1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2010-2013 Bluecherry, LLC <https://www.bluecherrydvr.com> 4 * 5 * Original author: 6 * Ben Collins <bcollins@ubuntu.com> 7 * 8 * Additional work by: 9 * John Brooks <john.brooks@bluecherry.net> 10 */ 11 12 #include <linux/kernel.h> 13 #include <linux/module.h> 14 #include <linux/kthread.h> 15 #include <linux/freezer.h> 16 17 #include <media/v4l2-ioctl.h> 18 #include <media/v4l2-common.h> 19 #include <media/v4l2-event.h> 20 #include <media/videobuf2-v4l2.h> 21 #include <media/videobuf2-dma-contig.h> 22 23 #include "solo6x10.h" 24 #include "solo6x10-tw28.h" 25 26 /* Image size is two fields, SOLO_HW_BPL is one horizontal line in hardware */ 27 #define SOLO_HW_BPL 2048 28 #define solo_vlines(__solo) (__solo->video_vsize * 2) 29 #define solo_image_size(__solo) (solo_bytesperline(__solo) * \ 30 solo_vlines(__solo)) 31 #define solo_bytesperline(__solo) (__solo->video_hsize * 2) 32 33 #define MIN_VID_BUFFERS 2 34 35 static inline void erase_on(struct solo_dev *solo_dev) 36 { 37 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, SOLO_VO_DISP_ERASE_ON); 38 solo_dev->erasing = 1; 39 solo_dev->frame_blank = 0; 40 } 41 42 static inline int erase_off(struct solo_dev *solo_dev) 43 { 44 if (!solo_dev->erasing) 45 return 0; 46 47 /* First time around, assert erase off */ 48 if (!solo_dev->frame_blank) 49 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, 0); 50 /* Keep the erasing flag on for 8 frames minimum */ 51 if (solo_dev->frame_blank++ >= 8) 52 solo_dev->erasing = 0; 53 54 return 1; 55 } 56 57 void solo_video_in_isr(struct solo_dev *solo_dev) 58 { 59 wake_up_interruptible_all(&solo_dev->disp_thread_wait); 60 } 61 62 static void solo_win_setup(struct solo_dev *solo_dev, u8 ch, 63 int sx, int sy, int ex, int ey, int scale) 64 { 65 if (ch >= solo_dev->nr_chans) 66 return; 67 68 /* Here, we just keep window/channel the same */ 69 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL0(ch), 70 SOLO_VI_WIN_CHANNEL(ch) | 71 SOLO_VI_WIN_SX(sx) | 72 SOLO_VI_WIN_EX(ex) | 73 SOLO_VI_WIN_SCALE(scale)); 74 75 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch), 76 SOLO_VI_WIN_SY(sy) | 77 SOLO_VI_WIN_EY(ey)); 78 } 79 80 static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on) 81 { 82 u8 ch = idx * 4; 83 84 if (ch >= solo_dev->nr_chans) 85 return -EINVAL; 86 87 if (!on) { 88 u8 i; 89 90 for (i = ch; i < ch + 4; i++) 91 solo_win_setup(solo_dev, i, solo_dev->video_hsize, 92 solo_vlines(solo_dev), 93 solo_dev->video_hsize, 94 solo_vlines(solo_dev), 0); 95 return 0; 96 } 97 98 /* Row 1 */ 99 solo_win_setup(solo_dev, ch, 0, 0, solo_dev->video_hsize / 2, 100 solo_vlines(solo_dev) / 2, 3); 101 solo_win_setup(solo_dev, ch + 1, solo_dev->video_hsize / 2, 0, 102 solo_dev->video_hsize, solo_vlines(solo_dev) / 2, 3); 103 /* Row 2 */ 104 solo_win_setup(solo_dev, ch + 2, 0, solo_vlines(solo_dev) / 2, 105 solo_dev->video_hsize / 2, solo_vlines(solo_dev), 3); 106 solo_win_setup(solo_dev, ch + 3, solo_dev->video_hsize / 2, 107 solo_vlines(solo_dev) / 2, solo_dev->video_hsize, 108 solo_vlines(solo_dev), 3); 109 110 return 0; 111 } 112 113 static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on) 114 { 115 int sy, ysize, hsize, i; 116 117 if (!on) { 118 for (i = 0; i < 16; i++) 119 solo_win_setup(solo_dev, i, solo_dev->video_hsize, 120 solo_vlines(solo_dev), 121 solo_dev->video_hsize, 122 solo_vlines(solo_dev), 0); 123 return 0; 124 } 125 126 ysize = solo_vlines(solo_dev) / 4; 127 hsize = solo_dev->video_hsize / 4; 128 129 for (sy = 0, i = 0; i < 4; i++, sy += ysize) { 130 solo_win_setup(solo_dev, i * 4, 0, sy, hsize, 131 sy + ysize, 5); 132 solo_win_setup(solo_dev, (i * 4) + 1, hsize, sy, 133 hsize * 2, sy + ysize, 5); 134 solo_win_setup(solo_dev, (i * 4) + 2, hsize * 2, sy, 135 hsize * 3, sy + ysize, 5); 136 solo_win_setup(solo_dev, (i * 4) + 3, hsize * 3, sy, 137 solo_dev->video_hsize, sy + ysize, 5); 138 } 139 140 return 0; 141 } 142 143 static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on) 144 { 145 u8 ext_ch; 146 147 if (ch < solo_dev->nr_chans) { 148 solo_win_setup(solo_dev, ch, on ? 0 : solo_dev->video_hsize, 149 on ? 0 : solo_vlines(solo_dev), 150 solo_dev->video_hsize, solo_vlines(solo_dev), 151 on ? 1 : 0); 152 return 0; 153 } 154 155 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext) 156 return -EINVAL; 157 158 ext_ch = ch - solo_dev->nr_chans; 159 160 /* 4up's first */ 161 if (ext_ch < 4) 162 return solo_v4l2_ch_ext_4up(solo_dev, ext_ch, on); 163 164 /* Remaining case is 16up for 16-port */ 165 return solo_v4l2_ch_ext_16up(solo_dev, on); 166 } 167 168 static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch) 169 { 170 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext) 171 return -EINVAL; 172 173 erase_on(solo_dev); 174 175 solo_v4l2_ch(solo_dev, solo_dev->cur_disp_ch, 0); 176 solo_v4l2_ch(solo_dev, ch, 1); 177 178 solo_dev->cur_disp_ch = ch; 179 180 return 0; 181 } 182 183 static void solo_fillbuf(struct solo_dev *solo_dev, 184 struct vb2_buffer *vb) 185 { 186 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 187 dma_addr_t addr; 188 unsigned int fdma_addr; 189 int error = -1; 190 int i; 191 192 addr = vb2_dma_contig_plane_dma_addr(vb, 0); 193 if (!addr) 194 goto finish_buf; 195 196 if (erase_off(solo_dev)) { 197 void *p = vb2_plane_vaddr(vb, 0); 198 int image_size = solo_image_size(solo_dev); 199 200 for (i = 0; i < image_size; i += 2) { 201 ((u8 *)p)[i] = 0x80; 202 ((u8 *)p)[i + 1] = 0x00; 203 } 204 error = 0; 205 } else { 206 fdma_addr = SOLO_DISP_EXT_ADDR + (solo_dev->old_write * 207 (SOLO_HW_BPL * solo_vlines(solo_dev))); 208 209 error = solo_p2m_dma_t(solo_dev, 0, addr, fdma_addr, 210 solo_bytesperline(solo_dev), 211 solo_vlines(solo_dev), SOLO_HW_BPL); 212 } 213 214 finish_buf: 215 if (!error) { 216 vb2_set_plane_payload(vb, 0, 217 solo_vlines(solo_dev) * solo_bytesperline(solo_dev)); 218 vbuf->sequence = solo_dev->sequence++; 219 vb->timestamp = ktime_get_ns(); 220 } 221 222 vb2_buffer_done(vb, error ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); 223 } 224 225 static void solo_thread_try(struct solo_dev *solo_dev) 226 { 227 struct solo_vb2_buf *vb; 228 229 /* Only "break" from this loop if slock is held, otherwise 230 * just return. */ 231 for (;;) { 232 unsigned int cur_write; 233 234 cur_write = SOLO_VI_STATUS0_PAGE( 235 solo_reg_read(solo_dev, SOLO_VI_STATUS0)); 236 if (cur_write == solo_dev->old_write) 237 return; 238 239 spin_lock(&solo_dev->slock); 240 241 if (list_empty(&solo_dev->vidq_active)) 242 break; 243 244 vb = list_first_entry(&solo_dev->vidq_active, struct solo_vb2_buf, 245 list); 246 247 solo_dev->old_write = cur_write; 248 list_del(&vb->list); 249 250 spin_unlock(&solo_dev->slock); 251 252 solo_fillbuf(solo_dev, &vb->vb.vb2_buf); 253 } 254 255 assert_spin_locked(&solo_dev->slock); 256 spin_unlock(&solo_dev->slock); 257 } 258 259 static int solo_thread(void *data) 260 { 261 struct solo_dev *solo_dev = data; 262 DECLARE_WAITQUEUE(wait, current); 263 264 set_freezable(); 265 add_wait_queue(&solo_dev->disp_thread_wait, &wait); 266 267 for (;;) { 268 long timeout = schedule_timeout_interruptible(HZ); 269 270 if (timeout == -ERESTARTSYS || kthread_should_stop()) 271 break; 272 solo_thread_try(solo_dev); 273 try_to_freeze(); 274 } 275 276 remove_wait_queue(&solo_dev->disp_thread_wait, &wait); 277 278 return 0; 279 } 280 281 static int solo_start_thread(struct solo_dev *solo_dev) 282 { 283 int ret = 0; 284 285 solo_dev->kthread = kthread_run(solo_thread, solo_dev, SOLO6X10_NAME "_disp"); 286 287 if (IS_ERR(solo_dev->kthread)) { 288 ret = PTR_ERR(solo_dev->kthread); 289 solo_dev->kthread = NULL; 290 return ret; 291 } 292 solo_irq_on(solo_dev, SOLO_IRQ_VIDEO_IN); 293 294 return ret; 295 } 296 297 static void solo_stop_thread(struct solo_dev *solo_dev) 298 { 299 if (!solo_dev->kthread) 300 return; 301 302 solo_irq_off(solo_dev, SOLO_IRQ_VIDEO_IN); 303 kthread_stop(solo_dev->kthread); 304 solo_dev->kthread = NULL; 305 } 306 307 static int solo_queue_setup(struct vb2_queue *q, 308 unsigned int *num_buffers, unsigned int *num_planes, 309 unsigned int sizes[], struct device *alloc_devs[]) 310 { 311 struct solo_dev *solo_dev = vb2_get_drv_priv(q); 312 313 sizes[0] = solo_image_size(solo_dev); 314 *num_planes = 1; 315 316 if (*num_buffers < MIN_VID_BUFFERS) 317 *num_buffers = MIN_VID_BUFFERS; 318 319 return 0; 320 } 321 322 static int solo_start_streaming(struct vb2_queue *q, unsigned int count) 323 { 324 struct solo_dev *solo_dev = vb2_get_drv_priv(q); 325 326 solo_dev->sequence = 0; 327 return solo_start_thread(solo_dev); 328 } 329 330 static void solo_stop_streaming(struct vb2_queue *q) 331 { 332 struct solo_dev *solo_dev = vb2_get_drv_priv(q); 333 334 solo_stop_thread(solo_dev); 335 336 spin_lock(&solo_dev->slock); 337 while (!list_empty(&solo_dev->vidq_active)) { 338 struct solo_vb2_buf *buf = list_entry( 339 solo_dev->vidq_active.next, 340 struct solo_vb2_buf, list); 341 342 list_del(&buf->list); 343 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 344 } 345 spin_unlock(&solo_dev->slock); 346 INIT_LIST_HEAD(&solo_dev->vidq_active); 347 } 348 349 static void solo_buf_queue(struct vb2_buffer *vb) 350 { 351 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 352 struct vb2_queue *vq = vb->vb2_queue; 353 struct solo_dev *solo_dev = vb2_get_drv_priv(vq); 354 struct solo_vb2_buf *solo_vb = 355 container_of(vbuf, struct solo_vb2_buf, vb); 356 357 spin_lock(&solo_dev->slock); 358 list_add_tail(&solo_vb->list, &solo_dev->vidq_active); 359 spin_unlock(&solo_dev->slock); 360 wake_up_interruptible(&solo_dev->disp_thread_wait); 361 } 362 363 static const struct vb2_ops solo_video_qops = { 364 .queue_setup = solo_queue_setup, 365 .buf_queue = solo_buf_queue, 366 .start_streaming = solo_start_streaming, 367 .stop_streaming = solo_stop_streaming, 368 .wait_prepare = vb2_ops_wait_prepare, 369 .wait_finish = vb2_ops_wait_finish, 370 }; 371 372 static int solo_querycap(struct file *file, void *priv, 373 struct v4l2_capability *cap) 374 { 375 strscpy(cap->driver, SOLO6X10_NAME, sizeof(cap->driver)); 376 strscpy(cap->card, "Softlogic 6x10", sizeof(cap->card)); 377 return 0; 378 } 379 380 static int solo_enum_ext_input(struct solo_dev *solo_dev, 381 struct v4l2_input *input) 382 { 383 int ext = input->index - solo_dev->nr_chans; 384 unsigned int nup, first; 385 386 if (ext >= solo_dev->nr_ext) 387 return -EINVAL; 388 389 nup = (ext == 4) ? 16 : 4; 390 first = (ext & 3) << 2; /* first channel in the n-up */ 391 snprintf(input->name, sizeof(input->name), 392 "Multi %d-up (cameras %d-%d)", 393 nup, first + 1, first + nup); 394 /* Possible outputs: 395 * Multi 4-up (cameras 1-4) 396 * Multi 4-up (cameras 5-8) 397 * Multi 4-up (cameras 9-12) 398 * Multi 4-up (cameras 13-16) 399 * Multi 16-up (cameras 1-16) 400 */ 401 return 0; 402 } 403 404 static int solo_enum_input(struct file *file, void *priv, 405 struct v4l2_input *input) 406 { 407 struct solo_dev *solo_dev = video_drvdata(file); 408 409 if (input->index >= solo_dev->nr_chans) { 410 int ret = solo_enum_ext_input(solo_dev, input); 411 412 if (ret < 0) 413 return ret; 414 } else { 415 snprintf(input->name, sizeof(input->name), "Camera %d", 416 input->index + 1); 417 418 /* We can only check this for normal inputs */ 419 if (!tw28_get_video_status(solo_dev, input->index)) 420 input->status = V4L2_IN_ST_NO_SIGNAL; 421 } 422 423 input->type = V4L2_INPUT_TYPE_CAMERA; 424 input->std = solo_dev->vfd->tvnorms; 425 return 0; 426 } 427 428 static int solo_set_input(struct file *file, void *priv, unsigned int index) 429 { 430 struct solo_dev *solo_dev = video_drvdata(file); 431 int ret = solo_v4l2_set_ch(solo_dev, index); 432 433 if (!ret) { 434 while (erase_off(solo_dev)) 435 /* Do nothing */; 436 } 437 438 return ret; 439 } 440 441 static int solo_get_input(struct file *file, void *priv, unsigned int *index) 442 { 443 struct solo_dev *solo_dev = video_drvdata(file); 444 445 *index = solo_dev->cur_disp_ch; 446 447 return 0; 448 } 449 450 static int solo_enum_fmt_cap(struct file *file, void *priv, 451 struct v4l2_fmtdesc *f) 452 { 453 if (f->index) 454 return -EINVAL; 455 456 f->pixelformat = V4L2_PIX_FMT_UYVY; 457 return 0; 458 } 459 460 static int solo_try_fmt_cap(struct file *file, void *priv, 461 struct v4l2_format *f) 462 { 463 struct solo_dev *solo_dev = video_drvdata(file); 464 struct v4l2_pix_format *pix = &f->fmt.pix; 465 int image_size = solo_image_size(solo_dev); 466 467 if (pix->pixelformat != V4L2_PIX_FMT_UYVY) 468 return -EINVAL; 469 470 pix->width = solo_dev->video_hsize; 471 pix->height = solo_vlines(solo_dev); 472 pix->sizeimage = image_size; 473 pix->field = V4L2_FIELD_INTERLACED; 474 pix->pixelformat = V4L2_PIX_FMT_UYVY; 475 pix->colorspace = V4L2_COLORSPACE_SMPTE170M; 476 return 0; 477 } 478 479 static int solo_set_fmt_cap(struct file *file, void *priv, 480 struct v4l2_format *f) 481 { 482 struct solo_dev *solo_dev = video_drvdata(file); 483 484 if (vb2_is_busy(&solo_dev->vidq)) 485 return -EBUSY; 486 487 /* For right now, if it doesn't match our running config, 488 * then fail */ 489 return solo_try_fmt_cap(file, priv, f); 490 } 491 492 static int solo_get_fmt_cap(struct file *file, void *priv, 493 struct v4l2_format *f) 494 { 495 struct solo_dev *solo_dev = video_drvdata(file); 496 struct v4l2_pix_format *pix = &f->fmt.pix; 497 498 pix->width = solo_dev->video_hsize; 499 pix->height = solo_vlines(solo_dev); 500 pix->pixelformat = V4L2_PIX_FMT_UYVY; 501 pix->field = V4L2_FIELD_INTERLACED; 502 pix->sizeimage = solo_image_size(solo_dev); 503 pix->colorspace = V4L2_COLORSPACE_SMPTE170M; 504 pix->bytesperline = solo_bytesperline(solo_dev); 505 506 return 0; 507 } 508 509 static int solo_g_std(struct file *file, void *priv, v4l2_std_id *i) 510 { 511 struct solo_dev *solo_dev = video_drvdata(file); 512 513 if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) 514 *i = V4L2_STD_NTSC_M; 515 else 516 *i = V4L2_STD_PAL; 517 return 0; 518 } 519 520 int solo_set_video_type(struct solo_dev *solo_dev, bool is_50hz) 521 { 522 int i; 523 524 /* Make sure all video nodes are idle */ 525 if (vb2_is_busy(&solo_dev->vidq)) 526 return -EBUSY; 527 for (i = 0; i < solo_dev->nr_chans; i++) 528 if (vb2_is_busy(&solo_dev->v4l2_enc[i]->vidq)) 529 return -EBUSY; 530 solo_dev->video_type = is_50hz ? SOLO_VO_FMT_TYPE_PAL : 531 SOLO_VO_FMT_TYPE_NTSC; 532 /* Reconfigure for the new standard */ 533 solo_disp_init(solo_dev); 534 solo_enc_init(solo_dev); 535 solo_tw28_init(solo_dev); 536 for (i = 0; i < solo_dev->nr_chans; i++) 537 solo_update_mode(solo_dev->v4l2_enc[i]); 538 return solo_v4l2_set_ch(solo_dev, solo_dev->cur_disp_ch); 539 } 540 541 static int solo_s_std(struct file *file, void *priv, v4l2_std_id std) 542 { 543 struct solo_dev *solo_dev = video_drvdata(file); 544 545 return solo_set_video_type(solo_dev, std & V4L2_STD_625_50); 546 } 547 548 static int solo_s_ctrl(struct v4l2_ctrl *ctrl) 549 { 550 struct solo_dev *solo_dev = 551 container_of(ctrl->handler, struct solo_dev, disp_hdl); 552 553 switch (ctrl->id) { 554 case V4L2_CID_MOTION_TRACE: 555 if (ctrl->val) { 556 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 557 SOLO_VI_MOTION_Y_ADD | 558 SOLO_VI_MOTION_Y_VALUE(0x20) | 559 SOLO_VI_MOTION_CB_VALUE(0x10) | 560 SOLO_VI_MOTION_CR_VALUE(0x10)); 561 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 562 SOLO_VI_MOTION_CR_ADD | 563 SOLO_VI_MOTION_Y_VALUE(0x10) | 564 SOLO_VI_MOTION_CB_VALUE(0x80) | 565 SOLO_VI_MOTION_CR_VALUE(0x10)); 566 } else { 567 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0); 568 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0); 569 } 570 return 0; 571 default: 572 break; 573 } 574 return -EINVAL; 575 } 576 577 static const struct v4l2_file_operations solo_v4l2_fops = { 578 .owner = THIS_MODULE, 579 .open = v4l2_fh_open, 580 .release = vb2_fop_release, 581 .read = vb2_fop_read, 582 .poll = vb2_fop_poll, 583 .mmap = vb2_fop_mmap, 584 .unlocked_ioctl = video_ioctl2, 585 }; 586 587 static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = { 588 .vidioc_querycap = solo_querycap, 589 .vidioc_s_std = solo_s_std, 590 .vidioc_g_std = solo_g_std, 591 /* Input callbacks */ 592 .vidioc_enum_input = solo_enum_input, 593 .vidioc_s_input = solo_set_input, 594 .vidioc_g_input = solo_get_input, 595 /* Video capture format callbacks */ 596 .vidioc_enum_fmt_vid_cap = solo_enum_fmt_cap, 597 .vidioc_try_fmt_vid_cap = solo_try_fmt_cap, 598 .vidioc_s_fmt_vid_cap = solo_set_fmt_cap, 599 .vidioc_g_fmt_vid_cap = solo_get_fmt_cap, 600 /* Streaming I/O */ 601 .vidioc_reqbufs = vb2_ioctl_reqbufs, 602 .vidioc_querybuf = vb2_ioctl_querybuf, 603 .vidioc_qbuf = vb2_ioctl_qbuf, 604 .vidioc_dqbuf = vb2_ioctl_dqbuf, 605 .vidioc_streamon = vb2_ioctl_streamon, 606 .vidioc_streamoff = vb2_ioctl_streamoff, 607 /* Logging and events */ 608 .vidioc_log_status = v4l2_ctrl_log_status, 609 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 610 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 611 }; 612 613 static const struct video_device solo_v4l2_template = { 614 .name = SOLO6X10_NAME, 615 .fops = &solo_v4l2_fops, 616 .ioctl_ops = &solo_v4l2_ioctl_ops, 617 .minor = -1, 618 .release = video_device_release, 619 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL, 620 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 621 V4L2_CAP_STREAMING, 622 }; 623 624 static const struct v4l2_ctrl_ops solo_ctrl_ops = { 625 .s_ctrl = solo_s_ctrl, 626 }; 627 628 static const struct v4l2_ctrl_config solo_motion_trace_ctrl = { 629 .ops = &solo_ctrl_ops, 630 .id = V4L2_CID_MOTION_TRACE, 631 .name = "Motion Detection Trace", 632 .type = V4L2_CTRL_TYPE_BOOLEAN, 633 .max = 1, 634 .step = 1, 635 }; 636 637 int solo_v4l2_init(struct solo_dev *solo_dev, unsigned nr) 638 { 639 int ret; 640 int i; 641 642 init_waitqueue_head(&solo_dev->disp_thread_wait); 643 spin_lock_init(&solo_dev->slock); 644 mutex_init(&solo_dev->lock); 645 INIT_LIST_HEAD(&solo_dev->vidq_active); 646 647 solo_dev->vfd = video_device_alloc(); 648 if (!solo_dev->vfd) 649 return -ENOMEM; 650 651 *solo_dev->vfd = solo_v4l2_template; 652 solo_dev->vfd->v4l2_dev = &solo_dev->v4l2_dev; 653 solo_dev->vfd->queue = &solo_dev->vidq; 654 solo_dev->vfd->lock = &solo_dev->lock; 655 v4l2_ctrl_handler_init(&solo_dev->disp_hdl, 1); 656 v4l2_ctrl_new_custom(&solo_dev->disp_hdl, &solo_motion_trace_ctrl, NULL); 657 if (solo_dev->disp_hdl.error) { 658 ret = solo_dev->disp_hdl.error; 659 goto fail; 660 } 661 solo_dev->vfd->ctrl_handler = &solo_dev->disp_hdl; 662 663 video_set_drvdata(solo_dev->vfd, solo_dev); 664 665 solo_dev->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 666 solo_dev->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; 667 solo_dev->vidq.ops = &solo_video_qops; 668 solo_dev->vidq.mem_ops = &vb2_dma_contig_memops; 669 solo_dev->vidq.drv_priv = solo_dev; 670 solo_dev->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 671 solo_dev->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM; 672 solo_dev->vidq.buf_struct_size = sizeof(struct solo_vb2_buf); 673 solo_dev->vidq.lock = &solo_dev->lock; 674 solo_dev->vidq.dev = &solo_dev->pdev->dev; 675 ret = vb2_queue_init(&solo_dev->vidq); 676 if (ret < 0) 677 goto fail; 678 679 /* Cycle all the channels and clear */ 680 for (i = 0; i < solo_dev->nr_chans; i++) { 681 solo_v4l2_set_ch(solo_dev, i); 682 while (erase_off(solo_dev)) 683 /* Do nothing */; 684 } 685 686 /* Set the default display channel */ 687 solo_v4l2_set_ch(solo_dev, 0); 688 while (erase_off(solo_dev)) 689 /* Do nothing */; 690 691 ret = video_register_device(solo_dev->vfd, VFL_TYPE_VIDEO, nr); 692 if (ret < 0) 693 goto fail; 694 695 snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)", 696 SOLO6X10_NAME, solo_dev->vfd->num); 697 698 dev_info(&solo_dev->pdev->dev, "Display as /dev/video%d with %d inputs (%d extended)\n", 699 solo_dev->vfd->num, 700 solo_dev->nr_chans, solo_dev->nr_ext); 701 702 return 0; 703 704 fail: 705 video_device_release(solo_dev->vfd); 706 v4l2_ctrl_handler_free(&solo_dev->disp_hdl); 707 solo_dev->vfd = NULL; 708 return ret; 709 } 710 711 void solo_v4l2_exit(struct solo_dev *solo_dev) 712 { 713 if (solo_dev->vfd == NULL) 714 return; 715 716 video_unregister_device(solo_dev->vfd); 717 v4l2_ctrl_handler_free(&solo_dev->disp_hdl); 718 solo_dev->vfd = NULL; 719 } 720