transfer
	141	by lowering the protection address */
	142
	143	// fixme: fix this for vflip != 0
	144
	145	saa7146_write(dev, PROT_ADDR1, 0);
afd1a0c9	146	saa7146_write(dev, MC2, (MASK_02\|MASK_18));
1da177e4 LT	147
	148	/* write the address of the rps-program */
	149	saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle);
	150	/* turn on rps */
	151	saa7146_write(dev, MC1, (MASK_12 \| MASK_28));
afd1a0c9	152
1da177e4 LT	153	/*
	154	printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1));
	155	printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1));
	156	printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1));
	157	printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1));
	158	printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1));
	159	printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1));
	160	*/
	161	}
	162	del_timer(&q->timeout);
	163	}
	164	}
	165
	166	void saa7146_buffer_timeout(unsigned long data)
	167	{
	168	struct saa7146_dmaqueue q = (struct saa7146_dmaqueue)data;
	169	struct saa7146_dev *dev = q->dev;
	170	unsigned long flags;
	171
44d0b80e	172	DEB_EE("dev:%p, dmaq:%p\n", dev, q);
1da177e4 LT	173
	174	spin_lock_irqsave(&dev->slock,flags);
	175	if (q->curr) {
44d0b80e	176	DEB_D("timeout on %p\n", q->curr);
0fc0686e	177	saa7146_buffer_finish(dev,q,VIDEOBUF_ERROR);
1da177e4 LT	178	}
	179
	180	/* we don't restart the transfer here like other drivers do. when
	181	a streaming capture is disabled, the timeout function will be
	182	called for the current buffer. if we activate the next buffer now,
	183	we mess up our capture logic. if a timeout occurs on another buffer,
	184	then something is seriously broken before, so no need to buffer the
	185	next capture IMHO... */
	186	/*
	187	saa7146_buffer_next(dev,q);
	188	*/
	189	spin_unlock_irqrestore(&dev->slock,flags);
	190	}
	191
	192	/********************************************************************************/
	193	/* file operations */
	194
bec43661	195	static int fops_open(struct file *file)
1da177e4	196	{
63b0d5ad LP	197	struct video_device *vdev = video_devdata(file);
63b0d5ad LP	198	struct saa7146_dev *dev = video_drvdata(file);
1da177e4 LT	199	struct saa7146_fh *fh = NULL;
	200	int result = 0;
	201
63b0d5ad	202	enum v4l2_buf_type type;
1da177e4	203
44d0b80e	204	DEB_EE("file:%p, dev:%s\n", file, video_device_node_name(vdev));
1da177e4	205
3593cab5	206	if (mutex_lock_interruptible(&saa7146_devices_lock))
1da177e4 LT	207	return -ERESTARTSYS;
1da177e4 LT	208
44d0b80e	209	DEB_D("using: %p\n", dev);
1da177e4	210
63b0d5ad LP	211	type = vdev->vfl_type == VFL_TYPE_GRABBER
	212	? V4L2_BUF_TYPE_VIDEO_CAPTURE
	213	: V4L2_BUF_TYPE_VBI_CAPTURE;
	214
1da177e4 LT	215	/* check if an extension is registered */
1da177e4 LT	216	if( NULL == dev->ext ) {
44d0b80e	217	DEB_S("no extension registered for this device\n");
1da177e4 LT	218	result = -ENODEV;
	219	goto out;
	220	}
	221
	222	/* allocate per open data */
7408187d	223	fh = kzalloc(sizeof(*fh),GFP_KERNEL);
1da177e4	224	if (NULL == fh) {
44d0b80e	225	DEB_S("cannot allocate memory for per open data\n");
1da177e4 LT	226	result = -ENOMEM;
	227	goto out;
	228	}
afd1a0c9	229
1da177e4 LT	230	file->private_data = fh;
	231	fh->dev = dev;
	232	fh->type = type;
	233
	234	if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
44d0b80e	235	DEB_S("initializing vbi...\n");
5b0fa4ff OE	236	if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
	237	result = saa7146_vbi_uops.open(dev,file);
	238	if (dev->ext_vv_data->vbi_fops.open)
bec43661	239	dev->ext_vv_data->vbi_fops.open(file);
1da177e4	240	} else {
44d0b80e	241	DEB_S("initializing video...\n");
1da177e4 LT	242	result = saa7146_video_uops.open(dev,file);
	243	}
	244
	245	if (0 != result) {
	246	goto out;
	247	}
	248
	249	if( 0 == try_module_get(dev->ext->module)) {
	250	result = -EINVAL;
	251	goto out;
	252	}
	253
	254	result = 0;
	255	out:
5fa1247a	256	if (fh && result != 0) {
1da177e4 LT	257	kfree(fh);
	258	file->private_data = NULL;
	259	}
3593cab5	260	mutex_unlock(&saa7146_devices_lock);
afd1a0c9	261	return result;
1da177e4 LT	262	}
1da177e4 LT	263
bec43661	264	static int fops_release(struct file *file)
1da177e4 LT	265	{
	266	struct saa7146_fh *fh = file->private_data;
	267	struct saa7146_dev *dev = fh->dev;
	268
44d0b80e	269	DEB_EE("file:%p\n", file);
1da177e4	270
3593cab5	271	if (mutex_lock_interruptible(&saa7146_devices_lock))
1da177e4 LT	272	return -ERESTARTSYS;
	273
	274	if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
5b0fa4ff OE	275	if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
	276	saa7146_vbi_uops.release(dev,file);
	277	if (dev->ext_vv_data->vbi_fops.release)
bec43661	278	dev->ext_vv_data->vbi_fops.release(file);
1da177e4 LT	279	} else {
	280	saa7146_video_uops.release(dev,file);
	281	}
	282
	283	module_put(dev->ext->module);
	284	file->private_data = NULL;
	285	kfree(fh);
	286
3593cab5	287	mutex_unlock(&saa7146_devices_lock);
1da177e4 LT	288
	289	return 0;
	290	}
	291
1da177e4 LT	292	static int fops_mmap(struct file file, struct vm_area_struct vma)
	293	{
	294	struct saa7146_fh *fh = file->private_data;
	295	struct videobuf_queue *q;
	296
	297	switch (fh->type) {
	298	case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
44d0b80e JP	299	DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n",
44d0b80e JP	300	file, vma);
1da177e4 LT	301	q = &fh->video_q;
	302	break;
	303	}
	304	case V4L2_BUF_TYPE_VBI_CAPTURE: {
44d0b80e JP	305	DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n",
44d0b80e JP	306	file, vma);
1da177e4 LT	307	q = &fh->vbi_q;
	308	break;
	309	}
	310	default:
	311	BUG();
	312	return 0;
	313	}
50c25fff	314
1da177e4 LT	315	return videobuf_mmap_mapper(q,vma);
	316	}
	317
	318	static unsigned int fops_poll(struct file file, struct poll_table_struct wait)
	319	{
	320	struct saa7146_fh *fh = file->private_data;
	321	struct videobuf_buffer *buf = NULL;
	322	struct videobuf_queue *q;
	323
44d0b80e	324	DEB_EE("file:%p, poll:%p\n", file, wait);
1da177e4 LT	325
	326	if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
	327	if( 0 == fh->vbi_q.streaming )
	328	return videobuf_poll_stream(file, &fh->vbi_q, wait);
	329	q = &fh->vbi_q;
	330	} else {
44d0b80e	331	DEB_D("using video queue\n");
1da177e4 LT	332	q = &fh->video_q;
	333	}
	334
	335	if (!list_empty(&q->stream))
	336	buf = list_entry(q->stream.next, struct videobuf_buffer, stream);
	337
	338	if (!buf) {
44d0b80e	339	DEB_D("buf == NULL!\n");
1da177e4 LT	340	return POLLERR;
	341	}
	342
	343	poll_wait(file, &buf->done, wait);
0fc0686e	344	if (buf->state == VIDEOBUF_DONE \|\| buf->state == VIDEOBUF_ERROR) {
44d0b80e	345	DEB_D("poll succeeded!\n");
1da177e4 LT	346	return POLLIN\|POLLRDNORM;
	347	}
	348
44d0b80e	349	DEB_D("nothing to poll for, buf->state:%d\n", buf->state);
1da177e4 LT	350	return 0;
	351	}
	352
	353	static ssize_t fops_read(struct file file, char __user data, size_t count, loff_t *ppos)
	354	{
	355	struct saa7146_fh *fh = file->private_data;
	356
	357	switch (fh->type) {
44d0b80e JP	358	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
	359	/*
	360	DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, data:%p, count:%lun",
	361	file, data, (unsigned long)count);
	362	*/
1da177e4	363	return saa7146_video_uops.read(file,data,count,ppos);
44d0b80e JP	364	case V4L2_BUF_TYPE_VBI_CAPTURE:
	365	/*
	366	DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, data:%p, count:%lu\n",
	367	file, data, (unsigned long)count);
	368	*/
5b0fa4ff OE	369	if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
5b0fa4ff OE	370	return saa7146_vbi_uops.read(file,data,count,ppos);
44d0b80e	371	return -EINVAL;
1da177e4 LT	372	default:
	373	BUG();
	374	return 0;
	375	}
	376	}
	377
5b0fa4ff OE	378	static ssize_t fops_write(struct file file, const char __user data, size_t count, loff_t *ppos)
	379	{
	380	struct saa7146_fh *fh = file->private_data;
	381
	382	switch (fh->type) {
	383	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
	384	return -EINVAL;
	385	case V4L2_BUF_TYPE_VBI_CAPTURE:
	386	if (fh->dev->ext_vv_data->vbi_fops.write)
	387	return fh->dev->ext_vv_data->vbi_fops.write(file, data, count, ppos);
	388	else
	389	return -EINVAL;
	390	default:
	391	BUG();
	392	return -EINVAL;
	393	}
	394	}
	395
bec43661	396	static const struct v4l2_file_operations video_fops =
1da177e4 LT	397	{
	398	.owner = THIS_MODULE,
	399	.open = fops_open,
	400	.release = fops_release,
	401	.read = fops_read,
5b0fa4ff	402	.write = fops_write,
1da177e4 LT	403	.poll = fops_poll,
1da177e4 LT	404	.mmap = fops_mmap,
9af39713	405	.unlocked_ioctl = video_ioctl2,
1da177e4 LT	406	};
1da177e4 LT	407
52c1da39	408	static void vv_callback(struct saa7146_dev *dev, unsigned long status)
1da177e4 LT	409	{
1da177e4 LT	410	u32 isr = status;
afd1a0c9	411
44d0b80e	412	DEB_INT("dev:%p, isr:0x%08x\n", dev, (u32)status);
1da177e4 LT	413
1da177e4 LT	414	if (0 != (isr & (MASK_27))) {
44d0b80e	415	DEB_INT("irq: RPS0 (0x%08x)\n", isr);
1da177e4 LT	416	saa7146_video_uops.irq_done(dev,isr);
	417	}
	418
	419	if (0 != (isr & (MASK_28))) {
	420	u32 mc2 = saa7146_read(dev, MC2);
	421	if( 0 != (mc2 & MASK_15)) {
44d0b80e	422	DEB_INT("irq: RPS1 vbi workaround (0x%08x)\n", isr);
1da177e4 LT	423	wake_up(&dev->vv_data->vbi_wq);
	424	saa7146_write(dev,MC2, MASK_31);
	425	return;
	426	}
44d0b80e	427	DEB_INT("irq: RPS1 (0x%08x)\n", isr);
1da177e4 LT	428	saa7146_vbi_uops.irq_done(dev,isr);
	429	}
	430	}
	431
6e65ca94 HV	432	static const struct v4l2_ctrl_ops saa7146_ctrl_ops = {
	433	.s_ctrl = saa7146_s_ctrl,
	434	};
	435
1da177e4 LT	436	int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
1da177e4 LT	437	{
6e65ca94	438	struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler;
5da545ad	439	struct v4l2_pix_format *fmt;
fca3469a	440	struct v4l2_vbi_format *vbi;
230b65f9	441	struct saa7146_vv *vv;
03b1930e HV	442	int err;
	443
	444	err = v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev);
	445	if (err)
	446	return err;
230b65f9	447
6e65ca94 HV	448	v4l2_ctrl_handler_init(hdl, 6);
	449	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
	450	V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
	451	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
	452	V4L2_CID_CONTRAST, 0, 127, 1, 64);
	453	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
	454	V4L2_CID_SATURATION, 0, 127, 1, 64);
	455	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
	456	V4L2_CID_VFLIP, 0, 1, 1, 0);
	457	v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
	458	V4L2_CID_HFLIP, 0, 1, 1, 0);
	459	if (hdl->error) {
	460	err = hdl->error;
	461	v4l2_ctrl_handler_free(hdl);
	462	return err;
	463	}
	464	dev->v4l2_dev.ctrl_handler = hdl;
	465
230b65f9	466	vv = kzalloc(sizeof(struct saa7146_vv), GFP_KERNEL);
b960074f	467	if (vv == NULL) {
44d0b80e	468	ERR("out of memory. aborting.\n");
6e65ca94	469	v4l2_ctrl_handler_free(hdl);
230b65f9	470	return -ENOMEM;
1da177e4	471	}
b960074f HV	472	ext_vv->ops = saa7146_video_ioctl_ops;
b960074f HV	473	ext_vv->core_ops = &saa7146_video_ioctl_ops;
1da177e4	474
44d0b80e	475	DEB_EE("dev:%p\n", dev);
1da177e4 LT	476
	477	/* set default values for video parts of the saa7146 */
	478	saa7146_write(dev, BCS_CTRL, 0x80400040);
	479
	480	/* enable video-port pins */
	481	saa7146_write(dev, MC1, (MASK_10 \| MASK_26));
	482
	483	/* save per-device extension data (one extension can
	484	handle different devices that might need different
	485	configuration data) */
	486	dev->ext_vv_data = ext_vv;
afd1a0c9	487
afd1a0c9	488	vv->d_clipping.cpu_addr = pci_alloc_consistent(dev->pci, SAA7146_CLIPPING_MEM, &vv->d_clipping.dma_handle);
1da177e4	489	if( NULL == vv->d_clipping.cpu_addr ) {
44d0b80e	490	ERR("out of memory. aborting.\n");
1da177e4	491	kfree(vv);
6e65ca94	492	v4l2_ctrl_handler_free(hdl);
1da177e4 LT	493	return -1;
	494	}
	495	memset(vv->d_clipping.cpu_addr, 0x0, SAA7146_CLIPPING_MEM);
	496
	497	saa7146_video_uops.init(dev,vv);
5b0fa4ff OE	498	if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
5b0fa4ff OE	499	saa7146_vbi_uops.init(dev,vv);
afd1a0c9	500
5da545ad HV	501	fmt = &vv->ov_fb.fmt;
	502	fmt->width = vv->standard->h_max_out;
	503	fmt->height = vv->standard->v_max_out;
	504	fmt->pixelformat = V4L2_PIX_FMT_RGB565;
	505	fmt->bytesperline = 2 * fmt->width;
	506	fmt->sizeimage = fmt->bytesperline * fmt->height;
	507	fmt->colorspace = V4L2_COLORSPACE_SRGB;
fd74d6eb HV	508
	509	fmt = &vv->video_fmt;
	510	fmt->width = 384;
	511	fmt->height = 288;
	512	fmt->pixelformat = V4L2_PIX_FMT_BGR24;
	513	fmt->field = V4L2_FIELD_ANY;
	514	fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
	515	fmt->bytesperline = 3 * fmt->width;
	516	fmt->sizeimage = fmt->bytesperline * fmt->height;
	517
fca3469a HV	518	vbi = &vv->vbi_fmt;
	519	vbi->sampling_rate = 27000000;
	520	vbi->offset = 248; /* todo */
	521	vbi->samples_per_line = 720 * 2;
	522	vbi->sample_format = V4L2_PIX_FMT_GREY;
	523
	524	/* fixme: this only works for PAL */
	525	vbi->start[0] = 5;
	526	vbi->count[0] = 16;
	527	vbi->start[1] = 312;
	528	vbi->count[1] = 16;
	529
	530	init_timer(&vv->vbi_read_timeout);
	531
5da545ad HV	532	vv->ov_fb.capability = V4L2_FBUF_CAP_LIST_CLIPPING;
5da545ad HV	533	vv->ov_fb.flags = V4L2_FBUF_FLAG_PRIMARY;
1da177e4 LT	534	dev->vv_data = vv;
	535	dev->vv_callback = &vv_callback;
	536
	537	return 0;
	538	}
5d7dc8c4	539	EXPORT_SYMBOL_GPL(saa7146_vv_init);
1da177e4 LT	540
	541	int saa7146_vv_release(struct saa7146_dev* dev)
	542	{
	543	struct saa7146_vv *vv = dev->vv_data;
	544
44d0b80e	545	DEB_EE("dev:%p\n", dev);
afd1a0c9	546
230b65f9	547	v4l2_device_unregister(&dev->v4l2_dev);
58af0045	548	pci_free_consistent(dev->pci, SAA7146_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
6e65ca94	549	v4l2_ctrl_handler_free(&dev->ctrl_handler);
afd1a0c9	550	kfree(vv);
1da177e4 LT	551	dev->vv_data = NULL;
1da177e4 LT	552	dev->vv_callback = NULL;
afd1a0c9	553
1da177e4 LT	554	return 0;
1da177e4 LT	555	}
5d7dc8c4	556	EXPORT_SYMBOL_GPL(saa7146_vv_release);
1da177e4 LT	557
	558	int saa7146_register_device(struct video_device *vid, struct saa7146_dev dev,
	559	char *name, int type)
	560	{
1da177e4	561	struct video_device *vfd;
b960074f	562	int err;
d0852ed2	563	int i;
1da177e4	564
44d0b80e	565	DEB_EE("dev:%p, name:'%s', type:%d\n", dev, name, type);
1da177e4 LT	566
1da177e4 LT	567	// released by vfd->release
afd1a0c9	568	vfd = video_device_alloc();
1da177e4 LT	569	if (vfd == NULL)
	570	return -ENOMEM;
	571
b960074f	572	vfd->fops = &video_fops;
d0852ed2	573	vfd->ioctl_ops = &dev->ext_vv_data->ops;
1da177e4	574	vfd->release = video_device_release;
5126f259 HV	575	/* Locking in file operations other than ioctl should be done by
	576	the driver, not the V4L2 core.
	577	This driver needs auditing so that this flag can be removed. */
	578	set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
9af39713	579	vfd->lock = &dev->v4l2_lock;
6e65ca94	580	vfd->v4l2_dev = &dev->v4l2_dev;
d0852ed2 HV	581	vfd->tvnorms = 0;
	582	for (i = 0; i < dev->ext_vv_data->num_stds; i++)
	583	vfd->tvnorms \|= dev->ext_vv_data->stds[i].id;
b960074f	584	strlcpy(vfd->name, name, sizeof(vfd->name));
601e9444	585	video_set_drvdata(vfd, dev);
1da177e4	586
b960074f HV	587	err = video_register_device(vfd, type, -1);
b960074f HV	588	if (err < 0) {
44d0b80e	589	ERR("cannot register v4l2 device. skipping.\n");
a2a9b1ec	590	video_device_release(vfd);
b960074f	591	return err;
1da177e4 LT	592	}
1da177e4 LT	593
44d0b80e JP	594	pr_info("%s: registered device %s [v4l2]\n",
44d0b80e JP	595	dev->name, video_device_node_name(vfd));
1da177e4 LT	596
	597	*vid = vfd;
	598	return 0;
	599	}
5d7dc8c4	600	EXPORT_SYMBOL_GPL(saa7146_register_device);
1da177e4 LT	601
	602	int saa7146_unregister_device(struct video_device *vid, struct saa7146_dev dev)
	603	{
44d0b80e	604	DEB_EE("dev:%p\n", dev);
1da177e4	605
1da177e4 LT	606	video_unregister_device(*vid);
	607	*vid = NULL;
	608
	609	return 0;
	610	}
5d7dc8c4	611	EXPORT_SYMBOL_GPL(saa7146_unregister_device);
1da177e4 LT	612
	613	static int __init saa7146_vv_init_module(void)
	614	{
	615	return 0;
	616	}
	617
	618
	619	static void __exit saa7146_vv_cleanup_module(void)
	620	{
	621	}
	622
	623	module_init(saa7146_vv_init_module);
	624	module_exit(saa7146_vv_cleanup_module);
	625
	626	MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
	627	MODULE_DESCRIPTION("video4linux driver for saa7146-based hardware");
	628	MODULE_LICENSE("GPL");