1 /* 2 * Driver for the Conexant CX25821 PCIe bridge 3 * 4 * Copyright (C) 2009 Conexant Systems Inc. 5 * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> 6 * Based on Steven Toth <stoth@linuxtv.org> cx25821 driver 7 * Parts adapted/taken from Eduardo Moscoso Rubino 8 * Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com> 9 * 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 */ 26 27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 28 29 #include "cx25821-video.h" 30 31 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards"); 32 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>"); 33 MODULE_LICENSE("GPL"); 34 35 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET }; 36 37 module_param_array(video_nr, int, NULL, 0444); 38 39 MODULE_PARM_DESC(video_nr, "video device numbers"); 40 41 static unsigned int video_debug = VIDEO_DEBUG; 42 module_param(video_debug, int, 0644); 43 MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); 44 45 static unsigned int irq_debug; 46 module_param(irq_debug, int, 0644); 47 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]"); 48 49 #define FORMAT_FLAGS_PACKED 0x01 50 51 static const struct cx25821_fmt formats[] = { 52 { 53 .name = "4:1:1, packed, Y41P", 54 .fourcc = V4L2_PIX_FMT_Y41P, 55 .depth = 12, 56 .flags = FORMAT_FLAGS_PACKED, 57 }, { 58 .name = "4:2:2, packed, YUYV", 59 .fourcc = V4L2_PIX_FMT_YUYV, 60 .depth = 16, 61 .flags = FORMAT_FLAGS_PACKED, 62 }, 63 }; 64 65 static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc) 66 { 67 unsigned int i; 68 69 for (i = 0; i < ARRAY_SIZE(formats); i++) 70 if (formats[i].fourcc == fourcc) 71 return formats + i; 72 return NULL; 73 } 74 75 int cx25821_start_video_dma(struct cx25821_dev *dev, 76 struct cx25821_dmaqueue *q, 77 struct cx25821_buffer *buf, 78 const struct sram_channel *channel) 79 { 80 int tmp = 0; 81 82 /* setup fifo + format */ 83 cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma); 84 85 /* reset counter */ 86 cx_write(channel->gpcnt_ctl, 3); 87 88 /* enable irq */ 89 cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i)); 90 cx_set(channel->int_msk, 0x11); 91 92 /* start dma */ 93 cx_write(channel->dma_ctl, 0x11); /* FIFO and RISC enable */ 94 95 /* make sure upstream setting if any is reversed */ 96 tmp = cx_read(VID_CH_MODE_SEL); 97 cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00); 98 99 return 0; 100 } 101 102 int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status) 103 { 104 int handled = 0; 105 u32 mask; 106 const struct sram_channel *channel = dev->channels[chan_num].sram_channels; 107 108 mask = cx_read(channel->int_msk); 109 if (0 == (status & mask)) 110 return handled; 111 112 cx_write(channel->int_stat, status); 113 114 /* risc op code error */ 115 if (status & (1 << 16)) { 116 pr_warn("%s, %s: video risc op code error\n", 117 dev->name, channel->name); 118 cx_clear(channel->dma_ctl, 0x11); 119 cx25821_sram_channel_dump(dev, channel); 120 } 121 122 /* risc1 y */ 123 if (status & FLD_VID_DST_RISC1) { 124 struct cx25821_dmaqueue *dmaq = 125 &dev->channels[channel->i].dma_vidq; 126 struct cx25821_buffer *buf; 127 128 spin_lock(&dev->slock); 129 if (!list_empty(&dmaq->active)) { 130 buf = list_entry(dmaq->active.next, 131 struct cx25821_buffer, queue); 132 133 v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp); 134 buf->vb.v4l2_buf.sequence = dmaq->count++; 135 list_del(&buf->queue); 136 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE); 137 } 138 spin_unlock(&dev->slock); 139 handled++; 140 } 141 return handled; 142 } 143 144 static int cx25821_queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt, 145 unsigned int *num_buffers, unsigned int *num_planes, 146 unsigned int sizes[], void *alloc_ctxs[]) 147 { 148 struct cx25821_channel *chan = q->drv_priv; 149 unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3; 150 151 if (fmt && fmt->fmt.pix.sizeimage < size) 152 return -EINVAL; 153 154 *num_planes = 1; 155 sizes[0] = fmt ? fmt->fmt.pix.sizeimage : size; 156 alloc_ctxs[0] = chan->dev->alloc_ctx; 157 return 0; 158 } 159 160 static int cx25821_buffer_prepare(struct vb2_buffer *vb) 161 { 162 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 163 struct cx25821_dev *dev = chan->dev; 164 struct cx25821_buffer *buf = 165 container_of(vb, struct cx25821_buffer, vb); 166 struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0); 167 u32 line0_offset; 168 int bpl_local = LINE_SIZE_D1; 169 int ret; 170 171 if (chan->pixel_formats == PIXEL_FRMT_411) 172 buf->bpl = (chan->fmt->depth * chan->width) >> 3; 173 else 174 buf->bpl = (chan->fmt->depth >> 3) * chan->width; 175 176 if (vb2_plane_size(vb, 0) < chan->height * buf->bpl) 177 return -EINVAL; 178 vb2_set_plane_payload(vb, 0, chan->height * buf->bpl); 179 buf->vb.v4l2_buf.field = chan->field; 180 181 if (chan->pixel_formats == PIXEL_FRMT_411) { 182 bpl_local = buf->bpl; 183 } else { 184 bpl_local = buf->bpl; /* Default */ 185 186 if (chan->use_cif_resolution) { 187 if (dev->tvnorm & V4L2_STD_625_50) 188 bpl_local = 352 << 1; 189 else 190 bpl_local = chan->cif_width << 1; 191 } 192 } 193 194 switch (chan->field) { 195 case V4L2_FIELD_TOP: 196 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 197 sgt->sgl, 0, UNSET, 198 buf->bpl, 0, chan->height); 199 break; 200 case V4L2_FIELD_BOTTOM: 201 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 202 sgt->sgl, UNSET, 0, 203 buf->bpl, 0, chan->height); 204 break; 205 case V4L2_FIELD_INTERLACED: 206 /* All other formats are top field first */ 207 line0_offset = 0; 208 dprintk(1, "top field first\n"); 209 210 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 211 sgt->sgl, line0_offset, 212 bpl_local, bpl_local, bpl_local, 213 chan->height >> 1); 214 break; 215 case V4L2_FIELD_SEQ_TB: 216 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 217 sgt->sgl, 218 0, buf->bpl * (chan->height >> 1), 219 buf->bpl, 0, chan->height >> 1); 220 break; 221 case V4L2_FIELD_SEQ_BT: 222 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 223 sgt->sgl, 224 buf->bpl * (chan->height >> 1), 0, 225 buf->bpl, 0, chan->height >> 1); 226 break; 227 default: 228 WARN_ON(1); 229 ret = -EINVAL; 230 break; 231 } 232 233 dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n", 234 buf, buf->vb.v4l2_buf.index, chan->width, chan->height, 235 chan->fmt->depth, chan->fmt->name, 236 (unsigned long)buf->risc.dma); 237 238 return ret; 239 } 240 241 static void cx25821_buffer_finish(struct vb2_buffer *vb) 242 { 243 struct cx25821_buffer *buf = 244 container_of(vb, struct cx25821_buffer, vb); 245 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 246 struct cx25821_dev *dev = chan->dev; 247 248 cx25821_free_buffer(dev, buf); 249 } 250 251 static void cx25821_buffer_queue(struct vb2_buffer *vb) 252 { 253 struct cx25821_buffer *buf = 254 container_of(vb, struct cx25821_buffer, vb); 255 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 256 struct cx25821_dev *dev = chan->dev; 257 struct cx25821_buffer *prev; 258 struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq; 259 260 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12); 261 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); 262 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12); 263 buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ 264 265 if (list_empty(&q->active)) { 266 list_add_tail(&buf->queue, &q->active); 267 } else { 268 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); 269 prev = list_entry(q->active.prev, struct cx25821_buffer, 270 queue); 271 list_add_tail(&buf->queue, &q->active); 272 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 273 } 274 } 275 276 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count) 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 struct cx25821_buffer *buf = list_entry(dmaq->active.next, 282 struct cx25821_buffer, queue); 283 284 dmaq->count = 0; 285 cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels); 286 return 0; 287 } 288 289 static void cx25821_stop_streaming(struct vb2_queue *q) 290 { 291 struct cx25821_channel *chan = q->drv_priv; 292 struct cx25821_dev *dev = chan->dev; 293 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq; 294 unsigned long flags; 295 296 cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */ 297 spin_lock_irqsave(&dev->slock, flags); 298 while (!list_empty(&dmaq->active)) { 299 struct cx25821_buffer *buf = list_entry(dmaq->active.next, 300 struct cx25821_buffer, queue); 301 302 list_del(&buf->queue); 303 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 304 } 305 spin_unlock_irqrestore(&dev->slock, flags); 306 } 307 308 static struct vb2_ops cx25821_video_qops = { 309 .queue_setup = cx25821_queue_setup, 310 .buf_prepare = cx25821_buffer_prepare, 311 .buf_finish = cx25821_buffer_finish, 312 .buf_queue = cx25821_buffer_queue, 313 .wait_prepare = vb2_ops_wait_prepare, 314 .wait_finish = vb2_ops_wait_finish, 315 .start_streaming = cx25821_start_streaming, 316 .stop_streaming = cx25821_stop_streaming, 317 }; 318 319 /* VIDEO IOCTLS */ 320 321 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 322 struct v4l2_fmtdesc *f) 323 { 324 if (unlikely(f->index >= ARRAY_SIZE(formats))) 325 return -EINVAL; 326 327 strlcpy(f->description, formats[f->index].name, sizeof(f->description)); 328 f->pixelformat = formats[f->index].fourcc; 329 330 return 0; 331 } 332 333 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv, 334 struct v4l2_format *f) 335 { 336 struct cx25821_channel *chan = video_drvdata(file); 337 338 f->fmt.pix.width = chan->width; 339 f->fmt.pix.height = chan->height; 340 f->fmt.pix.field = chan->field; 341 f->fmt.pix.pixelformat = chan->fmt->fourcc; 342 f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3; 343 f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline; 344 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 345 346 return 0; 347 } 348 349 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv, 350 struct v4l2_format *f) 351 { 352 struct cx25821_channel *chan = video_drvdata(file); 353 struct cx25821_dev *dev = chan->dev; 354 const struct cx25821_fmt *fmt; 355 enum v4l2_field field = f->fmt.pix.field; 356 unsigned int maxh; 357 unsigned w; 358 359 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 360 if (NULL == fmt) 361 return -EINVAL; 362 maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 363 364 w = f->fmt.pix.width; 365 if (field != V4L2_FIELD_BOTTOM) 366 field = V4L2_FIELD_TOP; 367 if (w < 352) { 368 w = 176; 369 f->fmt.pix.height = maxh / 4; 370 } else if (w < 720) { 371 w = 352; 372 f->fmt.pix.height = maxh / 2; 373 } else { 374 w = 720; 375 f->fmt.pix.height = maxh; 376 field = V4L2_FIELD_INTERLACED; 377 } 378 f->fmt.pix.field = field; 379 f->fmt.pix.width = w; 380 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 381 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 382 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 383 384 return 0; 385 } 386 387 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 388 struct v4l2_format *f) 389 { 390 struct cx25821_channel *chan = video_drvdata(file); 391 struct cx25821_dev *dev = chan->dev; 392 int pix_format = PIXEL_FRMT_422; 393 int err; 394 395 err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f); 396 397 if (0 != err) 398 return err; 399 400 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 401 chan->field = f->fmt.pix.field; 402 chan->width = f->fmt.pix.width; 403 chan->height = f->fmt.pix.height; 404 405 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 406 pix_format = PIXEL_FRMT_411; 407 else 408 pix_format = PIXEL_FRMT_422; 409 410 cx25821_set_pixel_format(dev, SRAM_CH00, pix_format); 411 412 /* check if cif resolution */ 413 if (chan->width == 320 || chan->width == 352) 414 chan->use_cif_resolution = 1; 415 else 416 chan->use_cif_resolution = 0; 417 418 chan->cif_width = chan->width; 419 medusa_set_resolution(dev, chan->width, SRAM_CH00); 420 return 0; 421 } 422 423 static int vidioc_log_status(struct file *file, void *priv) 424 { 425 struct cx25821_channel *chan = video_drvdata(file); 426 struct cx25821_dev *dev = chan->dev; 427 const struct sram_channel *sram_ch = chan->sram_channels; 428 u32 tmp = 0; 429 430 tmp = cx_read(sram_ch->dma_ctl); 431 pr_info("Video input 0 is %s\n", 432 (tmp & 0x11) ? "streaming" : "stopped"); 433 return 0; 434 } 435 436 437 static int cx25821_vidioc_querycap(struct file *file, void *priv, 438 struct v4l2_capability *cap) 439 { 440 struct cx25821_channel *chan = video_drvdata(file); 441 struct cx25821_dev *dev = chan->dev; 442 const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE | 443 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; 444 const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE; 445 446 strcpy(cap->driver, "cx25821"); 447 strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card)); 448 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci)); 449 if (chan->id >= VID_CHANNEL_NUM) 450 cap->device_caps = cap_output; 451 else 452 cap->device_caps = cap_input; 453 cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS; 454 return 0; 455 } 456 457 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms) 458 { 459 struct cx25821_channel *chan = video_drvdata(file); 460 461 *tvnorms = chan->dev->tvnorm; 462 return 0; 463 } 464 465 static int cx25821_vidioc_s_std(struct file *file, void *priv, 466 v4l2_std_id tvnorms) 467 { 468 struct cx25821_channel *chan = video_drvdata(file); 469 struct cx25821_dev *dev = chan->dev; 470 471 if (dev->tvnorm == tvnorms) 472 return 0; 473 474 dev->tvnorm = tvnorms; 475 chan->width = 720; 476 chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 477 478 medusa_set_videostandard(dev); 479 480 return 0; 481 } 482 483 static int cx25821_vidioc_enum_input(struct file *file, void *priv, 484 struct v4l2_input *i) 485 { 486 if (i->index) 487 return -EINVAL; 488 489 i->type = V4L2_INPUT_TYPE_CAMERA; 490 i->std = CX25821_NORMS; 491 strcpy(i->name, "Composite"); 492 return 0; 493 } 494 495 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i) 496 { 497 *i = 0; 498 return 0; 499 } 500 501 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i) 502 { 503 return i ? -EINVAL : 0; 504 } 505 506 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl) 507 { 508 struct cx25821_channel *chan = 509 container_of(ctrl->handler, struct cx25821_channel, hdl); 510 struct cx25821_dev *dev = chan->dev; 511 512 switch (ctrl->id) { 513 case V4L2_CID_BRIGHTNESS: 514 medusa_set_brightness(dev, ctrl->val, chan->id); 515 break; 516 case V4L2_CID_HUE: 517 medusa_set_hue(dev, ctrl->val, chan->id); 518 break; 519 case V4L2_CID_CONTRAST: 520 medusa_set_contrast(dev, ctrl->val, chan->id); 521 break; 522 case V4L2_CID_SATURATION: 523 medusa_set_saturation(dev, ctrl->val, chan->id); 524 break; 525 default: 526 return -EINVAL; 527 } 528 return 0; 529 } 530 531 static int cx25821_vidioc_enum_output(struct file *file, void *priv, 532 struct v4l2_output *o) 533 { 534 if (o->index) 535 return -EINVAL; 536 537 o->type = V4L2_INPUT_TYPE_CAMERA; 538 o->std = CX25821_NORMS; 539 strcpy(o->name, "Composite"); 540 return 0; 541 } 542 543 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o) 544 { 545 *o = 0; 546 return 0; 547 } 548 549 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o) 550 { 551 return o ? -EINVAL : 0; 552 } 553 554 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv, 555 struct v4l2_format *f) 556 { 557 struct cx25821_channel *chan = video_drvdata(file); 558 struct cx25821_dev *dev = chan->dev; 559 const struct cx25821_fmt *fmt; 560 561 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 562 if (NULL == fmt) 563 return -EINVAL; 564 f->fmt.pix.width = 720; 565 f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 566 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 567 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 568 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 569 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 570 return 0; 571 } 572 573 static int vidioc_s_fmt_vid_out(struct file *file, void *priv, 574 struct v4l2_format *f) 575 { 576 struct cx25821_channel *chan = video_drvdata(file); 577 int err; 578 579 err = cx25821_vidioc_try_fmt_vid_out(file, priv, f); 580 581 if (0 != err) 582 return err; 583 584 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 585 chan->field = f->fmt.pix.field; 586 chan->width = f->fmt.pix.width; 587 chan->height = f->fmt.pix.height; 588 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 589 chan->pixel_formats = PIXEL_FRMT_411; 590 else 591 chan->pixel_formats = PIXEL_FRMT_422; 592 return 0; 593 } 594 595 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = { 596 .s_ctrl = cx25821_s_ctrl, 597 }; 598 599 static const struct v4l2_file_operations video_fops = { 600 .owner = THIS_MODULE, 601 .open = v4l2_fh_open, 602 .release = vb2_fop_release, 603 .read = vb2_fop_read, 604 .poll = vb2_fop_poll, 605 .unlocked_ioctl = video_ioctl2, 606 .mmap = vb2_fop_mmap, 607 }; 608 609 static const struct v4l2_ioctl_ops video_ioctl_ops = { 610 .vidioc_querycap = cx25821_vidioc_querycap, 611 .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap, 612 .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap, 613 .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap, 614 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 615 .vidioc_reqbufs = vb2_ioctl_reqbufs, 616 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 617 .vidioc_create_bufs = vb2_ioctl_create_bufs, 618 .vidioc_querybuf = vb2_ioctl_querybuf, 619 .vidioc_qbuf = vb2_ioctl_qbuf, 620 .vidioc_dqbuf = vb2_ioctl_dqbuf, 621 .vidioc_streamon = vb2_ioctl_streamon, 622 .vidioc_streamoff = vb2_ioctl_streamoff, 623 .vidioc_g_std = cx25821_vidioc_g_std, 624 .vidioc_s_std = cx25821_vidioc_s_std, 625 .vidioc_enum_input = cx25821_vidioc_enum_input, 626 .vidioc_g_input = cx25821_vidioc_g_input, 627 .vidioc_s_input = cx25821_vidioc_s_input, 628 .vidioc_log_status = vidioc_log_status, 629 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 630 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 631 }; 632 633 static const struct video_device cx25821_video_device = { 634 .name = "cx25821-video", 635 .fops = &video_fops, 636 .release = video_device_release_empty, 637 .minor = -1, 638 .ioctl_ops = &video_ioctl_ops, 639 .tvnorms = CX25821_NORMS, 640 }; 641 642 static const struct v4l2_file_operations video_out_fops = { 643 .owner = THIS_MODULE, 644 .open = v4l2_fh_open, 645 .release = vb2_fop_release, 646 .write = vb2_fop_write, 647 .poll = vb2_fop_poll, 648 .unlocked_ioctl = video_ioctl2, 649 .mmap = vb2_fop_mmap, 650 }; 651 652 static const struct v4l2_ioctl_ops video_out_ioctl_ops = { 653 .vidioc_querycap = cx25821_vidioc_querycap, 654 .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap, 655 .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap, 656 .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out, 657 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, 658 .vidioc_g_std = cx25821_vidioc_g_std, 659 .vidioc_s_std = cx25821_vidioc_s_std, 660 .vidioc_enum_output = cx25821_vidioc_enum_output, 661 .vidioc_g_output = cx25821_vidioc_g_output, 662 .vidioc_s_output = cx25821_vidioc_s_output, 663 .vidioc_log_status = vidioc_log_status, 664 }; 665 666 static const struct video_device cx25821_video_out_device = { 667 .name = "cx25821-video", 668 .fops = &video_out_fops, 669 .release = video_device_release_empty, 670 .minor = -1, 671 .ioctl_ops = &video_out_ioctl_ops, 672 .tvnorms = CX25821_NORMS, 673 }; 674 675 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num) 676 { 677 cx_clear(PCI_INT_MSK, 1); 678 679 if (video_is_registered(&dev->channels[chan_num].vdev)) { 680 video_unregister_device(&dev->channels[chan_num].vdev); 681 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl); 682 } 683 } 684 685 int cx25821_video_register(struct cx25821_dev *dev) 686 { 687 int err; 688 int i; 689 690 /* initial device configuration */ 691 dev->tvnorm = V4L2_STD_NTSC_M; 692 693 spin_lock_init(&dev->slock); 694 695 for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) { 696 struct cx25821_channel *chan = &dev->channels[i]; 697 struct video_device *vdev = &chan->vdev; 698 struct v4l2_ctrl_handler *hdl = &chan->hdl; 699 struct vb2_queue *q; 700 bool is_output = i > SRAM_CH08; 701 702 if (i == SRAM_CH08) /* audio channel */ 703 continue; 704 705 if (!is_output) { 706 v4l2_ctrl_handler_init(hdl, 4); 707 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 708 V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200); 709 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 710 V4L2_CID_CONTRAST, 0, 10000, 1, 5000); 711 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 712 V4L2_CID_SATURATION, 0, 10000, 1, 5000); 713 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 714 V4L2_CID_HUE, 0, 10000, 1, 5000); 715 if (hdl->error) { 716 err = hdl->error; 717 goto fail_unreg; 718 } 719 err = v4l2_ctrl_handler_setup(hdl); 720 if (err) 721 goto fail_unreg; 722 } else { 723 chan->out = &dev->vid_out_data[i - SRAM_CH09]; 724 chan->out->chan = chan; 725 } 726 727 chan->sram_channels = &cx25821_sram_channels[i]; 728 chan->width = 720; 729 chan->field = V4L2_FIELD_INTERLACED; 730 if (dev->tvnorm & V4L2_STD_625_50) 731 chan->height = 576; 732 else 733 chan->height = 480; 734 735 if (chan->pixel_formats == PIXEL_FRMT_411) 736 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P); 737 else 738 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV); 739 740 cx_write(chan->sram_channels->int_stat, 0xffffffff); 741 742 INIT_LIST_HEAD(&chan->dma_vidq.active); 743 744 q = &chan->vidq; 745 746 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT : 747 V4L2_BUF_TYPE_VIDEO_CAPTURE; 748 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 749 q->io_modes |= is_output ? VB2_WRITE : VB2_READ; 750 q->gfp_flags = GFP_DMA32; 751 q->min_buffers_needed = 2; 752 q->drv_priv = chan; 753 q->buf_struct_size = sizeof(struct cx25821_buffer); 754 q->ops = &cx25821_video_qops; 755 q->mem_ops = &vb2_dma_sg_memops; 756 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 757 q->lock = &dev->lock; 758 759 if (!is_output) { 760 err = vb2_queue_init(q); 761 if (err < 0) 762 goto fail_unreg; 763 } 764 765 /* register v4l devices */ 766 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device; 767 vdev->v4l2_dev = &dev->v4l2_dev; 768 if (!is_output) 769 vdev->ctrl_handler = hdl; 770 else 771 vdev->vfl_dir = VFL_DIR_TX; 772 vdev->lock = &dev->lock; 773 vdev->queue = q; 774 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i); 775 video_set_drvdata(vdev, chan); 776 777 err = video_register_device(vdev, VFL_TYPE_GRABBER, 778 video_nr[dev->nr]); 779 780 if (err < 0) 781 goto fail_unreg; 782 } 783 784 /* set PCI interrupt */ 785 cx_set(PCI_INT_MSK, 0xff); 786 787 return 0; 788 789 fail_unreg: 790 while (i >= 0) 791 cx25821_video_unregister(dev, i--); 792 return err; 793 } 794