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 buf->vb.vb2_buf.timestamp = ktime_get_ns(); 134 buf->vb.sequence = dmaq->count++; 135 list_del(&buf->queue); 136 vb2_buffer_done(&buf->vb.vb2_buf, 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, 145 unsigned int *num_buffers, unsigned int *num_planes, 146 unsigned int sizes[], struct device *alloc_devs[]) 147 { 148 struct cx25821_channel *chan = q->drv_priv; 149 unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3; 150 151 if (*num_planes) 152 return sizes[0] < size ? -EINVAL : 0; 153 154 *num_planes = 1; 155 sizes[0] = size; 156 return 0; 157 } 158 159 static int cx25821_buffer_prepare(struct vb2_buffer *vb) 160 { 161 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 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(vbuf, 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.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.vb2_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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 244 struct cx25821_buffer *buf = 245 container_of(vbuf, struct cx25821_buffer, vb); 246 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 247 struct cx25821_dev *dev = chan->dev; 248 249 cx25821_free_buffer(dev, buf); 250 } 251 252 static void cx25821_buffer_queue(struct vb2_buffer *vb) 253 { 254 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 255 struct cx25821_buffer *buf = 256 container_of(vbuf, struct cx25821_buffer, vb); 257 struct cx25821_channel *chan = vb->vb2_queue->drv_priv; 258 struct cx25821_dev *dev = chan->dev; 259 struct cx25821_buffer *prev; 260 struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq; 261 262 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12); 263 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); 264 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12); 265 buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ 266 267 if (list_empty(&q->active)) { 268 list_add_tail(&buf->queue, &q->active); 269 } else { 270 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); 271 prev = list_entry(q->active.prev, struct cx25821_buffer, 272 queue); 273 list_add_tail(&buf->queue, &q->active); 274 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 275 } 276 } 277 278 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count) 279 { 280 struct cx25821_channel *chan = q->drv_priv; 281 struct cx25821_dev *dev = chan->dev; 282 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq; 283 struct cx25821_buffer *buf = list_entry(dmaq->active.next, 284 struct cx25821_buffer, queue); 285 286 dmaq->count = 0; 287 cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels); 288 return 0; 289 } 290 291 static void cx25821_stop_streaming(struct vb2_queue *q) 292 { 293 struct cx25821_channel *chan = q->drv_priv; 294 struct cx25821_dev *dev = chan->dev; 295 struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq; 296 unsigned long flags; 297 298 cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */ 299 spin_lock_irqsave(&dev->slock, flags); 300 while (!list_empty(&dmaq->active)) { 301 struct cx25821_buffer *buf = list_entry(dmaq->active.next, 302 struct cx25821_buffer, queue); 303 304 list_del(&buf->queue); 305 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 306 } 307 spin_unlock_irqrestore(&dev->slock, flags); 308 } 309 310 static struct vb2_ops cx25821_video_qops = { 311 .queue_setup = cx25821_queue_setup, 312 .buf_prepare = cx25821_buffer_prepare, 313 .buf_finish = cx25821_buffer_finish, 314 .buf_queue = cx25821_buffer_queue, 315 .wait_prepare = vb2_ops_wait_prepare, 316 .wait_finish = vb2_ops_wait_finish, 317 .start_streaming = cx25821_start_streaming, 318 .stop_streaming = cx25821_stop_streaming, 319 }; 320 321 /* VIDEO IOCTLS */ 322 323 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 324 struct v4l2_fmtdesc *f) 325 { 326 if (unlikely(f->index >= ARRAY_SIZE(formats))) 327 return -EINVAL; 328 329 strlcpy(f->description, formats[f->index].name, sizeof(f->description)); 330 f->pixelformat = formats[f->index].fourcc; 331 332 return 0; 333 } 334 335 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv, 336 struct v4l2_format *f) 337 { 338 struct cx25821_channel *chan = video_drvdata(file); 339 340 f->fmt.pix.width = chan->width; 341 f->fmt.pix.height = chan->height; 342 f->fmt.pix.field = chan->field; 343 f->fmt.pix.pixelformat = chan->fmt->fourcc; 344 f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3; 345 f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline; 346 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 347 348 return 0; 349 } 350 351 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv, 352 struct v4l2_format *f) 353 { 354 struct cx25821_channel *chan = video_drvdata(file); 355 struct cx25821_dev *dev = chan->dev; 356 const struct cx25821_fmt *fmt; 357 enum v4l2_field field = f->fmt.pix.field; 358 unsigned int maxh; 359 unsigned w; 360 361 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 362 if (NULL == fmt) 363 return -EINVAL; 364 maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 365 366 w = f->fmt.pix.width; 367 if (field != V4L2_FIELD_BOTTOM) 368 field = V4L2_FIELD_TOP; 369 if (w < 352) { 370 w = 176; 371 f->fmt.pix.height = maxh / 4; 372 } else if (w < 720) { 373 w = 352; 374 f->fmt.pix.height = maxh / 2; 375 } else { 376 w = 720; 377 f->fmt.pix.height = maxh; 378 field = V4L2_FIELD_INTERLACED; 379 } 380 f->fmt.pix.field = field; 381 f->fmt.pix.width = w; 382 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 383 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 384 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 385 386 return 0; 387 } 388 389 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 390 struct v4l2_format *f) 391 { 392 struct cx25821_channel *chan = video_drvdata(file); 393 struct cx25821_dev *dev = chan->dev; 394 int pix_format = PIXEL_FRMT_422; 395 int err; 396 397 err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f); 398 399 if (0 != err) 400 return err; 401 402 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 403 chan->field = f->fmt.pix.field; 404 chan->width = f->fmt.pix.width; 405 chan->height = f->fmt.pix.height; 406 407 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 408 pix_format = PIXEL_FRMT_411; 409 else 410 pix_format = PIXEL_FRMT_422; 411 412 cx25821_set_pixel_format(dev, SRAM_CH00, pix_format); 413 414 /* check if cif resolution */ 415 if (chan->width == 320 || chan->width == 352) 416 chan->use_cif_resolution = 1; 417 else 418 chan->use_cif_resolution = 0; 419 420 chan->cif_width = chan->width; 421 medusa_set_resolution(dev, chan->width, SRAM_CH00); 422 return 0; 423 } 424 425 static int vidioc_log_status(struct file *file, void *priv) 426 { 427 struct cx25821_channel *chan = video_drvdata(file); 428 struct cx25821_dev *dev = chan->dev; 429 const struct sram_channel *sram_ch = chan->sram_channels; 430 u32 tmp = 0; 431 432 tmp = cx_read(sram_ch->dma_ctl); 433 pr_info("Video input 0 is %s\n", 434 (tmp & 0x11) ? "streaming" : "stopped"); 435 return 0; 436 } 437 438 439 static int cx25821_vidioc_querycap(struct file *file, void *priv, 440 struct v4l2_capability *cap) 441 { 442 struct cx25821_channel *chan = video_drvdata(file); 443 struct cx25821_dev *dev = chan->dev; 444 const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE | 445 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; 446 const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE; 447 448 strcpy(cap->driver, "cx25821"); 449 strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card)); 450 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci)); 451 if (chan->id >= VID_CHANNEL_NUM) 452 cap->device_caps = cap_output; 453 else 454 cap->device_caps = cap_input; 455 cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS; 456 return 0; 457 } 458 459 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms) 460 { 461 struct cx25821_channel *chan = video_drvdata(file); 462 463 *tvnorms = chan->dev->tvnorm; 464 return 0; 465 } 466 467 static int cx25821_vidioc_s_std(struct file *file, void *priv, 468 v4l2_std_id tvnorms) 469 { 470 struct cx25821_channel *chan = video_drvdata(file); 471 struct cx25821_dev *dev = chan->dev; 472 473 if (dev->tvnorm == tvnorms) 474 return 0; 475 476 dev->tvnorm = tvnorms; 477 chan->width = 720; 478 chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 479 480 medusa_set_videostandard(dev); 481 482 return 0; 483 } 484 485 static int cx25821_vidioc_enum_input(struct file *file, void *priv, 486 struct v4l2_input *i) 487 { 488 if (i->index) 489 return -EINVAL; 490 491 i->type = V4L2_INPUT_TYPE_CAMERA; 492 i->std = CX25821_NORMS; 493 strcpy(i->name, "Composite"); 494 return 0; 495 } 496 497 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i) 498 { 499 *i = 0; 500 return 0; 501 } 502 503 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i) 504 { 505 return i ? -EINVAL : 0; 506 } 507 508 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl) 509 { 510 struct cx25821_channel *chan = 511 container_of(ctrl->handler, struct cx25821_channel, hdl); 512 struct cx25821_dev *dev = chan->dev; 513 514 switch (ctrl->id) { 515 case V4L2_CID_BRIGHTNESS: 516 medusa_set_brightness(dev, ctrl->val, chan->id); 517 break; 518 case V4L2_CID_HUE: 519 medusa_set_hue(dev, ctrl->val, chan->id); 520 break; 521 case V4L2_CID_CONTRAST: 522 medusa_set_contrast(dev, ctrl->val, chan->id); 523 break; 524 case V4L2_CID_SATURATION: 525 medusa_set_saturation(dev, ctrl->val, chan->id); 526 break; 527 default: 528 return -EINVAL; 529 } 530 return 0; 531 } 532 533 static int cx25821_vidioc_enum_output(struct file *file, void *priv, 534 struct v4l2_output *o) 535 { 536 if (o->index) 537 return -EINVAL; 538 539 o->type = V4L2_INPUT_TYPE_CAMERA; 540 o->std = CX25821_NORMS; 541 strcpy(o->name, "Composite"); 542 return 0; 543 } 544 545 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o) 546 { 547 *o = 0; 548 return 0; 549 } 550 551 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o) 552 { 553 return o ? -EINVAL : 0; 554 } 555 556 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv, 557 struct v4l2_format *f) 558 { 559 struct cx25821_channel *chan = video_drvdata(file); 560 struct cx25821_dev *dev = chan->dev; 561 const struct cx25821_fmt *fmt; 562 563 fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 564 if (NULL == fmt) 565 return -EINVAL; 566 f->fmt.pix.width = 720; 567 f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480; 568 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 569 f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; 570 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; 571 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 572 return 0; 573 } 574 575 static int vidioc_s_fmt_vid_out(struct file *file, void *priv, 576 struct v4l2_format *f) 577 { 578 struct cx25821_channel *chan = video_drvdata(file); 579 int err; 580 581 err = cx25821_vidioc_try_fmt_vid_out(file, priv, f); 582 583 if (0 != err) 584 return err; 585 586 chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); 587 chan->field = f->fmt.pix.field; 588 chan->width = f->fmt.pix.width; 589 chan->height = f->fmt.pix.height; 590 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) 591 chan->pixel_formats = PIXEL_FRMT_411; 592 else 593 chan->pixel_formats = PIXEL_FRMT_422; 594 return 0; 595 } 596 597 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = { 598 .s_ctrl = cx25821_s_ctrl, 599 }; 600 601 static const struct v4l2_file_operations video_fops = { 602 .owner = THIS_MODULE, 603 .open = v4l2_fh_open, 604 .release = vb2_fop_release, 605 .read = vb2_fop_read, 606 .poll = vb2_fop_poll, 607 .unlocked_ioctl = video_ioctl2, 608 .mmap = vb2_fop_mmap, 609 }; 610 611 static const struct v4l2_ioctl_ops video_ioctl_ops = { 612 .vidioc_querycap = cx25821_vidioc_querycap, 613 .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap, 614 .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap, 615 .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap, 616 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 617 .vidioc_reqbufs = vb2_ioctl_reqbufs, 618 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 619 .vidioc_create_bufs = vb2_ioctl_create_bufs, 620 .vidioc_querybuf = vb2_ioctl_querybuf, 621 .vidioc_qbuf = vb2_ioctl_qbuf, 622 .vidioc_dqbuf = vb2_ioctl_dqbuf, 623 .vidioc_streamon = vb2_ioctl_streamon, 624 .vidioc_streamoff = vb2_ioctl_streamoff, 625 .vidioc_g_std = cx25821_vidioc_g_std, 626 .vidioc_s_std = cx25821_vidioc_s_std, 627 .vidioc_enum_input = cx25821_vidioc_enum_input, 628 .vidioc_g_input = cx25821_vidioc_g_input, 629 .vidioc_s_input = cx25821_vidioc_s_input, 630 .vidioc_log_status = vidioc_log_status, 631 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 632 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 633 }; 634 635 static const struct video_device cx25821_video_device = { 636 .name = "cx25821-video", 637 .fops = &video_fops, 638 .release = video_device_release_empty, 639 .minor = -1, 640 .ioctl_ops = &video_ioctl_ops, 641 .tvnorms = CX25821_NORMS, 642 }; 643 644 static const struct v4l2_file_operations video_out_fops = { 645 .owner = THIS_MODULE, 646 .open = v4l2_fh_open, 647 .release = vb2_fop_release, 648 .write = vb2_fop_write, 649 .poll = vb2_fop_poll, 650 .unlocked_ioctl = video_ioctl2, 651 .mmap = vb2_fop_mmap, 652 }; 653 654 static const struct v4l2_ioctl_ops video_out_ioctl_ops = { 655 .vidioc_querycap = cx25821_vidioc_querycap, 656 .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap, 657 .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap, 658 .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out, 659 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, 660 .vidioc_g_std = cx25821_vidioc_g_std, 661 .vidioc_s_std = cx25821_vidioc_s_std, 662 .vidioc_enum_output = cx25821_vidioc_enum_output, 663 .vidioc_g_output = cx25821_vidioc_g_output, 664 .vidioc_s_output = cx25821_vidioc_s_output, 665 .vidioc_log_status = vidioc_log_status, 666 }; 667 668 static const struct video_device cx25821_video_out_device = { 669 .name = "cx25821-video", 670 .fops = &video_out_fops, 671 .release = video_device_release_empty, 672 .minor = -1, 673 .ioctl_ops = &video_out_ioctl_ops, 674 .tvnorms = CX25821_NORMS, 675 }; 676 677 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num) 678 { 679 cx_clear(PCI_INT_MSK, 1); 680 681 if (video_is_registered(&dev->channels[chan_num].vdev)) { 682 video_unregister_device(&dev->channels[chan_num].vdev); 683 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl); 684 } 685 } 686 687 int cx25821_video_register(struct cx25821_dev *dev) 688 { 689 int err; 690 int i; 691 692 /* initial device configuration */ 693 dev->tvnorm = V4L2_STD_NTSC_M; 694 695 spin_lock_init(&dev->slock); 696 697 for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) { 698 struct cx25821_channel *chan = &dev->channels[i]; 699 struct video_device *vdev = &chan->vdev; 700 struct v4l2_ctrl_handler *hdl = &chan->hdl; 701 struct vb2_queue *q; 702 bool is_output = i > SRAM_CH08; 703 704 if (i == SRAM_CH08) /* audio channel */ 705 continue; 706 707 if (!is_output) { 708 v4l2_ctrl_handler_init(hdl, 4); 709 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 710 V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200); 711 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 712 V4L2_CID_CONTRAST, 0, 10000, 1, 5000); 713 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 714 V4L2_CID_SATURATION, 0, 10000, 1, 5000); 715 v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops, 716 V4L2_CID_HUE, 0, 10000, 1, 5000); 717 if (hdl->error) { 718 err = hdl->error; 719 goto fail_unreg; 720 } 721 err = v4l2_ctrl_handler_setup(hdl); 722 if (err) 723 goto fail_unreg; 724 } else { 725 chan->out = &dev->vid_out_data[i - SRAM_CH09]; 726 chan->out->chan = chan; 727 } 728 729 chan->sram_channels = &cx25821_sram_channels[i]; 730 chan->width = 720; 731 chan->field = V4L2_FIELD_INTERLACED; 732 if (dev->tvnorm & V4L2_STD_625_50) 733 chan->height = 576; 734 else 735 chan->height = 480; 736 737 if (chan->pixel_formats == PIXEL_FRMT_411) 738 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P); 739 else 740 chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV); 741 742 cx_write(chan->sram_channels->int_stat, 0xffffffff); 743 744 INIT_LIST_HEAD(&chan->dma_vidq.active); 745 746 q = &chan->vidq; 747 748 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT : 749 V4L2_BUF_TYPE_VIDEO_CAPTURE; 750 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 751 q->io_modes |= is_output ? VB2_WRITE : VB2_READ; 752 q->gfp_flags = GFP_DMA32; 753 q->min_buffers_needed = 2; 754 q->drv_priv = chan; 755 q->buf_struct_size = sizeof(struct cx25821_buffer); 756 q->ops = &cx25821_video_qops; 757 q->mem_ops = &vb2_dma_sg_memops; 758 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 759 q->lock = &dev->lock; 760 q->dev = &dev->pci->dev; 761 762 if (!is_output) { 763 err = vb2_queue_init(q); 764 if (err < 0) 765 goto fail_unreg; 766 } 767 768 /* register v4l devices */ 769 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device; 770 vdev->v4l2_dev = &dev->v4l2_dev; 771 if (!is_output) 772 vdev->ctrl_handler = hdl; 773 else 774 vdev->vfl_dir = VFL_DIR_TX; 775 vdev->lock = &dev->lock; 776 vdev->queue = q; 777 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i); 778 video_set_drvdata(vdev, chan); 779 780 err = video_register_device(vdev, VFL_TYPE_GRABBER, 781 video_nr[dev->nr]); 782 783 if (err < 0) 784 goto fail_unreg; 785 } 786 787 /* set PCI interrupt */ 788 cx_set(PCI_INT_MSK, 0xff); 789 790 return 0; 791 792 fail_unreg: 793 while (i >= 0) 794 cx25821_video_unregister(dev, i--); 795 return err; 796 } 797