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)] = -1U }; 62 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = -1U }; 63 static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = -1U }; 64 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = -1U }; 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 .fourcc = V4L2_PIX_FMT_YUYV, 84 .depth = 16, 85 .reg = 0, 86 }, 87 }; 88 89 90 static int cx231xx_enable_analog_tuner(struct cx231xx *dev) 91 { 92 #ifdef CONFIG_MEDIA_CONTROLLER 93 struct media_device *mdev = dev->media_dev; 94 struct media_entity *entity, *decoder = NULL, *source; 95 struct media_link *link, *found_link = NULL; 96 int ret, active_links = 0; 97 98 if (!mdev) 99 return 0; 100 101 /* 102 * This will find the tuner that is connected into the decoder. 103 * Technically, this is not 100% correct, as the device may be 104 * using an analog input instead of the tuner. However, as we can't 105 * do DVB streaming while the DMA engine is being used for V4L2, 106 * this should be enough for the actual needs. 107 */ 108 media_device_for_each_entity(entity, mdev) { 109 if (entity->function == MEDIA_ENT_F_ATV_DECODER) { 110 decoder = entity; 111 break; 112 } 113 } 114 if (!decoder) 115 return 0; 116 117 list_for_each_entry(link, &decoder->links, list) { 118 if (link->sink->entity == decoder) { 119 found_link = link; 120 if (link->flags & MEDIA_LNK_FL_ENABLED) 121 active_links++; 122 break; 123 } 124 } 125 126 if (active_links == 1 || !found_link) 127 return 0; 128 129 source = found_link->source->entity; 130 list_for_each_entry(link, &source->links, list) { 131 struct media_entity *sink; 132 int flags = 0; 133 134 sink = link->sink->entity; 135 136 if (sink == entity) 137 flags = MEDIA_LNK_FL_ENABLED; 138 139 ret = media_entity_setup_link(link, flags); 140 if (ret) { 141 dev_err(dev->dev, 142 "Couldn't change link %s->%s to %s. Error %d\n", 143 source->name, sink->name, 144 flags ? "enabled" : "disabled", 145 ret); 146 return ret; 147 } else 148 dev_dbg(dev->dev, 149 "link %s->%s was %s\n", 150 source->name, sink->name, 151 flags ? "ENABLED" : "disabled"); 152 } 153 #endif 154 return 0; 155 } 156 157 /* ------------------------------------------------------------------ 158 Video buffer and parser functions 159 ------------------------------------------------------------------*/ 160 161 /* 162 * Announces that a buffer were filled and request the next 163 */ 164 static inline void buffer_filled(struct cx231xx *dev, 165 struct cx231xx_dmaqueue *dma_q, 166 struct cx231xx_buffer *buf) 167 { 168 /* Advice that buffer was filled */ 169 cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.vb2_buf.index); 170 buf->vb.sequence = dma_q->sequence++; 171 buf->vb.field = V4L2_FIELD_INTERLACED; 172 buf->vb.vb2_buf.timestamp = ktime_get_ns(); 173 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, dev->size); 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->list); 181 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_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, list); 246 247 /* Cleans up buffer - Useful for testing for frame/URB loss */ 248 outp = vb2_plane_vaddr(&(*buf)->vb.vb2_buf, 0); 249 memset(outp, 0, dev->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 = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); 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 + dev->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 queue_setup(struct vb2_queue *vq, 713 unsigned int *nbuffers, unsigned int *nplanes, 714 unsigned int sizes[], struct device *alloc_devs[]) 715 { 716 struct cx231xx *dev = vb2_get_drv_priv(vq); 717 718 dev->size = (dev->width * dev->height * dev->format->depth + 7) >> 3; 719 720 if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF) 721 *nbuffers = CX231XX_MIN_BUF - vq->num_buffers; 722 723 if (*nplanes) 724 return sizes[0] < dev->size ? -EINVAL : 0; 725 *nplanes = 1; 726 sizes[0] = dev->size; 727 728 return 0; 729 } 730 731 static void buffer_queue(struct vb2_buffer *vb) 732 { 733 struct cx231xx_buffer *buf = 734 container_of(vb, struct cx231xx_buffer, vb.vb2_buf); 735 struct cx231xx *dev = vb2_get_drv_priv(vb->vb2_queue); 736 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq; 737 unsigned long flags; 738 739 spin_lock_irqsave(&dev->video_mode.slock, flags); 740 list_add_tail(&buf->list, &vidq->active); 741 spin_unlock_irqrestore(&dev->video_mode.slock, flags); 742 } 743 744 static void return_all_buffers(struct cx231xx *dev, 745 enum vb2_buffer_state state) 746 { 747 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq; 748 struct cx231xx_buffer *buf, *node; 749 unsigned long flags; 750 751 spin_lock_irqsave(&dev->video_mode.slock, flags); 752 if (dev->USE_ISO) 753 dev->video_mode.isoc_ctl.buf = NULL; 754 else 755 dev->video_mode.bulk_ctl.buf = NULL; 756 list_for_each_entry_safe(buf, node, &vidq->active, list) { 757 list_del(&buf->list); 758 vb2_buffer_done(&buf->vb.vb2_buf, state); 759 } 760 spin_unlock_irqrestore(&dev->video_mode.slock, flags); 761 } 762 763 static int start_streaming(struct vb2_queue *vq, unsigned int count) 764 { 765 struct cx231xx *dev = vb2_get_drv_priv(vq); 766 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq; 767 int ret = 0; 768 769 vidq->sequence = 0; 770 dev->mode_tv = 0; 771 772 cx231xx_enable_analog_tuner(dev); 773 if (dev->USE_ISO) 774 ret = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS, 775 CX231XX_NUM_BUFS, 776 dev->video_mode.max_pkt_size, 777 cx231xx_isoc_copy); 778 else 779 ret = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS, 780 CX231XX_NUM_BUFS, 781 dev->video_mode.max_pkt_size, 782 cx231xx_bulk_copy); 783 if (ret) 784 return_all_buffers(dev, VB2_BUF_STATE_QUEUED); 785 call_all(dev, video, s_stream, 1); 786 return ret; 787 } 788 789 static void stop_streaming(struct vb2_queue *vq) 790 { 791 struct cx231xx *dev = vb2_get_drv_priv(vq); 792 793 call_all(dev, video, s_stream, 0); 794 return_all_buffers(dev, VB2_BUF_STATE_ERROR); 795 } 796 797 static struct vb2_ops cx231xx_video_qops = { 798 .queue_setup = queue_setup, 799 .buf_queue = buffer_queue, 800 .start_streaming = start_streaming, 801 .stop_streaming = stop_streaming, 802 .wait_prepare = vb2_ops_wait_prepare, 803 .wait_finish = vb2_ops_wait_finish, 804 }; 805 806 /********************* v4l2 interface **************************************/ 807 808 void video_mux(struct cx231xx *dev, int index) 809 { 810 dev->video_input = index; 811 dev->ctl_ainput = INPUT(index)->amux; 812 813 cx231xx_set_video_input_mux(dev, index); 814 815 cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0); 816 817 cx231xx_set_audio_input(dev, dev->ctl_ainput); 818 819 dev_dbg(dev->dev, "video_mux : %d\n", index); 820 821 /* do mode control overrides if required */ 822 cx231xx_do_mode_ctrl_overrides(dev); 823 } 824 825 /* ------------------------------------------------------------------ 826 IOCTL vidioc handling 827 ------------------------------------------------------------------*/ 828 829 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 830 struct v4l2_format *f) 831 { 832 struct cx231xx *dev = video_drvdata(file); 833 834 f->fmt.pix.width = dev->width; 835 f->fmt.pix.height = dev->height; 836 f->fmt.pix.pixelformat = dev->format->fourcc; 837 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; 838 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; 839 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 840 841 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 842 843 return 0; 844 } 845 846 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc) 847 { 848 unsigned int i; 849 850 for (i = 0; i < ARRAY_SIZE(format); i++) 851 if (format[i].fourcc == fourcc) 852 return &format[i]; 853 854 return NULL; 855 } 856 857 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 858 struct v4l2_format *f) 859 { 860 struct cx231xx *dev = video_drvdata(file); 861 unsigned int width = f->fmt.pix.width; 862 unsigned int height = f->fmt.pix.height; 863 unsigned int maxw = norm_maxw(dev); 864 unsigned int maxh = norm_maxh(dev); 865 struct cx231xx_fmt *fmt; 866 867 fmt = format_by_fourcc(f->fmt.pix.pixelformat); 868 if (!fmt) { 869 cx231xx_videodbg("Fourcc format (%08x) invalid.\n", 870 f->fmt.pix.pixelformat); 871 return -EINVAL; 872 } 873 874 /* width must even because of the YUYV format 875 height must be even because of interlacing */ 876 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0); 877 878 f->fmt.pix.width = width; 879 f->fmt.pix.height = height; 880 f->fmt.pix.pixelformat = fmt->fourcc; 881 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3; 882 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; 883 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 884 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 885 886 return 0; 887 } 888 889 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 890 struct v4l2_format *f) 891 { 892 struct cx231xx *dev = video_drvdata(file); 893 struct v4l2_subdev_format format = { 894 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 895 }; 896 int rc; 897 898 rc = vidioc_try_fmt_vid_cap(file, priv, f); 899 if (rc) 900 return rc; 901 902 if (vb2_is_busy(&dev->vidq)) { 903 dev_err(dev->dev, "%s: queue busy\n", __func__); 904 return -EBUSY; 905 } 906 907 /* set new image size */ 908 dev->width = f->fmt.pix.width; 909 dev->height = f->fmt.pix.height; 910 dev->format = format_by_fourcc(f->fmt.pix.pixelformat); 911 912 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED); 913 call_all(dev, pad, set_fmt, NULL, &format); 914 v4l2_fill_pix_format(&f->fmt.pix, &format.format); 915 916 return rc; 917 } 918 919 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) 920 { 921 struct cx231xx *dev = video_drvdata(file); 922 923 *id = dev->norm; 924 return 0; 925 } 926 927 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) 928 { 929 struct cx231xx *dev = video_drvdata(file); 930 struct v4l2_subdev_format format = { 931 .which = V4L2_SUBDEV_FORMAT_ACTIVE, 932 }; 933 934 if (dev->norm == norm) 935 return 0; 936 937 if (vb2_is_busy(&dev->vidq)) 938 return -EBUSY; 939 940 dev->norm = norm; 941 942 /* Adjusts width/height, if needed */ 943 dev->width = 720; 944 dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480; 945 946 call_all(dev, video, s_std, dev->norm); 947 948 /* We need to reset basic properties in the decoder related to 949 resolution (since a standard change effects things like the number 950 of lines in VACT, etc) */ 951 format.format.code = MEDIA_BUS_FMT_FIXED; 952 format.format.width = dev->width; 953 format.format.height = dev->height; 954 call_all(dev, pad, set_fmt, NULL, &format); 955 956 /* do mode control overrides */ 957 cx231xx_do_mode_ctrl_overrides(dev); 958 959 return 0; 960 } 961 962 static const char *iname[] = { 963 [CX231XX_VMUX_COMPOSITE1] = "Composite1", 964 [CX231XX_VMUX_SVIDEO] = "S-Video", 965 [CX231XX_VMUX_TELEVISION] = "Television", 966 [CX231XX_VMUX_CABLE] = "Cable TV", 967 [CX231XX_VMUX_DVB] = "DVB", 968 }; 969 970 void cx231xx_v4l2_create_entities(struct cx231xx *dev) 971 { 972 #if defined(CONFIG_MEDIA_CONTROLLER) 973 int ret, i; 974 975 /* Create entities for each input connector */ 976 for (i = 0; i < MAX_CX231XX_INPUT; i++) { 977 struct media_entity *ent = &dev->input_ent[i]; 978 979 if (!INPUT(i)->type) 980 break; 981 982 ent->name = iname[INPUT(i)->type]; 983 ent->flags = MEDIA_ENT_FL_CONNECTOR; 984 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE; 985 986 switch (INPUT(i)->type) { 987 case CX231XX_VMUX_COMPOSITE1: 988 ent->function = MEDIA_ENT_F_CONN_COMPOSITE; 989 break; 990 case CX231XX_VMUX_SVIDEO: 991 ent->function = MEDIA_ENT_F_CONN_SVIDEO; 992 break; 993 case CX231XX_VMUX_TELEVISION: 994 case CX231XX_VMUX_CABLE: 995 case CX231XX_VMUX_DVB: 996 /* The DVB core will handle it */ 997 if (dev->tuner_type == TUNER_ABSENT) 998 continue; 999 /* fall through */ 1000 default: /* just to shut up a gcc warning */ 1001 ent->function = MEDIA_ENT_F_CONN_RF; 1002 break; 1003 } 1004 1005 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]); 1006 if (ret < 0) 1007 pr_err("failed to initialize input pad[%d]!\n", i); 1008 1009 ret = media_device_register_entity(dev->media_dev, ent); 1010 if (ret < 0) 1011 pr_err("failed to register input entity %d!\n", i); 1012 } 1013 #endif 1014 } 1015 1016 int cx231xx_enum_input(struct file *file, void *priv, 1017 struct v4l2_input *i) 1018 { 1019 struct cx231xx *dev = video_drvdata(file); 1020 u32 gen_stat; 1021 unsigned int n; 1022 int ret; 1023 1024 n = i->index; 1025 if (n >= MAX_CX231XX_INPUT) 1026 return -EINVAL; 1027 if (0 == INPUT(n)->type) 1028 return -EINVAL; 1029 1030 i->index = n; 1031 i->type = V4L2_INPUT_TYPE_CAMERA; 1032 1033 strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name)); 1034 1035 if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) || 1036 (CX231XX_VMUX_CABLE == INPUT(n)->type)) 1037 i->type = V4L2_INPUT_TYPE_TUNER; 1038 1039 i->std = dev->vdev.tvnorms; 1040 1041 /* If they are asking about the active input, read signal status */ 1042 if (n == dev->video_input) { 1043 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1044 GEN_STAT, 2, &gen_stat, 4); 1045 if (ret > 0) { 1046 if ((gen_stat & FLD_VPRES) == 0x00) 1047 i->status |= V4L2_IN_ST_NO_SIGNAL; 1048 if ((gen_stat & FLD_HLOCK) == 0x00) 1049 i->status |= V4L2_IN_ST_NO_H_LOCK; 1050 } 1051 } 1052 1053 return 0; 1054 } 1055 1056 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i) 1057 { 1058 struct cx231xx *dev = video_drvdata(file); 1059 1060 *i = dev->video_input; 1061 1062 return 0; 1063 } 1064 1065 int cx231xx_s_input(struct file *file, void *priv, unsigned int i) 1066 { 1067 struct cx231xx *dev = video_drvdata(file); 1068 1069 dev->mode_tv = 0; 1070 1071 if (i >= MAX_CX231XX_INPUT) 1072 return -EINVAL; 1073 if (0 == INPUT(i)->type) 1074 return -EINVAL; 1075 1076 video_mux(dev, i); 1077 1078 if (INPUT(i)->type == CX231XX_VMUX_TELEVISION || 1079 INPUT(i)->type == CX231XX_VMUX_CABLE) { 1080 /* There's a tuner, so reset the standard and put it on the 1081 last known frequency (since it was probably powered down 1082 until now */ 1083 call_all(dev, video, s_std, dev->norm); 1084 } 1085 1086 return 0; 1087 } 1088 1089 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) 1090 { 1091 struct cx231xx *dev = video_drvdata(file); 1092 1093 if (0 != t->index) 1094 return -EINVAL; 1095 1096 strscpy(t->name, "Tuner", sizeof(t->name)); 1097 1098 t->type = V4L2_TUNER_ANALOG_TV; 1099 t->capability = V4L2_TUNER_CAP_NORM; 1100 t->rangehigh = 0xffffffffUL; 1101 t->signal = 0xffff; /* LOCKED */ 1102 call_all(dev, tuner, g_tuner, t); 1103 1104 return 0; 1105 } 1106 1107 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) 1108 { 1109 if (0 != t->index) 1110 return -EINVAL; 1111 return 0; 1112 } 1113 1114 int cx231xx_g_frequency(struct file *file, void *priv, 1115 struct v4l2_frequency *f) 1116 { 1117 struct cx231xx *dev = video_drvdata(file); 1118 1119 if (f->tuner) 1120 return -EINVAL; 1121 1122 f->frequency = dev->ctl_freq; 1123 1124 return 0; 1125 } 1126 1127 int cx231xx_s_frequency(struct file *file, void *priv, 1128 const struct v4l2_frequency *f) 1129 { 1130 struct cx231xx *dev = video_drvdata(file); 1131 struct v4l2_frequency new_freq = *f; 1132 int rc; 1133 u32 if_frequency = 5400000; 1134 1135 dev_dbg(dev->dev, 1136 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n", 1137 f->frequency, f->type); 1138 1139 if (0 != f->tuner) 1140 return -EINVAL; 1141 1142 /* set pre channel change settings in DIF first */ 1143 rc = cx231xx_tuner_pre_channel_change(dev); 1144 1145 call_all(dev, tuner, s_frequency, f); 1146 call_all(dev, tuner, g_frequency, &new_freq); 1147 dev->ctl_freq = new_freq.frequency; 1148 1149 /* set post channel change settings in DIF first */ 1150 rc = cx231xx_tuner_post_channel_change(dev); 1151 1152 if (dev->tuner_type == TUNER_NXP_TDA18271) { 1153 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443)) 1154 if_frequency = 5400000; /*5.4MHz */ 1155 else if (dev->norm & V4L2_STD_B) 1156 if_frequency = 6000000; /*6.0MHz */ 1157 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK)) 1158 if_frequency = 6900000; /*6.9MHz */ 1159 else if (dev->norm & V4L2_STD_GH) 1160 if_frequency = 7100000; /*7.1MHz */ 1161 else if (dev->norm & V4L2_STD_PAL_I) 1162 if_frequency = 7250000; /*7.25MHz */ 1163 else if (dev->norm & V4L2_STD_SECAM_L) 1164 if_frequency = 6900000; /*6.9MHz */ 1165 else if (dev->norm & V4L2_STD_SECAM_LC) 1166 if_frequency = 1250000; /*1.25MHz */ 1167 1168 dev_dbg(dev->dev, 1169 "if_frequency is set to %d\n", if_frequency); 1170 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1); 1171 1172 update_HH_register_after_set_DIF(dev); 1173 } 1174 1175 dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency); 1176 1177 return rc; 1178 } 1179 1180 #ifdef CONFIG_VIDEO_ADV_DEBUG 1181 1182 int cx231xx_g_chip_info(struct file *file, void *fh, 1183 struct v4l2_dbg_chip_info *chip) 1184 { 1185 switch (chip->match.addr) { 1186 case 0: /* Cx231xx - internal registers */ 1187 return 0; 1188 case 1: /* AFE - read byte */ 1189 strscpy(chip->name, "AFE (byte)", sizeof(chip->name)); 1190 return 0; 1191 case 2: /* Video Block - read byte */ 1192 strscpy(chip->name, "Video (byte)", sizeof(chip->name)); 1193 return 0; 1194 case 3: /* I2S block - read byte */ 1195 strscpy(chip->name, "I2S (byte)", sizeof(chip->name)); 1196 return 0; 1197 case 4: /* AFE - read dword */ 1198 strscpy(chip->name, "AFE (dword)", sizeof(chip->name)); 1199 return 0; 1200 case 5: /* Video Block - read dword */ 1201 strscpy(chip->name, "Video (dword)", sizeof(chip->name)); 1202 return 0; 1203 case 6: /* I2S Block - read dword */ 1204 strscpy(chip->name, "I2S (dword)", sizeof(chip->name)); 1205 return 0; 1206 } 1207 return -EINVAL; 1208 } 1209 1210 int cx231xx_g_register(struct file *file, void *priv, 1211 struct v4l2_dbg_register *reg) 1212 { 1213 struct cx231xx *dev = video_drvdata(file); 1214 int ret; 1215 u8 value[4] = { 0, 0, 0, 0 }; 1216 u32 data = 0; 1217 1218 switch (reg->match.addr) { 1219 case 0: /* Cx231xx - internal registers */ 1220 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, 1221 (u16)reg->reg, value, 4); 1222 reg->val = value[0] | value[1] << 8 | 1223 value[2] << 16 | (u32)value[3] << 24; 1224 reg->size = 4; 1225 break; 1226 case 1: /* AFE - read byte */ 1227 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, 1228 (u16)reg->reg, 2, &data, 1); 1229 reg->val = data; 1230 reg->size = 1; 1231 break; 1232 case 2: /* Video Block - read byte */ 1233 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1234 (u16)reg->reg, 2, &data, 1); 1235 reg->val = data; 1236 reg->size = 1; 1237 break; 1238 case 3: /* I2S block - read byte */ 1239 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1240 (u16)reg->reg, 1, &data, 1); 1241 reg->val = data; 1242 reg->size = 1; 1243 break; 1244 case 4: /* AFE - read dword */ 1245 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS, 1246 (u16)reg->reg, 2, &data, 4); 1247 reg->val = data; 1248 reg->size = 4; 1249 break; 1250 case 5: /* Video Block - read dword */ 1251 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1252 (u16)reg->reg, 2, &data, 4); 1253 reg->val = data; 1254 reg->size = 4; 1255 break; 1256 case 6: /* I2S Block - read dword */ 1257 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1258 (u16)reg->reg, 1, &data, 4); 1259 reg->val = data; 1260 reg->size = 4; 1261 break; 1262 default: 1263 return -EINVAL; 1264 } 1265 return ret < 0 ? ret : 0; 1266 } 1267 1268 int cx231xx_s_register(struct file *file, void *priv, 1269 const struct v4l2_dbg_register *reg) 1270 { 1271 struct cx231xx *dev = video_drvdata(file); 1272 int ret; 1273 u8 data[4] = { 0, 0, 0, 0 }; 1274 1275 switch (reg->match.addr) { 1276 case 0: /* cx231xx internal registers */ 1277 data[0] = (u8) reg->val; 1278 data[1] = (u8) (reg->val >> 8); 1279 data[2] = (u8) (reg->val >> 16); 1280 data[3] = (u8) (reg->val >> 24); 1281 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, 1282 (u16)reg->reg, data, 4); 1283 break; 1284 case 1: /* AFE - write byte */ 1285 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, 1286 (u16)reg->reg, 2, reg->val, 1); 1287 break; 1288 case 2: /* Video Block - write byte */ 1289 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1290 (u16)reg->reg, 2, reg->val, 1); 1291 break; 1292 case 3: /* I2S block - write byte */ 1293 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1294 (u16)reg->reg, 1, reg->val, 1); 1295 break; 1296 case 4: /* AFE - write dword */ 1297 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS, 1298 (u16)reg->reg, 2, reg->val, 4); 1299 break; 1300 case 5: /* Video Block - write dword */ 1301 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS, 1302 (u16)reg->reg, 2, reg->val, 4); 1303 break; 1304 case 6: /* I2S block - write dword */ 1305 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS, 1306 (u16)reg->reg, 1, reg->val, 4); 1307 break; 1308 default: 1309 return -EINVAL; 1310 } 1311 return ret < 0 ? ret : 0; 1312 } 1313 #endif 1314 1315 static int vidioc_g_pixelaspect(struct file *file, void *priv, 1316 int type, struct v4l2_fract *f) 1317 { 1318 struct cx231xx *dev = video_drvdata(file); 1319 bool is_50hz = dev->norm & V4L2_STD_625_50; 1320 1321 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 1322 return -EINVAL; 1323 1324 f->numerator = is_50hz ? 54 : 11; 1325 f->denominator = is_50hz ? 59 : 10; 1326 1327 return 0; 1328 } 1329 1330 static int vidioc_g_selection(struct file *file, void *priv, 1331 struct v4l2_selection *s) 1332 { 1333 struct cx231xx *dev = video_drvdata(file); 1334 1335 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 1336 return -EINVAL; 1337 1338 switch (s->target) { 1339 case V4L2_SEL_TGT_CROP_BOUNDS: 1340 case V4L2_SEL_TGT_CROP_DEFAULT: 1341 s->r.left = 0; 1342 s->r.top = 0; 1343 s->r.width = dev->width; 1344 s->r.height = dev->height; 1345 break; 1346 default: 1347 return -EINVAL; 1348 } 1349 return 0; 1350 } 1351 1352 int cx231xx_querycap(struct file *file, void *priv, 1353 struct v4l2_capability *cap) 1354 { 1355 struct cx231xx *dev = video_drvdata(file); 1356 1357 strscpy(cap->driver, "cx231xx", sizeof(cap->driver)); 1358 strscpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card)); 1359 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 1360 cap->capabilities = V4L2_CAP_READWRITE | 1361 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE | 1362 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS; 1363 if (video_is_registered(&dev->radio_dev)) 1364 cap->capabilities |= V4L2_CAP_RADIO; 1365 if (dev->tuner_type != TUNER_ABSENT) 1366 cap->capabilities |= V4L2_CAP_TUNER; 1367 1368 return 0; 1369 } 1370 1371 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 1372 struct v4l2_fmtdesc *f) 1373 { 1374 if (unlikely(f->index >= ARRAY_SIZE(format))) 1375 return -EINVAL; 1376 1377 f->pixelformat = format[f->index].fourcc; 1378 1379 return 0; 1380 } 1381 1382 /* RAW VBI ioctls */ 1383 1384 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, 1385 struct v4l2_format *f) 1386 { 1387 struct cx231xx *dev = video_drvdata(file); 1388 1389 f->fmt.vbi.sampling_rate = 6750000 * 4; 1390 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; 1391 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; 1392 f->fmt.vbi.offset = 0; 1393 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? 1394 PAL_VBI_START_LINE : NTSC_VBI_START_LINE; 1395 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? 1396 PAL_VBI_LINES : NTSC_VBI_LINES; 1397 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? 1398 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; 1399 f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; 1400 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); 1401 1402 return 0; 1403 1404 } 1405 1406 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv, 1407 struct v4l2_format *f) 1408 { 1409 struct cx231xx *dev = video_drvdata(file); 1410 1411 f->fmt.vbi.sampling_rate = 6750000 * 4; 1412 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; 1413 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; 1414 f->fmt.vbi.offset = 0; 1415 f->fmt.vbi.flags = 0; 1416 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ? 1417 PAL_VBI_START_LINE : NTSC_VBI_START_LINE; 1418 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ? 1419 PAL_VBI_LINES : NTSC_VBI_LINES; 1420 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ? 1421 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263; 1422 f->fmt.vbi.count[1] = f->fmt.vbi.count[0]; 1423 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved)); 1424 1425 return 0; 1426 1427 } 1428 1429 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, 1430 struct v4l2_format *f) 1431 { 1432 return vidioc_try_fmt_vbi_cap(file, priv, f); 1433 } 1434 1435 /* ----------------------------------------------------------- */ 1436 /* RADIO ESPECIFIC IOCTLS */ 1437 /* ----------------------------------------------------------- */ 1438 1439 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) 1440 { 1441 struct cx231xx *dev = video_drvdata(file); 1442 1443 if (t->index) 1444 return -EINVAL; 1445 1446 strscpy(t->name, "Radio", sizeof(t->name)); 1447 1448 call_all(dev, tuner, g_tuner, t); 1449 1450 return 0; 1451 } 1452 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) 1453 { 1454 struct cx231xx *dev = video_drvdata(file); 1455 1456 if (t->index) 1457 return -EINVAL; 1458 1459 call_all(dev, tuner, s_tuner, t); 1460 1461 return 0; 1462 } 1463 1464 /* 1465 * cx231xx_v4l2_open() 1466 * inits the device and starts isoc transfer 1467 */ 1468 static int cx231xx_v4l2_open(struct file *filp) 1469 { 1470 struct video_device *vdev = video_devdata(filp); 1471 struct cx231xx *dev = video_drvdata(filp); 1472 int ret; 1473 1474 if (mutex_lock_interruptible(&dev->lock)) 1475 return -ERESTARTSYS; 1476 1477 ret = v4l2_fh_open(filp); 1478 if (ret) { 1479 mutex_unlock(&dev->lock); 1480 return ret; 1481 } 1482 1483 if (dev->users++ == 0) { 1484 /* Power up in Analog TV mode */ 1485 if (dev->board.external_av) 1486 cx231xx_set_power_mode(dev, 1487 POLARIS_AVMODE_ENXTERNAL_AV); 1488 else 1489 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV); 1490 1491 /* set video alternate setting */ 1492 cx231xx_set_video_alternate(dev); 1493 1494 /* Needed, since GPIO might have disabled power of 1495 some i2c device */ 1496 cx231xx_config_i2c(dev); 1497 1498 /* device needs to be initialized before isoc transfer */ 1499 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input; 1500 } 1501 1502 if (vdev->vfl_type == VFL_TYPE_RADIO) { 1503 cx231xx_videodbg("video_open: setting radio device\n"); 1504 1505 /* cx231xx_start_radio(dev); */ 1506 1507 call_all(dev, tuner, s_radio); 1508 } 1509 if (vdev->vfl_type == VFL_TYPE_VBI) { 1510 /* Set the required alternate setting VBI interface works in 1511 Bulk mode only */ 1512 cx231xx_set_alt_setting(dev, INDEX_VANC, 0); 1513 } 1514 mutex_unlock(&dev->lock); 1515 return 0; 1516 } 1517 1518 /* 1519 * cx231xx_realease_resources() 1520 * unregisters the v4l2,i2c and usb devices 1521 * called when the device gets disconnected or at module unload 1522 */ 1523 void cx231xx_release_analog_resources(struct cx231xx *dev) 1524 { 1525 1526 /*FIXME: I2C IR should be disconnected */ 1527 1528 if (video_is_registered(&dev->radio_dev)) 1529 video_unregister_device(&dev->radio_dev); 1530 if (video_is_registered(&dev->vbi_dev)) { 1531 dev_info(dev->dev, "V4L2 device %s deregistered\n", 1532 video_device_node_name(&dev->vbi_dev)); 1533 video_unregister_device(&dev->vbi_dev); 1534 } 1535 if (video_is_registered(&dev->vdev)) { 1536 dev_info(dev->dev, "V4L2 device %s deregistered\n", 1537 video_device_node_name(&dev->vdev)); 1538 1539 if (dev->board.has_417) 1540 cx231xx_417_unregister(dev); 1541 1542 video_unregister_device(&dev->vdev); 1543 } 1544 v4l2_ctrl_handler_free(&dev->ctrl_handler); 1545 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler); 1546 } 1547 1548 /* 1549 * cx231xx_close() 1550 * stops streaming and deallocates all resources allocated by the v4l2 1551 * calls and ioctls 1552 */ 1553 static int cx231xx_close(struct file *filp) 1554 { 1555 struct cx231xx *dev = video_drvdata(filp); 1556 struct video_device *vdev = video_devdata(filp); 1557 1558 _vb2_fop_release(filp, NULL); 1559 1560 if (--dev->users == 0) { 1561 /* Save some power by putting tuner to sleep */ 1562 call_all(dev, tuner, standby); 1563 1564 /* do this before setting alternate! */ 1565 if (dev->USE_ISO) 1566 cx231xx_uninit_isoc(dev); 1567 else 1568 cx231xx_uninit_bulk(dev); 1569 cx231xx_set_mode(dev, CX231XX_SUSPEND); 1570 } 1571 1572 /* 1573 * To workaround error number=-71 on EP0 for VideoGrabber, 1574 * need exclude following. 1575 * FIXME: It is probably safe to remove most of these, as we're 1576 * now avoiding the alternate setting for INDEX_VANC 1577 */ 1578 if (!dev->board.no_alt_vanc && vdev->vfl_type == VFL_TYPE_VBI) { 1579 /* do this before setting alternate! */ 1580 cx231xx_uninit_vbi_isoc(dev); 1581 1582 /* set alternate 0 */ 1583 if (!dev->vbi_or_sliced_cc_mode) 1584 cx231xx_set_alt_setting(dev, INDEX_VANC, 0); 1585 else 1586 cx231xx_set_alt_setting(dev, INDEX_HANC, 0); 1587 1588 wake_up_interruptible_nr(&dev->open, 1); 1589 return 0; 1590 } 1591 1592 if (dev->users == 0) { 1593 /* set alternate 0 */ 1594 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0); 1595 } 1596 1597 wake_up_interruptible(&dev->open); 1598 return 0; 1599 } 1600 1601 static int cx231xx_v4l2_close(struct file *filp) 1602 { 1603 struct cx231xx *dev = video_drvdata(filp); 1604 int rc; 1605 1606 mutex_lock(&dev->lock); 1607 rc = cx231xx_close(filp); 1608 mutex_unlock(&dev->lock); 1609 return rc; 1610 } 1611 1612 static const struct v4l2_file_operations cx231xx_v4l_fops = { 1613 .owner = THIS_MODULE, 1614 .open = cx231xx_v4l2_open, 1615 .release = cx231xx_v4l2_close, 1616 .read = vb2_fop_read, 1617 .poll = vb2_fop_poll, 1618 .mmap = vb2_fop_mmap, 1619 .unlocked_ioctl = video_ioctl2, 1620 }; 1621 1622 static const struct v4l2_ioctl_ops video_ioctl_ops = { 1623 .vidioc_querycap = cx231xx_querycap, 1624 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 1625 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1626 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, 1627 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 1628 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 1629 .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap, 1630 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, 1631 .vidioc_g_pixelaspect = vidioc_g_pixelaspect, 1632 .vidioc_g_selection = vidioc_g_selection, 1633 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1634 .vidioc_querybuf = vb2_ioctl_querybuf, 1635 .vidioc_qbuf = vb2_ioctl_qbuf, 1636 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1637 .vidioc_s_std = vidioc_s_std, 1638 .vidioc_g_std = vidioc_g_std, 1639 .vidioc_enum_input = cx231xx_enum_input, 1640 .vidioc_g_input = cx231xx_g_input, 1641 .vidioc_s_input = cx231xx_s_input, 1642 .vidioc_streamon = vb2_ioctl_streamon, 1643 .vidioc_streamoff = vb2_ioctl_streamoff, 1644 .vidioc_g_tuner = cx231xx_g_tuner, 1645 .vidioc_s_tuner = cx231xx_s_tuner, 1646 .vidioc_g_frequency = cx231xx_g_frequency, 1647 .vidioc_s_frequency = cx231xx_s_frequency, 1648 #ifdef CONFIG_VIDEO_ADV_DEBUG 1649 .vidioc_g_chip_info = cx231xx_g_chip_info, 1650 .vidioc_g_register = cx231xx_g_register, 1651 .vidioc_s_register = cx231xx_s_register, 1652 #endif 1653 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1654 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1655 }; 1656 1657 static struct video_device cx231xx_vbi_template; 1658 1659 static const struct video_device cx231xx_video_template = { 1660 .fops = &cx231xx_v4l_fops, 1661 .release = video_device_release_empty, 1662 .ioctl_ops = &video_ioctl_ops, 1663 .tvnorms = V4L2_STD_ALL, 1664 }; 1665 1666 static const struct v4l2_file_operations radio_fops = { 1667 .owner = THIS_MODULE, 1668 .open = cx231xx_v4l2_open, 1669 .release = cx231xx_v4l2_close, 1670 .poll = v4l2_ctrl_poll, 1671 .unlocked_ioctl = video_ioctl2, 1672 }; 1673 1674 static const struct v4l2_ioctl_ops radio_ioctl_ops = { 1675 .vidioc_querycap = cx231xx_querycap, 1676 .vidioc_g_tuner = radio_g_tuner, 1677 .vidioc_s_tuner = radio_s_tuner, 1678 .vidioc_g_frequency = cx231xx_g_frequency, 1679 .vidioc_s_frequency = cx231xx_s_frequency, 1680 #ifdef CONFIG_VIDEO_ADV_DEBUG 1681 .vidioc_g_chip_info = cx231xx_g_chip_info, 1682 .vidioc_g_register = cx231xx_g_register, 1683 .vidioc_s_register = cx231xx_s_register, 1684 #endif 1685 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1686 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1687 }; 1688 1689 static struct video_device cx231xx_radio_template = { 1690 .name = "cx231xx-radio", 1691 .fops = &radio_fops, 1692 .ioctl_ops = &radio_ioctl_ops, 1693 }; 1694 1695 /******************************** usb interface ******************************/ 1696 1697 static void cx231xx_vdev_init(struct cx231xx *dev, 1698 struct video_device *vfd, 1699 const struct video_device *template, 1700 const char *type_name) 1701 { 1702 *vfd = *template; 1703 vfd->v4l2_dev = &dev->v4l2_dev; 1704 vfd->release = video_device_release_empty; 1705 vfd->lock = &dev->lock; 1706 1707 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name); 1708 1709 video_set_drvdata(vfd, dev); 1710 if (dev->tuner_type == TUNER_ABSENT) { 1711 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY); 1712 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY); 1713 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER); 1714 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER); 1715 } 1716 } 1717 1718 int cx231xx_register_analog_devices(struct cx231xx *dev) 1719 { 1720 struct vb2_queue *q; 1721 int ret; 1722 1723 dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION); 1724 1725 /* set default norm */ 1726 dev->norm = V4L2_STD_PAL; 1727 dev->width = norm_maxw(dev); 1728 dev->height = norm_maxh(dev); 1729 dev->interlaced = 0; 1730 1731 /* Analog specific initialization */ 1732 dev->format = &format[0]; 1733 1734 /* Set the initial input */ 1735 video_mux(dev, dev->video_input); 1736 1737 call_all(dev, video, s_std, dev->norm); 1738 1739 v4l2_ctrl_handler_init(&dev->ctrl_handler, 10); 1740 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5); 1741 1742 if (dev->sd_cx25840) { 1743 v4l2_ctrl_add_handler(&dev->ctrl_handler, 1744 dev->sd_cx25840->ctrl_handler, NULL, true); 1745 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler, 1746 dev->sd_cx25840->ctrl_handler, 1747 v4l2_ctrl_radio_filter, true); 1748 } 1749 1750 if (dev->ctrl_handler.error) 1751 return dev->ctrl_handler.error; 1752 if (dev->radio_ctrl_handler.error) 1753 return dev->radio_ctrl_handler.error; 1754 1755 /* enable vbi capturing */ 1756 /* write code here... */ 1757 1758 /* allocate and fill video video_device struct */ 1759 cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video"); 1760 #if defined(CONFIG_MEDIA_CONTROLLER) 1761 dev->video_pad.flags = MEDIA_PAD_FL_SINK; 1762 ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad); 1763 if (ret < 0) 1764 dev_err(dev->dev, "failed to initialize video media entity!\n"); 1765 #endif 1766 dev->vdev.ctrl_handler = &dev->ctrl_handler; 1767 1768 q = &dev->vidq; 1769 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1770 q->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF | VB2_READ; 1771 q->drv_priv = dev; 1772 q->buf_struct_size = sizeof(struct cx231xx_buffer); 1773 q->ops = &cx231xx_video_qops; 1774 q->mem_ops = &vb2_vmalloc_memops; 1775 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1776 q->min_buffers_needed = 1; 1777 q->lock = &dev->lock; 1778 ret = vb2_queue_init(q); 1779 if (ret) 1780 return ret; 1781 dev->vdev.queue = q; 1782 dev->vdev.device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | 1783 V4L2_CAP_VIDEO_CAPTURE; 1784 if (dev->tuner_type != TUNER_ABSENT) 1785 dev->vdev.device_caps |= V4L2_CAP_TUNER; 1786 1787 /* register v4l2 video video_device */ 1788 ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, 1789 video_nr[dev->devno]); 1790 if (ret) { 1791 dev_err(dev->dev, 1792 "unable to register video device (error=%i).\n", 1793 ret); 1794 return ret; 1795 } 1796 1797 dev_info(dev->dev, "Registered video device %s [v4l2]\n", 1798 video_device_node_name(&dev->vdev)); 1799 1800 /* Initialize VBI template */ 1801 cx231xx_vbi_template = cx231xx_video_template; 1802 strscpy(cx231xx_vbi_template.name, "cx231xx-vbi", 1803 sizeof(cx231xx_vbi_template.name)); 1804 1805 /* Allocate and fill vbi video_device struct */ 1806 cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi"); 1807 1808 #if defined(CONFIG_MEDIA_CONTROLLER) 1809 dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; 1810 ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); 1811 if (ret < 0) 1812 dev_err(dev->dev, "failed to initialize vbi media entity!\n"); 1813 #endif 1814 dev->vbi_dev.ctrl_handler = &dev->ctrl_handler; 1815 1816 q = &dev->vbiq; 1817 q->type = V4L2_BUF_TYPE_VBI_CAPTURE; 1818 q->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF | VB2_READ; 1819 q->drv_priv = dev; 1820 q->buf_struct_size = sizeof(struct cx231xx_buffer); 1821 q->ops = &cx231xx_vbi_qops; 1822 q->mem_ops = &vb2_vmalloc_memops; 1823 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1824 q->min_buffers_needed = 1; 1825 q->lock = &dev->lock; 1826 ret = vb2_queue_init(q); 1827 if (ret) 1828 return ret; 1829 dev->vbi_dev.queue = q; 1830 dev->vbi_dev.device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | 1831 V4L2_CAP_VBI_CAPTURE; 1832 if (dev->tuner_type != TUNER_ABSENT) 1833 dev->vbi_dev.device_caps |= V4L2_CAP_TUNER; 1834 1835 /* register v4l2 vbi video_device */ 1836 ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, 1837 vbi_nr[dev->devno]); 1838 if (ret < 0) { 1839 dev_err(dev->dev, "unable to register vbi device\n"); 1840 return ret; 1841 } 1842 1843 dev_info(dev->dev, "Registered VBI device %s\n", 1844 video_device_node_name(&dev->vbi_dev)); 1845 1846 if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) { 1847 cx231xx_vdev_init(dev, &dev->radio_dev, 1848 &cx231xx_radio_template, "radio"); 1849 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler; 1850 dev->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER; 1851 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO, 1852 radio_nr[dev->devno]); 1853 if (ret < 0) { 1854 dev_err(dev->dev, 1855 "can't register radio device\n"); 1856 return ret; 1857 } 1858 dev_info(dev->dev, "Registered radio device as %s\n", 1859 video_device_node_name(&dev->radio_dev)); 1860 } 1861 1862 return 0; 1863 } 1864