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 const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE | 430 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; 431 const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE; 432 433 strscpy(cap->driver, "cx25821", sizeof(cap->driver)); 434 strscpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card)); 435 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci)); 436 if (chan->id >= VID_CHANNEL_NUM) 437 cap->device_caps = cap_output; 438 else 439 cap->device_caps = cap_input; 440 cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS; 441 return 0; 442 } 443 444 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms) 445 { 446 struct cx25821_channel *chan = video_drvdata(file); 447 448 *tvnorms = chan->dev->tvnorm; 449 return 0; 450 } 451 452 static int cx25821_vidioc_s_std(struct file *file, void *priv, 453 v4l2_std_id tvnorms) 454 { 455 struct cx25821_channel *chan = video_drvdata(file); 456 struct cx25821_dev *dev = chan->dev; 457 458 if (dev->tvnorm == tvnorms) 459 return 0; 460 461 dev->tvnorm = tvnorms; 462 chan->width = 720; 463 chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 464 465 medusa_set_videostandard(dev); 466 467 return 0; 468 } 469 470 static int cx25821_vidioc_enum_input(struct file *file, void *priv, 471 struct v4l2_input *i) 472 { 473 if (i->index) 474 return -EINVAL; 475 476 i->type = V4L2_INPUT_TYPE_CAMERA; 477 i->std = CX25821_NORMS; 478 strscpy(i->name, "Composite", sizeof(i->name)); 479 return 0; 480 } 481 482 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i) 483 { 484 *i = 0; 485 return 0; 486 } 487 488 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i) 489 { 490 return i ? -EINVAL : 0; 491 } 492 493 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl) 494 { 495 struct cx25821_channel *chan = 496 container_of(ctrl->handler, struct cx25821_channel, hdl); 497 struct cx25821_dev *dev = chan->dev; 498 499 switch (ctrl->id) { 500 case V4L2_CID_BRIGHTNESS: 501 medusa_set_brightness(dev, ctrl->val, chan->id); 502 break; 503 case V4L2_CID_HUE: 504 medusa_set_hue(dev, ctrl->val, chan->id); 505 break; 506 case V4L2_CID_CONTRAST: 507 medusa_set_contrast(dev, ctrl->val, chan->id); 508 break; 509 case V4L2_CID_SATURATION: 510 medusa_set_saturation(dev, ctrl->val, chan->id); 511 break; 512 default: 513 return -EINVAL; 514 } 515 return 0; 516 } 517 518 static int cx25821_vidioc_enum_output(struct file *file, void *priv, 519 struct v4l2_output *o) 520 { 521 if (o->index) 522 return -EINVAL; 523 524 o->type = V4L2_INPUT_TYPE_CAMERA; 525 o->std = CX25821_NORMS; 526 strscpy(o->name, "Composite", sizeof(o->name)); 527 return 0; 528 } 529 530 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o) 531 { 532 *o = 0; 533 return 0; 534 } 535 536 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o) 537 { 538 return o ? -EINVAL : 0; 539 } 540 541 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv, 542 struct v4l2_format *f) 543 { 544 struct cx25821_channel *chan = video_drvdata(file); 545 struct cx25821_dev *dev = chan->dev; 546 const struct cx25821_fmt *fmt; 547 548 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 549 if (NULL == fmt) 550 return -EINVAL; 551 f->fmt.pix.width = 720; 552 f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 553 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 554 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 555 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 556 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 557 return 0; 558 } 559 560 static int vidioc_s_fmt_vid_out(struct file *file, void *priv, 561 struct v4l2_format *f) 562 { 563 struct cx25821_channel *chan = video_drvdata(file); 564 int err; 565 566 err = cx25821_vidioc_try_fmt_vid_out(file, priv, f); 567 568 if (0 != err) 569 return err; 570 571 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 572 chan->field = f->fmt.pix.field; 573 chan->width = f->fmt.pix.width; 574 chan->height = f->fmt.pix.height; 575 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 576 chan->pixel_formats = PIXEL_FRMT_411; 577 else 578 chan->pixel_formats = PIXEL_FRMT_422; 579 return 0; 580 } 581 582 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = { 583 .s_ctrl = cx25821_s_ctrl, 584 }; 585 586 static const struct v4l2_file_operations video_fops = { 587 .owner = THIS_MODULE, 588 .open = v4l2_fh_open, 589 .release = vb2_fop_release, 590 .read = vb2_fop_read, 591 .poll = vb2_fop_poll, 592 .unlocked_ioctl = video_ioctl2, 593 .mmap = vb2_fop_mmap, 594 }; 595 596 static const struct v4l2_ioctl_ops video_ioctl_ops = { 597 .vidioc_querycap = cx25821_vidioc_querycap, 598 .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap, 599 .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap, 600 .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap, 601 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 602 .vidioc_reqbufs = vb2_ioctl_reqbufs, 603 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 604 .vidioc_create_bufs = vb2_ioctl_create_bufs, 605 .vidioc_querybuf = vb2_ioctl_querybuf, 606 .vidioc_qbuf = vb2_ioctl_qbuf, 607 .vidioc_dqbuf = vb2_ioctl_dqbuf, 608 .vidioc_streamon = vb2_ioctl_streamon, 609 .vidioc_streamoff = vb2_ioctl_streamoff, 610 .vidioc_g_std = cx25821_vidioc_g_std, 611 .vidioc_s_std = cx25821_vidioc_s_std, 612 .vidioc_enum_input = cx25821_vidioc_enum_input, 613 .vidioc_g_input = cx25821_vidioc_g_input, 614 .vidioc_s_input = cx25821_vidioc_s_input, 615 .vidioc_log_status = vidioc_log_status, 616 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 617 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 618 }; 619 620 static const struct video_device cx25821_video_device = { 621 .name = "cx25821-video", 622 .fops = &video_fops, 623 .release = video_device_release_empty, 624 .minor = -1, 625 .ioctl_ops = &video_ioctl_ops, 626 .tvnorms = CX25821_NORMS, 627 }; 628 629 static const struct v4l2_file_operations video_out_fops = { 630 .owner = THIS_MODULE, 631 .open = v4l2_fh_open, 632 .release = vb2_fop_release, 633 .write = vb2_fop_write, 634 .poll = vb2_fop_poll, 635 .unlocked_ioctl = video_ioctl2, 636 .mmap = vb2_fop_mmap, 637 }; 638 639 static const struct v4l2_ioctl_ops video_out_ioctl_ops = { 640 .vidioc_querycap = cx25821_vidioc_querycap, 641 .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap, 642 .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap, 643 .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out, 644 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, 645 .vidioc_g_std = cx25821_vidioc_g_std, 646 .vidioc_s_std = cx25821_vidioc_s_std, 647 .vidioc_enum_output = cx25821_vidioc_enum_output, 648 .vidioc_g_output = cx25821_vidioc_g_output, 649 .vidioc_s_output = cx25821_vidioc_s_output, 650 .vidioc_log_status = vidioc_log_status, 651 }; 652 653 static const struct video_device cx25821_video_out_device = { 654 .name = "cx25821-video", 655 .fops = &video_out_fops, 656 .release = video_device_release_empty, 657 .minor = -1, 658 .ioctl_ops = &video_out_ioctl_ops, 659 .tvnorms = CX25821_NORMS, 660 }; 661 662 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num) 663 { 664 cx_clear(PCI_INT_MSK, 1); 665 666 if (video_is_registered(&dev->channels[chan_num].vdev)) { 667 video_unregister_device(&dev->channels[chan_num].vdev); 668 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl); 669 } 670 } 671 672 int cx25821_video_register(struct cx25821_dev *dev) 673 { 674 int err; 675 int i; 676 677 /* initial device configuration */ 678 dev->tvnorm = V4L2_STD_NTSC_M; 679 680 spin_lock_init(&dev->slock); 681 682 for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) { 683 struct cx25821_channel *chan = &dev->channels[i]; 684 struct video_device *vdev = &chan->vdev; 685 struct v4l2_ctrl_handler *hdl = &chan->hdl; 686 struct vb2_queue *q; 687 bool is_output = i > SRAM_CH08; 688 689 if (i == SRAM_CH08) /* audio channel */ 690 continue; 691 692 if (!is_output) { 693 v4l2_ctrl_handler_init(hdl, 4); 694 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 695 V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200); 696 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 697 V4L2_CID_CONTRAST, 0, 10000, 1, 5000); 698 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 699 V4L2_CID_SATURATION, 0, 10000, 1, 5000); 700 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 701 V4L2_CID_HUE, 0, 10000, 1, 5000); 702 if (hdl->error) { 703 err = hdl->error; 704 goto fail_unreg; 705 } 706 err = v4l2_ctrl_handler_setup(hdl); 707 if (err) 708 goto fail_unreg; 709 } else { 710 chan->out = &dev->vid_out_data[i - SRAM_CH09]; 711 chan->out->chan = chan; 712 } 713 714 chan->sram_channels = &cx25821_sram_channels[i]; 715 chan->width = 720; 716 chan->field = V4L2_FIELD_INTERLACED; 717 if (dev->tvnorm & V4L2_STD_625_50) 718 chan->height = 576; 719 else 720 chan->height = 480; 721 722 if (chan->pixel_formats == PIXEL_FRMT_411) 723 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P); 724 else 725 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV); 726 727 cx_write(chan->sram_channels->int_stat, 0xffffffff); 728 729 INIT_LIST_HEAD(&chan->dma_vidq.active); 730 731 q = &chan->vidq; 732 733 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT : 734 V4L2_BUF_TYPE_VIDEO_CAPTURE; 735 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 736 q->io_modes |= is_output ? VB2_WRITE : VB2_READ; 737 q->gfp_flags = GFP_DMA32; 738 q->min_buffers_needed = 2; 739 q->drv_priv = chan; 740 q->buf_struct_size = sizeof(struct cx25821_buffer); 741 q->ops = &cx25821_video_qops; 742 q->mem_ops = &vb2_dma_sg_memops; 743 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 744 q->lock = &dev->lock; 745 q->dev = &dev->pci->dev; 746 747 if (!is_output) { 748 err = vb2_queue_init(q); 749 if (err < 0) 750 goto fail_unreg; 751 } 752 753 /* register v4l devices */ 754 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device; 755 vdev->v4l2_dev = &dev->v4l2_dev; 756 if (!is_output) 757 vdev->ctrl_handler = hdl; 758 else 759 vdev->vfl_dir = VFL_DIR_TX; 760 vdev->lock = &dev->lock; 761 vdev->queue = q; 762 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i); 763 video_set_drvdata(vdev, chan); 764 765 err = video_register_device(vdev, VFL_TYPE_GRABBER, 766 video_nr[dev->nr]); 767 768 if (err < 0) 769 goto fail_unreg; 770 } 771 772 /* set PCI interrupt */ 773 cx_set(PCI_INT_MSK, 0xff); 774 775 return 0; 776 777 fail_unreg: 778 while (i >= 0) 779 cx25821_video_unregister(dev, i--); 780 return err; 781 } 782