1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Driver for the Conexant CX25821 PCIe bridge 4 * 5 * Copyright (C) 2009 Conexant Systems Inc. 6 * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> 7 * Based on Steven Toth <stoth@linuxtv.org> cx25821 driver 8 * Parts adapted/taken from Eduardo Moscoso Rubino 9 * Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com> 10 */ 11 12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 13 14 #include "cx25821-video.h" 15 16 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards"); 17 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>"); 18 MODULE_LICENSE("GPL"); 19 20 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET }; 21 22 module_param_array(video_nr, int, NULL, 0444); 23 24 MODULE_PARM_DESC(video_nr, "video device numbers"); 25 26 static unsigned int video_debug = VIDEO_DEBUG; 27 module_param(video_debug, int, 0644); 28 MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); 29 30 static unsigned int irq_debug; 31 module_param(irq_debug, int, 0644); 32 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]"); 33 34 #define FORMAT_FLAGS_PACKED 0x01 35 36 static const struct cx25821_fmt formats[] = { 37 { 38 .name = "4:1:1, packed, Y41P", 39 .fourcc = V4L2_PIX_FMT_Y41P, 40 .depth = 12, 41 .flags = FORMAT_FLAGS_PACKED, 42 }, { 43 .name = "4:2:2, packed, YUYV", 44 .fourcc = V4L2_PIX_FMT_YUYV, 45 .depth = 16, 46 .flags = FORMAT_FLAGS_PACKED, 47 }, 48 }; 49 50 static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc) 51 { 52 unsigned int i; 53 54 for (i = 0; i < ARRAY_SIZE(formats); i++) 55 if (formats[i].fourcc == fourcc) 56 return formats + i; 57 return NULL; 58 } 59 60 int cx25821_start_video_dma(struct cx25821_dev *dev, 61 struct cx25821_dmaqueue *q, 62 struct cx25821_buffer *buf, 63 const struct sram_channel *channel) 64 { 65 int tmp = 0; 66 67 /* setup fifo + format */ 68 cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma); 69 70 /* reset counter */ 71 cx_write(channel->gpcnt_ctl, 3); 72 73 /* enable irq */ 74 cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i)); 75 cx_set(channel->int_msk, 0x11); 76 77 /* start dma */ 78 cx_write(channel->dma_ctl, 0x11); /* FIFO and RISC enable */ 79 80 /* make sure upstream setting if any is reversed */ 81 tmp = cx_read(VID_CH_MODE_SEL); 82 cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00); 83 84 return 0; 85 } 86 87 int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status) 88 { 89 int handled = 0; 90 u32 mask; 91 const struct sram_channel *channel = dev->channels[chan_num].sram_channels; 92 93 mask = cx_read(channel->int_msk); 94 if (0 == (status & mask)) 95 return handled; 96 97 cx_write(channel->int_stat, status); 98 99 /* risc op code error */ 100 if (status & (1 << 16)) { 101 pr_warn("%s, %s: video risc op code error\n", 102 dev->name, channel->name); 103 cx_clear(channel->dma_ctl, 0x11); 104 cx25821_sram_channel_dump(dev, channel); 105 } 106 107 /* risc1 y */ 108 if (status & FLD_VID_DST_RISC1) { 109 struct cx25821_dmaqueue *dmaq = 110 &dev->channels[channel->i].dma_vidq; 111 struct cx25821_buffer *buf; 112 113 spin_lock(&dev->slock); 114 if (!list_empty(&dmaq->active)) { 115 buf = list_entry(dmaq->active.next, 116 struct cx25821_buffer, queue); 117 118 buf->vb.vb2_buf.timestamp = ktime_get_ns(); 119 buf->vb.sequence = dmaq->count++; 120 list_del(&buf->queue); 121 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); 122 } 123 spin_unlock(&dev->slock); 124 handled++; 125 } 126 return handled; 127 } 128 129 static int cx25821_queue_setup(struct vb2_queue *q, 130 unsigned int *num_buffers, unsigned int *num_planes, 131 unsigned int sizes[], struct device *alloc_devs[]) 132 { 133 struct cx25821_channel *chan = q->drv_priv; 134 unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3; 135 136 if (*num_planes) 137 return sizes[0] < size ? -EINVAL : 0; 138 139 *num_planes = 1; 140 sizes[0] = size; 141 return 0; 142 } 143 144 static int cx25821_buffer_prepare(struct vb2_buffer *vb) 145 { 146 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 147 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 148 struct cx25821_dev *dev = chan->dev; 149 struct cx25821_buffer *buf = 150 container_of(vbuf, struct cx25821_buffer, vb); 151 struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0); 152 u32 line0_offset; 153 int bpl_local = LINE_SIZE_D1; 154 int ret; 155 156 if (chan->pixel_formats == PIXEL_FRMT_411) 157 buf->bpl = (chan->fmt->depth * chan->width) >> 3; 158 else 159 buf->bpl = (chan->fmt->depth >> 3) * chan->width; 160 161 if (vb2_plane_size(vb, 0) < chan->height * buf->bpl) 162 return -EINVAL; 163 vb2_set_plane_payload(vb, 0, chan->height * buf->bpl); 164 buf->vb.field = chan->field; 165 166 if (chan->pixel_formats == PIXEL_FRMT_411) { 167 bpl_local = buf->bpl; 168 } else { 169 bpl_local = buf->bpl; /* Default */ 170 171 if (chan->use_cif_resolution) { 172 if (dev->tvnorm & V4L2_STD_625_50) 173 bpl_local = 352 << 1; 174 else 175 bpl_local = chan->cif_width << 1; 176 } 177 } 178 179 switch (chan->field) { 180 case V4L2_FIELD_TOP: 181 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 182 sgt->sgl, 0, UNSET, 183 buf->bpl, 0, chan->height); 184 break; 185 case V4L2_FIELD_BOTTOM: 186 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 187 sgt->sgl, UNSET, 0, 188 buf->bpl, 0, chan->height); 189 break; 190 case V4L2_FIELD_INTERLACED: 191 /* All other formats are top field first */ 192 line0_offset = 0; 193 dprintk(1, "top field first\n"); 194 195 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 196 sgt->sgl, line0_offset, 197 bpl_local, bpl_local, bpl_local, 198 chan->height >> 1); 199 break; 200 case V4L2_FIELD_SEQ_TB: 201 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 202 sgt->sgl, 203 0, buf->bpl * (chan->height >> 1), 204 buf->bpl, 0, chan->height >> 1); 205 break; 206 case V4L2_FIELD_SEQ_BT: 207 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 208 sgt->sgl, 209 buf->bpl * (chan->height >> 1), 0, 210 buf->bpl, 0, chan->height >> 1); 211 break; 212 default: 213 WARN_ON(1); 214 ret = -EINVAL; 215 break; 216 } 217 218 dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n", 219 buf, buf->vb.vb2_buf.index, chan->width, chan->height, 220 chan->fmt->depth, chan->fmt->name, 221 (unsigned long)buf->risc.dma); 222 223 return ret; 224 } 225 226 static void cx25821_buffer_finish(struct vb2_buffer *vb) 227 { 228 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 229 struct cx25821_buffer *buf = 230 container_of(vbuf, struct cx25821_buffer, vb); 231 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 232 struct cx25821_dev *dev = chan->dev; 233 234 cx25821_free_buffer(dev, buf); 235 } 236 237 static void cx25821_buffer_queue(struct vb2_buffer *vb) 238 { 239 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 240 struct cx25821_buffer *buf = 241 container_of(vbuf, struct cx25821_buffer, vb); 242 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 243 struct cx25821_dev *dev = chan->dev; 244 struct cx25821_buffer *prev; 245 struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq; 246 247 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12); 248 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); 249 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12); 250 buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ 251 252 if (list_empty(&q->active)) { 253 list_add_tail(&buf->queue, &q->active); 254 } else { 255 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); 256 prev = list_entry(q->active.prev, struct cx25821_buffer, 257 queue); 258 list_add_tail(&buf->queue, &q->active); 259 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 260 } 261 } 262 263 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count) 264 { 265 struct cx25821_channel *chan = q->drv_priv; 266 struct cx25821_dev *dev = chan->dev; 267 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq; 268 struct cx25821_buffer *buf = list_entry(dmaq->active.next, 269 struct cx25821_buffer, queue); 270 271 dmaq->count = 0; 272 cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels); 273 return 0; 274 } 275 276 static void cx25821_stop_streaming(struct vb2_queue *q) 277 { 278 struct cx25821_channel *chan = q->drv_priv; 279 struct cx25821_dev *dev = chan->dev; 280 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq; 281 unsigned long flags; 282 283 cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */ 284 spin_lock_irqsave(&dev->slock, flags); 285 while (!list_empty(&dmaq->active)) { 286 struct cx25821_buffer *buf = list_entry(dmaq->active.next, 287 struct cx25821_buffer, queue); 288 289 list_del(&buf->queue); 290 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 291 } 292 spin_unlock_irqrestore(&dev->slock, flags); 293 } 294 295 static const struct vb2_ops cx25821_video_qops = { 296 .queue_setup = cx25821_queue_setup, 297 .buf_prepare = cx25821_buffer_prepare, 298 .buf_finish = cx25821_buffer_finish, 299 .buf_queue = cx25821_buffer_queue, 300 .wait_prepare = vb2_ops_wait_prepare, 301 .wait_finish = vb2_ops_wait_finish, 302 .start_streaming = cx25821_start_streaming, 303 .stop_streaming = cx25821_stop_streaming, 304 }; 305 306 /* VIDEO IOCTLS */ 307 308 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 309 struct v4l2_fmtdesc *f) 310 { 311 if (unlikely(f->index >= ARRAY_SIZE(formats))) 312 return -EINVAL; 313 314 strscpy(f->description, formats[f->index].name, sizeof(f->description)); 315 f->pixelformat = formats[f->index].fourcc; 316 317 return 0; 318 } 319 320 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv, 321 struct v4l2_format *f) 322 { 323 struct cx25821_channel *chan = video_drvdata(file); 324 325 f->fmt.pix.width = chan->width; 326 f->fmt.pix.height = chan->height; 327 f->fmt.pix.field = chan->field; 328 f->fmt.pix.pixelformat = chan->fmt->fourcc; 329 f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3; 330 f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline; 331 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 332 333 return 0; 334 } 335 336 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv, 337 struct v4l2_format *f) 338 { 339 struct cx25821_channel *chan = video_drvdata(file); 340 struct cx25821_dev *dev = chan->dev; 341 const struct cx25821_fmt *fmt; 342 enum v4l2_field field = f->fmt.pix.field; 343 unsigned int maxh; 344 unsigned w; 345 346 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 347 if (NULL == fmt) 348 return -EINVAL; 349 maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 350 351 w = f->fmt.pix.width; 352 if (field != V4L2_FIELD_BOTTOM) 353 field = V4L2_FIELD_TOP; 354 if (w < 352) { 355 w = 176; 356 f->fmt.pix.height = maxh / 4; 357 } else if (w < 720) { 358 w = 352; 359 f->fmt.pix.height = maxh / 2; 360 } else { 361 w = 720; 362 f->fmt.pix.height = maxh; 363 field = V4L2_FIELD_INTERLACED; 364 } 365 f->fmt.pix.field = field; 366 f->fmt.pix.width = w; 367 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 368 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 369 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 370 371 return 0; 372 } 373 374 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 375 struct v4l2_format *f) 376 { 377 struct cx25821_channel *chan = video_drvdata(file); 378 struct cx25821_dev *dev = chan->dev; 379 int pix_format = PIXEL_FRMT_422; 380 int err; 381 382 err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f); 383 384 if (0 != err) 385 return err; 386 387 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 388 chan->field = f->fmt.pix.field; 389 chan->width = f->fmt.pix.width; 390 chan->height = f->fmt.pix.height; 391 392 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 393 pix_format = PIXEL_FRMT_411; 394 else 395 pix_format = PIXEL_FRMT_422; 396 397 cx25821_set_pixel_format(dev, SRAM_CH00, pix_format); 398 399 /* check if cif resolution */ 400 if (chan->width == 320 || chan->width == 352) 401 chan->use_cif_resolution = 1; 402 else 403 chan->use_cif_resolution = 0; 404 405 chan->cif_width = chan->width; 406 medusa_set_resolution(dev, chan->width, SRAM_CH00); 407 return 0; 408 } 409 410 static int vidioc_log_status(struct file *file, void *priv) 411 { 412 struct cx25821_channel *chan = video_drvdata(file); 413 struct cx25821_dev *dev = chan->dev; 414 const struct sram_channel *sram_ch = chan->sram_channels; 415 u32 tmp = 0; 416 417 tmp = cx_read(sram_ch->dma_ctl); 418 pr_info("Video input 0 is %s\n", 419 (tmp & 0x11) ? "streaming" : "stopped"); 420 return 0; 421 } 422 423 424 static int cx25821_vidioc_querycap(struct file *file, void *priv, 425 struct v4l2_capability *cap) 426 { 427 struct cx25821_channel *chan = video_drvdata(file); 428 struct cx25821_dev *dev = chan->dev; 429 430 strscpy(cap->driver, "cx25821", sizeof(cap->driver)); 431 strscpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card)); 432 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci)); 433 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | 434 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | 435 V4L2_CAP_DEVICE_CAPS; 436 return 0; 437 } 438 439 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms) 440 { 441 struct cx25821_channel *chan = video_drvdata(file); 442 443 *tvnorms = chan->dev->tvnorm; 444 return 0; 445 } 446 447 static int cx25821_vidioc_s_std(struct file *file, void *priv, 448 v4l2_std_id tvnorms) 449 { 450 struct cx25821_channel *chan = video_drvdata(file); 451 struct cx25821_dev *dev = chan->dev; 452 453 if (dev->tvnorm == tvnorms) 454 return 0; 455 456 dev->tvnorm = tvnorms; 457 chan->width = 720; 458 chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 459 460 medusa_set_videostandard(dev); 461 462 return 0; 463 } 464 465 static int cx25821_vidioc_enum_input(struct file *file, void *priv, 466 struct v4l2_input *i) 467 { 468 if (i->index) 469 return -EINVAL; 470 471 i->type = V4L2_INPUT_TYPE_CAMERA; 472 i->std = CX25821_NORMS; 473 strscpy(i->name, "Composite", sizeof(i->name)); 474 return 0; 475 } 476 477 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i) 478 { 479 *i = 0; 480 return 0; 481 } 482 483 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i) 484 { 485 return i ? -EINVAL : 0; 486 } 487 488 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl) 489 { 490 struct cx25821_channel *chan = 491 container_of(ctrl->handler, struct cx25821_channel, hdl); 492 struct cx25821_dev *dev = chan->dev; 493 494 switch (ctrl->id) { 495 case V4L2_CID_BRIGHTNESS: 496 medusa_set_brightness(dev, ctrl->val, chan->id); 497 break; 498 case V4L2_CID_HUE: 499 medusa_set_hue(dev, ctrl->val, chan->id); 500 break; 501 case V4L2_CID_CONTRAST: 502 medusa_set_contrast(dev, ctrl->val, chan->id); 503 break; 504 case V4L2_CID_SATURATION: 505 medusa_set_saturation(dev, ctrl->val, chan->id); 506 break; 507 default: 508 return -EINVAL; 509 } 510 return 0; 511 } 512 513 static int cx25821_vidioc_enum_output(struct file *file, void *priv, 514 struct v4l2_output *o) 515 { 516 if (o->index) 517 return -EINVAL; 518 519 o->type = V4L2_INPUT_TYPE_CAMERA; 520 o->std = CX25821_NORMS; 521 strscpy(o->name, "Composite", sizeof(o->name)); 522 return 0; 523 } 524 525 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o) 526 { 527 *o = 0; 528 return 0; 529 } 530 531 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o) 532 { 533 return o ? -EINVAL : 0; 534 } 535 536 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv, 537 struct v4l2_format *f) 538 { 539 struct cx25821_channel *chan = video_drvdata(file); 540 struct cx25821_dev *dev = chan->dev; 541 const struct cx25821_fmt *fmt; 542 543 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 544 if (NULL == fmt) 545 return -EINVAL; 546 f->fmt.pix.width = 720; 547 f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 548 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 549 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 550 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 551 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 552 return 0; 553 } 554 555 static int vidioc_s_fmt_vid_out(struct file *file, void *priv, 556 struct v4l2_format *f) 557 { 558 struct cx25821_channel *chan = video_drvdata(file); 559 int err; 560 561 err = cx25821_vidioc_try_fmt_vid_out(file, priv, f); 562 563 if (0 != err) 564 return err; 565 566 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 567 chan->field = f->fmt.pix.field; 568 chan->width = f->fmt.pix.width; 569 chan->height = f->fmt.pix.height; 570 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 571 chan->pixel_formats = PIXEL_FRMT_411; 572 else 573 chan->pixel_formats = PIXEL_FRMT_422; 574 return 0; 575 } 576 577 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = { 578 .s_ctrl = cx25821_s_ctrl, 579 }; 580 581 static const struct v4l2_file_operations video_fops = { 582 .owner = THIS_MODULE, 583 .open = v4l2_fh_open, 584 .release = vb2_fop_release, 585 .read = vb2_fop_read, 586 .poll = vb2_fop_poll, 587 .unlocked_ioctl = video_ioctl2, 588 .mmap = vb2_fop_mmap, 589 }; 590 591 static const struct v4l2_ioctl_ops video_ioctl_ops = { 592 .vidioc_querycap = cx25821_vidioc_querycap, 593 .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap, 594 .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap, 595 .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap, 596 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 597 .vidioc_reqbufs = vb2_ioctl_reqbufs, 598 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 599 .vidioc_create_bufs = vb2_ioctl_create_bufs, 600 .vidioc_querybuf = vb2_ioctl_querybuf, 601 .vidioc_qbuf = vb2_ioctl_qbuf, 602 .vidioc_dqbuf = vb2_ioctl_dqbuf, 603 .vidioc_streamon = vb2_ioctl_streamon, 604 .vidioc_streamoff = vb2_ioctl_streamoff, 605 .vidioc_g_std = cx25821_vidioc_g_std, 606 .vidioc_s_std = cx25821_vidioc_s_std, 607 .vidioc_enum_input = cx25821_vidioc_enum_input, 608 .vidioc_g_input = cx25821_vidioc_g_input, 609 .vidioc_s_input = cx25821_vidioc_s_input, 610 .vidioc_log_status = vidioc_log_status, 611 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 612 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 613 }; 614 615 static const struct video_device cx25821_video_device = { 616 .name = "cx25821-video", 617 .fops = &video_fops, 618 .release = video_device_release_empty, 619 .minor = -1, 620 .ioctl_ops = &video_ioctl_ops, 621 .tvnorms = CX25821_NORMS, 622 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 623 V4L2_CAP_STREAMING, 624 }; 625 626 static const struct v4l2_file_operations video_out_fops = { 627 .owner = THIS_MODULE, 628 .open = v4l2_fh_open, 629 .release = vb2_fop_release, 630 .write = vb2_fop_write, 631 .poll = vb2_fop_poll, 632 .unlocked_ioctl = video_ioctl2, 633 .mmap = vb2_fop_mmap, 634 }; 635 636 static const struct v4l2_ioctl_ops video_out_ioctl_ops = { 637 .vidioc_querycap = cx25821_vidioc_querycap, 638 .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap, 639 .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap, 640 .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out, 641 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, 642 .vidioc_g_std = cx25821_vidioc_g_std, 643 .vidioc_s_std = cx25821_vidioc_s_std, 644 .vidioc_enum_output = cx25821_vidioc_enum_output, 645 .vidioc_g_output = cx25821_vidioc_g_output, 646 .vidioc_s_output = cx25821_vidioc_s_output, 647 .vidioc_log_status = vidioc_log_status, 648 }; 649 650 static const struct video_device cx25821_video_out_device = { 651 .name = "cx25821-video", 652 .fops = &video_out_fops, 653 .release = video_device_release_empty, 654 .minor = -1, 655 .ioctl_ops = &video_out_ioctl_ops, 656 .tvnorms = CX25821_NORMS, 657 .device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE, 658 }; 659 660 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num) 661 { 662 cx_clear(PCI_INT_MSK, 1); 663 664 if (video_is_registered(&dev->channels[chan_num].vdev)) { 665 video_unregister_device(&dev->channels[chan_num].vdev); 666 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl); 667 } 668 } 669 670 int cx25821_video_register(struct cx25821_dev *dev) 671 { 672 int err; 673 int i; 674 675 /* initial device configuration */ 676 dev->tvnorm = V4L2_STD_NTSC_M; 677 678 spin_lock_init(&dev->slock); 679 680 for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) { 681 struct cx25821_channel *chan = &dev->channels[i]; 682 struct video_device *vdev = &chan->vdev; 683 struct v4l2_ctrl_handler *hdl = &chan->hdl; 684 struct vb2_queue *q; 685 bool is_output = i > SRAM_CH08; 686 687 if (i == SRAM_CH08) /* audio channel */ 688 continue; 689 690 if (!is_output) { 691 v4l2_ctrl_handler_init(hdl, 4); 692 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 693 V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200); 694 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 695 V4L2_CID_CONTRAST, 0, 10000, 1, 5000); 696 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 697 V4L2_CID_SATURATION, 0, 10000, 1, 5000); 698 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 699 V4L2_CID_HUE, 0, 10000, 1, 5000); 700 if (hdl->error) { 701 err = hdl->error; 702 goto fail_unreg; 703 } 704 err = v4l2_ctrl_handler_setup(hdl); 705 if (err) 706 goto fail_unreg; 707 } else { 708 chan->out = &dev->vid_out_data[i - SRAM_CH09]; 709 chan->out->chan = chan; 710 } 711 712 chan->sram_channels = &cx25821_sram_channels[i]; 713 chan->width = 720; 714 chan->field = V4L2_FIELD_INTERLACED; 715 if (dev->tvnorm & V4L2_STD_625_50) 716 chan->height = 576; 717 else 718 chan->height = 480; 719 720 if (chan->pixel_formats == PIXEL_FRMT_411) 721 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P); 722 else 723 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV); 724 725 cx_write(chan->sram_channels->int_stat, 0xffffffff); 726 727 INIT_LIST_HEAD(&chan->dma_vidq.active); 728 729 q = &chan->vidq; 730 731 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT : 732 V4L2_BUF_TYPE_VIDEO_CAPTURE; 733 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 734 q->io_modes |= is_output ? VB2_WRITE : VB2_READ; 735 q->gfp_flags = GFP_DMA32; 736 q->min_buffers_needed = 2; 737 q->drv_priv = chan; 738 q->buf_struct_size = sizeof(struct cx25821_buffer); 739 q->ops = &cx25821_video_qops; 740 q->mem_ops = &vb2_dma_sg_memops; 741 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 742 q->lock = &dev->lock; 743 q->dev = &dev->pci->dev; 744 745 if (!is_output) { 746 err = vb2_queue_init(q); 747 if (err < 0) 748 goto fail_unreg; 749 } 750 751 /* register v4l devices */ 752 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device; 753 vdev->v4l2_dev = &dev->v4l2_dev; 754 if (!is_output) 755 vdev->ctrl_handler = hdl; 756 else 757 vdev->vfl_dir = VFL_DIR_TX; 758 vdev->lock = &dev->lock; 759 vdev->queue = q; 760 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i); 761 video_set_drvdata(vdev, chan); 762 763 err = video_register_device(vdev, VFL_TYPE_GRABBER, 764 video_nr[dev->nr]); 765 766 if (err < 0) 767 goto fail_unreg; 768 } 769 770 /* set PCI interrupt */ 771 cx_set(PCI_INT_MSK, 0xff); 772 773 return 0; 774 775 fail_unreg: 776 while (i >= 0) 777 cx25821_video_unregister(dev, i--); 778 return err; 779 } 780