drivers/staging/media/solo6x10/v4l2.c

   1 /*
   2  * Copyright (C) 2010 Bluecherry, LLC www.bluecherrydvr.com
   3  * Copyright (C) 2010 Ben Collins <bcollins@bluecherry.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/module.h>
  22 #include <linux/kthread.h>
  23 #include <linux/freezer.h>
  24 #include <media/v4l2-ioctl.h>
  25 #include <media/v4l2-common.h>
  26 #include <media/videobuf-dma-sg.h>
  27 #include "solo6x10.h"
  28 #include "tw28.h"
  29
  30 #define SOLO_HW_BPL             2048
  31 #define SOLO_DISP_PIX_FIELD     V4L2_FIELD_INTERLACED
  32
  33 /* Image size is two fields, SOLO_HW_BPL is one horizontal line */
  34 #define solo_vlines(__solo)     (__solo->video_vsize * 2)
  35 #define solo_image_size(__solo) (solo_bytesperline(__solo) * \
  36                                  solo_vlines(__solo))
  37 #define solo_bytesperline(__solo) (__solo->video_hsize * 2)
  38
  39 #define MIN_VID_BUFFERS         4
  40
  41 /* Simple file handle */
  42 struct solo_filehandle {
  43         struct solo_dev         *solo_dev;
  44         struct videobuf_queue   vidq;
  45         struct task_struct      *kthread;
  46         spinlock_t              slock;
  47         int                     old_write;
  48         struct list_head        vidq_active;
  49         struct p2m_desc         desc[SOLO_NR_P2M_DESC];
  50         int                     desc_idx;
  51 };
  52
  53 unsigned video_nr = -1;
  54 module_param(video_nr, uint, 0644);
  55 MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect (default)");
  56
  57 static void erase_on(struct solo_dev *solo_dev)
  58 {
  59         solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, SOLO_VO_DISP_ERASE_ON);
  60         solo_dev->erasing = 1;
  61         solo_dev->frame_blank = 0;
  62 }
  63
  64 static int erase_off(struct solo_dev *solo_dev)
  65 {
  66         if (!solo_dev->erasing)
  67                 return 0;
  68
  69         /* First time around, assert erase off */
  70         if (!solo_dev->frame_blank)
  71                 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, 0);
  72         /* Keep the erasing flag on for 8 frames minimum */
  73         if (solo_dev->frame_blank++ >= 8)
  74                 solo_dev->erasing = 0;
  75
  76         return 1;
  77 }
  78
  79 void solo_video_in_isr(struct solo_dev *solo_dev)
  80 {
  81         solo_reg_write(solo_dev, SOLO_IRQ_STAT, SOLO_IRQ_VIDEO_IN);
  82         wake_up_interruptible(&solo_dev->disp_thread_wait);
  83 }
  84
  85 static void solo_win_setup(struct solo_dev *solo_dev, u8 ch,
  86                            int sx, int sy, int ex, int ey, int scale)
  87 {
  88         if (ch >= solo_dev->nr_chans)
  89                 return;
  90
  91         /* Here, we just keep window/channel the same */
  92         solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL0(ch),
  93                        SOLO_VI_WIN_CHANNEL(ch) |
  94                        SOLO_VI_WIN_SX(sx) |
  95                        SOLO_VI_WIN_EX(ex) |
  96                        SOLO_VI_WIN_SCALE(scale));
  97
  98         solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch),
  99                        SOLO_VI_WIN_SY(sy) |
 100                        SOLO_VI_WIN_EY(ey));
 101 }
 102
 103 static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on)
 104 {
 105         u8 ch = idx * 4;
 106
 107         if (ch >= solo_dev->nr_chans)
 108                 return -EINVAL;
 109
 110         if (!on) {
 111                 u8 i;
 112                 for (i = ch; i < ch + 4; i++)
 113                         solo_win_setup(solo_dev, i, solo_dev->video_hsize,
 114                                        solo_vlines(solo_dev),
 115                                        solo_dev->video_hsize,
 116                                        solo_vlines(solo_dev), 0);
 117                 return 0;
 118         }
 119
 120         /* Row 1 */
 121         solo_win_setup(solo_dev, ch, 0, 0, solo_dev->video_hsize / 2,
 122                        solo_vlines(solo_dev) / 2, 3);
 123         solo_win_setup(solo_dev, ch + 1, solo_dev->video_hsize / 2, 0,
 124                        solo_dev->video_hsize, solo_vlines(solo_dev) / 2, 3);
 125         /* Row 2 */
 126         solo_win_setup(solo_dev, ch + 2, 0, solo_vlines(solo_dev) / 2,
 127                        solo_dev->video_hsize / 2, solo_vlines(solo_dev), 3);
 128         solo_win_setup(solo_dev, ch + 3, solo_dev->video_hsize / 2,
 129                        solo_vlines(solo_dev) / 2, solo_dev->video_hsize,
 130                        solo_vlines(solo_dev), 3);
 131
 132         return 0;
 133 }
 134
 135 static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on)
 136 {
 137         int sy, ysize, hsize, i;
 138
 139         if (!on) {
 140                 for (i = 0; i < 16; i++)
 141                         solo_win_setup(solo_dev, i, solo_dev->video_hsize,
 142                                        solo_vlines(solo_dev),
 143                                        solo_dev->video_hsize,
 144                                        solo_vlines(solo_dev), 0);
 145                 return 0;
 146         }
 147
 148         ysize = solo_vlines(solo_dev) / 4;
 149         hsize = solo_dev->video_hsize / 4;
 150
 151         for (sy = 0, i = 0; i < 4; i++, sy += ysize) {
 152                 solo_win_setup(solo_dev, i * 4, 0, sy, hsize,
 153                                sy + ysize, 5);
 154                 solo_win_setup(solo_dev, (i * 4) + 1, hsize, sy,
 155                                hsize * 2, sy + ysize, 5);
 156                 solo_win_setup(solo_dev, (i * 4) + 2, hsize * 2, sy,
 157                                hsize * 3, sy + ysize, 5);
 158                 solo_win_setup(solo_dev, (i * 4) + 3, hsize * 3, sy,
 159                                solo_dev->video_hsize, sy + ysize, 5);
 160         }
 161
 162         return 0;
 163 }
 164
 165 static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on)
 166 {
 167         u8 ext_ch;
 168
 169         if (ch < solo_dev->nr_chans) {
 170                 solo_win_setup(solo_dev, ch, on ? 0 : solo_dev->video_hsize,
 171                                on ? 0 : solo_vlines(solo_dev),
 172                                solo_dev->video_hsize, solo_vlines(solo_dev),
 173                                on ? 1 : 0);
 174                 return 0;
 175         }
 176
 177         if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
 178                 return -EINVAL;
 179
 180         ext_ch = ch - solo_dev->nr_chans;
 181
 182         /* 4up's first */
 183         if (ext_ch < 4)
 184                 return solo_v4l2_ch_ext_4up(solo_dev, ext_ch, on);
 185
 186         /* Remaining case is 16up for 16-port */
 187         return solo_v4l2_ch_ext_16up(solo_dev, on);
 188 }
 189
 190 static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch)
 191 {
 192         if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
 193                 return -EINVAL;
 194
 195         erase_on(solo_dev);
 196
 197         solo_v4l2_ch(solo_dev, solo_dev->cur_disp_ch, 0);
 198         solo_v4l2_ch(solo_dev, ch, 1);
 199
 200         solo_dev->cur_disp_ch = ch;
 201
 202         return 0;
 203 }
 204
 205 static void disp_reset_desc(struct solo_filehandle *fh)
 206 {
 207         /* We use desc mode, which ignores desc 0 */
 208         memset(fh->desc, 0, sizeof(*fh->desc));
 209         fh->desc_idx = 1;
 210 }
 211
 212 static int disp_flush_descs(struct solo_filehandle *fh)
 213 {
 214         int ret;
 215
 216         if (!fh->desc_idx)
 217                 return 0;
 218
 219         ret = solo_p2m_dma_desc(fh->solo_dev, SOLO_P2M_DMA_ID_DISP,
 220                                 fh->desc, fh->desc_idx);
 221         disp_reset_desc(fh);
 222
 223         return ret;
 224 }
 225
 226 static int disp_push_desc(struct solo_filehandle *fh, dma_addr_t dma_addr,
 227                       u32 ext_addr, int size, int repeat, int ext_size)
 228 {
 229         if (fh->desc_idx >= SOLO_NR_P2M_DESC) {
 230                 int ret = disp_flush_descs(fh);
 231                 if (ret)
 232                         return ret;
 233         }
 234
 235         solo_p2m_push_desc(&fh->desc[fh->desc_idx], 0, dma_addr, ext_addr,
 236                            size, repeat, ext_size);
 237         fh->desc_idx++;
 238
 239         return 0;
 240 }
 241
 242 static void solo_fillbuf(struct solo_filehandle *fh,
 243                          struct videobuf_buffer *vb)
 244 {
 245         struct solo_dev *solo_dev = fh->solo_dev;
 246         struct videobuf_dmabuf *vbuf;
 247         unsigned int fdma_addr;
 248         int error = 1;
 249         int i;
 250         struct scatterlist *sg;
 251         dma_addr_t sg_dma;
 252         int sg_size_left;
 253
 254         vbuf = videobuf_to_dma(vb);
 255         if (!vbuf)
 256                 goto finish_buf;
 257
 258         if (erase_off(solo_dev)) {
 259                 int i;
 260
 261                 /* Just blit to the entire sg list, ignoring size */
 262                 for_each_sg(vbuf->sglist, sg, vbuf->sglen, i) {
 263                         void *p = sg_virt(sg);
 264                         size_t len = sg_dma_len(sg);
 265
 266                         for (i = 0; i < len; i += 2) {
 267                                 ((u8 *)p)[i] = 0x80;
 268                                 ((u8 *)p)[i + 1] = 0x00;
 269                         }
 270                 }
 271
 272                 error = 0;
 273                 goto finish_buf;
 274         }
 275
 276         disp_reset_desc(fh);
 277         sg = vbuf->sglist;
 278         sg_dma = sg_dma_address(sg);
 279         sg_size_left = sg_dma_len(sg);
 280
 281         fdma_addr = SOLO_DISP_EXT_ADDR + (fh->old_write *
 282                         (SOLO_HW_BPL * solo_vlines(solo_dev)));
 283
 284         for (i = 0; i < solo_vlines(solo_dev); i++) {
 285                 int line_len = solo_bytesperline(solo_dev);
 286                 int lines;
 287
 288                 if (!sg_size_left) {
 289                         sg = sg_next(sg);
 290                         if (sg == NULL)
 291                                 goto finish_buf;
 292                         sg_dma = sg_dma_address(sg);
 293                         sg_size_left = sg_dma_len(sg);
 294                 }
 295
 296                 /* No room for an entire line, so chunk it up */
 297                 if (sg_size_left < line_len) {
 298                         int this_addr = fdma_addr;
 299
 300                         while (line_len > 0) {
 301                                 int this_write;
 302
 303                                 if (!sg_size_left) {
 304                                         sg = sg_next(sg);
 305                                         if (sg == NULL)
 306                                                 goto finish_buf;
 307                                         sg_dma = sg_dma_address(sg);
 308                                         sg_size_left = sg_dma_len(sg);
 309                                 }
 310
 311                                 this_write = min(sg_size_left, line_len);
 312
 313                                 if (disp_push_desc(fh, sg_dma, this_addr,
 314                                                    this_write, 0, 0))
 315                                         goto finish_buf;
 316
 317                                 line_len -= this_write;
 318                                 sg_size_left -= this_write;
 319                                 sg_dma += this_write;
 320                                 this_addr += this_write;
 321                         }
 322
 323                         fdma_addr += SOLO_HW_BPL;
 324                         continue;
 325                 }
 326
 327                 /* Shove as many lines into a repeating descriptor as possible */
 328                 lines = min(sg_size_left / line_len,
 329                             solo_vlines(solo_dev) - i);
 330
 331                 if (disp_push_desc(fh, sg_dma, fdma_addr, line_len,
 332                                    lines - 1, SOLO_HW_BPL))
 333                         goto finish_buf;
 334
 335                 i += lines - 1;
 336                 fdma_addr += SOLO_HW_BPL * lines;
 337                 sg_dma += lines * line_len;
 338                 sg_size_left -= lines * line_len;
 339         }
 340
 341         error = disp_flush_descs(fh);
 342
 343 finish_buf:
 344         if (error) {
 345                 vb->state = VIDEOBUF_ERROR;
 346         } else {
 347                 vb->size = solo_vlines(solo_dev) * solo_bytesperline(solo_dev);
 348                 vb->state = VIDEOBUF_DONE;
 349                 vb->field_count++;
 350                 do_gettimeofday(&vb->ts);
 351         }
 352
 353         wake_up(&vb->done);
 354
 355         return;
 356 }
 357
 358 static void solo_thread_try(struct solo_filehandle *fh)
 359 {
 360         struct videobuf_buffer *vb;
 361         unsigned int cur_write;
 362
 363         for (;;) {
 364                 spin_lock(&fh->slock);
 365
 366                 if (list_empty(&fh->vidq_active))
 367                         break;
 368
 369                 vb = list_first_entry(&fh->vidq_active, struct videobuf_buffer,
 370                                       queue);
 371
 372                 if (!waitqueue_active(&vb->done))
 373                         break;
 374
 375                 cur_write = SOLO_VI_STATUS0_PAGE(solo_reg_read(fh->solo_dev,
 376                                                  SOLO_VI_STATUS0));
 377                 if (cur_write == fh->old_write)
 378                         break;
 379
 380                 fh->old_write = cur_write;
 381                 list_del(&vb->queue);
 382
 383                 spin_unlock(&fh->slock);
 384
 385                 solo_fillbuf(fh, vb);
 386         }
 387
 388         assert_spin_locked(&fh->slock);
 389         spin_unlock(&fh->slock);
 390 }
 391
 392 static int solo_thread(void *data)
 393 {
 394         struct solo_filehandle *fh = data;
 395         struct solo_dev *solo_dev = fh->solo_dev;
 396         DECLARE_WAITQUEUE(wait, current);
 397
 398         set_freezable();
 399         add_wait_queue(&solo_dev->disp_thread_wait, &wait);
 400
 401         for (;;) {
 402                 long timeout = schedule_timeout_interruptible(HZ);
 403                 if (timeout == -ERESTARTSYS || kthread_should_stop())
 404                         break;
 405                 solo_thread_try(fh);
 406                 try_to_freeze();
 407         }
 408
 409         remove_wait_queue(&solo_dev->disp_thread_wait, &wait);
 410
 411         return 0;
 412 }
 413
 414 static int solo_start_thread(struct solo_filehandle *fh)
 415 {
 416         fh->kthread = kthread_run(solo_thread, fh, SOLO6X10_NAME "_disp");
 417
 418         return PTR_RET(fh->kthread);
 419 }
 420
 421 static void solo_stop_thread(struct solo_filehandle *fh)
 422 {
 423         if (fh->kthread) {
 424                 kthread_stop(fh->kthread);
 425                 fh->kthread = NULL;
 426         }
 427 }
 428
 429 static int solo_buf_setup(struct videobuf_queue *vq, unsigned int *count,
 430                           unsigned int *size)
 431 {
 432         struct solo_filehandle *fh = vq->priv_data;
 433         struct solo_dev *solo_dev  = fh->solo_dev;
 434
 435         *size = solo_image_size(solo_dev);
 436
 437         if (*count < MIN_VID_BUFFERS)
 438                 *count = MIN_VID_BUFFERS;
 439
 440         return 0;
 441 }
 442
 443 static int solo_buf_prepare(struct videobuf_queue *vq,
 444                             struct videobuf_buffer *vb, enum v4l2_field field)
 445 {
 446         struct solo_filehandle *fh  = vq->priv_data;
 447         struct solo_dev *solo_dev = fh->solo_dev;
 448
 449         vb->size = solo_image_size(solo_dev);
 450         if (vb->baddr != 0 && vb->bsize < vb->size)
 451                 return -EINVAL;
 452
 453         /* XXX: These properties only change when queue is idle */
 454         vb->width  = solo_dev->video_hsize;
 455         vb->height = solo_vlines(solo_dev);
 456         vb->bytesperline = solo_bytesperline(solo_dev);
 457         vb->field  = field;
 458
 459         if (vb->state == VIDEOBUF_NEEDS_INIT) {
 460                 int rc = videobuf_iolock(vq, vb, NULL);
 461                 if (rc < 0) {
 462                         struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
 463                         videobuf_dma_unmap(vq->dev, dma);
 464                         videobuf_dma_free(dma);
 465                         vb->state = VIDEOBUF_NEEDS_INIT;
 466                         return rc;
 467                 }
 468         }
 469         vb->state = VIDEOBUF_PREPARED;
 470
 471         return 0;
 472 }
 473
 474 static void solo_buf_queue(struct videobuf_queue *vq,
 475                            struct videobuf_buffer *vb)
 476 {
 477         struct solo_filehandle *fh = vq->priv_data;
 478         struct solo_dev *solo_dev = fh->solo_dev;
 479
 480         vb->state = VIDEOBUF_QUEUED;
 481         list_add_tail(&vb->queue, &fh->vidq_active);
 482         wake_up_interruptible(&solo_dev->disp_thread_wait);
 483 }
 484
 485 static void solo_buf_release(struct videobuf_queue *vq,
 486                              struct videobuf_buffer *vb)
 487 {
 488         struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
 489
 490         videobuf_dma_unmap(vq->dev, dma);
 491         videobuf_dma_free(dma);
 492         vb->state = VIDEOBUF_NEEDS_INIT;
 493 }
 494
 495 static struct videobuf_queue_ops solo_video_qops = {
 496         .buf_setup      = solo_buf_setup,
 497         .buf_prepare    = solo_buf_prepare,
 498         .buf_queue      = solo_buf_queue,
 499         .buf_release    = solo_buf_release,
 500 };
 501
 502 static unsigned int solo_v4l2_poll(struct file *file,
 503                                    struct poll_table_struct *wait)
 504 {
 505         struct solo_filehandle *fh = file->private_data;
 506
 507         return videobuf_poll_stream(file, &fh->vidq, wait);
 508 }
 509
 510 static int solo_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
 511 {
 512         struct solo_filehandle *fh = file->private_data;
 513
 514         return videobuf_mmap_mapper(&fh->vidq, vma);
 515 }
 516
 517 static int solo_v4l2_open(struct file *file)
 518 {
 519         struct solo_dev *solo_dev = video_drvdata(file);
 520         struct solo_filehandle *fh;
 521         int ret;
 522
 523         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
 524         if (fh == NULL)
 525                 return -ENOMEM;
 526
 527         spin_lock_init(&fh->slock);
 528         INIT_LIST_HEAD(&fh->vidq_active);
 529         fh->solo_dev = solo_dev;
 530         file->private_data = fh;
 531
 532         ret = solo_start_thread(fh);
 533         if (ret) {
 534                 kfree(fh);
 535                 return ret;
 536         }
 537
 538         videobuf_queue_sg_init(&fh->vidq, &solo_video_qops,
 539                                &solo_dev->pdev->dev, &fh->slock,
 540                                V4L2_BUF_TYPE_VIDEO_CAPTURE,
 541                                SOLO_DISP_PIX_FIELD,
 542                                sizeof(struct videobuf_buffer), fh, NULL);
 543
 544         return 0;
 545 }
 546
 547 static ssize_t solo_v4l2_read(struct file *file, char __user *data,
 548                               size_t count, loff_t *ppos)
 549 {
 550         struct solo_filehandle *fh = file->private_data;
 551
 552         return videobuf_read_stream(&fh->vidq, data, count, ppos, 0,
 553                                     file->f_flags & O_NONBLOCK);
 554 }
 555
 556 static int solo_v4l2_release(struct file *file)
 557 {
 558         struct solo_filehandle *fh = file->private_data;
 559
 560         videobuf_stop(&fh->vidq);
 561         videobuf_mmap_free(&fh->vidq);
 562         solo_stop_thread(fh);
 563         kfree(fh);
 564
 565         return 0;
 566 }
 567
 568 static int solo_querycap(struct file *file, void  *priv,
 569                          struct v4l2_capability *cap)
 570 {
 571         struct solo_filehandle  *fh  = priv;
 572         struct solo_dev *solo_dev = fh->solo_dev;
 573
 574         strcpy(cap->driver, SOLO6X10_NAME);
 575         strcpy(cap->card, "Softlogic 6x10");
 576         snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI %s",
 577                  pci_name(solo_dev->pdev));
 578         cap->version = SOLO6X10_VER_NUM;
 579         cap->capabilities =     V4L2_CAP_VIDEO_CAPTURE |
 580                                 V4L2_CAP_READWRITE |
 581                                 V4L2_CAP_STREAMING;
 582         return 0;
 583 }
 584
 585 static int solo_enum_ext_input(struct solo_dev *solo_dev,
 586                                struct v4l2_input *input)
 587 {
 588         static const char *dispnames_1[] = { "4UP" };
 589         static const char *dispnames_2[] = { "4UP-1", "4UP-2" };
 590         static const char *dispnames_5[] = {
 591                 "4UP-1", "4UP-2", "4UP-3", "4UP-4", "16UP"
 592         };
 593         const char **dispnames;
 594
 595         if (input->index >= (solo_dev->nr_chans + solo_dev->nr_ext))
 596                 return -EINVAL;
 597
 598         if (solo_dev->nr_ext == 5)
 599                 dispnames = dispnames_5;
 600         else if (solo_dev->nr_ext == 2)
 601                 dispnames = dispnames_2;
 602         else
 603                 dispnames = dispnames_1;
 604
 605         snprintf(input->name, sizeof(input->name), "Multi %s",
 606                  dispnames[input->index - solo_dev->nr_chans]);
 607
 608         return 0;
 609 }
 610
 611 static int solo_enum_input(struct file *file, void *priv,
 612                            struct v4l2_input *input)
 613 {
 614         struct solo_filehandle *fh  = priv;
 615         struct solo_dev *solo_dev = fh->solo_dev;
 616
 617         if (input->index >= solo_dev->nr_chans) {
 618                 int ret = solo_enum_ext_input(solo_dev, input);
 619                 if (ret < 0)
 620                         return ret;
 621         } else {
 622                 snprintf(input->name, sizeof(input->name), "Camera %d",
 623                          input->index + 1);
 624
 625                 /* We can only check this for normal inputs */
 626                 if (!tw28_get_video_status(solo_dev, input->index))
 627                         input->status = V4L2_IN_ST_NO_SIGNAL;
 628         }
 629
 630         input->type = V4L2_INPUT_TYPE_CAMERA;
 631
 632         if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
 633                 input->std = V4L2_STD_NTSC_M;
 634         else
 635                 input->std = V4L2_STD_PAL_B;
 636
 637         return 0;
 638 }
 639
 640 static int solo_set_input(struct file *file, void *priv, unsigned int index)
 641 {
 642         struct solo_filehandle *fh = priv;
 643
 644         return solo_v4l2_set_ch(fh->solo_dev, index);
 645 }
 646
 647 static int solo_get_input(struct file *file, void *priv, unsigned int *index)
 648 {
 649         struct solo_filehandle *fh = priv;
 650
 651         *index = fh->solo_dev->cur_disp_ch;
 652
 653         return 0;
 654 }
 655
 656 static int solo_enum_fmt_cap(struct file *file, void *priv,
 657                              struct v4l2_fmtdesc *f)
 658 {
 659         if (f->index)
 660                 return -EINVAL;
 661
 662         f->pixelformat = V4L2_PIX_FMT_UYVY;
 663         strlcpy(f->description, "UYUV 4:2:2 Packed", sizeof(f->description));
 664
 665         return 0;
 666 }
 667
 668 static int solo_try_fmt_cap(struct file *file, void *priv,
 669                             struct v4l2_format *f)
 670 {
 671         struct solo_filehandle *fh = priv;
 672         struct solo_dev *solo_dev = fh->solo_dev;
 673         struct v4l2_pix_format *pix = &f->fmt.pix;
 674         int image_size = solo_image_size(solo_dev);
 675
 676         /* Check supported sizes */
 677         if (pix->width != solo_dev->video_hsize)
 678                 pix->width = solo_dev->video_hsize;
 679         if (pix->height != solo_vlines(solo_dev))
 680                 pix->height = solo_vlines(solo_dev);
 681         if (pix->sizeimage != image_size)
 682                 pix->sizeimage = image_size;
 683
 684         /* Check formats */
 685         if (pix->field == V4L2_FIELD_ANY)
 686                 pix->field = SOLO_DISP_PIX_FIELD;
 687
 688         if (pix->pixelformat != V4L2_PIX_FMT_UYVY ||
 689             pix->field       != SOLO_DISP_PIX_FIELD ||
 690             pix->colorspace  != V4L2_COLORSPACE_SMPTE170M)
 691                 return -EINVAL;
 692
 693         return 0;
 694 }
 695
 696 static int solo_set_fmt_cap(struct file *file, void *priv,
 697                             struct v4l2_format *f)
 698 {
 699         struct solo_filehandle *fh = priv;
 700
 701         if (videobuf_queue_is_busy(&fh->vidq))
 702                 return -EBUSY;
 703
 704         /* For right now, if it doesn't match our running config,
 705          * then fail */
 706         return solo_try_fmt_cap(file, priv, f);
 707 }
 708
 709 static int solo_get_fmt_cap(struct file *file, void *priv,
 710                             struct v4l2_format *f)
 711 {
 712         struct solo_filehandle *fh = priv;
 713         struct solo_dev *solo_dev = fh->solo_dev;
 714         struct v4l2_pix_format *pix = &f->fmt.pix;
 715
 716         pix->width = solo_dev->video_hsize;
 717         pix->height = solo_vlines(solo_dev);
 718         pix->pixelformat = V4L2_PIX_FMT_UYVY;
 719         pix->field = SOLO_DISP_PIX_FIELD;
 720         pix->sizeimage = solo_image_size(solo_dev);
 721         pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
 722         pix->bytesperline = solo_bytesperline(solo_dev);
 723
 724         return 0;
 725 }
 726
 727 static int solo_reqbufs(struct file *file, void *priv,
 728                         struct v4l2_requestbuffers *req)
 729 {
 730         struct solo_filehandle *fh = priv;
 731
 732         return videobuf_reqbufs(&fh->vidq, req);
 733 }
 734
 735 static int solo_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 736 {
 737         struct solo_filehandle *fh = priv;
 738
 739         return videobuf_querybuf(&fh->vidq, buf);
 740 }
 741
 742 static int solo_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 743 {
 744         struct solo_filehandle *fh = priv;
 745
 746         return videobuf_qbuf(&fh->vidq, buf);
 747 }
 748
 749 static int solo_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 750 {
 751         struct solo_filehandle *fh = priv;
 752
 753         return videobuf_dqbuf(&fh->vidq, buf, file->f_flags & O_NONBLOCK);
 754 }
 755
 756 static int solo_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 757 {
 758         struct solo_filehandle *fh = priv;
 759
 760         if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 761                 return -EINVAL;
 762
 763         return videobuf_streamon(&fh->vidq);
 764 }
 765
 766 static int solo_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 767 {
 768         struct solo_filehandle *fh = priv;
 769
 770         if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 771                 return -EINVAL;
 772
 773         return videobuf_streamoff(&fh->vidq);
 774 }
 775
 776 static int solo_s_std(struct file *file, void *priv, v4l2_std_id *i)
 777 {
 778         return 0;
 779 }
 780
 781 static const u32 solo_motion_ctrls[] = {
 782         V4L2_CID_MOTION_TRACE,
 783         0
 784 };
 785
 786 static const u32 *solo_ctrl_classes[] = {
 787         solo_motion_ctrls,
 788         NULL
 789 };
 790
 791 static int solo_disp_queryctrl(struct file *file, void *priv,
 792                                struct v4l2_queryctrl *qc)
 793 {
 794         qc->id = v4l2_ctrl_next(solo_ctrl_classes, qc->id);
 795         if (!qc->id)
 796                 return -EINVAL;
 797
 798         switch (qc->id) {
 799 #ifdef PRIVATE_CIDS
 800         case V4L2_CID_MOTION_TRACE:
 801                 qc->type = V4L2_CTRL_TYPE_BOOLEAN;
 802                 qc->minimum = 0;
 803                 qc->maximum = qc->step = 1;
 804                 qc->default_value = 0;
 805                 strlcpy(qc->name, "Motion Detection Trace", sizeof(qc->name));
 806                 return 0;
 807 #else
 808         case V4L2_CID_MOTION_TRACE:
 809                 return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
 810 #endif
 811         }
 812         return -EINVAL;
 813 }
 814
 815 static int solo_disp_g_ctrl(struct file *file, void *priv,
 816                             struct v4l2_control *ctrl)
 817 {
 818         struct solo_filehandle *fh = priv;
 819         struct solo_dev *solo_dev = fh->solo_dev;
 820
 821         switch (ctrl->id) {
 822         case V4L2_CID_MOTION_TRACE:
 823                 ctrl->value = solo_reg_read(solo_dev, SOLO_VI_MOTION_BAR)
 824                         ? 1 : 0;
 825                 return 0;
 826         }
 827         return -EINVAL;
 828 }
 829
 830 static int solo_disp_s_ctrl(struct file *file, void *priv,
 831                             struct v4l2_control *ctrl)
 832 {
 833         struct solo_filehandle *fh = priv;
 834         struct solo_dev *solo_dev = fh->solo_dev;
 835
 836         switch (ctrl->id) {
 837         case V4L2_CID_MOTION_TRACE:
 838                 if (ctrl->value) {
 839                         solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER,
 840                                         SOLO_VI_MOTION_Y_ADD |
 841                                         SOLO_VI_MOTION_Y_VALUE(0x20) |
 842                                         SOLO_VI_MOTION_CB_VALUE(0x10) |
 843                                         SOLO_VI_MOTION_CR_VALUE(0x10));
 844                         solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR,
 845                                         SOLO_VI_MOTION_CR_ADD |
 846                                         SOLO_VI_MOTION_Y_VALUE(0x10) |
 847                                         SOLO_VI_MOTION_CB_VALUE(0x80) |
 848                                         SOLO_VI_MOTION_CR_VALUE(0x10));
 849                 } else {
 850                         solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0);
 851                         solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0);
 852                 }
 853                 return 0;
 854         }
 855         return -EINVAL;
 856 }
 857
 858 static const struct v4l2_file_operations solo_v4l2_fops = {
 859         .owner                  = THIS_MODULE,
 860         .open                   = solo_v4l2_open,
 861         .release                = solo_v4l2_release,
 862         .read                   = solo_v4l2_read,
 863         .poll                   = solo_v4l2_poll,
 864         .mmap                   = solo_v4l2_mmap,
 865         .ioctl                  = video_ioctl2,
 866 };
 867
 868 static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = {
 869         .vidioc_querycap                = solo_querycap,
 870         .vidioc_s_std                   = solo_s_std,
 871         /* Input callbacks */
 872         .vidioc_enum_input              = solo_enum_input,
 873         .vidioc_s_input                 = solo_set_input,
 874         .vidioc_g_input                 = solo_get_input,
 875         /* Video capture format callbacks */
 876         .vidioc_enum_fmt_vid_cap        = solo_enum_fmt_cap,
 877         .vidioc_try_fmt_vid_cap         = solo_try_fmt_cap,
 878         .vidioc_s_fmt_vid_cap           = solo_set_fmt_cap,
 879         .vidioc_g_fmt_vid_cap           = solo_get_fmt_cap,
 880         /* Streaming I/O */
 881         .vidioc_reqbufs                 = solo_reqbufs,
 882         .vidioc_querybuf                = solo_querybuf,
 883         .vidioc_qbuf                    = solo_qbuf,
 884         .vidioc_dqbuf                   = solo_dqbuf,
 885         .vidioc_streamon                = solo_streamon,
 886         .vidioc_streamoff               = solo_streamoff,
 887         /* Controls */
 888         .vidioc_queryctrl               = solo_disp_queryctrl,
 889         .vidioc_g_ctrl                  = solo_disp_g_ctrl,
 890         .vidioc_s_ctrl                  = solo_disp_s_ctrl,
 891 };
 892
 893 static struct video_device solo_v4l2_template = {
 894         .name                   = SOLO6X10_NAME,
 895         .fops                   = &solo_v4l2_fops,
 896         .ioctl_ops              = &solo_v4l2_ioctl_ops,
 897         .minor                  = -1,
 898         .release                = video_device_release,
 899
 900         .tvnorms                = V4L2_STD_NTSC_M | V4L2_STD_PAL_B,
 901         .current_norm           = V4L2_STD_NTSC_M,
 902 };
 903
 904 int solo_v4l2_init(struct solo_dev *solo_dev)
 905 {
 906         int ret;
 907         int i;
 908
 909         init_waitqueue_head(&solo_dev->disp_thread_wait);
 910
 911         solo_dev->vfd = video_device_alloc();
 912         if (!solo_dev->vfd)
 913                 return -ENOMEM;
 914
 915         *solo_dev->vfd = solo_v4l2_template;
 916         solo_dev->vfd->parent = &solo_dev->pdev->dev;
 917
 918         ret = video_register_device(solo_dev->vfd, VFL_TYPE_GRABBER, video_nr);
 919         if (ret < 0) {
 920                 video_device_release(solo_dev->vfd);
 921                 solo_dev->vfd = NULL;
 922                 return ret;
 923         }
 924
 925         video_set_drvdata(solo_dev->vfd, solo_dev);
 926
 927         snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)",
 928                  SOLO6X10_NAME, solo_dev->vfd->num);
 929
 930         if (video_nr != -1)
 931                 video_nr++;
 932
 933         dev_info(&solo_dev->pdev->dev, "Display as /dev/video%d with "
 934                  "%d inputs (%d extended)\n", solo_dev->vfd->num,
 935                  solo_dev->nr_chans, solo_dev->nr_ext);
 936
 937         /* Cycle all the channels and clear */
 938         for (i = 0; i < solo_dev->nr_chans; i++) {
 939                 solo_v4l2_set_ch(solo_dev, i);
 940                 while (erase_off(solo_dev))
 941                         ;/* Do nothing */
 942         }
 943
 944         /* Set the default display channel */
 945         solo_v4l2_set_ch(solo_dev, 0);
 946         while (erase_off(solo_dev))
 947                 ;/* Do nothing */
 948
 949         solo_irq_on(solo_dev, SOLO_IRQ_VIDEO_IN);
 950
 951         return 0;
 952 }
 953
 954 void solo_v4l2_exit(struct solo_dev *solo_dev)
 955 {
 956         solo_irq_off(solo_dev, SOLO_IRQ_VIDEO_IN);
 957         if (solo_dev->vfd) {
 958                 video_unregister_device(solo_dev->vfd);
 959                 solo_dev->vfd = NULL;
 960         }
 961 }