drivers/staging/media/solo6x10/v4l2.c

   1 /*
   2  * Copyright (C) 2010-2013 Bluecherry, LLC <http://www.bluecherrydvr.com>
   3  *
   4  * Original author:
   5  * Ben Collins <bcollins@ubuntu.com>
   6  *
   7  * Additional work by:
   8  * John Brooks <john.brooks@bluecherry.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  */
  24
  25 #include <linux/kernel.h>
  26 #include <linux/module.h>
  27 #include <linux/kthread.h>
  28 #include <linux/freezer.h>
  29
  30 #include <media/v4l2-ioctl.h>
  31 #include <media/v4l2-common.h>
  32 #include <media/v4l2-event.h>
  33 #include <media/videobuf-dma-contig.h>
  34
  35 #include "solo6x10.h"
  36 #include "tw28.h"
  37
  38 /* Image size is two fields, SOLO_HW_BPL is one horizontal line in hardware */
  39 #define SOLO_HW_BPL             2048
  40 #define solo_vlines(__solo)     (__solo->video_vsize * 2)
  41 #define solo_image_size(__solo) (solo_bytesperline(__solo) * \
  42                                  solo_vlines(__solo))
  43 #define solo_bytesperline(__solo) (__solo->video_hsize * 2)
  44
  45 #define MIN_VID_BUFFERS         2
  46
  47 static inline void erase_on(struct solo_dev *solo_dev)
  48 {
  49         solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, SOLO_VO_DISP_ERASE_ON);
  50         solo_dev->erasing = 1;
  51         solo_dev->frame_blank = 0;
  52 }
  53
  54 static inline int erase_off(struct solo_dev *solo_dev)
  55 {
  56         if (!solo_dev->erasing)
  57                 return 0;
  58
  59         /* First time around, assert erase off */
  60         if (!solo_dev->frame_blank)
  61                 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, 0);
  62         /* Keep the erasing flag on for 8 frames minimum */
  63         if (solo_dev->frame_blank++ >= 8)
  64                 solo_dev->erasing = 0;
  65
  66         return 1;
  67 }
  68
  69 void solo_video_in_isr(struct solo_dev *solo_dev)
  70 {
  71         wake_up_interruptible_all(&solo_dev->disp_thread_wait);
  72 }
  73
  74 static void solo_win_setup(struct solo_dev *solo_dev, u8 ch,
  75                            int sx, int sy, int ex, int ey, int scale)
  76 {
  77         if (ch >= solo_dev->nr_chans)
  78                 return;
  79
  80         /* Here, we just keep window/channel the same */
  81         solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL0(ch),
  82                        SOLO_VI_WIN_CHANNEL(ch) |
  83                        SOLO_VI_WIN_SX(sx) |
  84                        SOLO_VI_WIN_EX(ex) |
  85                        SOLO_VI_WIN_SCALE(scale));
  86
  87         solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch),
  88                        SOLO_VI_WIN_SY(sy) |
  89                        SOLO_VI_WIN_EY(ey));
  90 }
  91
  92 static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on)
  93 {
  94         u8 ch = idx * 4;
  95
  96         if (ch >= solo_dev->nr_chans)
  97                 return -EINVAL;
  98
  99         if (!on) {
 100                 u8 i;
 101                 for (i = ch; i < ch + 4; i++)
 102                         solo_win_setup(solo_dev, i, solo_dev->video_hsize,
 103                                        solo_vlines(solo_dev),
 104                                        solo_dev->video_hsize,
 105                                        solo_vlines(solo_dev), 0);
 106                 return 0;
 107         }
 108
 109         /* Row 1 */
 110         solo_win_setup(solo_dev, ch, 0, 0, solo_dev->video_hsize / 2,
 111                        solo_vlines(solo_dev) / 2, 3);
 112         solo_win_setup(solo_dev, ch + 1, solo_dev->video_hsize / 2, 0,
 113                        solo_dev->video_hsize, solo_vlines(solo_dev) / 2, 3);
 114         /* Row 2 */
 115         solo_win_setup(solo_dev, ch + 2, 0, solo_vlines(solo_dev) / 2,
 116                        solo_dev->video_hsize / 2, solo_vlines(solo_dev), 3);
 117         solo_win_setup(solo_dev, ch + 3, solo_dev->video_hsize / 2,
 118                        solo_vlines(solo_dev) / 2, solo_dev->video_hsize,
 119                        solo_vlines(solo_dev), 3);
 120
 121         return 0;
 122 }
 123
 124 static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on)
 125 {
 126         int sy, ysize, hsize, i;
 127
 128         if (!on) {
 129                 for (i = 0; i < 16; i++)
 130                         solo_win_setup(solo_dev, i, solo_dev->video_hsize,
 131                                        solo_vlines(solo_dev),
 132                                        solo_dev->video_hsize,
 133                                        solo_vlines(solo_dev), 0);
 134                 return 0;
 135         }
 136
 137         ysize = solo_vlines(solo_dev) / 4;
 138         hsize = solo_dev->video_hsize / 4;
 139
 140         for (sy = 0, i = 0; i < 4; i++, sy += ysize) {
 141                 solo_win_setup(solo_dev, i * 4, 0, sy, hsize,
 142                                sy + ysize, 5);
 143                 solo_win_setup(solo_dev, (i * 4) + 1, hsize, sy,
 144                                hsize * 2, sy + ysize, 5);
 145                 solo_win_setup(solo_dev, (i * 4) + 2, hsize * 2, sy,
 146                                hsize * 3, sy + ysize, 5);
 147                 solo_win_setup(solo_dev, (i * 4) + 3, hsize * 3, sy,
 148                                solo_dev->video_hsize, sy + ysize, 5);
 149         }
 150
 151         return 0;
 152 }
 153
 154 static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on)
 155 {
 156         u8 ext_ch;
 157
 158         if (ch < solo_dev->nr_chans) {
 159                 solo_win_setup(solo_dev, ch, on ? 0 : solo_dev->video_hsize,
 160                                on ? 0 : solo_vlines(solo_dev),
 161                                solo_dev->video_hsize, solo_vlines(solo_dev),
 162                                on ? 1 : 0);
 163                 return 0;
 164         }
 165
 166         if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
 167                 return -EINVAL;
 168
 169         ext_ch = ch - solo_dev->nr_chans;
 170
 171         /* 4up's first */
 172         if (ext_ch < 4)
 173                 return solo_v4l2_ch_ext_4up(solo_dev, ext_ch, on);
 174
 175         /* Remaining case is 16up for 16-port */
 176         return solo_v4l2_ch_ext_16up(solo_dev, on);
 177 }
 178
 179 static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch)
 180 {
 181         if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
 182                 return -EINVAL;
 183
 184         erase_on(solo_dev);
 185
 186         solo_v4l2_ch(solo_dev, solo_dev->cur_disp_ch, 0);
 187         solo_v4l2_ch(solo_dev, ch, 1);
 188
 189         solo_dev->cur_disp_ch = ch;
 190
 191         return 0;
 192 }
 193
 194 static void solo_fillbuf(struct solo_dev *solo_dev,
 195                          struct videobuf_buffer *vb)
 196 {
 197         dma_addr_t vbuf;
 198         unsigned int fdma_addr;
 199         int error = -1;
 200         int i;
 201
 202         vbuf = videobuf_to_dma_contig(vb);
 203         if (!vbuf)
 204                 goto finish_buf;
 205
 206         if (erase_off(solo_dev)) {
 207                 void *p = videobuf_queue_to_vaddr(&solo_dev->vidq, vb);
 208                 int image_size = solo_image_size(solo_dev);
 209                 for (i = 0; i < image_size; i += 2) {
 210                         ((u8 *)p)[i] = 0x80;
 211                         ((u8 *)p)[i + 1] = 0x00;
 212                 }
 213                 error = 0;
 214         } else {
 215                 fdma_addr = SOLO_DISP_EXT_ADDR + (solo_dev->old_write *
 216                                 (SOLO_HW_BPL * solo_vlines(solo_dev)));
 217
 218                 error = solo_p2m_dma_t(solo_dev, 0, vbuf, fdma_addr,
 219                                        solo_bytesperline(solo_dev),
 220                                        solo_vlines(solo_dev), SOLO_HW_BPL);
 221         }
 222
 223 finish_buf:
 224         if (error) {
 225                 vb->state = VIDEOBUF_ERROR;
 226         } else {
 227                 vb->state = VIDEOBUF_DONE;
 228                 vb->field_count++;
 229         }
 230
 231         wake_up(&vb->done);
 232 }
 233
 234 static void solo_thread_try(struct solo_dev *solo_dev)
 235 {
 236         struct videobuf_buffer *vb;
 237
 238         /* Only "break" from this loop if slock is held, otherwise
 239          * just return. */
 240         for (;;) {
 241                 unsigned int cur_write;
 242
 243                 cur_write = SOLO_VI_STATUS0_PAGE(
 244                         solo_reg_read(solo_dev, SOLO_VI_STATUS0));
 245                 if (cur_write == solo_dev->old_write)
 246                         return;
 247
 248                 spin_lock(&solo_dev->slock);
 249
 250                 if (list_empty(&solo_dev->vidq_active))
 251                         break;
 252
 253                 vb = list_first_entry(&solo_dev->vidq_active, struct videobuf_buffer,
 254                                       queue);
 255
 256                 if (!waitqueue_active(&vb->done))
 257                         break;
 258
 259                 solo_dev->old_write = cur_write;
 260                 list_del(&vb->queue);
 261                 vb->state = VIDEOBUF_ACTIVE;
 262
 263                 spin_unlock(&solo_dev->slock);
 264
 265                 solo_fillbuf(solo_dev, vb);
 266         }
 267
 268         assert_spin_locked(&solo_dev->slock);
 269         spin_unlock(&solo_dev->slock);
 270 }
 271
 272 static int solo_thread(void *data)
 273 {
 274         struct solo_dev *solo_dev = data;
 275         DECLARE_WAITQUEUE(wait, current);
 276
 277         set_freezable();
 278         add_wait_queue(&solo_dev->disp_thread_wait, &wait);
 279
 280         for (;;) {
 281                 long timeout = schedule_timeout_interruptible(HZ);
 282                 if (timeout == -ERESTARTSYS || kthread_should_stop())
 283                         break;
 284                 solo_thread_try(solo_dev);
 285                 try_to_freeze();
 286         }
 287
 288         remove_wait_queue(&solo_dev->disp_thread_wait, &wait);
 289
 290         return 0;
 291 }
 292
 293 static int solo_start_thread(struct solo_dev *solo_dev)
 294 {
 295         int ret = 0;
 296
 297         if (atomic_inc_return(&solo_dev->disp_users) == 1)
 298                 solo_irq_on(solo_dev, SOLO_IRQ_VIDEO_IN);
 299
 300         solo_dev->kthread = kthread_run(solo_thread, solo_dev, SOLO6X10_NAME "_disp");
 301
 302         if (IS_ERR(solo_dev->kthread)) {
 303                 ret = PTR_ERR(solo_dev->kthread);
 304                 solo_dev->kthread = NULL;
 305         }
 306
 307         return ret;
 308 }
 309
 310 static void solo_stop_thread(struct solo_dev *solo_dev)
 311 {
 312         if (!solo_dev->kthread)
 313                 return;
 314
 315         kthread_stop(solo_dev->kthread);
 316         solo_dev->kthread = NULL;
 317
 318         if (atomic_dec_return(&solo_dev->disp_users) == 0)
 319                 solo_irq_off(solo_dev, SOLO_IRQ_VIDEO_IN);
 320 }
 321
 322 static int solo_buf_setup(struct videobuf_queue *vq, unsigned int *count,
 323                           unsigned int *size)
 324 {
 325         struct solo_dev *solo_dev = vq->priv_data;
 326
 327         *size = solo_image_size(solo_dev);
 328
 329         if (*count < MIN_VID_BUFFERS)
 330                 *count = MIN_VID_BUFFERS;
 331
 332         return 0;
 333 }
 334
 335 static int solo_buf_prepare(struct videobuf_queue *vq,
 336                             struct videobuf_buffer *vb, enum v4l2_field field)
 337 {
 338         struct solo_dev *solo_dev = vq->priv_data;
 339
 340         vb->size = solo_image_size(solo_dev);
 341         if (vb->baddr != 0 && vb->bsize < vb->size)
 342                 return -EINVAL;
 343
 344         /* XXX: These properties only change when queue is idle */
 345         vb->width  = solo_dev->video_hsize;
 346         vb->height = solo_vlines(solo_dev);
 347         vb->bytesperline = solo_bytesperline(solo_dev);
 348         vb->field  = field;
 349
 350         if (vb->state == VIDEOBUF_NEEDS_INIT) {
 351                 int rc = videobuf_iolock(vq, vb, NULL);
 352                 if (rc < 0) {
 353                         videobuf_dma_contig_free(vq, vb);
 354                         vb->state = VIDEOBUF_NEEDS_INIT;
 355                         return rc;
 356                 }
 357         }
 358         vb->state = VIDEOBUF_PREPARED;
 359
 360         return 0;
 361 }
 362
 363 static void solo_buf_queue(struct videobuf_queue *vq,
 364                            struct videobuf_buffer *vb)
 365 {
 366         struct solo_dev *solo_dev = vq->priv_data;
 367
 368         vb->state = VIDEOBUF_QUEUED;
 369         list_add_tail(&vb->queue, &solo_dev->vidq_active);
 370         wake_up_interruptible(&solo_dev->disp_thread_wait);
 371 }
 372
 373 static void solo_buf_release(struct videobuf_queue *vq,
 374                              struct videobuf_buffer *vb)
 375 {
 376         videobuf_dma_contig_free(vq, vb);
 377         vb->state = VIDEOBUF_NEEDS_INIT;
 378 }
 379
 380 static const struct videobuf_queue_ops solo_video_qops = {
 381         .buf_setup      = solo_buf_setup,
 382         .buf_prepare    = solo_buf_prepare,
 383         .buf_queue      = solo_buf_queue,
 384         .buf_release    = solo_buf_release,
 385 };
 386
 387 static unsigned int solo_v4l2_poll(struct file *file,
 388                                    struct poll_table_struct *wait)
 389 {
 390         struct solo_dev *solo_dev = video_drvdata(file);
 391         unsigned long req_events = poll_requested_events(wait);
 392         unsigned res = v4l2_ctrl_poll(file, wait);
 393
 394         if (!(req_events & (POLLIN | POLLRDNORM)))
 395                 return res;
 396         return res | videobuf_poll_stream(file, &solo_dev->vidq, wait);
 397 }
 398
 399 static int solo_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
 400 {
 401         struct solo_dev *solo_dev = video_drvdata(file);
 402
 403         return videobuf_mmap_mapper(&solo_dev->vidq, vma);
 404 }
 405
 406 static ssize_t solo_v4l2_read(struct file *file, char __user *data,
 407                               size_t count, loff_t *ppos)
 408 {
 409         struct solo_dev *solo_dev = video_drvdata(file);
 410
 411         return videobuf_read_stream(&solo_dev->vidq, data, count, ppos, 0,
 412                                     file->f_flags & O_NONBLOCK);
 413 }
 414
 415 static int solo_v4l2_release(struct file *file)
 416 {
 417         struct solo_dev *solo_dev = video_drvdata(file);
 418
 419         solo_stop_thread(solo_dev);
 420         videobuf_stop(&solo_dev->vidq);
 421         videobuf_mmap_free(&solo_dev->vidq);
 422         return v4l2_fh_release(file);
 423 }
 424
 425 static int solo_querycap(struct file *file, void  *priv,
 426                          struct v4l2_capability *cap)
 427 {
 428         struct solo_dev *solo_dev = video_drvdata(file);
 429
 430         strcpy(cap->driver, SOLO6X10_NAME);
 431         strcpy(cap->card, "Softlogic 6x10");
 432         snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
 433                  pci_name(solo_dev->pdev));
 434         cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
 435                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
 436         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 437         return 0;
 438 }
 439
 440 static int solo_enum_ext_input(struct solo_dev *solo_dev,
 441                                struct v4l2_input *input)
 442 {
 443         static const char * const dispnames_1[] = { "4UP" };
 444         static const char * const dispnames_2[] = { "4UP-1", "4UP-2" };
 445         static const char * const dispnames_5[] = {
 446                 "4UP-1", "4UP-2", "4UP-3", "4UP-4", "16UP"
 447         };
 448         const char * const *dispnames;
 449
 450         if (input->index >= (solo_dev->nr_chans + solo_dev->nr_ext))
 451                 return -EINVAL;
 452
 453         if (solo_dev->nr_ext == 5)
 454                 dispnames = dispnames_5;
 455         else if (solo_dev->nr_ext == 2)
 456                 dispnames = dispnames_2;
 457         else
 458                 dispnames = dispnames_1;
 459
 460         snprintf(input->name, sizeof(input->name), "Multi %s",
 461                  dispnames[input->index - solo_dev->nr_chans]);
 462
 463         return 0;
 464 }
 465
 466 static int solo_enum_input(struct file *file, void *priv,
 467                            struct v4l2_input *input)
 468 {
 469         struct solo_dev *solo_dev = video_drvdata(file);
 470
 471         if (input->index >= solo_dev->nr_chans) {
 472                 int ret = solo_enum_ext_input(solo_dev, input);
 473                 if (ret < 0)
 474                         return ret;
 475         } else {
 476                 snprintf(input->name, sizeof(input->name), "Camera %d",
 477                          input->index + 1);
 478
 479                 /* We can only check this for normal inputs */
 480                 if (!tw28_get_video_status(solo_dev, input->index))
 481                         input->status = V4L2_IN_ST_NO_SIGNAL;
 482         }
 483
 484         input->type = V4L2_INPUT_TYPE_CAMERA;
 485
 486         if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
 487                 input->std = V4L2_STD_NTSC_M;
 488         else
 489                 input->std = V4L2_STD_PAL_B;
 490
 491         return 0;
 492 }
 493
 494 static int solo_set_input(struct file *file, void *priv, unsigned int index)
 495 {
 496         struct solo_dev *solo_dev = video_drvdata(file);
 497         int ret = solo_v4l2_set_ch(solo_dev, index);
 498
 499         if (!ret) {
 500                 while (erase_off(solo_dev))
 501                         /* Do nothing */;
 502         }
 503
 504         return ret;
 505 }
 506
 507 static int solo_get_input(struct file *file, void *priv, unsigned int *index)
 508 {
 509         struct solo_dev *solo_dev = video_drvdata(file);
 510
 511         *index = solo_dev->cur_disp_ch;
 512
 513         return 0;
 514 }
 515
 516 static int solo_enum_fmt_cap(struct file *file, void *priv,
 517                              struct v4l2_fmtdesc *f)
 518 {
 519         if (f->index)
 520                 return -EINVAL;
 521
 522         f->pixelformat = V4L2_PIX_FMT_UYVY;
 523         strlcpy(f->description, "UYUV 4:2:2 Packed", sizeof(f->description));
 524
 525         return 0;
 526 }
 527
 528 static int solo_try_fmt_cap(struct file *file, void *priv,
 529                             struct v4l2_format *f)
 530 {
 531         struct solo_dev *solo_dev = video_drvdata(file);
 532         struct v4l2_pix_format *pix = &f->fmt.pix;
 533         int image_size = solo_image_size(solo_dev);
 534
 535         if (pix->pixelformat != V4L2_PIX_FMT_UYVY)
 536                 return -EINVAL;
 537
 538         pix->width = solo_dev->video_hsize;
 539         pix->height = solo_vlines(solo_dev);
 540         pix->sizeimage = image_size;
 541         pix->field = V4L2_FIELD_INTERLACED;
 542         pix->pixelformat = V4L2_PIX_FMT_UYVY;
 543         pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
 544         pix->priv = 0;
 545         return 0;
 546 }
 547
 548 static int solo_set_fmt_cap(struct file *file, void *priv,
 549                             struct v4l2_format *f)
 550 {
 551         struct solo_dev *solo_dev = video_drvdata(file);
 552
 553         if (videobuf_queue_is_busy(&solo_dev->vidq))
 554                 return -EBUSY;
 555
 556         /* For right now, if it doesn't match our running config,
 557          * then fail */
 558         return solo_try_fmt_cap(file, priv, f);
 559 }
 560
 561 static int solo_get_fmt_cap(struct file *file, void *priv,
 562                             struct v4l2_format *f)
 563 {
 564         struct solo_dev *solo_dev = video_drvdata(file);
 565         struct v4l2_pix_format *pix = &f->fmt.pix;
 566
 567         pix->width = solo_dev->video_hsize;
 568         pix->height = solo_vlines(solo_dev);
 569         pix->pixelformat = V4L2_PIX_FMT_UYVY;
 570         pix->field = V4L2_FIELD_INTERLACED;
 571         pix->sizeimage = solo_image_size(solo_dev);
 572         pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
 573         pix->bytesperline = solo_bytesperline(solo_dev);
 574         pix->priv = 0;
 575
 576         return 0;
 577 }
 578
 579 static int solo_reqbufs(struct file *file, void *priv,
 580                         struct v4l2_requestbuffers *req)
 581 {
 582         struct solo_dev *solo_dev = video_drvdata(file);
 583
 584         return videobuf_reqbufs(&solo_dev->vidq, req);
 585 }
 586
 587 static int solo_querybuf(struct file *file, void *priv,
 588                          struct v4l2_buffer *buf)
 589 {
 590         struct solo_dev *solo_dev = video_drvdata(file);
 591
 592         return videobuf_querybuf(&solo_dev->vidq, buf);
 593 }
 594
 595 static int solo_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 596 {
 597         struct solo_dev *solo_dev = video_drvdata(file);
 598
 599         return videobuf_qbuf(&solo_dev->vidq, buf);
 600 }
 601
 602 static int solo_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 603 {
 604         struct solo_dev *solo_dev = video_drvdata(file);
 605
 606         return videobuf_dqbuf(&solo_dev->vidq, buf, file->f_flags & O_NONBLOCK);
 607 }
 608
 609 static int solo_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 610 {
 611         struct solo_dev *solo_dev = video_drvdata(file);
 612         int ret;
 613
 614         if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 615                 return -EINVAL;
 616
 617         ret = solo_start_thread(solo_dev);
 618         if (ret)
 619                 return ret;
 620
 621         return videobuf_streamon(&solo_dev->vidq);
 622 }
 623
 624 static int solo_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 625 {
 626         struct solo_dev *solo_dev = video_drvdata(file);
 627
 628         if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 629                 return -EINVAL;
 630
 631         return videobuf_streamoff(&solo_dev->vidq);
 632 }
 633
 634 static int solo_s_std(struct file *file, void *priv, v4l2_std_id i)
 635 {
 636         return 0;
 637 }
 638
 639 static int solo_s_ctrl(struct v4l2_ctrl *ctrl)
 640 {
 641         struct solo_dev *solo_dev =
 642                 container_of(ctrl->handler, struct solo_dev, disp_hdl);
 643
 644         switch (ctrl->id) {
 645         case V4L2_CID_MOTION_TRACE:
 646                 if (ctrl->val) {
 647                         solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER,
 648                                         SOLO_VI_MOTION_Y_ADD |
 649                                         SOLO_VI_MOTION_Y_VALUE(0x20) |
 650                                         SOLO_VI_MOTION_CB_VALUE(0x10) |
 651                                         SOLO_VI_MOTION_CR_VALUE(0x10));
 652                         solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR,
 653                                         SOLO_VI_MOTION_CR_ADD |
 654                                         SOLO_VI_MOTION_Y_VALUE(0x10) |
 655                                         SOLO_VI_MOTION_CB_VALUE(0x80) |
 656                                         SOLO_VI_MOTION_CR_VALUE(0x10));
 657                 } else {
 658                         solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0);
 659                         solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0);
 660                 }
 661                 return 0;
 662         default:
 663                 break;
 664         }
 665         return -EINVAL;
 666 }
 667
 668 static const struct v4l2_file_operations solo_v4l2_fops = {
 669         .owner                  = THIS_MODULE,
 670         .open                   = v4l2_fh_open,
 671         .release                = solo_v4l2_release,
 672         .read                   = solo_v4l2_read,
 673         .poll                   = solo_v4l2_poll,
 674         .mmap                   = solo_v4l2_mmap,
 675         .ioctl                  = video_ioctl2,
 676 };
 677
 678 static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = {
 679         .vidioc_querycap                = solo_querycap,
 680         .vidioc_s_std                   = solo_s_std,
 681         /* Input callbacks */
 682         .vidioc_enum_input              = solo_enum_input,
 683         .vidioc_s_input                 = solo_set_input,
 684         .vidioc_g_input                 = solo_get_input,
 685         /* Video capture format callbacks */
 686         .vidioc_enum_fmt_vid_cap        = solo_enum_fmt_cap,
 687         .vidioc_try_fmt_vid_cap         = solo_try_fmt_cap,
 688         .vidioc_s_fmt_vid_cap           = solo_set_fmt_cap,
 689         .vidioc_g_fmt_vid_cap           = solo_get_fmt_cap,
 690         /* Streaming I/O */
 691         .vidioc_reqbufs                 = solo_reqbufs,
 692         .vidioc_querybuf                = solo_querybuf,
 693         .vidioc_qbuf                    = solo_qbuf,
 694         .vidioc_dqbuf                   = solo_dqbuf,
 695         .vidioc_streamon                = solo_streamon,
 696         .vidioc_streamoff               = solo_streamoff,
 697         /* Logging and events */
 698         .vidioc_log_status              = v4l2_ctrl_log_status,
 699         .vidioc_subscribe_event         = v4l2_ctrl_subscribe_event,
 700         .vidioc_unsubscribe_event       = v4l2_event_unsubscribe,
 701 };
 702
 703 static struct video_device solo_v4l2_template = {
 704         .name                   = SOLO6X10_NAME,
 705         .fops                   = &solo_v4l2_fops,
 706         .ioctl_ops              = &solo_v4l2_ioctl_ops,
 707         .minor                  = -1,
 708         .release                = video_device_release,
 709
 710         .tvnorms                = V4L2_STD_NTSC_M | V4L2_STD_PAL_B,
 711         .current_norm           = V4L2_STD_NTSC_M,
 712 };
 713
 714 static const struct v4l2_ctrl_ops solo_ctrl_ops = {
 715         .s_ctrl = solo_s_ctrl,
 716 };
 717
 718 static const struct v4l2_ctrl_config solo_motion_trace_ctrl = {
 719         .ops = &solo_ctrl_ops,
 720         .id = V4L2_CID_MOTION_TRACE,
 721         .name = "Motion Detection Trace",
 722         .type = V4L2_CTRL_TYPE_BOOLEAN,
 723         .max = 1,
 724         .step = 1,
 725 };
 726
 727 int solo_v4l2_init(struct solo_dev *solo_dev, unsigned nr)
 728 {
 729         int ret;
 730         int i;
 731
 732         atomic_set(&solo_dev->disp_users, 0);
 733         init_waitqueue_head(&solo_dev->disp_thread_wait);
 734
 735         solo_dev->vfd = video_device_alloc();
 736         if (!solo_dev->vfd)
 737                 return -ENOMEM;
 738
 739         *solo_dev->vfd = solo_v4l2_template;
 740         solo_dev->vfd->v4l2_dev = &solo_dev->v4l2_dev;
 741         v4l2_ctrl_handler_init(&solo_dev->disp_hdl, 1);
 742         v4l2_ctrl_new_custom(&solo_dev->disp_hdl, &solo_motion_trace_ctrl, NULL);
 743         if (solo_dev->disp_hdl.error)
 744                 return solo_dev->disp_hdl.error;
 745         solo_dev->vfd->ctrl_handler = &solo_dev->disp_hdl;
 746         set_bit(V4L2_FL_USE_FH_PRIO, &solo_dev->vfd->flags);
 747
 748         video_set_drvdata(solo_dev->vfd, solo_dev);
 749
 750         spin_lock_init(&solo_dev->slock);
 751         INIT_LIST_HEAD(&solo_dev->vidq_active);
 752
 753         videobuf_queue_dma_contig_init(&solo_dev->vidq, &solo_video_qops,
 754                                        &solo_dev->pdev->dev, &solo_dev->slock,
 755                                        V4L2_BUF_TYPE_VIDEO_CAPTURE,
 756                                        V4L2_FIELD_INTERLACED,
 757                                        sizeof(struct videobuf_buffer),
 758                                        solo_dev, NULL);
 759
 760         /* Cycle all the channels and clear */
 761         for (i = 0; i < solo_dev->nr_chans; i++) {
 762                 solo_v4l2_set_ch(solo_dev, i);
 763                 while (erase_off(solo_dev))
 764                         /* Do nothing */;
 765         }
 766
 767         /* Set the default display channel */
 768         solo_v4l2_set_ch(solo_dev, 0);
 769         while (erase_off(solo_dev))
 770                 /* Do nothing */;
 771
 772         ret = video_register_device(solo_dev->vfd, VFL_TYPE_GRABBER, nr);
 773         if (ret < 0) {
 774                 video_device_release(solo_dev->vfd);
 775                 solo_dev->vfd = NULL;
 776                 return ret;
 777         }
 778
 779         snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)",
 780                  SOLO6X10_NAME, solo_dev->vfd->num);
 781
 782         dev_info(&solo_dev->pdev->dev, "Display as /dev/video%d with "
 783                  "%d inputs (%d extended)\n", solo_dev->vfd->num,
 784                  solo_dev->nr_chans, solo_dev->nr_ext);
 785
 786         return 0;
 787 }
 788
 789 void solo_v4l2_exit(struct solo_dev *solo_dev)
 790 {
 791         if (solo_dev->vfd == NULL)
 792                 return;
 793
 794         video_unregister_device(solo_dev->vfd);
 795         v4l2_ctrl_handler_free(&solo_dev->disp_hdl);
 796         solo_dev->vfd = NULL;
 797 }