1 /* 2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB 3 video capture devices 4 5 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> 6 Markus Rechberger <mrechberger@gmail.com> 7 Mauro Carvalho Chehab <mchehab@infradead.org> 8 Sascha Sommer <saschasommer@freenet.de> 9 Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com> 10 11 Some parts based on SN9C10x PC Camera Controllers GPL driver made 12 by Luca Risolia <luca.risolia@studio.unibo.it> 13 14 This program is free software; you can redistribute it and/or modify 15 it under the terms of the GNU General Public License as published by 16 the Free Software Foundation; either version 2 of the License, or 17 (at your option) any later version. 18 19 This program is distributed in the hope that it will be useful, 20 but WITHOUT ANY WARRANTY; without even the implied warranty of 21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 GNU General Public License for more details. 23 24 You should have received a copy of the GNU General Public License 25 along with this program; if not, write to the Free Software 26 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 */ 28 29 #include <linux/init.h> 30 #include <linux/list.h> 31 #include <linux/module.h> 32 #include <linux/kernel.h> 33 #include <linux/bitmap.h> 34 #include <linux/usb.h> 35 #include <linux/i2c.h> 36 #include <linux/mm.h> 37 #include <linux/mutex.h> 38 #include <linux/slab.h> 39 40 #include "em28xx.h" 41 #include <media/v4l2-common.h> 42 #include <media/v4l2-ioctl.h> 43 #include <media/v4l2-event.h> 44 #include <media/msp3400.h> 45 #include <media/tuner.h> 46 47 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ 48 "Markus Rechberger <mrechberger@gmail.com>, " \ 49 "Mauro Carvalho Chehab <mchehab@infradead.org>, " \ 50 "Sascha Sommer <saschasommer@freenet.de>" 51 52 #define DRIVER_DESC "Empia em28xx based USB video device driver" 53 54 #define EM28XX_VERSION "0.2.0" 55 56 #define em28xx_videodbg(fmt, arg...) do {\ 57 if (video_debug) \ 58 printk(KERN_INFO "%s %s :"fmt, \ 59 dev->name, __func__ , ##arg); } while (0) 60 61 static unsigned int isoc_debug; 62 module_param(isoc_debug, int, 0644); 63 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); 64 65 #define em28xx_isocdbg(fmt, arg...) \ 66 do {\ 67 if (isoc_debug) { \ 68 printk(KERN_INFO "%s %s :"fmt, \ 69 dev->name, __func__ , ##arg); \ 70 } \ 71 } while (0) 72 73 MODULE_AUTHOR(DRIVER_AUTHOR); 74 MODULE_DESCRIPTION(DRIVER_DESC); 75 MODULE_LICENSE("GPL"); 76 MODULE_VERSION(EM28XX_VERSION); 77 78 79 #define EM25XX_FRMDATAHDR_BYTE1 0x02 80 #define EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE 0x20 81 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_END 0x02 82 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_ID 0x01 83 #define EM25XX_FRMDATAHDR_BYTE2_MASK (EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE | \ 84 EM25XX_FRMDATAHDR_BYTE2_FRAME_END | \ 85 EM25XX_FRMDATAHDR_BYTE2_FRAME_ID) 86 87 88 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; 89 static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; 90 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; 91 92 module_param_array(video_nr, int, NULL, 0444); 93 module_param_array(vbi_nr, int, NULL, 0444); 94 module_param_array(radio_nr, int, NULL, 0444); 95 MODULE_PARM_DESC(video_nr, "video device numbers"); 96 MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); 97 MODULE_PARM_DESC(radio_nr, "radio device numbers"); 98 99 static unsigned int video_debug; 100 module_param(video_debug, int, 0644); 101 MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); 102 103 /* supported video standards */ 104 static struct em28xx_fmt format[] = { 105 { 106 .name = "16 bpp YUY2, 4:2:2, packed", 107 .fourcc = V4L2_PIX_FMT_YUYV, 108 .depth = 16, 109 .reg = EM28XX_OUTFMT_YUV422_Y0UY1V, 110 }, { 111 .name = "16 bpp RGB 565, LE", 112 .fourcc = V4L2_PIX_FMT_RGB565, 113 .depth = 16, 114 .reg = EM28XX_OUTFMT_RGB_16_656, 115 }, { 116 .name = "8 bpp Bayer BGBG..GRGR", 117 .fourcc = V4L2_PIX_FMT_SBGGR8, 118 .depth = 8, 119 .reg = EM28XX_OUTFMT_RGB_8_BGBG, 120 }, { 121 .name = "8 bpp Bayer GRGR..BGBG", 122 .fourcc = V4L2_PIX_FMT_SGRBG8, 123 .depth = 8, 124 .reg = EM28XX_OUTFMT_RGB_8_GRGR, 125 }, { 126 .name = "8 bpp Bayer GBGB..RGRG", 127 .fourcc = V4L2_PIX_FMT_SGBRG8, 128 .depth = 8, 129 .reg = EM28XX_OUTFMT_RGB_8_GBGB, 130 }, { 131 .name = "12 bpp YUV411", 132 .fourcc = V4L2_PIX_FMT_YUV411P, 133 .depth = 12, 134 .reg = EM28XX_OUTFMT_YUV411, 135 }, 136 }; 137 138 /* ------------------------------------------------------------------ 139 DMA and thread functions 140 ------------------------------------------------------------------*/ 141 142 /* 143 * Finish the current buffer 144 */ 145 static inline void finish_buffer(struct em28xx *dev, 146 struct em28xx_buffer *buf) 147 { 148 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field); 149 150 buf->vb.v4l2_buf.sequence = dev->field_count++; 151 buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED; 152 v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp); 153 154 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE); 155 } 156 157 /* 158 * Copy picture data from USB buffer to videobuf buffer 159 */ 160 static void em28xx_copy_video(struct em28xx *dev, 161 struct em28xx_buffer *buf, 162 unsigned char *usb_buf, 163 unsigned long len) 164 { 165 void *fieldstart, *startwrite, *startread; 166 int linesdone, currlinedone, offset, lencopy, remain; 167 int bytesperline = dev->width << 1; 168 169 if (buf->pos + len > buf->length) 170 len = buf->length - buf->pos; 171 172 startread = usb_buf; 173 remain = len; 174 175 if (dev->progressive || buf->top_field) 176 fieldstart = buf->vb_buf; 177 else /* interlaced mode, even nr. of lines */ 178 fieldstart = buf->vb_buf + bytesperline; 179 180 linesdone = buf->pos / bytesperline; 181 currlinedone = buf->pos % bytesperline; 182 183 if (dev->progressive) 184 offset = linesdone * bytesperline + currlinedone; 185 else 186 offset = linesdone * bytesperline * 2 + currlinedone; 187 188 startwrite = fieldstart + offset; 189 lencopy = bytesperline - currlinedone; 190 lencopy = lencopy > remain ? remain : lencopy; 191 192 if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) { 193 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n", 194 ((char *)startwrite + lencopy) - 195 ((char *)buf->vb_buf + buf->length)); 196 remain = (char *)buf->vb_buf + buf->length - 197 (char *)startwrite; 198 lencopy = remain; 199 } 200 if (lencopy <= 0) 201 return; 202 memcpy(startwrite, startread, lencopy); 203 204 remain -= lencopy; 205 206 while (remain > 0) { 207 if (dev->progressive) 208 startwrite += lencopy; 209 else 210 startwrite += lencopy + bytesperline; 211 startread += lencopy; 212 if (bytesperline > remain) 213 lencopy = remain; 214 else 215 lencopy = bytesperline; 216 217 if ((char *)startwrite + lencopy > (char *)buf->vb_buf + 218 buf->length) { 219 em28xx_isocdbg("Overflow of %zi bytes past buffer end" 220 "(2)\n", 221 ((char *)startwrite + lencopy) - 222 ((char *)buf->vb_buf + buf->length)); 223 lencopy = remain = (char *)buf->vb_buf + buf->length - 224 (char *)startwrite; 225 } 226 if (lencopy <= 0) 227 break; 228 229 memcpy(startwrite, startread, lencopy); 230 231 remain -= lencopy; 232 } 233 234 buf->pos += len; 235 } 236 237 /* 238 * Copy VBI data from USB buffer to videobuf buffer 239 */ 240 static void em28xx_copy_vbi(struct em28xx *dev, 241 struct em28xx_buffer *buf, 242 unsigned char *usb_buf, 243 unsigned long len) 244 { 245 unsigned int offset; 246 247 if (buf->pos + len > buf->length) 248 len = buf->length - buf->pos; 249 250 offset = buf->pos; 251 /* Make sure the bottom field populates the second half of the frame */ 252 if (buf->top_field == 0) 253 offset += dev->vbi_width * dev->vbi_height; 254 255 memcpy(buf->vb_buf + offset, usb_buf, len); 256 buf->pos += len; 257 } 258 259 static inline void print_err_status(struct em28xx *dev, 260 int packet, int status) 261 { 262 char *errmsg = "Unknown"; 263 264 switch (status) { 265 case -ENOENT: 266 errmsg = "unlinked synchronuously"; 267 break; 268 case -ECONNRESET: 269 errmsg = "unlinked asynchronuously"; 270 break; 271 case -ENOSR: 272 errmsg = "Buffer error (overrun)"; 273 break; 274 case -EPIPE: 275 errmsg = "Stalled (device not responding)"; 276 break; 277 case -EOVERFLOW: 278 errmsg = "Babble (bad cable?)"; 279 break; 280 case -EPROTO: 281 errmsg = "Bit-stuff error (bad cable?)"; 282 break; 283 case -EILSEQ: 284 errmsg = "CRC/Timeout (could be anything)"; 285 break; 286 case -ETIME: 287 errmsg = "Device does not respond"; 288 break; 289 } 290 if (packet < 0) { 291 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg); 292 } else { 293 em28xx_isocdbg("URB packet %d, status %d [%s].\n", 294 packet, status, errmsg); 295 } 296 } 297 298 /* 299 * get the next available buffer from dma queue 300 */ 301 static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev, 302 struct em28xx_dmaqueue *dma_q) 303 { 304 struct em28xx_buffer *buf; 305 306 if (list_empty(&dma_q->active)) { 307 em28xx_isocdbg("No active queue to serve\n"); 308 return NULL; 309 } 310 311 /* Get the next buffer */ 312 buf = list_entry(dma_q->active.next, struct em28xx_buffer, list); 313 /* Cleans up buffer - Useful for testing for frame/URB loss */ 314 list_del(&buf->list); 315 buf->pos = 0; 316 buf->vb_buf = buf->mem; 317 318 return buf; 319 } 320 321 /* 322 * Finish the current buffer if completed and prepare for the next field 323 */ 324 static struct em28xx_buffer * 325 finish_field_prepare_next(struct em28xx *dev, 326 struct em28xx_buffer *buf, 327 struct em28xx_dmaqueue *dma_q) 328 { 329 if (dev->progressive || dev->top_field) { /* Brand new frame */ 330 if (buf != NULL) 331 finish_buffer(dev, buf); 332 buf = get_next_buf(dev, dma_q); 333 } 334 if (buf != NULL) { 335 buf->top_field = dev->top_field; 336 buf->pos = 0; 337 } 338 339 return buf; 340 } 341 342 /* 343 * Process data packet according to the em2710/em2750/em28xx frame data format 344 */ 345 static inline void process_frame_data_em28xx(struct em28xx *dev, 346 unsigned char *data_pkt, 347 unsigned int data_len) 348 { 349 struct em28xx_buffer *buf = dev->usb_ctl.vid_buf; 350 struct em28xx_buffer *vbi_buf = dev->usb_ctl.vbi_buf; 351 struct em28xx_dmaqueue *dma_q = &dev->vidq; 352 struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq; 353 354 /* capture type 0 = vbi start 355 capture type 1 = vbi in progress 356 capture type 2 = video start 357 capture type 3 = video in progress */ 358 if (data_len >= 4) { 359 /* NOTE: Headers are always 4 bytes and 360 * never split across packets */ 361 if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 && 362 data_pkt[2] == 0x88 && data_pkt[3] == 0x88) { 363 /* Continuation */ 364 data_pkt += 4; 365 data_len -= 4; 366 } else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) { 367 /* Field start (VBI mode) */ 368 dev->capture_type = 0; 369 dev->vbi_read = 0; 370 em28xx_isocdbg("VBI START HEADER !!!\n"); 371 dev->top_field = !(data_pkt[2] & 1); 372 data_pkt += 4; 373 data_len -= 4; 374 } else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) { 375 /* Field start (VBI disabled) */ 376 dev->capture_type = 2; 377 em28xx_isocdbg("VIDEO START HEADER !!!\n"); 378 dev->top_field = !(data_pkt[2] & 1); 379 data_pkt += 4; 380 data_len -= 4; 381 } 382 } 383 /* NOTE: With bulk transfers, intermediate data packets 384 * have no continuation header */ 385 386 if (dev->capture_type == 0) { 387 vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q); 388 dev->usb_ctl.vbi_buf = vbi_buf; 389 dev->capture_type = 1; 390 } 391 392 if (dev->capture_type == 1) { 393 int vbi_size = dev->vbi_width * dev->vbi_height; 394 int vbi_data_len = ((dev->vbi_read + data_len) > vbi_size) ? 395 (vbi_size - dev->vbi_read) : data_len; 396 397 /* Copy VBI data */ 398 if (vbi_buf != NULL) 399 em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len); 400 dev->vbi_read += vbi_data_len; 401 402 if (vbi_data_len < data_len) { 403 /* Continue with copying video data */ 404 dev->capture_type = 2; 405 data_pkt += vbi_data_len; 406 data_len -= vbi_data_len; 407 } 408 } 409 410 if (dev->capture_type == 2) { 411 buf = finish_field_prepare_next(dev, buf, dma_q); 412 dev->usb_ctl.vid_buf = buf; 413 dev->capture_type = 3; 414 } 415 416 if (dev->capture_type == 3 && buf != NULL && data_len > 0) 417 em28xx_copy_video(dev, buf, data_pkt, data_len); 418 } 419 420 /* 421 * Process data packet according to the em25xx/em276x/7x/8x frame data format 422 */ 423 static inline void process_frame_data_em25xx(struct em28xx *dev, 424 unsigned char *data_pkt, 425 unsigned int data_len) 426 { 427 struct em28xx_buffer *buf = dev->usb_ctl.vid_buf; 428 struct em28xx_dmaqueue *dmaq = &dev->vidq; 429 bool frame_end = 0; 430 431 /* Check for header */ 432 /* NOTE: at least with bulk transfers, only the first packet 433 * has a header and has always set the FRAME_END bit */ 434 if (data_len >= 2) { /* em25xx header is only 2 bytes long */ 435 if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) && 436 ((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) { 437 dev->top_field = !(data_pkt[1] & 438 EM25XX_FRMDATAHDR_BYTE2_FRAME_ID); 439 frame_end = data_pkt[1] & 440 EM25XX_FRMDATAHDR_BYTE2_FRAME_END; 441 data_pkt += 2; 442 data_len -= 2; 443 } 444 445 /* Finish field and prepare next (BULK only) */ 446 if (dev->analog_xfer_bulk && frame_end) { 447 buf = finish_field_prepare_next(dev, buf, dmaq); 448 dev->usb_ctl.vid_buf = buf; 449 } 450 /* NOTE: in ISOC mode when a new frame starts and buf==NULL, 451 * we COULD already prepare a buffer here to avoid skipping the 452 * first frame. 453 */ 454 } 455 456 /* Copy data */ 457 if (buf != NULL && data_len > 0) 458 em28xx_copy_video(dev, buf, data_pkt, data_len); 459 460 /* Finish frame (ISOC only) => avoids lag of 1 frame */ 461 if (!dev->analog_xfer_bulk && frame_end) { 462 buf = finish_field_prepare_next(dev, buf, dmaq); 463 dev->usb_ctl.vid_buf = buf; 464 } 465 466 /* NOTE: Tested with USB bulk transfers only ! 467 * The wording in the datasheet suggests that isoc might work different. 468 * The current code assumes that with isoc transfers each packet has a 469 * header like with the other em28xx devices. 470 */ 471 /* NOTE: Support for interlaced mode is pure theory. It has not been 472 * tested and it is unknown if these devices actually support it. */ 473 /* NOTE: No VBI support yet (these chips likely do not support VBI). */ 474 } 475 476 /* Processes and copies the URB data content (video and VBI data) */ 477 static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb) 478 { 479 int xfer_bulk, num_packets, i; 480 unsigned char *usb_data_pkt; 481 unsigned int usb_data_len; 482 483 if (!dev) 484 return 0; 485 486 if (dev->disconnected) 487 return 0; 488 489 if (urb->status < 0) 490 print_err_status(dev, -1, urb->status); 491 492 xfer_bulk = usb_pipebulk(urb->pipe); 493 494 if (xfer_bulk) /* bulk */ 495 num_packets = 1; 496 else /* isoc */ 497 num_packets = urb->number_of_packets; 498 499 for (i = 0; i < num_packets; i++) { 500 if (xfer_bulk) { /* bulk */ 501 usb_data_len = urb->actual_length; 502 503 usb_data_pkt = urb->transfer_buffer; 504 } else { /* isoc */ 505 if (urb->iso_frame_desc[i].status < 0) { 506 print_err_status(dev, i, 507 urb->iso_frame_desc[i].status); 508 if (urb->iso_frame_desc[i].status != -EPROTO) 509 continue; 510 } 511 512 usb_data_len = urb->iso_frame_desc[i].actual_length; 513 if (usb_data_len > dev->max_pkt_size) { 514 em28xx_isocdbg("packet bigger than packet size"); 515 continue; 516 } 517 518 usb_data_pkt = urb->transfer_buffer + 519 urb->iso_frame_desc[i].offset; 520 } 521 522 if (usb_data_len == 0) { 523 /* NOTE: happens very often with isoc transfers */ 524 /* em28xx_usbdbg("packet %d is empty",i); - spammy */ 525 continue; 526 } 527 528 if (dev->is_em25xx) 529 process_frame_data_em25xx(dev, 530 usb_data_pkt, usb_data_len); 531 else 532 process_frame_data_em28xx(dev, 533 usb_data_pkt, usb_data_len); 534 535 } 536 return 1; 537 } 538 539 540 static int get_ressource(enum v4l2_buf_type f_type) 541 { 542 switch (f_type) { 543 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 544 return EM28XX_RESOURCE_VIDEO; 545 case V4L2_BUF_TYPE_VBI_CAPTURE: 546 return EM28XX_RESOURCE_VBI; 547 default: 548 BUG(); 549 return 0; 550 } 551 } 552 553 /* Usage lock check functions */ 554 static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type) 555 { 556 int res_type = get_ressource(f_type); 557 558 /* is it free? */ 559 if (dev->resources & res_type) { 560 /* no, someone else uses it */ 561 return -EBUSY; 562 } 563 564 /* it's free, grab it */ 565 dev->resources |= res_type; 566 em28xx_videodbg("res: get %d\n", res_type); 567 return 0; 568 } 569 570 static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type) 571 { 572 int res_type = get_ressource(f_type); 573 574 dev->resources &= ~res_type; 575 em28xx_videodbg("res: put %d\n", res_type); 576 } 577 578 /* ------------------------------------------------------------------ 579 Videobuf2 operations 580 ------------------------------------------------------------------*/ 581 582 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, 583 unsigned int *nbuffers, unsigned int *nplanes, 584 unsigned int sizes[], void *alloc_ctxs[]) 585 { 586 struct em28xx *dev = vb2_get_drv_priv(vq); 587 unsigned long size; 588 589 if (fmt) 590 size = fmt->fmt.pix.sizeimage; 591 else 592 size = (dev->width * dev->height * dev->format->depth + 7) >> 3; 593 594 if (size == 0) 595 return -EINVAL; 596 597 if (0 == *nbuffers) 598 *nbuffers = 32; 599 600 *nplanes = 1; 601 sizes[0] = size; 602 603 return 0; 604 } 605 606 static int 607 buffer_prepare(struct vb2_buffer *vb) 608 { 609 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue); 610 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb); 611 unsigned long size; 612 613 em28xx_videodbg("%s, field=%d\n", __func__, vb->v4l2_buf.field); 614 615 size = (dev->width * dev->height * dev->format->depth + 7) >> 3; 616 617 if (vb2_plane_size(vb, 0) < size) { 618 em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n", 619 __func__, vb2_plane_size(vb, 0), size); 620 return -EINVAL; 621 } 622 vb2_set_plane_payload(&buf->vb, 0, size); 623 624 return 0; 625 } 626 627 int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count) 628 { 629 struct em28xx *dev = vb2_get_drv_priv(vq); 630 struct v4l2_frequency f; 631 int rc = 0; 632 633 em28xx_videodbg("%s\n", __func__); 634 635 /* Make sure streaming is not already in progress for this type 636 of filehandle (e.g. video, vbi) */ 637 rc = res_get(dev, vq->type); 638 if (rc) 639 return rc; 640 641 if (dev->streaming_users == 0) { 642 /* First active streaming user, so allocate all the URBs */ 643 644 /* Allocate the USB bandwidth */ 645 em28xx_set_alternate(dev); 646 647 /* Needed, since GPIO might have disabled power of 648 some i2c device 649 */ 650 em28xx_wake_i2c(dev); 651 652 dev->capture_type = -1; 653 rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE, 654 dev->analog_xfer_bulk, 655 EM28XX_NUM_BUFS, 656 dev->max_pkt_size, 657 dev->packet_multiplier, 658 em28xx_urb_data_copy); 659 if (rc < 0) 660 return rc; 661 662 /* 663 * djh: it's not clear whether this code is still needed. I'm 664 * leaving it in here for now entirely out of concern for 665 * backward compatibility (the old code did it) 666 */ 667 668 /* Ask tuner to go to analog or radio mode */ 669 memset(&f, 0, sizeof(f)); 670 f.frequency = dev->ctl_freq; 671 if (vq->owner && vq->owner->vdev->vfl_type == VFL_TYPE_RADIO) 672 f.type = V4L2_TUNER_RADIO; 673 else 674 f.type = V4L2_TUNER_ANALOG_TV; 675 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f); 676 } 677 678 dev->streaming_users++; 679 680 return rc; 681 } 682 683 static int em28xx_stop_streaming(struct vb2_queue *vq) 684 { 685 struct em28xx *dev = vb2_get_drv_priv(vq); 686 struct em28xx_dmaqueue *vidq = &dev->vidq; 687 unsigned long flags = 0; 688 689 em28xx_videodbg("%s\n", __func__); 690 691 res_free(dev, vq->type); 692 693 if (dev->streaming_users-- == 1) { 694 /* Last active user, so shutdown all the URBS */ 695 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); 696 } 697 698 spin_lock_irqsave(&dev->slock, flags); 699 while (!list_empty(&vidq->active)) { 700 struct em28xx_buffer *buf; 701 buf = list_entry(vidq->active.next, struct em28xx_buffer, list); 702 list_del(&buf->list); 703 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 704 } 705 dev->usb_ctl.vid_buf = NULL; 706 spin_unlock_irqrestore(&dev->slock, flags); 707 708 return 0; 709 } 710 711 int em28xx_stop_vbi_streaming(struct vb2_queue *vq) 712 { 713 struct em28xx *dev = vb2_get_drv_priv(vq); 714 struct em28xx_dmaqueue *vbiq = &dev->vbiq; 715 unsigned long flags = 0; 716 717 em28xx_videodbg("%s\n", __func__); 718 719 res_free(dev, vq->type); 720 721 if (dev->streaming_users-- == 1) { 722 /* Last active user, so shutdown all the URBS */ 723 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); 724 } 725 726 spin_lock_irqsave(&dev->slock, flags); 727 while (!list_empty(&vbiq->active)) { 728 struct em28xx_buffer *buf; 729 buf = list_entry(vbiq->active.next, struct em28xx_buffer, list); 730 list_del(&buf->list); 731 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 732 } 733 dev->usb_ctl.vbi_buf = NULL; 734 spin_unlock_irqrestore(&dev->slock, flags); 735 736 return 0; 737 } 738 739 static void 740 buffer_queue(struct vb2_buffer *vb) 741 { 742 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue); 743 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb); 744 struct em28xx_dmaqueue *vidq = &dev->vidq; 745 unsigned long flags = 0; 746 747 em28xx_videodbg("%s\n", __func__); 748 buf->mem = vb2_plane_vaddr(vb, 0); 749 buf->length = vb2_plane_size(vb, 0); 750 751 spin_lock_irqsave(&dev->slock, flags); 752 list_add_tail(&buf->list, &vidq->active); 753 spin_unlock_irqrestore(&dev->slock, flags); 754 } 755 756 static struct vb2_ops em28xx_video_qops = { 757 .queue_setup = queue_setup, 758 .buf_prepare = buffer_prepare, 759 .buf_queue = buffer_queue, 760 .start_streaming = em28xx_start_analog_streaming, 761 .stop_streaming = em28xx_stop_streaming, 762 .wait_prepare = vb2_ops_wait_prepare, 763 .wait_finish = vb2_ops_wait_finish, 764 }; 765 766 int em28xx_vb2_setup(struct em28xx *dev) 767 { 768 int rc; 769 struct vb2_queue *q; 770 771 /* Setup Videobuf2 for Video capture */ 772 q = &dev->vb_vidq; 773 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 774 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 775 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 776 q->drv_priv = dev; 777 q->buf_struct_size = sizeof(struct em28xx_buffer); 778 q->ops = &em28xx_video_qops; 779 q->mem_ops = &vb2_vmalloc_memops; 780 781 rc = vb2_queue_init(q); 782 if (rc < 0) 783 return rc; 784 785 /* Setup Videobuf2 for VBI capture */ 786 q = &dev->vb_vbiq; 787 q->type = V4L2_BUF_TYPE_VBI_CAPTURE; 788 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR; 789 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 790 q->drv_priv = dev; 791 q->buf_struct_size = sizeof(struct em28xx_buffer); 792 q->ops = &em28xx_vbi_qops; 793 q->mem_ops = &vb2_vmalloc_memops; 794 795 rc = vb2_queue_init(q); 796 if (rc < 0) 797 return rc; 798 799 return 0; 800 } 801 802 /********************* v4l2 interface **************************************/ 803 804 static void video_mux(struct em28xx *dev, int index) 805 { 806 dev->ctl_input = index; 807 dev->ctl_ainput = INPUT(index)->amux; 808 dev->ctl_aoutput = INPUT(index)->aout; 809 810 if (!dev->ctl_aoutput) 811 dev->ctl_aoutput = EM28XX_AOUT_MASTER; 812 813 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing, 814 INPUT(index)->vmux, 0, 0); 815 816 if (dev->board.has_msp34xx) { 817 if (dev->i2s_speed) { 818 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, 819 s_i2s_clock_freq, dev->i2s_speed); 820 } 821 /* Note: this is msp3400 specific */ 822 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing, 823 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0); 824 } 825 826 if (dev->board.adecoder != EM28XX_NOADECODER) { 827 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing, 828 dev->ctl_ainput, dev->ctl_aoutput, 0); 829 } 830 831 em28xx_audio_analog_set(dev); 832 } 833 834 void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv) 835 { 836 struct em28xx *dev = priv; 837 838 /* 839 * In the case of non-AC97 volume controls, we still need 840 * to do some setups at em28xx, in order to mute/unmute 841 * and to adjust audio volume. However, the value ranges 842 * should be checked by the corresponding V4L subdriver. 843 */ 844 switch (ctrl->id) { 845 case V4L2_CID_AUDIO_MUTE: 846 dev->mute = ctrl->val; 847 em28xx_audio_analog_set(dev); 848 break; 849 case V4L2_CID_AUDIO_VOLUME: 850 dev->volume = ctrl->val; 851 em28xx_audio_analog_set(dev); 852 break; 853 } 854 } 855 856 static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl) 857 { 858 struct em28xx *dev = container_of(ctrl->handler, struct em28xx, ctrl_handler); 859 int ret = -EINVAL; 860 861 switch (ctrl->id) { 862 case V4L2_CID_AUDIO_MUTE: 863 dev->mute = ctrl->val; 864 ret = em28xx_audio_analog_set(dev); 865 break; 866 case V4L2_CID_AUDIO_VOLUME: 867 dev->volume = ctrl->val; 868 ret = em28xx_audio_analog_set(dev); 869 break; 870 case V4L2_CID_CONTRAST: 871 ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val); 872 break; 873 case V4L2_CID_BRIGHTNESS: 874 ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val); 875 break; 876 case V4L2_CID_SATURATION: 877 ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val); 878 break; 879 case V4L2_CID_BLUE_BALANCE: 880 ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val); 881 break; 882 case V4L2_CID_RED_BALANCE: 883 ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val); 884 break; 885 case V4L2_CID_SHARPNESS: 886 ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val); 887 break; 888 } 889 890 return (ret < 0) ? ret : 0; 891 } 892 893 const struct v4l2_ctrl_ops em28xx_ctrl_ops = { 894 .s_ctrl = em28xx_s_ctrl, 895 }; 896 897 static void size_to_scale(struct em28xx *dev, 898 unsigned int width, unsigned int height, 899 unsigned int *hscale, unsigned int *vscale) 900 { 901 unsigned int maxw = norm_maxw(dev); 902 unsigned int maxh = norm_maxh(dev); 903 904 *hscale = (((unsigned long)maxw) << 12) / width - 4096L; 905 if (*hscale > EM28XX_HVSCALE_MAX) 906 *hscale = EM28XX_HVSCALE_MAX; 907 908 *vscale = (((unsigned long)maxh) << 12) / height - 4096L; 909 if (*vscale > EM28XX_HVSCALE_MAX) 910 *vscale = EM28XX_HVSCALE_MAX; 911 } 912 913 static void scale_to_size(struct em28xx *dev, 914 unsigned int hscale, unsigned int vscale, 915 unsigned int *width, unsigned int *height) 916 { 917 unsigned int maxw = norm_maxw(dev); 918 unsigned int maxh = norm_maxh(dev); 919 920 *width = (((unsigned long)maxw) << 12) / (hscale + 4096L); 921 *height = (((unsigned long)maxh) << 12) / (vscale + 4096L); 922 } 923 924 /* ------------------------------------------------------------------ 925 IOCTL vidioc handling 926 ------------------------------------------------------------------*/ 927 928 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 929 struct v4l2_format *f) 930 { 931 struct em28xx_fh *fh = priv; 932 struct em28xx *dev = fh->dev; 933 934 f->fmt.pix.width = dev->width; 935 f->fmt.pix.height = dev->height; 936 f->fmt.pix.pixelformat = dev->format->fourcc; 937 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; 938 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; 939 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 940 941 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ 942 if (dev->progressive) 943 f->fmt.pix.field = V4L2_FIELD_NONE; 944 else 945 f->fmt.pix.field = dev->interlaced ? 946 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; 947 return 0; 948 } 949 950 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc) 951 { 952 unsigned int i; 953 954 for (i = 0; i < ARRAY_SIZE(format); i++) 955 if (format[i].fourcc == fourcc) 956 return &format[i]; 957 958 return NULL; 959 } 960 961 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 962 struct v4l2_format *f) 963 { 964 struct em28xx_fh *fh = priv; 965 struct em28xx *dev = fh->dev; 966 unsigned int width = f->fmt.pix.width; 967 unsigned int height = f->fmt.pix.height; 968 unsigned int maxw = norm_maxw(dev); 969 unsigned int maxh = norm_maxh(dev); 970 unsigned int hscale, vscale; 971 struct em28xx_fmt *fmt; 972 973 fmt = format_by_fourcc(f->fmt.pix.pixelformat); 974 if (!fmt) { 975 em28xx_videodbg("Fourcc format (%08x) invalid.\n", 976 f->fmt.pix.pixelformat); 977 return -EINVAL; 978 } 979 980 if (dev->board.is_em2800) { 981 /* the em2800 can only scale down to 50% */ 982 height = height > (3 * maxh / 4) ? maxh : maxh / 2; 983 width = width > (3 * maxw / 4) ? maxw : maxw / 2; 984 /* 985 * MaxPacketSize for em2800 is too small to capture at full 986 * resolution use half of maxw as the scaler can only scale 987 * to 50% 988 */ 989 if (width == maxw && height == maxh) 990 width /= 2; 991 } else { 992 /* width must even because of the YUYV format 993 height must be even because of interlacing */ 994 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 995 1, 0); 996 } 997 998 size_to_scale(dev, width, height, &hscale, &vscale); 999 scale_to_size(dev, hscale, vscale, &width, &height); 1000 1001 f->fmt.pix.width = width; 1002 f->fmt.pix.height = height; 1003 f->fmt.pix.pixelformat = fmt->fourcc; 1004 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3; 1005 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; 1006 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1007 if (dev->progressive) 1008 f->fmt.pix.field = V4L2_FIELD_NONE; 1009 else 1010 f->fmt.pix.field = dev->interlaced ? 1011 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; 1012 f->fmt.pix.priv = 0; 1013 1014 return 0; 1015 } 1016 1017 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc, 1018 unsigned width, unsigned height) 1019 { 1020 struct em28xx_fmt *fmt; 1021 1022 fmt = format_by_fourcc(fourcc); 1023 if (!fmt) 1024 return -EINVAL; 1025 1026 dev->format = fmt; 1027 dev->width = width; 1028 dev->height = height; 1029 1030 /* set new image size */ 1031 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); 1032 1033 em28xx_resolution_set(dev); 1034 1035 return 0; 1036 } 1037 1038 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 1039 struct v4l2_format *f) 1040 { 1041 struct em28xx *dev = video_drvdata(file); 1042 1043 if (dev->streaming_users > 0) 1044 return -EBUSY; 1045 1046 vidioc_try_fmt_vid_cap(file, priv, f); 1047 1048 return em28xx_set_video_format(dev, f->fmt.pix.pixelformat, 1049 f->fmt.pix.width, f->fmt.pix.height); 1050 } 1051 1052 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) 1053 { 1054 struct em28xx_fh *fh = priv; 1055 struct em28xx *dev = fh->dev; 1056 1057 *norm = dev->norm; 1058 1059 return 0; 1060 } 1061 1062 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm) 1063 { 1064 struct em28xx_fh *fh = priv; 1065 struct em28xx *dev = fh->dev; 1066 1067 v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm); 1068 1069 return 0; 1070 } 1071 1072 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) 1073 { 1074 struct em28xx_fh *fh = priv; 1075 struct em28xx *dev = fh->dev; 1076 struct v4l2_format f; 1077 1078 if (norm == dev->norm) 1079 return 0; 1080 1081 if (dev->streaming_users > 0) 1082 return -EBUSY; 1083 1084 dev->norm = norm; 1085 1086 /* Adjusts width/height, if needed */ 1087 f.fmt.pix.width = 720; 1088 f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576; 1089 vidioc_try_fmt_vid_cap(file, priv, &f); 1090 1091 /* set new image size */ 1092 dev->width = f.fmt.pix.width; 1093 dev->height = f.fmt.pix.height; 1094 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); 1095 1096 em28xx_resolution_set(dev); 1097 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); 1098 1099 return 0; 1100 } 1101 1102 static int vidioc_g_parm(struct file *file, void *priv, 1103 struct v4l2_streamparm *p) 1104 { 1105 struct em28xx_fh *fh = priv; 1106 struct em28xx *dev = fh->dev; 1107 int rc = 0; 1108 1109 p->parm.capture.readbuffers = EM28XX_MIN_BUF; 1110 if (dev->board.is_webcam) 1111 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0, 1112 video, g_parm, p); 1113 else 1114 v4l2_video_std_frame_period(dev->norm, 1115 &p->parm.capture.timeperframe); 1116 1117 return rc; 1118 } 1119 1120 static int vidioc_s_parm(struct file *file, void *priv, 1121 struct v4l2_streamparm *p) 1122 { 1123 struct em28xx_fh *fh = priv; 1124 struct em28xx *dev = fh->dev; 1125 1126 p->parm.capture.readbuffers = EM28XX_MIN_BUF; 1127 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p); 1128 } 1129 1130 static const char *iname[] = { 1131 [EM28XX_VMUX_COMPOSITE1] = "Composite1", 1132 [EM28XX_VMUX_COMPOSITE2] = "Composite2", 1133 [EM28XX_VMUX_COMPOSITE3] = "Composite3", 1134 [EM28XX_VMUX_COMPOSITE4] = "Composite4", 1135 [EM28XX_VMUX_SVIDEO] = "S-Video", 1136 [EM28XX_VMUX_TELEVISION] = "Television", 1137 [EM28XX_VMUX_CABLE] = "Cable TV", 1138 [EM28XX_VMUX_DVB] = "DVB", 1139 [EM28XX_VMUX_DEBUG] = "for debug only", 1140 }; 1141 1142 static int vidioc_enum_input(struct file *file, void *priv, 1143 struct v4l2_input *i) 1144 { 1145 struct em28xx_fh *fh = priv; 1146 struct em28xx *dev = fh->dev; 1147 unsigned int n; 1148 1149 n = i->index; 1150 if (n >= MAX_EM28XX_INPUT) 1151 return -EINVAL; 1152 if (0 == INPUT(n)->type) 1153 return -EINVAL; 1154 1155 i->index = n; 1156 i->type = V4L2_INPUT_TYPE_CAMERA; 1157 1158 strcpy(i->name, iname[INPUT(n)->type]); 1159 1160 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || 1161 (EM28XX_VMUX_CABLE == INPUT(n)->type)) 1162 i->type = V4L2_INPUT_TYPE_TUNER; 1163 1164 i->std = dev->vdev->tvnorms; 1165 /* webcams do not have the STD API */ 1166 if (dev->board.is_webcam) 1167 i->capabilities = 0; 1168 1169 return 0; 1170 } 1171 1172 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) 1173 { 1174 struct em28xx_fh *fh = priv; 1175 struct em28xx *dev = fh->dev; 1176 1177 *i = dev->ctl_input; 1178 1179 return 0; 1180 } 1181 1182 static int vidioc_s_input(struct file *file, void *priv, unsigned int i) 1183 { 1184 struct em28xx_fh *fh = priv; 1185 struct em28xx *dev = fh->dev; 1186 1187 if (i >= MAX_EM28XX_INPUT) 1188 return -EINVAL; 1189 if (0 == INPUT(i)->type) 1190 return -EINVAL; 1191 1192 video_mux(dev, i); 1193 return 0; 1194 } 1195 1196 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) 1197 { 1198 struct em28xx_fh *fh = priv; 1199 struct em28xx *dev = fh->dev; 1200 1201 switch (a->index) { 1202 case EM28XX_AMUX_VIDEO: 1203 strcpy(a->name, "Television"); 1204 break; 1205 case EM28XX_AMUX_LINE_IN: 1206 strcpy(a->name, "Line In"); 1207 break; 1208 case EM28XX_AMUX_VIDEO2: 1209 strcpy(a->name, "Television alt"); 1210 break; 1211 case EM28XX_AMUX_PHONE: 1212 strcpy(a->name, "Phone"); 1213 break; 1214 case EM28XX_AMUX_MIC: 1215 strcpy(a->name, "Mic"); 1216 break; 1217 case EM28XX_AMUX_CD: 1218 strcpy(a->name, "CD"); 1219 break; 1220 case EM28XX_AMUX_AUX: 1221 strcpy(a->name, "Aux"); 1222 break; 1223 case EM28XX_AMUX_PCM_OUT: 1224 strcpy(a->name, "PCM"); 1225 break; 1226 default: 1227 return -EINVAL; 1228 } 1229 1230 a->index = dev->ctl_ainput; 1231 a->capability = V4L2_AUDCAP_STEREO; 1232 1233 return 0; 1234 } 1235 1236 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a) 1237 { 1238 struct em28xx_fh *fh = priv; 1239 struct em28xx *dev = fh->dev; 1240 1241 if (a->index >= MAX_EM28XX_INPUT) 1242 return -EINVAL; 1243 if (0 == INPUT(a->index)->type) 1244 return -EINVAL; 1245 1246 dev->ctl_ainput = INPUT(a->index)->amux; 1247 dev->ctl_aoutput = INPUT(a->index)->aout; 1248 1249 if (!dev->ctl_aoutput) 1250 dev->ctl_aoutput = EM28XX_AOUT_MASTER; 1251 1252 return 0; 1253 } 1254 1255 static int vidioc_g_tuner(struct file *file, void *priv, 1256 struct v4l2_tuner *t) 1257 { 1258 struct em28xx_fh *fh = priv; 1259 struct em28xx *dev = fh->dev; 1260 1261 if (0 != t->index) 1262 return -EINVAL; 1263 1264 strcpy(t->name, "Tuner"); 1265 1266 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); 1267 return 0; 1268 } 1269 1270 static int vidioc_s_tuner(struct file *file, void *priv, 1271 const struct v4l2_tuner *t) 1272 { 1273 struct em28xx_fh *fh = priv; 1274 struct em28xx *dev = fh->dev; 1275 1276 if (0 != t->index) 1277 return -EINVAL; 1278 1279 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); 1280 return 0; 1281 } 1282 1283 static int vidioc_g_frequency(struct file *file, void *priv, 1284 struct v4l2_frequency *f) 1285 { 1286 struct em28xx_fh *fh = priv; 1287 struct em28xx *dev = fh->dev; 1288 1289 if (0 != f->tuner) 1290 return -EINVAL; 1291 1292 f->frequency = dev->ctl_freq; 1293 return 0; 1294 } 1295 1296 static int vidioc_s_frequency(struct file *file, void *priv, 1297 const struct v4l2_frequency *f) 1298 { 1299 struct v4l2_frequency new_freq = *f; 1300 struct em28xx_fh *fh = priv; 1301 struct em28xx *dev = fh->dev; 1302 1303 if (0 != f->tuner) 1304 return -EINVAL; 1305 1306 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f); 1307 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq); 1308 dev->ctl_freq = new_freq.frequency; 1309 1310 return 0; 1311 } 1312 1313 #ifdef CONFIG_VIDEO_ADV_DEBUG 1314 static int vidioc_g_chip_info(struct file *file, void *priv, 1315 struct v4l2_dbg_chip_info *chip) 1316 { 1317 struct em28xx_fh *fh = priv; 1318 struct em28xx *dev = fh->dev; 1319 1320 if (chip->match.addr > 1) 1321 return -EINVAL; 1322 if (chip->match.addr == 1) 1323 strlcpy(chip->name, "ac97", sizeof(chip->name)); 1324 else 1325 strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name)); 1326 return 0; 1327 } 1328 1329 static int em28xx_reg_len(int reg) 1330 { 1331 switch (reg) { 1332 case EM28XX_R40_AC97LSB: 1333 case EM28XX_R30_HSCALELOW: 1334 case EM28XX_R32_VSCALELOW: 1335 return 2; 1336 default: 1337 return 1; 1338 } 1339 } 1340 1341 static int vidioc_g_register(struct file *file, void *priv, 1342 struct v4l2_dbg_register *reg) 1343 { 1344 struct em28xx_fh *fh = priv; 1345 struct em28xx *dev = fh->dev; 1346 int ret; 1347 1348 if (reg->match.addr > 1) 1349 return -EINVAL; 1350 if (reg->match.addr) { 1351 ret = em28xx_read_ac97(dev, reg->reg); 1352 if (ret < 0) 1353 return ret; 1354 1355 reg->val = ret; 1356 reg->size = 1; 1357 return 0; 1358 } 1359 1360 /* Match host */ 1361 reg->size = em28xx_reg_len(reg->reg); 1362 if (reg->size == 1) { 1363 ret = em28xx_read_reg(dev, reg->reg); 1364 1365 if (ret < 0) 1366 return ret; 1367 1368 reg->val = ret; 1369 } else { 1370 __le16 val = 0; 1371 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, 1372 reg->reg, (char *)&val, 2); 1373 if (ret < 0) 1374 return ret; 1375 1376 reg->val = le16_to_cpu(val); 1377 } 1378 1379 return 0; 1380 } 1381 1382 static int vidioc_s_register(struct file *file, void *priv, 1383 const struct v4l2_dbg_register *reg) 1384 { 1385 struct em28xx_fh *fh = priv; 1386 struct em28xx *dev = fh->dev; 1387 __le16 buf; 1388 1389 if (reg->match.addr > 1) 1390 return -EINVAL; 1391 if (reg->match.addr) 1392 return em28xx_write_ac97(dev, reg->reg, reg->val); 1393 1394 /* Match host */ 1395 buf = cpu_to_le16(reg->val); 1396 1397 return em28xx_write_regs(dev, reg->reg, (char *)&buf, 1398 em28xx_reg_len(reg->reg)); 1399 } 1400 #endif 1401 1402 1403 static int vidioc_querycap(struct file *file, void *priv, 1404 struct v4l2_capability *cap) 1405 { 1406 struct video_device *vdev = video_devdata(file); 1407 struct em28xx_fh *fh = priv; 1408 struct em28xx *dev = fh->dev; 1409 1410 strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); 1411 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); 1412 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 1413 1414 if (vdev->vfl_type == VFL_TYPE_GRABBER) 1415 cap->device_caps = V4L2_CAP_READWRITE | 1416 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 1417 else if (vdev->vfl_type == VFL_TYPE_RADIO) 1418 cap->device_caps = V4L2_CAP_RADIO; 1419 else 1420 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE; 1421 1422 if (dev->audio_mode.has_audio) 1423 cap->device_caps |= V4L2_CAP_AUDIO; 1424 1425 if (dev->tuner_type != TUNER_ABSENT) 1426 cap->device_caps |= V4L2_CAP_TUNER; 1427 1428 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS | 1429 V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 1430 if (dev->vbi_dev) 1431 cap->capabilities |= V4L2_CAP_VBI_CAPTURE; 1432 if (dev->radio_dev) 1433 cap->capabilities |= V4L2_CAP_RADIO; 1434 return 0; 1435 } 1436 1437 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 1438 struct v4l2_fmtdesc *f) 1439 { 1440 if (unlikely(f->index >= ARRAY_SIZE(format))) 1441 return -EINVAL; 1442 1443 strlcpy(f->description, format[f->index].name, sizeof(f->description)); 1444 f->pixelformat = format[f->index].fourcc; 1445 1446 return 0; 1447 } 1448 1449 static int vidioc_enum_framesizes(struct file *file, void *priv, 1450 struct v4l2_frmsizeenum *fsize) 1451 { 1452 struct em28xx_fh *fh = priv; 1453 struct em28xx *dev = fh->dev; 1454 struct em28xx_fmt *fmt; 1455 unsigned int maxw = norm_maxw(dev); 1456 unsigned int maxh = norm_maxh(dev); 1457 1458 fmt = format_by_fourcc(fsize->pixel_format); 1459 if (!fmt) { 1460 em28xx_videodbg("Fourcc format (%08x) invalid.\n", 1461 fsize->pixel_format); 1462 return -EINVAL; 1463 } 1464 1465 if (dev->board.is_em2800) { 1466 if (fsize->index > 1) 1467 return -EINVAL; 1468 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; 1469 fsize->discrete.width = maxw / (1 + fsize->index); 1470 fsize->discrete.height = maxh / (1 + fsize->index); 1471 return 0; 1472 } 1473 1474 if (fsize->index != 0) 1475 return -EINVAL; 1476 1477 /* Report a continuous range */ 1478 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; 1479 scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX, 1480 &fsize->stepwise.min_width, &fsize->stepwise.min_height); 1481 if (fsize->stepwise.min_width < 48) 1482 fsize->stepwise.min_width = 48; 1483 if (fsize->stepwise.min_height < 38) 1484 fsize->stepwise.min_height = 38; 1485 fsize->stepwise.max_width = maxw; 1486 fsize->stepwise.max_height = maxh; 1487 fsize->stepwise.step_width = 1; 1488 fsize->stepwise.step_height = 1; 1489 return 0; 1490 } 1491 1492 /* RAW VBI ioctls */ 1493 1494 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, 1495 struct v4l2_format *format) 1496 { 1497 struct em28xx_fh *fh = priv; 1498 struct em28xx *dev = fh->dev; 1499 1500 format->fmt.vbi.samples_per_line = dev->vbi_width; 1501 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; 1502 format->fmt.vbi.offset = 0; 1503 format->fmt.vbi.flags = 0; 1504 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; 1505 format->fmt.vbi.count[0] = dev->vbi_height; 1506 format->fmt.vbi.count[1] = dev->vbi_height; 1507 memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved)); 1508 1509 /* Varies by video standard (NTSC, PAL, etc.) */ 1510 if (dev->norm & V4L2_STD_525_60) { 1511 /* NTSC */ 1512 format->fmt.vbi.start[0] = 10; 1513 format->fmt.vbi.start[1] = 273; 1514 } else if (dev->norm & V4L2_STD_625_50) { 1515 /* PAL */ 1516 format->fmt.vbi.start[0] = 6; 1517 format->fmt.vbi.start[1] = 318; 1518 } 1519 1520 return 0; 1521 } 1522 1523 /* ----------------------------------------------------------- */ 1524 /* RADIO ESPECIFIC IOCTLS */ 1525 /* ----------------------------------------------------------- */ 1526 1527 static int radio_g_tuner(struct file *file, void *priv, 1528 struct v4l2_tuner *t) 1529 { 1530 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; 1531 1532 if (unlikely(t->index > 0)) 1533 return -EINVAL; 1534 1535 strcpy(t->name, "Radio"); 1536 1537 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); 1538 1539 return 0; 1540 } 1541 1542 static int radio_s_tuner(struct file *file, void *priv, 1543 const struct v4l2_tuner *t) 1544 { 1545 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; 1546 1547 if (0 != t->index) 1548 return -EINVAL; 1549 1550 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); 1551 1552 return 0; 1553 } 1554 1555 /* 1556 * em28xx_v4l2_open() 1557 * inits the device and starts isoc transfer 1558 */ 1559 static int em28xx_v4l2_open(struct file *filp) 1560 { 1561 struct video_device *vdev = video_devdata(filp); 1562 struct em28xx *dev = video_drvdata(filp); 1563 enum v4l2_buf_type fh_type = 0; 1564 struct em28xx_fh *fh; 1565 1566 switch (vdev->vfl_type) { 1567 case VFL_TYPE_GRABBER: 1568 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1569 break; 1570 case VFL_TYPE_VBI: 1571 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; 1572 break; 1573 } 1574 1575 em28xx_videodbg("open dev=%s type=%s users=%d\n", 1576 video_device_node_name(vdev), v4l2_type_names[fh_type], 1577 dev->users); 1578 1579 1580 if (mutex_lock_interruptible(&dev->lock)) 1581 return -ERESTARTSYS; 1582 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); 1583 if (!fh) { 1584 em28xx_errdev("em28xx-video.c: Out of memory?!\n"); 1585 mutex_unlock(&dev->lock); 1586 return -ENOMEM; 1587 } 1588 v4l2_fh_init(&fh->fh, vdev); 1589 fh->dev = dev; 1590 fh->type = fh_type; 1591 filp->private_data = fh; 1592 1593 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { 1594 em28xx_set_mode(dev, EM28XX_ANALOG_MODE); 1595 em28xx_resolution_set(dev); 1596 1597 /* Needed, since GPIO might have disabled power of 1598 some i2c device 1599 */ 1600 em28xx_wake_i2c(dev); 1601 1602 } 1603 1604 if (vdev->vfl_type == VFL_TYPE_RADIO) { 1605 em28xx_videodbg("video_open: setting radio device\n"); 1606 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio); 1607 } 1608 1609 dev->users++; 1610 1611 mutex_unlock(&dev->lock); 1612 v4l2_fh_add(&fh->fh); 1613 1614 return 0; 1615 } 1616 1617 /* 1618 * em28xx_realease_resources() 1619 * unregisters the v4l2,i2c and usb devices 1620 * called when the device gets disconected or at module unload 1621 */ 1622 void em28xx_release_analog_resources(struct em28xx *dev) 1623 { 1624 1625 /*FIXME: I2C IR should be disconnected */ 1626 1627 if (dev->radio_dev) { 1628 if (video_is_registered(dev->radio_dev)) 1629 video_unregister_device(dev->radio_dev); 1630 else 1631 video_device_release(dev->radio_dev); 1632 dev->radio_dev = NULL; 1633 } 1634 if (dev->vbi_dev) { 1635 em28xx_info("V4L2 device %s deregistered\n", 1636 video_device_node_name(dev->vbi_dev)); 1637 if (video_is_registered(dev->vbi_dev)) 1638 video_unregister_device(dev->vbi_dev); 1639 else 1640 video_device_release(dev->vbi_dev); 1641 dev->vbi_dev = NULL; 1642 } 1643 if (dev->vdev) { 1644 em28xx_info("V4L2 device %s deregistered\n", 1645 video_device_node_name(dev->vdev)); 1646 if (video_is_registered(dev->vdev)) 1647 video_unregister_device(dev->vdev); 1648 else 1649 video_device_release(dev->vdev); 1650 dev->vdev = NULL; 1651 } 1652 } 1653 1654 /* 1655 * em28xx_v4l2_close() 1656 * stops streaming and deallocates all resources allocated by the v4l2 1657 * calls and ioctls 1658 */ 1659 static int em28xx_v4l2_close(struct file *filp) 1660 { 1661 struct em28xx_fh *fh = filp->private_data; 1662 struct em28xx *dev = fh->dev; 1663 int errCode; 1664 1665 em28xx_videodbg("users=%d\n", dev->users); 1666 1667 mutex_lock(&dev->lock); 1668 vb2_fop_release(filp); 1669 1670 if (dev->users == 1) { 1671 /* the device is already disconnect, 1672 free the remaining resources */ 1673 if (dev->disconnected) { 1674 em28xx_release_resources(dev); 1675 kfree(dev->alt_max_pkt_size_isoc); 1676 mutex_unlock(&dev->lock); 1677 kfree(dev); 1678 return 0; 1679 } 1680 1681 /* Save some power by putting tuner to sleep */ 1682 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0); 1683 1684 /* do this before setting alternate! */ 1685 em28xx_set_mode(dev, EM28XX_SUSPEND); 1686 1687 /* set alternate 0 */ 1688 dev->alt = 0; 1689 em28xx_videodbg("setting alternate 0\n"); 1690 errCode = usb_set_interface(dev->udev, 0, 0); 1691 if (errCode < 0) { 1692 em28xx_errdev("cannot change alternate number to " 1693 "0 (error=%i)\n", errCode); 1694 } 1695 } 1696 1697 dev->users--; 1698 mutex_unlock(&dev->lock); 1699 return 0; 1700 } 1701 1702 static const struct v4l2_file_operations em28xx_v4l_fops = { 1703 .owner = THIS_MODULE, 1704 .open = em28xx_v4l2_open, 1705 .release = em28xx_v4l2_close, 1706 .read = vb2_fop_read, 1707 .poll = vb2_fop_poll, 1708 .mmap = vb2_fop_mmap, 1709 .unlocked_ioctl = video_ioctl2, 1710 }; 1711 1712 static const struct v4l2_ioctl_ops video_ioctl_ops = { 1713 .vidioc_querycap = vidioc_querycap, 1714 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 1715 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1716 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, 1717 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 1718 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 1719 .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 1720 .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 1721 .vidioc_enum_framesizes = vidioc_enum_framesizes, 1722 .vidioc_g_audio = vidioc_g_audio, 1723 .vidioc_s_audio = vidioc_s_audio, 1724 1725 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1726 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1727 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1728 .vidioc_querybuf = vb2_ioctl_querybuf, 1729 .vidioc_qbuf = vb2_ioctl_qbuf, 1730 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1731 1732 .vidioc_g_std = vidioc_g_std, 1733 .vidioc_querystd = vidioc_querystd, 1734 .vidioc_s_std = vidioc_s_std, 1735 .vidioc_g_parm = vidioc_g_parm, 1736 .vidioc_s_parm = vidioc_s_parm, 1737 .vidioc_enum_input = vidioc_enum_input, 1738 .vidioc_g_input = vidioc_g_input, 1739 .vidioc_s_input = vidioc_s_input, 1740 .vidioc_streamon = vb2_ioctl_streamon, 1741 .vidioc_streamoff = vb2_ioctl_streamoff, 1742 .vidioc_g_tuner = vidioc_g_tuner, 1743 .vidioc_s_tuner = vidioc_s_tuner, 1744 .vidioc_g_frequency = vidioc_g_frequency, 1745 .vidioc_s_frequency = vidioc_s_frequency, 1746 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1747 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1748 #ifdef CONFIG_VIDEO_ADV_DEBUG 1749 .vidioc_g_chip_info = vidioc_g_chip_info, 1750 .vidioc_g_register = vidioc_g_register, 1751 .vidioc_s_register = vidioc_s_register, 1752 #endif 1753 }; 1754 1755 static const struct video_device em28xx_video_template = { 1756 .fops = &em28xx_v4l_fops, 1757 .release = video_device_release_empty, 1758 .ioctl_ops = &video_ioctl_ops, 1759 1760 .tvnorms = V4L2_STD_ALL, 1761 }; 1762 1763 static const struct v4l2_file_operations radio_fops = { 1764 .owner = THIS_MODULE, 1765 .open = em28xx_v4l2_open, 1766 .release = em28xx_v4l2_close, 1767 .unlocked_ioctl = video_ioctl2, 1768 }; 1769 1770 static const struct v4l2_ioctl_ops radio_ioctl_ops = { 1771 .vidioc_querycap = vidioc_querycap, 1772 .vidioc_g_tuner = radio_g_tuner, 1773 .vidioc_s_tuner = radio_s_tuner, 1774 .vidioc_g_frequency = vidioc_g_frequency, 1775 .vidioc_s_frequency = vidioc_s_frequency, 1776 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1777 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1778 #ifdef CONFIG_VIDEO_ADV_DEBUG 1779 .vidioc_g_chip_info = vidioc_g_chip_info, 1780 .vidioc_g_register = vidioc_g_register, 1781 .vidioc_s_register = vidioc_s_register, 1782 #endif 1783 }; 1784 1785 static struct video_device em28xx_radio_template = { 1786 .name = "em28xx-radio", 1787 .fops = &radio_fops, 1788 .ioctl_ops = &radio_ioctl_ops, 1789 }; 1790 1791 /******************************** usb interface ******************************/ 1792 1793 1794 1795 static struct video_device *em28xx_vdev_init(struct em28xx *dev, 1796 const struct video_device *template, 1797 const char *type_name) 1798 { 1799 struct video_device *vfd; 1800 1801 vfd = video_device_alloc(); 1802 if (NULL == vfd) 1803 return NULL; 1804 1805 *vfd = *template; 1806 vfd->v4l2_dev = &dev->v4l2_dev; 1807 vfd->debug = video_debug; 1808 vfd->lock = &dev->lock; 1809 set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); 1810 if (dev->board.is_webcam) 1811 vfd->tvnorms = 0; 1812 1813 snprintf(vfd->name, sizeof(vfd->name), "%s %s", 1814 dev->name, type_name); 1815 1816 video_set_drvdata(vfd, dev); 1817 return vfd; 1818 } 1819 1820 int em28xx_register_analog_devices(struct em28xx *dev) 1821 { 1822 u8 val; 1823 int ret; 1824 unsigned int maxw; 1825 1826 printk(KERN_INFO "%s: v4l2 driver version %s\n", 1827 dev->name, EM28XX_VERSION); 1828 1829 /* set default norm */ 1830 dev->norm = V4L2_STD_PAL; 1831 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); 1832 dev->interlaced = EM28XX_INTERLACED_DEFAULT; 1833 1834 /* Analog specific initialization */ 1835 dev->format = &format[0]; 1836 1837 maxw = norm_maxw(dev); 1838 /* MaxPacketSize for em2800 is too small to capture at full resolution 1839 * use half of maxw as the scaler can only scale to 50% */ 1840 if (dev->board.is_em2800) 1841 maxw /= 2; 1842 1843 em28xx_set_video_format(dev, format[0].fourcc, 1844 maxw, norm_maxh(dev)); 1845 1846 video_mux(dev, 0); 1847 1848 /* Audio defaults */ 1849 dev->mute = 1; 1850 dev->volume = 0x1f; 1851 1852 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */ 1853 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK); 1854 em28xx_write_reg(dev, EM28XX_R0F_XCLK, 1855 (EM28XX_XCLK_AUDIO_UNMUTE | val)); 1856 1857 em28xx_set_outfmt(dev); 1858 em28xx_compression_disable(dev); 1859 1860 /* Add image controls */ 1861 /* NOTE: at this point, the subdevices are already registered, so bridge 1862 * controls are only added/enabled when no subdevice provides them */ 1863 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_CONTRAST)) 1864 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1865 V4L2_CID_CONTRAST, 1866 0, 0x1f, 1, CONTRAST_DEFAULT); 1867 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BRIGHTNESS)) 1868 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1869 V4L2_CID_BRIGHTNESS, 1870 -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT); 1871 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SATURATION)) 1872 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1873 V4L2_CID_SATURATION, 1874 0, 0x1f, 1, SATURATION_DEFAULT); 1875 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BLUE_BALANCE)) 1876 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1877 V4L2_CID_BLUE_BALANCE, 1878 -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT); 1879 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_RED_BALANCE)) 1880 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1881 V4L2_CID_RED_BALANCE, 1882 -0x30, 0x30, 1, RED_BALANCE_DEFAULT); 1883 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SHARPNESS)) 1884 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1885 V4L2_CID_SHARPNESS, 1886 0, 0x0f, 1, SHARPNESS_DEFAULT); 1887 1888 /* Reset image controls */ 1889 em28xx_colorlevels_set_default(dev); 1890 v4l2_ctrl_handler_setup(&dev->ctrl_handler); 1891 if (dev->ctrl_handler.error) 1892 return dev->ctrl_handler.error; 1893 1894 /* allocate and fill video video_device struct */ 1895 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video"); 1896 if (!dev->vdev) { 1897 em28xx_errdev("cannot allocate video_device.\n"); 1898 return -ENODEV; 1899 } 1900 dev->vdev->queue = &dev->vb_vidq; 1901 dev->vdev->queue->lock = &dev->vb_queue_lock; 1902 1903 /* disable inapplicable ioctls */ 1904 if (dev->board.is_webcam) { 1905 v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD); 1906 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD); 1907 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD); 1908 } else { 1909 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM); 1910 } 1911 if (dev->tuner_type == TUNER_ABSENT) { 1912 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_TUNER); 1913 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_TUNER); 1914 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_FREQUENCY); 1915 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_FREQUENCY); 1916 } 1917 if (!dev->audio_mode.has_audio) { 1918 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_AUDIO); 1919 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_AUDIO); 1920 } 1921 1922 /* register v4l2 video video_device */ 1923 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER, 1924 video_nr[dev->devno]); 1925 if (ret) { 1926 em28xx_errdev("unable to register video device (error=%i).\n", 1927 ret); 1928 return ret; 1929 } 1930 1931 /* Allocate and fill vbi video_device struct */ 1932 if (em28xx_vbi_supported(dev) == 1) { 1933 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, 1934 "vbi"); 1935 1936 dev->vbi_dev->queue = &dev->vb_vbiq; 1937 dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock; 1938 1939 /* disable inapplicable ioctls */ 1940 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM); 1941 if (dev->tuner_type == TUNER_ABSENT) { 1942 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER); 1943 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER); 1944 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_FREQUENCY); 1945 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_FREQUENCY); 1946 } 1947 if (!dev->audio_mode.has_audio) { 1948 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_AUDIO); 1949 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_AUDIO); 1950 } 1951 1952 /* register v4l2 vbi video_device */ 1953 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, 1954 vbi_nr[dev->devno]); 1955 if (ret < 0) { 1956 em28xx_errdev("unable to register vbi device\n"); 1957 return ret; 1958 } 1959 } 1960 1961 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { 1962 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, 1963 "radio"); 1964 if (!dev->radio_dev) { 1965 em28xx_errdev("cannot allocate video_device.\n"); 1966 return -ENODEV; 1967 } 1968 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO, 1969 radio_nr[dev->devno]); 1970 if (ret < 0) { 1971 em28xx_errdev("can't register radio device\n"); 1972 return ret; 1973 } 1974 em28xx_info("Registered radio device as %s\n", 1975 video_device_node_name(dev->radio_dev)); 1976 } 1977 1978 em28xx_info("V4L2 video device registered as %s\n", 1979 video_device_node_name(dev->vdev)); 1980 1981 if (dev->vbi_dev) 1982 em28xx_info("V4L2 VBI device registered as %s\n", 1983 video_device_node_name(dev->vbi_dev)); 1984 1985 return 0; 1986 } 1987