1 /* 2 cx231xx-video.c - driver for Conexant Cx23100/101/102 3 USB video capture devices 4 5 Copyright (C) 2008 <srinivasa.deevi at conexant dot com> 6 Based on em28xx driver 7 Based on cx23885 driver 8 Based on cx88 driver 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 2 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 23 */ 24 25 #include "cx231xx.h" 26 #include <linux/init.h> 27 #include <linux/list.h> 28 #include <linux/module.h> 29 #include <linux/kernel.h> 30 #include <linux/bitmap.h> 31 #include <linux/i2c.h> 32 #include <linux/mm.h> 33 #include <linux/mutex.h> 34 #include <linux/slab.h> 35 36 #include <media/v4l2-common.h> 37 #include <media/v4l2-ioctl.h> 38 #include <media/v4l2-event.h> 39 #include <media/drv-intf/msp3400.h> 40 #include <media/tuner.h> 41 42 #include <media/dvb_frontend.h> 43 44 #include "cx231xx-vbi.h" 45 46 #define CX231XX_VERSION "0.0.3" 47 48 #define DRIVER_AUTHOR "Srinivasa Deevi <srinivasa.deevi@conexant.com>" 49 #define DRIVER_DESC "Conexant cx231xx based USB video device driver" 50 51 #define cx231xx_videodbg(fmt, arg...) do {\ 52 if (video_debug) \ 53 printk(KERN_INFO "%s %s :"fmt, \ 54 dev->name, __func__ , ##arg); } while (0) 55 56 static unsigned int isoc_debug; 57 module_param(isoc_debug, int, 0644); 58 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); 59 60 #define cx231xx_isocdbg(fmt, arg...) \ 61 do {\ 62 if (isoc_debug) { \ 63 printk(KERN_INFO "%s %s :"fmt, \ 64 dev->name, __func__ , ##arg); \ 65 } \ 66 } while (0) 67 68 MODULE_AUTHOR(DRIVER_AUTHOR); 69 MODULE_DESCRIPTION(DRIVER_DESC); 70 MODULE_LICENSE("GPL"); 71 MODULE_VERSION(CX231XX_VERSION); 72 73 static unsigned int card[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; 74 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; 75 static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; 76 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET }; 77 78 module_param_array(card, int, NULL, 0444); 79 module_param_array(video_nr, int, NULL, 0444); 80 module_param_array(vbi_nr, int, NULL, 0444); 81 module_param_array(radio_nr, int, NULL, 0444); 82 83 MODULE_PARM_DESC(card, "card type"); 84 MODULE_PARM_DESC(video_nr, "video device numbers"); 85 MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); 86 MODULE_PARM_DESC(radio_nr, "radio device numbers"); 87 88 static unsigned int video_debug; 89 module_param(video_debug, int, 0644); 90 MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); 91 92 /* supported video standards */ 93 static struct cx231xx_fmt format[] = { 94 { 95 .name = "16bpp YUY2, 4:2:2, packed", 96 .fourcc = V4L2_PIX_FMT_YUYV, 97 .depth = 16, 98 .reg = 0, 99 }, 100 }; 101 102 103 static int cx231xx_enable_analog_tuner(struct cx231xx *dev) 104 { 105 #ifdef CONFIG_MEDIA_CONTROLLER 106 struct media_device *mdev = dev->media_dev; 107 struct media_entity *entity, *decoder = NULL, *source; 108 struct media_link *link, *found_link = NULL; 109 int ret, active_links = 0; 110 111 if (!mdev) 112 return 0; 113 114 /* 115 * This will find the tuner that is connected into the decoder. 116 * Technically, this is not 100% correct, as the device may be 117 * using an analog input instead of the tuner. However, as we can't 118 * do DVB streaming while the DMA engine is being used for V4L2, 119 * this should be enough for the actual needs. 120 */ 121 media_device_for_each_entity(entity, mdev) { 122 if (entity->function == MEDIA_ENT_F_ATV_DECODER) { 123 decoder = entity; 124 break; 125 } 126 } 127 if (!decoder) 128 return 0; 129 130 list_for_each_entry(link, &decoder->links, list) { 131 if (link->sink->entity == decoder) { 132 found_link = link; 133 if (link->flags & MEDIA_LNK_FL_ENABLED) 134 active_links++; 135 break; 136 } 137 } 138 139 if (active_links == 1 || !found_link) 140 return 0; 141 142 source = found_link->source->entity; 143 list_for_each_entry(link, &source->links, list) { 144 struct media_entity *sink; 145 int flags = 0; 146 147 sink = link->sink->entity; 148 149 if (sink == entity) 150 flags = MEDIA_LNK_FL_ENABLED; 151 152 ret = media_entity_setup_link(link, flags); 153 if (ret) { 154 dev_err(dev->dev, 155 "Couldn't change link %s->%s to %s. Error %d\n", 156 source->name, sink->name, 157 flags ? "enabled" : "disabled", 158 ret); 159 return ret; 160 } else 161 dev_dbg(dev->dev, 162 "link %s->%s was %s\n", 163 source->name, sink->name, 164 flags ? "ENABLED" : "disabled"); 165 } 166 #endif 167 return 0; 168 } 169 170 /* ------------------------------------------------------------------ 171 Video buffer and parser functions 172 ------------------------------------------------------------------*/ 173 174 /* 175 * Announces that a buffer were filled and request the next 176 */ 177 static inline void buffer_filled(struct cx231xx *dev, 178 struct cx231xx_dmaqueue *dma_q, 179 struct cx231xx_buffer *buf) 180 { 181 /* Advice that buffer was filled */ 182 cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); 183 buf->vb.state = VIDEOBUF_DONE; 184 buf->vb.field_count++; 185 v4l2_get_timestamp(&buf->vb.ts); 186 187 if (dev->USE_ISO) 188 dev->video_mode.isoc_ctl.buf = NULL; 189 else 190 dev->video_mode.bulk_ctl.buf = NULL; 191 192 list_del(&buf->vb.queue); 193 wake_up(&buf->vb.done); 194 } 195 196 static inline void print_err_status(struct cx231xx *dev, int packet, int status) 197 { 198 char *errmsg = "Unknown"; 199 200 switch (status) { 201 case -ENOENT: 202 errmsg = "unlinked synchronously"; 203 break; 204 case -ECONNRESET: 205 errmsg = "unlinked asynchronously"; 206 break; 207 case -ENOSR: 208 errmsg = "Buffer error (overrun)"; 209 break; 210 case -EPIPE: 211 errmsg = "Stalled (device not responding)"; 212 break; 213 case -EOVERFLOW: 214 errmsg = "Babble (bad cable?)"; 215 break; 216 case -EPROTO: 217 errmsg = "Bit-stuff error (bad cable?)"; 218 break; 219 case -EILSEQ: 220 errmsg = "CRC/Timeout (could be anything)"; 221 break; 222 case -ETIME: 223 errmsg = "Device does not respond"; 224 break; 225 } 226 if (packet < 0) { 227 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg); 228 } else { 229 cx231xx_isocdbg("URB packet %d, status %d [%s].\n", 230 packet, status, errmsg); 231 } 232 } 233 234 /* 235 * video-buf generic routine to get the next available buffer 236 */ 237 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q, 238 struct cx231xx_buffer **buf) 239 { 240 struct cx231xx_video_mode *vmode = 241 container_of(dma_q, struct cx231xx_video_mode, vidq); 242 struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode); 243 244 char *outp; 245 246 if (list_empty(&dma_q->active)) { 247 cx231xx_isocdbg("No active queue to serve\n"); 248 if (dev->USE_ISO) 249 dev->video_mode.isoc_ctl.buf = NULL; 250 else 251 dev->video_mode.bulk_ctl.buf = NULL; 252 *buf = NULL; 253 return; 254 } 255 256 /* Get the next buffer */ 257 *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue); 258 259 /* Cleans up buffer - Useful for testing for frame/URB loss */ 260 outp = videobuf_to_vmalloc(&(*buf)->vb); 261 memset(outp, 0, (*buf)->vb.size); 262 263 if (dev->USE_ISO) 264 dev->video_mode.isoc_ctl.buf = *buf; 265 else 266 dev->video_mode.bulk_ctl.buf = *buf; 267 268 return; 269 } 270 271 /* 272 * Controls the isoc copy of each urb packet 273 */ 274 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb) 275 { 276 struct cx231xx_dmaqueue *dma_q = urb->context; 277 int i; 278 unsigned char *p_buffer; 279 u32 bytes_parsed = 0, buffer_size = 0; 280 u8 sav_eav = 0; 281 282 if (!dev) 283 return 0; 284 285 if (dev->state & DEV_DISCONNECTED) 286 return 0; 287 288 if (urb->status < 0) { 289 print_err_status(dev, -1, urb->status); 290 if (urb->status == -ENOENT) 291 return 0; 292 } 293 294 for (i = 0; i < urb->number_of_packets; i++) { 295 int status = urb->iso_frame_desc[i].status; 296 297 if (status < 0) { 298 print_err_status(dev, i, status); 299 if (urb->iso_frame_desc[i].status != -EPROTO) 300 continue; 301 } 302 303 if (urb->iso_frame_desc[i].actual_length <= 0) { 304 /* cx231xx_isocdbg("packet %d is empty",i); - spammy */ 305 continue; 306 } 307 if (urb->iso_frame_desc[i].actual_length > 308 dev->video_mode.max_pkt_size) { 309 cx231xx_isocdbg("packet bigger than packet size"); 310 continue; 311 } 312 313 /* get buffer pointer and length */ 314 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset; 315 buffer_size = urb->iso_frame_desc[i].actual_length; 316 bytes_parsed = 0; 317 318 if (dma_q->is_partial_line) { 319 /* Handle the case of a partial line */ 320 sav_eav = dma_q->last_sav; 321 } else { 322 /* Check for a SAV/EAV overlapping 323 the buffer boundary */ 324 sav_eav = 325 cx231xx_find_boundary_SAV_EAV(p_buffer, 326 dma_q->partial_buf, 327 &bytes_parsed); 328 } 329 330 sav_eav &= 0xF0; 331 /* Get the first line if we have some portion of an SAV/EAV from 332 the last buffer or a partial line */ 333 if (sav_eav) { 334 bytes_parsed += cx231xx_get_video_line(dev, dma_q, 335 sav_eav, /* SAV/EAV */ 336 p_buffer + bytes_parsed, /* p_buffer */ 337 buffer_size - bytes_parsed);/* buf size */ 338 } 339 340 /* Now parse data that is completely in this buffer */ 341 /* dma_q->is_partial_line = 0; */ 342 343 while (bytes_parsed < buffer_size) { 344 u32 bytes_used = 0; 345 346 sav_eav = cx231xx_find_next_SAV_EAV( 347 p_buffer + bytes_parsed, /* p_buffer */ 348 buffer_size - bytes_parsed, /* buf size */ 349 &bytes_used);/* bytes used to get SAV/EAV */ 350 351 bytes_parsed += bytes_used; 352 353 sav_eav &= 0xF0; 354 if (sav_eav && (bytes_parsed < buffer_size)) { 355 bytes_parsed += cx231xx_get_video_line(dev, 356 dma_q, sav_eav, /* SAV/EAV */ 357 p_buffer + bytes_parsed,/* p_buffer */ 358 buffer_size - bytes_parsed);/*buf size*/ 359 } 360 } 361 362 /* Save the last four bytes of the buffer so we can check the 363 buffer boundary condition next time */ 364 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4); 365 bytes_parsed = 0; 366 367 } 368 return 1; 369 } 370 371 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb) 372 { 373 struct cx231xx_dmaqueue *dma_q = urb->context; 374 unsigned char *p_buffer; 375 u32 bytes_parsed = 0, buffer_size = 0; 376 u8 sav_eav = 0; 377 378 if (!dev) 379 return 0; 380 381 if (dev->state & DEV_DISCONNECTED) 382 return 0; 383 384 if (urb->status < 0) { 385 print_err_status(dev, -1, urb->status); 386 if (urb->status == -ENOENT) 387 return 0; 388 } 389 390 if (1) { 391 392 /* get buffer pointer and length */ 393 p_buffer = urb->transfer_buffer; 394 buffer_size = urb->actual_length; 395 bytes_parsed = 0; 396 397 if (dma_q->is_partial_line) { 398 /* Handle the case of a partial line */ 399 sav_eav = dma_q->last_sav; 400 } else { 401 /* Check for a SAV/EAV overlapping 402 the buffer boundary */ 403 sav_eav = 404 cx231xx_find_boundary_SAV_EAV(p_buffer, 405 dma_q->partial_buf, 406 &bytes_parsed); 407 } 408 409 sav_eav &= 0xF0; 410 /* Get the first line if we have some portion of an SAV/EAV from 411 the last buffer or a partial line */ 412 if (sav_eav) { 413 bytes_parsed += cx231xx_get_video_line(dev, dma_q, 414 sav_eav, /* SAV/EAV */ 415 p_buffer + bytes_parsed, /* p_buffer */ 416 buffer_size - bytes_parsed);/* buf size */ 417 } 418 419 /* Now parse data that is completely in this buffer */ 420 /* dma_q->is_partial_line = 0; */ 421 422 while (bytes_parsed < buffer_size) { 423 u32 bytes_used = 0; 424 425 sav_eav = cx231xx_find_next_SAV_EAV( 426 p_buffer + bytes_parsed, /* p_buffer */ 427 buffer_size - bytes_parsed, /* buf size */ 428 &bytes_used);/* bytes used to get SAV/EAV */ 429 430 bytes_parsed += bytes_used; 431 432 sav_eav &= 0xF0; 433 if (sav_eav && (bytes_parsed < buffer_size)) { 434 bytes_parsed += cx231xx_get_video_line(dev, 435 dma_q, sav_eav, /* SAV/EAV */ 436 p_buffer + bytes_parsed,/* p_buffer */ 437 buffer_size - bytes_parsed);/*buf size*/ 438 } 439 } 440 441 /* Save the last four bytes of the buffer so we can check the 442 buffer boundary condition next time */ 443 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4); 444 bytes_parsed = 0; 445 446 } 447 return 1; 448 } 449 450 451 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf, 452 u32 *p_bytes_used) 453 { 454 u32 bytes_used; 455 u8 boundary_bytes[8]; 456 u8 sav_eav = 0; 457 458 *p_bytes_used = 0; 459 460 /* Create an array of the last 4 bytes of the last buffer and the first 461 4 bytes of the current buffer. */ 462 463 memcpy(boundary_bytes, partial_buf, 4); 464 memcpy(boundary_bytes + 4, p_buffer, 4); 465 466 /* Check for the SAV/EAV in the boundary buffer */ 467 sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8, 468 &bytes_used); 469 470 if (sav_eav) { 471 /* found a boundary SAV/EAV. Updates the bytes used to reflect 472 only those used in the new buffer */ 473 *p_bytes_used = bytes_used - 4; 474 } 475 476 return sav_eav; 477 } 478 479 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used) 480 { 481 u32 i; 482 u8 sav_eav = 0; 483 484 /* 485 * Don't search if the buffer size is less than 4. It causes a page 486 * fault since buffer_size - 4 evaluates to a large number in that 487 * case. 488 */ 489 if (buffer_size < 4) { 490 *p_bytes_used = buffer_size; 491 return 0; 492 } 493 494 for (i = 0; i < (buffer_size - 3); i++) { 495 496 if ((p_buffer[i] == 0xFF) && 497 (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) { 498 499 *p_bytes_used = i + 4; 500 sav_eav = p_buffer[i + 3]; 501 return sav_eav; 502 } 503 } 504 505 *p_bytes_used = buffer_size; 506 return 0; 507 } 508 509 u32 cx231xx_get_video_line(struct cx231xx *dev, 510 struct cx231xx_dmaqueue *dma_q, u8 sav_eav, 511 u8 *p_buffer, u32 buffer_size) 512 { 513 u32 bytes_copied = 0; 514 int current_field = -1; 515 516 switch (sav_eav) { 517 case SAV_ACTIVE_VIDEO_FIELD1: 518 /* looking for skipped line which occurred in PAL 720x480 mode. 519 In this case, there will be no active data contained 520 between the SAV and EAV */ 521 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) && 522 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) && 523 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) || 524 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) || 525 (p_buffer[3] == EAV_VBLANK_FIELD1) || 526 (p_buffer[3] == EAV_VBLANK_FIELD2))) 527 return bytes_copied; 528 current_field = 1; 529 break; 530 531 case SAV_ACTIVE_VIDEO_FIELD2: 532 /* looking for skipped line which occurred in PAL 720x480 mode. 533 In this case, there will be no active data contained between 534 the SAV and EAV */ 535 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) && 536 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) && 537 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) || 538 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) || 539 (p_buffer[3] == EAV_VBLANK_FIELD1) || 540 (p_buffer[3] == EAV_VBLANK_FIELD2))) 541 return bytes_copied; 542 current_field = 2; 543 break; 544 } 545 546 dma_q->last_sav = sav_eav; 547 548 bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer, 549 buffer_size, current_field); 550 551 return bytes_copied; 552 } 553 554 u32 cx231xx_copy_video_line(struct cx231xx *dev, 555 struct cx231xx_dmaqueue *dma_q, u8 *p_line, 556 u32 length, int field_number) 557 { 558 u32 bytes_to_copy; 559 struct cx231xx_buffer *buf; 560 u32 _line_size = dev->width * 2; 561 562 if (dma_q->current_field != field_number) 563 cx231xx_reset_video_buffer(dev, dma_q); 564 565 /* get the buffer pointer */ 566 if (dev->USE_ISO) 567 buf = dev->video_mode.isoc_ctl.buf; 568 else 569 buf = dev->video_mode.bulk_ctl.buf; 570 571 /* Remember the field number for next time */ 572 dma_q->current_field = field_number; 573 574 bytes_to_copy = dma_q->bytes_left_in_line; 575 if (bytes_to_copy > length) 576 bytes_to_copy = length; 577 578 if (dma_q->lines_completed >= dma_q->lines_per_field) { 579 dma_q->bytes_left_in_line -= bytes_to_copy; 580 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ? 581 0 : 1; 582 return 0; 583 } 584 585 dma_q->is_partial_line = 1; 586 587 /* If we don't have a buffer, just return the number of bytes we would 588 have copied if we had a buffer. */ 589 if (!buf) { 590 dma_q->bytes_left_in_line -= bytes_to_copy; 591 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) 592 ? 0 : 1; 593 return bytes_to_copy; 594 } 595 596 /* copy the data to video buffer */ 597 cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy); 598 599 dma_q->pos += bytes_to_copy; 600 dma_q->bytes_left_in_line -= bytes_to_copy; 601 602 if (dma_q->bytes_left_in_line == 0) { 603 dma_q->bytes_left_in_line = _line_size; 604 dma_q->lines_completed++; 605 dma_q->is_partial_line = 0; 606 607 if (cx231xx_is_buffer_done(dev, dma_q) && buf) { 608 buffer_filled(dev, dma_q, buf); 609 610 dma_q->pos = 0; 611 buf = NULL; 612 dma_q->lines_completed = 0; 613 } 614 } 615 616 return bytes_to_copy; 617 } 618 619 void cx231xx_reset_video_buffer(struct cx231xx *dev, 620 struct cx231xx_dmaqueue *dma_q) 621 { 622 struct cx231xx_buffer *buf; 623 624 /* handle the switch from field 1 to field 2 */ 625 if (dma_q->current_field == 1) { 626 if (dma_q->lines_completed >= dma_q->lines_per_field) 627 dma_q->field1_done = 1; 628 else 629 dma_q->field1_done = 0; 630 } 631 632 if (dev->USE_ISO) 633 buf = dev->video_mode.isoc_ctl.buf; 634 else 635 buf = dev->video_mode.bulk_ctl.buf; 636 637 if (buf == NULL) { 638 /* first try to get the buffer */ 639 get_next_buf(dma_q, &buf); 640 641 dma_q->pos = 0; 642 dma_q->field1_done = 0; 643 dma_q->current_field = -1; 644 } 645 646 /* reset the counters */ 647 dma_q->bytes_left_in_line = dev->width << 1; 648 dma_q->lines_completed = 0; 649 } 650 651 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, 652 u8 *p_buffer, u32 bytes_to_copy) 653 { 654 u8 *p_out_buffer = NULL; 655 u32 current_line_bytes_copied = 0; 656 struct cx231xx_buffer *buf; 657 u32 _line_size = dev->width << 1; 658 void *startwrite; 659 int offset, lencopy; 660 661 if (dev->USE_ISO) 662 buf = dev->video_mode.isoc_ctl.buf; 663 else 664 buf = dev->video_mode.bulk_ctl.buf; 665 666 if (buf == NULL) 667 return -1; 668 669 p_out_buffer = videobuf_to_vmalloc(&buf->vb); 670 671 current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line; 672 673 /* Offset field 2 one line from the top of the buffer */ 674 offset = (dma_q->current_field == 1) ? 0 : _line_size; 675 676 /* Offset for field 2 */ 677 startwrite = p_out_buffer + offset; 678 679 /* lines already completed in the current field */ 680 startwrite += (dma_q->lines_completed * _line_size * 2); 681 682 /* bytes already completed in the current line */ 683 startwrite += current_line_bytes_copied; 684 685 lencopy = dma_q->bytes_left_in_line > bytes_to_copy ? 686 bytes_to_copy : dma_q->bytes_left_in_line; 687 688 if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size)) 689 return 0; 690 691 /* The below copies the UYVY data straight into video buffer */ 692 cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy); 693 694 return 0; 695 } 696 697 void cx231xx_swab(u16 *from, u16 *to, u16 len) 698 { 699 u16 i; 700 701 if (len <= 0) 702 return; 703 704 for (i = 0; i < len / 2; i++) 705 to[i] = (from[i] << 8) | (from[i] >> 8); 706 } 707 708 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q) 709 { 710 u8 buffer_complete = 0; 711 712 /* Dual field stream */ 713 buffer_complete = ((dma_q->current_field == 2) && 714 (dma_q->lines_completed >= dma_q->lines_per_field) && 715 dma_q->field1_done); 716 717 return buffer_complete; 718 } 719 720 /* ------------------------------------------------------------------ 721 Videobuf operations 722 ------------------------------------------------------------------*/ 723 724 static int 725 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) 726 { 727 struct cx231xx_fh *fh = vq->priv_data; 728 struct cx231xx *dev = fh->dev; 729 730 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3; 731 if (0 == *count) 732 *count = CX231XX_DEF_BUF; 733 734 if (*count < CX231XX_MIN_BUF) 735 *count = CX231XX_MIN_BUF; 736 737 738 cx231xx_enable_analog_tuner(dev); 739 740 return 0; 741 } 742 743 /* This is called *without* dev->slock held; please keep it that way */ 744 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf) 745 { 746 struct cx231xx_fh *fh = vq->priv_data; 747 struct cx231xx *dev = fh->dev; 748 unsigned long flags = 0; 749 750 BUG_ON(in_interrupt()); 751 752 /* We used to wait for the buffer to finish here, but this didn't work 753 because, as we were keeping the state as VIDEOBUF_QUEUED, 754 videobuf_queue_cancel marked it as finished for us. 755 (Also, it could wedge forever if the hardware was misconfigured.) 756 757 This should be safe; by the time we get here, the buffer isn't 758 queued anymore. If we ever start marking the buffers as 759 VIDEOBUF_ACTIVE, it won't be, though. 760 */ 761 spin_lock_irqsave(&dev->video_mode.slock, flags); 762 if (dev->USE_ISO) { 763 if (dev->video_mode.isoc_ctl.buf == buf) 764 dev->video_mode.isoc_ctl.buf = NULL; 765 } else { 766 if (dev->video_mode.bulk_ctl.buf == buf) 767 dev->video_mode.bulk_ctl.buf = NULL; 768 } 769 spin_unlock_irqrestore(&dev->video_mode.slock, flags); 770 771 videobuf_vmalloc_free(&buf->vb); 772 buf->vb.state = VIDEOBUF_NEEDS_INIT; 773 } 774 775 static int 776 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, 777 enum v4l2_field field) 778 { 779 struct cx231xx_fh *fh = vq->priv_data; 780 struct cx231xx_buffer *buf = 781 container_of(vb, struct cx231xx_buffer, vb); 782 struct cx231xx *dev = fh->dev; 783 int rc = 0, urb_init = 0; 784 785 /* The only currently supported format is 16 bits/pixel */ 786 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth 787 + 7) >> 3; 788 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) 789 return -EINVAL; 790 791 buf->vb.width = dev->width; 792 buf->vb.height = dev->height; 793 buf->vb.field = field; 794 795 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { 796 rc = videobuf_iolock(vq, &buf->vb, NULL); 797 if (rc < 0) 798 goto fail; 799 } 800 801 if (dev->USE_ISO) { 802 if (!dev->video_mode.isoc_ctl.num_bufs) 803 urb_init = 1; 804 } else { 805 if (!dev->video_mode.bulk_ctl.num_bufs) 806 urb_init = 1; 807 } 808 dev_dbg(dev->dev, 809 "urb_init=%d dev->video_mode.max_pkt_size=%d\n", 810 urb_init, dev->video_mode.max_pkt_size); 811 if (urb_init) { 812 dev->mode_tv = 0; 813 if (dev->USE_ISO) 814 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS, 815 CX231XX_NUM_BUFS, 816 dev->video_mode.max_pkt_size, 817 cx231xx_isoc_copy); 818 else 819 rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS, 820 CX231XX_NUM_BUFS, 821 dev->video_mode.max_pkt_size, 822 cx231xx_bulk_copy); 823 if (rc < 0) 824 goto fail; 825 } 826 827 buf->vb.state = VIDEOBUF_PREPARED; 828 829 return 0; 830 831 fail: 832 free_buffer(vq, buf); 833 return rc; 834 } 835 836 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) 837 { 838 struct cx231xx_buffer *buf = 839 container_of(vb, struct cx231xx_buffer, vb); 840 struct cx231xx_fh *fh = vq->priv_data; 841 struct cx231xx *dev = fh->dev; 842 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq; 843 844 buf->vb.state = VIDEOBUF_QUEUED; 845 list_add_tail(&buf->vb.queue, &vidq->active); 846 847 } 848 849 static void buffer_release(struct videobuf_queue *vq, 850 struct videobuf_buffer *vb) 851 { 852 struct cx231xx_buffer *buf = 853 container_of(vb, struct cx231xx_buffer, vb); 854 struct cx231xx_fh *fh = vq->priv_data; 855 struct cx231xx *dev = (struct cx231xx *)fh->dev; 856 857 cx231xx_isocdbg("cx231xx: called buffer_release\n"); 858 859 free_buffer(vq, buf); 860 } 861 862 static const struct videobuf_queue_ops cx231xx_video_qops = { 863 .buf_setup = buffer_setup, 864 .buf_prepare = buffer_prepare, 865 .buf_queue = buffer_queue, 866 .buf_release = buffer_release, 867 }; 868 869 /********************* v4l2 interface **************************************/ 870 871 void video_mux(struct cx231xx *dev, int index) 872 { 873 dev->video_input = index; 874 dev->ctl_ainput = INPUT(index)->amux; 875 876 cx231xx_set_video_input_mux(dev, index); 877 878 cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0); 879 880 cx231xx_set_audio_input(dev, dev->ctl_ainput); 881 882 dev_dbg(dev->dev, "video_mux : %d\n", index); 883 884 /* do mode control overrides if required */ 885 cx231xx_do_mode_ctrl_overrides(dev); 886 } 887 888 /* Usage lock check functions */ 889 static int res_get(struct cx231xx_fh *fh) 890 { 891 struct cx231xx *dev = fh->dev; 892 int rc = 0; 893 894 /* This instance already has stream_on */ 895 if (fh->stream_on) 896 return rc; 897 898 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { 899 if (dev->stream_on) 900 return -EBUSY; 901 dev->stream_on = 1; 902 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { 903 if (dev->vbi_stream_on) 904 return -EBUSY; 905 dev->vbi_stream_on = 1; 906 } else 907 return -EINVAL; 908 909 fh->stream_on = 1; 910 911 return rc; 912 } 913 914 static int res_check(struct cx231xx_fh *fh) 915 { 916 return fh->stream_on; 917 } 918 919 static void res_free(struct cx231xx_fh *fh) 920 { 921 struct cx231xx *dev = fh->dev; 922 923 fh->stream_on = 0; 924 925 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 926 dev->stream_on = 0; 927 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) 928 dev->vbi_stream_on = 0; 929 } 930 931 static int check_dev(struct cx231xx *dev) 932 { 933 if (dev->state & DEV_DISCONNECTED) { 934 dev_err(dev->dev, "v4l2 ioctl: device not present\n"); 935 return -ENODEV; 936 } 937 return 0; 938 } 939 940 /* ------------------------------------------------------------------ 941 IOCTL vidioc handling 942 ------------------------------------------------------------------*/ 943 944 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 945 struct v4l2_format *f) 946 { 947 struct cx231xx_fh *fh = priv; 948 struct cx231xx *dev = fh->dev; 949 950 f->fmt.pix.width = dev->width; 951 f->fmt.pix.height = dev->height; 952 f->fmt.pix.pixelformat = dev->format->fourcc; 953 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; 954 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; 955 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 956 957 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 958 959 return 0; 960 } 961 962 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc) 963 { 964 unsigned int i; 965 966 for (i = 0; i < ARRAY_SIZE(format); i++) 967 if (format[i].fourcc == fourcc) 968 return &format[i]; 969 970 return NULL; 971 } 972 973 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 974 struct v4l2_format *f) 975 { 976 struct cx231xx_fh *fh = priv; 977 struct cx231xx *dev = fh->dev; 978 unsigned int width = f->fmt.pix.width; 979 unsigned int height = f->fmt.pix.height; 980 unsigned int maxw = norm_maxw(dev); 981 unsigned int maxh = norm_maxh(dev); 982 struct cx231xx_fmt *fmt; 983 984 fmt = format_by_fourcc(f->fmt.pix.pixelformat); 985 if (!fmt) { 986 cx231xx_videodbg("Fourcc format (%08x) invalid.\n", 987 f->fmt.pix.pixelformat); 988 return -EINVAL; 989 } 990 991 /* width must even because of the YUYV format 992 height must be even because of interlacing */ 993 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0); 994 995 f->fmt.pix.width = width; 996 f->fmt.pix.height = height; 997 f->fmt.pix.pixelformat = fmt->fourcc; 998 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3; 999 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; 1000 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1001 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 1002 1003 return 0; 1004 } 1005 1006 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 1007 struct v4l2_format *f) 1008 { 1009 struct cx231xx_fh *fh = priv; 1010 struct cx231xx *dev = fh->dev; 1011 int rc; 1012 struct cx231xx_fmt *fmt; 1013 struct v4l2_subdev_format format = { 1014 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 1015 }; 1016 1017 rc = check_dev(dev); 1018 if (rc < 0) 1019 return rc; 1020 1021 vidioc_try_fmt_vid_cap(file, priv, f); 1022 1023 fmt = format_by_fourcc(f->fmt.pix.pixelformat); 1024 if (!fmt) 1025 return -EINVAL; 1026 1027 if (videobuf_queue_is_busy(&fh->vb_vidq)) { 1028 dev_err(dev->dev, "%s: queue busy\n", __func__); 1029 return -EBUSY; 1030 } 1031 1032 if (dev->stream_on && !fh->stream_on) { 1033 dev_err(dev->dev, 1034 "%s: device in use by another fh\n", __func__); 1035 return -EBUSY; 1036 } 1037 1038 /* set new image size */ 1039 dev->width = f->fmt.pix.width; 1040 dev->height = f->fmt.pix.height; 1041 dev->format = fmt; 1042 1043 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED); 1044 call_all(dev, pad, set_fmt, NULL, &format); 1045 v4l2_fill_pix_format(&f->fmt.pix, &format.format); 1046 1047 return rc; 1048 } 1049 1050 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) 1051 { 1052 struct cx231xx_fh *fh = priv; 1053 struct cx231xx *dev = fh->dev; 1054 1055 *id = dev->norm; 1056 return 0; 1057 } 1058 1059 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) 1060 { 1061 struct cx231xx_fh *fh = priv; 1062 struct cx231xx *dev = fh->dev; 1063 struct v4l2_subdev_format format = { 1064 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 1065 }; 1066 int rc; 1067 1068 rc = check_dev(dev); 1069 if (rc < 0) 1070 return rc; 1071 1072 if (dev->norm == norm) 1073 return 0; 1074 1075 if (videobuf_queue_is_busy(&fh->vb_vidq)) 1076 return -EBUSY; 1077 1078 dev->norm = norm; 1079 1080 /* Adjusts width/height, if needed */ 1081 dev->width = 720; 1082 dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480; 1083 1084 call_all(dev, video, s_std, dev->norm); 1085 1086 /* We need to reset basic properties in the decoder related to 1087 resolution (since a standard change effects things like the number 1088 of lines in VACT, etc) */ 1089 format.format.code = MEDIA_BUS_FMT_FIXED; 1090 format.format.width = dev->width; 1091 format.format.height = dev->height; 1092 call_all(dev, pad, set_fmt, NULL, &format); 1093 1094 /* do mode control overrides */ 1095 cx231xx_do_mode_ctrl_overrides(dev); 1096 1097 return 0; 1098 } 1099 1100 static const char *iname[] = { 1101 [CX231XX_VMUX_COMPOSITE1] = "Composite1", 1102 [CX231XX_VMUX_SVIDEO] = "S-Video", 1103 [CX231XX_VMUX_TELEVISION] = "Television", 1104 [CX231XX_VMUX_CABLE] = "Cable TV", 1105 [CX231XX_VMUX_DVB] = "DVB", 1106 }; 1107 1108 void cx231xx_v4l2_create_entities(struct cx231xx *dev) 1109 { 1110 #if defined(CONFIG_MEDIA_CONTROLLER) 1111 int ret, i; 1112 1113 /* Create entities for each input connector */ 1114 for (i = 0; i < MAX_CX231XX_INPUT; i++) { 1115 struct media_entity *ent = &dev->input_ent[i]; 1116 1117 if (!INPUT(i)->type) 1118 break; 1119 1120 ent->name = iname[INPUT(i)->type]; 1121 ent->flags = MEDIA_ENT_FL_CONNECTOR; 1122 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE; 1123 1124 switch (INPUT(i)->type) { 1125 case CX231XX_VMUX_COMPOSITE1: 1126 ent->function = MEDIA_ENT_F_CONN_COMPOSITE; 1127 break; 1128 case CX231XX_VMUX_SVIDEO: 1129 ent->function = MEDIA_ENT_F_CONN_SVIDEO; 1130 break; 1131 case CX231XX_VMUX_TELEVISION: 1132 case CX231XX_VMUX_CABLE: 1133 case CX231XX_VMUX_DVB: 1134 /* The DVB core will handle it */ 1135 if (dev->tuner_type == TUNER_ABSENT) 1136 continue; 1137 /* fall through */ 1138 default: /* just to shut up a gcc warning */ 1139 ent->function = MEDIA_ENT_F_CONN_RF; 1140 break; 1141 } 1142 1143 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]); 1144 if (ret < 0) 1145 pr_err("failed to initialize input pad[%d]!\n", i); 1146 1147 ret = media_device_register_entity(dev->media_dev, ent); 1148 if (ret < 0) 1149 pr_err("failed to register input entity %d!\n", i); 1150 } 1151 #endif 1152 } 1153 1154 int cx231xx_enum_input(struct file *file, void *priv, 1155 struct v4l2_input *i) 1156 { 1157 struct cx231xx_fh *fh = priv; 1158 struct cx231xx *dev = fh->dev; 1159 u32 gen_stat; 1160 unsigned int n; 1161 int ret; 1162 1163 n = i->index; 1164 if (n >= MAX_CX231XX_INPUT) 1165 return -EINVAL; 1166 if (0 == INPUT(n)->type) 1167 return -EINVAL; 1168 1169 i->index = n; 1170 i->type = V4L2_INPUT_TYPE_CAMERA; 1171 1172 strcpy(i->name, iname[INPUT(n)->type]); 1173 1174 if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) || 1175 (CX231XX_VMUX_CABLE == INPUT(n)->type)) 1176 i->type = V4L2_INPUT_TYPE_TUNER; 1177 1178 i->std = dev->vdev.tvnorms; 1179 1180 /* If they are asking about the active input, read signal status */ 1181 if (n == dev->video_input) { 1182 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1183 GEN_STAT, 2, &gen_stat, 4); 1184 if (ret > 0) { 1185 if ((gen_stat & FLD_VPRES) == 0x00) 1186 i->status |= V4L2_IN_ST_NO_SIGNAL; 1187 if ((gen_stat & FLD_HLOCK) == 0x00) 1188 i->status |= V4L2_IN_ST_NO_H_LOCK; 1189 } 1190 } 1191 1192 return 0; 1193 } 1194 1195 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i) 1196 { 1197 struct cx231xx_fh *fh = priv; 1198 struct cx231xx *dev = fh->dev; 1199 1200 *i = dev->video_input; 1201 1202 return 0; 1203 } 1204 1205 int cx231xx_s_input(struct file *file, void *priv, unsigned int i) 1206 { 1207 struct cx231xx_fh *fh = priv; 1208 struct cx231xx *dev = fh->dev; 1209 int rc; 1210 1211 dev->mode_tv = 0; 1212 rc = check_dev(dev); 1213 if (rc < 0) 1214 return rc; 1215 1216 if (i >= MAX_CX231XX_INPUT) 1217 return -EINVAL; 1218 if (0 == INPUT(i)->type) 1219 return -EINVAL; 1220 1221 video_mux(dev, i); 1222 1223 if (INPUT(i)->type == CX231XX_VMUX_TELEVISION || 1224 INPUT(i)->type == CX231XX_VMUX_CABLE) { 1225 /* There's a tuner, so reset the standard and put it on the 1226 last known frequency (since it was probably powered down 1227 until now */ 1228 call_all(dev, video, s_std, dev->norm); 1229 } 1230 1231 return 0; 1232 } 1233 1234 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) 1235 { 1236 struct cx231xx_fh *fh = priv; 1237 struct cx231xx *dev = fh->dev; 1238 int rc; 1239 1240 rc = check_dev(dev); 1241 if (rc < 0) 1242 return rc; 1243 1244 if (0 != t->index) 1245 return -EINVAL; 1246 1247 strcpy(t->name, "Tuner"); 1248 1249 t->type = V4L2_TUNER_ANALOG_TV; 1250 t->capability = V4L2_TUNER_CAP_NORM; 1251 t->rangehigh = 0xffffffffUL; 1252 t->signal = 0xffff; /* LOCKED */ 1253 call_all(dev, tuner, g_tuner, t); 1254 1255 return 0; 1256 } 1257 1258 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) 1259 { 1260 struct cx231xx_fh *fh = priv; 1261 struct cx231xx *dev = fh->dev; 1262 int rc; 1263 1264 rc = check_dev(dev); 1265 if (rc < 0) 1266 return rc; 1267 1268 if (0 != t->index) 1269 return -EINVAL; 1270 #if 0 1271 call_all(dev, tuner, s_tuner, t); 1272 #endif 1273 return 0; 1274 } 1275 1276 int cx231xx_g_frequency(struct file *file, void *priv, 1277 struct v4l2_frequency *f) 1278 { 1279 struct cx231xx_fh *fh = priv; 1280 struct cx231xx *dev = fh->dev; 1281 1282 if (f->tuner) 1283 return -EINVAL; 1284 1285 f->frequency = dev->ctl_freq; 1286 1287 return 0; 1288 } 1289 1290 int cx231xx_s_frequency(struct file *file, void *priv, 1291 const struct v4l2_frequency *f) 1292 { 1293 struct cx231xx_fh *fh = priv; 1294 struct cx231xx *dev = fh->dev; 1295 struct v4l2_frequency new_freq = *f; 1296 int rc; 1297 u32 if_frequency = 5400000; 1298 1299 dev_dbg(dev->dev, 1300 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n", 1301 f->frequency, f->type); 1302 1303 rc = check_dev(dev); 1304 if (rc < 0) 1305 return rc; 1306 1307 if (0 != f->tuner) 1308 return -EINVAL; 1309 1310 /* set pre channel change settings in DIF first */ 1311 rc = cx231xx_tuner_pre_channel_change(dev); 1312 1313 call_all(dev, tuner, s_frequency, f); 1314 call_all(dev, tuner, g_frequency, &new_freq); 1315 dev->ctl_freq = new_freq.frequency; 1316 1317 /* set post channel change settings in DIF first */ 1318 rc = cx231xx_tuner_post_channel_change(dev); 1319 1320 if (dev->tuner_type == TUNER_NXP_TDA18271) { 1321 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443)) 1322 if_frequency = 5400000; /*5.4MHz */ 1323 else if (dev->norm & V4L2_STD_B) 1324 if_frequency = 6000000; /*6.0MHz */ 1325 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK)) 1326 if_frequency = 6900000; /*6.9MHz */ 1327 else if (dev->norm & V4L2_STD_GH) 1328 if_frequency = 7100000; /*7.1MHz */ 1329 else if (dev->norm & V4L2_STD_PAL_I) 1330 if_frequency = 7250000; /*7.25MHz */ 1331 else if (dev->norm & V4L2_STD_SECAM_L) 1332 if_frequency = 6900000; /*6.9MHz */ 1333 else if (dev->norm & V4L2_STD_SECAM_LC) 1334 if_frequency = 1250000; /*1.25MHz */ 1335 1336 dev_dbg(dev->dev, 1337 "if_frequency is set to %d\n", if_frequency); 1338 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1); 1339 1340 update_HH_register_after_set_DIF(dev); 1341 } 1342 1343 dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency); 1344 1345 return rc; 1346 } 1347 1348 #ifdef CONFIG_VIDEO_ADV_DEBUG 1349 1350 int cx231xx_g_chip_info(struct file *file, void *fh, 1351 struct v4l2_dbg_chip_info *chip) 1352 { 1353 switch (chip->match.addr) { 1354 case 0: /* Cx231xx - internal registers */ 1355 return 0; 1356 case 1: /* AFE - read byte */ 1357 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name)); 1358 return 0; 1359 case 2: /* Video Block - read byte */ 1360 strlcpy(chip->name, "Video (byte)", sizeof(chip->name)); 1361 return 0; 1362 case 3: /* I2S block - read byte */ 1363 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name)); 1364 return 0; 1365 case 4: /* AFE - read dword */ 1366 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name)); 1367 return 0; 1368 case 5: /* Video Block - read dword */ 1369 strlcpy(chip->name, "Video (dword)", sizeof(chip->name)); 1370 return 0; 1371 case 6: /* I2S Block - read dword */ 1372 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name)); 1373 return 0; 1374 } 1375 return -EINVAL; 1376 } 1377 1378 int cx231xx_g_register(struct file *file, void *priv, 1379 struct v4l2_dbg_register *reg) 1380 { 1381 struct cx231xx_fh *fh = priv; 1382 struct cx231xx *dev = fh->dev; 1383 int ret; 1384 u8 value[4] = { 0, 0, 0, 0 }; 1385 u32 data = 0; 1386 1387 switch (reg->match.addr) { 1388 case 0: /* Cx231xx - internal registers */ 1389 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, 1390 (u16)reg->reg, value, 4); 1391 reg->val = value[0] | value[1] << 8 | 1392 value[2] << 16 | value[3] << 24; 1393 reg->size = 4; 1394 break; 1395 case 1: /* AFE - read byte */ 1396 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, 1397 (u16)reg->reg, 2, &data, 1); 1398 reg->val = data; 1399 reg->size = 1; 1400 break; 1401 case 2: /* Video Block - read byte */ 1402 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1403 (u16)reg->reg, 2, &data, 1); 1404 reg->val = data; 1405 reg->size = 1; 1406 break; 1407 case 3: /* I2S block - read byte */ 1408 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1409 (u16)reg->reg, 1, &data, 1); 1410 reg->val = data; 1411 reg->size = 1; 1412 break; 1413 case 4: /* AFE - read dword */ 1414 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, 1415 (u16)reg->reg, 2, &data, 4); 1416 reg->val = data; 1417 reg->size = 4; 1418 break; 1419 case 5: /* Video Block - read dword */ 1420 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1421 (u16)reg->reg, 2, &data, 4); 1422 reg->val = data; 1423 reg->size = 4; 1424 break; 1425 case 6: /* I2S Block - read dword */ 1426 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1427 (u16)reg->reg, 1, &data, 4); 1428 reg->val = data; 1429 reg->size = 4; 1430 break; 1431 default: 1432 return -EINVAL; 1433 } 1434 return ret < 0 ? ret : 0; 1435 } 1436 1437 int cx231xx_s_register(struct file *file, void *priv, 1438 const struct v4l2_dbg_register *reg) 1439 { 1440 struct cx231xx_fh *fh = priv; 1441 struct cx231xx *dev = fh->dev; 1442 int ret; 1443 u8 data[4] = { 0, 0, 0, 0 }; 1444 1445 switch (reg->match.addr) { 1446 case 0: /* cx231xx internal registers */ 1447 data[0] = (u8) reg->val; 1448 data[1] = (u8) (reg->val >> 8); 1449 data[2] = (u8) (reg->val >> 16); 1450 data[3] = (u8) (reg->val >> 24); 1451 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, 1452 (u16)reg->reg, data, 4); 1453 break; 1454 case 1: /* AFE - write byte */ 1455 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, 1456 (u16)reg->reg, 2, reg->val, 1); 1457 break; 1458 case 2: /* Video Block - write byte */ 1459 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1460 (u16)reg->reg, 2, reg->val, 1); 1461 break; 1462 case 3: /* I2S block - write byte */ 1463 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1464 (u16)reg->reg, 1, reg->val, 1); 1465 break; 1466 case 4: /* AFE - write dword */ 1467 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, 1468 (u16)reg->reg, 2, reg->val, 4); 1469 break; 1470 case 5: /* Video Block - write dword */ 1471 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1472 (u16)reg->reg, 2, reg->val, 4); 1473 break; 1474 case 6: /* I2S block - write dword */ 1475 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1476 (u16)reg->reg, 1, reg->val, 4); 1477 break; 1478 default: 1479 return -EINVAL; 1480 } 1481 return ret < 0 ? ret : 0; 1482 } 1483 #endif 1484 1485 static int vidioc_cropcap(struct file *file, void *priv, 1486 struct v4l2_cropcap *cc) 1487 { 1488 struct cx231xx_fh *fh = priv; 1489 struct cx231xx *dev = fh->dev; 1490 bool is_50hz = dev->norm & V4L2_STD_625_50; 1491 1492 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 1493 return -EINVAL; 1494 1495 cc->bounds.left = 0; 1496 cc->bounds.top = 0; 1497 cc->bounds.width = dev->width; 1498 cc->bounds.height = dev->height; 1499 cc->defrect = cc->bounds; 1500 cc->pixelaspect.numerator = is_50hz ? 54 : 11; 1501 cc->pixelaspect.denominator = is_50hz ? 59 : 10; 1502 1503 return 0; 1504 } 1505 1506 static int vidioc_streamon(struct file *file, void *priv, 1507 enum v4l2_buf_type type) 1508 { 1509 struct cx231xx_fh *fh = priv; 1510 struct cx231xx *dev = fh->dev; 1511 int rc; 1512 1513 rc = check_dev(dev); 1514 if (rc < 0) 1515 return rc; 1516 1517 rc = res_get(fh); 1518 1519 if (likely(rc >= 0)) 1520 rc = videobuf_streamon(&fh->vb_vidq); 1521 1522 call_all(dev, video, s_stream, 1); 1523 1524 return rc; 1525 } 1526 1527 static int vidioc_streamoff(struct file *file, void *priv, 1528 enum v4l2_buf_type type) 1529 { 1530 struct cx231xx_fh *fh = priv; 1531 struct cx231xx *dev = fh->dev; 1532 int rc; 1533 1534 rc = check_dev(dev); 1535 if (rc < 0) 1536 return rc; 1537 1538 if (type != fh->type) 1539 return -EINVAL; 1540 1541 cx25840_call(dev, video, s_stream, 0); 1542 1543 videobuf_streamoff(&fh->vb_vidq); 1544 res_free(fh); 1545 1546 return 0; 1547 } 1548 1549 int cx231xx_querycap(struct file *file, void *priv, 1550 struct v4l2_capability *cap) 1551 { 1552 struct video_device *vdev = video_devdata(file); 1553 struct cx231xx_fh *fh = priv; 1554 struct cx231xx *dev = fh->dev; 1555 1556 strlcpy(cap->driver, "cx231xx", sizeof(cap->driver)); 1557 strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card)); 1558 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 1559 1560 if (vdev->vfl_type == VFL_TYPE_RADIO) 1561 cap->device_caps = V4L2_CAP_RADIO; 1562 else { 1563 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; 1564 if (vdev->vfl_type == VFL_TYPE_VBI) 1565 cap->device_caps |= V4L2_CAP_VBI_CAPTURE; 1566 else 1567 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE; 1568 } 1569 if (dev->tuner_type != TUNER_ABSENT) 1570 cap->device_caps |= V4L2_CAP_TUNER; 1571 cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE | 1572 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE | 1573 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS; 1574 if (video_is_registered(&dev->radio_dev)) 1575 cap->capabilities |= V4L2_CAP_RADIO; 1576 1577 return 0; 1578 } 1579 1580 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 1581 struct v4l2_fmtdesc *f) 1582 { 1583 if (unlikely(f->index >= ARRAY_SIZE(format))) 1584 return -EINVAL; 1585 1586 strlcpy(f->description, format[f->index].name, sizeof(f->description)); 1587 f->pixelformat = format[f->index].fourcc; 1588 1589 return 0; 1590 } 1591 1592 /* RAW VBI ioctls */ 1593 1594 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, 1595 struct v4l2_format *f) 1596 { 1597 struct cx231xx_fh *fh = priv; 1598 struct cx231xx *dev = fh->dev; 1599 1600 f->fmt.vbi.sampling_rate = 6750000 * 4; 1601 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; 1602 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; 1603 f->fmt.vbi.offset = 0; 1604 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? 1605 PAL_VBI_START_LINE : NTSC_VBI_START_LINE; 1606 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? 1607 PAL_VBI_LINES : NTSC_VBI_LINES; 1608 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? 1609 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; 1610 f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; 1611 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); 1612 1613 return 0; 1614 1615 } 1616 1617 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv, 1618 struct v4l2_format *f) 1619 { 1620 struct cx231xx_fh *fh = priv; 1621 struct cx231xx *dev = fh->dev; 1622 1623 f->fmt.vbi.sampling_rate = 6750000 * 4; 1624 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; 1625 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; 1626 f->fmt.vbi.offset = 0; 1627 f->fmt.vbi.flags = 0; 1628 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? 1629 PAL_VBI_START_LINE : NTSC_VBI_START_LINE; 1630 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? 1631 PAL_VBI_LINES : NTSC_VBI_LINES; 1632 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? 1633 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; 1634 f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; 1635 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); 1636 1637 return 0; 1638 1639 } 1640 1641 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, 1642 struct v4l2_format *f) 1643 { 1644 struct cx231xx_fh *fh = priv; 1645 struct cx231xx *dev = fh->dev; 1646 1647 if (dev->vbi_stream_on && !fh->stream_on) { 1648 dev_err(dev->dev, 1649 "%s device in use by another fh\n", __func__); 1650 return -EBUSY; 1651 } 1652 return vidioc_try_fmt_vbi_cap(file, priv, f); 1653 } 1654 1655 static int vidioc_reqbufs(struct file *file, void *priv, 1656 struct v4l2_requestbuffers *rb) 1657 { 1658 struct cx231xx_fh *fh = priv; 1659 struct cx231xx *dev = fh->dev; 1660 int rc; 1661 1662 rc = check_dev(dev); 1663 if (rc < 0) 1664 return rc; 1665 1666 return videobuf_reqbufs(&fh->vb_vidq, rb); 1667 } 1668 1669 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b) 1670 { 1671 struct cx231xx_fh *fh = priv; 1672 struct cx231xx *dev = fh->dev; 1673 int rc; 1674 1675 rc = check_dev(dev); 1676 if (rc < 0) 1677 return rc; 1678 1679 return videobuf_querybuf(&fh->vb_vidq, b); 1680 } 1681 1682 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) 1683 { 1684 struct cx231xx_fh *fh = priv; 1685 struct cx231xx *dev = fh->dev; 1686 int rc; 1687 1688 rc = check_dev(dev); 1689 if (rc < 0) 1690 return rc; 1691 1692 return videobuf_qbuf(&fh->vb_vidq, b); 1693 } 1694 1695 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) 1696 { 1697 struct cx231xx_fh *fh = priv; 1698 struct cx231xx *dev = fh->dev; 1699 int rc; 1700 1701 rc = check_dev(dev); 1702 if (rc < 0) 1703 return rc; 1704 1705 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK); 1706 } 1707 1708 /* ----------------------------------------------------------- */ 1709 /* RADIO ESPECIFIC IOCTLS */ 1710 /* ----------------------------------------------------------- */ 1711 1712 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) 1713 { 1714 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; 1715 1716 if (t->index) 1717 return -EINVAL; 1718 1719 strcpy(t->name, "Radio"); 1720 1721 call_all(dev, tuner, g_tuner, t); 1722 1723 return 0; 1724 } 1725 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) 1726 { 1727 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev; 1728 1729 if (t->index) 1730 return -EINVAL; 1731 1732 call_all(dev, tuner, s_tuner, t); 1733 1734 return 0; 1735 } 1736 1737 /* 1738 * cx231xx_v4l2_open() 1739 * inits the device and starts isoc transfer 1740 */ 1741 static int cx231xx_v4l2_open(struct file *filp) 1742 { 1743 int radio = 0; 1744 struct video_device *vdev = video_devdata(filp); 1745 struct cx231xx *dev = video_drvdata(filp); 1746 struct cx231xx_fh *fh; 1747 enum v4l2_buf_type fh_type = 0; 1748 1749 switch (vdev->vfl_type) { 1750 case VFL_TYPE_GRABBER: 1751 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1752 break; 1753 case VFL_TYPE_VBI: 1754 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; 1755 break; 1756 case VFL_TYPE_RADIO: 1757 radio = 1; 1758 break; 1759 default: 1760 return -EINVAL; 1761 } 1762 1763 cx231xx_videodbg("open dev=%s type=%s users=%d\n", 1764 video_device_node_name(vdev), v4l2_type_names[fh_type], 1765 dev->users); 1766 1767 #if 0 1768 errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); 1769 if (errCode < 0) { 1770 dev_err(dev->dev, 1771 "Device locked on digital mode. Can't open analog\n"); 1772 return -EBUSY; 1773 } 1774 #endif 1775 1776 fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL); 1777 if (!fh) 1778 return -ENOMEM; 1779 if (mutex_lock_interruptible(&dev->lock)) { 1780 kfree(fh); 1781 return -ERESTARTSYS; 1782 } 1783 fh->dev = dev; 1784 fh->type = fh_type; 1785 filp->private_data = fh; 1786 v4l2_fh_init(&fh->fh, vdev); 1787 1788 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { 1789 /* Power up in Analog TV mode */ 1790 if (dev->board.external_av) 1791 cx231xx_set_power_mode(dev, 1792 POLARIS_AVMODE_ENXTERNAL_AV); 1793 else 1794 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV); 1795 1796 #if 0 1797 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); 1798 #endif 1799 1800 /* set video alternate setting */ 1801 cx231xx_set_video_alternate(dev); 1802 1803 /* Needed, since GPIO might have disabled power of 1804 some i2c device */ 1805 cx231xx_config_i2c(dev); 1806 1807 /* device needs to be initialized before isoc transfer */ 1808 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input; 1809 1810 } 1811 if (radio) { 1812 cx231xx_videodbg("video_open: setting radio device\n"); 1813 1814 /* cx231xx_start_radio(dev); */ 1815 1816 call_all(dev, tuner, s_radio); 1817 } 1818 1819 dev->users++; 1820 1821 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 1822 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops, 1823 NULL, &dev->video_mode.slock, 1824 fh->type, V4L2_FIELD_INTERLACED, 1825 sizeof(struct cx231xx_buffer), 1826 fh, &dev->lock); 1827 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { 1828 /* Set the required alternate setting VBI interface works in 1829 Bulk mode only */ 1830 cx231xx_set_alt_setting(dev, INDEX_VANC, 0); 1831 1832 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops, 1833 NULL, &dev->vbi_mode.slock, 1834 fh->type, V4L2_FIELD_SEQ_TB, 1835 sizeof(struct cx231xx_buffer), 1836 fh, &dev->lock); 1837 } 1838 mutex_unlock(&dev->lock); 1839 v4l2_fh_add(&fh->fh); 1840 1841 return 0; 1842 } 1843 1844 /* 1845 * cx231xx_realease_resources() 1846 * unregisters the v4l2,i2c and usb devices 1847 * called when the device gets disconected or at module unload 1848 */ 1849 void cx231xx_release_analog_resources(struct cx231xx *dev) 1850 { 1851 1852 /*FIXME: I2C IR should be disconnected */ 1853 1854 if (video_is_registered(&dev->radio_dev)) 1855 video_unregister_device(&dev->radio_dev); 1856 if (video_is_registered(&dev->vbi_dev)) { 1857 dev_info(dev->dev, "V4L2 device %s deregistered\n", 1858 video_device_node_name(&dev->vbi_dev)); 1859 video_unregister_device(&dev->vbi_dev); 1860 } 1861 if (video_is_registered(&dev->vdev)) { 1862 dev_info(dev->dev, "V4L2 device %s deregistered\n", 1863 video_device_node_name(&dev->vdev)); 1864 1865 if (dev->board.has_417) 1866 cx231xx_417_unregister(dev); 1867 1868 video_unregister_device(&dev->vdev); 1869 } 1870 v4l2_ctrl_handler_free(&dev->ctrl_handler); 1871 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler); 1872 } 1873 1874 /* 1875 * cx231xx_close() 1876 * stops streaming and deallocates all resources allocated by the v4l2 1877 * calls and ioctls 1878 */ 1879 static int cx231xx_close(struct file *filp) 1880 { 1881 struct cx231xx_fh *fh = filp->private_data; 1882 struct cx231xx *dev = fh->dev; 1883 1884 cx231xx_videodbg("users=%d\n", dev->users); 1885 1886 cx231xx_videodbg("users=%d\n", dev->users); 1887 if (res_check(fh)) 1888 res_free(fh); 1889 1890 /* 1891 * To workaround error number=-71 on EP0 for VideoGrabber, 1892 * need exclude following. 1893 * FIXME: It is probably safe to remove most of these, as we're 1894 * now avoiding the alternate setting for INDEX_VANC 1895 */ 1896 if (!dev->board.no_alt_vanc) 1897 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { 1898 videobuf_stop(&fh->vb_vidq); 1899 videobuf_mmap_free(&fh->vb_vidq); 1900 1901 /* the device is already disconnect, 1902 free the remaining resources */ 1903 if (dev->state & DEV_DISCONNECTED) { 1904 if (atomic_read(&dev->devlist_count) > 0) { 1905 cx231xx_release_resources(dev); 1906 fh->dev = NULL; 1907 return 0; 1908 } 1909 return 0; 1910 } 1911 1912 /* do this before setting alternate! */ 1913 cx231xx_uninit_vbi_isoc(dev); 1914 1915 /* set alternate 0 */ 1916 if (!dev->vbi_or_sliced_cc_mode) 1917 cx231xx_set_alt_setting(dev, INDEX_VANC, 0); 1918 else 1919 cx231xx_set_alt_setting(dev, INDEX_HANC, 0); 1920 1921 v4l2_fh_del(&fh->fh); 1922 v4l2_fh_exit(&fh->fh); 1923 kfree(fh); 1924 dev->users--; 1925 wake_up_interruptible(&dev->open); 1926 return 0; 1927 } 1928 1929 v4l2_fh_del(&fh->fh); 1930 dev->users--; 1931 if (!dev->users) { 1932 videobuf_stop(&fh->vb_vidq); 1933 videobuf_mmap_free(&fh->vb_vidq); 1934 1935 /* the device is already disconnect, 1936 free the remaining resources */ 1937 if (dev->state & DEV_DISCONNECTED) { 1938 cx231xx_release_resources(dev); 1939 fh->dev = NULL; 1940 return 0; 1941 } 1942 1943 /* Save some power by putting tuner to sleep */ 1944 call_all(dev, tuner, standby); 1945 1946 /* do this before setting alternate! */ 1947 if (dev->USE_ISO) 1948 cx231xx_uninit_isoc(dev); 1949 else 1950 cx231xx_uninit_bulk(dev); 1951 cx231xx_set_mode(dev, CX231XX_SUSPEND); 1952 1953 /* set alternate 0 */ 1954 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0); 1955 } 1956 v4l2_fh_exit(&fh->fh); 1957 kfree(fh); 1958 wake_up_interruptible(&dev->open); 1959 return 0; 1960 } 1961 1962 static int cx231xx_v4l2_close(struct file *filp) 1963 { 1964 struct cx231xx_fh *fh = filp->private_data; 1965 struct cx231xx *dev = fh->dev; 1966 int rc; 1967 1968 mutex_lock(&dev->lock); 1969 rc = cx231xx_close(filp); 1970 mutex_unlock(&dev->lock); 1971 return rc; 1972 } 1973 1974 /* 1975 * cx231xx_v4l2_read() 1976 * will allocate buffers when called for the first time 1977 */ 1978 static ssize_t 1979 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count, 1980 loff_t *pos) 1981 { 1982 struct cx231xx_fh *fh = filp->private_data; 1983 struct cx231xx *dev = fh->dev; 1984 int rc; 1985 1986 rc = check_dev(dev); 1987 if (rc < 0) 1988 return rc; 1989 1990 if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) || 1991 (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) { 1992 rc = res_get(fh); 1993 1994 if (unlikely(rc < 0)) 1995 return rc; 1996 1997 if (mutex_lock_interruptible(&dev->lock)) 1998 return -ERESTARTSYS; 1999 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, 2000 filp->f_flags & O_NONBLOCK); 2001 mutex_unlock(&dev->lock); 2002 return rc; 2003 } 2004 return 0; 2005 } 2006 2007 /* 2008 * cx231xx_v4l2_poll() 2009 * will allocate buffers when called for the first time 2010 */ 2011 static __poll_t cx231xx_v4l2_poll(struct file *filp, poll_table *wait) 2012 { 2013 __poll_t req_events = poll_requested_events(wait); 2014 struct cx231xx_fh *fh = filp->private_data; 2015 struct cx231xx *dev = fh->dev; 2016 __poll_t res = 0; 2017 int rc; 2018 2019 rc = check_dev(dev); 2020 if (rc < 0) 2021 return EPOLLERR; 2022 2023 rc = res_get(fh); 2024 2025 if (unlikely(rc < 0)) 2026 return EPOLLERR; 2027 2028 if (v4l2_event_pending(&fh->fh)) 2029 res |= EPOLLPRI; 2030 else 2031 poll_wait(filp, &fh->fh.wait, wait); 2032 2033 if (!(req_events & (EPOLLIN | EPOLLRDNORM))) 2034 return res; 2035 2036 if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) || 2037 (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) { 2038 mutex_lock(&dev->lock); 2039 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait); 2040 mutex_unlock(&dev->lock); 2041 return res; 2042 } 2043 return res | EPOLLERR; 2044 } 2045 2046 /* 2047 * cx231xx_v4l2_mmap() 2048 */ 2049 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) 2050 { 2051 struct cx231xx_fh *fh = filp->private_data; 2052 struct cx231xx *dev = fh->dev; 2053 int rc; 2054 2055 rc = check_dev(dev); 2056 if (rc < 0) 2057 return rc; 2058 2059 rc = res_get(fh); 2060 2061 if (unlikely(rc < 0)) 2062 return rc; 2063 2064 if (mutex_lock_interruptible(&dev->lock)) 2065 return -ERESTARTSYS; 2066 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); 2067 mutex_unlock(&dev->lock); 2068 2069 cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n", 2070 (unsigned long)vma->vm_start, 2071 (unsigned long)vma->vm_end - 2072 (unsigned long)vma->vm_start, rc); 2073 2074 return rc; 2075 } 2076 2077 static const struct v4l2_file_operations cx231xx_v4l_fops = { 2078 .owner = THIS_MODULE, 2079 .open = cx231xx_v4l2_open, 2080 .release = cx231xx_v4l2_close, 2081 .read = cx231xx_v4l2_read, 2082 .poll = cx231xx_v4l2_poll, 2083 .mmap = cx231xx_v4l2_mmap, 2084 .unlocked_ioctl = video_ioctl2, 2085 }; 2086 2087 static const struct v4l2_ioctl_ops video_ioctl_ops = { 2088 .vidioc_querycap = cx231xx_querycap, 2089 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 2090 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 2091 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, 2092 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 2093 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 2094 .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap, 2095 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, 2096 .vidioc_cropcap = vidioc_cropcap, 2097 .vidioc_reqbufs = vidioc_reqbufs, 2098 .vidioc_querybuf = vidioc_querybuf, 2099 .vidioc_qbuf = vidioc_qbuf, 2100 .vidioc_dqbuf = vidioc_dqbuf, 2101 .vidioc_s_std = vidioc_s_std, 2102 .vidioc_g_std = vidioc_g_std, 2103 .vidioc_enum_input = cx231xx_enum_input, 2104 .vidioc_g_input = cx231xx_g_input, 2105 .vidioc_s_input = cx231xx_s_input, 2106 .vidioc_streamon = vidioc_streamon, 2107 .vidioc_streamoff = vidioc_streamoff, 2108 .vidioc_g_tuner = cx231xx_g_tuner, 2109 .vidioc_s_tuner = cx231xx_s_tuner, 2110 .vidioc_g_frequency = cx231xx_g_frequency, 2111 .vidioc_s_frequency = cx231xx_s_frequency, 2112 #ifdef CONFIG_VIDEO_ADV_DEBUG 2113 .vidioc_g_chip_info = cx231xx_g_chip_info, 2114 .vidioc_g_register = cx231xx_g_register, 2115 .vidioc_s_register = cx231xx_s_register, 2116 #endif 2117 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 2118 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 2119 }; 2120 2121 static struct video_device cx231xx_vbi_template; 2122 2123 static const struct video_device cx231xx_video_template = { 2124 .fops = &cx231xx_v4l_fops, 2125 .release = video_device_release_empty, 2126 .ioctl_ops = &video_ioctl_ops, 2127 .tvnorms = V4L2_STD_ALL, 2128 }; 2129 2130 static const struct v4l2_file_operations radio_fops = { 2131 .owner = THIS_MODULE, 2132 .open = cx231xx_v4l2_open, 2133 .release = cx231xx_v4l2_close, 2134 .poll = v4l2_ctrl_poll, 2135 .unlocked_ioctl = video_ioctl2, 2136 }; 2137 2138 static const struct v4l2_ioctl_ops radio_ioctl_ops = { 2139 .vidioc_querycap = cx231xx_querycap, 2140 .vidioc_g_tuner = radio_g_tuner, 2141 .vidioc_s_tuner = radio_s_tuner, 2142 .vidioc_g_frequency = cx231xx_g_frequency, 2143 .vidioc_s_frequency = cx231xx_s_frequency, 2144 #ifdef CONFIG_VIDEO_ADV_DEBUG 2145 .vidioc_g_chip_info = cx231xx_g_chip_info, 2146 .vidioc_g_register = cx231xx_g_register, 2147 .vidioc_s_register = cx231xx_s_register, 2148 #endif 2149 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 2150 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 2151 }; 2152 2153 static struct video_device cx231xx_radio_template = { 2154 .name = "cx231xx-radio", 2155 .fops = &radio_fops, 2156 .ioctl_ops = &radio_ioctl_ops, 2157 }; 2158 2159 /******************************** usb interface ******************************/ 2160 2161 static void cx231xx_vdev_init(struct cx231xx *dev, 2162 struct video_device *vfd, 2163 const struct video_device *template, 2164 const char *type_name) 2165 { 2166 *vfd = *template; 2167 vfd->v4l2_dev = &dev->v4l2_dev; 2168 vfd->release = video_device_release_empty; 2169 vfd->lock = &dev->lock; 2170 2171 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name); 2172 2173 video_set_drvdata(vfd, dev); 2174 if (dev->tuner_type == TUNER_ABSENT) { 2175 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY); 2176 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY); 2177 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER); 2178 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER); 2179 } 2180 } 2181 2182 int cx231xx_register_analog_devices(struct cx231xx *dev) 2183 { 2184 int ret; 2185 2186 dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION); 2187 2188 /* set default norm */ 2189 dev->norm = V4L2_STD_PAL; 2190 dev->width = norm_maxw(dev); 2191 dev->height = norm_maxh(dev); 2192 dev->interlaced = 0; 2193 2194 /* Analog specific initialization */ 2195 dev->format = &format[0]; 2196 2197 /* Set the initial input */ 2198 video_mux(dev, dev->video_input); 2199 2200 call_all(dev, video, s_std, dev->norm); 2201 2202 v4l2_ctrl_handler_init(&dev->ctrl_handler, 10); 2203 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5); 2204 2205 if (dev->sd_cx25840) { 2206 v4l2_ctrl_add_handler(&dev->ctrl_handler, 2207 dev->sd_cx25840->ctrl_handler, NULL); 2208 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler, 2209 dev->sd_cx25840->ctrl_handler, 2210 v4l2_ctrl_radio_filter); 2211 } 2212 2213 if (dev->ctrl_handler.error) 2214 return dev->ctrl_handler.error; 2215 if (dev->radio_ctrl_handler.error) 2216 return dev->radio_ctrl_handler.error; 2217 2218 /* enable vbi capturing */ 2219 /* write code here... */ 2220 2221 /* allocate and fill video video_device struct */ 2222 cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video"); 2223 #if defined(CONFIG_MEDIA_CONTROLLER) 2224 dev->video_pad.flags = MEDIA_PAD_FL_SINK; 2225 ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad); 2226 if (ret < 0) 2227 dev_err(dev->dev, "failed to initialize video media entity!\n"); 2228 #endif 2229 dev->vdev.ctrl_handler = &dev->ctrl_handler; 2230 /* register v4l2 video video_device */ 2231 ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, 2232 video_nr[dev->devno]); 2233 if (ret) { 2234 dev_err(dev->dev, 2235 "unable to register video device (error=%i).\n", 2236 ret); 2237 return ret; 2238 } 2239 2240 dev_info(dev->dev, "Registered video device %s [v4l2]\n", 2241 video_device_node_name(&dev->vdev)); 2242 2243 /* Initialize VBI template */ 2244 cx231xx_vbi_template = cx231xx_video_template; 2245 strcpy(cx231xx_vbi_template.name, "cx231xx-vbi"); 2246 2247 /* Allocate and fill vbi video_device struct */ 2248 cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi"); 2249 2250 #if defined(CONFIG_MEDIA_CONTROLLER) 2251 dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; 2252 ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); 2253 if (ret < 0) 2254 dev_err(dev->dev, "failed to initialize vbi media entity!\n"); 2255 #endif 2256 dev->vbi_dev.ctrl_handler = &dev->ctrl_handler; 2257 /* register v4l2 vbi video_device */ 2258 ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, 2259 vbi_nr[dev->devno]); 2260 if (ret < 0) { 2261 dev_err(dev->dev, "unable to register vbi device\n"); 2262 return ret; 2263 } 2264 2265 dev_info(dev->dev, "Registered VBI device %s\n", 2266 video_device_node_name(&dev->vbi_dev)); 2267 2268 if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) { 2269 cx231xx_vdev_init(dev, &dev->radio_dev, 2270 &cx231xx_radio_template, "radio"); 2271 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler; 2272 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO, 2273 radio_nr[dev->devno]); 2274 if (ret < 0) { 2275 dev_err(dev->dev, 2276 "can't register radio device\n"); 2277 return ret; 2278 } 2279 dev_info(dev->dev, "Registered radio device as %s\n", 2280 video_device_node_name(&dev->radio_dev)); 2281 } 2282 2283 return 0; 2284 } 2285