Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | #include <media/saa7146_vv.h> |
| 2 | #include <linux/version.h> |
| 3 | |
| 4 | #define BOARD_CAN_DO_VBI(dev) (dev->revision != 0 && dev->vv_data->vbi_minor != -1) |
| 5 | |
| 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) { |
| 15 | DEB_D(("already allocated! want: 0x%02x, cur:0x%02x\n",bit,vv->resources)); |
| 16 | /* have it already allocated */ |
| 17 | return 1; |
| 18 | } |
| 19 | |
| 20 | /* is it free? */ |
| 21 | down(&dev->lock); |
| 22 | if (vv->resources & bit) { |
| 23 | DEB_D(("locked! vv->resources:0x%02x, we want:0x%02x\n",vv->resources,bit)); |
| 24 | /* no, someone else uses it */ |
| 25 | up(&dev->lock); |
| 26 | return 0; |
| 27 | } |
| 28 | /* it's free, grab it */ |
| 29 | fh->resources |= bit; |
| 30 | vv->resources |= bit; |
| 31 | DEB_D(("res: get 0x%02x, cur:0x%02x\n",bit,vv->resources)); |
| 32 | up(&dev->lock); |
| 33 | return 1; |
| 34 | } |
| 35 | |
| 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 | if ((fh->resources & bits) != bits) |
| 42 | BUG(); |
| 43 | |
| 44 | down(&dev->lock); |
| 45 | fh->resources &= ~bits; |
| 46 | vv->resources &= ~bits; |
| 47 | DEB_D(("res: put 0x%02x, cur:0x%02x\n",bits,vv->resources)); |
| 48 | up(&dev->lock); |
| 49 | } |
| 50 | |
| 51 | |
| 52 | /********************************************************************************/ |
| 53 | /* common dma functions */ |
| 54 | |
| 55 | void saa7146_dma_free(struct saa7146_dev *dev,struct saa7146_buf *buf) |
| 56 | { |
| 57 | DEB_EE(("dev:%p, buf:%p\n",dev,buf)); |
| 58 | |
| 59 | if (in_interrupt()) |
| 60 | BUG(); |
| 61 | |
| 62 | videobuf_waiton(&buf->vb,0,0); |
| 63 | videobuf_dma_pci_unmap(dev->pci, &buf->vb.dma); |
| 64 | videobuf_dma_free(&buf->vb.dma); |
| 65 | buf->vb.state = STATE_NEEDS_INIT; |
| 66 | } |
| 67 | |
| 68 | |
| 69 | /********************************************************************************/ |
| 70 | /* common buffer functions */ |
| 71 | |
| 72 | int saa7146_buffer_queue(struct saa7146_dev *dev, |
| 73 | struct saa7146_dmaqueue *q, |
| 74 | struct saa7146_buf *buf) |
| 75 | { |
| 76 | assert_spin_locked(&dev->slock); |
| 77 | DEB_EE(("dev:%p, dmaq:%p, buf:%p\n", dev, q, buf)); |
| 78 | |
| 79 | BUG_ON(!q); |
| 80 | |
| 81 | if (NULL == q->curr) { |
| 82 | q->curr = buf; |
| 83 | DEB_D(("immediately activating buffer %p\n", buf)); |
| 84 | buf->activate(dev,buf,NULL); |
| 85 | } else { |
| 86 | list_add_tail(&buf->vb.queue,&q->queue); |
| 87 | buf->vb.state = STATE_QUEUED; |
| 88 | DEB_D(("adding buffer %p to queue. (active buffer present)\n", buf)); |
| 89 | } |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | void saa7146_buffer_finish(struct saa7146_dev *dev, |
| 94 | struct saa7146_dmaqueue *q, |
| 95 | int state) |
| 96 | { |
| 97 | assert_spin_locked(&dev->slock); |
| 98 | DEB_EE(("dev:%p, dmaq:%p, state:%d\n", dev, q, state)); |
| 99 | DEB_EE(("q->curr:%p\n",q->curr)); |
| 100 | |
| 101 | BUG_ON(!q->curr); |
| 102 | |
| 103 | /* finish current buffer */ |
| 104 | if (NULL == q->curr) { |
| 105 | DEB_D(("aiii. no current buffer\n")); |
| 106 | return; |
| 107 | } |
| 108 | |
| 109 | q->curr->vb.state = state; |
| 110 | do_gettimeofday(&q->curr->vb.ts); |
| 111 | wake_up(&q->curr->vb.done); |
| 112 | |
| 113 | q->curr = NULL; |
| 114 | } |
| 115 | |
| 116 | void saa7146_buffer_next(struct saa7146_dev *dev, |
| 117 | struct saa7146_dmaqueue *q, int vbi) |
| 118 | { |
| 119 | struct saa7146_buf *buf,*next = NULL; |
| 120 | |
| 121 | BUG_ON(!q); |
| 122 | |
| 123 | DEB_INT(("dev:%p, dmaq:%p, vbi:%d\n", dev, q, vbi)); |
| 124 | |
| 125 | assert_spin_locked(&dev->slock); |
| 126 | if (!list_empty(&q->queue)) { |
| 127 | /* activate next one from queue */ |
| 128 | buf = list_entry(q->queue.next,struct saa7146_buf,vb.queue); |
| 129 | list_del(&buf->vb.queue); |
| 130 | if (!list_empty(&q->queue)) |
| 131 | next = list_entry(q->queue.next,struct saa7146_buf, vb.queue); |
| 132 | q->curr = buf; |
| 133 | DEB_INT(("next buffer: buf:%p, prev:%p, next:%p\n", buf, q->queue.prev,q->queue.next)); |
| 134 | buf->activate(dev,buf,next); |
| 135 | } else { |
| 136 | DEB_INT(("no next buffer. stopping.\n")); |
| 137 | if( 0 != vbi ) { |
| 138 | /* turn off video-dma3 */ |
| 139 | saa7146_write(dev,MC1, MASK_20); |
| 140 | } else { |
| 141 | /* nothing to do -- just prevent next video-dma1 transfer |
| 142 | by lowering the protection address */ |
| 143 | |
| 144 | // fixme: fix this for vflip != 0 |
| 145 | |
| 146 | saa7146_write(dev, PROT_ADDR1, 0); |
| 147 | saa7146_write(dev, MC2, (MASK_02|MASK_18)); |
| 148 | |
| 149 | /* write the address of the rps-program */ |
| 150 | saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle); |
| 151 | /* turn on rps */ |
| 152 | saa7146_write(dev, MC1, (MASK_12 | MASK_28)); |
| 153 | |
| 154 | /* |
| 155 | printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1)); |
| 156 | printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1)); |
| 157 | printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1)); |
| 158 | printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1)); |
| 159 | printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1)); |
| 160 | printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1)); |
| 161 | */ |
| 162 | } |
| 163 | del_timer(&q->timeout); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | void saa7146_buffer_timeout(unsigned long data) |
| 168 | { |
| 169 | struct saa7146_dmaqueue *q = (struct saa7146_dmaqueue*)data; |
| 170 | struct saa7146_dev *dev = q->dev; |
| 171 | unsigned long flags; |
| 172 | |
| 173 | DEB_EE(("dev:%p, dmaq:%p\n", dev, q)); |
| 174 | |
| 175 | spin_lock_irqsave(&dev->slock,flags); |
| 176 | if (q->curr) { |
| 177 | DEB_D(("timeout on %p\n", q->curr)); |
| 178 | saa7146_buffer_finish(dev,q,STATE_ERROR); |
| 179 | } |
| 180 | |
| 181 | /* we don't restart the transfer here like other drivers do. when |
| 182 | a streaming capture is disabled, the timeout function will be |
| 183 | called for the current buffer. if we activate the next buffer now, |
| 184 | we mess up our capture logic. if a timeout occurs on another buffer, |
| 185 | then something is seriously broken before, so no need to buffer the |
| 186 | next capture IMHO... */ |
| 187 | /* |
| 188 | saa7146_buffer_next(dev,q); |
| 189 | */ |
| 190 | spin_unlock_irqrestore(&dev->slock,flags); |
| 191 | } |
| 192 | |
| 193 | /********************************************************************************/ |
| 194 | /* file operations */ |
| 195 | |
| 196 | static int fops_open(struct inode *inode, struct file *file) |
| 197 | { |
| 198 | unsigned int minor = iminor(inode); |
| 199 | struct saa7146_dev *h = NULL, *dev = NULL; |
| 200 | struct list_head *list; |
| 201 | struct saa7146_fh *fh = NULL; |
| 202 | int result = 0; |
| 203 | |
| 204 | enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 205 | |
| 206 | DEB_EE(("inode:%p, file:%p, minor:%d\n",inode,file,minor)); |
| 207 | |
| 208 | if (down_interruptible(&saa7146_devices_lock)) |
| 209 | return -ERESTARTSYS; |
| 210 | |
| 211 | list_for_each(list,&saa7146_devices) { |
| 212 | h = list_entry(list, struct saa7146_dev, item); |
| 213 | if( NULL == h->vv_data ) { |
| 214 | DEB_D(("device %p has not registered video devices.\n",h)); |
| 215 | continue; |
| 216 | } |
| 217 | DEB_D(("trying: %p @ major %d,%d\n",h,h->vv_data->video_minor,h->vv_data->vbi_minor)); |
| 218 | |
| 219 | if (h->vv_data->video_minor == minor) { |
| 220 | dev = h; |
| 221 | } |
| 222 | if (h->vv_data->vbi_minor == minor) { |
| 223 | type = V4L2_BUF_TYPE_VBI_CAPTURE; |
| 224 | dev = h; |
| 225 | } |
| 226 | } |
| 227 | if (NULL == dev) { |
| 228 | DEB_S(("no such video device.\n")); |
| 229 | result = -ENODEV; |
| 230 | goto out; |
| 231 | } |
| 232 | |
| 233 | DEB_D(("using: %p\n",dev)); |
| 234 | |
| 235 | /* check if an extension is registered */ |
| 236 | if( NULL == dev->ext ) { |
| 237 | DEB_S(("no extension registered for this device.\n")); |
| 238 | result = -ENODEV; |
| 239 | goto out; |
| 240 | } |
| 241 | |
| 242 | /* allocate per open data */ |
| 243 | fh = kmalloc(sizeof(*fh),GFP_KERNEL); |
| 244 | if (NULL == fh) { |
| 245 | DEB_S(("cannot allocate memory for per open data.\n")); |
| 246 | result = -ENOMEM; |
| 247 | goto out; |
| 248 | } |
| 249 | memset(fh,0,sizeof(*fh)); |
| 250 | |
| 251 | file->private_data = fh; |
| 252 | fh->dev = dev; |
| 253 | fh->type = type; |
| 254 | |
| 255 | if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { |
| 256 | DEB_S(("initializing vbi...\n")); |
| 257 | result = saa7146_vbi_uops.open(dev,file); |
| 258 | } else { |
| 259 | DEB_S(("initializing video...\n")); |
| 260 | result = saa7146_video_uops.open(dev,file); |
| 261 | } |
| 262 | |
| 263 | if (0 != result) { |
| 264 | goto out; |
| 265 | } |
| 266 | |
| 267 | if( 0 == try_module_get(dev->ext->module)) { |
| 268 | result = -EINVAL; |
| 269 | goto out; |
| 270 | } |
| 271 | |
| 272 | result = 0; |
| 273 | out: |
| 274 | if( fh != 0 && result != 0 ) { |
| 275 | kfree(fh); |
| 276 | file->private_data = NULL; |
| 277 | } |
| 278 | up(&saa7146_devices_lock); |
| 279 | return result; |
| 280 | } |
| 281 | |
| 282 | static int fops_release(struct inode *inode, struct file *file) |
| 283 | { |
| 284 | struct saa7146_fh *fh = file->private_data; |
| 285 | struct saa7146_dev *dev = fh->dev; |
| 286 | |
| 287 | DEB_EE(("inode:%p, file:%p\n",inode,file)); |
| 288 | |
| 289 | if (down_interruptible(&saa7146_devices_lock)) |
| 290 | return -ERESTARTSYS; |
| 291 | |
| 292 | if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { |
| 293 | saa7146_vbi_uops.release(dev,file); |
| 294 | } else { |
| 295 | saa7146_video_uops.release(dev,file); |
| 296 | } |
| 297 | |
| 298 | module_put(dev->ext->module); |
| 299 | file->private_data = NULL; |
| 300 | kfree(fh); |
| 301 | |
| 302 | up(&saa7146_devices_lock); |
| 303 | |
| 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | int saa7146_video_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg); |
| 308 | static int fops_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) |
| 309 | { |
| 310 | /* |
| 311 | DEB_EE(("inode:%p, file:%p, cmd:%d, arg:%li\n",inode, file, cmd, arg)); |
| 312 | */ |
| 313 | return video_usercopy(inode, file, cmd, arg, saa7146_video_do_ioctl); |
| 314 | } |
| 315 | |
| 316 | static int fops_mmap(struct file *file, struct vm_area_struct * vma) |
| 317 | { |
| 318 | struct saa7146_fh *fh = file->private_data; |
| 319 | struct videobuf_queue *q; |
| 320 | |
| 321 | switch (fh->type) { |
| 322 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: { |
| 323 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n",file, vma)); |
| 324 | q = &fh->video_q; |
| 325 | break; |
| 326 | } |
| 327 | case V4L2_BUF_TYPE_VBI_CAPTURE: { |
| 328 | DEB_EE(("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n",file, vma)); |
| 329 | q = &fh->vbi_q; |
| 330 | break; |
| 331 | } |
| 332 | default: |
| 333 | BUG(); |
| 334 | return 0; |
| 335 | } |
| 336 | return videobuf_mmap_mapper(q,vma); |
| 337 | } |
| 338 | |
| 339 | static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait) |
| 340 | { |
| 341 | struct saa7146_fh *fh = file->private_data; |
| 342 | struct videobuf_buffer *buf = NULL; |
| 343 | struct videobuf_queue *q; |
| 344 | |
| 345 | DEB_EE(("file:%p, poll:%p\n",file, wait)); |
| 346 | |
| 347 | if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) { |
| 348 | if( 0 == fh->vbi_q.streaming ) |
| 349 | return videobuf_poll_stream(file, &fh->vbi_q, wait); |
| 350 | q = &fh->vbi_q; |
| 351 | } else { |
| 352 | DEB_D(("using video queue.\n")); |
| 353 | q = &fh->video_q; |
| 354 | } |
| 355 | |
| 356 | if (!list_empty(&q->stream)) |
| 357 | buf = list_entry(q->stream.next, struct videobuf_buffer, stream); |
| 358 | |
| 359 | if (!buf) { |
| 360 | DEB_D(("buf == NULL!\n")); |
| 361 | return POLLERR; |
| 362 | } |
| 363 | |
| 364 | poll_wait(file, &buf->done, wait); |
| 365 | if (buf->state == STATE_DONE || buf->state == STATE_ERROR) { |
| 366 | DEB_D(("poll succeeded!\n")); |
| 367 | return POLLIN|POLLRDNORM; |
| 368 | } |
| 369 | |
| 370 | DEB_D(("nothing to poll for, buf->state:%d\n",buf->state)); |
| 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos) |
| 375 | { |
| 376 | struct saa7146_fh *fh = file->private_data; |
| 377 | |
| 378 | switch (fh->type) { |
| 379 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: { |
| 380 | // DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, data:%p, count:%lun", file, data, (unsigned long)count)); |
| 381 | return saa7146_video_uops.read(file,data,count,ppos); |
| 382 | } |
| 383 | case V4L2_BUF_TYPE_VBI_CAPTURE: { |
| 384 | // DEB_EE(("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, data:%p, count:%lu\n", file, data, (unsigned long)count)); |
| 385 | return saa7146_vbi_uops.read(file,data,count,ppos); |
| 386 | } |
| 387 | break; |
| 388 | default: |
| 389 | BUG(); |
| 390 | return 0; |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | static struct file_operations video_fops = |
| 395 | { |
| 396 | .owner = THIS_MODULE, |
| 397 | .open = fops_open, |
| 398 | .release = fops_release, |
| 399 | .read = fops_read, |
| 400 | .poll = fops_poll, |
| 401 | .mmap = fops_mmap, |
| 402 | .ioctl = fops_ioctl, |
| 403 | .llseek = no_llseek, |
| 404 | }; |
| 405 | |
| 406 | void vv_callback(struct saa7146_dev *dev, unsigned long status) |
| 407 | { |
| 408 | u32 isr = status; |
| 409 | |
| 410 | DEB_INT(("dev:%p, isr:0x%08x\n",dev,(u32)status)); |
| 411 | |
| 412 | if (0 != (isr & (MASK_27))) { |
| 413 | DEB_INT(("irq: RPS0 (0x%08x).\n",isr)); |
| 414 | saa7146_video_uops.irq_done(dev,isr); |
| 415 | } |
| 416 | |
| 417 | if (0 != (isr & (MASK_28))) { |
| 418 | u32 mc2 = saa7146_read(dev, MC2); |
| 419 | if( 0 != (mc2 & MASK_15)) { |
| 420 | DEB_INT(("irq: RPS1 vbi workaround (0x%08x).\n",isr)); |
| 421 | wake_up(&dev->vv_data->vbi_wq); |
| 422 | saa7146_write(dev,MC2, MASK_31); |
| 423 | return; |
| 424 | } |
| 425 | DEB_INT(("irq: RPS1 (0x%08x).\n",isr)); |
| 426 | saa7146_vbi_uops.irq_done(dev,isr); |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | static struct video_device device_template = |
| 431 | { |
| 432 | .hardware = VID_HARDWARE_SAA7146, |
| 433 | .fops = &video_fops, |
| 434 | .minor = -1, |
| 435 | }; |
| 436 | |
| 437 | int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv) |
| 438 | { |
| 439 | struct saa7146_vv *vv = kmalloc (sizeof(struct saa7146_vv),GFP_KERNEL); |
| 440 | if( NULL == vv ) { |
| 441 | ERR(("out of memory. aborting.\n")); |
| 442 | return -1; |
| 443 | } |
| 444 | memset(vv, 0x0, sizeof(*vv)); |
| 445 | |
| 446 | DEB_EE(("dev:%p\n",dev)); |
| 447 | |
| 448 | /* set default values for video parts of the saa7146 */ |
| 449 | saa7146_write(dev, BCS_CTRL, 0x80400040); |
| 450 | |
| 451 | /* enable video-port pins */ |
| 452 | saa7146_write(dev, MC1, (MASK_10 | MASK_26)); |
| 453 | |
| 454 | /* save per-device extension data (one extension can |
| 455 | handle different devices that might need different |
| 456 | configuration data) */ |
| 457 | dev->ext_vv_data = ext_vv; |
| 458 | |
| 459 | vv->video_minor = -1; |
| 460 | vv->vbi_minor = -1; |
| 461 | |
| 462 | vv->d_clipping.cpu_addr = pci_alloc_consistent(dev->pci, SAA7146_CLIPPING_MEM, &vv->d_clipping.dma_handle); |
| 463 | if( NULL == vv->d_clipping.cpu_addr ) { |
| 464 | ERR(("out of memory. aborting.\n")); |
| 465 | kfree(vv); |
| 466 | return -1; |
| 467 | } |
| 468 | memset(vv->d_clipping.cpu_addr, 0x0, SAA7146_CLIPPING_MEM); |
| 469 | |
| 470 | saa7146_video_uops.init(dev,vv); |
| 471 | saa7146_vbi_uops.init(dev,vv); |
| 472 | |
| 473 | dev->vv_data = vv; |
| 474 | dev->vv_callback = &vv_callback; |
| 475 | |
| 476 | return 0; |
| 477 | } |
| 478 | |
| 479 | int saa7146_vv_release(struct saa7146_dev* dev) |
| 480 | { |
| 481 | struct saa7146_vv *vv = dev->vv_data; |
| 482 | |
| 483 | DEB_EE(("dev:%p\n",dev)); |
| 484 | |
| 485 | pci_free_consistent(dev->pci, SAA7146_RPS_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle); |
| 486 | kfree(vv); |
| 487 | dev->vv_data = NULL; |
| 488 | dev->vv_callback = NULL; |
| 489 | |
| 490 | return 0; |
| 491 | } |
| 492 | |
| 493 | int saa7146_register_device(struct video_device **vid, struct saa7146_dev* dev, |
| 494 | char *name, int type) |
| 495 | { |
| 496 | struct saa7146_vv *vv = dev->vv_data; |
| 497 | struct video_device *vfd; |
| 498 | |
| 499 | DEB_EE(("dev:%p, name:'%s', type:%d\n",dev,name,type)); |
| 500 | |
| 501 | // released by vfd->release |
| 502 | vfd = video_device_alloc(); |
| 503 | if (vfd == NULL) |
| 504 | return -ENOMEM; |
| 505 | |
| 506 | memcpy(vfd, &device_template, sizeof(struct video_device)); |
| 507 | strlcpy(vfd->name, name, sizeof(vfd->name)); |
| 508 | vfd->release = video_device_release; |
| 509 | vfd->priv = dev; |
| 510 | |
| 511 | // fixme: -1 should be an insmod parameter *for the extension* (like "video_nr"); |
| 512 | if (video_register_device(vfd, type, -1) < 0) { |
| 513 | ERR(("cannot register v4l2 device. skipping.\n")); |
| 514 | return -1; |
| 515 | } |
| 516 | |
| 517 | if( VFL_TYPE_GRABBER == type ) { |
| 518 | vv->video_minor = vfd->minor; |
| 519 | INFO(("%s: registered device video%d [v4l2]\n", |
| 520 | dev->name, vfd->minor & 0x1f)); |
| 521 | } else { |
| 522 | vv->vbi_minor = vfd->minor; |
| 523 | INFO(("%s: registered device vbi%d [v4l2]\n", |
| 524 | dev->name, vfd->minor & 0x1f)); |
| 525 | } |
| 526 | |
| 527 | *vid = vfd; |
| 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | int saa7146_unregister_device(struct video_device **vid, struct saa7146_dev* dev) |
| 532 | { |
| 533 | struct saa7146_vv *vv = dev->vv_data; |
| 534 | |
| 535 | DEB_EE(("dev:%p\n",dev)); |
| 536 | |
| 537 | if( VFL_TYPE_GRABBER == (*vid)->type ) { |
| 538 | vv->video_minor = -1; |
| 539 | } else { |
| 540 | vv->vbi_minor = -1; |
| 541 | } |
| 542 | |
| 543 | video_unregister_device(*vid); |
| 544 | *vid = NULL; |
| 545 | |
| 546 | return 0; |
| 547 | } |
| 548 | |
| 549 | static int __init saa7146_vv_init_module(void) |
| 550 | { |
| 551 | return 0; |
| 552 | } |
| 553 | |
| 554 | |
| 555 | static void __exit saa7146_vv_cleanup_module(void) |
| 556 | { |
| 557 | } |
| 558 | |
| 559 | module_init(saa7146_vv_init_module); |
| 560 | module_exit(saa7146_vv_cleanup_module); |
| 561 | |
| 562 | MODULE_AUTHOR("Michael Hunold <michael@mihu.de>"); |
| 563 | MODULE_DESCRIPTION("video4linux driver for saa7146-based hardware"); |
| 564 | MODULE_LICENSE("GPL"); |