1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 cx231xx-video.c - driver for Conexant Cx23100/101/102 4 USB video capture devices 5 6 Copyright (C) 2008 <srinivasa.deevi at conexant dot com> 7 Based on em28xx driver 8 Based on cx23885 driver 9 Based on cx88 driver 10 11 */ 12 13 #include "cx231xx.h" 14 #include <linux/init.h> 15 #include <linux/list.h> 16 #include <linux/module.h> 17 #include <linux/kernel.h> 18 #include <linux/bitmap.h> 19 #include <linux/i2c.h> 20 #include <linux/mm.h> 21 #include <linux/mutex.h> 22 #include <linux/slab.h> 23 24 #include <media/v4l2-common.h> 25 #include <media/v4l2-ioctl.h> 26 #include <media/v4l2-event.h> 27 #include <media/drv-intf/msp3400.h> 28 #include <media/tuner.h> 29 30 #include <media/dvb_frontend.h> 31 32 #include "cx231xx-vbi.h" 33 34 #define CX231XX_VERSION "0.0.3" 35 36 #define DRIVER_AUTHOR "Srinivasa Deevi <srinivasa.deevi@conexant.com>" 37 #define DRIVER_DESC "Conexant cx231xx based USB video device driver" 38 39 #define cx231xx_videodbg(fmt, arg...) do {\ 40 if (video_debug) \ 41 printk(KERN_INFO "%s %s :"fmt, \ 42 dev->name, __func__ , ##arg); } while (0) 43 44 static unsigned int isoc_debug; 45 module_param(isoc_debug, int, 0644); 46 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); 47 48 #define cx231xx_isocdbg(fmt, arg...) \ 49 do {\ 50 if (isoc_debug) { \ 51 printk(KERN_INFO "%s %s :"fmt, \ 52 dev->name, __func__ , ##arg); \ 53 } \ 54 } while (0) 55 56 MODULE_AUTHOR(DRIVER_AUTHOR); 57 MODULE_DESCRIPTION(DRIVER_DESC); 58 MODULE_LICENSE("GPL"); 59 MODULE_VERSION(CX231XX_VERSION); 60 61 static unsigned int card[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; 62 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; 63 static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; 64 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; 65 66 module_param_array(card, int, NULL, 0444); 67 module_param_array(video_nr, int, NULL, 0444); 68 module_param_array(vbi_nr, int, NULL, 0444); 69 module_param_array(radio_nr, int, NULL, 0444); 70 71 MODULE_PARM_DESC(card, "card type"); 72 MODULE_PARM_DESC(video_nr, "video device numbers"); 73 MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); 74 MODULE_PARM_DESC(radio_nr, "radio device numbers"); 75 76 static unsigned int video_debug; 77 module_param(video_debug, int, 0644); 78 MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); 79 80 /* supported video standards */ 81 static struct cx231xx_fmt format[] = { 82 { 83 .name = "16bpp YUY2, 4:2:2, packed", 84 .fourcc = V4L2_PIX_FMT_YUYV, 85 .depth = 16, 86 .reg = 0, 87 }, 88 }; 89 90 91 static int cx231xx_enable_analog_tuner(struct cx231xx *dev) 92 { 93 #ifdef CONFIG_MEDIA_CONTROLLER 94 struct media_device *mdev = dev->media_dev; 95 struct media_entity *entity, *decoder = NULL, *source; 96 struct media_link *link, *found_link = NULL; 97 int ret, active_links = 0; 98 99 if (!mdev) 100 return 0; 101 102 /* 103 * This will find the tuner that is connected into the decoder. 104 * Technically, this is not 100% correct, as the device may be 105 * using an analog input instead of the tuner. However, as we can't 106 * do DVB streaming while the DMA engine is being used for V4L2, 107 * this should be enough for the actual needs. 108 */ 109 media_device_for_each_entity(entity, mdev) { 110 if (entity->function == MEDIA_ENT_F_ATV_DECODER) { 111 decoder = entity; 112 break; 113 } 114 } 115 if (!decoder) 116 return 0; 117 118 list_for_each_entry(link, &decoder->links, list) { 119 if (link->sink->entity == decoder) { 120 found_link = link; 121 if (link->flags & MEDIA_LNK_FL_ENABLED) 122 active_links++; 123 break; 124 } 125 } 126 127 if (active_links == 1 || !found_link) 128 return 0; 129 130 source = found_link->source->entity; 131 list_for_each_entry(link, &source->links, list) { 132 struct media_entity *sink; 133 int flags = 0; 134 135 sink = link->sink->entity; 136 137 if (sink == entity) 138 flags = MEDIA_LNK_FL_ENABLED; 139 140 ret = media_entity_setup_link(link, flags); 141 if (ret) { 142 dev_err(dev->dev, 143 "Couldn't change link %s->%s to %s. Error %d\n", 144 source->name, sink->name, 145 flags ? "enabled" : "disabled", 146 ret); 147 return ret; 148 } else 149 dev_dbg(dev->dev, 150 "link %s->%s was %s\n", 151 source->name, sink->name, 152 flags ? "ENABLED" : "disabled"); 153 } 154 #endif 155 return 0; 156 } 157 158 /* ------------------------------------------------------------------ 159 Video buffer and parser functions 160 ------------------------------------------------------------------*/ 161 162 /* 163 * Announces that a buffer were filled and request the next 164 */ 165 static inline void buffer_filled(struct cx231xx *dev, 166 struct cx231xx_dmaqueue *dma_q, 167 struct cx231xx_buffer *buf) 168 { 169 /* Advice that buffer was filled */ 170 cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); 171 buf->vb.state = VIDEOBUF_DONE; 172 buf->vb.field_count++; 173 buf->vb.ts = ktime_get_ns(); 174 175 if (dev->USE_ISO) 176 dev->video_mode.isoc_ctl.buf = NULL; 177 else 178 dev->video_mode.bulk_ctl.buf = NULL; 179 180 list_del(&buf->vb.queue); 181 wake_up(&buf->vb.done); 182 } 183 184 static inline void print_err_status(struct cx231xx *dev, int packet, int status) 185 { 186 char *errmsg = "Unknown"; 187 188 switch (status) { 189 case -ENOENT: 190 errmsg = "unlinked synchronously"; 191 break; 192 case -ECONNRESET: 193 errmsg = "unlinked asynchronously"; 194 break; 195 case -ENOSR: 196 errmsg = "Buffer error (overrun)"; 197 break; 198 case -EPIPE: 199 errmsg = "Stalled (device not responding)"; 200 break; 201 case -EOVERFLOW: 202 errmsg = "Babble (bad cable?)"; 203 break; 204 case -EPROTO: 205 errmsg = "Bit-stuff error (bad cable?)"; 206 break; 207 case -EILSEQ: 208 errmsg = "CRC/Timeout (could be anything)"; 209 break; 210 case -ETIME: 211 errmsg = "Device does not respond"; 212 break; 213 } 214 if (packet < 0) { 215 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg); 216 } else { 217 cx231xx_isocdbg("URB packet %d, status %d [%s].\n", 218 packet, status, errmsg); 219 } 220 } 221 222 /* 223 * video-buf generic routine to get the next available buffer 224 */ 225 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q, 226 struct cx231xx_buffer **buf) 227 { 228 struct cx231xx_video_mode *vmode = 229 container_of(dma_q, struct cx231xx_video_mode, vidq); 230 struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode); 231 232 char *outp; 233 234 if (list_empty(&dma_q->active)) { 235 cx231xx_isocdbg("No active queue to serve\n"); 236 if (dev->USE_ISO) 237 dev->video_mode.isoc_ctl.buf = NULL; 238 else 239 dev->video_mode.bulk_ctl.buf = NULL; 240 *buf = NULL; 241 return; 242 } 243 244 /* Get the next buffer */ 245 *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue); 246 247 /* Cleans up buffer - Useful for testing for frame/URB loss */ 248 outp = videobuf_to_vmalloc(&(*buf)->vb); 249 memset(outp, 0, (*buf)->vb.size); 250 251 if (dev->USE_ISO) 252 dev->video_mode.isoc_ctl.buf = *buf; 253 else 254 dev->video_mode.bulk_ctl.buf = *buf; 255 256 return; 257 } 258 259 /* 260 * Controls the isoc copy of each urb packet 261 */ 262 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb) 263 { 264 struct cx231xx_dmaqueue *dma_q = urb->context; 265 int i; 266 unsigned char *p_buffer; 267 u32 bytes_parsed = 0, buffer_size = 0; 268 u8 sav_eav = 0; 269 270 if (!dev) 271 return 0; 272 273 if (dev->state & DEV_DISCONNECTED) 274 return 0; 275 276 if (urb->status < 0) { 277 print_err_status(dev, -1, urb->status); 278 if (urb->status == -ENOENT) 279 return 0; 280 } 281 282 for (i = 0; i < urb->number_of_packets; i++) { 283 int status = urb->iso_frame_desc[i].status; 284 285 if (status < 0) { 286 print_err_status(dev, i, status); 287 if (urb->iso_frame_desc[i].status != -EPROTO) 288 continue; 289 } 290 291 if (urb->iso_frame_desc[i].actual_length <= 0) { 292 /* cx231xx_isocdbg("packet %d is empty",i); - spammy */ 293 continue; 294 } 295 if (urb->iso_frame_desc[i].actual_length > 296 dev->video_mode.max_pkt_size) { 297 cx231xx_isocdbg("packet bigger than packet size"); 298 continue; 299 } 300 301 /* get buffer pointer and length */ 302 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset; 303 buffer_size = urb->iso_frame_desc[i].actual_length; 304 bytes_parsed = 0; 305 306 if (dma_q->is_partial_line) { 307 /* Handle the case of a partial line */ 308 sav_eav = dma_q->last_sav; 309 } else { 310 /* Check for a SAV/EAV overlapping 311 the buffer boundary */ 312 sav_eav = 313 cx231xx_find_boundary_SAV_EAV(p_buffer, 314 dma_q->partial_buf, 315 &bytes_parsed); 316 } 317 318 sav_eav &= 0xF0; 319 /* Get the first line if we have some portion of an SAV/EAV from 320 the last buffer or a partial line */ 321 if (sav_eav) { 322 bytes_parsed += cx231xx_get_video_line(dev, dma_q, 323 sav_eav, /* SAV/EAV */ 324 p_buffer + bytes_parsed, /* p_buffer */ 325 buffer_size - bytes_parsed);/* buf size */ 326 } 327 328 /* Now parse data that is completely in this buffer */ 329 /* dma_q->is_partial_line = 0; */ 330 331 while (bytes_parsed < buffer_size) { 332 u32 bytes_used = 0; 333 334 sav_eav = cx231xx_find_next_SAV_EAV( 335 p_buffer + bytes_parsed, /* p_buffer */ 336 buffer_size - bytes_parsed, /* buf size */ 337 &bytes_used);/* bytes used to get SAV/EAV */ 338 339 bytes_parsed += bytes_used; 340 341 sav_eav &= 0xF0; 342 if (sav_eav && (bytes_parsed < buffer_size)) { 343 bytes_parsed += cx231xx_get_video_line(dev, 344 dma_q, sav_eav, /* SAV/EAV */ 345 p_buffer + bytes_parsed,/* p_buffer */ 346 buffer_size - bytes_parsed);/*buf size*/ 347 } 348 } 349 350 /* Save the last four bytes of the buffer so we can check the 351 buffer boundary condition next time */ 352 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4); 353 bytes_parsed = 0; 354 355 } 356 return 1; 357 } 358 359 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb) 360 { 361 struct cx231xx_dmaqueue *dma_q = urb->context; 362 unsigned char *p_buffer; 363 u32 bytes_parsed = 0, buffer_size = 0; 364 u8 sav_eav = 0; 365 366 if (!dev) 367 return 0; 368 369 if (dev->state & DEV_DISCONNECTED) 370 return 0; 371 372 if (urb->status < 0) { 373 print_err_status(dev, -1, urb->status); 374 if (urb->status == -ENOENT) 375 return 0; 376 } 377 378 if (1) { 379 380 /* get buffer pointer and length */ 381 p_buffer = urb->transfer_buffer; 382 buffer_size = urb->actual_length; 383 bytes_parsed = 0; 384 385 if (dma_q->is_partial_line) { 386 /* Handle the case of a partial line */ 387 sav_eav = dma_q->last_sav; 388 } else { 389 /* Check for a SAV/EAV overlapping 390 the buffer boundary */ 391 sav_eav = 392 cx231xx_find_boundary_SAV_EAV(p_buffer, 393 dma_q->partial_buf, 394 &bytes_parsed); 395 } 396 397 sav_eav &= 0xF0; 398 /* Get the first line if we have some portion of an SAV/EAV from 399 the last buffer or a partial line */ 400 if (sav_eav) { 401 bytes_parsed += cx231xx_get_video_line(dev, dma_q, 402 sav_eav, /* SAV/EAV */ 403 p_buffer + bytes_parsed, /* p_buffer */ 404 buffer_size - bytes_parsed);/* buf size */ 405 } 406 407 /* Now parse data that is completely in this buffer */ 408 /* dma_q->is_partial_line = 0; */ 409 410 while (bytes_parsed < buffer_size) { 411 u32 bytes_used = 0; 412 413 sav_eav = cx231xx_find_next_SAV_EAV( 414 p_buffer + bytes_parsed, /* p_buffer */ 415 buffer_size - bytes_parsed, /* buf size */ 416 &bytes_used);/* bytes used to get SAV/EAV */ 417 418 bytes_parsed += bytes_used; 419 420 sav_eav &= 0xF0; 421 if (sav_eav && (bytes_parsed < buffer_size)) { 422 bytes_parsed += cx231xx_get_video_line(dev, 423 dma_q, sav_eav, /* SAV/EAV */ 424 p_buffer + bytes_parsed,/* p_buffer */ 425 buffer_size - bytes_parsed);/*buf size*/ 426 } 427 } 428 429 /* Save the last four bytes of the buffer so we can check the 430 buffer boundary condition next time */ 431 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4); 432 bytes_parsed = 0; 433 434 } 435 return 1; 436 } 437 438 439 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf, 440 u32 *p_bytes_used) 441 { 442 u32 bytes_used; 443 u8 boundary_bytes[8]; 444 u8 sav_eav = 0; 445 446 *p_bytes_used = 0; 447 448 /* Create an array of the last 4 bytes of the last buffer and the first 449 4 bytes of the current buffer. */ 450 451 memcpy(boundary_bytes, partial_buf, 4); 452 memcpy(boundary_bytes + 4, p_buffer, 4); 453 454 /* Check for the SAV/EAV in the boundary buffer */ 455 sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8, 456 &bytes_used); 457 458 if (sav_eav) { 459 /* found a boundary SAV/EAV. Updates the bytes used to reflect 460 only those used in the new buffer */ 461 *p_bytes_used = bytes_used - 4; 462 } 463 464 return sav_eav; 465 } 466 467 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used) 468 { 469 u32 i; 470 u8 sav_eav = 0; 471 472 /* 473 * Don't search if the buffer size is less than 4. It causes a page 474 * fault since buffer_size - 4 evaluates to a large number in that 475 * case. 476 */ 477 if (buffer_size < 4) { 478 *p_bytes_used = buffer_size; 479 return 0; 480 } 481 482 for (i = 0; i < (buffer_size - 3); i++) { 483 484 if ((p_buffer[i] == 0xFF) && 485 (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) { 486 487 *p_bytes_used = i + 4; 488 sav_eav = p_buffer[i + 3]; 489 return sav_eav; 490 } 491 } 492 493 *p_bytes_used = buffer_size; 494 return 0; 495 } 496 497 u32 cx231xx_get_video_line(struct cx231xx *dev, 498 struct cx231xx_dmaqueue *dma_q, u8 sav_eav, 499 u8 *p_buffer, u32 buffer_size) 500 { 501 u32 bytes_copied = 0; 502 int current_field = -1; 503 504 switch (sav_eav) { 505 case SAV_ACTIVE_VIDEO_FIELD1: 506 /* looking for skipped line which occurred in PAL 720x480 mode. 507 In this case, there will be no active data contained 508 between the SAV and EAV */ 509 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) && 510 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) && 511 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) || 512 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) || 513 (p_buffer[3] == EAV_VBLANK_FIELD1) || 514 (p_buffer[3] == EAV_VBLANK_FIELD2))) 515 return bytes_copied; 516 current_field = 1; 517 break; 518 519 case SAV_ACTIVE_VIDEO_FIELD2: 520 /* looking for skipped line which occurred in PAL 720x480 mode. 521 In this case, there will be no active data contained between 522 the SAV and EAV */ 523 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) && 524 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) && 525 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) || 526 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) || 527 (p_buffer[3] == EAV_VBLANK_FIELD1) || 528 (p_buffer[3] == EAV_VBLANK_FIELD2))) 529 return bytes_copied; 530 current_field = 2; 531 break; 532 } 533 534 dma_q->last_sav = sav_eav; 535 536 bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer, 537 buffer_size, current_field); 538 539 return bytes_copied; 540 } 541 542 u32 cx231xx_copy_video_line(struct cx231xx *dev, 543 struct cx231xx_dmaqueue *dma_q, u8 *p_line, 544 u32 length, int field_number) 545 { 546 u32 bytes_to_copy; 547 struct cx231xx_buffer *buf; 548 u32 _line_size = dev->width * 2; 549 550 if (dma_q->current_field != field_number) 551 cx231xx_reset_video_buffer(dev, dma_q); 552 553 /* get the buffer pointer */ 554 if (dev->USE_ISO) 555 buf = dev->video_mode.isoc_ctl.buf; 556 else 557 buf = dev->video_mode.bulk_ctl.buf; 558 559 /* Remember the field number for next time */ 560 dma_q->current_field = field_number; 561 562 bytes_to_copy = dma_q->bytes_left_in_line; 563 if (bytes_to_copy > length) 564 bytes_to_copy = length; 565 566 if (dma_q->lines_completed >= dma_q->lines_per_field) { 567 dma_q->bytes_left_in_line -= bytes_to_copy; 568 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ? 569 0 : 1; 570 return 0; 571 } 572 573 dma_q->is_partial_line = 1; 574 575 /* If we don't have a buffer, just return the number of bytes we would 576 have copied if we had a buffer. */ 577 if (!buf) { 578 dma_q->bytes_left_in_line -= bytes_to_copy; 579 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) 580 ? 0 : 1; 581 return bytes_to_copy; 582 } 583 584 /* copy the data to video buffer */ 585 cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy); 586 587 dma_q->pos += bytes_to_copy; 588 dma_q->bytes_left_in_line -= bytes_to_copy; 589 590 if (dma_q->bytes_left_in_line == 0) { 591 dma_q->bytes_left_in_line = _line_size; 592 dma_q->lines_completed++; 593 dma_q->is_partial_line = 0; 594 595 if (cx231xx_is_buffer_done(dev, dma_q) && buf) { 596 buffer_filled(dev, dma_q, buf); 597 598 dma_q->pos = 0; 599 buf = NULL; 600 dma_q->lines_completed = 0; 601 } 602 } 603 604 return bytes_to_copy; 605 } 606 607 void cx231xx_reset_video_buffer(struct cx231xx *dev, 608 struct cx231xx_dmaqueue *dma_q) 609 { 610 struct cx231xx_buffer *buf; 611 612 /* handle the switch from field 1 to field 2 */ 613 if (dma_q->current_field == 1) { 614 if (dma_q->lines_completed >= dma_q->lines_per_field) 615 dma_q->field1_done = 1; 616 else 617 dma_q->field1_done = 0; 618 } 619 620 if (dev->USE_ISO) 621 buf = dev->video_mode.isoc_ctl.buf; 622 else 623 buf = dev->video_mode.bulk_ctl.buf; 624 625 if (buf == NULL) { 626 /* first try to get the buffer */ 627 get_next_buf(dma_q, &buf); 628 629 dma_q->pos = 0; 630 dma_q->field1_done = 0; 631 dma_q->current_field = -1; 632 } 633 634 /* reset the counters */ 635 dma_q->bytes_left_in_line = dev->width << 1; 636 dma_q->lines_completed = 0; 637 } 638 639 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, 640 u8 *p_buffer, u32 bytes_to_copy) 641 { 642 u8 *p_out_buffer = NULL; 643 u32 current_line_bytes_copied = 0; 644 struct cx231xx_buffer *buf; 645 u32 _line_size = dev->width << 1; 646 void *startwrite; 647 int offset, lencopy; 648 649 if (dev->USE_ISO) 650 buf = dev->video_mode.isoc_ctl.buf; 651 else 652 buf = dev->video_mode.bulk_ctl.buf; 653 654 if (buf == NULL) 655 return -1; 656 657 p_out_buffer = videobuf_to_vmalloc(&buf->vb); 658 659 current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line; 660 661 /* Offset field 2 one line from the top of the buffer */ 662 offset = (dma_q->current_field == 1) ? 0 : _line_size; 663 664 /* Offset for field 2 */ 665 startwrite = p_out_buffer + offset; 666 667 /* lines already completed in the current field */ 668 startwrite += (dma_q->lines_completed * _line_size * 2); 669 670 /* bytes already completed in the current line */ 671 startwrite += current_line_bytes_copied; 672 673 lencopy = dma_q->bytes_left_in_line > bytes_to_copy ? 674 bytes_to_copy : dma_q->bytes_left_in_line; 675 676 if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size)) 677 return 0; 678 679 /* The below copies the UYVY data straight into video buffer */ 680 cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy); 681 682 return 0; 683 } 684 685 void cx231xx_swab(u16 *from, u16 *to, u16 len) 686 { 687 u16 i; 688 689 if (len <= 0) 690 return; 691 692 for (i = 0; i < len / 2; i++) 693 to[i] = (from[i] << 8) | (from[i] >> 8); 694 } 695 696 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q) 697 { 698 u8 buffer_complete = 0; 699 700 /* Dual field stream */ 701 buffer_complete = ((dma_q->current_field == 2) && 702 (dma_q->lines_completed >= dma_q->lines_per_field) && 703 dma_q->field1_done); 704 705 return buffer_complete; 706 } 707 708 /* ------------------------------------------------------------------ 709 Videobuf operations 710 ------------------------------------------------------------------*/ 711 712 static int 713 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) 714 { 715 struct cx231xx_fh *fh = vq->priv_data; 716 struct cx231xx *dev = fh->dev; 717 718 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3; 719 if (0 == *count) 720 *count = CX231XX_DEF_BUF; 721 722 if (*count < CX231XX_MIN_BUF) 723 *count = CX231XX_MIN_BUF; 724 725 726 cx231xx_enable_analog_tuner(dev); 727 728 return 0; 729 } 730 731 /* This is called *without* dev->slock held; please keep it that way */ 732 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf) 733 { 734 struct cx231xx_fh *fh = vq->priv_data; 735 struct cx231xx *dev = fh->dev; 736 unsigned long flags = 0; 737 738 BUG_ON(in_interrupt()); 739 740 /* We used to wait for the buffer to finish here, but this didn't work 741 because, as we were keeping the state as VIDEOBUF_QUEUED, 742 videobuf_queue_cancel marked it as finished for us. 743 (Also, it could wedge forever if the hardware was misconfigured.) 744 745 This should be safe; by the time we get here, the buffer isn't 746 queued anymore. If we ever start marking the buffers as 747 VIDEOBUF_ACTIVE, it won't be, though. 748 */ 749 spin_lock_irqsave(&dev->video_mode.slock, flags); 750 if (dev->USE_ISO) { 751 if (dev->video_mode.isoc_ctl.buf == buf) 752 dev->video_mode.isoc_ctl.buf = NULL; 753 } else { 754 if (dev->video_mode.bulk_ctl.buf == buf) 755 dev->video_mode.bulk_ctl.buf = NULL; 756 } 757 spin_unlock_irqrestore(&dev->video_mode.slock, flags); 758 759 videobuf_vmalloc_free(&buf->vb); 760 buf->vb.state = VIDEOBUF_NEEDS_INIT; 761 } 762 763 static int 764 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, 765 enum v4l2_field field) 766 { 767 struct cx231xx_fh *fh = vq->priv_data; 768 struct cx231xx_buffer *buf = 769 container_of(vb, struct cx231xx_buffer, vb); 770 struct cx231xx *dev = fh->dev; 771 int rc = 0, urb_init = 0; 772 773 /* The only currently supported format is 16 bits/pixel */ 774 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth 775 + 7) >> 3; 776 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) 777 return -EINVAL; 778 779 buf->vb.width = dev->width; 780 buf->vb.height = dev->height; 781 buf->vb.field = field; 782 783 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { 784 rc = videobuf_iolock(vq, &buf->vb, NULL); 785 if (rc < 0) 786 goto fail; 787 } 788 789 if (dev->USE_ISO) { 790 if (!dev->video_mode.isoc_ctl.num_bufs) 791 urb_init = 1; 792 } else { 793 if (!dev->video_mode.bulk_ctl.num_bufs) 794 urb_init = 1; 795 } 796 dev_dbg(dev->dev, 797 "urb_init=%d dev->video_mode.max_pkt_size=%d\n", 798 urb_init, dev->video_mode.max_pkt_size); 799 if (urb_init) { 800 dev->mode_tv = 0; 801 if (dev->USE_ISO) 802 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS, 803 CX231XX_NUM_BUFS, 804 dev->video_mode.max_pkt_size, 805 cx231xx_isoc_copy); 806 else 807 rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS, 808 CX231XX_NUM_BUFS, 809 dev->video_mode.max_pkt_size, 810 cx231xx_bulk_copy); 811 if (rc < 0) 812 goto fail; 813 } 814 815 buf->vb.state = VIDEOBUF_PREPARED; 816 817 return 0; 818 819 fail: 820 free_buffer(vq, buf); 821 return rc; 822 } 823 824 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) 825 { 826 struct cx231xx_buffer *buf = 827 container_of(vb, struct cx231xx_buffer, vb); 828 struct cx231xx_fh *fh = vq->priv_data; 829 struct cx231xx *dev = fh->dev; 830 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq; 831 832 buf->vb.state = VIDEOBUF_QUEUED; 833 list_add_tail(&buf->vb.queue, &vidq->active); 834 835 } 836 837 static void buffer_release(struct videobuf_queue *vq, 838 struct videobuf_buffer *vb) 839 { 840 struct cx231xx_buffer *buf = 841 container_of(vb, struct cx231xx_buffer, vb); 842 struct cx231xx_fh *fh = vq->priv_data; 843 struct cx231xx *dev = (struct cx231xx *)fh->dev; 844 845 cx231xx_isocdbg("cx231xx: called buffer_release\n"); 846 847 free_buffer(vq, buf); 848 } 849 850 static const struct videobuf_queue_ops cx231xx_video_qops = { 851 .buf_setup = buffer_setup, 852 .buf_prepare = buffer_prepare, 853 .buf_queue = buffer_queue, 854 .buf_release = buffer_release, 855 }; 856 857 /********************* v4l2 interface **************************************/ 858 859 void video_mux(struct cx231xx *dev, int index) 860 { 861 dev->video_input = index; 862 dev->ctl_ainput = INPUT(index)->amux; 863 864 cx231xx_set_video_input_mux(dev, index); 865 866 cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0); 867 868 cx231xx_set_audio_input(dev, dev->ctl_ainput); 869 870 dev_dbg(dev->dev, "video_mux : %d\n", index); 871 872 /* do mode control overrides if required */ 873 cx231xx_do_mode_ctrl_overrides(dev); 874 } 875 876 /* Usage lock check functions */ 877 static int res_get(struct cx231xx_fh *fh) 878 { 879 struct cx231xx *dev = fh->dev; 880 int rc = 0; 881 882 /* This instance already has stream_on */ 883 if (fh->stream_on) 884 return rc; 885 886 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { 887 if (dev->stream_on) 888 return -EBUSY; 889 dev->stream_on = 1; 890 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { 891 if (dev->vbi_stream_on) 892 return -EBUSY; 893 dev->vbi_stream_on = 1; 894 } else 895 return -EINVAL; 896 897 fh->stream_on = 1; 898 899 return rc; 900 } 901 902 static int res_check(struct cx231xx_fh *fh) 903 { 904 return fh->stream_on; 905 } 906 907 static void res_free(struct cx231xx_fh *fh) 908 { 909 struct cx231xx *dev = fh->dev; 910 911 fh->stream_on = 0; 912 913 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 914 dev->stream_on = 0; 915 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) 916 dev->vbi_stream_on = 0; 917 } 918 919 static int check_dev(struct cx231xx *dev) 920 { 921 if (dev->state & DEV_DISCONNECTED) { 922 dev_err(dev->dev, "v4l2 ioctl: device not present\n"); 923 return -ENODEV; 924 } 925 return 0; 926 } 927 928 /* ------------------------------------------------------------------ 929 IOCTL vidioc handling 930 ------------------------------------------------------------------*/ 931 932 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 933 struct v4l2_format *f) 934 { 935 struct cx231xx_fh *fh = priv; 936 struct cx231xx *dev = fh->dev; 937 938 f->fmt.pix.width = dev->width; 939 f->fmt.pix.height = dev->height; 940 f->fmt.pix.pixelformat = dev->format->fourcc; 941 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; 942 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; 943 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 944 945 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 946 947 return 0; 948 } 949 950 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc) 951 { 952 unsigned int i; 953 954 for (i = 0; i < ARRAY_SIZE(format); i++) 955 if (format[i].fourcc == fourcc) 956 return &format[i]; 957 958 return NULL; 959 } 960 961 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 962 struct v4l2_format *f) 963 { 964 struct cx231xx_fh *fh = priv; 965 struct cx231xx *dev = fh->dev; 966 unsigned int width = f->fmt.pix.width; 967 unsigned int height = f->fmt.pix.height; 968 unsigned int maxw = norm_maxw(dev); 969 unsigned int maxh = norm_maxh(dev); 970 struct cx231xx_fmt *fmt; 971 972 fmt = format_by_fourcc(f->fmt.pix.pixelformat); 973 if (!fmt) { 974 cx231xx_videodbg("Fourcc format (%08x) invalid.\n", 975 f->fmt.pix.pixelformat); 976 return -EINVAL; 977 } 978 979 /* width must even because of the YUYV format 980 height must be even because of interlacing */ 981 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0); 982 983 f->fmt.pix.width = width; 984 f->fmt.pix.height = height; 985 f->fmt.pix.pixelformat = fmt->fourcc; 986 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3; 987 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; 988 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 989 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 990 991 return 0; 992 } 993 994 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 995 struct v4l2_format *f) 996 { 997 struct cx231xx_fh *fh = priv; 998 struct cx231xx *dev = fh->dev; 999 int rc; 1000 struct cx231xx_fmt *fmt; 1001 struct v4l2_subdev_format format = { 1002 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 1003 }; 1004 1005 rc = check_dev(dev); 1006 if (rc < 0) 1007 return rc; 1008 1009 vidioc_try_fmt_vid_cap(file, priv, f); 1010 1011 fmt = format_by_fourcc(f->fmt.pix.pixelformat); 1012 if (!fmt) 1013 return -EINVAL; 1014 1015 if (videobuf_queue_is_busy(&fh->vb_vidq)) { 1016 dev_err(dev->dev, "%s: queue busy\n", __func__); 1017 return -EBUSY; 1018 } 1019 1020 if (dev->stream_on && !fh->stream_on) { 1021 dev_err(dev->dev, 1022 "%s: device in use by another fh\n", __func__); 1023 return -EBUSY; 1024 } 1025 1026 /* set new image size */ 1027 dev->width = f->fmt.pix.width; 1028 dev->height = f->fmt.pix.height; 1029 dev->format = fmt; 1030 1031 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED); 1032 call_all(dev, pad, set_fmt, NULL, &format); 1033 v4l2_fill_pix_format(&f->fmt.pix, &format.format); 1034 1035 return rc; 1036 } 1037 1038 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) 1039 { 1040 struct cx231xx_fh *fh = priv; 1041 struct cx231xx *dev = fh->dev; 1042 1043 *id = dev->norm; 1044 return 0; 1045 } 1046 1047 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) 1048 { 1049 struct cx231xx_fh *fh = priv; 1050 struct cx231xx *dev = fh->dev; 1051 struct v4l2_subdev_format format = { 1052 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 1053 }; 1054 int rc; 1055 1056 rc = check_dev(dev); 1057 if (rc < 0) 1058 return rc; 1059 1060 if (dev->norm == norm) 1061 return 0; 1062 1063 if (videobuf_queue_is_busy(&fh->vb_vidq)) 1064 return -EBUSY; 1065 1066 dev->norm = norm; 1067 1068 /* Adjusts width/height, if needed */ 1069 dev->width = 720; 1070 dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480; 1071 1072 call_all(dev, video, s_std, dev->norm); 1073 1074 /* We need to reset basic properties in the decoder related to 1075 resolution (since a standard change effects things like the number 1076 of lines in VACT, etc) */ 1077 format.format.code = MEDIA_BUS_FMT_FIXED; 1078 format.format.width = dev->width; 1079 format.format.height = dev->height; 1080 call_all(dev, pad, set_fmt, NULL, &format); 1081 1082 /* do mode control overrides */ 1083 cx231xx_do_mode_ctrl_overrides(dev); 1084 1085 return 0; 1086 } 1087 1088 static const char *iname[] = { 1089 [CX231XX_VMUX_COMPOSITE1] = "Composite1", 1090 [CX231XX_VMUX_SVIDEO] = "S-Video", 1091 [CX231XX_VMUX_TELEVISION] = "Television", 1092 [CX231XX_VMUX_CABLE] = "Cable TV", 1093 [CX231XX_VMUX_DVB] = "DVB", 1094 }; 1095 1096 void cx231xx_v4l2_create_entities(struct cx231xx *dev) 1097 { 1098 #if defined(CONFIG_MEDIA_CONTROLLER) 1099 int ret, i; 1100 1101 /* Create entities for each input connector */ 1102 for (i = 0; i < MAX_CX231XX_INPUT; i++) { 1103 struct media_entity *ent = &dev->input_ent[i]; 1104 1105 if (!INPUT(i)->type) 1106 break; 1107 1108 ent->name = iname[INPUT(i)->type]; 1109 ent->flags = MEDIA_ENT_FL_CONNECTOR; 1110 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE; 1111 1112 switch (INPUT(i)->type) { 1113 case CX231XX_VMUX_COMPOSITE1: 1114 ent->function = MEDIA_ENT_F_CONN_COMPOSITE; 1115 break; 1116 case CX231XX_VMUX_SVIDEO: 1117 ent->function = MEDIA_ENT_F_CONN_SVIDEO; 1118 break; 1119 case CX231XX_VMUX_TELEVISION: 1120 case CX231XX_VMUX_CABLE: 1121 case CX231XX_VMUX_DVB: 1122 /* The DVB core will handle it */ 1123 if (dev->tuner_type == TUNER_ABSENT) 1124 continue; 1125 /* fall through */ 1126 default: /* just to shut up a gcc warning */ 1127 ent->function = MEDIA_ENT_F_CONN_RF; 1128 break; 1129 } 1130 1131 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]); 1132 if (ret < 0) 1133 pr_err("failed to initialize input pad[%d]!\n", i); 1134 1135 ret = media_device_register_entity(dev->media_dev, ent); 1136 if (ret < 0) 1137 pr_err("failed to register input entity %d!\n", i); 1138 } 1139 #endif 1140 } 1141 1142 int cx231xx_enum_input(struct file *file, void *priv, 1143 struct v4l2_input *i) 1144 { 1145 struct cx231xx_fh *fh = priv; 1146 struct cx231xx *dev = fh->dev; 1147 u32 gen_stat; 1148 unsigned int n; 1149 int ret; 1150 1151 n = i->index; 1152 if (n >= MAX_CX231XX_INPUT) 1153 return -EINVAL; 1154 if (0 == INPUT(n)->type) 1155 return -EINVAL; 1156 1157 i->index = n; 1158 i->type = V4L2_INPUT_TYPE_CAMERA; 1159 1160 strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name)); 1161 1162 if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) || 1163 (CX231XX_VMUX_CABLE == INPUT(n)->type)) 1164 i->type = V4L2_INPUT_TYPE_TUNER; 1165 1166 i->std = dev->vdev.tvnorms; 1167 1168 /* If they are asking about the active input, read signal status */ 1169 if (n == dev->video_input) { 1170 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1171 GEN_STAT, 2, &gen_stat, 4); 1172 if (ret > 0) { 1173 if ((gen_stat & FLD_VPRES) == 0x00) 1174 i->status |= V4L2_IN_ST_NO_SIGNAL; 1175 if ((gen_stat & FLD_HLOCK) == 0x00) 1176 i->status |= V4L2_IN_ST_NO_H_LOCK; 1177 } 1178 } 1179 1180 return 0; 1181 } 1182 1183 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i) 1184 { 1185 struct cx231xx_fh *fh = priv; 1186 struct cx231xx *dev = fh->dev; 1187 1188 *i = dev->video_input; 1189 1190 return 0; 1191 } 1192 1193 int cx231xx_s_input(struct file *file, void *priv, unsigned int i) 1194 { 1195 struct cx231xx_fh *fh = priv; 1196 struct cx231xx *dev = fh->dev; 1197 int rc; 1198 1199 dev->mode_tv = 0; 1200 rc = check_dev(dev); 1201 if (rc < 0) 1202 return rc; 1203 1204 if (i >= MAX_CX231XX_INPUT) 1205 return -EINVAL; 1206 if (0 == INPUT(i)->type) 1207 return -EINVAL; 1208 1209 video_mux(dev, i); 1210 1211 if (INPUT(i)->type == CX231XX_VMUX_TELEVISION || 1212 INPUT(i)->type == CX231XX_VMUX_CABLE) { 1213 /* There's a tuner, so reset the standard and put it on the 1214 last known frequency (since it was probably powered down 1215 until now */ 1216 call_all(dev, video, s_std, dev->norm); 1217 } 1218 1219 return 0; 1220 } 1221 1222 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) 1223 { 1224 struct cx231xx_fh *fh = priv; 1225 struct cx231xx *dev = fh->dev; 1226 int rc; 1227 1228 rc = check_dev(dev); 1229 if (rc < 0) 1230 return rc; 1231 1232 if (0 != t->index) 1233 return -EINVAL; 1234 1235 strscpy(t->name, "Tuner", sizeof(t->name)); 1236 1237 t->type = V4L2_TUNER_ANALOG_TV; 1238 t->capability = V4L2_TUNER_CAP_NORM; 1239 t->rangehigh = 0xffffffffUL; 1240 t->signal = 0xffff; /* LOCKED */ 1241 call_all(dev, tuner, g_tuner, t); 1242 1243 return 0; 1244 } 1245 1246 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) 1247 { 1248 struct cx231xx_fh *fh = priv; 1249 struct cx231xx *dev = fh->dev; 1250 int rc; 1251 1252 rc = check_dev(dev); 1253 if (rc < 0) 1254 return rc; 1255 1256 if (0 != t->index) 1257 return -EINVAL; 1258 #if 0 1259 call_all(dev, tuner, s_tuner, t); 1260 #endif 1261 return 0; 1262 } 1263 1264 int cx231xx_g_frequency(struct file *file, void *priv, 1265 struct v4l2_frequency *f) 1266 { 1267 struct cx231xx_fh *fh = priv; 1268 struct cx231xx *dev = fh->dev; 1269 1270 if (f->tuner) 1271 return -EINVAL; 1272 1273 f->frequency = dev->ctl_freq; 1274 1275 return 0; 1276 } 1277 1278 int cx231xx_s_frequency(struct file *file, void *priv, 1279 const struct v4l2_frequency *f) 1280 { 1281 struct cx231xx_fh *fh = priv; 1282 struct cx231xx *dev = fh->dev; 1283 struct v4l2_frequency new_freq = *f; 1284 int rc; 1285 u32 if_frequency = 5400000; 1286 1287 dev_dbg(dev->dev, 1288 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n", 1289 f->frequency, f->type); 1290 1291 rc = check_dev(dev); 1292 if (rc < 0) 1293 return rc; 1294 1295 if (0 != f->tuner) 1296 return -EINVAL; 1297 1298 /* set pre channel change settings in DIF first */ 1299 rc = cx231xx_tuner_pre_channel_change(dev); 1300 1301 call_all(dev, tuner, s_frequency, f); 1302 call_all(dev, tuner, g_frequency, &new_freq); 1303 dev->ctl_freq = new_freq.frequency; 1304 1305 /* set post channel change settings in DIF first */ 1306 rc = cx231xx_tuner_post_channel_change(dev); 1307 1308 if (dev->tuner_type == TUNER_NXP_TDA18271) { 1309 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443)) 1310 if_frequency = 5400000; /*5.4MHz */ 1311 else if (dev->norm & V4L2_STD_B) 1312 if_frequency = 6000000; /*6.0MHz */ 1313 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK)) 1314 if_frequency = 6900000; /*6.9MHz */ 1315 else if (dev->norm & V4L2_STD_GH) 1316 if_frequency = 7100000; /*7.1MHz */ 1317 else if (dev->norm & V4L2_STD_PAL_I) 1318 if_frequency = 7250000; /*7.25MHz */ 1319 else if (dev->norm & V4L2_STD_SECAM_L) 1320 if_frequency = 6900000; /*6.9MHz */ 1321 else if (dev->norm & V4L2_STD_SECAM_LC) 1322 if_frequency = 1250000; /*1.25MHz */ 1323 1324 dev_dbg(dev->dev, 1325 "if_frequency is set to %d\n", if_frequency); 1326 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1); 1327 1328 update_HH_register_after_set_DIF(dev); 1329 } 1330 1331 dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency); 1332 1333 return rc; 1334 } 1335 1336 #ifdef CONFIG_VIDEO_ADV_DEBUG 1337 1338 int cx231xx_g_chip_info(struct file *file, void *fh, 1339 struct v4l2_dbg_chip_info *chip) 1340 { 1341 switch (chip->match.addr) { 1342 case 0: /* Cx231xx - internal registers */ 1343 return 0; 1344 case 1: /* AFE - read byte */ 1345 strscpy(chip->name, "AFE (byte)", sizeof(chip->name)); 1346 return 0; 1347 case 2: /* Video Block - read byte */ 1348 strscpy(chip->name, "Video (byte)", sizeof(chip->name)); 1349 return 0; 1350 case 3: /* I2S block - read byte */ 1351 strscpy(chip->name, "I2S (byte)", sizeof(chip->name)); 1352 return 0; 1353 case 4: /* AFE - read dword */ 1354 strscpy(chip->name, "AFE (dword)", sizeof(chip->name)); 1355 return 0; 1356 case 5: /* Video Block - read dword */ 1357 strscpy(chip->name, "Video (dword)", sizeof(chip->name)); 1358 return 0; 1359 case 6: /* I2S Block - read dword */ 1360 strscpy(chip->name, "I2S (dword)", sizeof(chip->name)); 1361 return 0; 1362 } 1363 return -EINVAL; 1364 } 1365 1366 int cx231xx_g_register(struct file *file, void *priv, 1367 struct v4l2_dbg_register *reg) 1368 { 1369 struct cx231xx_fh *fh = priv; 1370 struct cx231xx *dev = fh->dev; 1371 int ret; 1372 u8 value[4] = { 0, 0, 0, 0 }; 1373 u32 data = 0; 1374 1375 switch (reg->match.addr) { 1376 case 0: /* Cx231xx - internal registers */ 1377 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, 1378 (u16)reg->reg, value, 4); 1379 reg->val = value[0] | value[1] << 8 | 1380 value[2] << 16 | (u32)value[3] << 24; 1381 reg->size = 4; 1382 break; 1383 case 1: /* AFE - read byte */ 1384 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, 1385 (u16)reg->reg, 2, &data, 1); 1386 reg->val = data; 1387 reg->size = 1; 1388 break; 1389 case 2: /* Video Block - read byte */ 1390 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1391 (u16)reg->reg, 2, &data, 1); 1392 reg->val = data; 1393 reg->size = 1; 1394 break; 1395 case 3: /* I2S block - read byte */ 1396 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1397 (u16)reg->reg, 1, &data, 1); 1398 reg->val = data; 1399 reg->size = 1; 1400 break; 1401 case 4: /* AFE - read dword */ 1402 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, 1403 (u16)reg->reg, 2, &data, 4); 1404 reg->val = data; 1405 reg->size = 4; 1406 break; 1407 case 5: /* Video Block - read dword */ 1408 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1409 (u16)reg->reg, 2, &data, 4); 1410 reg->val = data; 1411 reg->size = 4; 1412 break; 1413 case 6: /* I2S Block - read dword */ 1414 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1415 (u16)reg->reg, 1, &data, 4); 1416 reg->val = data; 1417 reg->size = 4; 1418 break; 1419 default: 1420 return -EINVAL; 1421 } 1422 return ret < 0 ? ret : 0; 1423 } 1424 1425 int cx231xx_s_register(struct file *file, void *priv, 1426 const struct v4l2_dbg_register *reg) 1427 { 1428 struct cx231xx_fh *fh = priv; 1429 struct cx231xx *dev = fh->dev; 1430 int ret; 1431 u8 data[4] = { 0, 0, 0, 0 }; 1432 1433 switch (reg->match.addr) { 1434 case 0: /* cx231xx internal registers */ 1435 data[0] = (u8) reg->val; 1436 data[1] = (u8) (reg->val >> 8); 1437 data[2] = (u8) (reg->val >> 16); 1438 data[3] = (u8) (reg->val >> 24); 1439 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, 1440 (u16)reg->reg, data, 4); 1441 break; 1442 case 1: /* AFE - write byte */ 1443 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, 1444 (u16)reg->reg, 2, reg->val, 1); 1445 break; 1446 case 2: /* Video Block - write byte */ 1447 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1448 (u16)reg->reg, 2, reg->val, 1); 1449 break; 1450 case 3: /* I2S block - write byte */ 1451 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1452 (u16)reg->reg, 1, reg->val, 1); 1453 break; 1454 case 4: /* AFE - write dword */ 1455 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, 1456 (u16)reg->reg, 2, reg->val, 4); 1457 break; 1458 case 5: /* Video Block - write dword */ 1459 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1460 (u16)reg->reg, 2, reg->val, 4); 1461 break; 1462 case 6: /* I2S block - write dword */ 1463 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1464 (u16)reg->reg, 1, reg->val, 4); 1465 break; 1466 default: 1467 return -EINVAL; 1468 } 1469 return ret < 0 ? ret : 0; 1470 } 1471 #endif 1472 1473 static int vidioc_g_pixelaspect(struct file *file, void *priv, 1474 int type, struct v4l2_fract *f) 1475 { 1476 struct cx231xx_fh *fh = priv; 1477 struct cx231xx *dev = fh->dev; 1478 bool is_50hz = dev->norm & V4L2_STD_625_50; 1479 1480 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 1481 return -EINVAL; 1482 1483 f->numerator = is_50hz ? 54 : 11; 1484 f->denominator = is_50hz ? 59 : 10; 1485 1486 return 0; 1487 } 1488 1489 static int vidioc_g_selection(struct file *file, void *priv, 1490 struct v4l2_selection *s) 1491 { 1492 struct cx231xx_fh *fh = priv; 1493 struct cx231xx *dev = fh->dev; 1494 1495 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 1496 return -EINVAL; 1497 1498 switch (s->target) { 1499 case V4L2_SEL_TGT_CROP_BOUNDS: 1500 case V4L2_SEL_TGT_CROP_DEFAULT: 1501 s->r.left = 0; 1502 s->r.top = 0; 1503 s->r.width = dev->width; 1504 s->r.height = dev->height; 1505 break; 1506 default: 1507 return -EINVAL; 1508 } 1509 return 0; 1510 } 1511 1512 static int vidioc_streamon(struct file *file, void *priv, 1513 enum v4l2_buf_type type) 1514 { 1515 struct cx231xx_fh *fh = priv; 1516 struct cx231xx *dev = fh->dev; 1517 int rc; 1518 1519 rc = check_dev(dev); 1520 if (rc < 0) 1521 return rc; 1522 1523 rc = res_get(fh); 1524 1525 if (likely(rc >= 0)) 1526 rc = videobuf_streamon(&fh->vb_vidq); 1527 1528 call_all(dev, video, s_stream, 1); 1529 1530 return rc; 1531 } 1532 1533 static int vidioc_streamoff(struct file *file, void *priv, 1534 enum v4l2_buf_type type) 1535 { 1536 struct cx231xx_fh *fh = priv; 1537 struct cx231xx *dev = fh->dev; 1538 int rc; 1539 1540 rc = check_dev(dev); 1541 if (rc < 0) 1542 return rc; 1543 1544 if (type != fh->type) 1545 return -EINVAL; 1546 1547 cx25840_call(dev, video, s_stream, 0); 1548 1549 videobuf_streamoff(&fh->vb_vidq); 1550 res_free(fh); 1551 1552 return 0; 1553 } 1554 1555 int cx231xx_querycap(struct file *file, void *priv, 1556 struct v4l2_capability *cap) 1557 { 1558 struct video_device *vdev = video_devdata(file); 1559 struct cx231xx_fh *fh = priv; 1560 struct cx231xx *dev = fh->dev; 1561 1562 strscpy(cap->driver, "cx231xx", sizeof(cap->driver)); 1563 strscpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card)); 1564 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 1565 1566 if (vdev->vfl_type == VFL_TYPE_RADIO) 1567 cap->device_caps = V4L2_CAP_RADIO; 1568 else { 1569 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; 1570 if (vdev->vfl_type == VFL_TYPE_VBI) 1571 cap->device_caps |= V4L2_CAP_VBI_CAPTURE; 1572 else 1573 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE; 1574 } 1575 if (dev->tuner_type != TUNER_ABSENT) 1576 cap->device_caps |= V4L2_CAP_TUNER; 1577 cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE | 1578 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE | 1579 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS; 1580 if (video_is_registered(&dev->radio_dev)) 1581 cap->capabilities |= V4L2_CAP_RADIO; 1582 1583 return 0; 1584 } 1585 1586 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 1587 struct v4l2_fmtdesc *f) 1588 { 1589 if (unlikely(f->index >= ARRAY_SIZE(format))) 1590 return -EINVAL; 1591 1592 strscpy(f->description, format[f->index].name, sizeof(f->description)); 1593 f->pixelformat = format[f->index].fourcc; 1594 1595 return 0; 1596 } 1597 1598 /* RAW VBI ioctls */ 1599 1600 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, 1601 struct v4l2_format *f) 1602 { 1603 struct cx231xx_fh *fh = priv; 1604 struct cx231xx *dev = fh->dev; 1605 1606 f->fmt.vbi.sampling_rate = 6750000 * 4; 1607 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; 1608 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; 1609 f->fmt.vbi.offset = 0; 1610 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? 1611 PAL_VBI_START_LINE : NTSC_VBI_START_LINE; 1612 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? 1613 PAL_VBI_LINES : NTSC_VBI_LINES; 1614 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? 1615 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; 1616 f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; 1617 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); 1618 1619 return 0; 1620 1621 } 1622 1623 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv, 1624 struct v4l2_format *f) 1625 { 1626 struct cx231xx_fh *fh = priv; 1627 struct cx231xx *dev = fh->dev; 1628 1629 f->fmt.vbi.sampling_rate = 6750000 * 4; 1630 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; 1631 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; 1632 f->fmt.vbi.offset = 0; 1633 f->fmt.vbi.flags = 0; 1634 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? 1635 PAL_VBI_START_LINE : NTSC_VBI_START_LINE; 1636 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? 1637 PAL_VBI_LINES : NTSC_VBI_LINES; 1638 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? 1639 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; 1640 f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; 1641 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); 1642 1643 return 0; 1644 1645 } 1646 1647 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, 1648 struct v4l2_format *f) 1649 { 1650 struct cx231xx_fh *fh = priv; 1651 struct cx231xx *dev = fh->dev; 1652 1653 if (dev->vbi_stream_on && !fh->stream_on) { 1654 dev_err(dev->dev, 1655 "%s device in use by another fh\n", __func__); 1656 return -EBUSY; 1657 } 1658 return vidioc_try_fmt_vbi_cap(file, priv, f); 1659 } 1660 1661 static int vidioc_reqbufs(struct file *file, void *priv, 1662 struct v4l2_requestbuffers *rb) 1663 { 1664 struct cx231xx_fh *fh = priv; 1665 struct cx231xx *dev = fh->dev; 1666 int rc; 1667 1668 rc = check_dev(dev); 1669 if (rc < 0) 1670 return rc; 1671 1672 return videobuf_reqbufs(&fh->vb_vidq, rb); 1673 } 1674 1675 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b) 1676 { 1677 struct cx231xx_fh *fh = priv; 1678 struct cx231xx *dev = fh->dev; 1679 int rc; 1680 1681 rc = check_dev(dev); 1682 if (rc < 0) 1683 return rc; 1684 1685 return videobuf_querybuf(&fh->vb_vidq, b); 1686 } 1687 1688 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) 1689 { 1690 struct cx231xx_fh *fh = priv; 1691 struct cx231xx *dev = fh->dev; 1692 int rc; 1693 1694 rc = check_dev(dev); 1695 if (rc < 0) 1696 return rc; 1697 1698 return videobuf_qbuf(&fh->vb_vidq, b); 1699 } 1700 1701 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) 1702 { 1703 struct cx231xx_fh *fh = priv; 1704 struct cx231xx *dev = fh->dev; 1705 int rc; 1706 1707 rc = check_dev(dev); 1708 if (rc < 0) 1709 return rc; 1710 1711 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK); 1712 } 1713 1714 /* ----------------------------------------------------------- */ 1715 /* RADIO ESPECIFIC IOCTLS */ 1716 /* ----------------------------------------------------------- */ 1717 1718 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) 1719 { 1720 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; 1721 1722 if (t->index) 1723 return -EINVAL; 1724 1725 strscpy(t->name, "Radio", sizeof(t->name)); 1726 1727 call_all(dev, tuner, g_tuner, t); 1728 1729 return 0; 1730 } 1731 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) 1732 { 1733 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; 1734 1735 if (t->index) 1736 return -EINVAL; 1737 1738 call_all(dev, tuner, s_tuner, t); 1739 1740 return 0; 1741 } 1742 1743 /* 1744 * cx231xx_v4l2_open() 1745 * inits the device and starts isoc transfer 1746 */ 1747 static int cx231xx_v4l2_open(struct file *filp) 1748 { 1749 int radio = 0; 1750 struct video_device *vdev = video_devdata(filp); 1751 struct cx231xx *dev = video_drvdata(filp); 1752 struct cx231xx_fh *fh; 1753 enum v4l2_buf_type fh_type = 0; 1754 1755 switch (vdev->vfl_type) { 1756 case VFL_TYPE_GRABBER: 1757 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1758 break; 1759 case VFL_TYPE_VBI: 1760 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; 1761 break; 1762 case VFL_TYPE_RADIO: 1763 radio = 1; 1764 break; 1765 default: 1766 return -EINVAL; 1767 } 1768 1769 cx231xx_videodbg("open dev=%s type=%s users=%d\n", 1770 video_device_node_name(vdev), v4l2_type_names[fh_type], 1771 dev->users); 1772 1773 #if 0 1774 errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); 1775 if (errCode < 0) { 1776 dev_err(dev->dev, 1777 "Device locked on digital mode. Can't open analog\n"); 1778 return -EBUSY; 1779 } 1780 #endif 1781 1782 fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL); 1783 if (!fh) 1784 return -ENOMEM; 1785 if (mutex_lock_interruptible(&dev->lock)) { 1786 kfree(fh); 1787 return -ERESTARTSYS; 1788 } 1789 fh->dev = dev; 1790 fh->type = fh_type; 1791 filp->private_data = fh; 1792 v4l2_fh_init(&fh->fh, vdev); 1793 1794 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { 1795 /* Power up in Analog TV mode */ 1796 if (dev->board.external_av) 1797 cx231xx_set_power_mode(dev, 1798 POLARIS_AVMODE_ENXTERNAL_AV); 1799 else 1800 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV); 1801 1802 #if 0 1803 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); 1804 #endif 1805 1806 /* set video alternate setting */ 1807 cx231xx_set_video_alternate(dev); 1808 1809 /* Needed, since GPIO might have disabled power of 1810 some i2c device */ 1811 cx231xx_config_i2c(dev); 1812 1813 /* device needs to be initialized before isoc transfer */ 1814 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input; 1815 1816 } 1817 if (radio) { 1818 cx231xx_videodbg("video_open: setting radio device\n"); 1819 1820 /* cx231xx_start_radio(dev); */ 1821 1822 call_all(dev, tuner, s_radio); 1823 } 1824 1825 dev->users++; 1826 1827 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 1828 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops, 1829 NULL, &dev->video_mode.slock, 1830 fh->type, V4L2_FIELD_INTERLACED, 1831 sizeof(struct cx231xx_buffer), 1832 fh, &dev->lock); 1833 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { 1834 /* Set the required alternate setting VBI interface works in 1835 Bulk mode only */ 1836 cx231xx_set_alt_setting(dev, INDEX_VANC, 0); 1837 1838 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops, 1839 NULL, &dev->vbi_mode.slock, 1840 fh->type, V4L2_FIELD_SEQ_TB, 1841 sizeof(struct cx231xx_buffer), 1842 fh, &dev->lock); 1843 } 1844 mutex_unlock(&dev->lock); 1845 v4l2_fh_add(&fh->fh); 1846 1847 return 0; 1848 } 1849 1850 /* 1851 * cx231xx_realease_resources() 1852 * unregisters the v4l2,i2c and usb devices 1853 * called when the device gets disconected or at module unload 1854 */ 1855 void cx231xx_release_analog_resources(struct cx231xx *dev) 1856 { 1857 1858 /*FIXME: I2C IR should be disconnected */ 1859 1860 if (video_is_registered(&dev->radio_dev)) 1861 video_unregister_device(&dev->radio_dev); 1862 if (video_is_registered(&dev->vbi_dev)) { 1863 dev_info(dev->dev, "V4L2 device %s deregistered\n", 1864 video_device_node_name(&dev->vbi_dev)); 1865 video_unregister_device(&dev->vbi_dev); 1866 } 1867 if (video_is_registered(&dev->vdev)) { 1868 dev_info(dev->dev, "V4L2 device %s deregistered\n", 1869 video_device_node_name(&dev->vdev)); 1870 1871 if (dev->board.has_417) 1872 cx231xx_417_unregister(dev); 1873 1874 video_unregister_device(&dev->vdev); 1875 } 1876 v4l2_ctrl_handler_free(&dev->ctrl_handler); 1877 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler); 1878 } 1879 1880 /* 1881 * cx231xx_close() 1882 * stops streaming and deallocates all resources allocated by the v4l2 1883 * calls and ioctls 1884 */ 1885 static int cx231xx_close(struct file *filp) 1886 { 1887 struct cx231xx_fh *fh = filp->private_data; 1888 struct cx231xx *dev = fh->dev; 1889 1890 cx231xx_videodbg("users=%d\n", dev->users); 1891 1892 cx231xx_videodbg("users=%d\n", dev->users); 1893 if (res_check(fh)) 1894 res_free(fh); 1895 1896 /* 1897 * To workaround error number=-71 on EP0 for VideoGrabber, 1898 * need exclude following. 1899 * FIXME: It is probably safe to remove most of these, as we're 1900 * now avoiding the alternate setting for INDEX_VANC 1901 */ 1902 if (!dev->board.no_alt_vanc) 1903 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { 1904 videobuf_stop(&fh->vb_vidq); 1905 videobuf_mmap_free(&fh->vb_vidq); 1906 1907 /* the device is already disconnect, 1908 free the remaining resources */ 1909 if (dev->state & DEV_DISCONNECTED) { 1910 if (atomic_read(&dev->devlist_count) > 0) { 1911 cx231xx_release_resources(dev); 1912 fh->dev = NULL; 1913 return 0; 1914 } 1915 return 0; 1916 } 1917 1918 /* do this before setting alternate! */ 1919 cx231xx_uninit_vbi_isoc(dev); 1920 1921 /* set alternate 0 */ 1922 if (!dev->vbi_or_sliced_cc_mode) 1923 cx231xx_set_alt_setting(dev, INDEX_VANC, 0); 1924 else 1925 cx231xx_set_alt_setting(dev, INDEX_HANC, 0); 1926 1927 v4l2_fh_del(&fh->fh); 1928 v4l2_fh_exit(&fh->fh); 1929 kfree(fh); 1930 dev->users--; 1931 wake_up_interruptible(&dev->open); 1932 return 0; 1933 } 1934 1935 v4l2_fh_del(&fh->fh); 1936 dev->users--; 1937 if (!dev->users) { 1938 videobuf_stop(&fh->vb_vidq); 1939 videobuf_mmap_free(&fh->vb_vidq); 1940 1941 /* the device is already disconnect, 1942 free the remaining resources */ 1943 if (dev->state & DEV_DISCONNECTED) { 1944 cx231xx_release_resources(dev); 1945 fh->dev = NULL; 1946 return 0; 1947 } 1948 1949 /* Save some power by putting tuner to sleep */ 1950 call_all(dev, tuner, standby); 1951 1952 /* do this before setting alternate! */ 1953 if (dev->USE_ISO) 1954 cx231xx_uninit_isoc(dev); 1955 else 1956 cx231xx_uninit_bulk(dev); 1957 cx231xx_set_mode(dev, CX231XX_SUSPEND); 1958 1959 /* set alternate 0 */ 1960 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0); 1961 } 1962 v4l2_fh_exit(&fh->fh); 1963 kfree(fh); 1964 wake_up_interruptible(&dev->open); 1965 return 0; 1966 } 1967 1968 static int cx231xx_v4l2_close(struct file *filp) 1969 { 1970 struct cx231xx_fh *fh = filp->private_data; 1971 struct cx231xx *dev = fh->dev; 1972 int rc; 1973 1974 mutex_lock(&dev->lock); 1975 rc = cx231xx_close(filp); 1976 mutex_unlock(&dev->lock); 1977 return rc; 1978 } 1979 1980 /* 1981 * cx231xx_v4l2_read() 1982 * will allocate buffers when called for the first time 1983 */ 1984 static ssize_t 1985 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count, 1986 loff_t *pos) 1987 { 1988 struct cx231xx_fh *fh = filp->private_data; 1989 struct cx231xx *dev = fh->dev; 1990 int rc; 1991 1992 rc = check_dev(dev); 1993 if (rc < 0) 1994 return rc; 1995 1996 if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) || 1997 (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) { 1998 rc = res_get(fh); 1999 2000 if (unlikely(rc < 0)) 2001 return rc; 2002 2003 if (mutex_lock_interruptible(&dev->lock)) 2004 return -ERESTARTSYS; 2005 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, 2006 filp->f_flags & O_NONBLOCK); 2007 mutex_unlock(&dev->lock); 2008 return rc; 2009 } 2010 return 0; 2011 } 2012 2013 /* 2014 * cx231xx_v4l2_poll() 2015 * will allocate buffers when called for the first time 2016 */ 2017 static __poll_t cx231xx_v4l2_poll(struct file *filp, poll_table *wait) 2018 { 2019 __poll_t req_events = poll_requested_events(wait); 2020 struct cx231xx_fh *fh = filp->private_data; 2021 struct cx231xx *dev = fh->dev; 2022 __poll_t res = 0; 2023 int rc; 2024 2025 rc = check_dev(dev); 2026 if (rc < 0) 2027 return EPOLLERR; 2028 2029 rc = res_get(fh); 2030 2031 if (unlikely(rc < 0)) 2032 return EPOLLERR; 2033 2034 if (v4l2_event_pending(&fh->fh)) 2035 res |= EPOLLPRI; 2036 else 2037 poll_wait(filp, &fh->fh.wait, wait); 2038 2039 if (!(req_events & (EPOLLIN | EPOLLRDNORM))) 2040 return res; 2041 2042 if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) || 2043 (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) { 2044 mutex_lock(&dev->lock); 2045 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait); 2046 mutex_unlock(&dev->lock); 2047 return res; 2048 } 2049 return res | EPOLLERR; 2050 } 2051 2052 /* 2053 * cx231xx_v4l2_mmap() 2054 */ 2055 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) 2056 { 2057 struct cx231xx_fh *fh = filp->private_data; 2058 struct cx231xx *dev = fh->dev; 2059 int rc; 2060 2061 rc = check_dev(dev); 2062 if (rc < 0) 2063 return rc; 2064 2065 rc = res_get(fh); 2066 2067 if (unlikely(rc < 0)) 2068 return rc; 2069 2070 if (mutex_lock_interruptible(&dev->lock)) 2071 return -ERESTARTSYS; 2072 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); 2073 mutex_unlock(&dev->lock); 2074 2075 cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n", 2076 (unsigned long)vma->vm_start, 2077 (unsigned long)vma->vm_end - 2078 (unsigned long)vma->vm_start, rc); 2079 2080 return rc; 2081 } 2082 2083 static const struct v4l2_file_operations cx231xx_v4l_fops = { 2084 .owner = THIS_MODULE, 2085 .open = cx231xx_v4l2_open, 2086 .release = cx231xx_v4l2_close, 2087 .read = cx231xx_v4l2_read, 2088 .poll = cx231xx_v4l2_poll, 2089 .mmap = cx231xx_v4l2_mmap, 2090 .unlocked_ioctl = video_ioctl2, 2091 }; 2092 2093 static const struct v4l2_ioctl_ops video_ioctl_ops = { 2094 .vidioc_querycap = cx231xx_querycap, 2095 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 2096 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 2097 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, 2098 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 2099 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 2100 .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap, 2101 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, 2102 .vidioc_g_pixelaspect = vidioc_g_pixelaspect, 2103 .vidioc_g_selection = vidioc_g_selection, 2104 .vidioc_reqbufs = vidioc_reqbufs, 2105 .vidioc_querybuf = vidioc_querybuf, 2106 .vidioc_qbuf = vidioc_qbuf, 2107 .vidioc_dqbuf = vidioc_dqbuf, 2108 .vidioc_s_std = vidioc_s_std, 2109 .vidioc_g_std = vidioc_g_std, 2110 .vidioc_enum_input = cx231xx_enum_input, 2111 .vidioc_g_input = cx231xx_g_input, 2112 .vidioc_s_input = cx231xx_s_input, 2113 .vidioc_streamon = vidioc_streamon, 2114 .vidioc_streamoff = vidioc_streamoff, 2115 .vidioc_g_tuner = cx231xx_g_tuner, 2116 .vidioc_s_tuner = cx231xx_s_tuner, 2117 .vidioc_g_frequency = cx231xx_g_frequency, 2118 .vidioc_s_frequency = cx231xx_s_frequency, 2119 #ifdef CONFIG_VIDEO_ADV_DEBUG 2120 .vidioc_g_chip_info = cx231xx_g_chip_info, 2121 .vidioc_g_register = cx231xx_g_register, 2122 .vidioc_s_register = cx231xx_s_register, 2123 #endif 2124 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 2125 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 2126 }; 2127 2128 static struct video_device cx231xx_vbi_template; 2129 2130 static const struct video_device cx231xx_video_template = { 2131 .fops = &cx231xx_v4l_fops, 2132 .release = video_device_release_empty, 2133 .ioctl_ops = &video_ioctl_ops, 2134 .tvnorms = V4L2_STD_ALL, 2135 }; 2136 2137 static const struct v4l2_file_operations radio_fops = { 2138 .owner = THIS_MODULE, 2139 .open = cx231xx_v4l2_open, 2140 .release = cx231xx_v4l2_close, 2141 .poll = v4l2_ctrl_poll, 2142 .unlocked_ioctl = video_ioctl2, 2143 }; 2144 2145 static const struct v4l2_ioctl_ops radio_ioctl_ops = { 2146 .vidioc_querycap = cx231xx_querycap, 2147 .vidioc_g_tuner = radio_g_tuner, 2148 .vidioc_s_tuner = radio_s_tuner, 2149 .vidioc_g_frequency = cx231xx_g_frequency, 2150 .vidioc_s_frequency = cx231xx_s_frequency, 2151 #ifdef CONFIG_VIDEO_ADV_DEBUG 2152 .vidioc_g_chip_info = cx231xx_g_chip_info, 2153 .vidioc_g_register = cx231xx_g_register, 2154 .vidioc_s_register = cx231xx_s_register, 2155 #endif 2156 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 2157 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 2158 }; 2159 2160 static struct video_device cx231xx_radio_template = { 2161 .name = "cx231xx-radio", 2162 .fops = &radio_fops, 2163 .ioctl_ops = &radio_ioctl_ops, 2164 }; 2165 2166 /******************************** usb interface ******************************/ 2167 2168 static void cx231xx_vdev_init(struct cx231xx *dev, 2169 struct video_device *vfd, 2170 const struct video_device *template, 2171 const char *type_name) 2172 { 2173 *vfd = *template; 2174 vfd->v4l2_dev = &dev->v4l2_dev; 2175 vfd->release = video_device_release_empty; 2176 vfd->lock = &dev->lock; 2177 2178 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name); 2179 2180 video_set_drvdata(vfd, dev); 2181 if (dev->tuner_type == TUNER_ABSENT) { 2182 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY); 2183 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY); 2184 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER); 2185 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER); 2186 } 2187 } 2188 2189 int cx231xx_register_analog_devices(struct cx231xx *dev) 2190 { 2191 int ret; 2192 2193 dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION); 2194 2195 /* set default norm */ 2196 dev->norm = V4L2_STD_PAL; 2197 dev->width = norm_maxw(dev); 2198 dev->height = norm_maxh(dev); 2199 dev->interlaced = 0; 2200 2201 /* Analog specific initialization */ 2202 dev->format = &format[0]; 2203 2204 /* Set the initial input */ 2205 video_mux(dev, dev->video_input); 2206 2207 call_all(dev, video, s_std, dev->norm); 2208 2209 v4l2_ctrl_handler_init(&dev->ctrl_handler, 10); 2210 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5); 2211 2212 if (dev->sd_cx25840) { 2213 v4l2_ctrl_add_handler(&dev->ctrl_handler, 2214 dev->sd_cx25840->ctrl_handler, NULL, true); 2215 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler, 2216 dev->sd_cx25840->ctrl_handler, 2217 v4l2_ctrl_radio_filter, true); 2218 } 2219 2220 if (dev->ctrl_handler.error) 2221 return dev->ctrl_handler.error; 2222 if (dev->radio_ctrl_handler.error) 2223 return dev->radio_ctrl_handler.error; 2224 2225 /* enable vbi capturing */ 2226 /* write code here... */ 2227 2228 /* allocate and fill video video_device struct */ 2229 cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video"); 2230 #if defined(CONFIG_MEDIA_CONTROLLER) 2231 dev->video_pad.flags = MEDIA_PAD_FL_SINK; 2232 ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad); 2233 if (ret < 0) 2234 dev_err(dev->dev, "failed to initialize video media entity!\n"); 2235 #endif 2236 dev->vdev.ctrl_handler = &dev->ctrl_handler; 2237 /* register v4l2 video video_device */ 2238 ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, 2239 video_nr[dev->devno]); 2240 if (ret) { 2241 dev_err(dev->dev, 2242 "unable to register video device (error=%i).\n", 2243 ret); 2244 return ret; 2245 } 2246 2247 dev_info(dev->dev, "Registered video device %s [v4l2]\n", 2248 video_device_node_name(&dev->vdev)); 2249 2250 /* Initialize VBI template */ 2251 cx231xx_vbi_template = cx231xx_video_template; 2252 strscpy(cx231xx_vbi_template.name, "cx231xx-vbi", 2253 sizeof(cx231xx_vbi_template.name)); 2254 2255 /* Allocate and fill vbi video_device struct */ 2256 cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi"); 2257 2258 #if defined(CONFIG_MEDIA_CONTROLLER) 2259 dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; 2260 ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); 2261 if (ret < 0) 2262 dev_err(dev->dev, "failed to initialize vbi media entity!\n"); 2263 #endif 2264 dev->vbi_dev.ctrl_handler = &dev->ctrl_handler; 2265 /* register v4l2 vbi video_device */ 2266 ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, 2267 vbi_nr[dev->devno]); 2268 if (ret < 0) { 2269 dev_err(dev->dev, "unable to register vbi device\n"); 2270 return ret; 2271 } 2272 2273 dev_info(dev->dev, "Registered VBI device %s\n", 2274 video_device_node_name(&dev->vbi_dev)); 2275 2276 if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) { 2277 cx231xx_vdev_init(dev, &dev->radio_dev, 2278 &cx231xx_radio_template, "radio"); 2279 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler; 2280 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO, 2281 radio_nr[dev->devno]); 2282 if (ret < 0) { 2283 dev_err(dev->dev, 2284 "can't register radio device\n"); 2285 return ret; 2286 } 2287 dev_info(dev->dev, "Registered radio device as %s\n", 2288 video_device_node_name(&dev->radio_dev)); 2289 } 2290 2291 return 0; 2292 } 2293