linux/drivers/media/video/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/version.h>
  33#include <linux/mm.h>
  34#include <linux/mutex.h>
  35#include <linux/slab.h>
  36
  37#include <media/v4l2-common.h>
  38#include <media/v4l2-ioctl.h>
  39#include <media/v4l2-chip-ident.h>
  40#include <media/msp3400.h>
  41#include <media/tuner.h>
  42
  43#include "dvb_frontend.h"
  44
  45#include "cx231xx.h"
  46#include "cx231xx-vbi.h"
  47
  48#define CX231XX_VERSION_CODE            KERNEL_VERSION(0, 0, 1)
  49
  50#define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  51#define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  52
  53#define cx231xx_videodbg(fmt, arg...) do {\
  54        if (video_debug) \
  55                printk(KERN_INFO "%s %s :"fmt, \
  56                         dev->name, __func__ , ##arg); } while (0)
  57
  58static unsigned int isoc_debug;
  59module_param(isoc_debug, int, 0644);
  60MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  61
  62#define cx231xx_isocdbg(fmt, arg...) \
  63do {\
  64        if (isoc_debug) { \
  65                printk(KERN_INFO "%s %s :"fmt, \
  66                         dev->name, __func__ , ##arg); \
  67        } \
  68  } while (0)
  69
  70MODULE_AUTHOR(DRIVER_AUTHOR);
  71MODULE_DESCRIPTION(DRIVER_DESC);
  72MODULE_LICENSE("GPL");
  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/* supported controls */
 104/* Common to all boards */
 105
 106/* ------------------------------------------------------------------- */
 107
 108static const struct v4l2_queryctrl no_ctl = {
 109        .name = "42",
 110        .flags = V4L2_CTRL_FLAG_DISABLED,
 111};
 112
 113static struct cx231xx_ctrl cx231xx_ctls[] = {
 114        /* --- video --- */
 115        {
 116                .v = {
 117                        .id = V4L2_CID_BRIGHTNESS,
 118                        .name = "Brightness",
 119                        .minimum = 0x00,
 120                        .maximum = 0xff,
 121                        .step = 1,
 122                        .default_value = 0x7f,
 123                        .type = V4L2_CTRL_TYPE_INTEGER,
 124                },
 125                .off = 128,
 126                .reg = LUMA_CTRL,
 127                .mask = 0x00ff,
 128                .shift = 0,
 129        }, {
 130                .v = {
 131                        .id = V4L2_CID_CONTRAST,
 132                        .name = "Contrast",
 133                        .minimum = 0,
 134                        .maximum = 0xff,
 135                        .step = 1,
 136                        .default_value = 0x3f,
 137                        .type = V4L2_CTRL_TYPE_INTEGER,
 138                },
 139                .off = 0,
 140                .reg = LUMA_CTRL,
 141                .mask = 0xff00,
 142                .shift = 8,
 143        }, {
 144                .v = {
 145                        .id = V4L2_CID_HUE,
 146                        .name = "Hue",
 147                        .minimum = 0,
 148                        .maximum = 0xff,
 149                        .step = 1,
 150                        .default_value = 0x7f,
 151                        .type = V4L2_CTRL_TYPE_INTEGER,
 152                },
 153                .off = 128,
 154                .reg = CHROMA_CTRL,
 155                .mask = 0xff0000,
 156                .shift = 16,
 157        }, {
 158        /* strictly, this only describes only U saturation.
 159        * V saturation is handled specially through code.
 160        */
 161                .v = {
 162                        .id = V4L2_CID_SATURATION,
 163                        .name = "Saturation",
 164                        .minimum = 0,
 165                        .maximum = 0xff,
 166                        .step = 1,
 167                        .default_value = 0x7f,
 168                        .type = V4L2_CTRL_TYPE_INTEGER,
 169                },
 170                .off = 0,
 171                .reg = CHROMA_CTRL,
 172                .mask = 0x00ff,
 173                .shift = 0,
 174        }, {
 175                /* --- audio --- */
 176                .v = {
 177                        .id = V4L2_CID_AUDIO_MUTE,
 178                        .name = "Mute",
 179                        .minimum = 0,
 180                        .maximum = 1,
 181                        .default_value = 1,
 182                        .type = V4L2_CTRL_TYPE_BOOLEAN,
 183                },
 184                .reg = PATH1_CTL1,
 185                .mask = (0x1f << 24),
 186                .shift = 24,
 187        }, {
 188                .v = {
 189                        .id = V4L2_CID_AUDIO_VOLUME,
 190                        .name = "Volume",
 191                        .minimum = 0,
 192                        .maximum = 0x3f,
 193                        .step = 1,
 194                        .default_value = 0x3f,
 195                        .type = V4L2_CTRL_TYPE_INTEGER,
 196                },
 197                .reg = PATH1_VOL_CTL,
 198                .mask = 0xff,
 199                .shift = 0,
 200        }
 201};
 202static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls);
 203
 204static const u32 cx231xx_user_ctrls[] = {
 205        V4L2_CID_USER_CLASS,
 206        V4L2_CID_BRIGHTNESS,
 207        V4L2_CID_CONTRAST,
 208        V4L2_CID_SATURATION,
 209        V4L2_CID_HUE,
 210        V4L2_CID_AUDIO_VOLUME,
 211#if 0
 212        V4L2_CID_AUDIO_BALANCE,
 213#endif
 214        V4L2_CID_AUDIO_MUTE,
 215        0
 216};
 217
 218static const u32 *ctrl_classes[] = {
 219        cx231xx_user_ctrls,
 220        NULL
 221};
 222
 223/* ------------------------------------------------------------------
 224        Video buffer and parser functions
 225   ------------------------------------------------------------------*/
 226
 227/*
 228 * Announces that a buffer were filled and request the next
 229 */
 230static inline void buffer_filled(struct cx231xx *dev,
 231                                 struct cx231xx_dmaqueue *dma_q,
 232                                 struct cx231xx_buffer *buf)
 233{
 234        /* Advice that buffer was filled */
 235        cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 236        buf->vb.state = VIDEOBUF_DONE;
 237        buf->vb.field_count++;
 238        do_gettimeofday(&buf->vb.ts);
 239
 240        dev->video_mode.isoc_ctl.buf = NULL;
 241
 242        list_del(&buf->vb.queue);
 243        wake_up(&buf->vb.done);
 244}
 245
 246static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 247{
 248        char *errmsg = "Unknown";
 249
 250        switch (status) {
 251        case -ENOENT:
 252                errmsg = "unlinked synchronuously";
 253                break;
 254        case -ECONNRESET:
 255                errmsg = "unlinked asynchronuously";
 256                break;
 257        case -ENOSR:
 258                errmsg = "Buffer error (overrun)";
 259                break;
 260        case -EPIPE:
 261                errmsg = "Stalled (device not responding)";
 262                break;
 263        case -EOVERFLOW:
 264                errmsg = "Babble (bad cable?)";
 265                break;
 266        case -EPROTO:
 267                errmsg = "Bit-stuff error (bad cable?)";
 268                break;
 269        case -EILSEQ:
 270                errmsg = "CRC/Timeout (could be anything)";
 271                break;
 272        case -ETIME:
 273                errmsg = "Device does not respond";
 274                break;
 275        }
 276        if (packet < 0) {
 277                cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 278        } else {
 279                cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 280                                packet, status, errmsg);
 281        }
 282}
 283
 284/*
 285 * video-buf generic routine to get the next available buffer
 286 */
 287static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 288                                struct cx231xx_buffer **buf)
 289{
 290        struct cx231xx_video_mode *vmode =
 291            container_of(dma_q, struct cx231xx_video_mode, vidq);
 292        struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 293
 294        char *outp;
 295
 296        if (list_empty(&dma_q->active)) {
 297                cx231xx_isocdbg("No active queue to serve\n");
 298                dev->video_mode.isoc_ctl.buf = NULL;
 299                *buf = NULL;
 300                return;
 301        }
 302
 303        /* Get the next buffer */
 304        *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 305
 306        /* Cleans up buffer - Usefull for testing for frame/URB loss */
 307        outp = videobuf_to_vmalloc(&(*buf)->vb);
 308        memset(outp, 0, (*buf)->vb.size);
 309
 310        dev->video_mode.isoc_ctl.buf = *buf;
 311
 312        return;
 313}
 314
 315/*
 316 * Controls the isoc copy of each urb packet
 317 */
 318static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 319{
 320        struct cx231xx_buffer *buf;
 321        struct cx231xx_dmaqueue *dma_q = urb->context;
 322        unsigned char *outp = NULL;
 323        int i, rc = 1;
 324        unsigned char *p_buffer;
 325        u32 bytes_parsed = 0, buffer_size = 0;
 326        u8 sav_eav = 0;
 327
 328        if (!dev)
 329                return 0;
 330
 331        if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 332                return 0;
 333
 334        if (urb->status < 0) {
 335                print_err_status(dev, -1, urb->status);
 336                if (urb->status == -ENOENT)
 337                        return 0;
 338        }
 339
 340        buf = dev->video_mode.isoc_ctl.buf;
 341        if (buf != NULL)
 342                outp = videobuf_to_vmalloc(&buf->vb);
 343
 344        for (i = 0; i < urb->number_of_packets; i++) {
 345                int status = urb->iso_frame_desc[i].status;
 346
 347                if (status < 0) {
 348                        print_err_status(dev, i, status);
 349                        if (urb->iso_frame_desc[i].status != -EPROTO)
 350                                continue;
 351                }
 352
 353                if (urb->iso_frame_desc[i].actual_length <= 0) {
 354                        /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 355                        continue;
 356                }
 357                if (urb->iso_frame_desc[i].actual_length >
 358                    dev->video_mode.max_pkt_size) {
 359                        cx231xx_isocdbg("packet bigger than packet size");
 360                        continue;
 361                }
 362
 363                /*  get buffer pointer and length */
 364                p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 365                buffer_size = urb->iso_frame_desc[i].actual_length;
 366                bytes_parsed = 0;
 367
 368                if (dma_q->is_partial_line) {
 369                        /* Handle the case of a partial line */
 370                        sav_eav = dma_q->last_sav;
 371                } else {
 372                        /* Check for a SAV/EAV overlapping
 373                                the buffer boundary */
 374                        sav_eav =
 375                            cx231xx_find_boundary_SAV_EAV(p_buffer,
 376                                                          dma_q->partial_buf,
 377                                                          &bytes_parsed);
 378                }
 379
 380                sav_eav &= 0xF0;
 381                /* Get the first line if we have some portion of an SAV/EAV from
 382                   the last buffer or a partial line  */
 383                if (sav_eav) {
 384                        bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 385                                sav_eav,        /* SAV/EAV */
 386                                p_buffer + bytes_parsed,        /* p_buffer */
 387                                buffer_size - bytes_parsed);/* buf size */
 388                }
 389
 390                /* Now parse data that is completely in this buffer */
 391                /* dma_q->is_partial_line = 0;  */
 392
 393                while (bytes_parsed < buffer_size) {
 394                        u32 bytes_used = 0;
 395
 396                        sav_eav = cx231xx_find_next_SAV_EAV(
 397                                p_buffer + bytes_parsed,        /* p_buffer */
 398                                buffer_size - bytes_parsed,     /* buf size */
 399                                &bytes_used);/* bytes used to get SAV/EAV */
 400
 401                        bytes_parsed += bytes_used;
 402
 403                        sav_eav &= 0xF0;
 404                        if (sav_eav && (bytes_parsed < buffer_size)) {
 405                                bytes_parsed += cx231xx_get_video_line(dev,
 406                                        dma_q, sav_eav, /* SAV/EAV */
 407                                        p_buffer + bytes_parsed,/* p_buffer */
 408                                        buffer_size - bytes_parsed);/*buf size*/
 409                        }
 410                }
 411
 412                /* Save the last four bytes of the buffer so we can check the
 413                   buffer boundary condition next time */
 414                memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 415                bytes_parsed = 0;
 416
 417        }
 418        return rc;
 419}
 420
 421u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 422                                 u32 *p_bytes_used)
 423{
 424        u32 bytes_used;
 425        u8 boundary_bytes[8];
 426        u8 sav_eav = 0;
 427
 428        *p_bytes_used = 0;
 429
 430        /* Create an array of the last 4 bytes of the last buffer and the first
 431           4 bytes of the current buffer. */
 432
 433        memcpy(boundary_bytes, partial_buf, 4);
 434        memcpy(boundary_bytes + 4, p_buffer, 4);
 435
 436        /* Check for the SAV/EAV in the boundary buffer */
 437        sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 438                                            &bytes_used);
 439
 440        if (sav_eav) {
 441                /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 442                   only those used in the new buffer */
 443                *p_bytes_used = bytes_used - 4;
 444        }
 445
 446        return sav_eav;
 447}
 448
 449u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 450{
 451        u32 i;
 452        u8 sav_eav = 0;
 453
 454        /*
 455         * Don't search if the buffer size is less than 4.  It causes a page
 456         * fault since buffer_size - 4 evaluates to a large number in that
 457         * case.
 458         */
 459        if (buffer_size < 4) {
 460                *p_bytes_used = buffer_size;
 461                return 0;
 462        }
 463
 464        for (i = 0; i < (buffer_size - 3); i++) {
 465
 466                if ((p_buffer[i] == 0xFF) &&
 467                    (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 468
 469                        *p_bytes_used = i + 4;
 470                        sav_eav = p_buffer[i + 3];
 471                        return sav_eav;
 472                }
 473        }
 474
 475        *p_bytes_used = buffer_size;
 476        return 0;
 477}
 478
 479u32 cx231xx_get_video_line(struct cx231xx *dev,
 480                           struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 481                           u8 *p_buffer, u32 buffer_size)
 482{
 483        u32 bytes_copied = 0;
 484        int current_field = -1;
 485
 486        switch (sav_eav) {
 487        case SAV_ACTIVE_VIDEO_FIELD1:
 488                /* looking for skipped line which occurred in PAL 720x480 mode.
 489                   In this case, there will be no active data contained
 490                   between the SAV and EAV */
 491                if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 492                    (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 493                    ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 494                     (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 495                     (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 496                     (p_buffer[3] == EAV_VBLANK_FIELD2)))
 497                        return bytes_copied;
 498                current_field = 1;
 499                break;
 500
 501        case SAV_ACTIVE_VIDEO_FIELD2:
 502                /* looking for skipped line which occurred in PAL 720x480 mode.
 503                   In this case, there will be no active data contained between
 504                   the SAV and EAV */
 505                if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 506                    (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 507                    ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 508                     (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 509                     (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 510                     (p_buffer[3] == EAV_VBLANK_FIELD2)))
 511                        return bytes_copied;
 512                current_field = 2;
 513                break;
 514        }
 515
 516        dma_q->last_sav = sav_eav;
 517
 518        bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 519                                               buffer_size, current_field);
 520
 521        return bytes_copied;
 522}
 523
 524u32 cx231xx_copy_video_line(struct cx231xx *dev,
 525                            struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 526                            u32 length, int field_number)
 527{
 528        u32 bytes_to_copy;
 529        struct cx231xx_buffer *buf;
 530        u32 _line_size = dev->width * 2;
 531
 532        if (dma_q->current_field != field_number)
 533                cx231xx_reset_video_buffer(dev, dma_q);
 534
 535        /* get the buffer pointer */
 536        buf = dev->video_mode.isoc_ctl.buf;
 537
 538        /* Remember the field number for next time */
 539        dma_q->current_field = field_number;
 540
 541        bytes_to_copy = dma_q->bytes_left_in_line;
 542        if (bytes_to_copy > length)
 543                bytes_to_copy = length;
 544
 545        if (dma_q->lines_completed >= dma_q->lines_per_field) {
 546                dma_q->bytes_left_in_line -= bytes_to_copy;
 547                dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 548                                          0 : 1;
 549                return 0;
 550        }
 551
 552        dma_q->is_partial_line = 1;
 553
 554        /* If we don't have a buffer, just return the number of bytes we would
 555           have copied if we had a buffer. */
 556        if (!buf) {
 557                dma_q->bytes_left_in_line -= bytes_to_copy;
 558                dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 559                                         ? 0 : 1;
 560                return bytes_to_copy;
 561        }
 562
 563        /* copy the data to video buffer */
 564        cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 565
 566        dma_q->pos += bytes_to_copy;
 567        dma_q->bytes_left_in_line -= bytes_to_copy;
 568
 569        if (dma_q->bytes_left_in_line == 0) {
 570                dma_q->bytes_left_in_line = _line_size;
 571                dma_q->lines_completed++;
 572                dma_q->is_partial_line = 0;
 573
 574                if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 575                        buffer_filled(dev, dma_q, buf);
 576
 577                        dma_q->pos = 0;
 578                        buf = NULL;
 579                        dma_q->lines_completed = 0;
 580                }
 581        }
 582
 583        return bytes_to_copy;
 584}
 585
 586void cx231xx_reset_video_buffer(struct cx231xx *dev,
 587                                struct cx231xx_dmaqueue *dma_q)
 588{
 589        struct cx231xx_buffer *buf;
 590
 591        /* handle the switch from field 1 to field 2 */
 592        if (dma_q->current_field == 1) {
 593                if (dma_q->lines_completed >= dma_q->lines_per_field)
 594                        dma_q->field1_done = 1;
 595                else
 596                        dma_q->field1_done = 0;
 597        }
 598
 599        buf = dev->video_mode.isoc_ctl.buf;
 600
 601        if (buf == NULL) {
 602                u8 *outp = NULL;
 603                /* first try to get the buffer */
 604                get_next_buf(dma_q, &buf);
 605
 606                if (buf)
 607                        outp = videobuf_to_vmalloc(&buf->vb);
 608
 609                dma_q->pos = 0;
 610                dma_q->field1_done = 0;
 611                dma_q->current_field = -1;
 612        }
 613
 614        /* reset the counters */
 615        dma_q->bytes_left_in_line = dev->width << 1;
 616        dma_q->lines_completed = 0;
 617}
 618
 619int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 620                    u8 *p_buffer, u32 bytes_to_copy)
 621{
 622        u8 *p_out_buffer = NULL;
 623        u32 current_line_bytes_copied = 0;
 624        struct cx231xx_buffer *buf;
 625        u32 _line_size = dev->width << 1;
 626        void *startwrite;
 627        int offset, lencopy;
 628
 629        buf = dev->video_mode.isoc_ctl.buf;
 630
 631        if (buf == NULL)
 632                return -1;
 633
 634        p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 635
 636        current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 637
 638        /* Offset field 2 one line from the top of the buffer */
 639        offset = (dma_q->current_field == 1) ? 0 : _line_size;
 640
 641        /* Offset for field 2 */
 642        startwrite = p_out_buffer + offset;
 643
 644        /* lines already completed in the current field */
 645        startwrite += (dma_q->lines_completed * _line_size * 2);
 646
 647        /* bytes already completed in the current line */
 648        startwrite += current_line_bytes_copied;
 649
 650        lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 651                  bytes_to_copy : dma_q->bytes_left_in_line;
 652
 653        if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 654                return 0;
 655
 656        /* The below copies the UYVY data straight into video buffer */
 657        cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 658
 659        return 0;
 660}
 661
 662void cx231xx_swab(u16 *from, u16 *to, u16 len)
 663{
 664        u16 i;
 665
 666        if (len <= 0)
 667                return;
 668
 669        for (i = 0; i < len / 2; i++)
 670                to[i] = (from[i] << 8) | (from[i] >> 8);
 671}
 672
 673u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 674{
 675        u8 buffer_complete = 0;
 676
 677        /* Dual field stream */
 678        buffer_complete = ((dma_q->current_field == 2) &&
 679                           (dma_q->lines_completed >= dma_q->lines_per_field) &&
 680                            dma_q->field1_done);
 681
 682        return buffer_complete;
 683}
 684
 685/* ------------------------------------------------------------------
 686        Videobuf operations
 687   ------------------------------------------------------------------*/
 688
 689static int
 690buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 691{
 692        struct cx231xx_fh *fh = vq->priv_data;
 693        struct cx231xx *dev = fh->dev;
 694        struct v4l2_frequency f;
 695
 696        *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 697        if (0 == *count)
 698                *count = CX231XX_DEF_BUF;
 699
 700        if (*count < CX231XX_MIN_BUF)
 701                *count = CX231XX_MIN_BUF;
 702
 703        /* Ask tuner to go to analog mode */
 704        memset(&f, 0, sizeof(f));
 705        f.frequency = dev->ctl_freq;
 706        f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 707
 708        call_all(dev, tuner, s_frequency, &f);
 709
 710        return 0;
 711}
 712
 713/* This is called *without* dev->slock held; please keep it that way */
 714static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 715{
 716        struct cx231xx_fh *fh = vq->priv_data;
 717        struct cx231xx *dev = fh->dev;
 718        unsigned long flags = 0;
 719
 720        if (in_interrupt())
 721                BUG();
 722
 723        /* We used to wait for the buffer to finish here, but this didn't work
 724           because, as we were keeping the state as VIDEOBUF_QUEUED,
 725           videobuf_queue_cancel marked it as finished for us.
 726           (Also, it could wedge forever if the hardware was misconfigured.)
 727
 728           This should be safe; by the time we get here, the buffer isn't
 729           queued anymore. If we ever start marking the buffers as
 730           VIDEOBUF_ACTIVE, it won't be, though.
 731         */
 732        spin_lock_irqsave(&dev->video_mode.slock, flags);
 733        if (dev->video_mode.isoc_ctl.buf == buf)
 734                dev->video_mode.isoc_ctl.buf = NULL;
 735        spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 736
 737        videobuf_vmalloc_free(&buf->vb);
 738        buf->vb.state = VIDEOBUF_NEEDS_INIT;
 739}
 740
 741static int
 742buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 743               enum v4l2_field field)
 744{
 745        struct cx231xx_fh *fh = vq->priv_data;
 746        struct cx231xx_buffer *buf =
 747            container_of(vb, struct cx231xx_buffer, vb);
 748        struct cx231xx *dev = fh->dev;
 749        int rc = 0, urb_init = 0;
 750
 751        /* The only currently supported format is 16 bits/pixel */
 752        buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 753                        + 7) >> 3;
 754        if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 755                return -EINVAL;
 756
 757        buf->vb.width = dev->width;
 758        buf->vb.height = dev->height;
 759        buf->vb.field = field;
 760
 761        if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 762                rc = videobuf_iolock(vq, &buf->vb, NULL);
 763                if (rc < 0)
 764                        goto fail;
 765        }
 766
 767        if (!dev->video_mode.isoc_ctl.num_bufs)
 768                urb_init = 1;
 769
 770        if (urb_init) {
 771                rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 772                                       CX231XX_NUM_BUFS,
 773                                       dev->video_mode.max_pkt_size,
 774                                       cx231xx_isoc_copy);
 775                if (rc < 0)
 776                        goto fail;
 777        }
 778
 779        buf->vb.state = VIDEOBUF_PREPARED;
 780        return 0;
 781
 782fail:
 783        free_buffer(vq, buf);
 784        return rc;
 785}
 786
 787static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 788{
 789        struct cx231xx_buffer *buf =
 790            container_of(vb, struct cx231xx_buffer, vb);
 791        struct cx231xx_fh *fh = vq->priv_data;
 792        struct cx231xx *dev = fh->dev;
 793        struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 794
 795        buf->vb.state = VIDEOBUF_QUEUED;
 796        list_add_tail(&buf->vb.queue, &vidq->active);
 797
 798}
 799
 800static void buffer_release(struct videobuf_queue *vq,
 801                           struct videobuf_buffer *vb)
 802{
 803        struct cx231xx_buffer *buf =
 804            container_of(vb, struct cx231xx_buffer, vb);
 805        struct cx231xx_fh *fh = vq->priv_data;
 806        struct cx231xx *dev = (struct cx231xx *)fh->dev;
 807
 808        cx231xx_isocdbg("cx231xx: called buffer_release\n");
 809
 810        free_buffer(vq, buf);
 811}
 812
 813static struct videobuf_queue_ops cx231xx_video_qops = {
 814        .buf_setup = buffer_setup,
 815        .buf_prepare = buffer_prepare,
 816        .buf_queue = buffer_queue,
 817        .buf_release = buffer_release,
 818};
 819
 820/*********************  v4l2 interface  **************************************/
 821
 822void video_mux(struct cx231xx *dev, int index)
 823{
 824        dev->video_input = index;
 825        dev->ctl_ainput = INPUT(index)->amux;
 826
 827        cx231xx_set_video_input_mux(dev, index);
 828
 829        cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 830
 831        cx231xx_set_audio_input(dev, dev->ctl_ainput);
 832
 833        cx231xx_info("video_mux : %d\n", index);
 834
 835        /* do mode control overrides if required */
 836        cx231xx_do_mode_ctrl_overrides(dev);
 837}
 838
 839/* Usage lock check functions */
 840static int res_get(struct cx231xx_fh *fh)
 841{
 842        struct cx231xx *dev = fh->dev;
 843        int rc = 0;
 844
 845        /* This instance already has stream_on */
 846        if (fh->stream_on)
 847                return rc;
 848
 849        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 850                if (dev->stream_on)
 851                        return -EBUSY;
 852                dev->stream_on = 1;
 853        } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 854                if (dev->vbi_stream_on)
 855                        return -EBUSY;
 856                dev->vbi_stream_on = 1;
 857        } else
 858                return -EINVAL;
 859
 860        fh->stream_on = 1;
 861
 862        return rc;
 863}
 864
 865static int res_check(struct cx231xx_fh *fh)
 866{
 867        return fh->stream_on;
 868}
 869
 870static void res_free(struct cx231xx_fh *fh)
 871{
 872        struct cx231xx *dev = fh->dev;
 873
 874        fh->stream_on = 0;
 875
 876        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 877                dev->stream_on = 0;
 878        if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 879                dev->vbi_stream_on = 0;
 880}
 881
 882static int check_dev(struct cx231xx *dev)
 883{
 884        if (dev->state & DEV_DISCONNECTED) {
 885                cx231xx_errdev("v4l2 ioctl: device not present\n");
 886                return -ENODEV;
 887        }
 888
 889        if (dev->state & DEV_MISCONFIGURED) {
 890                cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
 891                               "close and open it again\n");
 892                return -EIO;
 893        }
 894        return 0;
 895}
 896
 897static void get_scale(struct cx231xx *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 >= 0x4000)
 906                *hscale = 0x3fff;
 907
 908        *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 909        if (*vscale >= 0x4000)
 910                *vscale = 0x3fff;
 911}
 912
 913/* ------------------------------------------------------------------
 914        IOCTL vidioc handling
 915   ------------------------------------------------------------------*/
 916
 917static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 918                                struct v4l2_format *f)
 919{
 920        struct cx231xx_fh *fh = priv;
 921        struct cx231xx *dev = fh->dev;
 922
 923        mutex_lock(&dev->lock);
 924
 925        f->fmt.pix.width = dev->width;
 926        f->fmt.pix.height = dev->height;
 927        f->fmt.pix.pixelformat = dev->format->fourcc;
 928        f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 929        f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 930        f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 931
 932        f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 933
 934        mutex_unlock(&dev->lock);
 935
 936        return 0;
 937}
 938
 939static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 940{
 941        unsigned int i;
 942
 943        for (i = 0; i < ARRAY_SIZE(format); i++)
 944                if (format[i].fourcc == fourcc)
 945                        return &format[i];
 946
 947        return NULL;
 948}
 949
 950static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 951                                  struct v4l2_format *f)
 952{
 953        struct cx231xx_fh *fh = priv;
 954        struct cx231xx *dev = fh->dev;
 955        unsigned int width = f->fmt.pix.width;
 956        unsigned int height = f->fmt.pix.height;
 957        unsigned int maxw = norm_maxw(dev);
 958        unsigned int maxh = norm_maxh(dev);
 959        unsigned int hscale, vscale;
 960        struct cx231xx_fmt *fmt;
 961
 962        fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 963        if (!fmt) {
 964                cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 965                                 f->fmt.pix.pixelformat);
 966                return -EINVAL;
 967        }
 968
 969        /* width must even because of the YUYV format
 970           height must be even because of interlacing */
 971        v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 972
 973        get_scale(dev, width, height, &hscale, &vscale);
 974
 975        width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 976        height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 977
 978        f->fmt.pix.width = width;
 979        f->fmt.pix.height = height;
 980        f->fmt.pix.pixelformat = fmt->fourcc;
 981        f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 982        f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 983        f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 984        f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 985
 986        return 0;
 987}
 988
 989static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 990                                struct v4l2_format *f)
 991{
 992        struct cx231xx_fh *fh = priv;
 993        struct cx231xx *dev = fh->dev;
 994        int rc;
 995        struct cx231xx_fmt *fmt;
 996        struct v4l2_mbus_framefmt mbus_fmt;
 997
 998        rc = check_dev(dev);
 999        if (rc < 0)
1000                return rc;
1001
1002        mutex_lock(&dev->lock);
1003
1004        vidioc_try_fmt_vid_cap(file, priv, f);
1005
1006        fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1007        if (!fmt) {
1008                rc = -EINVAL;
1009                goto out;
1010        }
1011
1012        if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1013                cx231xx_errdev("%s queue busy\n", __func__);
1014                rc = -EBUSY;
1015                goto out;
1016        }
1017
1018        if (dev->stream_on && !fh->stream_on) {
1019                cx231xx_errdev("%s device in use by another fh\n", __func__);
1020                rc = -EBUSY;
1021                goto out;
1022        }
1023
1024        /* set new image size */
1025        dev->width = f->fmt.pix.width;
1026        dev->height = f->fmt.pix.height;
1027        dev->format = fmt;
1028        get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1029
1030        v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
1031        call_all(dev, video, s_mbus_fmt, &mbus_fmt);
1032        v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
1033
1034        /* Set the correct alternate setting for this resolution */
1035        cx231xx_resolution_set(dev);
1036
1037out:
1038        mutex_unlock(&dev->lock);
1039        return rc;
1040}
1041
1042static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1043{
1044        struct cx231xx_fh *fh = priv;
1045        struct cx231xx *dev = fh->dev;
1046
1047        *id = dev->norm;
1048        return 0;
1049}
1050
1051static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1052{
1053        struct cx231xx_fh *fh = priv;
1054        struct cx231xx *dev = fh->dev;
1055        struct v4l2_format f;
1056        int rc;
1057
1058        rc = check_dev(dev);
1059        if (rc < 0)
1060                return rc;
1061
1062        cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1063
1064        mutex_lock(&dev->lock);
1065        dev->norm = *norm;
1066
1067        /* Adjusts width/height, if needed */
1068        f.fmt.pix.width = dev->width;
1069        f.fmt.pix.height = dev->height;
1070        vidioc_try_fmt_vid_cap(file, priv, &f);
1071
1072        /* set new image size */
1073        dev->width = f.fmt.pix.width;
1074        dev->height = f.fmt.pix.height;
1075        get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1076
1077        call_all(dev, core, s_std, dev->norm);
1078
1079        mutex_unlock(&dev->lock);
1080
1081        cx231xx_resolution_set(dev);
1082
1083        /* do mode control overrides */
1084        cx231xx_do_mode_ctrl_overrides(dev);
1085
1086        return 0;
1087}
1088
1089static const char *iname[] = {
1090        [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1091        [CX231XX_VMUX_SVIDEO]     = "S-Video",
1092        [CX231XX_VMUX_TELEVISION] = "Television",
1093        [CX231XX_VMUX_CABLE]      = "Cable TV",
1094        [CX231XX_VMUX_DVB]        = "DVB",
1095        [CX231XX_VMUX_DEBUG]      = "for debug only",
1096};
1097
1098static int vidioc_enum_input(struct file *file, void *priv,
1099                             struct v4l2_input *i)
1100{
1101        struct cx231xx_fh *fh = priv;
1102        struct cx231xx *dev = fh->dev;
1103        unsigned int n;
1104
1105        n = i->index;
1106        if (n >= MAX_CX231XX_INPUT)
1107                return -EINVAL;
1108        if (0 == INPUT(n)->type)
1109                return -EINVAL;
1110
1111        i->index = n;
1112        i->type = V4L2_INPUT_TYPE_CAMERA;
1113
1114        strcpy(i->name, iname[INPUT(n)->type]);
1115
1116        if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1117            (CX231XX_VMUX_CABLE == INPUT(n)->type))
1118                i->type = V4L2_INPUT_TYPE_TUNER;
1119
1120        i->std = dev->vdev->tvnorms;
1121
1122        return 0;
1123}
1124
1125static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1126{
1127        struct cx231xx_fh *fh = priv;
1128        struct cx231xx *dev = fh->dev;
1129
1130        *i = dev->video_input;
1131
1132        return 0;
1133}
1134
1135static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1136{
1137        struct cx231xx_fh *fh = priv;
1138        struct cx231xx *dev = fh->dev;
1139        int rc;
1140
1141        rc = check_dev(dev);
1142        if (rc < 0)
1143                return rc;
1144
1145        if (i >= MAX_CX231XX_INPUT)
1146                return -EINVAL;
1147        if (0 == INPUT(i)->type)
1148                return -EINVAL;
1149
1150        mutex_lock(&dev->lock);
1151
1152        video_mux(dev, i);
1153
1154        mutex_unlock(&dev->lock);
1155        return 0;
1156}
1157
1158static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1159{
1160        struct cx231xx_fh *fh = priv;
1161        struct cx231xx *dev = fh->dev;
1162
1163        switch (a->index) {
1164        case CX231XX_AMUX_VIDEO:
1165                strcpy(a->name, "Television");
1166                break;
1167        case CX231XX_AMUX_LINE_IN:
1168                strcpy(a->name, "Line In");
1169                break;
1170        default:
1171                return -EINVAL;
1172        }
1173
1174        a->index = dev->ctl_ainput;
1175        a->capability = V4L2_AUDCAP_STEREO;
1176
1177        return 0;
1178}
1179
1180static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1181{
1182        struct cx231xx_fh *fh = priv;
1183        struct cx231xx *dev = fh->dev;
1184        int status = 0;
1185
1186        /* Doesn't allow manual routing */
1187        if (a->index != dev->ctl_ainput)
1188                return -EINVAL;
1189
1190        dev->ctl_ainput = INPUT(a->index)->amux;
1191        status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1192
1193        return status;
1194}
1195
1196static int vidioc_queryctrl(struct file *file, void *priv,
1197                            struct v4l2_queryctrl *qc)
1198{
1199        struct cx231xx_fh *fh = priv;
1200        struct cx231xx *dev = fh->dev;
1201        int id = qc->id;
1202        int i;
1203        int rc;
1204
1205        rc = check_dev(dev);
1206        if (rc < 0)
1207                return rc;
1208
1209        qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1210        if (unlikely(qc->id == 0))
1211                return -EINVAL;
1212
1213        memset(qc, 0, sizeof(*qc));
1214
1215        qc->id = id;
1216
1217        if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1218                return -EINVAL;
1219
1220        for (i = 0; i < CX231XX_CTLS; i++)
1221                if (cx231xx_ctls[i].v.id == qc->id)
1222                        break;
1223
1224        if (i == CX231XX_CTLS) {
1225                *qc = no_ctl;
1226                return 0;
1227        }
1228        *qc = cx231xx_ctls[i].v;
1229
1230        mutex_lock(&dev->lock);
1231        call_all(dev, core, queryctrl, qc);
1232        mutex_unlock(&dev->lock);
1233
1234        if (qc->type)
1235                return 0;
1236        else
1237                return -EINVAL;
1238}
1239
1240static int vidioc_g_ctrl(struct file *file, void *priv,
1241                         struct v4l2_control *ctrl)
1242{
1243        struct cx231xx_fh *fh = priv;
1244        struct cx231xx *dev = fh->dev;
1245        int rc;
1246
1247        rc = check_dev(dev);
1248        if (rc < 0)
1249                return rc;
1250
1251        mutex_lock(&dev->lock);
1252        call_all(dev, core, g_ctrl, ctrl);
1253        mutex_unlock(&dev->lock);
1254        return rc;
1255}
1256
1257static int vidioc_s_ctrl(struct file *file, void *priv,
1258                         struct v4l2_control *ctrl)
1259{
1260        struct cx231xx_fh *fh = priv;
1261        struct cx231xx *dev = fh->dev;
1262        int rc;
1263
1264        rc = check_dev(dev);
1265        if (rc < 0)
1266                return rc;
1267
1268        mutex_lock(&dev->lock);
1269        call_all(dev, core, s_ctrl, ctrl);
1270        mutex_unlock(&dev->lock);
1271        return rc;
1272}
1273
1274static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1275{
1276        struct cx231xx_fh *fh = priv;
1277        struct cx231xx *dev = fh->dev;
1278        int rc;
1279
1280        rc = check_dev(dev);
1281        if (rc < 0)
1282                return rc;
1283
1284        if (0 != t->index)
1285                return -EINVAL;
1286
1287        strcpy(t->name, "Tuner");
1288
1289        t->type = V4L2_TUNER_ANALOG_TV;
1290        t->capability = V4L2_TUNER_CAP_NORM;
1291        t->rangehigh = 0xffffffffUL;
1292        t->signal = 0xffff;     /* LOCKED */
1293
1294        return 0;
1295}
1296
1297static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1298{
1299        struct cx231xx_fh *fh = priv;
1300        struct cx231xx *dev = fh->dev;
1301        int rc;
1302
1303        rc = check_dev(dev);
1304        if (rc < 0)
1305                return rc;
1306
1307        if (0 != t->index)
1308                return -EINVAL;
1309#if 0
1310        mutex_lock(&dev->lock);
1311        call_all(dev, tuner, s_tuner, t);
1312        mutex_unlock(&dev->lock);
1313#endif
1314        return 0;
1315}
1316
1317static int vidioc_g_frequency(struct file *file, void *priv,
1318                              struct v4l2_frequency *f)
1319{
1320        struct cx231xx_fh *fh = priv;
1321        struct cx231xx *dev = fh->dev;
1322
1323        mutex_lock(&dev->lock);
1324        f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1325        f->frequency = dev->ctl_freq;
1326
1327        call_all(dev, tuner, g_frequency, f);
1328
1329        mutex_unlock(&dev->lock);
1330
1331        return 0;
1332}
1333
1334static int vidioc_s_frequency(struct file *file, void *priv,
1335                              struct v4l2_frequency *f)
1336{
1337        struct cx231xx_fh *fh = priv;
1338        struct cx231xx *dev = fh->dev;
1339        int rc;
1340
1341        rc = check_dev(dev);
1342        if (rc < 0)
1343                return rc;
1344
1345        if (0 != f->tuner)
1346                return -EINVAL;
1347
1348        if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1349                return -EINVAL;
1350        if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1351                return -EINVAL;
1352
1353        /* set pre channel change settings in DIF first */
1354        rc = cx231xx_tuner_pre_channel_change(dev);
1355
1356        mutex_lock(&dev->lock);
1357
1358        dev->ctl_freq = f->frequency;
1359
1360        if (dev->tuner_type == TUNER_XC5000) {
1361                if (dev->cx231xx_set_analog_freq != NULL)
1362                        dev->cx231xx_set_analog_freq(dev, f->frequency);
1363        } else
1364                call_all(dev, tuner, s_frequency, f);
1365
1366        mutex_unlock(&dev->lock);
1367
1368        /* set post channel change settings in DIF first */
1369        rc = cx231xx_tuner_post_channel_change(dev);
1370
1371        cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1372
1373        return rc;
1374}
1375
1376#ifdef CONFIG_VIDEO_ADV_DEBUG
1377
1378/*
1379  -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1380                                chip=<chip>[,min=<addr>,max=<addr>]
1381                     dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1382  -r, --set-register=type=<host/i2cdrv/i2caddr>,
1383                                chip=<chip>,reg=<addr>,val=<val>
1384                     set the register [VIDIOC_DBG_S_REGISTER]
1385
1386  if type == host, then <chip> is the hosts chip ID (default 0)
1387  if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1388  if type == i2caddr, then <chip> is the 7-bit I2C address
1389*/
1390
1391static int vidioc_g_register(struct file *file, void *priv,
1392                             struct v4l2_dbg_register *reg)
1393{
1394        struct cx231xx_fh *fh = priv;
1395        struct cx231xx *dev = fh->dev;
1396        int ret = 0;
1397        u8 value[4] = { 0, 0, 0, 0 };
1398        u32 data = 0;
1399
1400        switch (reg->match.type) {
1401        case V4L2_CHIP_MATCH_HOST:
1402                switch (reg->match.addr) {
1403                case 0: /* Cx231xx - internal registers */
1404                        ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1405                                                  (u16)reg->reg, value, 4);
1406                        reg->val = value[0] | value[1] << 8 |
1407                                   value[2] << 16 | value[3] << 24;
1408                        break;
1409                case 1: /* AFE - read byte */
1410                        ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1411                                                  (u16)reg->reg, 2, &data, 1);
1412                        reg->val = le32_to_cpu(data & 0xff);
1413                        break;
1414                case 14: /* AFE - read dword */
1415                        ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1416                                                  (u16)reg->reg, 2, &data, 4);
1417                        reg->val = le32_to_cpu(data);
1418                        break;
1419                case 2: /* Video Block - read byte */
1420                        ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1421                                                  (u16)reg->reg, 2, &data, 1);
1422                        reg->val = le32_to_cpu(data & 0xff);
1423                        break;
1424                case 24: /* Video Block - read dword */
1425                        ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1426                                                  (u16)reg->reg, 2, &data, 4);
1427                        reg->val = le32_to_cpu(data);
1428                        break;
1429                case 3: /* I2S block - read byte */
1430                        ret = cx231xx_read_i2c_data(dev,
1431                                                    I2S_BLK_DEVICE_ADDRESS,
1432                                                    (u16)reg->reg, 1,
1433                                                    &data, 1);
1434                        reg->val = le32_to_cpu(data & 0xff);
1435                        break;
1436                case 34: /* I2S Block - read dword */
1437                        ret =
1438                            cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1439                                                  (u16)reg->reg, 1, &data, 4);
1440                        reg->val = le32_to_cpu(data);
1441                        break;
1442                }
1443                return ret < 0 ? ret : 0;
1444
1445        case V4L2_CHIP_MATCH_I2C_DRIVER:
1446                call_all(dev, core, g_register, reg);
1447                return 0;
1448        case V4L2_CHIP_MATCH_I2C_ADDR:
1449                /* Not supported yet */
1450                return -EINVAL;
1451        default:
1452                if (!v4l2_chip_match_host(&reg->match))
1453                        return -EINVAL;
1454        }
1455
1456        mutex_lock(&dev->lock);
1457        call_all(dev, core, g_register, reg);
1458        mutex_unlock(&dev->lock);
1459
1460        return ret;
1461}
1462
1463static int vidioc_s_register(struct file *file, void *priv,
1464                             struct v4l2_dbg_register *reg)
1465{
1466        struct cx231xx_fh *fh = priv;
1467        struct cx231xx *dev = fh->dev;
1468        int ret = 0;
1469        __le64 buf;
1470        u32 value;
1471        u8 data[4] = { 0, 0, 0, 0 };
1472
1473        buf = cpu_to_le64(reg->val);
1474
1475        switch (reg->match.type) {
1476        case V4L2_CHIP_MATCH_HOST:
1477                {
1478                        value = (u32) buf & 0xffffffff;
1479
1480                        switch (reg->match.addr) {
1481                        case 0: /* cx231xx internal registers */
1482                                data[0] = (u8) value;
1483                                data[1] = (u8) (value >> 8);
1484                                data[2] = (u8) (value >> 16);
1485                                data[3] = (u8) (value >> 24);
1486                                ret = cx231xx_write_ctrl_reg(dev,
1487                                                           VRT_SET_REGISTER,
1488                                                           (u16)reg->reg, data,
1489                                                           4);
1490                                break;
1491                        case 1: /* AFE - read byte */
1492                                ret = cx231xx_write_i2c_data(dev,
1493                                                        AFE_DEVICE_ADDRESS,
1494                                                        (u16)reg->reg, 2,
1495                                                        value, 1);
1496                                break;
1497                        case 14: /* AFE - read dword */
1498                                ret = cx231xx_write_i2c_data(dev,
1499                                                        AFE_DEVICE_ADDRESS,
1500                                                        (u16)reg->reg, 2,
1501                                                        value, 4);
1502                                break;
1503                        case 2: /* Video Block - read byte */
1504                                ret =
1505                                    cx231xx_write_i2c_data(dev,
1506                                                        VID_BLK_I2C_ADDRESS,
1507                                                        (u16)reg->reg, 2,
1508                                                        value, 1);
1509                                break;
1510                        case 24: /* Video Block - read dword */
1511                                ret =
1512                                    cx231xx_write_i2c_data(dev,
1513                                                        VID_BLK_I2C_ADDRESS,
1514                                                        (u16)reg->reg, 2,
1515                                                        value, 4);
1516                                break;
1517                        case 3: /* I2S block - read byte */
1518                                ret =
1519                                    cx231xx_write_i2c_data(dev,
1520                                                        I2S_BLK_DEVICE_ADDRESS,
1521                                                        (u16)reg->reg, 1,
1522                                                        value, 1);
1523                                break;
1524                        case 34: /* I2S block - read dword */
1525                                ret =
1526                                    cx231xx_write_i2c_data(dev,
1527                                                        I2S_BLK_DEVICE_ADDRESS,
1528                                                        (u16)reg->reg, 1,
1529                                                        value, 4);
1530                                break;
1531                        }
1532                }
1533                return ret < 0 ? ret : 0;
1534
1535        default:
1536                break;
1537        }
1538
1539        mutex_lock(&dev->lock);
1540        call_all(dev, core, s_register, reg);
1541        mutex_unlock(&dev->lock);
1542
1543        return ret;
1544}
1545#endif
1546
1547static int vidioc_cropcap(struct file *file, void *priv,
1548                          struct v4l2_cropcap *cc)
1549{
1550        struct cx231xx_fh *fh = priv;
1551        struct cx231xx *dev = fh->dev;
1552
1553        if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1554                return -EINVAL;
1555
1556        cc->bounds.left = 0;
1557        cc->bounds.top = 0;
1558        cc->bounds.width = dev->width;
1559        cc->bounds.height = dev->height;
1560        cc->defrect = cc->bounds;
1561        cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1562        cc->pixelaspect.denominator = 59;
1563
1564        return 0;
1565}
1566
1567static int vidioc_streamon(struct file *file, void *priv,
1568                           enum v4l2_buf_type type)
1569{
1570        struct cx231xx_fh *fh = priv;
1571        struct cx231xx *dev = fh->dev;
1572        int rc;
1573
1574        rc = check_dev(dev);
1575        if (rc < 0)
1576                return rc;
1577
1578        mutex_lock(&dev->lock);
1579        rc = res_get(fh);
1580
1581        if (likely(rc >= 0))
1582                rc = videobuf_streamon(&fh->vb_vidq);
1583
1584        call_all(dev, video, s_stream, 1);
1585
1586        mutex_unlock(&dev->lock);
1587
1588        return rc;
1589}
1590
1591static int vidioc_streamoff(struct file *file, void *priv,
1592                            enum v4l2_buf_type type)
1593{
1594        struct cx231xx_fh *fh = priv;
1595        struct cx231xx *dev = fh->dev;
1596        int rc;
1597
1598        rc = check_dev(dev);
1599        if (rc < 0)
1600                return rc;
1601
1602        if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1603            (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1604                return -EINVAL;
1605        if (type != fh->type)
1606                return -EINVAL;
1607
1608        mutex_lock(&dev->lock);
1609
1610        cx25840_call(dev, video, s_stream, 0);
1611
1612        videobuf_streamoff(&fh->vb_vidq);
1613        res_free(fh);
1614
1615        mutex_unlock(&dev->lock);
1616
1617        return 0;
1618}
1619
1620static int vidioc_querycap(struct file *file, void *priv,
1621                           struct v4l2_capability *cap)
1622{
1623        struct cx231xx_fh *fh = priv;
1624        struct cx231xx *dev = fh->dev;
1625
1626        strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1627        strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1628        usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1629
1630        cap->version = CX231XX_VERSION_CODE;
1631
1632        cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1633#if 0
1634                V4L2_CAP_SLICED_VBI_CAPTURE |
1635#endif
1636                V4L2_CAP_VIDEO_CAPTURE  |
1637                V4L2_CAP_AUDIO          |
1638                V4L2_CAP_READWRITE      |
1639                V4L2_CAP_STREAMING;
1640
1641        if (dev->tuner_type != TUNER_ABSENT)
1642                cap->capabilities |= V4L2_CAP_TUNER;
1643
1644        return 0;
1645}
1646
1647static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1648                                   struct v4l2_fmtdesc *f)
1649{
1650        if (unlikely(f->index >= ARRAY_SIZE(format)))
1651                return -EINVAL;
1652
1653        strlcpy(f->description, format[f->index].name, sizeof(f->description));
1654        f->pixelformat = format[f->index].fourcc;
1655
1656        return 0;
1657}
1658
1659/* Sliced VBI ioctls */
1660static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1661                                       struct v4l2_format *f)
1662{
1663        struct cx231xx_fh *fh = priv;
1664        struct cx231xx *dev = fh->dev;
1665        int rc;
1666
1667        rc = check_dev(dev);
1668        if (rc < 0)
1669                return rc;
1670
1671        mutex_lock(&dev->lock);
1672
1673        f->fmt.sliced.service_set = 0;
1674
1675        call_all(dev, vbi, g_sliced_fmt, &f->fmt.sliced);
1676
1677        if (f->fmt.sliced.service_set == 0)
1678                rc = -EINVAL;
1679
1680        mutex_unlock(&dev->lock);
1681        return rc;
1682}
1683
1684static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1685                                         struct v4l2_format *f)
1686{
1687        struct cx231xx_fh *fh = priv;
1688        struct cx231xx *dev = fh->dev;
1689        int rc;
1690
1691        rc = check_dev(dev);
1692        if (rc < 0)
1693                return rc;
1694
1695        mutex_lock(&dev->lock);
1696        call_all(dev, vbi, g_sliced_fmt, &f->fmt.sliced);
1697        mutex_unlock(&dev->lock);
1698
1699        if (f->fmt.sliced.service_set == 0)
1700                return -EINVAL;
1701
1702        return 0;
1703}
1704
1705/* RAW VBI ioctls */
1706
1707static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1708                                struct v4l2_format *f)
1709{
1710        struct cx231xx_fh *fh = priv;
1711        struct cx231xx *dev = fh->dev;
1712
1713        f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1714            35468950 : 28636363;
1715        f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1716        f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1717        f->fmt.vbi.offset = 64 * 4;
1718        f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1719            PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1720        f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1721            PAL_VBI_LINES : NTSC_VBI_LINES;
1722        f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1723            PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1724        f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1725
1726        return 0;
1727
1728}
1729
1730static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1731                                  struct v4l2_format *f)
1732{
1733        struct cx231xx_fh *fh = priv;
1734        struct cx231xx *dev = fh->dev;
1735
1736        if (dev->vbi_stream_on && !fh->stream_on) {
1737                cx231xx_errdev("%s device in use by another fh\n", __func__);
1738                return -EBUSY;
1739        }
1740
1741        f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1742        f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1743            35468950 : 28636363;
1744        f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1745        f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1746        f->fmt.vbi.offset = 244;
1747        f->fmt.vbi.flags = 0;
1748        f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1749            PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1750        f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1751            PAL_VBI_LINES : NTSC_VBI_LINES;
1752        f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1753            PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1754        f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1755
1756        return 0;
1757
1758}
1759
1760static int vidioc_reqbufs(struct file *file, void *priv,
1761                          struct v4l2_requestbuffers *rb)
1762{
1763        struct cx231xx_fh *fh = priv;
1764        struct cx231xx *dev = fh->dev;
1765        int rc;
1766
1767        rc = check_dev(dev);
1768        if (rc < 0)
1769                return rc;
1770
1771        return videobuf_reqbufs(&fh->vb_vidq, rb);
1772}
1773
1774static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1775{
1776        struct cx231xx_fh *fh = priv;
1777        struct cx231xx *dev = fh->dev;
1778        int rc;
1779
1780        rc = check_dev(dev);
1781        if (rc < 0)
1782                return rc;
1783
1784        return videobuf_querybuf(&fh->vb_vidq, b);
1785}
1786
1787static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1788{
1789        struct cx231xx_fh *fh = priv;
1790        struct cx231xx *dev = fh->dev;
1791        int rc;
1792
1793        rc = check_dev(dev);
1794        if (rc < 0)
1795                return rc;
1796
1797        return videobuf_qbuf(&fh->vb_vidq, b);
1798}
1799
1800static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1801{
1802        struct cx231xx_fh *fh = priv;
1803        struct cx231xx *dev = fh->dev;
1804        int rc;
1805
1806        rc = check_dev(dev);
1807        if (rc < 0)
1808                return rc;
1809
1810        return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1811}
1812
1813#ifdef CONFIG_VIDEO_V4L1_COMPAT
1814static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1815{
1816        struct cx231xx_fh *fh = priv;
1817
1818        return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1819}
1820#endif
1821
1822/* ----------------------------------------------------------- */
1823/* RADIO ESPECIFIC IOCTLS                                      */
1824/* ----------------------------------------------------------- */
1825
1826static int radio_querycap(struct file *file, void *priv,
1827                          struct v4l2_capability *cap)
1828{
1829        struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1830
1831        strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1832        strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1833        usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1834
1835        cap->version = CX231XX_VERSION_CODE;
1836        cap->capabilities = V4L2_CAP_TUNER;
1837        return 0;
1838}
1839
1840static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1841{
1842        struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1843
1844        if (unlikely(t->index > 0))
1845                return -EINVAL;
1846
1847        strcpy(t->name, "Radio");
1848        t->type = V4L2_TUNER_RADIO;
1849
1850        mutex_lock(&dev->lock);
1851        call_all(dev, tuner, s_tuner, t);
1852        mutex_unlock(&dev->lock);
1853
1854        return 0;
1855}
1856
1857static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1858{
1859        if (i->index != 0)
1860                return -EINVAL;
1861        strcpy(i->name, "Radio");
1862        i->type = V4L2_INPUT_TYPE_TUNER;
1863
1864        return 0;
1865}
1866
1867static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1868{
1869        if (unlikely(a->index))
1870                return -EINVAL;
1871
1872        strcpy(a->name, "Radio");
1873        return 0;
1874}
1875
1876static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1877{
1878        struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1879
1880        if (0 != t->index)
1881                return -EINVAL;
1882
1883        mutex_lock(&dev->lock);
1884        call_all(dev, tuner, s_tuner, t);
1885        mutex_unlock(&dev->lock);
1886
1887        return 0;
1888}
1889
1890static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1891{
1892        return 0;
1893}
1894
1895static int radio_s_input(struct file *file, void *fh, unsigned int i)
1896{
1897        return 0;
1898}
1899
1900static int radio_queryctrl(struct file *file, void *priv,
1901                           struct v4l2_queryctrl *c)
1902{
1903        int i;
1904
1905        if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1906                return -EINVAL;
1907        if (c->id == V4L2_CID_AUDIO_MUTE) {
1908                for (i = 0; i < CX231XX_CTLS; i++) {
1909                        if (cx231xx_ctls[i].v.id == c->id)
1910                                break;
1911                }
1912                if (i == CX231XX_CTLS)
1913                        return -EINVAL;
1914                *c = cx231xx_ctls[i].v;
1915        } else
1916                *c = no_ctl;
1917        return 0;
1918}
1919
1920/*
1921 * cx231xx_v4l2_open()
1922 * inits the device and starts isoc transfer
1923 */
1924static int cx231xx_v4l2_open(struct file *filp)
1925{
1926        int errCode = 0, radio = 0;
1927        struct video_device *vdev = video_devdata(filp);
1928        struct cx231xx *dev = video_drvdata(filp);
1929        struct cx231xx_fh *fh;
1930        enum v4l2_buf_type fh_type = 0;
1931
1932        switch (vdev->vfl_type) {
1933        case VFL_TYPE_GRABBER:
1934                fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1935                break;
1936        case VFL_TYPE_VBI:
1937                fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1938                break;
1939        case VFL_TYPE_RADIO:
1940                radio = 1;
1941                break;
1942        }
1943
1944        mutex_lock(&dev->lock);
1945
1946        cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1947                         video_device_node_name(vdev), v4l2_type_names[fh_type],
1948                         dev->users);
1949
1950#if 0
1951        errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1952        if (errCode < 0) {
1953                cx231xx_errdev
1954                    ("Device locked on digital mode. Can't open analog\n");
1955                mutex_unlock(&dev->lock);
1956                return -EBUSY;
1957        }
1958#endif
1959
1960        fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1961        if (!fh) {
1962                cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1963                mutex_unlock(&dev->lock);
1964                return -ENOMEM;
1965        }
1966        fh->dev = dev;
1967        fh->radio = radio;
1968        fh->type = fh_type;
1969        filp->private_data = fh;
1970
1971        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1972                dev->width = norm_maxw(dev);
1973                dev->height = norm_maxh(dev);
1974                dev->hscale = 0;
1975                dev->vscale = 0;
1976
1977                /* Power up in Analog TV mode */
1978                cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1979
1980#if 0
1981                cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1982#endif
1983                cx231xx_resolution_set(dev);
1984
1985                /* set video alternate setting */
1986                cx231xx_set_video_alternate(dev);
1987
1988                /* Needed, since GPIO might have disabled power of
1989                   some i2c device */
1990                cx231xx_config_i2c(dev);
1991
1992                /* device needs to be initialized before isoc transfer */
1993                dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1994                video_mux(dev, dev->video_input);
1995
1996        }
1997        if (fh->radio) {
1998                cx231xx_videodbg("video_open: setting radio device\n");
1999
2000                /* cx231xx_start_radio(dev); */
2001
2002                call_all(dev, tuner, s_radio);
2003        }
2004
2005        dev->users++;
2006
2007        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2008                videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2009                                            NULL, &dev->video_mode.slock,
2010                                            fh->type, V4L2_FIELD_INTERLACED,
2011                                            sizeof(struct cx231xx_buffer), fh);
2012        if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2013                /* Set the required alternate setting  VBI interface works in
2014                   Bulk mode only */
2015                cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2016
2017                videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2018                                            NULL, &dev->vbi_mode.slock,
2019                                            fh->type, V4L2_FIELD_SEQ_TB,
2020                                            sizeof(struct cx231xx_buffer), fh);
2021        }
2022
2023        mutex_unlock(&dev->lock);
2024
2025        return errCode;
2026}
2027
2028/*
2029 * cx231xx_realease_resources()
2030 * unregisters the v4l2,i2c and usb devices
2031 * called when the device gets disconected or at module unload
2032*/
2033void cx231xx_release_analog_resources(struct cx231xx *dev)
2034{
2035
2036        /*FIXME: I2C IR should be disconnected */
2037
2038        if (dev->radio_dev) {
2039                if (video_is_registered(dev->radio_dev))
2040                        video_unregister_device(dev->radio_dev);
2041                else
2042                        video_device_release(dev->radio_dev);
2043                dev->radio_dev = NULL;
2044        }
2045        if (dev->vbi_dev) {
2046                cx231xx_info("V4L2 device %s deregistered\n",
2047                             video_device_node_name(dev->vbi_dev));
2048                if (video_is_registered(dev->vbi_dev))
2049                        video_unregister_device(dev->vbi_dev);
2050                else
2051                        video_device_release(dev->vbi_dev);
2052                dev->vbi_dev = NULL;
2053        }
2054        if (dev->vdev) {
2055                cx231xx_info("V4L2 device %s deregistered\n",
2056                             video_device_node_name(dev->vdev));
2057                if (video_is_registered(dev->vdev))
2058                        video_unregister_device(dev->vdev);
2059                else
2060                        video_device_release(dev->vdev);
2061                dev->vdev = NULL;
2062        }
2063}
2064
2065/*
2066 * cx231xx_v4l2_close()
2067 * stops streaming and deallocates all resources allocated by the v4l2
2068 * calls and ioctls
2069 */
2070static int cx231xx_v4l2_close(struct file *filp)
2071{
2072        struct cx231xx_fh *fh = filp->private_data;
2073        struct cx231xx *dev = fh->dev;
2074
2075        cx231xx_videodbg("users=%d\n", dev->users);
2076
2077        mutex_lock(&dev->lock);
2078
2079        if (res_check(fh))
2080                res_free(fh);
2081
2082        if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2083                videobuf_stop(&fh->vb_vidq);
2084                videobuf_mmap_free(&fh->vb_vidq);
2085
2086                /* the device is already disconnect,
2087                   free the remaining resources */
2088                if (dev->state & DEV_DISCONNECTED) {
2089                        cx231xx_release_resources(dev);
2090                        mutex_unlock(&dev->lock);
2091                        kfree(dev);
2092                        return 0;
2093                }
2094
2095                /* do this before setting alternate! */
2096                cx231xx_uninit_vbi_isoc(dev);
2097
2098                /* set alternate 0 */
2099                if (!dev->vbi_or_sliced_cc_mode)
2100                        cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2101                else
2102                        cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2103
2104                kfree(fh);
2105                dev->users--;
2106                wake_up_interruptible_nr(&dev->open, 1);
2107                mutex_unlock(&dev->lock);
2108                return 0;
2109        }
2110
2111        if (dev->users == 1) {
2112                videobuf_stop(&fh->vb_vidq);
2113                videobuf_mmap_free(&fh->vb_vidq);
2114
2115                /* the device is already disconnect,
2116                   free the remaining resources */
2117                if (dev->state & DEV_DISCONNECTED) {
2118                        cx231xx_release_resources(dev);
2119                        mutex_unlock(&dev->lock);
2120                        kfree(dev);
2121                        return 0;
2122                }
2123
2124                /* Save some power by putting tuner to sleep */
2125                call_all(dev, core, s_power, 0);
2126
2127                /* do this before setting alternate! */
2128                cx231xx_uninit_isoc(dev);
2129                cx231xx_set_mode(dev, CX231XX_SUSPEND);
2130
2131                /* set alternate 0 */
2132                cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2133        }
2134        kfree(fh);
2135        dev->users--;
2136        wake_up_interruptible_nr(&dev->open, 1);
2137        mutex_unlock(&dev->lock);
2138        return 0;
2139}
2140
2141/*
2142 * cx231xx_v4l2_read()
2143 * will allocate buffers when called for the first time
2144 */
2145static ssize_t
2146cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2147                  loff_t *pos)
2148{
2149        struct cx231xx_fh *fh = filp->private_data;
2150        struct cx231xx *dev = fh->dev;
2151        int rc;
2152
2153        rc = check_dev(dev);
2154        if (rc < 0)
2155                return rc;
2156
2157        if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2158            (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2159                mutex_lock(&dev->lock);
2160                rc = res_get(fh);
2161                mutex_unlock(&dev->lock);
2162
2163                if (unlikely(rc < 0))
2164                        return rc;
2165
2166                return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2167                                            filp->f_flags & O_NONBLOCK);
2168        }
2169        return 0;
2170}
2171
2172/*
2173 * cx231xx_v4l2_poll()
2174 * will allocate buffers when called for the first time
2175 */
2176static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2177{
2178        struct cx231xx_fh *fh = filp->private_data;
2179        struct cx231xx *dev = fh->dev;
2180        int rc;
2181
2182        rc = check_dev(dev);
2183        if (rc < 0)
2184                return rc;
2185
2186        mutex_lock(&dev->lock);
2187        rc = res_get(fh);
2188        mutex_unlock(&dev->lock);
2189
2190        if (unlikely(rc < 0))
2191                return POLLERR;
2192
2193        if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2194            (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2195                return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2196        else
2197                return POLLERR;
2198}
2199
2200/*
2201 * cx231xx_v4l2_mmap()
2202 */
2203static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2204{
2205        struct cx231xx_fh *fh = filp->private_data;
2206        struct cx231xx *dev = fh->dev;
2207        int rc;
2208
2209        rc = check_dev(dev);
2210        if (rc < 0)
2211                return rc;
2212
2213        mutex_lock(&dev->lock);
2214        rc = res_get(fh);
2215        mutex_unlock(&dev->lock);
2216
2217        if (unlikely(rc < 0))
2218                return rc;
2219
2220        rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2221
2222        cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2223                         (unsigned long)vma->vm_start,
2224                         (unsigned long)vma->vm_end -
2225                         (unsigned long)vma->vm_start, rc);
2226
2227        return rc;
2228}
2229
2230static const struct v4l2_file_operations cx231xx_v4l_fops = {
2231        .owner   = THIS_MODULE,
2232        .open    = cx231xx_v4l2_open,
2233        .release = cx231xx_v4l2_close,
2234        .read    = cx231xx_v4l2_read,
2235        .poll    = cx231xx_v4l2_poll,
2236        .mmap    = cx231xx_v4l2_mmap,
2237        .ioctl   = video_ioctl2,
2238};
2239
2240static const struct v4l2_ioctl_ops video_ioctl_ops = {
2241        .vidioc_querycap               = vidioc_querycap,
2242        .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2243        .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2244        .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2245        .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2246        .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2247        .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2248        .vidioc_s_fmt_vbi_cap          = vidioc_try_fmt_vbi_cap,
2249        .vidioc_g_audio                =  vidioc_g_audio,
2250        .vidioc_s_audio                = vidioc_s_audio,
2251        .vidioc_cropcap                = vidioc_cropcap,
2252        .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2253        .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2254        .vidioc_reqbufs                = vidioc_reqbufs,
2255        .vidioc_querybuf               = vidioc_querybuf,
2256        .vidioc_qbuf                   = vidioc_qbuf,
2257        .vidioc_dqbuf                  = vidioc_dqbuf,
2258        .vidioc_s_std                  = vidioc_s_std,
2259        .vidioc_g_std                  = vidioc_g_std,
2260        .vidioc_enum_input             = vidioc_enum_input,
2261        .vidioc_g_input                = vidioc_g_input,
2262        .vidioc_s_input                = vidioc_s_input,
2263        .vidioc_queryctrl              = vidioc_queryctrl,
2264        .vidioc_g_ctrl                 = vidioc_g_ctrl,
2265        .vidioc_s_ctrl                 = vidioc_s_ctrl,
2266        .vidioc_streamon               = vidioc_streamon,
2267        .vidioc_streamoff              = vidioc_streamoff,
2268        .vidioc_g_tuner                = vidioc_g_tuner,
2269        .vidioc_s_tuner                = vidioc_s_tuner,
2270        .vidioc_g_frequency            = vidioc_g_frequency,
2271        .vidioc_s_frequency            = vidioc_s_frequency,
2272#ifdef CONFIG_VIDEO_ADV_DEBUG
2273        .vidioc_g_register             = vidioc_g_register,
2274        .vidioc_s_register             = vidioc_s_register,
2275#endif
2276#ifdef CONFIG_VIDEO_V4L1_COMPAT
2277        .vidiocgmbuf                   = vidiocgmbuf,
2278#endif
2279};
2280
2281static struct video_device cx231xx_vbi_template;
2282
2283static const struct video_device cx231xx_video_template = {
2284        .fops         = &cx231xx_v4l_fops,
2285        .release      = video_device_release,
2286        .ioctl_ops    = &video_ioctl_ops,
2287        .tvnorms      = V4L2_STD_ALL,
2288        .current_norm = V4L2_STD_PAL,
2289};
2290
2291static const struct v4l2_file_operations radio_fops = {
2292        .owner   = THIS_MODULE,
2293        .open   = cx231xx_v4l2_open,
2294        .release = cx231xx_v4l2_close,
2295        .ioctl   = video_ioctl2,
2296};
2297
2298static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2299        .vidioc_querycap    = radio_querycap,
2300        .vidioc_g_tuner     = radio_g_tuner,
2301        .vidioc_enum_input  = radio_enum_input,
2302        .vidioc_g_audio     = radio_g_audio,
2303        .vidioc_s_tuner     = radio_s_tuner,
2304        .vidioc_s_audio     = radio_s_audio,
2305        .vidioc_s_input     = radio_s_input,
2306        .vidioc_queryctrl   = radio_queryctrl,
2307        .vidioc_g_ctrl      = vidioc_g_ctrl,
2308        .vidioc_s_ctrl      = vidioc_s_ctrl,
2309        .vidioc_g_frequency = vidioc_g_frequency,
2310        .vidioc_s_frequency = vidioc_s_frequency,
2311#ifdef CONFIG_VIDEO_ADV_DEBUG
2312        .vidioc_g_register  = vidioc_g_register,
2313        .vidioc_s_register  = vidioc_s_register,
2314#endif
2315};
2316
2317static struct video_device cx231xx_radio_template = {
2318        .name      = "cx231xx-radio",
2319        .fops      = &radio_fops,
2320        .ioctl_ops = &radio_ioctl_ops,
2321};
2322
2323/******************************** usb interface ******************************/
2324
2325static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2326                const struct video_device
2327                *template, const char *type_name)
2328{
2329        struct video_device *vfd;
2330
2331        vfd = video_device_alloc();
2332        if (NULL == vfd)
2333                return NULL;
2334
2335        *vfd = *template;
2336        vfd->v4l2_dev = &dev->v4l2_dev;
2337        vfd->release = video_device_release;
2338        vfd->debug = video_debug;
2339
2340        snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2341
2342        video_set_drvdata(vfd, dev);
2343        return vfd;
2344}
2345
2346int cx231xx_register_analog_devices(struct cx231xx *dev)
2347{
2348        int ret;
2349
2350        cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2351                     dev->name,
2352                     (CX231XX_VERSION_CODE >> 16) & 0xff,
2353                     (CX231XX_VERSION_CODE >> 8) & 0xff,
2354                     CX231XX_VERSION_CODE & 0xff);
2355
2356        /* set default norm */
2357        /*dev->norm = cx231xx_video_template.current_norm; */
2358        dev->width = norm_maxw(dev);
2359        dev->height = norm_maxh(dev);
2360        dev->interlaced = 0;
2361        dev->hscale = 0;
2362        dev->vscale = 0;
2363
2364        /* Analog specific initialization */
2365        dev->format = &format[0];
2366        /* video_mux(dev, dev->video_input); */
2367
2368        /* Audio defaults */
2369        dev->mute = 1;
2370        dev->volume = 0x1f;
2371
2372        /* enable vbi capturing */
2373        /* write code here...  */
2374
2375        /* allocate and fill video video_device struct */
2376        dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2377        if (!dev->vdev) {
2378                cx231xx_errdev("cannot allocate video_device.\n");
2379                return -ENODEV;
2380        }
2381
2382        /* register v4l2 video video_device */
2383        ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2384                                    video_nr[dev->devno]);
2385        if (ret) {
2386                cx231xx_errdev("unable to register video device (error=%i).\n",
2387                               ret);
2388                return ret;
2389        }
2390
2391        cx231xx_info("%s/0: registered device %s [v4l2]\n",
2392                     dev->name, video_device_node_name(dev->vdev));
2393
2394        /* Initialize VBI template */
2395        memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2396               sizeof(cx231xx_vbi_template));
2397        strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2398
2399        /* Allocate and fill vbi video_device struct */
2400        dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2401
2402        /* register v4l2 vbi video_device */
2403        ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2404                                    vbi_nr[dev->devno]);
2405        if (ret < 0) {
2406                cx231xx_errdev("unable to register vbi device\n");
2407                return ret;
2408        }
2409
2410        cx231xx_info("%s/0: registered device %s\n",
2411                     dev->name, video_device_node_name(dev->vbi_dev));
2412
2413        if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2414                dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2415                                                   "radio");
2416                if (!dev->radio_dev) {
2417                        cx231xx_errdev("cannot allocate video_device.\n");
2418                        return -ENODEV;
2419                }
2420                ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2421                                            radio_nr[dev->devno]);
2422                if (ret < 0) {
2423                        cx231xx_errdev("can't register radio device\n");
2424                        return ret;
2425                }
2426                cx231xx_info("Registered radio device as %s\n",
2427                             video_device_node_name(dev->radio_dev));
2428        }
2429
2430        cx231xx_info("V4L2 device registered as %s and %s\n",
2431                     video_device_node_name(dev->vdev),
2432                     video_device_node_name(dev->vbi_dev));
2433
2434        return 0;
2435}
2436