linux/drivers/media/usb/cx231xx/cx231xx-video.c
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   1/*
   2   cx231xx-video.c - driver for Conexant Cx23100/101/102
   3                     USB video capture devices
   4
   5   Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   6        Based on em28xx driver
   7        Based on cx23885 driver
   8        Based on cx88 driver
   9
  10   This program is free software; you can redistribute it and/or modify
  11   it under the terms of the GNU General Public License as published by
  12   the Free Software Foundation; either version 2 of the License, or
  13   (at your option) any later version.
  14
  15   This program is distributed in the hope that it will be useful,
  16   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18   GNU General Public License for more details.
  19
  20   You should have received a copy of the GNU General Public License
  21   along with this program; if not, write to the Free Software
  22   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 */
  24
  25#include <linux/init.h>
  26#include <linux/list.h>
  27#include <linux/module.h>
  28#include <linux/kernel.h>
  29#include <linux/bitmap.h>
  30#include <linux/usb.h>
  31#include <linux/i2c.h>
  32#include <linux/mm.h>
  33#include <linux/mutex.h>
  34#include <linux/slab.h>
  35
  36#include <media/v4l2-common.h>
  37#include <media/v4l2-ioctl.h>
  38#include <media/v4l2-event.h>
  39#include <media/msp3400.h>
  40#include <media/tuner.h>
  41
  42#include "dvb_frontend.h"
  43
  44#include "cx231xx.h"
  45#include "cx231xx-vbi.h"
  46
  47#define CX231XX_VERSION "0.0.2"
  48
  49#define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  50#define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  51
  52#define cx231xx_videodbg(fmt, arg...) do {\
  53        if (video_debug) \
  54                printk(KERN_INFO "%s %s :"fmt, \
  55                         dev->name, __func__ , ##arg); } while (0)
  56
  57static unsigned int isoc_debug;
  58module_param(isoc_debug, int, 0644);
  59MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  60
  61#define cx231xx_isocdbg(fmt, arg...) \
  62do {\
  63        if (isoc_debug) { \
  64                printk(KERN_INFO "%s %s :"fmt, \
  65                         dev->name, __func__ , ##arg); \
  66        } \
  67  } while (0)
  68
  69MODULE_AUTHOR(DRIVER_AUTHOR);
  70MODULE_DESCRIPTION(DRIVER_DESC);
  71MODULE_LICENSE("GPL");
  72MODULE_VERSION(CX231XX_VERSION);
  73
  74static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  75static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  76static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  77static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  78
  79module_param_array(card, int, NULL, 0444);
  80module_param_array(video_nr, int, NULL, 0444);
  81module_param_array(vbi_nr, int, NULL, 0444);
  82module_param_array(radio_nr, int, NULL, 0444);
  83
  84MODULE_PARM_DESC(card, "card type");
  85MODULE_PARM_DESC(video_nr, "video device numbers");
  86MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  87MODULE_PARM_DESC(radio_nr, "radio device numbers");
  88
  89static unsigned int video_debug;
  90module_param(video_debug, int, 0644);
  91MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  92
  93/* supported video standards */
  94static struct cx231xx_fmt format[] = {
  95        {
  96         .name = "16bpp YUY2, 4:2:2, packed",
  97         .fourcc = V4L2_PIX_FMT_YUYV,
  98         .depth = 16,
  99         .reg = 0,
 100         },
 101};
 102
 103
 104/* ------------------------------------------------------------------
 105        Video buffer and parser functions
 106   ------------------------------------------------------------------*/
 107
 108/*
 109 * Announces that a buffer were filled and request the next
 110 */
 111static inline void buffer_filled(struct cx231xx *dev,
 112                                 struct cx231xx_dmaqueue *dma_q,
 113                                 struct cx231xx_buffer *buf)
 114{
 115        /* Advice that buffer was filled */
 116        cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 117        buf->vb.state = VIDEOBUF_DONE;
 118        buf->vb.field_count++;
 119        v4l2_get_timestamp(&buf->vb.ts);
 120
 121        if (dev->USE_ISO)
 122                dev->video_mode.isoc_ctl.buf = NULL;
 123        else
 124                dev->video_mode.bulk_ctl.buf = NULL;
 125
 126        list_del(&buf->vb.queue);
 127        wake_up(&buf->vb.done);
 128}
 129
 130static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 131{
 132        char *errmsg = "Unknown";
 133
 134        switch (status) {
 135        case -ENOENT:
 136                errmsg = "unlinked synchronuously";
 137                break;
 138        case -ECONNRESET:
 139                errmsg = "unlinked asynchronuously";
 140                break;
 141        case -ENOSR:
 142                errmsg = "Buffer error (overrun)";
 143                break;
 144        case -EPIPE:
 145                errmsg = "Stalled (device not responding)";
 146                break;
 147        case -EOVERFLOW:
 148                errmsg = "Babble (bad cable?)";
 149                break;
 150        case -EPROTO:
 151                errmsg = "Bit-stuff error (bad cable?)";
 152                break;
 153        case -EILSEQ:
 154                errmsg = "CRC/Timeout (could be anything)";
 155                break;
 156        case -ETIME:
 157                errmsg = "Device does not respond";
 158                break;
 159        }
 160        if (packet < 0) {
 161                cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 162        } else {
 163                cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 164                                packet, status, errmsg);
 165        }
 166}
 167
 168/*
 169 * video-buf generic routine to get the next available buffer
 170 */
 171static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 172                                struct cx231xx_buffer **buf)
 173{
 174        struct cx231xx_video_mode *vmode =
 175            container_of(dma_q, struct cx231xx_video_mode, vidq);
 176        struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 177
 178        char *outp;
 179
 180        if (list_empty(&dma_q->active)) {
 181                cx231xx_isocdbg("No active queue to serve\n");
 182                if (dev->USE_ISO)
 183                        dev->video_mode.isoc_ctl.buf = NULL;
 184                else
 185                        dev->video_mode.bulk_ctl.buf = NULL;
 186                *buf = NULL;
 187                return;
 188        }
 189
 190        /* Get the next buffer */
 191        *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 192
 193        /* Cleans up buffer - Useful for testing for frame/URB loss */
 194        outp = videobuf_to_vmalloc(&(*buf)->vb);
 195        memset(outp, 0, (*buf)->vb.size);
 196
 197        if (dev->USE_ISO)
 198                dev->video_mode.isoc_ctl.buf = *buf;
 199        else
 200                dev->video_mode.bulk_ctl.buf = *buf;
 201
 202        return;
 203}
 204
 205/*
 206 * Controls the isoc copy of each urb packet
 207 */
 208static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 209{
 210        struct cx231xx_dmaqueue *dma_q = urb->context;
 211        int i, rc = 1;
 212        unsigned char *p_buffer;
 213        u32 bytes_parsed = 0, buffer_size = 0;
 214        u8 sav_eav = 0;
 215
 216        if (!dev)
 217                return 0;
 218
 219        if (dev->state & DEV_DISCONNECTED)
 220                return 0;
 221
 222        if (urb->status < 0) {
 223                print_err_status(dev, -1, urb->status);
 224                if (urb->status == -ENOENT)
 225                        return 0;
 226        }
 227
 228        for (i = 0; i < urb->number_of_packets; i++) {
 229                int status = urb->iso_frame_desc[i].status;
 230
 231                if (status < 0) {
 232                        print_err_status(dev, i, status);
 233                        if (urb->iso_frame_desc[i].status != -EPROTO)
 234                                continue;
 235                }
 236
 237                if (urb->iso_frame_desc[i].actual_length <= 0) {
 238                        /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 239                        continue;
 240                }
 241                if (urb->iso_frame_desc[i].actual_length >
 242                    dev->video_mode.max_pkt_size) {
 243                        cx231xx_isocdbg("packet bigger than packet size");
 244                        continue;
 245                }
 246
 247                /*  get buffer pointer and length */
 248                p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 249                buffer_size = urb->iso_frame_desc[i].actual_length;
 250                bytes_parsed = 0;
 251
 252                if (dma_q->is_partial_line) {
 253                        /* Handle the case of a partial line */
 254                        sav_eav = dma_q->last_sav;
 255                } else {
 256                        /* Check for a SAV/EAV overlapping
 257                                the buffer boundary */
 258                        sav_eav =
 259                            cx231xx_find_boundary_SAV_EAV(p_buffer,
 260                                                          dma_q->partial_buf,
 261                                                          &bytes_parsed);
 262                }
 263
 264                sav_eav &= 0xF0;
 265                /* Get the first line if we have some portion of an SAV/EAV from
 266                   the last buffer or a partial line  */
 267                if (sav_eav) {
 268                        bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 269                                sav_eav,        /* SAV/EAV */
 270                                p_buffer + bytes_parsed,        /* p_buffer */
 271                                buffer_size - bytes_parsed);/* buf size */
 272                }
 273
 274                /* Now parse data that is completely in this buffer */
 275                /* dma_q->is_partial_line = 0;  */
 276
 277                while (bytes_parsed < buffer_size) {
 278                        u32 bytes_used = 0;
 279
 280                        sav_eav = cx231xx_find_next_SAV_EAV(
 281                                p_buffer + bytes_parsed,        /* p_buffer */
 282                                buffer_size - bytes_parsed,     /* buf size */
 283                                &bytes_used);/* bytes used to get SAV/EAV */
 284
 285                        bytes_parsed += bytes_used;
 286
 287                        sav_eav &= 0xF0;
 288                        if (sav_eav && (bytes_parsed < buffer_size)) {
 289                                bytes_parsed += cx231xx_get_video_line(dev,
 290                                        dma_q, sav_eav, /* SAV/EAV */
 291                                        p_buffer + bytes_parsed,/* p_buffer */
 292                                        buffer_size - bytes_parsed);/*buf size*/
 293                        }
 294                }
 295
 296                /* Save the last four bytes of the buffer so we can check the
 297                   buffer boundary condition next time */
 298                memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 299                bytes_parsed = 0;
 300
 301        }
 302        return rc;
 303}
 304
 305static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 306{
 307        struct cx231xx_dmaqueue *dma_q = urb->context;
 308        int rc = 1;
 309        unsigned char *p_buffer;
 310        u32 bytes_parsed = 0, buffer_size = 0;
 311        u8 sav_eav = 0;
 312
 313        if (!dev)
 314                return 0;
 315
 316        if (dev->state & DEV_DISCONNECTED)
 317                return 0;
 318
 319        if (urb->status < 0) {
 320                print_err_status(dev, -1, urb->status);
 321                if (urb->status == -ENOENT)
 322                        return 0;
 323        }
 324
 325        if (1) {
 326
 327                /*  get buffer pointer and length */
 328                p_buffer = urb->transfer_buffer;
 329                buffer_size = urb->actual_length;
 330                bytes_parsed = 0;
 331
 332                if (dma_q->is_partial_line) {
 333                        /* Handle the case of a partial line */
 334                        sav_eav = dma_q->last_sav;
 335                } else {
 336                        /* Check for a SAV/EAV overlapping
 337                                the buffer boundary */
 338                        sav_eav =
 339                            cx231xx_find_boundary_SAV_EAV(p_buffer,
 340                                                          dma_q->partial_buf,
 341                                                          &bytes_parsed);
 342                }
 343
 344                sav_eav &= 0xF0;
 345                /* Get the first line if we have some portion of an SAV/EAV from
 346                   the last buffer or a partial line  */
 347                if (sav_eav) {
 348                        bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 349                                sav_eav,        /* SAV/EAV */
 350                                p_buffer + bytes_parsed,        /* p_buffer */
 351                                buffer_size - bytes_parsed);/* buf size */
 352                }
 353
 354                /* Now parse data that is completely in this buffer */
 355                /* dma_q->is_partial_line = 0;  */
 356
 357                while (bytes_parsed < buffer_size) {
 358                        u32 bytes_used = 0;
 359
 360                        sav_eav = cx231xx_find_next_SAV_EAV(
 361                                p_buffer + bytes_parsed,        /* p_buffer */
 362                                buffer_size - bytes_parsed,     /* buf size */
 363                                &bytes_used);/* bytes used to get SAV/EAV */
 364
 365                        bytes_parsed += bytes_used;
 366
 367                        sav_eav &= 0xF0;
 368                        if (sav_eav && (bytes_parsed < buffer_size)) {
 369                                bytes_parsed += cx231xx_get_video_line(dev,
 370                                        dma_q, sav_eav, /* SAV/EAV */
 371                                        p_buffer + bytes_parsed,/* p_buffer */
 372                                        buffer_size - bytes_parsed);/*buf size*/
 373                        }
 374                }
 375
 376                /* Save the last four bytes of the buffer so we can check the
 377                   buffer boundary condition next time */
 378                memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 379                bytes_parsed = 0;
 380
 381        }
 382        return rc;
 383}
 384
 385
 386u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 387                                 u32 *p_bytes_used)
 388{
 389        u32 bytes_used;
 390        u8 boundary_bytes[8];
 391        u8 sav_eav = 0;
 392
 393        *p_bytes_used = 0;
 394
 395        /* Create an array of the last 4 bytes of the last buffer and the first
 396           4 bytes of the current buffer. */
 397
 398        memcpy(boundary_bytes, partial_buf, 4);
 399        memcpy(boundary_bytes + 4, p_buffer, 4);
 400
 401        /* Check for the SAV/EAV in the boundary buffer */
 402        sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 403                                            &bytes_used);
 404
 405        if (sav_eav) {
 406                /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 407                   only those used in the new buffer */
 408                *p_bytes_used = bytes_used - 4;
 409        }
 410
 411        return sav_eav;
 412}
 413
 414u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 415{
 416        u32 i;
 417        u8 sav_eav = 0;
 418
 419        /*
 420         * Don't search if the buffer size is less than 4.  It causes a page
 421         * fault since buffer_size - 4 evaluates to a large number in that
 422         * case.
 423         */
 424        if (buffer_size < 4) {
 425                *p_bytes_used = buffer_size;
 426                return 0;
 427        }
 428
 429        for (i = 0; i < (buffer_size - 3); i++) {
 430
 431                if ((p_buffer[i] == 0xFF) &&
 432                    (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 433
 434                        *p_bytes_used = i + 4;
 435                        sav_eav = p_buffer[i + 3];
 436                        return sav_eav;
 437                }
 438        }
 439
 440        *p_bytes_used = buffer_size;
 441        return 0;
 442}
 443
 444u32 cx231xx_get_video_line(struct cx231xx *dev,
 445                           struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 446                           u8 *p_buffer, u32 buffer_size)
 447{
 448        u32 bytes_copied = 0;
 449        int current_field = -1;
 450
 451        switch (sav_eav) {
 452        case SAV_ACTIVE_VIDEO_FIELD1:
 453                /* looking for skipped line which occurred in PAL 720x480 mode.
 454                   In this case, there will be no active data contained
 455                   between the SAV and EAV */
 456                if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 457                    (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 458                    ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 459                     (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 460                     (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 461                     (p_buffer[3] == EAV_VBLANK_FIELD2)))
 462                        return bytes_copied;
 463                current_field = 1;
 464                break;
 465
 466        case SAV_ACTIVE_VIDEO_FIELD2:
 467                /* looking for skipped line which occurred in PAL 720x480 mode.
 468                   In this case, there will be no active data contained between
 469                   the SAV and EAV */
 470                if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 471                    (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 472                    ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 473                     (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 474                     (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 475                     (p_buffer[3] == EAV_VBLANK_FIELD2)))
 476                        return bytes_copied;
 477                current_field = 2;
 478                break;
 479        }
 480
 481        dma_q->last_sav = sav_eav;
 482
 483        bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 484                                               buffer_size, current_field);
 485
 486        return bytes_copied;
 487}
 488
 489u32 cx231xx_copy_video_line(struct cx231xx *dev,
 490                            struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 491                            u32 length, int field_number)
 492{
 493        u32 bytes_to_copy;
 494        struct cx231xx_buffer *buf;
 495        u32 _line_size = dev->width * 2;
 496
 497        if (dma_q->current_field != field_number)
 498                cx231xx_reset_video_buffer(dev, dma_q);
 499
 500        /* get the buffer pointer */
 501        if (dev->USE_ISO)
 502                buf = dev->video_mode.isoc_ctl.buf;
 503        else
 504                buf = dev->video_mode.bulk_ctl.buf;
 505
 506        /* Remember the field number for next time */
 507        dma_q->current_field = field_number;
 508
 509        bytes_to_copy = dma_q->bytes_left_in_line;
 510        if (bytes_to_copy > length)
 511                bytes_to_copy = length;
 512
 513        if (dma_q->lines_completed >= dma_q->lines_per_field) {
 514                dma_q->bytes_left_in_line -= bytes_to_copy;
 515                dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 516                                          0 : 1;
 517                return 0;
 518        }
 519
 520        dma_q->is_partial_line = 1;
 521
 522        /* If we don't have a buffer, just return the number of bytes we would
 523           have copied if we had a buffer. */
 524        if (!buf) {
 525                dma_q->bytes_left_in_line -= bytes_to_copy;
 526                dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 527                                         ? 0 : 1;
 528                return bytes_to_copy;
 529        }
 530
 531        /* copy the data to video buffer */
 532        cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 533
 534        dma_q->pos += bytes_to_copy;
 535        dma_q->bytes_left_in_line -= bytes_to_copy;
 536
 537        if (dma_q->bytes_left_in_line == 0) {
 538                dma_q->bytes_left_in_line = _line_size;
 539                dma_q->lines_completed++;
 540                dma_q->is_partial_line = 0;
 541
 542                if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 543                        buffer_filled(dev, dma_q, buf);
 544
 545                        dma_q->pos = 0;
 546                        buf = NULL;
 547                        dma_q->lines_completed = 0;
 548                }
 549        }
 550
 551        return bytes_to_copy;
 552}
 553
 554void cx231xx_reset_video_buffer(struct cx231xx *dev,
 555                                struct cx231xx_dmaqueue *dma_q)
 556{
 557        struct cx231xx_buffer *buf;
 558
 559        /* handle the switch from field 1 to field 2 */
 560        if (dma_q->current_field == 1) {
 561                if (dma_q->lines_completed >= dma_q->lines_per_field)
 562                        dma_q->field1_done = 1;
 563                else
 564                        dma_q->field1_done = 0;
 565        }
 566
 567        if (dev->USE_ISO)
 568                buf = dev->video_mode.isoc_ctl.buf;
 569        else
 570                buf = dev->video_mode.bulk_ctl.buf;
 571
 572        if (buf == NULL) {
 573                /* first try to get the buffer */
 574                get_next_buf(dma_q, &buf);
 575
 576                dma_q->pos = 0;
 577                dma_q->field1_done = 0;
 578                dma_q->current_field = -1;
 579        }
 580
 581        /* reset the counters */
 582        dma_q->bytes_left_in_line = dev->width << 1;
 583        dma_q->lines_completed = 0;
 584}
 585
 586int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 587                    u8 *p_buffer, u32 bytes_to_copy)
 588{
 589        u8 *p_out_buffer = NULL;
 590        u32 current_line_bytes_copied = 0;
 591        struct cx231xx_buffer *buf;
 592        u32 _line_size = dev->width << 1;
 593        void *startwrite;
 594        int offset, lencopy;
 595
 596        if (dev->USE_ISO)
 597                buf = dev->video_mode.isoc_ctl.buf;
 598        else
 599                buf = dev->video_mode.bulk_ctl.buf;
 600
 601        if (buf == NULL)
 602                return -1;
 603
 604        p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 605
 606        current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 607
 608        /* Offset field 2 one line from the top of the buffer */
 609        offset = (dma_q->current_field == 1) ? 0 : _line_size;
 610
 611        /* Offset for field 2 */
 612        startwrite = p_out_buffer + offset;
 613
 614        /* lines already completed in the current field */
 615        startwrite += (dma_q->lines_completed * _line_size * 2);
 616
 617        /* bytes already completed in the current line */
 618        startwrite += current_line_bytes_copied;
 619
 620        lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 621                  bytes_to_copy : dma_q->bytes_left_in_line;
 622
 623        if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 624                return 0;
 625
 626        /* The below copies the UYVY data straight into video buffer */
 627        cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 628
 629        return 0;
 630}
 631
 632void cx231xx_swab(u16 *from, u16 *to, u16 len)
 633{
 634        u16 i;
 635
 636        if (len <= 0)
 637                return;
 638
 639        for (i = 0; i < len / 2; i++)
 640                to[i] = (from[i] << 8) | (from[i] >> 8);
 641}
 642
 643u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 644{
 645        u8 buffer_complete = 0;
 646
 647        /* Dual field stream */
 648        buffer_complete = ((dma_q->current_field == 2) &&
 649                           (dma_q->lines_completed >= dma_q->lines_per_field) &&
 650                            dma_q->field1_done);
 651
 652        return buffer_complete;
 653}
 654
 655/* ------------------------------------------------------------------
 656        Videobuf operations
 657   ------------------------------------------------------------------*/
 658
 659static int
 660buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 661{
 662        struct cx231xx_fh *fh = vq->priv_data;
 663        struct cx231xx *dev = fh->dev;
 664
 665        *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 666        if (0 == *count)
 667                *count = CX231XX_DEF_BUF;
 668
 669        if (*count < CX231XX_MIN_BUF)
 670                *count = CX231XX_MIN_BUF;
 671
 672        return 0;
 673}
 674
 675/* This is called *without* dev->slock held; please keep it that way */
 676static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 677{
 678        struct cx231xx_fh *fh = vq->priv_data;
 679        struct cx231xx *dev = fh->dev;
 680        unsigned long flags = 0;
 681
 682        if (in_interrupt())
 683                BUG();
 684
 685        /* We used to wait for the buffer to finish here, but this didn't work
 686           because, as we were keeping the state as VIDEOBUF_QUEUED,
 687           videobuf_queue_cancel marked it as finished for us.
 688           (Also, it could wedge forever if the hardware was misconfigured.)
 689
 690           This should be safe; by the time we get here, the buffer isn't
 691           queued anymore. If we ever start marking the buffers as
 692           VIDEOBUF_ACTIVE, it won't be, though.
 693         */
 694        spin_lock_irqsave(&dev->video_mode.slock, flags);
 695        if (dev->USE_ISO) {
 696                if (dev->video_mode.isoc_ctl.buf == buf)
 697                        dev->video_mode.isoc_ctl.buf = NULL;
 698        } else {
 699                if (dev->video_mode.bulk_ctl.buf == buf)
 700                        dev->video_mode.bulk_ctl.buf = NULL;
 701        }
 702        spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 703
 704        videobuf_vmalloc_free(&buf->vb);
 705        buf->vb.state = VIDEOBUF_NEEDS_INIT;
 706}
 707
 708static int
 709buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 710               enum v4l2_field field)
 711{
 712        struct cx231xx_fh *fh = vq->priv_data;
 713        struct cx231xx_buffer *buf =
 714            container_of(vb, struct cx231xx_buffer, vb);
 715        struct cx231xx *dev = fh->dev;
 716        int rc = 0, urb_init = 0;
 717
 718        /* The only currently supported format is 16 bits/pixel */
 719        buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 720                        + 7) >> 3;
 721        if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 722                return -EINVAL;
 723
 724        buf->vb.width = dev->width;
 725        buf->vb.height = dev->height;
 726        buf->vb.field = field;
 727
 728        if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 729                rc = videobuf_iolock(vq, &buf->vb, NULL);
 730                if (rc < 0)
 731                        goto fail;
 732        }
 733
 734        if (dev->USE_ISO) {
 735                if (!dev->video_mode.isoc_ctl.num_bufs)
 736                        urb_init = 1;
 737        } else {
 738                if (!dev->video_mode.bulk_ctl.num_bufs)
 739                        urb_init = 1;
 740        }
 741        /*cx231xx_info("urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 742                urb_init, dev->video_mode.max_pkt_size);*/
 743        if (urb_init) {
 744                dev->mode_tv = 0;
 745                if (dev->USE_ISO)
 746                        rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 747                                       CX231XX_NUM_BUFS,
 748                                       dev->video_mode.max_pkt_size,
 749                                       cx231xx_isoc_copy);
 750                else
 751                        rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 752                                       CX231XX_NUM_BUFS,
 753                                       dev->video_mode.max_pkt_size,
 754                                       cx231xx_bulk_copy);
 755                if (rc < 0)
 756                        goto fail;
 757        }
 758
 759        buf->vb.state = VIDEOBUF_PREPARED;
 760        return 0;
 761
 762fail:
 763        free_buffer(vq, buf);
 764        return rc;
 765}
 766
 767static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 768{
 769        struct cx231xx_buffer *buf =
 770            container_of(vb, struct cx231xx_buffer, vb);
 771        struct cx231xx_fh *fh = vq->priv_data;
 772        struct cx231xx *dev = fh->dev;
 773        struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 774
 775        buf->vb.state = VIDEOBUF_QUEUED;
 776        list_add_tail(&buf->vb.queue, &vidq->active);
 777
 778}
 779
 780static void buffer_release(struct videobuf_queue *vq,
 781                           struct videobuf_buffer *vb)
 782{
 783        struct cx231xx_buffer *buf =
 784            container_of(vb, struct cx231xx_buffer, vb);
 785        struct cx231xx_fh *fh = vq->priv_data;
 786        struct cx231xx *dev = (struct cx231xx *)fh->dev;
 787
 788        cx231xx_isocdbg("cx231xx: called buffer_release\n");
 789
 790        free_buffer(vq, buf);
 791}
 792
 793static struct videobuf_queue_ops cx231xx_video_qops = {
 794        .buf_setup = buffer_setup,
 795        .buf_prepare = buffer_prepare,
 796        .buf_queue = buffer_queue,
 797        .buf_release = buffer_release,
 798};
 799
 800/*********************  v4l2 interface  **************************************/
 801
 802void video_mux(struct cx231xx *dev, int index)
 803{
 804        dev->video_input = index;
 805        dev->ctl_ainput = INPUT(index)->amux;
 806
 807        cx231xx_set_video_input_mux(dev, index);
 808
 809        cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 810
 811        cx231xx_set_audio_input(dev, dev->ctl_ainput);
 812
 813        cx231xx_info("video_mux : %d\n", index);
 814
 815        /* do mode control overrides if required */
 816        cx231xx_do_mode_ctrl_overrides(dev);
 817}
 818
 819/* Usage lock check functions */
 820static int res_get(struct cx231xx_fh *fh)
 821{
 822        struct cx231xx *dev = fh->dev;
 823        int rc = 0;
 824
 825        /* This instance already has stream_on */
 826        if (fh->stream_on)
 827                return rc;
 828
 829        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 830                if (dev->stream_on)
 831                        return -EBUSY;
 832                dev->stream_on = 1;
 833        } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 834                if (dev->vbi_stream_on)
 835                        return -EBUSY;
 836                dev->vbi_stream_on = 1;
 837        } else
 838                return -EINVAL;
 839
 840        fh->stream_on = 1;
 841
 842        return rc;
 843}
 844
 845static int res_check(struct cx231xx_fh *fh)
 846{
 847        return fh->stream_on;
 848}
 849
 850static void res_free(struct cx231xx_fh *fh)
 851{
 852        struct cx231xx *dev = fh->dev;
 853
 854        fh->stream_on = 0;
 855
 856        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 857                dev->stream_on = 0;
 858        if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 859                dev->vbi_stream_on = 0;
 860}
 861
 862static int check_dev(struct cx231xx *dev)
 863{
 864        if (dev->state & DEV_DISCONNECTED) {
 865                cx231xx_errdev("v4l2 ioctl: device not present\n");
 866                return -ENODEV;
 867        }
 868        return 0;
 869}
 870
 871/* ------------------------------------------------------------------
 872        IOCTL vidioc handling
 873   ------------------------------------------------------------------*/
 874
 875static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 876                                struct v4l2_format *f)
 877{
 878        struct cx231xx_fh *fh = priv;
 879        struct cx231xx *dev = fh->dev;
 880
 881        f->fmt.pix.width = dev->width;
 882        f->fmt.pix.height = dev->height;
 883        f->fmt.pix.pixelformat = dev->format->fourcc;
 884        f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 885        f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 886        f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 887
 888        f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 889        f->fmt.pix.priv = 0;
 890
 891        return 0;
 892}
 893
 894static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 895{
 896        unsigned int i;
 897
 898        for (i = 0; i < ARRAY_SIZE(format); i++)
 899                if (format[i].fourcc == fourcc)
 900                        return &format[i];
 901
 902        return NULL;
 903}
 904
 905static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 906                                  struct v4l2_format *f)
 907{
 908        struct cx231xx_fh *fh = priv;
 909        struct cx231xx *dev = fh->dev;
 910        unsigned int width = f->fmt.pix.width;
 911        unsigned int height = f->fmt.pix.height;
 912        unsigned int maxw = norm_maxw(dev);
 913        unsigned int maxh = norm_maxh(dev);
 914        struct cx231xx_fmt *fmt;
 915
 916        fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 917        if (!fmt) {
 918                cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 919                                 f->fmt.pix.pixelformat);
 920                return -EINVAL;
 921        }
 922
 923        /* width must even because of the YUYV format
 924           height must be even because of interlacing */
 925        v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 926
 927        f->fmt.pix.width = width;
 928        f->fmt.pix.height = height;
 929        f->fmt.pix.pixelformat = fmt->fourcc;
 930        f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
 931        f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 932        f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 933        f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 934        f->fmt.pix.priv = 0;
 935
 936        return 0;
 937}
 938
 939static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 940                                struct v4l2_format *f)
 941{
 942        struct cx231xx_fh *fh = priv;
 943        struct cx231xx *dev = fh->dev;
 944        int rc;
 945        struct cx231xx_fmt *fmt;
 946        struct v4l2_mbus_framefmt mbus_fmt;
 947
 948        rc = check_dev(dev);
 949        if (rc < 0)
 950                return rc;
 951
 952        vidioc_try_fmt_vid_cap(file, priv, f);
 953
 954        fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 955        if (!fmt)
 956                return -EINVAL;
 957
 958        if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 959                cx231xx_errdev("%s queue busy\n", __func__);
 960                return -EBUSY;
 961        }
 962
 963        if (dev->stream_on && !fh->stream_on) {
 964                cx231xx_errdev("%s device in use by another fh\n", __func__);
 965                return -EBUSY;
 966        }
 967
 968        /* set new image size */
 969        dev->width = f->fmt.pix.width;
 970        dev->height = f->fmt.pix.height;
 971        dev->format = fmt;
 972
 973        v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
 974        call_all(dev, video, s_mbus_fmt, &mbus_fmt);
 975        v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
 976
 977        return rc;
 978}
 979
 980static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 981{
 982        struct cx231xx_fh *fh = priv;
 983        struct cx231xx *dev = fh->dev;
 984
 985        *id = dev->norm;
 986        return 0;
 987}
 988
 989static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
 990{
 991        struct cx231xx_fh *fh = priv;
 992        struct cx231xx *dev = fh->dev;
 993        struct v4l2_mbus_framefmt mbus_fmt;
 994        int rc;
 995
 996        rc = check_dev(dev);
 997        if (rc < 0)
 998                return rc;
 999
1000        if (dev->norm == norm)
1001                return 0;
1002
1003        if (videobuf_queue_is_busy(&fh->vb_vidq))
1004                return -EBUSY;
1005
1006        dev->norm = norm;
1007
1008        /* Adjusts width/height, if needed */
1009        dev->width = 720;
1010        dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1011
1012        call_all(dev, video, s_std, dev->norm);
1013
1014        /* We need to reset basic properties in the decoder related to
1015           resolution (since a standard change effects things like the number
1016           of lines in VACT, etc) */
1017        memset(&mbus_fmt, 0, sizeof(mbus_fmt));
1018        mbus_fmt.code = V4L2_MBUS_FMT_FIXED;
1019        mbus_fmt.width = dev->width;
1020        mbus_fmt.height = dev->height;
1021        call_all(dev, video, s_mbus_fmt, &mbus_fmt);
1022
1023        /* do mode control overrides */
1024        cx231xx_do_mode_ctrl_overrides(dev);
1025
1026        return 0;
1027}
1028
1029static const char *iname[] = {
1030        [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1031        [CX231XX_VMUX_SVIDEO]     = "S-Video",
1032        [CX231XX_VMUX_TELEVISION] = "Television",
1033        [CX231XX_VMUX_CABLE]      = "Cable TV",
1034        [CX231XX_VMUX_DVB]        = "DVB",
1035        [CX231XX_VMUX_DEBUG]      = "for debug only",
1036};
1037
1038int cx231xx_enum_input(struct file *file, void *priv,
1039                             struct v4l2_input *i)
1040{
1041        struct cx231xx_fh *fh = priv;
1042        struct cx231xx *dev = fh->dev;
1043        u32 gen_stat;
1044        unsigned int ret, n;
1045
1046        n = i->index;
1047        if (n >= MAX_CX231XX_INPUT)
1048                return -EINVAL;
1049        if (0 == INPUT(n)->type)
1050                return -EINVAL;
1051
1052        i->index = n;
1053        i->type = V4L2_INPUT_TYPE_CAMERA;
1054
1055        strcpy(i->name, iname[INPUT(n)->type]);
1056
1057        if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1058            (CX231XX_VMUX_CABLE == INPUT(n)->type))
1059                i->type = V4L2_INPUT_TYPE_TUNER;
1060
1061        i->std = dev->vdev->tvnorms;
1062
1063        /* If they are asking about the active input, read signal status */
1064        if (n == dev->video_input) {
1065                ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1066                                            GEN_STAT, 2, &gen_stat, 4);
1067                if (ret > 0) {
1068                        if ((gen_stat & FLD_VPRES) == 0x00)
1069                                i->status |= V4L2_IN_ST_NO_SIGNAL;
1070                        if ((gen_stat & FLD_HLOCK) == 0x00)
1071                                i->status |= V4L2_IN_ST_NO_H_LOCK;
1072                }
1073        }
1074
1075        return 0;
1076}
1077
1078int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1079{
1080        struct cx231xx_fh *fh = priv;
1081        struct cx231xx *dev = fh->dev;
1082
1083        *i = dev->video_input;
1084
1085        return 0;
1086}
1087
1088int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1089{
1090        struct cx231xx_fh *fh = priv;
1091        struct cx231xx *dev = fh->dev;
1092        int rc;
1093
1094        dev->mode_tv = 0;
1095        rc = check_dev(dev);
1096        if (rc < 0)
1097                return rc;
1098
1099        if (i >= MAX_CX231XX_INPUT)
1100                return -EINVAL;
1101        if (0 == INPUT(i)->type)
1102                return -EINVAL;
1103
1104        video_mux(dev, i);
1105
1106        if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1107            INPUT(i)->type == CX231XX_VMUX_CABLE) {
1108                /* There's a tuner, so reset the standard and put it on the
1109                   last known frequency (since it was probably powered down
1110                   until now */
1111                call_all(dev, video, s_std, dev->norm);
1112        }
1113
1114        return 0;
1115}
1116
1117int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1118{
1119        struct cx231xx_fh *fh = priv;
1120        struct cx231xx *dev = fh->dev;
1121        int rc;
1122
1123        rc = check_dev(dev);
1124        if (rc < 0)
1125                return rc;
1126
1127        if (0 != t->index)
1128                return -EINVAL;
1129
1130        strcpy(t->name, "Tuner");
1131
1132        t->type = V4L2_TUNER_ANALOG_TV;
1133        t->capability = V4L2_TUNER_CAP_NORM;
1134        t->rangehigh = 0xffffffffUL;
1135        t->signal = 0xffff;     /* LOCKED */
1136        call_all(dev, tuner, g_tuner, t);
1137
1138        return 0;
1139}
1140
1141int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1142{
1143        struct cx231xx_fh *fh = priv;
1144        struct cx231xx *dev = fh->dev;
1145        int rc;
1146
1147        rc = check_dev(dev);
1148        if (rc < 0)
1149                return rc;
1150
1151        if (0 != t->index)
1152                return -EINVAL;
1153#if 0
1154        call_all(dev, tuner, s_tuner, t);
1155#endif
1156        return 0;
1157}
1158
1159int cx231xx_g_frequency(struct file *file, void *priv,
1160                              struct v4l2_frequency *f)
1161{
1162        struct cx231xx_fh *fh = priv;
1163        struct cx231xx *dev = fh->dev;
1164
1165        if (f->tuner)
1166                return -EINVAL;
1167
1168        f->frequency = dev->ctl_freq;
1169
1170        return 0;
1171}
1172
1173int cx231xx_s_frequency(struct file *file, void *priv,
1174                              const struct v4l2_frequency *f)
1175{
1176        struct cx231xx_fh *fh = priv;
1177        struct cx231xx *dev = fh->dev;
1178        struct v4l2_frequency new_freq = *f;
1179        int rc;
1180        u32 if_frequency = 5400000;
1181
1182        cx231xx_info("Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1183                 f->frequency, f->type);
1184        /*cx231xx_info("f->type:  1-radio 2-analogTV 3-digitalTV\n");*/
1185
1186        rc = check_dev(dev);
1187        if (rc < 0)
1188                return rc;
1189
1190        if (0 != f->tuner)
1191                return -EINVAL;
1192
1193        /* set pre channel change settings in DIF first */
1194        rc = cx231xx_tuner_pre_channel_change(dev);
1195
1196        call_all(dev, tuner, s_frequency, f);
1197        call_all(dev, tuner, g_frequency, &new_freq);
1198        dev->ctl_freq = new_freq.frequency;
1199
1200        /* set post channel change settings in DIF first */
1201        rc = cx231xx_tuner_post_channel_change(dev);
1202
1203        if (dev->tuner_type == TUNER_NXP_TDA18271) {
1204                if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1205                        if_frequency = 5400000;  /*5.4MHz       */
1206                else if (dev->norm & V4L2_STD_B)
1207                        if_frequency = 6000000;  /*6.0MHz       */
1208                else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1209                        if_frequency = 6900000;  /*6.9MHz       */
1210                else if (dev->norm & V4L2_STD_GH)
1211                        if_frequency = 7100000;  /*7.1MHz       */
1212                else if (dev->norm & V4L2_STD_PAL_I)
1213                        if_frequency = 7250000;  /*7.25MHz      */
1214                else if (dev->norm & V4L2_STD_SECAM_L)
1215                        if_frequency = 6900000;  /*6.9MHz       */
1216                else if (dev->norm & V4L2_STD_SECAM_LC)
1217                        if_frequency = 1250000;  /*1.25MHz      */
1218
1219                cx231xx_info("if_frequency is set to %d\n", if_frequency);
1220                cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1221
1222                update_HH_register_after_set_DIF(dev);
1223        }
1224
1225        cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1226
1227        return rc;
1228}
1229
1230#ifdef CONFIG_VIDEO_ADV_DEBUG
1231
1232int cx231xx_g_chip_info(struct file *file, void *fh,
1233                        struct v4l2_dbg_chip_info *chip)
1234{
1235        switch (chip->match.addr) {
1236        case 0: /* Cx231xx - internal registers */
1237                return 0;
1238        case 1: /* AFE - read byte */
1239                strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1240                return 0;
1241        case 2: /* Video Block - read byte */
1242                strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1243                return 0;
1244        case 3: /* I2S block - read byte */
1245                strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1246                return 0;
1247        case 4: /* AFE - read dword */
1248                strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1249                return 0;
1250        case 5: /* Video Block - read dword */
1251                strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1252                return 0;
1253        case 6: /* I2S Block - read dword */
1254                strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1255                return 0;
1256        }
1257        return -EINVAL;
1258}
1259
1260int cx231xx_g_register(struct file *file, void *priv,
1261                             struct v4l2_dbg_register *reg)
1262{
1263        struct cx231xx_fh *fh = priv;
1264        struct cx231xx *dev = fh->dev;
1265        int ret;
1266        u8 value[4] = { 0, 0, 0, 0 };
1267        u32 data = 0;
1268
1269        switch (reg->match.addr) {
1270        case 0: /* Cx231xx - internal registers */
1271                ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1272                                (u16)reg->reg, value, 4);
1273                reg->val = value[0] | value[1] << 8 |
1274                        value[2] << 16 | value[3] << 24;
1275                reg->size = 4;
1276                break;
1277        case 1: /* AFE - read byte */
1278                ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1279                                (u16)reg->reg, 2, &data, 1);
1280                reg->val = data;
1281                reg->size = 1;
1282                break;
1283        case 2: /* Video Block - read byte */
1284                ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1285                                (u16)reg->reg, 2, &data, 1);
1286                reg->val = data;
1287                reg->size = 1;
1288                break;
1289        case 3: /* I2S block - read byte */
1290                ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1291                                (u16)reg->reg, 1, &data, 1);
1292                reg->val = data;
1293                reg->size = 1;
1294                break;
1295        case 4: /* AFE - read dword */
1296                ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1297                                (u16)reg->reg, 2, &data, 4);
1298                reg->val = data;
1299                reg->size = 4;
1300                break;
1301        case 5: /* Video Block - read dword */
1302                ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1303                                (u16)reg->reg, 2, &data, 4);
1304                reg->val = data;
1305                reg->size = 4;
1306                break;
1307        case 6: /* I2S Block - read dword */
1308                ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1309                                (u16)reg->reg, 1, &data, 4);
1310                reg->val = data;
1311                reg->size = 4;
1312                break;
1313        default:
1314                return -EINVAL;
1315        }
1316        return ret < 0 ? ret : 0;
1317}
1318
1319int cx231xx_s_register(struct file *file, void *priv,
1320                             const struct v4l2_dbg_register *reg)
1321{
1322        struct cx231xx_fh *fh = priv;
1323        struct cx231xx *dev = fh->dev;
1324        int ret;
1325        u8 data[4] = { 0, 0, 0, 0 };
1326
1327        switch (reg->match.addr) {
1328        case 0: /* cx231xx internal registers */
1329                data[0] = (u8) reg->val;
1330                data[1] = (u8) (reg->val >> 8);
1331                data[2] = (u8) (reg->val >> 16);
1332                data[3] = (u8) (reg->val >> 24);
1333                ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1334                                (u16)reg->reg, data, 4);
1335                break;
1336        case 1: /* AFE - write byte */
1337                ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1338                                (u16)reg->reg, 2, reg->val, 1);
1339                break;
1340        case 2: /* Video Block - write byte */
1341                ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1342                                (u16)reg->reg, 2, reg->val, 1);
1343                break;
1344        case 3: /* I2S block - write byte */
1345                ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1346                                (u16)reg->reg, 1, reg->val, 1);
1347                break;
1348        case 4: /* AFE - write dword */
1349                ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1350                                (u16)reg->reg, 2, reg->val, 4);
1351                break;
1352        case 5: /* Video Block - write dword */
1353                ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1354                                (u16)reg->reg, 2, reg->val, 4);
1355                break;
1356        case 6: /* I2S block - write dword */
1357                ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1358                                (u16)reg->reg, 1, reg->val, 4);
1359                break;
1360        default:
1361                return -EINVAL;
1362        }
1363        return ret < 0 ? ret : 0;
1364}
1365#endif
1366
1367static int vidioc_cropcap(struct file *file, void *priv,
1368                          struct v4l2_cropcap *cc)
1369{
1370        struct cx231xx_fh *fh = priv;
1371        struct cx231xx *dev = fh->dev;
1372
1373        if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1374                return -EINVAL;
1375
1376        cc->bounds.left = 0;
1377        cc->bounds.top = 0;
1378        cc->bounds.width = dev->width;
1379        cc->bounds.height = dev->height;
1380        cc->defrect = cc->bounds;
1381        cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1382        cc->pixelaspect.denominator = 59;
1383
1384        return 0;
1385}
1386
1387static int vidioc_streamon(struct file *file, void *priv,
1388                           enum v4l2_buf_type type)
1389{
1390        struct cx231xx_fh *fh = priv;
1391        struct cx231xx *dev = fh->dev;
1392        int rc;
1393
1394        rc = check_dev(dev);
1395        if (rc < 0)
1396                return rc;
1397
1398        rc = res_get(fh);
1399
1400        if (likely(rc >= 0))
1401                rc = videobuf_streamon(&fh->vb_vidq);
1402
1403        call_all(dev, video, s_stream, 1);
1404
1405        return rc;
1406}
1407
1408static int vidioc_streamoff(struct file *file, void *priv,
1409                            enum v4l2_buf_type type)
1410{
1411        struct cx231xx_fh *fh = priv;
1412        struct cx231xx *dev = fh->dev;
1413        int rc;
1414
1415        rc = check_dev(dev);
1416        if (rc < 0)
1417                return rc;
1418
1419        if (type != fh->type)
1420                return -EINVAL;
1421
1422        cx25840_call(dev, video, s_stream, 0);
1423
1424        videobuf_streamoff(&fh->vb_vidq);
1425        res_free(fh);
1426
1427        return 0;
1428}
1429
1430int cx231xx_querycap(struct file *file, void *priv,
1431                           struct v4l2_capability *cap)
1432{
1433        struct video_device *vdev = video_devdata(file);
1434        struct cx231xx_fh *fh = priv;
1435        struct cx231xx *dev = fh->dev;
1436
1437        strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1438        strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1439        usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1440
1441        if (vdev->vfl_type == VFL_TYPE_RADIO)
1442                cap->device_caps = V4L2_CAP_RADIO;
1443        else {
1444                cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1445                if (vdev->vfl_type == VFL_TYPE_VBI)
1446                        cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1447                else
1448                        cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1449        }
1450        if (dev->tuner_type != TUNER_ABSENT)
1451                cap->device_caps |= V4L2_CAP_TUNER;
1452        cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1453                V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1454                V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1455        if (dev->radio_dev)
1456                cap->capabilities |= V4L2_CAP_RADIO;
1457
1458        return 0;
1459}
1460
1461static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1462                                   struct v4l2_fmtdesc *f)
1463{
1464        if (unlikely(f->index >= ARRAY_SIZE(format)))
1465                return -EINVAL;
1466
1467        strlcpy(f->description, format[f->index].name, sizeof(f->description));
1468        f->pixelformat = format[f->index].fourcc;
1469
1470        return 0;
1471}
1472
1473/* RAW VBI ioctls */
1474
1475static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1476                                struct v4l2_format *f)
1477{
1478        struct cx231xx_fh *fh = priv;
1479        struct cx231xx *dev = fh->dev;
1480
1481        f->fmt.vbi.sampling_rate = 6750000 * 4;
1482        f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1483        f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1484        f->fmt.vbi.offset = 0;
1485        f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1486            PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1487        f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1488            PAL_VBI_LINES : NTSC_VBI_LINES;
1489        f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1490            PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1491        f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1492        memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1493
1494        return 0;
1495
1496}
1497
1498static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1499                                  struct v4l2_format *f)
1500{
1501        struct cx231xx_fh *fh = priv;
1502        struct cx231xx *dev = fh->dev;
1503
1504        f->fmt.vbi.sampling_rate = 6750000 * 4;
1505        f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1506        f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1507        f->fmt.vbi.offset = 0;
1508        f->fmt.vbi.flags = 0;
1509        f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1510            PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1511        f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1512            PAL_VBI_LINES : NTSC_VBI_LINES;
1513        f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1514            PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1515        f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1516        memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1517
1518        return 0;
1519
1520}
1521
1522static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1523                                  struct v4l2_format *f)
1524{
1525        struct cx231xx_fh *fh = priv;
1526        struct cx231xx *dev = fh->dev;
1527
1528        if (dev->vbi_stream_on && !fh->stream_on) {
1529                cx231xx_errdev("%s device in use by another fh\n", __func__);
1530                return -EBUSY;
1531        }
1532        return vidioc_try_fmt_vbi_cap(file, priv, f);
1533}
1534
1535static int vidioc_reqbufs(struct file *file, void *priv,
1536                          struct v4l2_requestbuffers *rb)
1537{
1538        struct cx231xx_fh *fh = priv;
1539        struct cx231xx *dev = fh->dev;
1540        int rc;
1541
1542        rc = check_dev(dev);
1543        if (rc < 0)
1544                return rc;
1545
1546        return videobuf_reqbufs(&fh->vb_vidq, rb);
1547}
1548
1549static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1550{
1551        struct cx231xx_fh *fh = priv;
1552        struct cx231xx *dev = fh->dev;
1553        int rc;
1554
1555        rc = check_dev(dev);
1556        if (rc < 0)
1557                return rc;
1558
1559        return videobuf_querybuf(&fh->vb_vidq, b);
1560}
1561
1562static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1563{
1564        struct cx231xx_fh *fh = priv;
1565        struct cx231xx *dev = fh->dev;
1566        int rc;
1567
1568        rc = check_dev(dev);
1569        if (rc < 0)
1570                return rc;
1571
1572        return videobuf_qbuf(&fh->vb_vidq, b);
1573}
1574
1575static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1576{
1577        struct cx231xx_fh *fh = priv;
1578        struct cx231xx *dev = fh->dev;
1579        int rc;
1580
1581        rc = check_dev(dev);
1582        if (rc < 0)
1583                return rc;
1584
1585        return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1586}
1587
1588/* ----------------------------------------------------------- */
1589/* RADIO ESPECIFIC IOCTLS                                      */
1590/* ----------------------------------------------------------- */
1591
1592static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1593{
1594        struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1595
1596        if (t->index)
1597                return -EINVAL;
1598
1599        strcpy(t->name, "Radio");
1600
1601        call_all(dev, tuner, g_tuner, t);
1602
1603        return 0;
1604}
1605static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1606{
1607        struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1608
1609        if (t->index)
1610                return -EINVAL;
1611
1612        call_all(dev, tuner, s_tuner, t);
1613
1614        return 0;
1615}
1616
1617/*
1618 * cx231xx_v4l2_open()
1619 * inits the device and starts isoc transfer
1620 */
1621static int cx231xx_v4l2_open(struct file *filp)
1622{
1623        int errCode = 0, radio = 0;
1624        struct video_device *vdev = video_devdata(filp);
1625        struct cx231xx *dev = video_drvdata(filp);
1626        struct cx231xx_fh *fh;
1627        enum v4l2_buf_type fh_type = 0;
1628
1629        switch (vdev->vfl_type) {
1630        case VFL_TYPE_GRABBER:
1631                fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1632                break;
1633        case VFL_TYPE_VBI:
1634                fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1635                break;
1636        case VFL_TYPE_RADIO:
1637                radio = 1;
1638                break;
1639        }
1640
1641        cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1642                         video_device_node_name(vdev), v4l2_type_names[fh_type],
1643                         dev->users);
1644
1645#if 0
1646        errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1647        if (errCode < 0) {
1648                cx231xx_errdev
1649                    ("Device locked on digital mode. Can't open analog\n");
1650                return -EBUSY;
1651        }
1652#endif
1653
1654        fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1655        if (!fh) {
1656                cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1657                return -ENOMEM;
1658        }
1659        if (mutex_lock_interruptible(&dev->lock)) {
1660                kfree(fh);
1661                return -ERESTARTSYS;
1662        }
1663        fh->dev = dev;
1664        fh->type = fh_type;
1665        filp->private_data = fh;
1666        v4l2_fh_init(&fh->fh, vdev);
1667
1668        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1669                /* Power up in Analog TV mode */
1670                if (dev->board.external_av)
1671                        cx231xx_set_power_mode(dev,
1672                                 POLARIS_AVMODE_ENXTERNAL_AV);
1673                else
1674                        cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1675
1676#if 0
1677                cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1678#endif
1679
1680                /* set video alternate setting */
1681                cx231xx_set_video_alternate(dev);
1682
1683                /* Needed, since GPIO might have disabled power of
1684                   some i2c device */
1685                cx231xx_config_i2c(dev);
1686
1687                /* device needs to be initialized before isoc transfer */
1688                dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1689
1690        }
1691        if (radio) {
1692                cx231xx_videodbg("video_open: setting radio device\n");
1693
1694                /* cx231xx_start_radio(dev); */
1695
1696                call_all(dev, tuner, s_radio);
1697        }
1698
1699        dev->users++;
1700
1701        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1702                videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1703                                            NULL, &dev->video_mode.slock,
1704                                            fh->type, V4L2_FIELD_INTERLACED,
1705                                            sizeof(struct cx231xx_buffer),
1706                                            fh, &dev->lock);
1707        if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1708                /* Set the required alternate setting  VBI interface works in
1709                   Bulk mode only */
1710                cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1711
1712                videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1713                                            NULL, &dev->vbi_mode.slock,
1714                                            fh->type, V4L2_FIELD_SEQ_TB,
1715                                            sizeof(struct cx231xx_buffer),
1716                                            fh, &dev->lock);
1717        }
1718        mutex_unlock(&dev->lock);
1719        v4l2_fh_add(&fh->fh);
1720
1721        return errCode;
1722}
1723
1724/*
1725 * cx231xx_realease_resources()
1726 * unregisters the v4l2,i2c and usb devices
1727 * called when the device gets disconected or at module unload
1728*/
1729void cx231xx_release_analog_resources(struct cx231xx *dev)
1730{
1731
1732        /*FIXME: I2C IR should be disconnected */
1733
1734        if (dev->radio_dev) {
1735                if (video_is_registered(dev->radio_dev))
1736                        video_unregister_device(dev->radio_dev);
1737                else
1738                        video_device_release(dev->radio_dev);
1739                dev->radio_dev = NULL;
1740        }
1741        if (dev->vbi_dev) {
1742                cx231xx_info("V4L2 device %s deregistered\n",
1743                             video_device_node_name(dev->vbi_dev));
1744                if (video_is_registered(dev->vbi_dev))
1745                        video_unregister_device(dev->vbi_dev);
1746                else
1747                        video_device_release(dev->vbi_dev);
1748                dev->vbi_dev = NULL;
1749        }
1750        if (dev->vdev) {
1751                cx231xx_info("V4L2 device %s deregistered\n",
1752                             video_device_node_name(dev->vdev));
1753
1754                if (dev->board.has_417)
1755                        cx231xx_417_unregister(dev);
1756
1757                if (video_is_registered(dev->vdev))
1758                        video_unregister_device(dev->vdev);
1759                else
1760                        video_device_release(dev->vdev);
1761                dev->vdev = NULL;
1762        }
1763        v4l2_ctrl_handler_free(&dev->ctrl_handler);
1764        v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1765}
1766
1767/*
1768 * cx231xx_close()
1769 * stops streaming and deallocates all resources allocated by the v4l2
1770 * calls and ioctls
1771 */
1772static int cx231xx_close(struct file *filp)
1773{
1774        struct cx231xx_fh *fh = filp->private_data;
1775        struct cx231xx *dev = fh->dev;
1776
1777        cx231xx_videodbg("users=%d\n", dev->users);
1778
1779        cx231xx_videodbg("users=%d\n", dev->users);
1780        if (res_check(fh))
1781                res_free(fh);
1782
1783        /*
1784         * To workaround error number=-71 on EP0 for VideoGrabber,
1785         *       need exclude following.
1786         * FIXME: It is probably safe to remove most of these, as we're
1787         * now avoiding the alternate setting for INDEX_VANC
1788         */
1789        if (!dev->board.no_alt_vanc)
1790                if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1791                        videobuf_stop(&fh->vb_vidq);
1792                        videobuf_mmap_free(&fh->vb_vidq);
1793
1794                        /* the device is already disconnect,
1795                           free the remaining resources */
1796                        if (dev->state & DEV_DISCONNECTED) {
1797                                if (atomic_read(&dev->devlist_count) > 0) {
1798                                        cx231xx_release_resources(dev);
1799                                        fh->dev = NULL;
1800                                        return 0;
1801                                }
1802                                return 0;
1803                        }
1804
1805                        /* do this before setting alternate! */
1806                        cx231xx_uninit_vbi_isoc(dev);
1807
1808                        /* set alternate 0 */
1809                        if (!dev->vbi_or_sliced_cc_mode)
1810                                cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1811                        else
1812                                cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1813
1814                        v4l2_fh_del(&fh->fh);
1815                        v4l2_fh_exit(&fh->fh);
1816                        kfree(fh);
1817                        dev->users--;
1818                        wake_up_interruptible_nr(&dev->open, 1);
1819                        return 0;
1820                }
1821
1822        v4l2_fh_del(&fh->fh);
1823        dev->users--;
1824        if (!dev->users) {
1825                videobuf_stop(&fh->vb_vidq);
1826                videobuf_mmap_free(&fh->vb_vidq);
1827
1828                /* the device is already disconnect,
1829                   free the remaining resources */
1830                if (dev->state & DEV_DISCONNECTED) {
1831                        cx231xx_release_resources(dev);
1832                        fh->dev = NULL;
1833                        return 0;
1834                }
1835
1836                /* Save some power by putting tuner to sleep */
1837                call_all(dev, core, s_power, 0);
1838
1839                /* do this before setting alternate! */
1840                if (dev->USE_ISO)
1841                        cx231xx_uninit_isoc(dev);
1842                else
1843                        cx231xx_uninit_bulk(dev);
1844                cx231xx_set_mode(dev, CX231XX_SUSPEND);
1845
1846                /* set alternate 0 */
1847                cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1848        }
1849        v4l2_fh_exit(&fh->fh);
1850        kfree(fh);
1851        wake_up_interruptible_nr(&dev->open, 1);
1852        return 0;
1853}
1854
1855static int cx231xx_v4l2_close(struct file *filp)
1856{
1857        struct cx231xx_fh *fh = filp->private_data;
1858        struct cx231xx *dev = fh->dev;
1859        int rc;
1860
1861        mutex_lock(&dev->lock);
1862        rc = cx231xx_close(filp);
1863        mutex_unlock(&dev->lock);
1864        return rc;
1865}
1866
1867/*
1868 * cx231xx_v4l2_read()
1869 * will allocate buffers when called for the first time
1870 */
1871static ssize_t
1872cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1873                  loff_t *pos)
1874{
1875        struct cx231xx_fh *fh = filp->private_data;
1876        struct cx231xx *dev = fh->dev;
1877        int rc;
1878
1879        rc = check_dev(dev);
1880        if (rc < 0)
1881                return rc;
1882
1883        if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1884            (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1885                rc = res_get(fh);
1886
1887                if (unlikely(rc < 0))
1888                        return rc;
1889
1890                if (mutex_lock_interruptible(&dev->lock))
1891                        return -ERESTARTSYS;
1892                rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1893                                            filp->f_flags & O_NONBLOCK);
1894                mutex_unlock(&dev->lock);
1895                return rc;
1896        }
1897        return 0;
1898}
1899
1900/*
1901 * cx231xx_v4l2_poll()
1902 * will allocate buffers when called for the first time
1903 */
1904static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
1905{
1906        unsigned long req_events = poll_requested_events(wait);
1907        struct cx231xx_fh *fh = filp->private_data;
1908        struct cx231xx *dev = fh->dev;
1909        unsigned res = 0;
1910        int rc;
1911
1912        rc = check_dev(dev);
1913        if (rc < 0)
1914                return POLLERR;
1915
1916        rc = res_get(fh);
1917
1918        if (unlikely(rc < 0))
1919                return POLLERR;
1920
1921        if (v4l2_event_pending(&fh->fh))
1922                res |= POLLPRI;
1923        else
1924                poll_wait(filp, &fh->fh.wait, wait);
1925
1926        if (!(req_events & (POLLIN | POLLRDNORM)))
1927                return res;
1928
1929        if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
1930            (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
1931                mutex_lock(&dev->lock);
1932                res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1933                mutex_unlock(&dev->lock);
1934                return res;
1935        }
1936        return res | POLLERR;
1937}
1938
1939/*
1940 * cx231xx_v4l2_mmap()
1941 */
1942static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1943{
1944        struct cx231xx_fh *fh = filp->private_data;
1945        struct cx231xx *dev = fh->dev;
1946        int rc;
1947
1948        rc = check_dev(dev);
1949        if (rc < 0)
1950                return rc;
1951
1952        rc = res_get(fh);
1953
1954        if (unlikely(rc < 0))
1955                return rc;
1956
1957        if (mutex_lock_interruptible(&dev->lock))
1958                return -ERESTARTSYS;
1959        rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1960        mutex_unlock(&dev->lock);
1961
1962        cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1963                         (unsigned long)vma->vm_start,
1964                         (unsigned long)vma->vm_end -
1965                         (unsigned long)vma->vm_start, rc);
1966
1967        return rc;
1968}
1969
1970static const struct v4l2_file_operations cx231xx_v4l_fops = {
1971        .owner   = THIS_MODULE,
1972        .open    = cx231xx_v4l2_open,
1973        .release = cx231xx_v4l2_close,
1974        .read    = cx231xx_v4l2_read,
1975        .poll    = cx231xx_v4l2_poll,
1976        .mmap    = cx231xx_v4l2_mmap,
1977        .unlocked_ioctl   = video_ioctl2,
1978};
1979
1980static const struct v4l2_ioctl_ops video_ioctl_ops = {
1981        .vidioc_querycap               = cx231xx_querycap,
1982        .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
1983        .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
1984        .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
1985        .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
1986        .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
1987        .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
1988        .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
1989        .vidioc_cropcap                = vidioc_cropcap,
1990        .vidioc_reqbufs                = vidioc_reqbufs,
1991        .vidioc_querybuf               = vidioc_querybuf,
1992        .vidioc_qbuf                   = vidioc_qbuf,
1993        .vidioc_dqbuf                  = vidioc_dqbuf,
1994        .vidioc_s_std                  = vidioc_s_std,
1995        .vidioc_g_std                  = vidioc_g_std,
1996        .vidioc_enum_input             = cx231xx_enum_input,
1997        .vidioc_g_input                = cx231xx_g_input,
1998        .vidioc_s_input                = cx231xx_s_input,
1999        .vidioc_streamon               = vidioc_streamon,
2000        .vidioc_streamoff              = vidioc_streamoff,
2001        .vidioc_g_tuner                = cx231xx_g_tuner,
2002        .vidioc_s_tuner                = cx231xx_s_tuner,
2003        .vidioc_g_frequency            = cx231xx_g_frequency,
2004        .vidioc_s_frequency            = cx231xx_s_frequency,
2005#ifdef CONFIG_VIDEO_ADV_DEBUG
2006        .vidioc_g_chip_info            = cx231xx_g_chip_info,
2007        .vidioc_g_register             = cx231xx_g_register,
2008        .vidioc_s_register             = cx231xx_s_register,
2009#endif
2010        .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2011        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2012};
2013
2014static struct video_device cx231xx_vbi_template;
2015
2016static const struct video_device cx231xx_video_template = {
2017        .fops         = &cx231xx_v4l_fops,
2018        .release      = video_device_release,
2019        .ioctl_ops    = &video_ioctl_ops,
2020        .tvnorms      = V4L2_STD_ALL,
2021};
2022
2023static const struct v4l2_file_operations radio_fops = {
2024        .owner   = THIS_MODULE,
2025        .open   = cx231xx_v4l2_open,
2026        .release = cx231xx_v4l2_close,
2027        .poll = v4l2_ctrl_poll,
2028        .unlocked_ioctl = video_ioctl2,
2029};
2030
2031static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2032        .vidioc_querycap    = cx231xx_querycap,
2033        .vidioc_g_tuner     = radio_g_tuner,
2034        .vidioc_s_tuner     = radio_s_tuner,
2035        .vidioc_g_frequency = cx231xx_g_frequency,
2036        .vidioc_s_frequency = cx231xx_s_frequency,
2037#ifdef CONFIG_VIDEO_ADV_DEBUG
2038        .vidioc_g_chip_info = cx231xx_g_chip_info,
2039        .vidioc_g_register  = cx231xx_g_register,
2040        .vidioc_s_register  = cx231xx_s_register,
2041#endif
2042        .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2043        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2044};
2045
2046static struct video_device cx231xx_radio_template = {
2047        .name      = "cx231xx-radio",
2048        .fops      = &radio_fops,
2049        .ioctl_ops = &radio_ioctl_ops,
2050};
2051
2052/******************************** usb interface ******************************/
2053
2054static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2055                const struct video_device
2056                *template, const char *type_name)
2057{
2058        struct video_device *vfd;
2059
2060        vfd = video_device_alloc();
2061        if (NULL == vfd)
2062                return NULL;
2063
2064        *vfd = *template;
2065        vfd->v4l2_dev = &dev->v4l2_dev;
2066        vfd->release = video_device_release;
2067        vfd->debug = video_debug;
2068        vfd->lock = &dev->lock;
2069        set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
2070
2071        snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2072
2073        video_set_drvdata(vfd, dev);
2074        if (dev->tuner_type == TUNER_ABSENT) {
2075                v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2076                v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2077                v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2078                v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2079        }
2080        return vfd;
2081}
2082
2083int cx231xx_register_analog_devices(struct cx231xx *dev)
2084{
2085        int ret;
2086
2087        cx231xx_info("%s: v4l2 driver version %s\n",
2088                     dev->name, CX231XX_VERSION);
2089
2090        /* set default norm */
2091        dev->norm = V4L2_STD_PAL;
2092        dev->width = norm_maxw(dev);
2093        dev->height = norm_maxh(dev);
2094        dev->interlaced = 0;
2095
2096        /* Analog specific initialization */
2097        dev->format = &format[0];
2098
2099        /* Set the initial input */
2100        video_mux(dev, dev->video_input);
2101
2102        call_all(dev, video, s_std, dev->norm);
2103
2104        v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2105        v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2106
2107        if (dev->sd_cx25840) {
2108                v4l2_ctrl_add_handler(&dev->ctrl_handler,
2109                                dev->sd_cx25840->ctrl_handler, NULL);
2110                v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2111                                dev->sd_cx25840->ctrl_handler,
2112                                v4l2_ctrl_radio_filter);
2113        }
2114
2115        if (dev->ctrl_handler.error)
2116                return dev->ctrl_handler.error;
2117        if (dev->radio_ctrl_handler.error)
2118                return dev->radio_ctrl_handler.error;
2119
2120        /* enable vbi capturing */
2121        /* write code here...  */
2122
2123        /* allocate and fill video video_device struct */
2124        dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2125        if (!dev->vdev) {
2126                cx231xx_errdev("cannot allocate video_device.\n");
2127                return -ENODEV;
2128        }
2129
2130        dev->vdev->ctrl_handler = &dev->ctrl_handler;
2131        /* register v4l2 video video_device */
2132        ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2133                                    video_nr[dev->devno]);
2134        if (ret) {
2135                cx231xx_errdev("unable to register video device (error=%i).\n",
2136                               ret);
2137                return ret;
2138        }
2139
2140        cx231xx_info("%s/0: registered device %s [v4l2]\n",
2141                     dev->name, video_device_node_name(dev->vdev));
2142
2143        /* Initialize VBI template */
2144        cx231xx_vbi_template = cx231xx_video_template;
2145        strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2146
2147        /* Allocate and fill vbi video_device struct */
2148        dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2149
2150        if (!dev->vbi_dev) {
2151                cx231xx_errdev("cannot allocate video_device.\n");
2152                return -ENODEV;
2153        }
2154        dev->vbi_dev->ctrl_handler = &dev->ctrl_handler;
2155        /* register v4l2 vbi video_device */
2156        ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2157                                    vbi_nr[dev->devno]);
2158        if (ret < 0) {
2159                cx231xx_errdev("unable to register vbi device\n");
2160                return ret;
2161        }
2162
2163        cx231xx_info("%s/0: registered device %s\n",
2164                     dev->name, video_device_node_name(dev->vbi_dev));
2165
2166        if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2167                dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2168                                                   "radio");
2169                if (!dev->radio_dev) {
2170                        cx231xx_errdev("cannot allocate video_device.\n");
2171                        return -ENODEV;
2172                }
2173                dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
2174                ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2175                                            radio_nr[dev->devno]);
2176                if (ret < 0) {
2177                        cx231xx_errdev("can't register radio device\n");
2178                        return ret;
2179                }
2180                cx231xx_info("Registered radio device as %s\n",
2181                             video_device_node_name(dev->radio_dev));
2182        }
2183
2184        cx231xx_info("V4L2 device registered as %s and %s\n",
2185                     video_device_node_name(dev->vdev),
2186                     video_device_node_name(dev->vbi_dev));
2187
2188        return 0;
2189}
2190