1 // SPDX-License-Identifier: GPL-2.0-only
2 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
3
4 #include <media/drv-intf/saa7146_vv.h>
5 #include <linux/module.h>
6
7 /****************************************************************************/
8 /* resource management functions, shamelessly stolen from saa7134 driver */
9
saa7146_res_get(struct saa7146_fh * fh,unsigned int bit)10 int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit)
11 {
12 struct saa7146_dev *dev = fh->dev;
13 struct saa7146_vv *vv = dev->vv_data;
14
15 if (fh->resources & bit) {
16 DEB_D("already allocated! want: 0x%02x, cur:0x%02x\n",
17 bit, vv->resources);
18 /* have it already allocated */
19 return 1;
20 }
21
22 /* is it free? */
23 if (vv->resources & bit) {
24 DEB_D("locked! vv->resources:0x%02x, we want:0x%02x\n",
25 vv->resources, bit);
26 /* no, someone else uses it */
27 return 0;
28 }
29 /* it's free, grab it */
30 fh->resources |= bit;
31 vv->resources |= bit;
32 DEB_D("res: get 0x%02x, cur:0x%02x\n", bit, vv->resources);
33 return 1;
34 }
35
saa7146_res_free(struct saa7146_fh * fh,unsigned int bits)36 void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
37 {
38 struct saa7146_dev *dev = fh->dev;
39 struct saa7146_vv *vv = dev->vv_data;
40
41 BUG_ON((fh->resources & bits) != bits);
42
43 fh->resources &= ~bits;
44 vv->resources &= ~bits;
45 DEB_D("res: put 0x%02x, cur:0x%02x\n", bits, vv->resources);
46 }
47
48
49 /********************************************************************************/
50 /* common dma functions */
51
saa7146_dma_free(struct saa7146_dev * dev,struct videobuf_queue * q,struct saa7146_buf * buf)52 void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q,
53 struct saa7146_buf *buf)
54 {
55 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
56 DEB_EE("dev:%p, buf:%p\n", dev, buf);
57
58 BUG_ON(in_interrupt());
59
60 videobuf_waiton(q, &buf->vb, 0, 0);
61 videobuf_dma_unmap(q->dev, dma);
62 videobuf_dma_free(dma);
63 buf->vb.state = VIDEOBUF_NEEDS_INIT;
64 }
65
66
67 /********************************************************************************/
68 /* common buffer functions */
69
saa7146_buffer_queue(struct saa7146_dev * dev,struct saa7146_dmaqueue * q,struct saa7146_buf * buf)70 int saa7146_buffer_queue(struct saa7146_dev *dev,
71 struct saa7146_dmaqueue *q,
72 struct saa7146_buf *buf)
73 {
74 assert_spin_locked(&dev->slock);
75 DEB_EE("dev:%p, dmaq:%p, buf:%p\n", dev, q, buf);
76
77 BUG_ON(!q);
78
79 if (NULL == q->curr) {
80 q->curr = buf;
81 DEB_D("immediately activating buffer %p\n", buf);
82 buf->activate(dev,buf,NULL);
83 } else {
84 list_add_tail(&buf->vb.queue,&q->queue);
85 buf->vb.state = VIDEOBUF_QUEUED;
86 DEB_D("adding buffer %p to queue. (active buffer present)\n",
87 buf);
88 }
89 return 0;
90 }
91
saa7146_buffer_finish(struct saa7146_dev * dev,struct saa7146_dmaqueue * q,int state)92 void saa7146_buffer_finish(struct saa7146_dev *dev,
93 struct saa7146_dmaqueue *q,
94 int state)
95 {
96 assert_spin_locked(&dev->slock);
97 DEB_EE("dev:%p, dmaq:%p, state:%d\n", dev, q, state);
98 DEB_EE("q->curr:%p\n", q->curr);
99
100 /* finish current buffer */
101 if (NULL == q->curr) {
102 DEB_D("aiii. no current buffer\n");
103 return;
104 }
105
106 q->curr->vb.state = state;
107 q->curr->vb.ts = ktime_get_ns();
108 wake_up(&q->curr->vb.done);
109
110 q->curr = NULL;
111 }
112
saa7146_buffer_next(struct saa7146_dev * dev,struct saa7146_dmaqueue * q,int vbi)113 void saa7146_buffer_next(struct saa7146_dev *dev,
114 struct saa7146_dmaqueue *q, int vbi)
115 {
116 struct saa7146_buf *buf,*next = NULL;
117
118 BUG_ON(!q);
119
120 DEB_INT("dev:%p, dmaq:%p, vbi:%d\n", dev, q, vbi);
121
122 assert_spin_locked(&dev->slock);
123 if (!list_empty(&q->queue)) {
124 /* activate next one from queue */
125 buf = list_entry(q->queue.next,struct saa7146_buf,vb.queue);
126 list_del(&buf->vb.queue);
127 if (!list_empty(&q->queue))
128 next = list_entry(q->queue.next,struct saa7146_buf, vb.queue);
129 q->curr = buf;
130 DEB_INT("next buffer: buf:%p, prev:%p, next:%p\n",
131 buf, q->queue.prev, q->queue.next);
132 buf->activate(dev,buf,next);
133 } else {
134 DEB_INT("no next buffer. stopping.\n");
135 if( 0 != vbi ) {
136 /* turn off video-dma3 */
137 saa7146_write(dev,MC1, MASK_20);
138 } else {
139 /* nothing to do -- just prevent next video-dma1 transfer
140 by lowering the protection address */
141
142 // fixme: fix this for vflip != 0
143
144 saa7146_write(dev, PROT_ADDR1, 0);
145 saa7146_write(dev, MC2, (MASK_02|MASK_18));
146
147 /* write the address of the rps-program */
148 saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle);
149 /* turn on rps */
150 saa7146_write(dev, MC1, (MASK_12 | MASK_28));
151
152 /*
153 printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1));
154 printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1));
155 printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1));
156 printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1));
157 printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1));
158 printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1));
159 */
160 }
161 del_timer(&q->timeout);
162 }
163 }
164
saa7146_buffer_timeout(struct timer_list * t)165 void saa7146_buffer_timeout(struct timer_list *t)
166 {
167 struct saa7146_dmaqueue *q = from_timer(q, t, timeout);
168 struct saa7146_dev *dev = q->dev;
169 unsigned long flags;
170
171 DEB_EE("dev:%p, dmaq:%p\n", dev, q);
172
173 spin_lock_irqsave(&dev->slock,flags);
174 if (q->curr) {
175 DEB_D("timeout on %p\n", q->curr);
176 saa7146_buffer_finish(dev,q,VIDEOBUF_ERROR);
177 }
178
179 /* we don't restart the transfer here like other drivers do. when
180 a streaming capture is disabled, the timeout function will be
181 called for the current buffer. if we activate the next buffer now,
182 we mess up our capture logic. if a timeout occurs on another buffer,
183 then something is seriously broken before, so no need to buffer the
184 next capture IMHO... */
185 /*
186 saa7146_buffer_next(dev,q);
187 */
188 spin_unlock_irqrestore(&dev->slock,flags);
189 }
190
191 /********************************************************************************/
192 /* file operations */
193
fops_open(struct file * file)194 static int fops_open(struct file *file)
195 {
196 struct video_device *vdev = video_devdata(file);
197 struct saa7146_dev *dev = video_drvdata(file);
198 struct saa7146_fh *fh = NULL;
199 int result = 0;
200
201 DEB_EE("file:%p, dev:%s\n", file, video_device_node_name(vdev));
202
203 if (mutex_lock_interruptible(vdev->lock))
204 return -ERESTARTSYS;
205
206 DEB_D("using: %p\n", dev);
207
208 /* check if an extension is registered */
209 if( NULL == dev->ext ) {
210 DEB_S("no extension registered for this device\n");
211 result = -ENODEV;
212 goto out;
213 }
214
215 /* allocate per open data */
216 fh = kzalloc(sizeof(*fh),GFP_KERNEL);
217 if (NULL == fh) {
218 DEB_S("cannot allocate memory for per open data\n");
219 result = -ENOMEM;
220 goto out;
221 }
222
223 v4l2_fh_init(&fh->fh, vdev);
224
225 file->private_data = &fh->fh;
226 fh->dev = dev;
227
228 if (vdev->vfl_type == VFL_TYPE_VBI) {
229 DEB_S("initializing vbi...\n");
230 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
231 result = saa7146_vbi_uops.open(dev,file);
232 if (dev->ext_vv_data->vbi_fops.open)
233 dev->ext_vv_data->vbi_fops.open(file);
234 } else {
235 DEB_S("initializing video...\n");
236 result = saa7146_video_uops.open(dev,file);
237 }
238
239 if (0 != result) {
240 goto out;
241 }
242
243 if( 0 == try_module_get(dev->ext->module)) {
244 result = -EINVAL;
245 goto out;
246 }
247
248 result = 0;
249 v4l2_fh_add(&fh->fh);
250 out:
251 if (fh && result != 0) {
252 kfree(fh);
253 file->private_data = NULL;
254 }
255 mutex_unlock(vdev->lock);
256 return result;
257 }
258
fops_release(struct file * file)259 static int fops_release(struct file *file)
260 {
261 struct video_device *vdev = video_devdata(file);
262 struct saa7146_fh *fh = file->private_data;
263 struct saa7146_dev *dev = fh->dev;
264
265 DEB_EE("file:%p\n", file);
266
267 mutex_lock(vdev->lock);
268
269 if (vdev->vfl_type == VFL_TYPE_VBI) {
270 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
271 saa7146_vbi_uops.release(dev,file);
272 if (dev->ext_vv_data->vbi_fops.release)
273 dev->ext_vv_data->vbi_fops.release(file);
274 } else {
275 saa7146_video_uops.release(dev,file);
276 }
277
278 v4l2_fh_del(&fh->fh);
279 v4l2_fh_exit(&fh->fh);
280 module_put(dev->ext->module);
281 file->private_data = NULL;
282 kfree(fh);
283
284 mutex_unlock(vdev->lock);
285
286 return 0;
287 }
288
fops_mmap(struct file * file,struct vm_area_struct * vma)289 static int fops_mmap(struct file *file, struct vm_area_struct * vma)
290 {
291 struct video_device *vdev = video_devdata(file);
292 struct saa7146_fh *fh = file->private_data;
293 struct videobuf_queue *q;
294 int res;
295
296 switch (vdev->vfl_type) {
297 case VFL_TYPE_VIDEO: {
298 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n",
299 file, vma);
300 q = &fh->video_q;
301 break;
302 }
303 case VFL_TYPE_VBI: {
304 DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n",
305 file, vma);
306 if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_SLICED_VBI_OUTPUT)
307 return -ENODEV;
308 q = &fh->vbi_q;
309 break;
310 }
311 default:
312 BUG();
313 }
314
315 if (mutex_lock_interruptible(vdev->lock))
316 return -ERESTARTSYS;
317 res = videobuf_mmap_mapper(q, vma);
318 mutex_unlock(vdev->lock);
319 return res;
320 }
321
__fops_poll(struct file * file,struct poll_table_struct * wait)322 static __poll_t __fops_poll(struct file *file, struct poll_table_struct *wait)
323 {
324 struct video_device *vdev = video_devdata(file);
325 struct saa7146_fh *fh = file->private_data;
326 struct videobuf_buffer *buf = NULL;
327 struct videobuf_queue *q;
328 __poll_t res = v4l2_ctrl_poll(file, wait);
329
330 DEB_EE("file:%p, poll:%p\n", file, wait);
331
332 if (vdev->vfl_type == VFL_TYPE_VBI) {
333 if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_SLICED_VBI_OUTPUT)
334 return res | EPOLLOUT | EPOLLWRNORM;
335 if( 0 == fh->vbi_q.streaming )
336 return res | videobuf_poll_stream(file, &fh->vbi_q, wait);
337 q = &fh->vbi_q;
338 } else {
339 DEB_D("using video queue\n");
340 q = &fh->video_q;
341 }
342
343 if (!list_empty(&q->stream))
344 buf = list_entry(q->stream.next, struct videobuf_buffer, stream);
345
346 if (!buf) {
347 DEB_D("buf == NULL!\n");
348 return res | EPOLLERR;
349 }
350
351 poll_wait(file, &buf->done, wait);
352 if (buf->state == VIDEOBUF_DONE || buf->state == VIDEOBUF_ERROR) {
353 DEB_D("poll succeeded!\n");
354 return res | EPOLLIN | EPOLLRDNORM;
355 }
356
357 DEB_D("nothing to poll for, buf->state:%d\n", buf->state);
358 return res;
359 }
360
fops_poll(struct file * file,struct poll_table_struct * wait)361 static __poll_t fops_poll(struct file *file, struct poll_table_struct *wait)
362 {
363 struct video_device *vdev = video_devdata(file);
364 __poll_t res;
365
366 mutex_lock(vdev->lock);
367 res = __fops_poll(file, wait);
368 mutex_unlock(vdev->lock);
369 return res;
370 }
371
fops_read(struct file * file,char __user * data,size_t count,loff_t * ppos)372 static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
373 {
374 struct video_device *vdev = video_devdata(file);
375 struct saa7146_fh *fh = file->private_data;
376 int ret;
377
378 switch (vdev->vfl_type) {
379 case VFL_TYPE_VIDEO:
380 /*
381 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, data:%p, count:%lun",
382 file, data, (unsigned long)count);
383 */
384 return saa7146_video_uops.read(file,data,count,ppos);
385 case VFL_TYPE_VBI:
386 /*
387 DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, data:%p, count:%lu\n",
388 file, data, (unsigned long)count);
389 */
390 if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE) {
391 if (mutex_lock_interruptible(vdev->lock))
392 return -ERESTARTSYS;
393 ret = saa7146_vbi_uops.read(file, data, count, ppos);
394 mutex_unlock(vdev->lock);
395 return ret;
396 }
397 return -EINVAL;
398 default:
399 BUG();
400 }
401 }
402
fops_write(struct file * file,const char __user * data,size_t count,loff_t * ppos)403 static ssize_t fops_write(struct file *file, const char __user *data, size_t count, loff_t *ppos)
404 {
405 struct video_device *vdev = video_devdata(file);
406 struct saa7146_fh *fh = file->private_data;
407 int ret;
408
409 switch (vdev->vfl_type) {
410 case VFL_TYPE_VIDEO:
411 return -EINVAL;
412 case VFL_TYPE_VBI:
413 if (fh->dev->ext_vv_data->vbi_fops.write) {
414 if (mutex_lock_interruptible(vdev->lock))
415 return -ERESTARTSYS;
416 ret = fh->dev->ext_vv_data->vbi_fops.write(file, data, count, ppos);
417 mutex_unlock(vdev->lock);
418 return ret;
419 }
420 return -EINVAL;
421 default:
422 BUG();
423 }
424 }
425
426 static const struct v4l2_file_operations video_fops =
427 {
428 .owner = THIS_MODULE,
429 .open = fops_open,
430 .release = fops_release,
431 .read = fops_read,
432 .write = fops_write,
433 .poll = fops_poll,
434 .mmap = fops_mmap,
435 .unlocked_ioctl = video_ioctl2,
436 };
437
vv_callback(struct saa7146_dev * dev,unsigned long status)438 static void vv_callback(struct saa7146_dev *dev, unsigned long status)
439 {
440 u32 isr = status;
441
442 DEB_INT("dev:%p, isr:0x%08x\n", dev, (u32)status);
443
444 if (0 != (isr & (MASK_27))) {
445 DEB_INT("irq: RPS0 (0x%08x)\n", isr);
446 saa7146_video_uops.irq_done(dev,isr);
447 }
448
449 if (0 != (isr & (MASK_28))) {
450 u32 mc2 = saa7146_read(dev, MC2);
451 if( 0 != (mc2 & MASK_15)) {
452 DEB_INT("irq: RPS1 vbi workaround (0x%08x)\n", isr);
453 wake_up(&dev->vv_data->vbi_wq);
454 saa7146_write(dev,MC2, MASK_31);
455 return;
456 }
457 DEB_INT("irq: RPS1 (0x%08x)\n", isr);
458 saa7146_vbi_uops.irq_done(dev,isr);
459 }
460 }
461
462 static const struct v4l2_ctrl_ops saa7146_ctrl_ops = {
463 .s_ctrl = saa7146_s_ctrl,
464 };
465
saa7146_vv_init(struct saa7146_dev * dev,struct saa7146_ext_vv * ext_vv)466 int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
467 {
468 struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler;
469 struct v4l2_pix_format *fmt;
470 struct v4l2_vbi_format *vbi;
471 struct saa7146_vv *vv;
472 int err;
473
474 err = v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev);
475 if (err)
476 return err;
477
478 v4l2_ctrl_handler_init(hdl, 6);
479 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
480 V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
481 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
482 V4L2_CID_CONTRAST, 0, 127, 1, 64);
483 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
484 V4L2_CID_SATURATION, 0, 127, 1, 64);
485 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
486 V4L2_CID_VFLIP, 0, 1, 1, 0);
487 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
488 V4L2_CID_HFLIP, 0, 1, 1, 0);
489 if (hdl->error) {
490 err = hdl->error;
491 v4l2_ctrl_handler_free(hdl);
492 return err;
493 }
494 dev->v4l2_dev.ctrl_handler = hdl;
495
496 vv = kzalloc(sizeof(struct saa7146_vv), GFP_KERNEL);
497 if (vv == NULL) {
498 ERR("out of memory. aborting.\n");
499 v4l2_ctrl_handler_free(hdl);
500 return -ENOMEM;
501 }
502 ext_vv->vid_ops = saa7146_video_ioctl_ops;
503 ext_vv->vbi_ops = saa7146_vbi_ioctl_ops;
504 ext_vv->core_ops = &saa7146_video_ioctl_ops;
505
506 DEB_EE("dev:%p\n", dev);
507
508 /* set default values for video parts of the saa7146 */
509 saa7146_write(dev, BCS_CTRL, 0x80400040);
510
511 /* enable video-port pins */
512 saa7146_write(dev, MC1, (MASK_10 | MASK_26));
513
514 /* save per-device extension data (one extension can
515 handle different devices that might need different
516 configuration data) */
517 dev->ext_vv_data = ext_vv;
518
519 vv->d_clipping.cpu_addr =
520 pci_zalloc_consistent(dev->pci, SAA7146_CLIPPING_MEM,
521 &vv->d_clipping.dma_handle);
522 if( NULL == vv->d_clipping.cpu_addr ) {
523 ERR("out of memory. aborting.\n");
524 kfree(vv);
525 v4l2_ctrl_handler_free(hdl);
526 return -ENOMEM;
527 }
528
529 saa7146_video_uops.init(dev,vv);
530 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
531 saa7146_vbi_uops.init(dev,vv);
532
533 vv->ov_fb.fmt.width = vv->standard->h_max_out;
534 vv->ov_fb.fmt.height = vv->standard->v_max_out;
535 vv->ov_fb.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
536 vv->ov_fb.fmt.bytesperline = 2 * vv->ov_fb.fmt.width;
537 vv->ov_fb.fmt.sizeimage = vv->ov_fb.fmt.bytesperline * vv->ov_fb.fmt.height;
538 vv->ov_fb.fmt.colorspace = V4L2_COLORSPACE_SRGB;
539
540 fmt = &vv->video_fmt;
541 fmt->width = 384;
542 fmt->height = 288;
543 fmt->pixelformat = V4L2_PIX_FMT_BGR24;
544 fmt->field = V4L2_FIELD_ANY;
545 fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
546 fmt->bytesperline = 3 * fmt->width;
547 fmt->sizeimage = fmt->bytesperline * fmt->height;
548
549 vbi = &vv->vbi_fmt;
550 vbi->sampling_rate = 27000000;
551 vbi->offset = 248; /* todo */
552 vbi->samples_per_line = 720 * 2;
553 vbi->sample_format = V4L2_PIX_FMT_GREY;
554
555 /* fixme: this only works for PAL */
556 vbi->start[0] = 5;
557 vbi->count[0] = 16;
558 vbi->start[1] = 312;
559 vbi->count[1] = 16;
560
561 timer_setup(&vv->vbi_read_timeout, NULL, 0);
562
563 vv->ov_fb.capability = V4L2_FBUF_CAP_LIST_CLIPPING;
564 vv->ov_fb.flags = V4L2_FBUF_FLAG_PRIMARY;
565 dev->vv_data = vv;
566 dev->vv_callback = &vv_callback;
567
568 return 0;
569 }
570 EXPORT_SYMBOL_GPL(saa7146_vv_init);
571
saa7146_vv_release(struct saa7146_dev * dev)572 int saa7146_vv_release(struct saa7146_dev* dev)
573 {
574 struct saa7146_vv *vv = dev->vv_data;
575
576 DEB_EE("dev:%p\n", dev);
577
578 v4l2_device_unregister(&dev->v4l2_dev);
579 pci_free_consistent(dev->pci, SAA7146_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
580 v4l2_ctrl_handler_free(&dev->ctrl_handler);
581 kfree(vv);
582 dev->vv_data = NULL;
583 dev->vv_callback = NULL;
584
585 return 0;
586 }
587 EXPORT_SYMBOL_GPL(saa7146_vv_release);
588
saa7146_register_device(struct video_device * vfd,struct saa7146_dev * dev,char * name,int type)589 int saa7146_register_device(struct video_device *vfd, struct saa7146_dev *dev,
590 char *name, int type)
591 {
592 int err;
593 int i;
594
595 DEB_EE("dev:%p, name:'%s', type:%d\n", dev, name, type);
596
597 vfd->fops = &video_fops;
598 if (type == VFL_TYPE_VIDEO)
599 vfd->ioctl_ops = &dev->ext_vv_data->vid_ops;
600 else
601 vfd->ioctl_ops = &dev->ext_vv_data->vbi_ops;
602 vfd->release = video_device_release_empty;
603 vfd->lock = &dev->v4l2_lock;
604 vfd->v4l2_dev = &dev->v4l2_dev;
605 vfd->tvnorms = 0;
606 for (i = 0; i < dev->ext_vv_data->num_stds; i++)
607 vfd->tvnorms |= dev->ext_vv_data->stds[i].id;
608 strscpy(vfd->name, name, sizeof(vfd->name));
609 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OVERLAY |
610 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
611 vfd->device_caps |= dev->ext_vv_data->capabilities;
612 if (type == VFL_TYPE_VIDEO)
613 vfd->device_caps &=
614 ~(V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_OUTPUT);
615 else
616 vfd->device_caps &=
617 ~(V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OVERLAY | V4L2_CAP_AUDIO);
618 video_set_drvdata(vfd, dev);
619
620 err = video_register_device(vfd, type, -1);
621 if (err < 0) {
622 ERR("cannot register v4l2 device. skipping.\n");
623 return err;
624 }
625
626 pr_info("%s: registered device %s [v4l2]\n",
627 dev->name, video_device_node_name(vfd));
628 return 0;
629 }
630 EXPORT_SYMBOL_GPL(saa7146_register_device);
631
saa7146_unregister_device(struct video_device * vfd,struct saa7146_dev * dev)632 int saa7146_unregister_device(struct video_device *vfd, struct saa7146_dev *dev)
633 {
634 DEB_EE("dev:%p\n", dev);
635
636 video_unregister_device(vfd);
637 return 0;
638 }
639 EXPORT_SYMBOL_GPL(saa7146_unregister_device);
640
saa7146_vv_init_module(void)641 static int __init saa7146_vv_init_module(void)
642 {
643 return 0;
644 }
645
646
saa7146_vv_cleanup_module(void)647 static void __exit saa7146_vv_cleanup_module(void)
648 {
649 }
650
651 module_init(saa7146_vv_init_module);
652 module_exit(saa7146_vv_cleanup_module);
653
654 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
655 MODULE_DESCRIPTION("video4linux driver for saa7146-based hardware");
656 MODULE_LICENSE("GPL");
657