Pileus Git - ~andy/linux/blob - drivers/media/usb/em28xx/em28xx-video.c

   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/v4l2-chip-ident.h>
  45 #include <media/msp3400.h>
  46 #include <media/tuner.h>
  47
  48 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
  49                       "Markus Rechberger <mrechberger@gmail.com>, " \
  50                       "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
  51                       "Sascha Sommer <saschasommer@freenet.de>"
  52
  53 #define DRIVER_DESC         "Empia em28xx based USB video device driver"
  54
  55 #define EM28XX_VERSION "0.2.0"
  56
  57 #define em28xx_videodbg(fmt, arg...) do {\
  58         if (video_debug) \
  59                 printk(KERN_INFO "%s %s :"fmt, \
  60                          dev->name, __func__ , ##arg); } while (0)
  61
  62 static unsigned int isoc_debug;
  63 module_param(isoc_debug, int, 0644);
  64 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  65
  66 #define em28xx_isocdbg(fmt, arg...) \
  67 do {\
  68         if (isoc_debug) { \
  69                 printk(KERN_INFO "%s %s :"fmt, \
  70                          dev->name, __func__ , ##arg); \
  71         } \
  72   } while (0)
  73
  74 MODULE_AUTHOR(DRIVER_AUTHOR);
  75 MODULE_DESCRIPTION(DRIVER_DESC);
  76 MODULE_LICENSE("GPL");
  77 MODULE_VERSION(EM28XX_VERSION);
  78
  79
  80 #define EM25XX_FRMDATAHDR_BYTE1                 0x02
  81 #define EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE     0x20
  82 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_END       0x02
  83 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_ID        0x01
  84 #define EM25XX_FRMDATAHDR_BYTE2_MASK    (EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE | \
  85                                          EM25XX_FRMDATAHDR_BYTE2_FRAME_END |   \
  86                                          EM25XX_FRMDATAHDR_BYTE2_FRAME_ID)
  87
  88
  89 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
  90 static unsigned int vbi_nr[]   = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
  91 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
  92
  93 module_param_array(video_nr, int, NULL, 0444);
  94 module_param_array(vbi_nr, int, NULL, 0444);
  95 module_param_array(radio_nr, int, NULL, 0444);
  96 MODULE_PARM_DESC(video_nr, "video device numbers");
  97 MODULE_PARM_DESC(vbi_nr,   "vbi device numbers");
  98 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  99
 100 static unsigned int video_debug;
 101 module_param(video_debug, int, 0644);
 102 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
 103
 104 /* supported video standards */
 105 static struct em28xx_fmt format[] = {
 106         {
 107                 .name     = "16 bpp YUY2, 4:2:2, packed",
 108                 .fourcc   = V4L2_PIX_FMT_YUYV,
 109                 .depth    = 16,
 110                 .reg      = EM28XX_OUTFMT_YUV422_Y0UY1V,
 111         }, {
 112                 .name     = "16 bpp RGB 565, LE",
 113                 .fourcc   = V4L2_PIX_FMT_RGB565,
 114                 .depth    = 16,
 115                 .reg      = EM28XX_OUTFMT_RGB_16_656,
 116         }, {
 117                 .name     = "8 bpp Bayer BGBG..GRGR",
 118                 .fourcc   = V4L2_PIX_FMT_SBGGR8,
 119                 .depth    = 8,
 120                 .reg      = EM28XX_OUTFMT_RGB_8_BGBG,
 121         }, {
 122                 .name     = "8 bpp Bayer GRGR..BGBG",
 123                 .fourcc   = V4L2_PIX_FMT_SGRBG8,
 124                 .depth    = 8,
 125                 .reg      = EM28XX_OUTFMT_RGB_8_GRGR,
 126         }, {
 127                 .name     = "8 bpp Bayer GBGB..RGRG",
 128                 .fourcc   = V4L2_PIX_FMT_SGBRG8,
 129                 .depth    = 8,
 130                 .reg      = EM28XX_OUTFMT_RGB_8_GBGB,
 131         }, {
 132                 .name     = "12 bpp YUV411",
 133                 .fourcc   = V4L2_PIX_FMT_YUV411P,
 134                 .depth    = 12,
 135                 .reg      = EM28XX_OUTFMT_YUV411,
 136         },
 137 };
 138
 139 /* ------------------------------------------------------------------
 140         DMA and thread functions
 141    ------------------------------------------------------------------*/
 142
 143 /*
 144  * Finish the current buffer
 145  */
 146 static inline void finish_buffer(struct em28xx *dev,
 147                                  struct em28xx_buffer *buf)
 148 {
 149         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
 150
 151         buf->vb.v4l2_buf.sequence = dev->field_count++;
 152         buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
 153         v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
 154
 155         vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
 156 }
 157
 158 /*
 159  * Copy picture data from USB buffer to videobuf buffer
 160  */
 161 static void em28xx_copy_video(struct em28xx *dev,
 162                               struct em28xx_buffer *buf,
 163                               unsigned char *usb_buf,
 164                               unsigned long len)
 165 {
 166         void *fieldstart, *startwrite, *startread;
 167         int  linesdone, currlinedone, offset, lencopy, remain;
 168         int bytesperline = dev->width << 1;
 169
 170         if (buf->pos + len > buf->length)
 171                 len = buf->length - buf->pos;
 172
 173         startread = usb_buf;
 174         remain = len;
 175
 176         if (dev->progressive || buf->top_field)
 177                 fieldstart = buf->vb_buf;
 178         else /* interlaced mode, even nr. of lines */
 179                 fieldstart = buf->vb_buf + bytesperline;
 180
 181         linesdone = buf->pos / bytesperline;
 182         currlinedone = buf->pos % bytesperline;
 183
 184         if (dev->progressive)
 185                 offset = linesdone * bytesperline + currlinedone;
 186         else
 187                 offset = linesdone * bytesperline * 2 + currlinedone;
 188
 189         startwrite = fieldstart + offset;
 190         lencopy = bytesperline - currlinedone;
 191         lencopy = lencopy > remain ? remain : lencopy;
 192
 193         if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) {
 194                 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 195                               ((char *)startwrite + lencopy) -
 196                               ((char *)buf->vb_buf + buf->length));
 197                 remain = (char *)buf->vb_buf + buf->length -
 198                          (char *)startwrite;
 199                 lencopy = remain;
 200         }
 201         if (lencopy <= 0)
 202                 return;
 203         memcpy(startwrite, startread, lencopy);
 204
 205         remain -= lencopy;
 206
 207         while (remain > 0) {
 208                 if (dev->progressive)
 209                         startwrite += lencopy;
 210                 else
 211                         startwrite += lencopy + bytesperline;
 212                 startread += lencopy;
 213                 if (bytesperline > remain)
 214                         lencopy = remain;
 215                 else
 216                         lencopy = bytesperline;
 217
 218                 if ((char *)startwrite + lencopy > (char *)buf->vb_buf +
 219                     buf->length) {
 220                         em28xx_isocdbg("Overflow of %zi bytes past buffer end"
 221                                        "(2)\n",
 222                                        ((char *)startwrite + lencopy) -
 223                                        ((char *)buf->vb_buf + buf->length));
 224                         lencopy = remain = (char *)buf->vb_buf + buf->length -
 225                                 (char *)startwrite;
 226                 }
 227                 if (lencopy <= 0)
 228                         break;
 229
 230                 memcpy(startwrite, startread, lencopy);
 231
 232                 remain -= lencopy;
 233         }
 234
 235         buf->pos += len;
 236 }
 237
 238 /*
 239  * Copy VBI data from USB buffer to videobuf buffer
 240  */
 241 static void em28xx_copy_vbi(struct em28xx *dev,
 242                             struct em28xx_buffer *buf,
 243                             unsigned char *usb_buf,
 244                             unsigned long len)
 245 {
 246         unsigned int offset;
 247
 248         if (buf->pos + len > buf->length)
 249                 len = buf->length - buf->pos;
 250
 251         offset = buf->pos;
 252         /* Make sure the bottom field populates the second half of the frame */
 253         if (buf->top_field == 0)
 254                 offset += dev->vbi_width * dev->vbi_height;
 255
 256         memcpy(buf->vb_buf + offset, usb_buf, len);
 257         buf->pos += len;
 258 }
 259
 260 static inline void print_err_status(struct em28xx *dev,
 261                                      int packet, int status)
 262 {
 263         char *errmsg = "Unknown";
 264
 265         switch (status) {
 266         case -ENOENT:
 267                 errmsg = "unlinked synchronuously";
 268                 break;
 269         case -ECONNRESET:
 270                 errmsg = "unlinked asynchronuously";
 271                 break;
 272         case -ENOSR:
 273                 errmsg = "Buffer error (overrun)";
 274                 break;
 275         case -EPIPE:
 276                 errmsg = "Stalled (device not responding)";
 277                 break;
 278         case -EOVERFLOW:
 279                 errmsg = "Babble (bad cable?)";
 280                 break;
 281         case -EPROTO:
 282                 errmsg = "Bit-stuff error (bad cable?)";
 283                 break;
 284         case -EILSEQ:
 285                 errmsg = "CRC/Timeout (could be anything)";
 286                 break;
 287         case -ETIME:
 288                 errmsg = "Device does not respond";
 289                 break;
 290         }
 291         if (packet < 0) {
 292                 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 293         } else {
 294                 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
 295                                packet, status, errmsg);
 296         }
 297 }
 298
 299 /*
 300  * get the next available buffer from dma queue
 301  */
 302 static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
 303                                                  struct em28xx_dmaqueue *dma_q)
 304 {
 305         struct em28xx_buffer *buf;
 306
 307         if (list_empty(&dma_q->active)) {
 308                 em28xx_isocdbg("No active queue to serve\n");
 309                 return NULL;
 310         }
 311
 312         /* Get the next buffer */
 313         buf = list_entry(dma_q->active.next, struct em28xx_buffer, list);
 314         /* Cleans up buffer - Useful for testing for frame/URB loss */
 315         list_del(&buf->list);
 316         buf->pos = 0;
 317         buf->vb_buf = buf->mem;
 318
 319         return buf;
 320 }
 321
 322 /*
 323  * Finish the current buffer if completed and prepare for the next field
 324  */
 325 static struct em28xx_buffer *
 326 finish_field_prepare_next(struct em28xx *dev,
 327                           struct em28xx_buffer *buf,
 328                           struct em28xx_dmaqueue *dma_q)
 329 {
 330         if (dev->progressive || dev->top_field) { /* Brand new frame */
 331                 if (buf != NULL)
 332                         finish_buffer(dev, buf);
 333                 buf = get_next_buf(dev, dma_q);
 334         }
 335         if (buf != NULL) {
 336                 buf->top_field = dev->top_field;
 337                 buf->pos = 0;
 338         }
 339
 340         return buf;
 341 }
 342
 343 /*
 344  * Process data packet according to the em2710/em2750/em28xx frame data format
 345  */
 346 static inline void process_frame_data_em28xx(struct em28xx *dev,
 347                                              unsigned char *data_pkt,
 348                                              unsigned int  data_len)
 349 {
 350         struct em28xx_buffer    *buf = dev->usb_ctl.vid_buf;
 351         struct em28xx_buffer    *vbi_buf = dev->usb_ctl.vbi_buf;
 352         struct em28xx_dmaqueue  *dma_q = &dev->vidq;
 353         struct em28xx_dmaqueue  *vbi_dma_q = &dev->vbiq;
 354
 355         /* capture type 0 = vbi start
 356            capture type 1 = vbi in progress
 357            capture type 2 = video start
 358            capture type 3 = video in progress */
 359         if (data_len >= 4) {
 360                 /* NOTE: Headers are always 4 bytes and
 361                  * never split across packets */
 362                 if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 &&
 363                     data_pkt[2] == 0x88 && data_pkt[3] == 0x88) {
 364                         /* Continuation */
 365                         data_pkt += 4;
 366                         data_len -= 4;
 367                 } else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) {
 368                         /* Field start (VBI mode) */
 369                         dev->capture_type = 0;
 370                         dev->vbi_read = 0;
 371                         em28xx_isocdbg("VBI START HEADER !!!\n");
 372                         dev->top_field = !(data_pkt[2] & 1);
 373                         data_pkt += 4;
 374                         data_len -= 4;
 375                 } else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) {
 376                         /* Field start (VBI disabled) */
 377                         dev->capture_type = 2;
 378                         em28xx_isocdbg("VIDEO START HEADER !!!\n");
 379                         dev->top_field = !(data_pkt[2] & 1);
 380                         data_pkt += 4;
 381                         data_len -= 4;
 382                 }
 383         }
 384         /* NOTE: With bulk transfers, intermediate data packets
 385          * have no continuation header */
 386
 387         if (dev->capture_type == 0) {
 388                 vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q);
 389                 dev->usb_ctl.vbi_buf = vbi_buf;
 390                 dev->capture_type = 1;
 391         }
 392
 393         if (dev->capture_type == 1) {
 394                 int vbi_size = dev->vbi_width * dev->vbi_height;
 395                 int vbi_data_len = ((dev->vbi_read + data_len) > vbi_size) ?
 396                                    (vbi_size - dev->vbi_read) : data_len;
 397
 398                 /* Copy VBI data */
 399                 if (vbi_buf != NULL)
 400                         em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len);
 401                 dev->vbi_read += vbi_data_len;
 402
 403                 if (vbi_data_len < data_len) {
 404                         /* Continue with copying video data */
 405                         dev->capture_type = 2;
 406                         data_pkt += vbi_data_len;
 407                         data_len -= vbi_data_len;
 408                 }
 409         }
 410
 411         if (dev->capture_type == 2) {
 412                 buf = finish_field_prepare_next(dev, buf, dma_q);
 413                 dev->usb_ctl.vid_buf = buf;
 414                 dev->capture_type = 3;
 415         }
 416
 417         if (dev->capture_type == 3 && buf != NULL && data_len > 0)
 418                 em28xx_copy_video(dev, buf, data_pkt, data_len);
 419 }
 420
 421 /*
 422  * Process data packet according to the em25xx/em276x/7x/8x frame data format
 423  */
 424 static inline void process_frame_data_em25xx(struct em28xx *dev,
 425                                              unsigned char *data_pkt,
 426                                              unsigned int  data_len)
 427 {
 428         struct em28xx_buffer    *buf = dev->usb_ctl.vid_buf;
 429         struct em28xx_dmaqueue  *dmaq = &dev->vidq;
 430         bool frame_end = 0;
 431
 432         /* Check for header */
 433         /* NOTE: at least with bulk transfers, only the first packet
 434          * has a header and has always set the FRAME_END bit         */
 435         if (data_len >= 2) {    /* em25xx header is only 2 bytes long */
 436                 if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) &&
 437                     ((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) {
 438                         dev->top_field = !(data_pkt[1] &
 439                                            EM25XX_FRMDATAHDR_BYTE2_FRAME_ID);
 440                         frame_end = data_pkt[1] &
 441                                     EM25XX_FRMDATAHDR_BYTE2_FRAME_END;
 442                         data_pkt += 2;
 443                         data_len -= 2;
 444                 }
 445
 446                 /* Finish field and prepare next (BULK only) */
 447                 if (dev->analog_xfer_bulk && frame_end) {
 448                         buf = finish_field_prepare_next(dev, buf, dmaq);
 449                         dev->usb_ctl.vid_buf = buf;
 450                 }
 451                 /* NOTE: in ISOC mode when a new frame starts and buf==NULL,
 452                  * we COULD already prepare a buffer here to avoid skipping the
 453                  * first frame.
 454                  */
 455         }
 456
 457         /* Copy data */
 458         if (buf != NULL && data_len > 0)
 459                 em28xx_copy_video(dev, buf, data_pkt, data_len);
 460
 461         /* Finish frame (ISOC only) => avoids lag of 1 frame */
 462         if (!dev->analog_xfer_bulk && frame_end) {
 463                 buf = finish_field_prepare_next(dev, buf, dmaq);
 464                 dev->usb_ctl.vid_buf = buf;
 465         }
 466
 467         /* NOTE: Tested with USB bulk transfers only !
 468          * The wording in the datasheet suggests that isoc might work different.
 469          * The current code assumes that with isoc transfers each packet has a
 470          * header like with the other em28xx devices.
 471          */
 472         /* NOTE: Support for interlaced mode is pure theory. It has not been
 473          * tested and it is unknown if these devices actually support it. */
 474         /* NOTE: No VBI support yet (these chips likely do not support VBI). */
 475 }
 476
 477 /* Processes and copies the URB data content (video and VBI data) */
 478 static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb)
 479 {
 480         int xfer_bulk, num_packets, i;
 481         unsigned char *usb_data_pkt;
 482         unsigned int usb_data_len;
 483
 484         if (!dev)
 485                 return 0;
 486
 487         if (dev->disconnected)
 488                 return 0;
 489
 490         if (urb->status < 0)
 491                 print_err_status(dev, -1, urb->status);
 492
 493         xfer_bulk = usb_pipebulk(urb->pipe);
 494
 495         if (xfer_bulk) /* bulk */
 496                 num_packets = 1;
 497         else /* isoc */
 498                 num_packets = urb->number_of_packets;
 499
 500         for (i = 0; i < num_packets; i++) {
 501                 if (xfer_bulk) { /* bulk */
 502                         usb_data_len = urb->actual_length;
 503
 504                         usb_data_pkt = urb->transfer_buffer;
 505                 } else { /* isoc */
 506                         if (urb->iso_frame_desc[i].status < 0) {
 507                                 print_err_status(dev, i,
 508                                                  urb->iso_frame_desc[i].status);
 509                                 if (urb->iso_frame_desc[i].status != -EPROTO)
 510                                         continue;
 511                         }
 512
 513                         usb_data_len = urb->iso_frame_desc[i].actual_length;
 514                         if (usb_data_len > dev->max_pkt_size) {
 515                                 em28xx_isocdbg("packet bigger than packet size");
 516                                 continue;
 517                         }
 518
 519                         usb_data_pkt = urb->transfer_buffer +
 520                                        urb->iso_frame_desc[i].offset;
 521                 }
 522
 523                 if (usb_data_len == 0) {
 524                         /* NOTE: happens very often with isoc transfers */
 525                         /* em28xx_usbdbg("packet %d is empty",i); - spammy */
 526                         continue;
 527                 }
 528
 529                 if (dev->is_em25xx)
 530                         process_frame_data_em25xx(dev,
 531                                                   usb_data_pkt, usb_data_len);
 532                 else
 533                         process_frame_data_em28xx(dev,
 534                                                   usb_data_pkt, usb_data_len);
 535
 536         }
 537         return 1;
 538 }
 539
 540
 541 static int get_ressource(enum v4l2_buf_type f_type)
 542 {
 543         switch (f_type) {
 544         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 545                 return EM28XX_RESOURCE_VIDEO;
 546         case V4L2_BUF_TYPE_VBI_CAPTURE:
 547                 return EM28XX_RESOURCE_VBI;
 548         default:
 549                 BUG();
 550                 return 0;
 551         }
 552 }
 553
 554 /* Usage lock check functions */
 555 static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type)
 556 {
 557         int res_type = get_ressource(f_type);
 558
 559         /* is it free? */
 560         if (dev->resources & res_type) {
 561                 /* no, someone else uses it */
 562                 return -EBUSY;
 563         }
 564
 565         /* it's free, grab it */
 566         dev->resources |= res_type;
 567         em28xx_videodbg("res: get %d\n", res_type);
 568         return 0;
 569 }
 570
 571 static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type)
 572 {
 573         int res_type = get_ressource(f_type);
 574
 575         dev->resources &= ~res_type;
 576         em28xx_videodbg("res: put %d\n", res_type);
 577 }
 578
 579 /* ------------------------------------------------------------------
 580         Videobuf2 operations
 581    ------------------------------------------------------------------*/
 582
 583 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
 584                        unsigned int *nbuffers, unsigned int *nplanes,
 585                        unsigned int sizes[], void *alloc_ctxs[])
 586 {
 587         struct em28xx *dev = vb2_get_drv_priv(vq);
 588         unsigned long size;
 589
 590         if (fmt)
 591                 size = fmt->fmt.pix.sizeimage;
 592         else
 593                 size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
 594
 595         if (size == 0)
 596                 return -EINVAL;
 597
 598         if (0 == *nbuffers)
 599                 *nbuffers = 32;
 600
 601         *nplanes = 1;
 602         sizes[0] = size;
 603
 604         return 0;
 605 }
 606
 607 static int
 608 buffer_prepare(struct vb2_buffer *vb)
 609 {
 610         struct em28xx        *dev = vb2_get_drv_priv(vb->vb2_queue);
 611         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 612         unsigned long size;
 613
 614         em28xx_videodbg("%s, field=%d\n", __func__, vb->v4l2_buf.field);
 615
 616         size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
 617
 618         if (vb2_plane_size(vb, 0) < size) {
 619                 em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n",
 620                                 __func__, vb2_plane_size(vb, 0), size);
 621                 return -EINVAL;
 622         }
 623         vb2_set_plane_payload(&buf->vb, 0, size);
 624
 625         return 0;
 626 }
 627
 628 int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
 629 {
 630         struct em28xx *dev = vb2_get_drv_priv(vq);
 631         struct v4l2_frequency f;
 632         int rc = 0;
 633
 634         em28xx_videodbg("%s\n", __func__);
 635
 636         /* Make sure streaming is not already in progress for this type
 637            of filehandle (e.g. video, vbi) */
 638         rc = res_get(dev, vq->type);
 639         if (rc)
 640                 return rc;
 641
 642         if (dev->streaming_users++ == 0) {
 643                 /* First active streaming user, so allocate all the URBs */
 644
 645                 /* Allocate the USB bandwidth */
 646                 em28xx_set_alternate(dev);
 647
 648                 /* Needed, since GPIO might have disabled power of
 649                    some i2c device
 650                 */
 651                 em28xx_wake_i2c(dev);
 652
 653                 dev->capture_type = -1;
 654                 rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
 655                                           dev->analog_xfer_bulk,
 656                                           EM28XX_NUM_BUFS,
 657                                           dev->max_pkt_size,
 658                                           dev->packet_multiplier,
 659                                           em28xx_urb_data_copy);
 660                 if (rc < 0)
 661                         goto fail;
 662
 663                 /*
 664                  * djh: it's not clear whether this code is still needed.  I'm
 665                  * leaving it in here for now entirely out of concern for
 666                  * backward compatibility (the old code did it)
 667                  */
 668
 669                 /* Ask tuner to go to analog or radio mode */
 670                 memset(&f, 0, sizeof(f));
 671                 f.frequency = dev->ctl_freq;
 672                 if (vq->owner && vq->owner->vdev->vfl_type == VFL_TYPE_RADIO)
 673                         f.type = V4L2_TUNER_RADIO;
 674                 else
 675                         f.type = V4L2_TUNER_ANALOG_TV;
 676                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
 677         }
 678
 679 fail:
 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
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 static int vidioc_g_chip_ident(struct file *file, void *priv,
1313                struct v4l2_dbg_chip_ident *chip)
1314 {
1315         struct em28xx_fh      *fh  = priv;
1316         struct em28xx         *dev = fh->dev;
1317
1318         chip->ident = V4L2_IDENT_NONE;
1319         chip->revision = 0;
1320         if (chip->match.type == V4L2_CHIP_MATCH_BRIDGE) {
1321                 if (chip->match.addr > 1)
1322                         return -EINVAL;
1323                 return 0;
1324         }
1325         if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1326             chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
1327                 return -EINVAL;
1328
1329         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1330
1331         return 0;
1332 }
1333
1334 #ifdef CONFIG_VIDEO_ADV_DEBUG
1335 static int vidioc_g_chip_info(struct file *file, void *priv,
1336                struct v4l2_dbg_chip_info *chip)
1337 {
1338         struct em28xx_fh      *fh  = priv;
1339         struct em28xx         *dev = fh->dev;
1340
1341         if (chip->match.addr > 1)
1342                 return -EINVAL;
1343         if (chip->match.addr == 1)
1344                 strlcpy(chip->name, "ac97", sizeof(chip->name));
1345         else
1346                 strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name));
1347         return 0;
1348 }
1349
1350 static int em28xx_reg_len(int reg)
1351 {
1352         switch (reg) {
1353         case EM28XX_R40_AC97LSB:
1354         case EM28XX_R30_HSCALELOW:
1355         case EM28XX_R32_VSCALELOW:
1356                 return 2;
1357         default:
1358                 return 1;
1359         }
1360 }
1361
1362 static int vidioc_g_register(struct file *file, void *priv,
1363                              struct v4l2_dbg_register *reg)
1364 {
1365         struct em28xx_fh      *fh  = priv;
1366         struct em28xx         *dev = fh->dev;
1367         int ret;
1368
1369         switch (reg->match.type) {
1370         case V4L2_CHIP_MATCH_BRIDGE:
1371                 if (reg->match.addr > 1)
1372                         return -EINVAL;
1373                 if (!reg->match.addr)
1374                         break;
1375                 /* fall-through */
1376         case V4L2_CHIP_MATCH_AC97:
1377                 ret = em28xx_read_ac97(dev, reg->reg);
1378                 if (ret < 0)
1379                         return ret;
1380
1381                 reg->val = ret;
1382                 reg->size = 1;
1383                 return 0;
1384         case V4L2_CHIP_MATCH_I2C_DRIVER:
1385                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1386                 return 0;
1387         case V4L2_CHIP_MATCH_I2C_ADDR:
1388                 /* TODO: is this correct? */
1389                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1390                 return 0;
1391         default:
1392                 return -EINVAL;
1393         }
1394
1395         /* Match host */
1396         reg->size = em28xx_reg_len(reg->reg);
1397         if (reg->size == 1) {
1398                 ret = em28xx_read_reg(dev, reg->reg);
1399
1400                 if (ret < 0)
1401                         return ret;
1402
1403                 reg->val = ret;
1404         } else {
1405                 __le16 val = 0;
1406                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1407                                                    reg->reg, (char *)&val, 2);
1408                 if (ret < 0)
1409                         return ret;
1410
1411                 reg->val = le16_to_cpu(val);
1412         }
1413
1414         return 0;
1415 }
1416
1417 static int vidioc_s_register(struct file *file, void *priv,
1418                              const struct v4l2_dbg_register *reg)
1419 {
1420         struct em28xx_fh      *fh  = priv;
1421         struct em28xx         *dev = fh->dev;
1422         __le16 buf;
1423
1424         switch (reg->match.type) {
1425         case V4L2_CHIP_MATCH_BRIDGE:
1426                 if (reg->match.addr > 1)
1427                         return -EINVAL;
1428                 if (!reg->match.addr)
1429                         break;
1430                 /* fall-through */
1431         case V4L2_CHIP_MATCH_AC97:
1432                 return em28xx_write_ac97(dev, reg->reg, reg->val);
1433         case V4L2_CHIP_MATCH_I2C_DRIVER:
1434                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1435                 return 0;
1436         case V4L2_CHIP_MATCH_I2C_ADDR:
1437                 /* TODO: is this correct? */
1438                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1439                 return 0;
1440         default:
1441                 return -EINVAL;
1442         }
1443
1444         /* Match host */
1445         buf = cpu_to_le16(reg->val);
1446
1447         return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1448                                em28xx_reg_len(reg->reg));
1449 }
1450 #endif
1451
1452
1453 static int vidioc_querycap(struct file *file, void  *priv,
1454                                         struct v4l2_capability *cap)
1455 {
1456         struct video_device *vdev = video_devdata(file);
1457         struct em28xx_fh      *fh  = priv;
1458         struct em28xx         *dev = fh->dev;
1459
1460         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1461         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1462         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1463
1464         if (vdev->vfl_type == VFL_TYPE_GRABBER)
1465                 cap->device_caps = V4L2_CAP_READWRITE |
1466                         V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1467         else if (vdev->vfl_type == VFL_TYPE_RADIO)
1468                 cap->device_caps = V4L2_CAP_RADIO;
1469         else
1470                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
1471
1472         if (dev->audio_mode.has_audio)
1473                 cap->device_caps |= V4L2_CAP_AUDIO;
1474
1475         if (dev->tuner_type != TUNER_ABSENT)
1476                 cap->device_caps |= V4L2_CAP_TUNER;
1477
1478         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1479                 V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1480         if (dev->vbi_dev)
1481                 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1482         if (dev->radio_dev)
1483                 cap->capabilities |= V4L2_CAP_RADIO;
1484         return 0;
1485 }
1486
1487 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1488                                         struct v4l2_fmtdesc *f)
1489 {
1490         if (unlikely(f->index >= ARRAY_SIZE(format)))
1491                 return -EINVAL;
1492
1493         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1494         f->pixelformat = format[f->index].fourcc;
1495
1496         return 0;
1497 }
1498
1499 static int vidioc_enum_framesizes(struct file *file, void *priv,
1500                                   struct v4l2_frmsizeenum *fsize)
1501 {
1502         struct em28xx_fh      *fh  = priv;
1503         struct em28xx         *dev = fh->dev;
1504         struct em28xx_fmt     *fmt;
1505         unsigned int          maxw = norm_maxw(dev);
1506         unsigned int          maxh = norm_maxh(dev);
1507
1508         fmt = format_by_fourcc(fsize->pixel_format);
1509         if (!fmt) {
1510                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1511                                 fsize->pixel_format);
1512                 return -EINVAL;
1513         }
1514
1515         if (dev->board.is_em2800) {
1516                 if (fsize->index > 1)
1517                         return -EINVAL;
1518                 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1519                 fsize->discrete.width = maxw / (1 + fsize->index);
1520                 fsize->discrete.height = maxh / (1 + fsize->index);
1521                 return 0;
1522         }
1523
1524         if (fsize->index != 0)
1525                 return -EINVAL;
1526
1527         /* Report a continuous range */
1528         fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1529         scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX,
1530                       &fsize->stepwise.min_width, &fsize->stepwise.min_height);
1531         if (fsize->stepwise.min_width < 48)
1532                 fsize->stepwise.min_width = 48;
1533         if (fsize->stepwise.min_height < 38)
1534                 fsize->stepwise.min_height = 38;
1535         fsize->stepwise.max_width = maxw;
1536         fsize->stepwise.max_height = maxh;
1537         fsize->stepwise.step_width = 1;
1538         fsize->stepwise.step_height = 1;
1539         return 0;
1540 }
1541
1542 /* RAW VBI ioctls */
1543
1544 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1545                                 struct v4l2_format *format)
1546 {
1547         struct em28xx_fh      *fh  = priv;
1548         struct em28xx         *dev = fh->dev;
1549
1550         format->fmt.vbi.samples_per_line = dev->vbi_width;
1551         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1552         format->fmt.vbi.offset = 0;
1553         format->fmt.vbi.flags = 0;
1554         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1555         format->fmt.vbi.count[0] = dev->vbi_height;
1556         format->fmt.vbi.count[1] = dev->vbi_height;
1557         memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1558
1559         /* Varies by video standard (NTSC, PAL, etc.) */
1560         if (dev->norm & V4L2_STD_525_60) {
1561                 /* NTSC */
1562                 format->fmt.vbi.start[0] = 10;
1563                 format->fmt.vbi.start[1] = 273;
1564         } else if (dev->norm & V4L2_STD_625_50) {
1565                 /* PAL */
1566                 format->fmt.vbi.start[0] = 6;
1567                 format->fmt.vbi.start[1] = 318;
1568         }
1569
1570         return 0;
1571 }
1572
1573 /* ----------------------------------------------------------- */
1574 /* RADIO ESPECIFIC IOCTLS                                      */
1575 /* ----------------------------------------------------------- */
1576
1577 static int radio_g_tuner(struct file *file, void *priv,
1578                          struct v4l2_tuner *t)
1579 {
1580         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1581
1582         if (unlikely(t->index > 0))
1583                 return -EINVAL;
1584
1585         strcpy(t->name, "Radio");
1586
1587         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1588
1589         return 0;
1590 }
1591
1592 static int radio_s_tuner(struct file *file, void *priv,
1593                          const struct v4l2_tuner *t)
1594 {
1595         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1596
1597         if (0 != t->index)
1598                 return -EINVAL;
1599
1600         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1601
1602         return 0;
1603 }
1604
1605 /*
1606  * em28xx_v4l2_open()
1607  * inits the device and starts isoc transfer
1608  */
1609 static int em28xx_v4l2_open(struct file *filp)
1610 {
1611         struct video_device *vdev = video_devdata(filp);
1612         struct em28xx *dev = video_drvdata(filp);
1613         enum v4l2_buf_type fh_type = 0;
1614         struct em28xx_fh *fh;
1615
1616         switch (vdev->vfl_type) {
1617         case VFL_TYPE_GRABBER:
1618                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1619                 break;
1620         case VFL_TYPE_VBI:
1621                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1622                 break;
1623         }
1624
1625         em28xx_videodbg("open dev=%s type=%s users=%d\n",
1626                         video_device_node_name(vdev), v4l2_type_names[fh_type],
1627                         dev->users);
1628
1629
1630         if (mutex_lock_interruptible(&dev->lock))
1631                 return -ERESTARTSYS;
1632         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1633         if (!fh) {
1634                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1635                 mutex_unlock(&dev->lock);
1636                 return -ENOMEM;
1637         }
1638         v4l2_fh_init(&fh->fh, vdev);
1639         fh->dev = dev;
1640         fh->type = fh_type;
1641         filp->private_data = fh;
1642
1643         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1644                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1645                 em28xx_resolution_set(dev);
1646
1647                 /* Needed, since GPIO might have disabled power of
1648                    some i2c device
1649                  */
1650                 em28xx_wake_i2c(dev);
1651
1652         }
1653
1654         if (vdev->vfl_type == VFL_TYPE_RADIO) {
1655                 em28xx_videodbg("video_open: setting radio device\n");
1656                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1657         }
1658
1659         dev->users++;
1660
1661         mutex_unlock(&dev->lock);
1662         v4l2_fh_add(&fh->fh);
1663
1664         return 0;
1665 }
1666
1667 /*
1668  * em28xx_realease_resources()
1669  * unregisters the v4l2,i2c and usb devices
1670  * called when the device gets disconected or at module unload
1671 */
1672 void em28xx_release_analog_resources(struct em28xx *dev)
1673 {
1674
1675         /*FIXME: I2C IR should be disconnected */
1676
1677         if (dev->radio_dev) {
1678                 if (video_is_registered(dev->radio_dev))
1679                         video_unregister_device(dev->radio_dev);
1680                 else
1681                         video_device_release(dev->radio_dev);
1682                 dev->radio_dev = NULL;
1683         }
1684         if (dev->vbi_dev) {
1685                 em28xx_info("V4L2 device %s deregistered\n",
1686                             video_device_node_name(dev->vbi_dev));
1687                 if (video_is_registered(dev->vbi_dev))
1688                         video_unregister_device(dev->vbi_dev);
1689                 else
1690                         video_device_release(dev->vbi_dev);
1691                 dev->vbi_dev = NULL;
1692         }
1693         if (dev->vdev) {
1694                 em28xx_info("V4L2 device %s deregistered\n",
1695                             video_device_node_name(dev->vdev));
1696                 if (video_is_registered(dev->vdev))
1697                         video_unregister_device(dev->vdev);
1698                 else
1699                         video_device_release(dev->vdev);
1700                 dev->vdev = NULL;
1701         }
1702 }
1703
1704 /*
1705  * em28xx_v4l2_close()
1706  * stops streaming and deallocates all resources allocated by the v4l2
1707  * calls and ioctls
1708  */
1709 static int em28xx_v4l2_close(struct file *filp)
1710 {
1711         struct em28xx_fh *fh  = filp->private_data;
1712         struct em28xx    *dev = fh->dev;
1713         int              errCode;
1714
1715         em28xx_videodbg("users=%d\n", dev->users);
1716
1717         mutex_lock(&dev->lock);
1718         vb2_fop_release(filp);
1719
1720         if (dev->users == 1) {
1721                 /* the device is already disconnect,
1722                    free the remaining resources */
1723                 if (dev->disconnected) {
1724                         em28xx_release_resources(dev);
1725                         kfree(dev->alt_max_pkt_size_isoc);
1726                         mutex_unlock(&dev->lock);
1727                         kfree(dev);
1728                         return 0;
1729                 }
1730
1731                 /* Save some power by putting tuner to sleep */
1732                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
1733
1734                 /* do this before setting alternate! */
1735                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1736
1737                 /* set alternate 0 */
1738                 dev->alt = 0;
1739                 em28xx_videodbg("setting alternate 0\n");
1740                 errCode = usb_set_interface(dev->udev, 0, 0);
1741                 if (errCode < 0) {
1742                         em28xx_errdev("cannot change alternate number to "
1743                                         "0 (error=%i)\n", errCode);
1744                 }
1745         }
1746
1747         dev->users--;
1748         mutex_unlock(&dev->lock);
1749         return 0;
1750 }
1751
1752 static const struct v4l2_file_operations em28xx_v4l_fops = {
1753         .owner         = THIS_MODULE,
1754         .open          = em28xx_v4l2_open,
1755         .release       = em28xx_v4l2_close,
1756         .read          = vb2_fop_read,
1757         .poll          = vb2_fop_poll,
1758         .mmap          = vb2_fop_mmap,
1759         .unlocked_ioctl = video_ioctl2,
1760 };
1761
1762 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1763         .vidioc_querycap            = vidioc_querycap,
1764         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1765         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1766         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1767         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1768         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1769         .vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
1770         .vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1771         .vidioc_enum_framesizes     = vidioc_enum_framesizes,
1772         .vidioc_g_audio             = vidioc_g_audio,
1773         .vidioc_s_audio             = vidioc_s_audio,
1774
1775         .vidioc_reqbufs             = vb2_ioctl_reqbufs,
1776         .vidioc_create_bufs         = vb2_ioctl_create_bufs,
1777         .vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
1778         .vidioc_querybuf            = vb2_ioctl_querybuf,
1779         .vidioc_qbuf                = vb2_ioctl_qbuf,
1780         .vidioc_dqbuf               = vb2_ioctl_dqbuf,
1781
1782         .vidioc_g_std               = vidioc_g_std,
1783         .vidioc_querystd            = vidioc_querystd,
1784         .vidioc_s_std               = vidioc_s_std,
1785         .vidioc_g_parm              = vidioc_g_parm,
1786         .vidioc_s_parm              = vidioc_s_parm,
1787         .vidioc_enum_input          = vidioc_enum_input,
1788         .vidioc_g_input             = vidioc_g_input,
1789         .vidioc_s_input             = vidioc_s_input,
1790         .vidioc_streamon            = vb2_ioctl_streamon,
1791         .vidioc_streamoff           = vb2_ioctl_streamoff,
1792         .vidioc_g_tuner             = vidioc_g_tuner,
1793         .vidioc_s_tuner             = vidioc_s_tuner,
1794         .vidioc_g_frequency         = vidioc_g_frequency,
1795         .vidioc_s_frequency         = vidioc_s_frequency,
1796         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1797         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1798         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
1799 #ifdef CONFIG_VIDEO_ADV_DEBUG
1800         .vidioc_g_chip_info         = vidioc_g_chip_info,
1801         .vidioc_g_register          = vidioc_g_register,
1802         .vidioc_s_register          = vidioc_s_register,
1803 #endif
1804 };
1805
1806 static const struct video_device em28xx_video_template = {
1807         .fops                       = &em28xx_v4l_fops,
1808         .release                    = video_device_release_empty,
1809         .ioctl_ops                  = &video_ioctl_ops,
1810
1811         .tvnorms                    = V4L2_STD_ALL,
1812 };
1813
1814 static const struct v4l2_file_operations radio_fops = {
1815         .owner         = THIS_MODULE,
1816         .open          = em28xx_v4l2_open,
1817         .release       = em28xx_v4l2_close,
1818         .unlocked_ioctl = video_ioctl2,
1819 };
1820
1821 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1822         .vidioc_querycap      = vidioc_querycap,
1823         .vidioc_g_tuner       = radio_g_tuner,
1824         .vidioc_s_tuner       = radio_s_tuner,
1825         .vidioc_g_frequency   = vidioc_g_frequency,
1826         .vidioc_s_frequency   = vidioc_s_frequency,
1827         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1828         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1829         .vidioc_g_chip_ident  = vidioc_g_chip_ident,
1830 #ifdef CONFIG_VIDEO_ADV_DEBUG
1831         .vidioc_g_chip_info   = vidioc_g_chip_info,
1832         .vidioc_g_register    = vidioc_g_register,
1833         .vidioc_s_register    = vidioc_s_register,
1834 #endif
1835 };
1836
1837 static struct video_device em28xx_radio_template = {
1838         .name                 = "em28xx-radio",
1839         .fops                 = &radio_fops,
1840         .ioctl_ops            = &radio_ioctl_ops,
1841 };
1842
1843 /******************************** usb interface ******************************/
1844
1845
1846
1847 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1848                                         const struct video_device *template,
1849                                         const char *type_name)
1850 {
1851         struct video_device *vfd;
1852
1853         vfd = video_device_alloc();
1854         if (NULL == vfd)
1855                 return NULL;
1856
1857         *vfd            = *template;
1858         vfd->v4l2_dev   = &dev->v4l2_dev;
1859         vfd->debug      = video_debug;
1860         vfd->lock       = &dev->lock;
1861         set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1862         if (dev->board.is_webcam)
1863                 vfd->tvnorms = 0;
1864
1865         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1866                  dev->name, type_name);
1867
1868         video_set_drvdata(vfd, dev);
1869         return vfd;
1870 }
1871
1872 int em28xx_register_analog_devices(struct em28xx *dev)
1873 {
1874         u8 val;
1875         int ret;
1876         unsigned int maxw;
1877
1878         printk(KERN_INFO "%s: v4l2 driver version %s\n",
1879                 dev->name, EM28XX_VERSION);
1880
1881         /* set default norm */
1882         dev->norm = V4L2_STD_PAL;
1883         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1884         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1885
1886         /* Analog specific initialization */
1887         dev->format = &format[0];
1888
1889         maxw = norm_maxw(dev);
1890         /* MaxPacketSize for em2800 is too small to capture at full resolution
1891          * use half of maxw as the scaler can only scale to 50% */
1892         if (dev->board.is_em2800)
1893                 maxw /= 2;
1894
1895         em28xx_set_video_format(dev, format[0].fourcc,
1896                                 maxw, norm_maxh(dev));
1897
1898         video_mux(dev, 0);
1899
1900         /* Audio defaults */
1901         dev->mute = 1;
1902         dev->volume = 0x1f;
1903
1904 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
1905         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
1906         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
1907                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
1908
1909         em28xx_set_outfmt(dev);
1910         em28xx_compression_disable(dev);
1911
1912         /* Add image controls */
1913         /* NOTE: at this point, the subdevices are already registered, so bridge
1914          * controls are only added/enabled when no subdevice provides them */
1915         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_CONTRAST))
1916                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1917                                   V4L2_CID_CONTRAST,
1918                                   0, 0x1f, 1, CONTRAST_DEFAULT);
1919         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BRIGHTNESS))
1920                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1921                                   V4L2_CID_BRIGHTNESS,
1922                                   -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT);
1923         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SATURATION))
1924                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1925                                   V4L2_CID_SATURATION,
1926                                   0, 0x1f, 1, SATURATION_DEFAULT);
1927         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BLUE_BALANCE))
1928                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1929                                   V4L2_CID_BLUE_BALANCE,
1930                                   -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT);
1931         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_RED_BALANCE))
1932                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1933                                   V4L2_CID_RED_BALANCE,
1934                                   -0x30, 0x30, 1, RED_BALANCE_DEFAULT);
1935         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SHARPNESS))
1936                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1937                                   V4L2_CID_SHARPNESS,
1938                                   0, 0x0f, 1, SHARPNESS_DEFAULT);
1939
1940         /* Reset image controls */
1941         em28xx_colorlevels_set_default(dev);
1942         v4l2_ctrl_handler_setup(&dev->ctrl_handler);
1943         if (dev->ctrl_handler.error)
1944                 return dev->ctrl_handler.error;
1945
1946         /* allocate and fill video video_device struct */
1947         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
1948         if (!dev->vdev) {
1949                 em28xx_errdev("cannot allocate video_device.\n");
1950                 return -ENODEV;
1951         }
1952         dev->vdev->queue = &dev->vb_vidq;
1953         dev->vdev->queue->lock = &dev->vb_queue_lock;
1954
1955         /* disable inapplicable ioctls */
1956         if (dev->board.is_webcam) {
1957                 v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD);
1958                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD);
1959                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD);
1960         } else {
1961                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1962         }
1963         if (dev->tuner_type == TUNER_ABSENT) {
1964                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_TUNER);
1965                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_TUNER);
1966                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_FREQUENCY);
1967                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_FREQUENCY);
1968         }
1969         if (!dev->audio_mode.has_audio) {
1970                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_AUDIO);
1971                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_AUDIO);
1972         }
1973
1974         /* register v4l2 video video_device */
1975         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
1976                                        video_nr[dev->devno]);
1977         if (ret) {
1978                 em28xx_errdev("unable to register video device (error=%i).\n",
1979                               ret);
1980                 return ret;
1981         }
1982
1983         /* Allocate and fill vbi video_device struct */
1984         if (em28xx_vbi_supported(dev) == 1) {
1985                 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
1986                                                 "vbi");
1987
1988                 dev->vbi_dev->queue = &dev->vb_vbiq;
1989                 dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
1990
1991                 /* disable inapplicable ioctls */
1992                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1993                 if (dev->tuner_type == TUNER_ABSENT) {
1994                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER);
1995                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER);
1996                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_FREQUENCY);
1997                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_FREQUENCY);
1998                 }
1999                 if (!dev->audio_mode.has_audio) {
2000                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_AUDIO);
2001                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_AUDIO);
2002                 }
2003
2004                 /* register v4l2 vbi video_device */
2005                 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2006                                             vbi_nr[dev->devno]);
2007                 if (ret < 0) {
2008                         em28xx_errdev("unable to register vbi device\n");
2009                         return ret;
2010                 }
2011         }
2012
2013         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2014                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2015                                                   "radio");
2016                 if (!dev->radio_dev) {
2017                         em28xx_errdev("cannot allocate video_device.\n");
2018                         return -ENODEV;
2019                 }
2020                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2021                                             radio_nr[dev->devno]);
2022                 if (ret < 0) {
2023                         em28xx_errdev("can't register radio device\n");
2024                         return ret;
2025                 }
2026                 em28xx_info("Registered radio device as %s\n",
2027                             video_device_node_name(dev->radio_dev));
2028         }
2029
2030         em28xx_info("V4L2 video device registered as %s\n",
2031                     video_device_node_name(dev->vdev));
2032
2033         if (dev->vbi_dev)
2034                 em28xx_info("V4L2 VBI device registered as %s\n",
2035                             video_device_node_name(dev->vbi_dev));
2036
2037         return 0;
2038 }