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 goto fail; 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 fail: 679 return rc; 680 } 681 682 static int em28xx_stop_streaming(struct vb2_queue *vq) 683 { 684 struct em28xx *dev = vb2_get_drv_priv(vq); 685 struct em28xx_dmaqueue *vidq = &dev->vidq; 686 unsigned long flags = 0; 687 688 em28xx_videodbg("%s\n", __func__); 689 690 res_free(dev, vq->type); 691 692 if (dev->streaming_users-- == 1) { 693 /* Last active user, so shutdown all the URBS */ 694 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); 695 } 696 697 spin_lock_irqsave(&dev->slock, flags); 698 while (!list_empty(&vidq->active)) { 699 struct em28xx_buffer *buf; 700 buf = list_entry(vidq->active.next, struct em28xx_buffer, list); 701 list_del(&buf->list); 702 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 703 } 704 dev->usb_ctl.vid_buf = NULL; 705 spin_unlock_irqrestore(&dev->slock, flags); 706 707 return 0; 708 } 709 710 int em28xx_stop_vbi_streaming(struct vb2_queue *vq) 711 { 712 struct em28xx *dev = vb2_get_drv_priv(vq); 713 struct em28xx_dmaqueue *vbiq = &dev->vbiq; 714 unsigned long flags = 0; 715 716 em28xx_videodbg("%s\n", __func__); 717 718 res_free(dev, vq->type); 719 720 if (dev->streaming_users-- == 1) { 721 /* Last active user, so shutdown all the URBS */ 722 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); 723 } 724 725 spin_lock_irqsave(&dev->slock, flags); 726 while (!list_empty(&vbiq->active)) { 727 struct em28xx_buffer *buf; 728 buf = list_entry(vbiq->active.next, struct em28xx_buffer, list); 729 list_del(&buf->list); 730 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 731 } 732 dev->usb_ctl.vbi_buf = NULL; 733 spin_unlock_irqrestore(&dev->slock, flags); 734 735 return 0; 736 } 737 738 static void 739 buffer_queue(struct vb2_buffer *vb) 740 { 741 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue); 742 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb); 743 struct em28xx_dmaqueue *vidq = &dev->vidq; 744 unsigned long flags = 0; 745 746 em28xx_videodbg("%s\n", __func__); 747 buf->mem = vb2_plane_vaddr(vb, 0); 748 buf->length = vb2_plane_size(vb, 0); 749 750 spin_lock_irqsave(&dev->slock, flags); 751 list_add_tail(&buf->list, &vidq->active); 752 spin_unlock_irqrestore(&dev->slock, flags); 753 } 754 755 static struct vb2_ops em28xx_video_qops = { 756 .queue_setup = queue_setup, 757 .buf_prepare = buffer_prepare, 758 .buf_queue = buffer_queue, 759 .start_streaming = em28xx_start_analog_streaming, 760 .stop_streaming = em28xx_stop_streaming, 761 .wait_prepare = vb2_ops_wait_prepare, 762 .wait_finish = vb2_ops_wait_finish, 763 }; 764 765 int em28xx_vb2_setup(struct em28xx *dev) 766 { 767 int rc; 768 struct vb2_queue *q; 769 770 /* Setup Videobuf2 for Video capture */ 771 q = &dev->vb_vidq; 772 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 773 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 774 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 775 q->drv_priv = dev; 776 q->buf_struct_size = sizeof(struct em28xx_buffer); 777 q->ops = &em28xx_video_qops; 778 q->mem_ops = &vb2_vmalloc_memops; 779 780 rc = vb2_queue_init(q); 781 if (rc < 0) 782 return rc; 783 784 /* Setup Videobuf2 for VBI capture */ 785 q = &dev->vb_vbiq; 786 q->type = V4L2_BUF_TYPE_VBI_CAPTURE; 787 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR; 788 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 789 q->drv_priv = dev; 790 q->buf_struct_size = sizeof(struct em28xx_buffer); 791 q->ops = &em28xx_vbi_qops; 792 q->mem_ops = &vb2_vmalloc_memops; 793 794 rc = vb2_queue_init(q); 795 if (rc < 0) 796 return rc; 797 798 return 0; 799 } 800 801 /********************* v4l2 interface **************************************/ 802 803 static void video_mux(struct em28xx *dev, int index) 804 { 805 dev->ctl_input = index; 806 dev->ctl_ainput = INPUT(index)->amux; 807 dev->ctl_aoutput = INPUT(index)->aout; 808 809 if (!dev->ctl_aoutput) 810 dev->ctl_aoutput = EM28XX_AOUT_MASTER; 811 812 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing, 813 INPUT(index)->vmux, 0, 0); 814 815 if (dev->board.has_msp34xx) { 816 if (dev->i2s_speed) { 817 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, 818 s_i2s_clock_freq, dev->i2s_speed); 819 } 820 /* Note: this is msp3400 specific */ 821 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing, 822 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0); 823 } 824 825 if (dev->board.adecoder != EM28XX_NOADECODER) { 826 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing, 827 dev->ctl_ainput, dev->ctl_aoutput, 0); 828 } 829 830 em28xx_audio_analog_set(dev); 831 } 832 833 void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv) 834 { 835 struct em28xx *dev = priv; 836 837 /* 838 * In the case of non-AC97 volume controls, we still need 839 * to do some setups at em28xx, in order to mute/unmute 840 * and to adjust audio volume. However, the value ranges 841 * should be checked by the corresponding V4L subdriver. 842 */ 843 switch (ctrl->id) { 844 case V4L2_CID_AUDIO_MUTE: 845 dev->mute = ctrl->val; 846 em28xx_audio_analog_set(dev); 847 break; 848 case V4L2_CID_AUDIO_VOLUME: 849 dev->volume = ctrl->val; 850 em28xx_audio_analog_set(dev); 851 break; 852 } 853 } 854 855 static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl) 856 { 857 struct em28xx *dev = container_of(ctrl->handler, struct em28xx, ctrl_handler); 858 int ret = -EINVAL; 859 860 switch (ctrl->id) { 861 case V4L2_CID_AUDIO_MUTE: 862 dev->mute = ctrl->val; 863 ret = em28xx_audio_analog_set(dev); 864 break; 865 case V4L2_CID_AUDIO_VOLUME: 866 dev->volume = ctrl->val; 867 ret = em28xx_audio_analog_set(dev); 868 break; 869 case V4L2_CID_CONTRAST: 870 ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val); 871 break; 872 case V4L2_CID_BRIGHTNESS: 873 ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val); 874 break; 875 case V4L2_CID_SATURATION: 876 ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val); 877 break; 878 case V4L2_CID_BLUE_BALANCE: 879 ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val); 880 break; 881 case V4L2_CID_RED_BALANCE: 882 ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val); 883 break; 884 case V4L2_CID_SHARPNESS: 885 ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val); 886 break; 887 } 888 889 return (ret < 0) ? ret : 0; 890 } 891 892 const struct v4l2_ctrl_ops em28xx_ctrl_ops = { 893 .s_ctrl = em28xx_s_ctrl, 894 }; 895 896 static void size_to_scale(struct em28xx *dev, 897 unsigned int width, unsigned int height, 898 unsigned int *hscale, unsigned int *vscale) 899 { 900 unsigned int maxw = norm_maxw(dev); 901 unsigned int maxh = norm_maxh(dev); 902 903 *hscale = (((unsigned long)maxw) << 12) / width - 4096L; 904 if (*hscale > EM28XX_HVSCALE_MAX) 905 *hscale = EM28XX_HVSCALE_MAX; 906 907 *vscale = (((unsigned long)maxh) << 12) / height - 4096L; 908 if (*vscale > EM28XX_HVSCALE_MAX) 909 *vscale = EM28XX_HVSCALE_MAX; 910 } 911 912 static void scale_to_size(struct em28xx *dev, 913 unsigned int hscale, unsigned int vscale, 914 unsigned int *width, unsigned int *height) 915 { 916 unsigned int maxw = norm_maxw(dev); 917 unsigned int maxh = norm_maxh(dev); 918 919 *width = (((unsigned long)maxw) << 12) / (hscale + 4096L); 920 *height = (((unsigned long)maxh) << 12) / (vscale + 4096L); 921 } 922 923 /* ------------------------------------------------------------------ 924 IOCTL vidioc handling 925 ------------------------------------------------------------------*/ 926 927 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 928 struct v4l2_format *f) 929 { 930 struct em28xx_fh *fh = priv; 931 struct em28xx *dev = fh->dev; 932 933 f->fmt.pix.width = dev->width; 934 f->fmt.pix.height = dev->height; 935 f->fmt.pix.pixelformat = dev->format->fourcc; 936 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; 937 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; 938 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 939 940 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ 941 if (dev->progressive) 942 f->fmt.pix.field = V4L2_FIELD_NONE; 943 else 944 f->fmt.pix.field = dev->interlaced ? 945 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; 946 return 0; 947 } 948 949 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc) 950 { 951 unsigned int i; 952 953 for (i = 0; i < ARRAY_SIZE(format); i++) 954 if (format[i].fourcc == fourcc) 955 return &format[i]; 956 957 return NULL; 958 } 959 960 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 961 struct v4l2_format *f) 962 { 963 struct em28xx_fh *fh = priv; 964 struct em28xx *dev = fh->dev; 965 unsigned int width = f->fmt.pix.width; 966 unsigned int height = f->fmt.pix.height; 967 unsigned int maxw = norm_maxw(dev); 968 unsigned int maxh = norm_maxh(dev); 969 unsigned int hscale, vscale; 970 struct em28xx_fmt *fmt; 971 972 fmt = format_by_fourcc(f->fmt.pix.pixelformat); 973 if (!fmt) { 974 em28xx_videodbg("Fourcc format (%08x) invalid.\n", 975 f->fmt.pix.pixelformat); 976 return -EINVAL; 977 } 978 979 if (dev->board.is_em2800) { 980 /* the em2800 can only scale down to 50% */ 981 height = height > (3 * maxh / 4) ? maxh : maxh / 2; 982 width = width > (3 * maxw / 4) ? maxw : maxw / 2; 983 /* 984 * MaxPacketSize for em2800 is too small to capture at full 985 * resolution use half of maxw as the scaler can only scale 986 * to 50% 987 */ 988 if (width == maxw && height == maxh) 989 width /= 2; 990 } else { 991 /* width must even because of the YUYV format 992 height must be even because of interlacing */ 993 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 994 1, 0); 995 } 996 997 size_to_scale(dev, width, height, &hscale, &vscale); 998 scale_to_size(dev, hscale, vscale, &width, &height); 999 1000 f->fmt.pix.width = width; 1001 f->fmt.pix.height = height; 1002 f->fmt.pix.pixelformat = fmt->fourcc; 1003 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3; 1004 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; 1005 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1006 if (dev->progressive) 1007 f->fmt.pix.field = V4L2_FIELD_NONE; 1008 else 1009 f->fmt.pix.field = dev->interlaced ? 1010 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; 1011 f->fmt.pix.priv = 0; 1012 1013 return 0; 1014 } 1015 1016 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc, 1017 unsigned width, unsigned height) 1018 { 1019 struct em28xx_fmt *fmt; 1020 1021 fmt = format_by_fourcc(fourcc); 1022 if (!fmt) 1023 return -EINVAL; 1024 1025 dev->format = fmt; 1026 dev->width = width; 1027 dev->height = height; 1028 1029 /* set new image size */ 1030 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); 1031 1032 em28xx_resolution_set(dev); 1033 1034 return 0; 1035 } 1036 1037 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 1038 struct v4l2_format *f) 1039 { 1040 struct em28xx *dev = video_drvdata(file); 1041 1042 if (dev->streaming_users > 0) 1043 return -EBUSY; 1044 1045 vidioc_try_fmt_vid_cap(file, priv, f); 1046 1047 return em28xx_set_video_format(dev, f->fmt.pix.pixelformat, 1048 f->fmt.pix.width, f->fmt.pix.height); 1049 } 1050 1051 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) 1052 { 1053 struct em28xx_fh *fh = priv; 1054 struct em28xx *dev = fh->dev; 1055 1056 *norm = dev->norm; 1057 1058 return 0; 1059 } 1060 1061 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm) 1062 { 1063 struct em28xx_fh *fh = priv; 1064 struct em28xx *dev = fh->dev; 1065 1066 v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm); 1067 1068 return 0; 1069 } 1070 1071 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) 1072 { 1073 struct em28xx_fh *fh = priv; 1074 struct em28xx *dev = fh->dev; 1075 struct v4l2_format f; 1076 1077 if (norm == dev->norm) 1078 return 0; 1079 1080 if (dev->streaming_users > 0) 1081 return -EBUSY; 1082 1083 dev->norm = norm; 1084 1085 /* Adjusts width/height, if needed */ 1086 f.fmt.pix.width = 720; 1087 f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576; 1088 vidioc_try_fmt_vid_cap(file, priv, &f); 1089 1090 /* set new image size */ 1091 dev->width = f.fmt.pix.width; 1092 dev->height = f.fmt.pix.height; 1093 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); 1094 1095 em28xx_resolution_set(dev); 1096 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); 1097 1098 return 0; 1099 } 1100 1101 static int vidioc_g_parm(struct file *file, void *priv, 1102 struct v4l2_streamparm *p) 1103 { 1104 struct em28xx_fh *fh = priv; 1105 struct em28xx *dev = fh->dev; 1106 int rc = 0; 1107 1108 p->parm.capture.readbuffers = EM28XX_MIN_BUF; 1109 if (dev->board.is_webcam) 1110 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0, 1111 video, g_parm, p); 1112 else 1113 v4l2_video_std_frame_period(dev->norm, 1114 &p->parm.capture.timeperframe); 1115 1116 return rc; 1117 } 1118 1119 static int vidioc_s_parm(struct file *file, void *priv, 1120 struct v4l2_streamparm *p) 1121 { 1122 struct em28xx_fh *fh = priv; 1123 struct em28xx *dev = fh->dev; 1124 1125 p->parm.capture.readbuffers = EM28XX_MIN_BUF; 1126 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p); 1127 } 1128 1129 static const char *iname[] = { 1130 [EM28XX_VMUX_COMPOSITE1] = "Composite1", 1131 [EM28XX_VMUX_COMPOSITE2] = "Composite2", 1132 [EM28XX_VMUX_COMPOSITE3] = "Composite3", 1133 [EM28XX_VMUX_COMPOSITE4] = "Composite4", 1134 [EM28XX_VMUX_SVIDEO] = "S-Video", 1135 [EM28XX_VMUX_TELEVISION] = "Television", 1136 [EM28XX_VMUX_CABLE] = "Cable TV", 1137 [EM28XX_VMUX_DVB] = "DVB", 1138 [EM28XX_VMUX_DEBUG] = "for debug only", 1139 }; 1140 1141 static int vidioc_enum_input(struct file *file, void *priv, 1142 struct v4l2_input *i) 1143 { 1144 struct em28xx_fh *fh = priv; 1145 struct em28xx *dev = fh->dev; 1146 unsigned int n; 1147 1148 n = i->index; 1149 if (n >= MAX_EM28XX_INPUT) 1150 return -EINVAL; 1151 if (0 == INPUT(n)->type) 1152 return -EINVAL; 1153 1154 i->index = n; 1155 i->type = V4L2_INPUT_TYPE_CAMERA; 1156 1157 strcpy(i->name, iname[INPUT(n)->type]); 1158 1159 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || 1160 (EM28XX_VMUX_CABLE == INPUT(n)->type)) 1161 i->type = V4L2_INPUT_TYPE_TUNER; 1162 1163 i->std = dev->vdev->tvnorms; 1164 /* webcams do not have the STD API */ 1165 if (dev->board.is_webcam) 1166 i->capabilities = 0; 1167 1168 return 0; 1169 } 1170 1171 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) 1172 { 1173 struct em28xx_fh *fh = priv; 1174 struct em28xx *dev = fh->dev; 1175 1176 *i = dev->ctl_input; 1177 1178 return 0; 1179 } 1180 1181 static int vidioc_s_input(struct file *file, void *priv, unsigned int i) 1182 { 1183 struct em28xx_fh *fh = priv; 1184 struct em28xx *dev = fh->dev; 1185 1186 if (i >= MAX_EM28XX_INPUT) 1187 return -EINVAL; 1188 if (0 == INPUT(i)->type) 1189 return -EINVAL; 1190 1191 video_mux(dev, i); 1192 return 0; 1193 } 1194 1195 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) 1196 { 1197 struct em28xx_fh *fh = priv; 1198 struct em28xx *dev = fh->dev; 1199 1200 switch (a->index) { 1201 case EM28XX_AMUX_VIDEO: 1202 strcpy(a->name, "Television"); 1203 break; 1204 case EM28XX_AMUX_LINE_IN: 1205 strcpy(a->name, "Line In"); 1206 break; 1207 case EM28XX_AMUX_VIDEO2: 1208 strcpy(a->name, "Television alt"); 1209 break; 1210 case EM28XX_AMUX_PHONE: 1211 strcpy(a->name, "Phone"); 1212 break; 1213 case EM28XX_AMUX_MIC: 1214 strcpy(a->name, "Mic"); 1215 break; 1216 case EM28XX_AMUX_CD: 1217 strcpy(a->name, "CD"); 1218 break; 1219 case EM28XX_AMUX_AUX: 1220 strcpy(a->name, "Aux"); 1221 break; 1222 case EM28XX_AMUX_PCM_OUT: 1223 strcpy(a->name, "PCM"); 1224 break; 1225 default: 1226 return -EINVAL; 1227 } 1228 1229 a->index = dev->ctl_ainput; 1230 a->capability = V4L2_AUDCAP_STEREO; 1231 1232 return 0; 1233 } 1234 1235 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a) 1236 { 1237 struct em28xx_fh *fh = priv; 1238 struct em28xx *dev = fh->dev; 1239 1240 if (a->index >= MAX_EM28XX_INPUT) 1241 return -EINVAL; 1242 if (0 == INPUT(a->index)->type) 1243 return -EINVAL; 1244 1245 dev->ctl_ainput = INPUT(a->index)->amux; 1246 dev->ctl_aoutput = INPUT(a->index)->aout; 1247 1248 if (!dev->ctl_aoutput) 1249 dev->ctl_aoutput = EM28XX_AOUT_MASTER; 1250 1251 return 0; 1252 } 1253 1254 static int vidioc_g_tuner(struct file *file, void *priv, 1255 struct v4l2_tuner *t) 1256 { 1257 struct em28xx_fh *fh = priv; 1258 struct em28xx *dev = fh->dev; 1259 1260 if (0 != t->index) 1261 return -EINVAL; 1262 1263 strcpy(t->name, "Tuner"); 1264 1265 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); 1266 return 0; 1267 } 1268 1269 static int vidioc_s_tuner(struct file *file, void *priv, 1270 const struct v4l2_tuner *t) 1271 { 1272 struct em28xx_fh *fh = priv; 1273 struct em28xx *dev = fh->dev; 1274 1275 if (0 != t->index) 1276 return -EINVAL; 1277 1278 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); 1279 return 0; 1280 } 1281 1282 static int vidioc_g_frequency(struct file *file, void *priv, 1283 struct v4l2_frequency *f) 1284 { 1285 struct em28xx_fh *fh = priv; 1286 struct em28xx *dev = fh->dev; 1287 1288 if (0 != f->tuner) 1289 return -EINVAL; 1290 1291 f->frequency = dev->ctl_freq; 1292 return 0; 1293 } 1294 1295 static int vidioc_s_frequency(struct file *file, void *priv, 1296 const struct v4l2_frequency *f) 1297 { 1298 struct v4l2_frequency new_freq = *f; 1299 struct em28xx_fh *fh = priv; 1300 struct em28xx *dev = fh->dev; 1301 1302 if (0 != f->tuner) 1303 return -EINVAL; 1304 1305 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f); 1306 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq); 1307 dev->ctl_freq = new_freq.frequency; 1308 1309 return 0; 1310 } 1311 1312 #ifdef CONFIG_VIDEO_ADV_DEBUG 1313 static int vidioc_g_chip_info(struct file *file, void *priv, 1314 struct v4l2_dbg_chip_info *chip) 1315 { 1316 struct em28xx_fh *fh = priv; 1317 struct em28xx *dev = fh->dev; 1318 1319 if (chip->match.addr > 1) 1320 return -EINVAL; 1321 if (chip->match.addr == 1) 1322 strlcpy(chip->name, "ac97", sizeof(chip->name)); 1323 else 1324 strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name)); 1325 return 0; 1326 } 1327 1328 static int em28xx_reg_len(int reg) 1329 { 1330 switch (reg) { 1331 case EM28XX_R40_AC97LSB: 1332 case EM28XX_R30_HSCALELOW: 1333 case EM28XX_R32_VSCALELOW: 1334 return 2; 1335 default: 1336 return 1; 1337 } 1338 } 1339 1340 static int vidioc_g_register(struct file *file, void *priv, 1341 struct v4l2_dbg_register *reg) 1342 { 1343 struct em28xx_fh *fh = priv; 1344 struct em28xx *dev = fh->dev; 1345 int ret; 1346 1347 if (reg->match.addr > 1) 1348 return -EINVAL; 1349 if (reg->match.addr) { 1350 ret = em28xx_read_ac97(dev, reg->reg); 1351 if (ret < 0) 1352 return ret; 1353 1354 reg->val = ret; 1355 reg->size = 1; 1356 return 0; 1357 } 1358 1359 /* Match host */ 1360 reg->size = em28xx_reg_len(reg->reg); 1361 if (reg->size == 1) { 1362 ret = em28xx_read_reg(dev, reg->reg); 1363 1364 if (ret < 0) 1365 return ret; 1366 1367 reg->val = ret; 1368 } else { 1369 __le16 val = 0; 1370 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, 1371 reg->reg, (char *)&val, 2); 1372 if (ret < 0) 1373 return ret; 1374 1375 reg->val = le16_to_cpu(val); 1376 } 1377 1378 return 0; 1379 } 1380 1381 static int vidioc_s_register(struct file *file, void *priv, 1382 const struct v4l2_dbg_register *reg) 1383 { 1384 struct em28xx_fh *fh = priv; 1385 struct em28xx *dev = fh->dev; 1386 __le16 buf; 1387 1388 if (reg->match.addr > 1) 1389 return -EINVAL; 1390 if (reg->match.addr) 1391 return em28xx_write_ac97(dev, reg->reg, reg->val); 1392 1393 /* Match host */ 1394 buf = cpu_to_le16(reg->val); 1395 1396 return em28xx_write_regs(dev, reg->reg, (char *)&buf, 1397 em28xx_reg_len(reg->reg)); 1398 } 1399 #endif 1400 1401 1402 static int vidioc_querycap(struct file *file, void *priv, 1403 struct v4l2_capability *cap) 1404 { 1405 struct video_device *vdev = video_devdata(file); 1406 struct em28xx_fh *fh = priv; 1407 struct em28xx *dev = fh->dev; 1408 1409 strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); 1410 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); 1411 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 1412 1413 if (vdev->vfl_type == VFL_TYPE_GRABBER) 1414 cap->device_caps = V4L2_CAP_READWRITE | 1415 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 1416 else if (vdev->vfl_type == VFL_TYPE_RADIO) 1417 cap->device_caps = V4L2_CAP_RADIO; 1418 else 1419 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE; 1420 1421 if (dev->audio_mode.has_audio) 1422 cap->device_caps |= V4L2_CAP_AUDIO; 1423 1424 if (dev->tuner_type != TUNER_ABSENT) 1425 cap->device_caps |= V4L2_CAP_TUNER; 1426 1427 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS | 1428 V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 1429 if (dev->vbi_dev) 1430 cap->capabilities |= V4L2_CAP_VBI_CAPTURE; 1431 if (dev->radio_dev) 1432 cap->capabilities |= V4L2_CAP_RADIO; 1433 return 0; 1434 } 1435 1436 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 1437 struct v4l2_fmtdesc *f) 1438 { 1439 if (unlikely(f->index >= ARRAY_SIZE(format))) 1440 return -EINVAL; 1441 1442 strlcpy(f->description, format[f->index].name, sizeof(f->description)); 1443 f->pixelformat = format[f->index].fourcc; 1444 1445 return 0; 1446 } 1447 1448 static int vidioc_enum_framesizes(struct file *file, void *priv, 1449 struct v4l2_frmsizeenum *fsize) 1450 { 1451 struct em28xx_fh *fh = priv; 1452 struct em28xx *dev = fh->dev; 1453 struct em28xx_fmt *fmt; 1454 unsigned int maxw = norm_maxw(dev); 1455 unsigned int maxh = norm_maxh(dev); 1456 1457 fmt = format_by_fourcc(fsize->pixel_format); 1458 if (!fmt) { 1459 em28xx_videodbg("Fourcc format (%08x) invalid.\n", 1460 fsize->pixel_format); 1461 return -EINVAL; 1462 } 1463 1464 if (dev->board.is_em2800) { 1465 if (fsize->index > 1) 1466 return -EINVAL; 1467 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; 1468 fsize->discrete.width = maxw / (1 + fsize->index); 1469 fsize->discrete.height = maxh / (1 + fsize->index); 1470 return 0; 1471 } 1472 1473 if (fsize->index != 0) 1474 return -EINVAL; 1475 1476 /* Report a continuous range */ 1477 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; 1478 scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX, 1479 &fsize->stepwise.min_width, &fsize->stepwise.min_height); 1480 if (fsize->stepwise.min_width < 48) 1481 fsize->stepwise.min_width = 48; 1482 if (fsize->stepwise.min_height < 38) 1483 fsize->stepwise.min_height = 38; 1484 fsize->stepwise.max_width = maxw; 1485 fsize->stepwise.max_height = maxh; 1486 fsize->stepwise.step_width = 1; 1487 fsize->stepwise.step_height = 1; 1488 return 0; 1489 } 1490 1491 /* RAW VBI ioctls */ 1492 1493 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, 1494 struct v4l2_format *format) 1495 { 1496 struct em28xx_fh *fh = priv; 1497 struct em28xx *dev = fh->dev; 1498 1499 format->fmt.vbi.samples_per_line = dev->vbi_width; 1500 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; 1501 format->fmt.vbi.offset = 0; 1502 format->fmt.vbi.flags = 0; 1503 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; 1504 format->fmt.vbi.count[0] = dev->vbi_height; 1505 format->fmt.vbi.count[1] = dev->vbi_height; 1506 memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved)); 1507 1508 /* Varies by video standard (NTSC, PAL, etc.) */ 1509 if (dev->norm & V4L2_STD_525_60) { 1510 /* NTSC */ 1511 format->fmt.vbi.start[0] = 10; 1512 format->fmt.vbi.start[1] = 273; 1513 } else if (dev->norm & V4L2_STD_625_50) { 1514 /* PAL */ 1515 format->fmt.vbi.start[0] = 6; 1516 format->fmt.vbi.start[1] = 318; 1517 } 1518 1519 return 0; 1520 } 1521 1522 /* ----------------------------------------------------------- */ 1523 /* RADIO ESPECIFIC IOCTLS */ 1524 /* ----------------------------------------------------------- */ 1525 1526 static int radio_g_tuner(struct file *file, void *priv, 1527 struct v4l2_tuner *t) 1528 { 1529 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; 1530 1531 if (unlikely(t->index > 0)) 1532 return -EINVAL; 1533 1534 strcpy(t->name, "Radio"); 1535 1536 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); 1537 1538 return 0; 1539 } 1540 1541 static int radio_s_tuner(struct file *file, void *priv, 1542 const struct v4l2_tuner *t) 1543 { 1544 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; 1545 1546 if (0 != t->index) 1547 return -EINVAL; 1548 1549 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); 1550 1551 return 0; 1552 } 1553 1554 /* 1555 * em28xx_v4l2_open() 1556 * inits the device and starts isoc transfer 1557 */ 1558 static int em28xx_v4l2_open(struct file *filp) 1559 { 1560 struct video_device *vdev = video_devdata(filp); 1561 struct em28xx *dev = video_drvdata(filp); 1562 enum v4l2_buf_type fh_type = 0; 1563 struct em28xx_fh *fh; 1564 1565 switch (vdev->vfl_type) { 1566 case VFL_TYPE_GRABBER: 1567 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1568 break; 1569 case VFL_TYPE_VBI: 1570 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; 1571 break; 1572 } 1573 1574 em28xx_videodbg("open dev=%s type=%s users=%d\n", 1575 video_device_node_name(vdev), v4l2_type_names[fh_type], 1576 dev->users); 1577 1578 1579 if (mutex_lock_interruptible(&dev->lock)) 1580 return -ERESTARTSYS; 1581 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); 1582 if (!fh) { 1583 em28xx_errdev("em28xx-video.c: Out of memory?!\n"); 1584 mutex_unlock(&dev->lock); 1585 return -ENOMEM; 1586 } 1587 v4l2_fh_init(&fh->fh, vdev); 1588 fh->dev = dev; 1589 fh->type = fh_type; 1590 filp->private_data = fh; 1591 1592 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { 1593 em28xx_set_mode(dev, EM28XX_ANALOG_MODE); 1594 em28xx_resolution_set(dev); 1595 1596 /* Needed, since GPIO might have disabled power of 1597 some i2c device 1598 */ 1599 em28xx_wake_i2c(dev); 1600 1601 } 1602 1603 if (vdev->vfl_type == VFL_TYPE_RADIO) { 1604 em28xx_videodbg("video_open: setting radio device\n"); 1605 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio); 1606 } 1607 1608 dev->users++; 1609 1610 mutex_unlock(&dev->lock); 1611 v4l2_fh_add(&fh->fh); 1612 1613 return 0; 1614 } 1615 1616 /* 1617 * em28xx_realease_resources() 1618 * unregisters the v4l2,i2c and usb devices 1619 * called when the device gets disconected or at module unload 1620 */ 1621 void em28xx_release_analog_resources(struct em28xx *dev) 1622 { 1623 1624 /*FIXME: I2C IR should be disconnected */ 1625 1626 if (dev->radio_dev) { 1627 if (video_is_registered(dev->radio_dev)) 1628 video_unregister_device(dev->radio_dev); 1629 else 1630 video_device_release(dev->radio_dev); 1631 dev->radio_dev = NULL; 1632 } 1633 if (dev->vbi_dev) { 1634 em28xx_info("V4L2 device %s deregistered\n", 1635 video_device_node_name(dev->vbi_dev)); 1636 if (video_is_registered(dev->vbi_dev)) 1637 video_unregister_device(dev->vbi_dev); 1638 else 1639 video_device_release(dev->vbi_dev); 1640 dev->vbi_dev = NULL; 1641 } 1642 if (dev->vdev) { 1643 em28xx_info("V4L2 device %s deregistered\n", 1644 video_device_node_name(dev->vdev)); 1645 if (video_is_registered(dev->vdev)) 1646 video_unregister_device(dev->vdev); 1647 else 1648 video_device_release(dev->vdev); 1649 dev->vdev = NULL; 1650 } 1651 } 1652 1653 /* 1654 * em28xx_v4l2_close() 1655 * stops streaming and deallocates all resources allocated by the v4l2 1656 * calls and ioctls 1657 */ 1658 static int em28xx_v4l2_close(struct file *filp) 1659 { 1660 struct em28xx_fh *fh = filp->private_data; 1661 struct em28xx *dev = fh->dev; 1662 int errCode; 1663 1664 em28xx_videodbg("users=%d\n", dev->users); 1665 1666 mutex_lock(&dev->lock); 1667 vb2_fop_release(filp); 1668 1669 if (dev->users == 1) { 1670 /* the device is already disconnect, 1671 free the remaining resources */ 1672 if (dev->disconnected) { 1673 em28xx_release_resources(dev); 1674 kfree(dev->alt_max_pkt_size_isoc); 1675 mutex_unlock(&dev->lock); 1676 kfree(dev); 1677 return 0; 1678 } 1679 1680 /* Save some power by putting tuner to sleep */ 1681 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0); 1682 1683 /* do this before setting alternate! */ 1684 em28xx_set_mode(dev, EM28XX_SUSPEND); 1685 1686 /* set alternate 0 */ 1687 dev->alt = 0; 1688 em28xx_videodbg("setting alternate 0\n"); 1689 errCode = usb_set_interface(dev->udev, 0, 0); 1690 if (errCode < 0) { 1691 em28xx_errdev("cannot change alternate number to " 1692 "0 (error=%i)\n", errCode); 1693 } 1694 } 1695 1696 dev->users--; 1697 mutex_unlock(&dev->lock); 1698 return 0; 1699 } 1700 1701 static const struct v4l2_file_operations em28xx_v4l_fops = { 1702 .owner = THIS_MODULE, 1703 .open = em28xx_v4l2_open, 1704 .release = em28xx_v4l2_close, 1705 .read = vb2_fop_read, 1706 .poll = vb2_fop_poll, 1707 .mmap = vb2_fop_mmap, 1708 .unlocked_ioctl = video_ioctl2, 1709 }; 1710 1711 static const struct v4l2_ioctl_ops video_ioctl_ops = { 1712 .vidioc_querycap = vidioc_querycap, 1713 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 1714 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1715 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, 1716 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 1717 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 1718 .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 1719 .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, 1720 .vidioc_enum_framesizes = vidioc_enum_framesizes, 1721 .vidioc_g_audio = vidioc_g_audio, 1722 .vidioc_s_audio = vidioc_s_audio, 1723 1724 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1725 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1726 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1727 .vidioc_querybuf = vb2_ioctl_querybuf, 1728 .vidioc_qbuf = vb2_ioctl_qbuf, 1729 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1730 1731 .vidioc_g_std = vidioc_g_std, 1732 .vidioc_querystd = vidioc_querystd, 1733 .vidioc_s_std = vidioc_s_std, 1734 .vidioc_g_parm = vidioc_g_parm, 1735 .vidioc_s_parm = vidioc_s_parm, 1736 .vidioc_enum_input = vidioc_enum_input, 1737 .vidioc_g_input = vidioc_g_input, 1738 .vidioc_s_input = vidioc_s_input, 1739 .vidioc_streamon = vb2_ioctl_streamon, 1740 .vidioc_streamoff = vb2_ioctl_streamoff, 1741 .vidioc_g_tuner = vidioc_g_tuner, 1742 .vidioc_s_tuner = vidioc_s_tuner, 1743 .vidioc_g_frequency = vidioc_g_frequency, 1744 .vidioc_s_frequency = vidioc_s_frequency, 1745 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1746 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1747 #ifdef CONFIG_VIDEO_ADV_DEBUG 1748 .vidioc_g_chip_info = vidioc_g_chip_info, 1749 .vidioc_g_register = vidioc_g_register, 1750 .vidioc_s_register = vidioc_s_register, 1751 #endif 1752 }; 1753 1754 static const struct video_device em28xx_video_template = { 1755 .fops = &em28xx_v4l_fops, 1756 .release = video_device_release_empty, 1757 .ioctl_ops = &video_ioctl_ops, 1758 1759 .tvnorms = V4L2_STD_ALL, 1760 }; 1761 1762 static const struct v4l2_file_operations radio_fops = { 1763 .owner = THIS_MODULE, 1764 .open = em28xx_v4l2_open, 1765 .release = em28xx_v4l2_close, 1766 .unlocked_ioctl = video_ioctl2, 1767 }; 1768 1769 static const struct v4l2_ioctl_ops radio_ioctl_ops = { 1770 .vidioc_querycap = vidioc_querycap, 1771 .vidioc_g_tuner = radio_g_tuner, 1772 .vidioc_s_tuner = radio_s_tuner, 1773 .vidioc_g_frequency = vidioc_g_frequency, 1774 .vidioc_s_frequency = vidioc_s_frequency, 1775 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1776 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1777 #ifdef CONFIG_VIDEO_ADV_DEBUG 1778 .vidioc_g_chip_info = vidioc_g_chip_info, 1779 .vidioc_g_register = vidioc_g_register, 1780 .vidioc_s_register = vidioc_s_register, 1781 #endif 1782 }; 1783 1784 static struct video_device em28xx_radio_template = { 1785 .name = "em28xx-radio", 1786 .fops = &radio_fops, 1787 .ioctl_ops = &radio_ioctl_ops, 1788 }; 1789 1790 /******************************** usb interface ******************************/ 1791 1792 1793 1794 static struct video_device *em28xx_vdev_init(struct em28xx *dev, 1795 const struct video_device *template, 1796 const char *type_name) 1797 { 1798 struct video_device *vfd; 1799 1800 vfd = video_device_alloc(); 1801 if (NULL == vfd) 1802 return NULL; 1803 1804 *vfd = *template; 1805 vfd->v4l2_dev = &dev->v4l2_dev; 1806 vfd->debug = video_debug; 1807 vfd->lock = &dev->lock; 1808 set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); 1809 if (dev->board.is_webcam) 1810 vfd->tvnorms = 0; 1811 1812 snprintf(vfd->name, sizeof(vfd->name), "%s %s", 1813 dev->name, type_name); 1814 1815 video_set_drvdata(vfd, dev); 1816 return vfd; 1817 } 1818 1819 int em28xx_register_analog_devices(struct em28xx *dev) 1820 { 1821 u8 val; 1822 int ret; 1823 unsigned int maxw; 1824 1825 printk(KERN_INFO "%s: v4l2 driver version %s\n", 1826 dev->name, EM28XX_VERSION); 1827 1828 /* set default norm */ 1829 dev->norm = V4L2_STD_PAL; 1830 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); 1831 dev->interlaced = EM28XX_INTERLACED_DEFAULT; 1832 1833 /* Analog specific initialization */ 1834 dev->format = &format[0]; 1835 1836 maxw = norm_maxw(dev); 1837 /* MaxPacketSize for em2800 is too small to capture at full resolution 1838 * use half of maxw as the scaler can only scale to 50% */ 1839 if (dev->board.is_em2800) 1840 maxw /= 2; 1841 1842 em28xx_set_video_format(dev, format[0].fourcc, 1843 maxw, norm_maxh(dev)); 1844 1845 video_mux(dev, 0); 1846 1847 /* Audio defaults */ 1848 dev->mute = 1; 1849 dev->volume = 0x1f; 1850 1851 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */ 1852 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK); 1853 em28xx_write_reg(dev, EM28XX_R0F_XCLK, 1854 (EM28XX_XCLK_AUDIO_UNMUTE | val)); 1855 1856 em28xx_set_outfmt(dev); 1857 em28xx_compression_disable(dev); 1858 1859 /* Add image controls */ 1860 /* NOTE: at this point, the subdevices are already registered, so bridge 1861 * controls are only added/enabled when no subdevice provides them */ 1862 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_CONTRAST)) 1863 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1864 V4L2_CID_CONTRAST, 1865 0, 0x1f, 1, CONTRAST_DEFAULT); 1866 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BRIGHTNESS)) 1867 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1868 V4L2_CID_BRIGHTNESS, 1869 -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT); 1870 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SATURATION)) 1871 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1872 V4L2_CID_SATURATION, 1873 0, 0x1f, 1, SATURATION_DEFAULT); 1874 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BLUE_BALANCE)) 1875 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1876 V4L2_CID_BLUE_BALANCE, 1877 -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT); 1878 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_RED_BALANCE)) 1879 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1880 V4L2_CID_RED_BALANCE, 1881 -0x30, 0x30, 1, RED_BALANCE_DEFAULT); 1882 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SHARPNESS)) 1883 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops, 1884 V4L2_CID_SHARPNESS, 1885 0, 0x0f, 1, SHARPNESS_DEFAULT); 1886 1887 /* Reset image controls */ 1888 em28xx_colorlevels_set_default(dev); 1889 v4l2_ctrl_handler_setup(&dev->ctrl_handler); 1890 if (dev->ctrl_handler.error) 1891 return dev->ctrl_handler.error; 1892 1893 /* allocate and fill video video_device struct */ 1894 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video"); 1895 if (!dev->vdev) { 1896 em28xx_errdev("cannot allocate video_device.\n"); 1897 return -ENODEV; 1898 } 1899 dev->vdev->queue = &dev->vb_vidq; 1900 dev->vdev->queue->lock = &dev->vb_queue_lock; 1901 1902 /* disable inapplicable ioctls */ 1903 if (dev->board.is_webcam) { 1904 v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD); 1905 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD); 1906 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD); 1907 } else { 1908 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM); 1909 } 1910 if (dev->tuner_type == TUNER_ABSENT) { 1911 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_TUNER); 1912 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_TUNER); 1913 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_FREQUENCY); 1914 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_FREQUENCY); 1915 } 1916 if (!dev->audio_mode.has_audio) { 1917 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_AUDIO); 1918 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_AUDIO); 1919 } 1920 1921 /* register v4l2 video video_device */ 1922 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER, 1923 video_nr[dev->devno]); 1924 if (ret) { 1925 em28xx_errdev("unable to register video device (error=%i).\n", 1926 ret); 1927 return ret; 1928 } 1929 1930 /* Allocate and fill vbi video_device struct */ 1931 if (em28xx_vbi_supported(dev) == 1) { 1932 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, 1933 "vbi"); 1934 1935 dev->vbi_dev->queue = &dev->vb_vbiq; 1936 dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock; 1937 1938 /* disable inapplicable ioctls */ 1939 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM); 1940 if (dev->tuner_type == TUNER_ABSENT) { 1941 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER); 1942 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER); 1943 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_FREQUENCY); 1944 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_FREQUENCY); 1945 } 1946 if (!dev->audio_mode.has_audio) { 1947 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_AUDIO); 1948 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_AUDIO); 1949 } 1950 1951 /* register v4l2 vbi video_device */ 1952 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, 1953 vbi_nr[dev->devno]); 1954 if (ret < 0) { 1955 em28xx_errdev("unable to register vbi device\n"); 1956 return ret; 1957 } 1958 } 1959 1960 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { 1961 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, 1962 "radio"); 1963 if (!dev->radio_dev) { 1964 em28xx_errdev("cannot allocate video_device.\n"); 1965 return -ENODEV; 1966 } 1967 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO, 1968 radio_nr[dev->devno]); 1969 if (ret < 0) { 1970 em28xx_errdev("can't register radio device\n"); 1971 return ret; 1972 } 1973 em28xx_info("Registered radio device as %s\n", 1974 video_device_node_name(dev->radio_dev)); 1975 } 1976 1977 em28xx_info("V4L2 video device registered as %s\n", 1978 video_device_node_name(dev->vdev)); 1979 1980 if (dev->vbi_dev) 1981 em28xx_info("V4L2 VBI device registered as %s\n", 1982 video_device_node_name(dev->vbi_dev)); 1983 1984 return 0; 1985 } 1986