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 23 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 24 25 #include "cx25821-video.h" 26 27 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards"); 28 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>"); 29 MODULE_LICENSE("GPL"); 30 31 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET }; 32 33 module_param_array(video_nr, int, NULL, 0444); 34 35 MODULE_PARM_DESC(video_nr, "video device numbers"); 36 37 static unsigned int video_debug = VIDEO_DEBUG; 38 module_param(video_debug, int, 0644); 39 MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); 40 41 static unsigned int irq_debug; 42 module_param(irq_debug, int, 0644); 43 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]"); 44 45 #define FORMAT_FLAGS_PACKED 0x01 46 47 static const struct cx25821_fmt formats[] = { 48 { 49 .name = "4:1:1, packed, Y41P", 50 .fourcc = V4L2_PIX_FMT_Y41P, 51 .depth = 12, 52 .flags = FORMAT_FLAGS_PACKED, 53 }, { 54 .name = "4:2:2, packed, YUYV", 55 .fourcc = V4L2_PIX_FMT_YUYV, 56 .depth = 16, 57 .flags = FORMAT_FLAGS_PACKED, 58 }, 59 }; 60 61 static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc) 62 { 63 unsigned int i; 64 65 for (i = 0; i < ARRAY_SIZE(formats); i++) 66 if (formats[i].fourcc == fourcc) 67 return formats + i; 68 return NULL; 69 } 70 71 int cx25821_start_video_dma(struct cx25821_dev *dev, 72 struct cx25821_dmaqueue *q, 73 struct cx25821_buffer *buf, 74 const struct sram_channel *channel) 75 { 76 int tmp = 0; 77 78 /* setup fifo + format */ 79 cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma); 80 81 /* reset counter */ 82 cx_write(channel->gpcnt_ctl, 3); 83 84 /* enable irq */ 85 cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i)); 86 cx_set(channel->int_msk, 0x11); 87 88 /* start dma */ 89 cx_write(channel->dma_ctl, 0x11); /* FIFO and RISC enable */ 90 91 /* make sure upstream setting if any is reversed */ 92 tmp = cx_read(VID_CH_MODE_SEL); 93 cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00); 94 95 return 0; 96 } 97 98 int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status) 99 { 100 int handled = 0; 101 u32 mask; 102 const struct sram_channel *channel = dev->channels[chan_num].sram_channels; 103 104 mask = cx_read(channel->int_msk); 105 if (0 == (status & mask)) 106 return handled; 107 108 cx_write(channel->int_stat, status); 109 110 /* risc op code error */ 111 if (status & (1 << 16)) { 112 pr_warn("%s, %s: video risc op code error\n", 113 dev->name, channel->name); 114 cx_clear(channel->dma_ctl, 0x11); 115 cx25821_sram_channel_dump(dev, channel); 116 } 117 118 /* risc1 y */ 119 if (status & FLD_VID_DST_RISC1) { 120 struct cx25821_dmaqueue *dmaq = 121 &dev->channels[channel->i].dma_vidq; 122 struct cx25821_buffer *buf; 123 124 spin_lock(&dev->slock); 125 if (!list_empty(&dmaq->active)) { 126 buf = list_entry(dmaq->active.next, 127 struct cx25821_buffer, queue); 128 129 buf->vb.vb2_buf.timestamp = ktime_get_ns(); 130 buf->vb.sequence = dmaq->count++; 131 list_del(&buf->queue); 132 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); 133 } 134 spin_unlock(&dev->slock); 135 handled++; 136 } 137 return handled; 138 } 139 140 static int cx25821_queue_setup(struct vb2_queue *q, 141 unsigned int *num_buffers, unsigned int *num_planes, 142 unsigned int sizes[], struct device *alloc_devs[]) 143 { 144 struct cx25821_channel *chan = q->drv_priv; 145 unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3; 146 147 if (*num_planes) 148 return sizes[0] < size ? -EINVAL : 0; 149 150 *num_planes = 1; 151 sizes[0] = size; 152 return 0; 153 } 154 155 static int cx25821_buffer_prepare(struct vb2_buffer *vb) 156 { 157 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 158 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 159 struct cx25821_dev *dev = chan->dev; 160 struct cx25821_buffer *buf = 161 container_of(vbuf, struct cx25821_buffer, vb); 162 struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0); 163 u32 line0_offset; 164 int bpl_local = LINE_SIZE_D1; 165 int ret; 166 167 if (chan->pixel_formats == PIXEL_FRMT_411) 168 buf->bpl = (chan->fmt->depth * chan->width) >> 3; 169 else 170 buf->bpl = (chan->fmt->depth >> 3) * chan->width; 171 172 if (vb2_plane_size(vb, 0) < chan->height * buf->bpl) 173 return -EINVAL; 174 vb2_set_plane_payload(vb, 0, chan->height * buf->bpl); 175 buf->vb.field = chan->field; 176 177 if (chan->pixel_formats == PIXEL_FRMT_411) { 178 bpl_local = buf->bpl; 179 } else { 180 bpl_local = buf->bpl; /* Default */ 181 182 if (chan->use_cif_resolution) { 183 if (dev->tvnorm & V4L2_STD_625_50) 184 bpl_local = 352 << 1; 185 else 186 bpl_local = chan->cif_width << 1; 187 } 188 } 189 190 switch (chan->field) { 191 case V4L2_FIELD_TOP: 192 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 193 sgt->sgl, 0, UNSET, 194 buf->bpl, 0, chan->height); 195 break; 196 case V4L2_FIELD_BOTTOM: 197 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 198 sgt->sgl, UNSET, 0, 199 buf->bpl, 0, chan->height); 200 break; 201 case V4L2_FIELD_INTERLACED: 202 /* All other formats are top field first */ 203 line0_offset = 0; 204 dprintk(1, "top field first\n"); 205 206 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 207 sgt->sgl, line0_offset, 208 bpl_local, bpl_local, bpl_local, 209 chan->height >> 1); 210 break; 211 case V4L2_FIELD_SEQ_TB: 212 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 213 sgt->sgl, 214 0, buf->bpl * (chan->height >> 1), 215 buf->bpl, 0, chan->height >> 1); 216 break; 217 case V4L2_FIELD_SEQ_BT: 218 ret = cx25821_risc_buffer(dev->pci, &buf->risc, 219 sgt->sgl, 220 buf->bpl * (chan->height >> 1), 0, 221 buf->bpl, 0, chan->height >> 1); 222 break; 223 default: 224 WARN_ON(1); 225 ret = -EINVAL; 226 break; 227 } 228 229 dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n", 230 buf, buf->vb.vb2_buf.index, chan->width, chan->height, 231 chan->fmt->depth, chan->fmt->name, 232 (unsigned long)buf->risc.dma); 233 234 return ret; 235 } 236 237 static void cx25821_buffer_finish(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; 244 245 cx25821_free_buffer(dev, buf); 246 } 247 248 static void cx25821_buffer_queue(struct vb2_buffer *vb) 249 { 250 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 251 struct cx25821_buffer *buf = 252 container_of(vbuf, struct cx25821_buffer, vb); 253 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 254 struct cx25821_dev *dev = chan->dev; 255 struct cx25821_buffer *prev; 256 struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq; 257 258 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12); 259 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); 260 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12); 261 buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ 262 263 if (list_empty(&q->active)) { 264 list_add_tail(&buf->queue, &q->active); 265 } else { 266 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); 267 prev = list_entry(q->active.prev, struct cx25821_buffer, 268 queue); 269 list_add_tail(&buf->queue, &q->active); 270 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 271 } 272 } 273 274 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count) 275 { 276 struct cx25821_channel *chan = q->drv_priv; 277 struct cx25821_dev *dev = chan->dev; 278 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq; 279 struct cx25821_buffer *buf = list_entry(dmaq->active.next, 280 struct cx25821_buffer, queue); 281 282 dmaq->count = 0; 283 cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels); 284 return 0; 285 } 286 287 static void cx25821_stop_streaming(struct vb2_queue *q) 288 { 289 struct cx25821_channel *chan = q->drv_priv; 290 struct cx25821_dev *dev = chan->dev; 291 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq; 292 unsigned long flags; 293 294 cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */ 295 spin_lock_irqsave(&dev->slock, flags); 296 while (!list_empty(&dmaq->active)) { 297 struct cx25821_buffer *buf = list_entry(dmaq->active.next, 298 struct cx25821_buffer, queue); 299 300 list_del(&buf->queue); 301 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 302 } 303 spin_unlock_irqrestore(&dev->slock, flags); 304 } 305 306 static const struct vb2_ops cx25821_video_qops = { 307 .queue_setup = cx25821_queue_setup, 308 .buf_prepare = cx25821_buffer_prepare, 309 .buf_finish = cx25821_buffer_finish, 310 .buf_queue = cx25821_buffer_queue, 311 .wait_prepare = vb2_ops_wait_prepare, 312 .wait_finish = vb2_ops_wait_finish, 313 .start_streaming = cx25821_start_streaming, 314 .stop_streaming = cx25821_stop_streaming, 315 }; 316 317 /* VIDEO IOCTLS */ 318 319 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 320 struct v4l2_fmtdesc *f) 321 { 322 if (unlikely(f->index >= ARRAY_SIZE(formats))) 323 return -EINVAL; 324 325 strlcpy(f->description, formats[f->index].name, sizeof(f->description)); 326 f->pixelformat = formats[f->index].fourcc; 327 328 return 0; 329 } 330 331 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv, 332 struct v4l2_format *f) 333 { 334 struct cx25821_channel *chan = video_drvdata(file); 335 336 f->fmt.pix.width = chan->width; 337 f->fmt.pix.height = chan->height; 338 f->fmt.pix.field = chan->field; 339 f->fmt.pix.pixelformat = chan->fmt->fourcc; 340 f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3; 341 f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline; 342 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 343 344 return 0; 345 } 346 347 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv, 348 struct v4l2_format *f) 349 { 350 struct cx25821_channel *chan = video_drvdata(file); 351 struct cx25821_dev *dev = chan->dev; 352 const struct cx25821_fmt *fmt; 353 enum v4l2_field field = f->fmt.pix.field; 354 unsigned int maxh; 355 unsigned w; 356 357 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 358 if (NULL == fmt) 359 return -EINVAL; 360 maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 361 362 w = f->fmt.pix.width; 363 if (field != V4L2_FIELD_BOTTOM) 364 field = V4L2_FIELD_TOP; 365 if (w < 352) { 366 w = 176; 367 f->fmt.pix.height = maxh / 4; 368 } else if (w < 720) { 369 w = 352; 370 f->fmt.pix.height = maxh / 2; 371 } else { 372 w = 720; 373 f->fmt.pix.height = maxh; 374 field = V4L2_FIELD_INTERLACED; 375 } 376 f->fmt.pix.field = field; 377 f->fmt.pix.width = w; 378 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 379 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 380 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 381 382 return 0; 383 } 384 385 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 386 struct v4l2_format *f) 387 { 388 struct cx25821_channel *chan = video_drvdata(file); 389 struct cx25821_dev *dev = chan->dev; 390 int pix_format = PIXEL_FRMT_422; 391 int err; 392 393 err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f); 394 395 if (0 != err) 396 return err; 397 398 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 399 chan->field = f->fmt.pix.field; 400 chan->width = f->fmt.pix.width; 401 chan->height = f->fmt.pix.height; 402 403 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 404 pix_format = PIXEL_FRMT_411; 405 else 406 pix_format = PIXEL_FRMT_422; 407 408 cx25821_set_pixel_format(dev, SRAM_CH00, pix_format); 409 410 /* check if cif resolution */ 411 if (chan->width == 320 || chan->width == 352) 412 chan->use_cif_resolution = 1; 413 else 414 chan->use_cif_resolution = 0; 415 416 chan->cif_width = chan->width; 417 medusa_set_resolution(dev, chan->width, SRAM_CH00); 418 return 0; 419 } 420 421 static int vidioc_log_status(struct file *file, void *priv) 422 { 423 struct cx25821_channel *chan = video_drvdata(file); 424 struct cx25821_dev *dev = chan->dev; 425 const struct sram_channel *sram_ch = chan->sram_channels; 426 u32 tmp = 0; 427 428 tmp = cx_read(sram_ch->dma_ctl); 429 pr_info("Video input 0 is %s\n", 430 (tmp & 0x11) ? "streaming" : "stopped"); 431 return 0; 432 } 433 434 435 static int cx25821_vidioc_querycap(struct file *file, void *priv, 436 struct v4l2_capability *cap) 437 { 438 struct cx25821_channel *chan = video_drvdata(file); 439 struct cx25821_dev *dev = chan->dev; 440 const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE | 441 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; 442 const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE; 443 444 strcpy(cap->driver, "cx25821"); 445 strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card)); 446 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci)); 447 if (chan->id >= VID_CHANNEL_NUM) 448 cap->device_caps = cap_output; 449 else 450 cap->device_caps = cap_input; 451 cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS; 452 return 0; 453 } 454 455 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms) 456 { 457 struct cx25821_channel *chan = video_drvdata(file); 458 459 *tvnorms = chan->dev->tvnorm; 460 return 0; 461 } 462 463 static int cx25821_vidioc_s_std(struct file *file, void *priv, 464 v4l2_std_id tvnorms) 465 { 466 struct cx25821_channel *chan = video_drvdata(file); 467 struct cx25821_dev *dev = chan->dev; 468 469 if (dev->tvnorm == tvnorms) 470 return 0; 471 472 dev->tvnorm = tvnorms; 473 chan->width = 720; 474 chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 475 476 medusa_set_videostandard(dev); 477 478 return 0; 479 } 480 481 static int cx25821_vidioc_enum_input(struct file *file, void *priv, 482 struct v4l2_input *i) 483 { 484 if (i->index) 485 return -EINVAL; 486 487 i->type = V4L2_INPUT_TYPE_CAMERA; 488 i->std = CX25821_NORMS; 489 strcpy(i->name, "Composite"); 490 return 0; 491 } 492 493 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i) 494 { 495 *i = 0; 496 return 0; 497 } 498 499 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i) 500 { 501 return i ? -EINVAL : 0; 502 } 503 504 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl) 505 { 506 struct cx25821_channel *chan = 507 container_of(ctrl->handler, struct cx25821_channel, hdl); 508 struct cx25821_dev *dev = chan->dev; 509 510 switch (ctrl->id) { 511 case V4L2_CID_BRIGHTNESS: 512 medusa_set_brightness(dev, ctrl->val, chan->id); 513 break; 514 case V4L2_CID_HUE: 515 medusa_set_hue(dev, ctrl->val, chan->id); 516 break; 517 case V4L2_CID_CONTRAST: 518 medusa_set_contrast(dev, ctrl->val, chan->id); 519 break; 520 case V4L2_CID_SATURATION: 521 medusa_set_saturation(dev, ctrl->val, chan->id); 522 break; 523 default: 524 return -EINVAL; 525 } 526 return 0; 527 } 528 529 static int cx25821_vidioc_enum_output(struct file *file, void *priv, 530 struct v4l2_output *o) 531 { 532 if (o->index) 533 return -EINVAL; 534 535 o->type = V4L2_INPUT_TYPE_CAMERA; 536 o->std = CX25821_NORMS; 537 strcpy(o->name, "Composite"); 538 return 0; 539 } 540 541 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o) 542 { 543 *o = 0; 544 return 0; 545 } 546 547 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o) 548 { 549 return o ? -EINVAL : 0; 550 } 551 552 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv, 553 struct v4l2_format *f) 554 { 555 struct cx25821_channel *chan = video_drvdata(file); 556 struct cx25821_dev *dev = chan->dev; 557 const struct cx25821_fmt *fmt; 558 559 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 560 if (NULL == fmt) 561 return -EINVAL; 562 f->fmt.pix.width = 720; 563 f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 564 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 565 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 566 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 567 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 568 return 0; 569 } 570 571 static int vidioc_s_fmt_vid_out(struct file *file, void *priv, 572 struct v4l2_format *f) 573 { 574 struct cx25821_channel *chan = video_drvdata(file); 575 int err; 576 577 err = cx25821_vidioc_try_fmt_vid_out(file, priv, f); 578 579 if (0 != err) 580 return err; 581 582 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 583 chan->field = f->fmt.pix.field; 584 chan->width = f->fmt.pix.width; 585 chan->height = f->fmt.pix.height; 586 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 587 chan->pixel_formats = PIXEL_FRMT_411; 588 else 589 chan->pixel_formats = PIXEL_FRMT_422; 590 return 0; 591 } 592 593 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = { 594 .s_ctrl = cx25821_s_ctrl, 595 }; 596 597 static const struct v4l2_file_operations video_fops = { 598 .owner = THIS_MODULE, 599 .open = v4l2_fh_open, 600 .release = vb2_fop_release, 601 .read = vb2_fop_read, 602 .poll = vb2_fop_poll, 603 .unlocked_ioctl = video_ioctl2, 604 .mmap = vb2_fop_mmap, 605 }; 606 607 static const struct v4l2_ioctl_ops video_ioctl_ops = { 608 .vidioc_querycap = cx25821_vidioc_querycap, 609 .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap, 610 .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap, 611 .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap, 612 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 613 .vidioc_reqbufs = vb2_ioctl_reqbufs, 614 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 615 .vidioc_create_bufs = vb2_ioctl_create_bufs, 616 .vidioc_querybuf = vb2_ioctl_querybuf, 617 .vidioc_qbuf = vb2_ioctl_qbuf, 618 .vidioc_dqbuf = vb2_ioctl_dqbuf, 619 .vidioc_streamon = vb2_ioctl_streamon, 620 .vidioc_streamoff = vb2_ioctl_streamoff, 621 .vidioc_g_std = cx25821_vidioc_g_std, 622 .vidioc_s_std = cx25821_vidioc_s_std, 623 .vidioc_enum_input = cx25821_vidioc_enum_input, 624 .vidioc_g_input = cx25821_vidioc_g_input, 625 .vidioc_s_input = cx25821_vidioc_s_input, 626 .vidioc_log_status = vidioc_log_status, 627 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 628 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 629 }; 630 631 static const struct video_device cx25821_video_device = { 632 .name = "cx25821-video", 633 .fops = &video_fops, 634 .release = video_device_release_empty, 635 .minor = -1, 636 .ioctl_ops = &video_ioctl_ops, 637 .tvnorms = CX25821_NORMS, 638 }; 639 640 static const struct v4l2_file_operations video_out_fops = { 641 .owner = THIS_MODULE, 642 .open = v4l2_fh_open, 643 .release = vb2_fop_release, 644 .write = vb2_fop_write, 645 .poll = vb2_fop_poll, 646 .unlocked_ioctl = video_ioctl2, 647 .mmap = vb2_fop_mmap, 648 }; 649 650 static const struct v4l2_ioctl_ops video_out_ioctl_ops = { 651 .vidioc_querycap = cx25821_vidioc_querycap, 652 .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap, 653 .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap, 654 .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out, 655 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, 656 .vidioc_g_std = cx25821_vidioc_g_std, 657 .vidioc_s_std = cx25821_vidioc_s_std, 658 .vidioc_enum_output = cx25821_vidioc_enum_output, 659 .vidioc_g_output = cx25821_vidioc_g_output, 660 .vidioc_s_output = cx25821_vidioc_s_output, 661 .vidioc_log_status = vidioc_log_status, 662 }; 663 664 static const struct video_device cx25821_video_out_device = { 665 .name = "cx25821-video", 666 .fops = &video_out_fops, 667 .release = video_device_release_empty, 668 .minor = -1, 669 .ioctl_ops = &video_out_ioctl_ops, 670 .tvnorms = CX25821_NORMS, 671 }; 672 673 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num) 674 { 675 cx_clear(PCI_INT_MSK, 1); 676 677 if (video_is_registered(&dev->channels[chan_num].vdev)) { 678 video_unregister_device(&dev->channels[chan_num].vdev); 679 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl); 680 } 681 } 682 683 int cx25821_video_register(struct cx25821_dev *dev) 684 { 685 int err; 686 int i; 687 688 /* initial device configuration */ 689 dev->tvnorm = V4L2_STD_NTSC_M; 690 691 spin_lock_init(&dev->slock); 692 693 for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) { 694 struct cx25821_channel *chan = &dev->channels[i]; 695 struct video_device *vdev = &chan->vdev; 696 struct v4l2_ctrl_handler *hdl = &chan->hdl; 697 struct vb2_queue *q; 698 bool is_output = i > SRAM_CH08; 699 700 if (i == SRAM_CH08) /* audio channel */ 701 continue; 702 703 if (!is_output) { 704 v4l2_ctrl_handler_init(hdl, 4); 705 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 706 V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200); 707 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 708 V4L2_CID_CONTRAST, 0, 10000, 1, 5000); 709 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 710 V4L2_CID_SATURATION, 0, 10000, 1, 5000); 711 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 712 V4L2_CID_HUE, 0, 10000, 1, 5000); 713 if (hdl->error) { 714 err = hdl->error; 715 goto fail_unreg; 716 } 717 err = v4l2_ctrl_handler_setup(hdl); 718 if (err) 719 goto fail_unreg; 720 } else { 721 chan->out = &dev->vid_out_data[i - SRAM_CH09]; 722 chan->out->chan = chan; 723 } 724 725 chan->sram_channels = &cx25821_sram_channels[i]; 726 chan->width = 720; 727 chan->field = V4L2_FIELD_INTERLACED; 728 if (dev->tvnorm & V4L2_STD_625_50) 729 chan->height = 576; 730 else 731 chan->height = 480; 732 733 if (chan->pixel_formats == PIXEL_FRMT_411) 734 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P); 735 else 736 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV); 737 738 cx_write(chan->sram_channels->int_stat, 0xffffffff); 739 740 INIT_LIST_HEAD(&chan->dma_vidq.active); 741 742 q = &chan->vidq; 743 744 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT : 745 V4L2_BUF_TYPE_VIDEO_CAPTURE; 746 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 747 q->io_modes |= is_output ? VB2_WRITE : VB2_READ; 748 q->gfp_flags = GFP_DMA32; 749 q->min_buffers_needed = 2; 750 q->drv_priv = chan; 751 q->buf_struct_size = sizeof(struct cx25821_buffer); 752 q->ops = &cx25821_video_qops; 753 q->mem_ops = &vb2_dma_sg_memops; 754 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 755 q->lock = &dev->lock; 756 q->dev = &dev->pci->dev; 757 758 if (!is_output) { 759 err = vb2_queue_init(q); 760 if (err < 0) 761 goto fail_unreg; 762 } 763 764 /* register v4l devices */ 765 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device; 766 vdev->v4l2_dev = &dev->v4l2_dev; 767 if (!is_output) 768 vdev->ctrl_handler = hdl; 769 else 770 vdev->vfl_dir = VFL_DIR_TX; 771 vdev->lock = &dev->lock; 772 vdev->queue = q; 773 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i); 774 video_set_drvdata(vdev, chan); 775 776 err = video_register_device(vdev, VFL_TYPE_GRABBER, 777 video_nr[dev->nr]); 778 779 if (err < 0) 780 goto fail_unreg; 781 } 782 783 /* set PCI interrupt */ 784 cx_set(PCI_INT_MSK, 0xff); 785 786 return 0; 787 788 fail_unreg: 789 while (i >= 0) 790 cx25821_video_unregister(dev, i--); 791 return err; 792 } 793