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 "cx231xx.h"
  26#include <linux/init.h>
  27#include <linux/list.h>
  28#include <linux/module.h>
  29#include <linux/kernel.h>
  30#include <linux/bitmap.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/drv-intf/msp3400.h>
  40#include <media/tuner.h>
  41
  42#include "dvb_frontend.h"
  43
  44#include "cx231xx-vbi.h"
  45
  46#define CX231XX_VERSION "0.0.3"
  47
  48#define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  49#define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  50
  51#define cx231xx_videodbg(fmt, arg...) do {\
  52        if (video_debug) \
  53                printk(KERN_INFO "%s %s :"fmt, \
  54                         dev->name, __func__ , ##arg); } while (0)
  55
  56static unsigned int isoc_debug;
  57module_param(isoc_debug, int, 0644);
  58MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  59
  60#define cx231xx_isocdbg(fmt, arg...) \
  61do {\
  62        if (isoc_debug) { \
  63                printk(KERN_INFO "%s %s :"fmt, \
  64                         dev->name, __func__ , ##arg); \
  65        } \
  66  } while (0)
  67
  68MODULE_AUTHOR(DRIVER_AUTHOR);
  69MODULE_DESCRIPTION(DRIVER_DESC);
  70MODULE_LICENSE("GPL");
  71MODULE_VERSION(CX231XX_VERSION);
  72
  73static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  74static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  75static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  76static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  77
  78module_param_array(card, int, NULL, 0444);
  79module_param_array(video_nr, int, NULL, 0444);
  80module_param_array(vbi_nr, int, NULL, 0444);
  81module_param_array(radio_nr, int, NULL, 0444);
  82
  83MODULE_PARM_DESC(card, "card type");
  84MODULE_PARM_DESC(video_nr, "video device numbers");
  85MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  86MODULE_PARM_DESC(radio_nr, "radio device numbers");
  87
  88static unsigned int video_debug;
  89module_param(video_debug, int, 0644);
  90MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  91
  92/* supported video standards */
  93static struct cx231xx_fmt format[] = {
  94        {
  95         .name = "16bpp YUY2, 4:2:2, packed",
  96         .fourcc = V4L2_PIX_FMT_YUYV,
  97         .depth = 16,
  98         .reg = 0,
  99         },
 100};
 101
 102
 103static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
 104{
 105#ifdef CONFIG_MEDIA_CONTROLLER
 106        struct media_device *mdev = dev->media_dev;
 107        struct media_entity  *entity, *decoder = NULL, *source;
 108        struct media_link *link, *found_link = NULL;
 109        int ret, active_links = 0;
 110
 111        if (!mdev)
 112                return 0;
 113
 114        /*
 115         * This will find the tuner that is connected into the decoder.
 116         * Technically, this is not 100% correct, as the device may be
 117         * using an analog input instead of the tuner. However, as we can't
 118         * do DVB streaming while the DMA engine is being used for V4L2,
 119         * this should be enough for the actual needs.
 120         */
 121        media_device_for_each_entity(entity, mdev) {
 122                if (entity->function == MEDIA_ENT_F_ATV_DECODER) {
 123                        decoder = entity;
 124                        break;
 125                }
 126        }
 127        if (!decoder)
 128                return 0;
 129
 130        list_for_each_entry(link, &decoder->links, list) {
 131                if (link->sink->entity == decoder) {
 132                        found_link = link;
 133                        if (link->flags & MEDIA_LNK_FL_ENABLED)
 134                                active_links++;
 135                        break;
 136                }
 137        }
 138
 139        if (active_links == 1 || !found_link)
 140                return 0;
 141
 142        source = found_link->source->entity;
 143        list_for_each_entry(link, &source->links, list) {
 144                struct media_entity *sink;
 145                int flags = 0;
 146
 147                sink = link->sink->entity;
 148
 149                if (sink == entity)
 150                        flags = MEDIA_LNK_FL_ENABLED;
 151
 152                ret = media_entity_setup_link(link, flags);
 153                if (ret) {
 154                        dev_err(dev->dev,
 155                                "Couldn't change link %s->%s to %s. Error %d\n",
 156                                source->name, sink->name,
 157                                flags ? "enabled" : "disabled",
 158                                ret);
 159                        return ret;
 160                } else
 161                        dev_dbg(dev->dev,
 162                                "link %s->%s was %s\n",
 163                                source->name, sink->name,
 164                                flags ? "ENABLED" : "disabled");
 165        }
 166#endif
 167        return 0;
 168}
 169
 170/* ------------------------------------------------------------------
 171        Video buffer and parser functions
 172   ------------------------------------------------------------------*/
 173
 174/*
 175 * Announces that a buffer were filled and request the next
 176 */
 177static inline void buffer_filled(struct cx231xx *dev,
 178                                 struct cx231xx_dmaqueue *dma_q,
 179                                 struct cx231xx_buffer *buf)
 180{
 181        /* Advice that buffer was filled */
 182        cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 183        buf->vb.state = VIDEOBUF_DONE;
 184        buf->vb.field_count++;
 185        v4l2_get_timestamp(&buf->vb.ts);
 186
 187        if (dev->USE_ISO)
 188                dev->video_mode.isoc_ctl.buf = NULL;
 189        else
 190                dev->video_mode.bulk_ctl.buf = NULL;
 191
 192        list_del(&buf->vb.queue);
 193        wake_up(&buf->vb.done);
 194}
 195
 196static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 197{
 198        char *errmsg = "Unknown";
 199
 200        switch (status) {
 201        case -ENOENT:
 202                errmsg = "unlinked synchronuously";
 203                break;
 204        case -ECONNRESET:
 205                errmsg = "unlinked asynchronuously";
 206                break;
 207        case -ENOSR:
 208                errmsg = "Buffer error (overrun)";
 209                break;
 210        case -EPIPE:
 211                errmsg = "Stalled (device not responding)";
 212                break;
 213        case -EOVERFLOW:
 214                errmsg = "Babble (bad cable?)";
 215                break;
 216        case -EPROTO:
 217                errmsg = "Bit-stuff error (bad cable?)";
 218                break;
 219        case -EILSEQ:
 220                errmsg = "CRC/Timeout (could be anything)";
 221                break;
 222        case -ETIME:
 223                errmsg = "Device does not respond";
 224                break;
 225        }
 226        if (packet < 0) {
 227                cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 228        } else {
 229                cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 230                                packet, status, errmsg);
 231        }
 232}
 233
 234/*
 235 * video-buf generic routine to get the next available buffer
 236 */
 237static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 238                                struct cx231xx_buffer **buf)
 239{
 240        struct cx231xx_video_mode *vmode =
 241            container_of(dma_q, struct cx231xx_video_mode, vidq);
 242        struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 243
 244        char *outp;
 245
 246        if (list_empty(&dma_q->active)) {
 247                cx231xx_isocdbg("No active queue to serve\n");
 248                if (dev->USE_ISO)
 249                        dev->video_mode.isoc_ctl.buf = NULL;
 250                else
 251                        dev->video_mode.bulk_ctl.buf = NULL;
 252                *buf = NULL;
 253                return;
 254        }
 255
 256        /* Get the next buffer */
 257        *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 258
 259        /* Cleans up buffer - Useful for testing for frame/URB loss */
 260        outp = videobuf_to_vmalloc(&(*buf)->vb);
 261        memset(outp, 0, (*buf)->vb.size);
 262
 263        if (dev->USE_ISO)
 264                dev->video_mode.isoc_ctl.buf = *buf;
 265        else
 266                dev->video_mode.bulk_ctl.buf = *buf;
 267
 268        return;
 269}
 270
 271/*
 272 * Controls the isoc copy of each urb packet
 273 */
 274static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 275{
 276        struct cx231xx_dmaqueue *dma_q = urb->context;
 277        int i;
 278        unsigned char *p_buffer;
 279        u32 bytes_parsed = 0, buffer_size = 0;
 280        u8 sav_eav = 0;
 281
 282        if (!dev)
 283                return 0;
 284
 285        if (dev->state & DEV_DISCONNECTED)
 286                return 0;
 287
 288        if (urb->status < 0) {
 289                print_err_status(dev, -1, urb->status);
 290                if (urb->status == -ENOENT)
 291                        return 0;
 292        }
 293
 294        for (i = 0; i < urb->number_of_packets; i++) {
 295                int status = urb->iso_frame_desc[i].status;
 296
 297                if (status < 0) {
 298                        print_err_status(dev, i, status);
 299                        if (urb->iso_frame_desc[i].status != -EPROTO)
 300                                continue;
 301                }
 302
 303                if (urb->iso_frame_desc[i].actual_length <= 0) {
 304                        /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 305                        continue;
 306                }
 307                if (urb->iso_frame_desc[i].actual_length >
 308                    dev->video_mode.max_pkt_size) {
 309                        cx231xx_isocdbg("packet bigger than packet size");
 310                        continue;
 311                }
 312
 313                /*  get buffer pointer and length */
 314                p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 315                buffer_size = urb->iso_frame_desc[i].actual_length;
 316                bytes_parsed = 0;
 317
 318                if (dma_q->is_partial_line) {
 319                        /* Handle the case of a partial line */
 320                        sav_eav = dma_q->last_sav;
 321                } else {
 322                        /* Check for a SAV/EAV overlapping
 323                                the buffer boundary */
 324                        sav_eav =
 325                            cx231xx_find_boundary_SAV_EAV(p_buffer,
 326                                                          dma_q->partial_buf,
 327                                                          &bytes_parsed);
 328                }
 329
 330                sav_eav &= 0xF0;
 331                /* Get the first line if we have some portion of an SAV/EAV from
 332                   the last buffer or a partial line  */
 333                if (sav_eav) {
 334                        bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 335                                sav_eav,        /* SAV/EAV */
 336                                p_buffer + bytes_parsed,        /* p_buffer */
 337                                buffer_size - bytes_parsed);/* buf size */
 338                }
 339
 340                /* Now parse data that is completely in this buffer */
 341                /* dma_q->is_partial_line = 0;  */
 342
 343                while (bytes_parsed < buffer_size) {
 344                        u32 bytes_used = 0;
 345
 346                        sav_eav = cx231xx_find_next_SAV_EAV(
 347                                p_buffer + bytes_parsed,        /* p_buffer */
 348                                buffer_size - bytes_parsed,     /* buf size */
 349                                &bytes_used);/* bytes used to get SAV/EAV */
 350
 351                        bytes_parsed += bytes_used;
 352
 353                        sav_eav &= 0xF0;
 354                        if (sav_eav && (bytes_parsed < buffer_size)) {
 355                                bytes_parsed += cx231xx_get_video_line(dev,
 356                                        dma_q, sav_eav, /* SAV/EAV */
 357                                        p_buffer + bytes_parsed,/* p_buffer */
 358                                        buffer_size - bytes_parsed);/*buf size*/
 359                        }
 360                }
 361
 362                /* Save the last four bytes of the buffer so we can check the
 363                   buffer boundary condition next time */
 364                memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 365                bytes_parsed = 0;
 366
 367        }
 368        return 1;
 369}
 370
 371static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 372{
 373        struct cx231xx_dmaqueue *dma_q = urb->context;
 374        unsigned char *p_buffer;
 375        u32 bytes_parsed = 0, buffer_size = 0;
 376        u8 sav_eav = 0;
 377
 378        if (!dev)
 379                return 0;
 380
 381        if (dev->state & DEV_DISCONNECTED)
 382                return 0;
 383
 384        if (urb->status < 0) {
 385                print_err_status(dev, -1, urb->status);
 386                if (urb->status == -ENOENT)
 387                        return 0;
 388        }
 389
 390        if (1) {
 391
 392                /*  get buffer pointer and length */
 393                p_buffer = urb->transfer_buffer;
 394                buffer_size = urb->actual_length;
 395                bytes_parsed = 0;
 396
 397                if (dma_q->is_partial_line) {
 398                        /* Handle the case of a partial line */
 399                        sav_eav = dma_q->last_sav;
 400                } else {
 401                        /* Check for a SAV/EAV overlapping
 402                                the buffer boundary */
 403                        sav_eav =
 404                            cx231xx_find_boundary_SAV_EAV(p_buffer,
 405                                                          dma_q->partial_buf,
 406                                                          &bytes_parsed);
 407                }
 408
 409                sav_eav &= 0xF0;
 410                /* Get the first line if we have some portion of an SAV/EAV from
 411                   the last buffer or a partial line  */
 412                if (sav_eav) {
 413                        bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 414                                sav_eav,        /* SAV/EAV */
 415                                p_buffer + bytes_parsed,        /* p_buffer */
 416                                buffer_size - bytes_parsed);/* buf size */
 417                }
 418
 419                /* Now parse data that is completely in this buffer */
 420                /* dma_q->is_partial_line = 0;  */
 421
 422                while (bytes_parsed < buffer_size) {
 423                        u32 bytes_used = 0;
 424
 425                        sav_eav = cx231xx_find_next_SAV_EAV(
 426                                p_buffer + bytes_parsed,        /* p_buffer */
 427                                buffer_size - bytes_parsed,     /* buf size */
 428                                &bytes_used);/* bytes used to get SAV/EAV */
 429
 430                        bytes_parsed += bytes_used;
 431
 432                        sav_eav &= 0xF0;
 433                        if (sav_eav && (bytes_parsed < buffer_size)) {
 434                                bytes_parsed += cx231xx_get_video_line(dev,
 435                                        dma_q, sav_eav, /* SAV/EAV */
 436                                        p_buffer + bytes_parsed,/* p_buffer */
 437                                        buffer_size - bytes_parsed);/*buf size*/
 438                        }
 439                }
 440
 441                /* Save the last four bytes of the buffer so we can check the
 442                   buffer boundary condition next time */
 443                memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 444                bytes_parsed = 0;
 445
 446        }
 447        return 1;
 448}
 449
 450
 451u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 452                                 u32 *p_bytes_used)
 453{
 454        u32 bytes_used;
 455        u8 boundary_bytes[8];
 456        u8 sav_eav = 0;
 457
 458        *p_bytes_used = 0;
 459
 460        /* Create an array of the last 4 bytes of the last buffer and the first
 461           4 bytes of the current buffer. */
 462
 463        memcpy(boundary_bytes, partial_buf, 4);
 464        memcpy(boundary_bytes + 4, p_buffer, 4);
 465
 466        /* Check for the SAV/EAV in the boundary buffer */
 467        sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 468                                            &bytes_used);
 469
 470        if (sav_eav) {
 471                /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 472                   only those used in the new buffer */
 473                *p_bytes_used = bytes_used - 4;
 474        }
 475
 476        return sav_eav;
 477}
 478
 479u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 480{
 481        u32 i;
 482        u8 sav_eav = 0;
 483
 484        /*
 485         * Don't search if the buffer size is less than 4.  It causes a page
 486         * fault since buffer_size - 4 evaluates to a large number in that
 487         * case.
 488         */
 489        if (buffer_size < 4) {
 490                *p_bytes_used = buffer_size;
 491                return 0;
 492        }
 493
 494        for (i = 0; i < (buffer_size - 3); i++) {
 495
 496                if ((p_buffer[i] == 0xFF) &&
 497                    (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 498
 499                        *p_bytes_used = i + 4;
 500                        sav_eav = p_buffer[i + 3];
 501                        return sav_eav;
 502                }
 503        }
 504
 505        *p_bytes_used = buffer_size;
 506        return 0;
 507}
 508
 509u32 cx231xx_get_video_line(struct cx231xx *dev,
 510                           struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 511                           u8 *p_buffer, u32 buffer_size)
 512{
 513        u32 bytes_copied = 0;
 514        int current_field = -1;
 515
 516        switch (sav_eav) {
 517        case SAV_ACTIVE_VIDEO_FIELD1:
 518                /* looking for skipped line which occurred in PAL 720x480 mode.
 519                   In this case, there will be no active data contained
 520                   between the SAV and EAV */
 521                if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 522                    (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 523                    ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 524                     (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 525                     (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 526                     (p_buffer[3] == EAV_VBLANK_FIELD2)))
 527                        return bytes_copied;
 528                current_field = 1;
 529                break;
 530
 531        case SAV_ACTIVE_VIDEO_FIELD2:
 532                /* looking for skipped line which occurred in PAL 720x480 mode.
 533                   In this case, there will be no active data contained between
 534                   the SAV and EAV */
 535                if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 536                    (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 537                    ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 538                     (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 539                     (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 540                     (p_buffer[3] == EAV_VBLANK_FIELD2)))
 541                        return bytes_copied;
 542                current_field = 2;
 543                break;
 544        }
 545
 546        dma_q->last_sav = sav_eav;
 547
 548        bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 549                                               buffer_size, current_field);
 550
 551        return bytes_copied;
 552}
 553
 554u32 cx231xx_copy_video_line(struct cx231xx *dev,
 555                            struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 556                            u32 length, int field_number)
 557{
 558        u32 bytes_to_copy;
 559        struct cx231xx_buffer *buf;
 560        u32 _line_size = dev->width * 2;
 561
 562        if (dma_q->current_field != field_number)
 563                cx231xx_reset_video_buffer(dev, dma_q);
 564
 565        /* get the buffer pointer */
 566        if (dev->USE_ISO)
 567                buf = dev->video_mode.isoc_ctl.buf;
 568        else
 569                buf = dev->video_mode.bulk_ctl.buf;
 570
 571        /* Remember the field number for next time */
 572        dma_q->current_field = field_number;
 573
 574        bytes_to_copy = dma_q->bytes_left_in_line;
 575        if (bytes_to_copy > length)
 576                bytes_to_copy = length;
 577
 578        if (dma_q->lines_completed >= dma_q->lines_per_field) {
 579                dma_q->bytes_left_in_line -= bytes_to_copy;
 580                dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 581                                          0 : 1;
 582                return 0;
 583        }
 584
 585        dma_q->is_partial_line = 1;
 586
 587        /* If we don't have a buffer, just return the number of bytes we would
 588           have copied if we had a buffer. */
 589        if (!buf) {
 590                dma_q->bytes_left_in_line -= bytes_to_copy;
 591                dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 592                                         ? 0 : 1;
 593                return bytes_to_copy;
 594        }
 595
 596        /* copy the data to video buffer */
 597        cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 598
 599        dma_q->pos += bytes_to_copy;
 600        dma_q->bytes_left_in_line -= bytes_to_copy;
 601
 602        if (dma_q->bytes_left_in_line == 0) {
 603                dma_q->bytes_left_in_line = _line_size;
 604                dma_q->lines_completed++;
 605                dma_q->is_partial_line = 0;
 606
 607                if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 608                        buffer_filled(dev, dma_q, buf);
 609
 610                        dma_q->pos = 0;
 611                        buf = NULL;
 612                        dma_q->lines_completed = 0;
 613                }
 614        }
 615
 616        return bytes_to_copy;
 617}
 618
 619void cx231xx_reset_video_buffer(struct cx231xx *dev,
 620                                struct cx231xx_dmaqueue *dma_q)
 621{
 622        struct cx231xx_buffer *buf;
 623
 624        /* handle the switch from field 1 to field 2 */
 625        if (dma_q->current_field == 1) {
 626                if (dma_q->lines_completed >= dma_q->lines_per_field)
 627                        dma_q->field1_done = 1;
 628                else
 629                        dma_q->field1_done = 0;
 630        }
 631
 632        if (dev->USE_ISO)
 633                buf = dev->video_mode.isoc_ctl.buf;
 634        else
 635                buf = dev->video_mode.bulk_ctl.buf;
 636
 637        if (buf == NULL) {
 638                /* first try to get the buffer */
 639                get_next_buf(dma_q, &buf);
 640
 641                dma_q->pos = 0;
 642                dma_q->field1_done = 0;
 643                dma_q->current_field = -1;
 644        }
 645
 646        /* reset the counters */
 647        dma_q->bytes_left_in_line = dev->width << 1;
 648        dma_q->lines_completed = 0;
 649}
 650
 651int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 652                    u8 *p_buffer, u32 bytes_to_copy)
 653{
 654        u8 *p_out_buffer = NULL;
 655        u32 current_line_bytes_copied = 0;
 656        struct cx231xx_buffer *buf;
 657        u32 _line_size = dev->width << 1;
 658        void *startwrite;
 659        int offset, lencopy;
 660
 661        if (dev->USE_ISO)
 662                buf = dev->video_mode.isoc_ctl.buf;
 663        else
 664                buf = dev->video_mode.bulk_ctl.buf;
 665
 666        if (buf == NULL)
 667                return -1;
 668
 669        p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 670
 671        current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 672
 673        /* Offset field 2 one line from the top of the buffer */
 674        offset = (dma_q->current_field == 1) ? 0 : _line_size;
 675
 676        /* Offset for field 2 */
 677        startwrite = p_out_buffer + offset;
 678
 679        /* lines already completed in the current field */
 680        startwrite += (dma_q->lines_completed * _line_size * 2);
 681
 682        /* bytes already completed in the current line */
 683        startwrite += current_line_bytes_copied;
 684
 685        lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 686                  bytes_to_copy : dma_q->bytes_left_in_line;
 687
 688        if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 689                return 0;
 690
 691        /* The below copies the UYVY data straight into video buffer */
 692        cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 693
 694        return 0;
 695}
 696
 697void cx231xx_swab(u16 *from, u16 *to, u16 len)
 698{
 699        u16 i;
 700
 701        if (len <= 0)
 702                return;
 703
 704        for (i = 0; i < len / 2; i++)
 705                to[i] = (from[i] << 8) | (from[i] >> 8);
 706}
 707
 708u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 709{
 710        u8 buffer_complete = 0;
 711
 712        /* Dual field stream */
 713        buffer_complete = ((dma_q->current_field == 2) &&
 714                           (dma_q->lines_completed >= dma_q->lines_per_field) &&
 715                            dma_q->field1_done);
 716
 717        return buffer_complete;
 718}
 719
 720/* ------------------------------------------------------------------
 721        Videobuf operations
 722   ------------------------------------------------------------------*/
 723
 724static int
 725buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 726{
 727        struct cx231xx_fh *fh = vq->priv_data;
 728        struct cx231xx *dev = fh->dev;
 729
 730        *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 731        if (0 == *count)
 732                *count = CX231XX_DEF_BUF;
 733
 734        if (*count < CX231XX_MIN_BUF)
 735                *count = CX231XX_MIN_BUF;
 736
 737
 738        cx231xx_enable_analog_tuner(dev);
 739
 740        return 0;
 741}
 742
 743/* This is called *without* dev->slock held; please keep it that way */
 744static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 745{
 746        struct cx231xx_fh *fh = vq->priv_data;
 747        struct cx231xx *dev = fh->dev;
 748        unsigned long flags = 0;
 749
 750        BUG_ON(in_interrupt());
 751
 752        /* We used to wait for the buffer to finish here, but this didn't work
 753           because, as we were keeping the state as VIDEOBUF_QUEUED,
 754           videobuf_queue_cancel marked it as finished for us.
 755           (Also, it could wedge forever if the hardware was misconfigured.)
 756
 757           This should be safe; by the time we get here, the buffer isn't
 758           queued anymore. If we ever start marking the buffers as
 759           VIDEOBUF_ACTIVE, it won't be, though.
 760         */
 761        spin_lock_irqsave(&dev->video_mode.slock, flags);
 762        if (dev->USE_ISO) {
 763                if (dev->video_mode.isoc_ctl.buf == buf)
 764                        dev->video_mode.isoc_ctl.buf = NULL;
 765        } else {
 766                if (dev->video_mode.bulk_ctl.buf == buf)
 767                        dev->video_mode.bulk_ctl.buf = NULL;
 768        }
 769        spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 770
 771        videobuf_vmalloc_free(&buf->vb);
 772        buf->vb.state = VIDEOBUF_NEEDS_INIT;
 773}
 774
 775static int
 776buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 777               enum v4l2_field field)
 778{
 779        struct cx231xx_fh *fh = vq->priv_data;
 780        struct cx231xx_buffer *buf =
 781            container_of(vb, struct cx231xx_buffer, vb);
 782        struct cx231xx *dev = fh->dev;
 783        int rc = 0, urb_init = 0;
 784
 785        /* The only currently supported format is 16 bits/pixel */
 786        buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 787                        + 7) >> 3;
 788        if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 789                return -EINVAL;
 790
 791        buf->vb.width = dev->width;
 792        buf->vb.height = dev->height;
 793        buf->vb.field = field;
 794
 795        if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 796                rc = videobuf_iolock(vq, &buf->vb, NULL);
 797                if (rc < 0)
 798                        goto fail;
 799        }
 800
 801        if (dev->USE_ISO) {
 802                if (!dev->video_mode.isoc_ctl.num_bufs)
 803                        urb_init = 1;
 804        } else {
 805                if (!dev->video_mode.bulk_ctl.num_bufs)
 806                        urb_init = 1;
 807        }
 808        dev_dbg(dev->dev,
 809                "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 810                urb_init, dev->video_mode.max_pkt_size);
 811        if (urb_init) {
 812                dev->mode_tv = 0;
 813                if (dev->USE_ISO)
 814                        rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 815                                       CX231XX_NUM_BUFS,
 816                                       dev->video_mode.max_pkt_size,
 817                                       cx231xx_isoc_copy);
 818                else
 819                        rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 820                                       CX231XX_NUM_BUFS,
 821                                       dev->video_mode.max_pkt_size,
 822                                       cx231xx_bulk_copy);
 823                if (rc < 0)
 824                        goto fail;
 825        }
 826
 827        buf->vb.state = VIDEOBUF_PREPARED;
 828
 829        return 0;
 830
 831fail:
 832        free_buffer(vq, buf);
 833        return rc;
 834}
 835
 836static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 837{
 838        struct cx231xx_buffer *buf =
 839            container_of(vb, struct cx231xx_buffer, vb);
 840        struct cx231xx_fh *fh = vq->priv_data;
 841        struct cx231xx *dev = fh->dev;
 842        struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 843
 844        buf->vb.state = VIDEOBUF_QUEUED;
 845        list_add_tail(&buf->vb.queue, &vidq->active);
 846
 847}
 848
 849static void buffer_release(struct videobuf_queue *vq,
 850                           struct videobuf_buffer *vb)
 851{
 852        struct cx231xx_buffer *buf =
 853            container_of(vb, struct cx231xx_buffer, vb);
 854        struct cx231xx_fh *fh = vq->priv_data;
 855        struct cx231xx *dev = (struct cx231xx *)fh->dev;
 856
 857        cx231xx_isocdbg("cx231xx: called buffer_release\n");
 858
 859        free_buffer(vq, buf);
 860}
 861
 862static const struct videobuf_queue_ops cx231xx_video_qops = {
 863        .buf_setup = buffer_setup,
 864        .buf_prepare = buffer_prepare,
 865        .buf_queue = buffer_queue,
 866        .buf_release = buffer_release,
 867};
 868
 869/*********************  v4l2 interface  **************************************/
 870
 871void video_mux(struct cx231xx *dev, int index)
 872{
 873        dev->video_input = index;
 874        dev->ctl_ainput = INPUT(index)->amux;
 875
 876        cx231xx_set_video_input_mux(dev, index);
 877
 878        cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 879
 880        cx231xx_set_audio_input(dev, dev->ctl_ainput);
 881
 882        dev_dbg(dev->dev, "video_mux : %d\n", index);
 883
 884        /* do mode control overrides if required */
 885        cx231xx_do_mode_ctrl_overrides(dev);
 886}
 887
 888/* Usage lock check functions */
 889static int res_get(struct cx231xx_fh *fh)
 890{
 891        struct cx231xx *dev = fh->dev;
 892        int rc = 0;
 893
 894        /* This instance already has stream_on */
 895        if (fh->stream_on)
 896                return rc;
 897
 898        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 899                if (dev->stream_on)
 900                        return -EBUSY;
 901                dev->stream_on = 1;
 902        } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 903                if (dev->vbi_stream_on)
 904                        return -EBUSY;
 905                dev->vbi_stream_on = 1;
 906        } else
 907                return -EINVAL;
 908
 909        fh->stream_on = 1;
 910
 911        return rc;
 912}
 913
 914static int res_check(struct cx231xx_fh *fh)
 915{
 916        return fh->stream_on;
 917}
 918
 919static void res_free(struct cx231xx_fh *fh)
 920{
 921        struct cx231xx *dev = fh->dev;
 922
 923        fh->stream_on = 0;
 924
 925        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 926                dev->stream_on = 0;
 927        if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 928                dev->vbi_stream_on = 0;
 929}
 930
 931static int check_dev(struct cx231xx *dev)
 932{
 933        if (dev->state & DEV_DISCONNECTED) {
 934                dev_err(dev->dev, "v4l2 ioctl: device not present\n");
 935                return -ENODEV;
 936        }
 937        return 0;
 938}
 939
 940/* ------------------------------------------------------------------
 941        IOCTL vidioc handling
 942   ------------------------------------------------------------------*/
 943
 944static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 945                                struct v4l2_format *f)
 946{
 947        struct cx231xx_fh *fh = priv;
 948        struct cx231xx *dev = fh->dev;
 949
 950        f->fmt.pix.width = dev->width;
 951        f->fmt.pix.height = dev->height;
 952        f->fmt.pix.pixelformat = dev->format->fourcc;
 953        f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 954        f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 955        f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 956
 957        f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 958
 959        return 0;
 960}
 961
 962static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 963{
 964        unsigned int i;
 965
 966        for (i = 0; i < ARRAY_SIZE(format); i++)
 967                if (format[i].fourcc == fourcc)
 968                        return &format[i];
 969
 970        return NULL;
 971}
 972
 973static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 974                                  struct v4l2_format *f)
 975{
 976        struct cx231xx_fh *fh = priv;
 977        struct cx231xx *dev = fh->dev;
 978        unsigned int width = f->fmt.pix.width;
 979        unsigned int height = f->fmt.pix.height;
 980        unsigned int maxw = norm_maxw(dev);
 981        unsigned int maxh = norm_maxh(dev);
 982        struct cx231xx_fmt *fmt;
 983
 984        fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 985        if (!fmt) {
 986                cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 987                                 f->fmt.pix.pixelformat);
 988                return -EINVAL;
 989        }
 990
 991        /* width must even because of the YUYV format
 992           height must be even because of interlacing */
 993        v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 994
 995        f->fmt.pix.width = width;
 996        f->fmt.pix.height = height;
 997        f->fmt.pix.pixelformat = fmt->fourcc;
 998        f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
 999        f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1000        f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1001        f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1002
1003        return 0;
1004}
1005
1006static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1007                                struct v4l2_format *f)
1008{
1009        struct cx231xx_fh *fh = priv;
1010        struct cx231xx *dev = fh->dev;
1011        int rc;
1012        struct cx231xx_fmt *fmt;
1013        struct v4l2_subdev_format format = {
1014                .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1015        };
1016
1017        rc = check_dev(dev);
1018        if (rc < 0)
1019                return rc;
1020
1021        vidioc_try_fmt_vid_cap(file, priv, f);
1022
1023        fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1024        if (!fmt)
1025                return -EINVAL;
1026
1027        if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1028                dev_err(dev->dev, "%s: queue busy\n", __func__);
1029                return -EBUSY;
1030        }
1031
1032        if (dev->stream_on && !fh->stream_on) {
1033                dev_err(dev->dev,
1034                        "%s: device in use by another fh\n", __func__);
1035                return -EBUSY;
1036        }
1037
1038        /* set new image size */
1039        dev->width = f->fmt.pix.width;
1040        dev->height = f->fmt.pix.height;
1041        dev->format = fmt;
1042
1043        v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
1044        call_all(dev, pad, set_fmt, NULL, &format);
1045        v4l2_fill_pix_format(&f->fmt.pix, &format.format);
1046
1047        return rc;
1048}
1049
1050static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
1051{
1052        struct cx231xx_fh *fh = priv;
1053        struct cx231xx *dev = fh->dev;
1054
1055        *id = dev->norm;
1056        return 0;
1057}
1058
1059static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1060{
1061        struct cx231xx_fh *fh = priv;
1062        struct cx231xx *dev = fh->dev;
1063        struct v4l2_subdev_format format = {
1064                .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1065        };
1066        int rc;
1067
1068        rc = check_dev(dev);
1069        if (rc < 0)
1070                return rc;
1071
1072        if (dev->norm == norm)
1073                return 0;
1074
1075        if (videobuf_queue_is_busy(&fh->vb_vidq))
1076                return -EBUSY;
1077
1078        dev->norm = norm;
1079
1080        /* Adjusts width/height, if needed */
1081        dev->width = 720;
1082        dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1083
1084        call_all(dev, video, s_std, dev->norm);
1085
1086        /* We need to reset basic properties in the decoder related to
1087           resolution (since a standard change effects things like the number
1088           of lines in VACT, etc) */
1089        format.format.code = MEDIA_BUS_FMT_FIXED;
1090        format.format.width = dev->width;
1091        format.format.height = dev->height;
1092        call_all(dev, pad, set_fmt, NULL, &format);
1093
1094        /* do mode control overrides */
1095        cx231xx_do_mode_ctrl_overrides(dev);
1096
1097        return 0;
1098}
1099
1100static const char *iname[] = {
1101        [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1102        [CX231XX_VMUX_SVIDEO]     = "S-Video",
1103        [CX231XX_VMUX_TELEVISION] = "Television",
1104        [CX231XX_VMUX_CABLE]      = "Cable TV",
1105        [CX231XX_VMUX_DVB]        = "DVB",
1106};
1107
1108void cx231xx_v4l2_create_entities(struct cx231xx *dev)
1109{
1110#if defined(CONFIG_MEDIA_CONTROLLER)
1111        int ret, i;
1112
1113        /* Create entities for each input connector */
1114        for (i = 0; i < MAX_CX231XX_INPUT; i++) {
1115                struct media_entity *ent = &dev->input_ent[i];
1116
1117                if (!INPUT(i)->type)
1118                        break;
1119
1120                ent->name = iname[INPUT(i)->type];
1121                ent->flags = MEDIA_ENT_FL_CONNECTOR;
1122                dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1123
1124                switch (INPUT(i)->type) {
1125                case CX231XX_VMUX_COMPOSITE1:
1126                        ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1127                        break;
1128                case CX231XX_VMUX_SVIDEO:
1129                        ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1130                        break;
1131                case CX231XX_VMUX_TELEVISION:
1132                case CX231XX_VMUX_CABLE:
1133                case CX231XX_VMUX_DVB:
1134                        /* The DVB core will handle it */
1135                        if (dev->tuner_type == TUNER_ABSENT)
1136                                continue;
1137                        /* fall through */
1138                default: /* just to shut up a gcc warning */
1139                        ent->function = MEDIA_ENT_F_CONN_RF;
1140                        break;
1141                }
1142
1143                ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1144                if (ret < 0)
1145                        pr_err("failed to initialize input pad[%d]!\n", i);
1146
1147                ret = media_device_register_entity(dev->media_dev, ent);
1148                if (ret < 0)
1149                        pr_err("failed to register input entity %d!\n", i);
1150        }
1151#endif
1152}
1153
1154int cx231xx_enum_input(struct file *file, void *priv,
1155                             struct v4l2_input *i)
1156{
1157        struct cx231xx_fh *fh = priv;
1158        struct cx231xx *dev = fh->dev;
1159        u32 gen_stat;
1160        unsigned int n;
1161        int ret;
1162
1163        n = i->index;
1164        if (n >= MAX_CX231XX_INPUT)
1165                return -EINVAL;
1166        if (0 == INPUT(n)->type)
1167                return -EINVAL;
1168
1169        i->index = n;
1170        i->type = V4L2_INPUT_TYPE_CAMERA;
1171
1172        strcpy(i->name, iname[INPUT(n)->type]);
1173
1174        if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1175            (CX231XX_VMUX_CABLE == INPUT(n)->type))
1176                i->type = V4L2_INPUT_TYPE_TUNER;
1177
1178        i->std = dev->vdev.tvnorms;
1179
1180        /* If they are asking about the active input, read signal status */
1181        if (n == dev->video_input) {
1182                ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1183                                            GEN_STAT, 2, &gen_stat, 4);
1184                if (ret > 0) {
1185                        if ((gen_stat & FLD_VPRES) == 0x00)
1186                                i->status |= V4L2_IN_ST_NO_SIGNAL;
1187                        if ((gen_stat & FLD_HLOCK) == 0x00)
1188                                i->status |= V4L2_IN_ST_NO_H_LOCK;
1189                }
1190        }
1191
1192        return 0;
1193}
1194
1195int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1196{
1197        struct cx231xx_fh *fh = priv;
1198        struct cx231xx *dev = fh->dev;
1199
1200        *i = dev->video_input;
1201
1202        return 0;
1203}
1204
1205int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1206{
1207        struct cx231xx_fh *fh = priv;
1208        struct cx231xx *dev = fh->dev;
1209        int rc;
1210
1211        dev->mode_tv = 0;
1212        rc = check_dev(dev);
1213        if (rc < 0)
1214                return rc;
1215
1216        if (i >= MAX_CX231XX_INPUT)
1217                return -EINVAL;
1218        if (0 == INPUT(i)->type)
1219                return -EINVAL;
1220
1221        video_mux(dev, i);
1222
1223        if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1224            INPUT(i)->type == CX231XX_VMUX_CABLE) {
1225                /* There's a tuner, so reset the standard and put it on the
1226                   last known frequency (since it was probably powered down
1227                   until now */
1228                call_all(dev, video, s_std, dev->norm);
1229        }
1230
1231        return 0;
1232}
1233
1234int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1235{
1236        struct cx231xx_fh *fh = priv;
1237        struct cx231xx *dev = fh->dev;
1238        int rc;
1239
1240        rc = check_dev(dev);
1241        if (rc < 0)
1242                return rc;
1243
1244        if (0 != t->index)
1245                return -EINVAL;
1246
1247        strcpy(t->name, "Tuner");
1248
1249        t->type = V4L2_TUNER_ANALOG_TV;
1250        t->capability = V4L2_TUNER_CAP_NORM;
1251        t->rangehigh = 0xffffffffUL;
1252        t->signal = 0xffff;     /* LOCKED */
1253        call_all(dev, tuner, g_tuner, t);
1254
1255        return 0;
1256}
1257
1258int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
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        if (0 != t->index)
1269                return -EINVAL;
1270#if 0
1271        call_all(dev, tuner, s_tuner, t);
1272#endif
1273        return 0;
1274}
1275
1276int cx231xx_g_frequency(struct file *file, void *priv,
1277                              struct v4l2_frequency *f)
1278{
1279        struct cx231xx_fh *fh = priv;
1280        struct cx231xx *dev = fh->dev;
1281
1282        if (f->tuner)
1283                return -EINVAL;
1284
1285        f->frequency = dev->ctl_freq;
1286
1287        return 0;
1288}
1289
1290int cx231xx_s_frequency(struct file *file, void *priv,
1291                              const struct v4l2_frequency *f)
1292{
1293        struct cx231xx_fh *fh = priv;
1294        struct cx231xx *dev = fh->dev;
1295        struct v4l2_frequency new_freq = *f;
1296        int rc;
1297        u32 if_frequency = 5400000;
1298
1299        dev_dbg(dev->dev,
1300                "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1301                f->frequency, f->type);
1302
1303        rc = check_dev(dev);
1304        if (rc < 0)
1305                return rc;
1306
1307        if (0 != f->tuner)
1308                return -EINVAL;
1309
1310        /* set pre channel change settings in DIF first */
1311        rc = cx231xx_tuner_pre_channel_change(dev);
1312
1313        call_all(dev, tuner, s_frequency, f);
1314        call_all(dev, tuner, g_frequency, &new_freq);
1315        dev->ctl_freq = new_freq.frequency;
1316
1317        /* set post channel change settings in DIF first */
1318        rc = cx231xx_tuner_post_channel_change(dev);
1319
1320        if (dev->tuner_type == TUNER_NXP_TDA18271) {
1321                if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1322                        if_frequency = 5400000;  /*5.4MHz       */
1323                else if (dev->norm & V4L2_STD_B)
1324                        if_frequency = 6000000;  /*6.0MHz       */
1325                else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1326                        if_frequency = 6900000;  /*6.9MHz       */
1327                else if (dev->norm & V4L2_STD_GH)
1328                        if_frequency = 7100000;  /*7.1MHz       */
1329                else if (dev->norm & V4L2_STD_PAL_I)
1330                        if_frequency = 7250000;  /*7.25MHz      */
1331                else if (dev->norm & V4L2_STD_SECAM_L)
1332                        if_frequency = 6900000;  /*6.9MHz       */
1333                else if (dev->norm & V4L2_STD_SECAM_LC)
1334                        if_frequency = 1250000;  /*1.25MHz      */
1335
1336                dev_dbg(dev->dev,
1337                        "if_frequency is set to %d\n", if_frequency);
1338                cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1339
1340                update_HH_register_after_set_DIF(dev);
1341        }
1342
1343        dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1344
1345        return rc;
1346}
1347
1348#ifdef CONFIG_VIDEO_ADV_DEBUG
1349
1350int cx231xx_g_chip_info(struct file *file, void *fh,
1351                        struct v4l2_dbg_chip_info *chip)
1352{
1353        switch (chip->match.addr) {
1354        case 0: /* Cx231xx - internal registers */
1355                return 0;
1356        case 1: /* AFE - read byte */
1357                strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1358                return 0;
1359        case 2: /* Video Block - read byte */
1360                strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1361                return 0;
1362        case 3: /* I2S block - read byte */
1363                strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1364                return 0;
1365        case 4: /* AFE - read dword */
1366                strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1367                return 0;
1368        case 5: /* Video Block - read dword */
1369                strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1370                return 0;
1371        case 6: /* I2S Block - read dword */
1372                strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1373                return 0;
1374        }
1375        return -EINVAL;
1376}
1377
1378int cx231xx_g_register(struct file *file, void *priv,
1379                             struct v4l2_dbg_register *reg)
1380{
1381        struct cx231xx_fh *fh = priv;
1382        struct cx231xx *dev = fh->dev;
1383        int ret;
1384        u8 value[4] = { 0, 0, 0, 0 };
1385        u32 data = 0;
1386
1387        switch (reg->match.addr) {
1388        case 0: /* Cx231xx - internal registers */
1389                ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1390                                (u16)reg->reg, value, 4);
1391                reg->val = value[0] | value[1] << 8 |
1392                        value[2] << 16 | value[3] << 24;
1393                reg->size = 4;
1394                break;
1395        case 1: /* AFE - read byte */
1396                ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1397                                (u16)reg->reg, 2, &data, 1);
1398                reg->val = data;
1399                reg->size = 1;
1400                break;
1401        case 2: /* Video Block - read byte */
1402                ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1403                                (u16)reg->reg, 2, &data, 1);
1404                reg->val = data;
1405                reg->size = 1;
1406                break;
1407        case 3: /* I2S block - read byte */
1408                ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1409                                (u16)reg->reg, 1, &data, 1);
1410                reg->val = data;
1411                reg->size = 1;
1412                break;
1413        case 4: /* AFE - read dword */
1414                ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1415                                (u16)reg->reg, 2, &data, 4);
1416                reg->val = data;
1417                reg->size = 4;
1418                break;
1419        case 5: /* Video Block - read dword */
1420                ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1421                                (u16)reg->reg, 2, &data, 4);
1422                reg->val = data;
1423                reg->size = 4;
1424                break;
1425        case 6: /* I2S Block - read dword */
1426                ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1427                                (u16)reg->reg, 1, &data, 4);
1428                reg->val = data;
1429                reg->size = 4;
1430                break;
1431        default:
1432                return -EINVAL;
1433        }
1434        return ret < 0 ? ret : 0;
1435}
1436
1437int cx231xx_s_register(struct file *file, void *priv,
1438                             const struct v4l2_dbg_register *reg)
1439{
1440        struct cx231xx_fh *fh = priv;
1441        struct cx231xx *dev = fh->dev;
1442        int ret;
1443        u8 data[4] = { 0, 0, 0, 0 };
1444
1445        switch (reg->match.addr) {
1446        case 0: /* cx231xx internal registers */
1447                data[0] = (u8) reg->val;
1448                data[1] = (u8) (reg->val >> 8);
1449                data[2] = (u8) (reg->val >> 16);
1450                data[3] = (u8) (reg->val >> 24);
1451                ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1452                                (u16)reg->reg, data, 4);
1453                break;
1454        case 1: /* AFE - write byte */
1455                ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1456                                (u16)reg->reg, 2, reg->val, 1);
1457                break;
1458        case 2: /* Video Block - write byte */
1459                ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1460                                (u16)reg->reg, 2, reg->val, 1);
1461                break;
1462        case 3: /* I2S block - write byte */
1463                ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1464                                (u16)reg->reg, 1, reg->val, 1);
1465                break;
1466        case 4: /* AFE - write dword */
1467                ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1468                                (u16)reg->reg, 2, reg->val, 4);
1469                break;
1470        case 5: /* Video Block - write dword */
1471                ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1472                                (u16)reg->reg, 2, reg->val, 4);
1473                break;
1474        case 6: /* I2S block - write dword */
1475                ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1476                                (u16)reg->reg, 1, reg->val, 4);
1477                break;
1478        default:
1479                return -EINVAL;
1480        }
1481        return ret < 0 ? ret : 0;
1482}
1483#endif
1484
1485static int vidioc_cropcap(struct file *file, void *priv,
1486                          struct v4l2_cropcap *cc)
1487{
1488        struct cx231xx_fh *fh = priv;
1489        struct cx231xx *dev = fh->dev;
1490        bool is_50hz = dev->norm & V4L2_STD_625_50;
1491
1492        if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1493                return -EINVAL;
1494
1495        cc->bounds.left = 0;
1496        cc->bounds.top = 0;
1497        cc->bounds.width = dev->width;
1498        cc->bounds.height = dev->height;
1499        cc->defrect = cc->bounds;
1500        cc->pixelaspect.numerator = is_50hz ? 54 : 11;
1501        cc->pixelaspect.denominator = is_50hz ? 59 : 10;
1502
1503        return 0;
1504}
1505
1506static int vidioc_streamon(struct file *file, void *priv,
1507                           enum v4l2_buf_type type)
1508{
1509        struct cx231xx_fh *fh = priv;
1510        struct cx231xx *dev = fh->dev;
1511        int rc;
1512
1513        rc = check_dev(dev);
1514        if (rc < 0)
1515                return rc;
1516
1517        rc = res_get(fh);
1518
1519        if (likely(rc >= 0))
1520                rc = videobuf_streamon(&fh->vb_vidq);
1521
1522        call_all(dev, video, s_stream, 1);
1523
1524        return rc;
1525}
1526
1527static int vidioc_streamoff(struct file *file, void *priv,
1528                            enum v4l2_buf_type type)
1529{
1530        struct cx231xx_fh *fh = priv;
1531        struct cx231xx *dev = fh->dev;
1532        int rc;
1533
1534        rc = check_dev(dev);
1535        if (rc < 0)
1536                return rc;
1537
1538        if (type != fh->type)
1539                return -EINVAL;
1540
1541        cx25840_call(dev, video, s_stream, 0);
1542
1543        videobuf_streamoff(&fh->vb_vidq);
1544        res_free(fh);
1545
1546        return 0;
1547}
1548
1549int cx231xx_querycap(struct file *file, void *priv,
1550                           struct v4l2_capability *cap)
1551{
1552        struct video_device *vdev = video_devdata(file);
1553        struct cx231xx_fh *fh = priv;
1554        struct cx231xx *dev = fh->dev;
1555
1556        strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1557        strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1558        usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1559
1560        if (vdev->vfl_type == VFL_TYPE_RADIO)
1561                cap->device_caps = V4L2_CAP_RADIO;
1562        else {
1563                cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1564                if (vdev->vfl_type == VFL_TYPE_VBI)
1565                        cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1566                else
1567                        cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1568        }
1569        if (dev->tuner_type != TUNER_ABSENT)
1570                cap->device_caps |= V4L2_CAP_TUNER;
1571        cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1572                V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1573                V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1574        if (video_is_registered(&dev->radio_dev))
1575                cap->capabilities |= V4L2_CAP_RADIO;
1576
1577        return 0;
1578}
1579
1580static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1581                                   struct v4l2_fmtdesc *f)
1582{
1583        if (unlikely(f->index >= ARRAY_SIZE(format)))
1584                return -EINVAL;
1585
1586        strlcpy(f->description, format[f->index].name, sizeof(f->description));
1587        f->pixelformat = format[f->index].fourcc;
1588
1589        return 0;
1590}
1591
1592/* RAW VBI ioctls */
1593
1594static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1595                                struct v4l2_format *f)
1596{
1597        struct cx231xx_fh *fh = priv;
1598        struct cx231xx *dev = fh->dev;
1599
1600        f->fmt.vbi.sampling_rate = 6750000 * 4;
1601        f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1602        f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1603        f->fmt.vbi.offset = 0;
1604        f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1605            PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1606        f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1607            PAL_VBI_LINES : NTSC_VBI_LINES;
1608        f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1609            PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1610        f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1611        memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1612
1613        return 0;
1614
1615}
1616
1617static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1618                                  struct v4l2_format *f)
1619{
1620        struct cx231xx_fh *fh = priv;
1621        struct cx231xx *dev = fh->dev;
1622
1623        f->fmt.vbi.sampling_rate = 6750000 * 4;
1624        f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1625        f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1626        f->fmt.vbi.offset = 0;
1627        f->fmt.vbi.flags = 0;
1628        f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1629            PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1630        f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1631            PAL_VBI_LINES : NTSC_VBI_LINES;
1632        f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1633            PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1634        f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1635        memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1636
1637        return 0;
1638
1639}
1640
1641static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1642                                  struct v4l2_format *f)
1643{
1644        struct cx231xx_fh *fh = priv;
1645        struct cx231xx *dev = fh->dev;
1646
1647        if (dev->vbi_stream_on && !fh->stream_on) {
1648                dev_err(dev->dev,
1649                        "%s device in use by another fh\n", __func__);
1650                return -EBUSY;
1651        }
1652        return vidioc_try_fmt_vbi_cap(file, priv, f);
1653}
1654
1655static int vidioc_reqbufs(struct file *file, void *priv,
1656                          struct v4l2_requestbuffers *rb)
1657{
1658        struct cx231xx_fh *fh = priv;
1659        struct cx231xx *dev = fh->dev;
1660        int rc;
1661
1662        rc = check_dev(dev);
1663        if (rc < 0)
1664                return rc;
1665
1666        return videobuf_reqbufs(&fh->vb_vidq, rb);
1667}
1668
1669static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1670{
1671        struct cx231xx_fh *fh = priv;
1672        struct cx231xx *dev = fh->dev;
1673        int rc;
1674
1675        rc = check_dev(dev);
1676        if (rc < 0)
1677                return rc;
1678
1679        return videobuf_querybuf(&fh->vb_vidq, b);
1680}
1681
1682static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1683{
1684        struct cx231xx_fh *fh = priv;
1685        struct cx231xx *dev = fh->dev;
1686        int rc;
1687
1688        rc = check_dev(dev);
1689        if (rc < 0)
1690                return rc;
1691
1692        return videobuf_qbuf(&fh->vb_vidq, b);
1693}
1694
1695static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1696{
1697        struct cx231xx_fh *fh = priv;
1698        struct cx231xx *dev = fh->dev;
1699        int rc;
1700
1701        rc = check_dev(dev);
1702        if (rc < 0)
1703                return rc;
1704
1705        return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1706}
1707
1708/* ----------------------------------------------------------- */
1709/* RADIO ESPECIFIC IOCTLS                                      */
1710/* ----------------------------------------------------------- */
1711
1712static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1713{
1714        struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1715
1716        if (t->index)
1717                return -EINVAL;
1718
1719        strcpy(t->name, "Radio");
1720
1721        call_all(dev, tuner, g_tuner, t);
1722
1723        return 0;
1724}
1725static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1726{
1727        struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1728
1729        if (t->index)
1730                return -EINVAL;
1731
1732        call_all(dev, tuner, s_tuner, t);
1733
1734        return 0;
1735}
1736
1737/*
1738 * cx231xx_v4l2_open()
1739 * inits the device and starts isoc transfer
1740 */
1741static int cx231xx_v4l2_open(struct file *filp)
1742{
1743        int radio = 0;
1744        struct video_device *vdev = video_devdata(filp);
1745        struct cx231xx *dev = video_drvdata(filp);
1746        struct cx231xx_fh *fh;
1747        enum v4l2_buf_type fh_type = 0;
1748
1749        switch (vdev->vfl_type) {
1750        case VFL_TYPE_GRABBER:
1751                fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1752                break;
1753        case VFL_TYPE_VBI:
1754                fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1755                break;
1756        case VFL_TYPE_RADIO:
1757                radio = 1;
1758                break;
1759        }
1760
1761        cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1762                         video_device_node_name(vdev), v4l2_type_names[fh_type],
1763                         dev->users);
1764
1765#if 0
1766        errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1767        if (errCode < 0) {
1768                dev_err(dev->dev,
1769                        "Device locked on digital mode. Can't open analog\n");
1770                return -EBUSY;
1771        }
1772#endif
1773
1774        fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1775        if (!fh)
1776                return -ENOMEM;
1777        if (mutex_lock_interruptible(&dev->lock)) {
1778                kfree(fh);
1779                return -ERESTARTSYS;
1780        }
1781        fh->dev = dev;
1782        fh->type = fh_type;
1783        filp->private_data = fh;
1784        v4l2_fh_init(&fh->fh, vdev);
1785
1786        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1787                /* Power up in Analog TV mode */
1788                if (dev->board.external_av)
1789                        cx231xx_set_power_mode(dev,
1790                                 POLARIS_AVMODE_ENXTERNAL_AV);
1791                else
1792                        cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1793
1794#if 0
1795                cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1796#endif
1797
1798                /* set video alternate setting */
1799                cx231xx_set_video_alternate(dev);
1800
1801                /* Needed, since GPIO might have disabled power of
1802                   some i2c device */
1803                cx231xx_config_i2c(dev);
1804
1805                /* device needs to be initialized before isoc transfer */
1806                dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1807
1808        }
1809        if (radio) {
1810                cx231xx_videodbg("video_open: setting radio device\n");
1811
1812                /* cx231xx_start_radio(dev); */
1813
1814                call_all(dev, tuner, s_radio);
1815        }
1816
1817        dev->users++;
1818
1819        if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1820                videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1821                                            NULL, &dev->video_mode.slock,
1822                                            fh->type, V4L2_FIELD_INTERLACED,
1823                                            sizeof(struct cx231xx_buffer),
1824                                            fh, &dev->lock);
1825        if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1826                /* Set the required alternate setting  VBI interface works in
1827                   Bulk mode only */
1828                cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1829
1830                videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1831                                            NULL, &dev->vbi_mode.slock,
1832                                            fh->type, V4L2_FIELD_SEQ_TB,
1833                                            sizeof(struct cx231xx_buffer),
1834                                            fh, &dev->lock);
1835        }
1836        mutex_unlock(&dev->lock);
1837        v4l2_fh_add(&fh->fh);
1838
1839        return 0;
1840}
1841
1842/*
1843 * cx231xx_realease_resources()
1844 * unregisters the v4l2,i2c and usb devices
1845 * called when the device gets disconected or at module unload
1846*/
1847void cx231xx_release_analog_resources(struct cx231xx *dev)
1848{
1849
1850        /*FIXME: I2C IR should be disconnected */
1851
1852        if (video_is_registered(&dev->radio_dev))
1853                video_unregister_device(&dev->radio_dev);
1854        if (video_is_registered(&dev->vbi_dev)) {
1855                dev_info(dev->dev, "V4L2 device %s deregistered\n",
1856                        video_device_node_name(&dev->vbi_dev));
1857                video_unregister_device(&dev->vbi_dev);
1858        }
1859        if (video_is_registered(&dev->vdev)) {
1860                dev_info(dev->dev, "V4L2 device %s deregistered\n",
1861                        video_device_node_name(&dev->vdev));
1862
1863                if (dev->board.has_417)
1864                        cx231xx_417_unregister(dev);
1865
1866                video_unregister_device(&dev->vdev);
1867        }
1868        v4l2_ctrl_handler_free(&dev->ctrl_handler);
1869        v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1870}
1871
1872/*
1873 * cx231xx_close()
1874 * stops streaming and deallocates all resources allocated by the v4l2
1875 * calls and ioctls
1876 */
1877static int cx231xx_close(struct file *filp)
1878{
1879        struct cx231xx_fh *fh = filp->private_data;
1880        struct cx231xx *dev = fh->dev;
1881
1882        cx231xx_videodbg("users=%d\n", dev->users);
1883
1884        cx231xx_videodbg("users=%d\n", dev->users);
1885        if (res_check(fh))
1886                res_free(fh);
1887
1888        /*
1889         * To workaround error number=-71 on EP0 for VideoGrabber,
1890         *       need exclude following.
1891         * FIXME: It is probably safe to remove most of these, as we're
1892         * now avoiding the alternate setting for INDEX_VANC
1893         */
1894        if (!dev->board.no_alt_vanc)
1895                if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1896                        videobuf_stop(&fh->vb_vidq);
1897                        videobuf_mmap_free(&fh->vb_vidq);
1898
1899                        /* the device is already disconnect,
1900                           free the remaining resources */
1901                        if (dev->state & DEV_DISCONNECTED) {
1902                                if (atomic_read(&dev->devlist_count) > 0) {
1903                                        cx231xx_release_resources(dev);
1904                                        fh->dev = NULL;
1905                                        return 0;
1906                                }
1907                                return 0;
1908                        }
1909
1910                        /* do this before setting alternate! */
1911                        cx231xx_uninit_vbi_isoc(dev);
1912
1913                        /* set alternate 0 */
1914                        if (!dev->vbi_or_sliced_cc_mode)
1915                                cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1916                        else
1917                                cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1918
1919                        v4l2_fh_del(&fh->fh);
1920                        v4l2_fh_exit(&fh->fh);
1921                        kfree(fh);
1922                        dev->users--;
1923                        wake_up_interruptible(&dev->open);
1924                        return 0;
1925                }
1926
1927        v4l2_fh_del(&fh->fh);
1928        dev->users--;
1929        if (!dev->users) {
1930                videobuf_stop(&fh->vb_vidq);
1931                videobuf_mmap_free(&fh->vb_vidq);
1932
1933                /* the device is already disconnect,
1934                   free the remaining resources */
1935                if (dev->state & DEV_DISCONNECTED) {
1936                        cx231xx_release_resources(dev);
1937                        fh->dev = NULL;
1938                        return 0;
1939                }
1940
1941                /* Save some power by putting tuner to sleep */
1942                call_all(dev, core, s_power, 0);
1943
1944                /* do this before setting alternate! */
1945                if (dev->USE_ISO)
1946                        cx231xx_uninit_isoc(dev);
1947                else
1948                        cx231xx_uninit_bulk(dev);
1949                cx231xx_set_mode(dev, CX231XX_SUSPEND);
1950
1951                /* set alternate 0 */
1952                cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1953        }
1954        v4l2_fh_exit(&fh->fh);
1955        kfree(fh);
1956        wake_up_interruptible(&dev->open);
1957        return 0;
1958}
1959
1960static int cx231xx_v4l2_close(struct file *filp)
1961{
1962        struct cx231xx_fh *fh = filp->private_data;
1963        struct cx231xx *dev = fh->dev;
1964        int rc;
1965
1966        mutex_lock(&dev->lock);
1967        rc = cx231xx_close(filp);
1968        mutex_unlock(&dev->lock);
1969        return rc;
1970}
1971
1972/*
1973 * cx231xx_v4l2_read()
1974 * will allocate buffers when called for the first time
1975 */
1976static ssize_t
1977cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1978                  loff_t *pos)
1979{
1980        struct cx231xx_fh *fh = filp->private_data;
1981        struct cx231xx *dev = fh->dev;
1982        int rc;
1983
1984        rc = check_dev(dev);
1985        if (rc < 0)
1986                return rc;
1987
1988        if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1989            (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1990                rc = res_get(fh);
1991
1992                if (unlikely(rc < 0))
1993                        return rc;
1994
1995                if (mutex_lock_interruptible(&dev->lock))
1996                        return -ERESTARTSYS;
1997                rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1998                                            filp->f_flags & O_NONBLOCK);
1999                mutex_unlock(&dev->lock);
2000                return rc;
2001        }
2002        return 0;
2003}
2004
2005/*
2006 * cx231xx_v4l2_poll()
2007 * will allocate buffers when called for the first time
2008 */
2009static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
2010{
2011        unsigned long req_events = poll_requested_events(wait);
2012        struct cx231xx_fh *fh = filp->private_data;
2013        struct cx231xx *dev = fh->dev;
2014        unsigned res = 0;
2015        int rc;
2016
2017        rc = check_dev(dev);
2018        if (rc < 0)
2019                return POLLERR;
2020
2021        rc = res_get(fh);
2022
2023        if (unlikely(rc < 0))
2024                return POLLERR;
2025
2026        if (v4l2_event_pending(&fh->fh))
2027                res |= POLLPRI;
2028        else
2029                poll_wait(filp, &fh->fh.wait, wait);
2030
2031        if (!(req_events & (POLLIN | POLLRDNORM)))
2032                return res;
2033
2034        if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2035            (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
2036                mutex_lock(&dev->lock);
2037                res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2038                mutex_unlock(&dev->lock);
2039                return res;
2040        }
2041        return res | POLLERR;
2042}
2043
2044/*
2045 * cx231xx_v4l2_mmap()
2046 */
2047static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2048{
2049        struct cx231xx_fh *fh = filp->private_data;
2050        struct cx231xx *dev = fh->dev;
2051        int rc;
2052
2053        rc = check_dev(dev);
2054        if (rc < 0)
2055                return rc;
2056
2057        rc = res_get(fh);
2058
2059        if (unlikely(rc < 0))
2060                return rc;
2061
2062        if (mutex_lock_interruptible(&dev->lock))
2063                return -ERESTARTSYS;
2064        rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2065        mutex_unlock(&dev->lock);
2066
2067        cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2068                         (unsigned long)vma->vm_start,
2069                         (unsigned long)vma->vm_end -
2070                         (unsigned long)vma->vm_start, rc);
2071
2072        return rc;
2073}
2074
2075static const struct v4l2_file_operations cx231xx_v4l_fops = {
2076        .owner   = THIS_MODULE,
2077        .open    = cx231xx_v4l2_open,
2078        .release = cx231xx_v4l2_close,
2079        .read    = cx231xx_v4l2_read,
2080        .poll    = cx231xx_v4l2_poll,
2081        .mmap    = cx231xx_v4l2_mmap,
2082        .unlocked_ioctl   = video_ioctl2,
2083};
2084
2085static const struct v4l2_ioctl_ops video_ioctl_ops = {
2086        .vidioc_querycap               = cx231xx_querycap,
2087        .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2088        .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2089        .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2090        .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2091        .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2092        .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2093        .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
2094        .vidioc_cropcap                = vidioc_cropcap,
2095        .vidioc_reqbufs                = vidioc_reqbufs,
2096        .vidioc_querybuf               = vidioc_querybuf,
2097        .vidioc_qbuf                   = vidioc_qbuf,
2098        .vidioc_dqbuf                  = vidioc_dqbuf,
2099        .vidioc_s_std                  = vidioc_s_std,
2100        .vidioc_g_std                  = vidioc_g_std,
2101        .vidioc_enum_input             = cx231xx_enum_input,
2102        .vidioc_g_input                = cx231xx_g_input,
2103        .vidioc_s_input                = cx231xx_s_input,
2104        .vidioc_streamon               = vidioc_streamon,
2105        .vidioc_streamoff              = vidioc_streamoff,
2106        .vidioc_g_tuner                = cx231xx_g_tuner,
2107        .vidioc_s_tuner                = cx231xx_s_tuner,
2108        .vidioc_g_frequency            = cx231xx_g_frequency,
2109        .vidioc_s_frequency            = cx231xx_s_frequency,
2110#ifdef CONFIG_VIDEO_ADV_DEBUG
2111        .vidioc_g_chip_info            = cx231xx_g_chip_info,
2112        .vidioc_g_register             = cx231xx_g_register,
2113        .vidioc_s_register             = cx231xx_s_register,
2114#endif
2115        .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2116        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2117};
2118
2119static struct video_device cx231xx_vbi_template;
2120
2121static const struct video_device cx231xx_video_template = {
2122        .fops         = &cx231xx_v4l_fops,
2123        .release      = video_device_release_empty,
2124        .ioctl_ops    = &video_ioctl_ops,
2125        .tvnorms      = V4L2_STD_ALL,
2126};
2127
2128static const struct v4l2_file_operations radio_fops = {
2129        .owner   = THIS_MODULE,
2130        .open   = cx231xx_v4l2_open,
2131        .release = cx231xx_v4l2_close,
2132        .poll = v4l2_ctrl_poll,
2133        .unlocked_ioctl = video_ioctl2,
2134};
2135
2136static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2137        .vidioc_querycap    = cx231xx_querycap,
2138        .vidioc_g_tuner     = radio_g_tuner,
2139        .vidioc_s_tuner     = radio_s_tuner,
2140        .vidioc_g_frequency = cx231xx_g_frequency,
2141        .vidioc_s_frequency = cx231xx_s_frequency,
2142#ifdef CONFIG_VIDEO_ADV_DEBUG
2143        .vidioc_g_chip_info = cx231xx_g_chip_info,
2144        .vidioc_g_register  = cx231xx_g_register,
2145        .vidioc_s_register  = cx231xx_s_register,
2146#endif
2147        .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2148        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2149};
2150
2151static struct video_device cx231xx_radio_template = {
2152        .name      = "cx231xx-radio",
2153        .fops      = &radio_fops,
2154        .ioctl_ops = &radio_ioctl_ops,
2155};
2156
2157/******************************** usb interface ******************************/
2158
2159static void cx231xx_vdev_init(struct cx231xx *dev,
2160                struct video_device *vfd,
2161                const struct video_device *template,
2162                const char *type_name)
2163{
2164        *vfd = *template;
2165        vfd->v4l2_dev = &dev->v4l2_dev;
2166        vfd->release = video_device_release_empty;
2167        vfd->lock = &dev->lock;
2168
2169        snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2170
2171        video_set_drvdata(vfd, dev);
2172        if (dev->tuner_type == TUNER_ABSENT) {
2173                v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2174                v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2175                v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2176                v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2177        }
2178}
2179
2180int cx231xx_register_analog_devices(struct cx231xx *dev)
2181{
2182        int ret;
2183
2184        dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2185
2186        /* set default norm */
2187        dev->norm = V4L2_STD_PAL;
2188        dev->width = norm_maxw(dev);
2189        dev->height = norm_maxh(dev);
2190        dev->interlaced = 0;
2191
2192        /* Analog specific initialization */
2193        dev->format = &format[0];
2194
2195        /* Set the initial input */
2196        video_mux(dev, dev->video_input);
2197
2198        call_all(dev, video, s_std, dev->norm);
2199
2200        v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2201        v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2202
2203        if (dev->sd_cx25840) {
2204                v4l2_ctrl_add_handler(&dev->ctrl_handler,
2205                                dev->sd_cx25840->ctrl_handler, NULL);
2206                v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2207                                dev->sd_cx25840->ctrl_handler,
2208                                v4l2_ctrl_radio_filter);
2209        }
2210
2211        if (dev->ctrl_handler.error)
2212                return dev->ctrl_handler.error;
2213        if (dev->radio_ctrl_handler.error)
2214                return dev->radio_ctrl_handler.error;
2215
2216        /* enable vbi capturing */
2217        /* write code here...  */
2218
2219        /* allocate and fill video video_device struct */
2220        cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2221#if defined(CONFIG_MEDIA_CONTROLLER)
2222        dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2223        ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
2224        if (ret < 0)
2225                dev_err(dev->dev, "failed to initialize video media entity!\n");
2226#endif
2227        dev->vdev.ctrl_handler = &dev->ctrl_handler;
2228        /* register v4l2 video video_device */
2229        ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2230                                    video_nr[dev->devno]);
2231        if (ret) {
2232                dev_err(dev->dev,
2233                        "unable to register video device (error=%i).\n",
2234                        ret);
2235                return ret;
2236        }
2237
2238        dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2239                video_device_node_name(&dev->vdev));
2240
2241        /* Initialize VBI template */
2242        cx231xx_vbi_template = cx231xx_video_template;
2243        strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2244
2245        /* Allocate and fill vbi video_device struct */
2246        cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2247
2248#if defined(CONFIG_MEDIA_CONTROLLER)
2249        dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2250        ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
2251        if (ret < 0)
2252                dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2253#endif
2254        dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2255        /* register v4l2 vbi video_device */
2256        ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2257                                    vbi_nr[dev->devno]);
2258        if (ret < 0) {
2259                dev_err(dev->dev, "unable to register vbi device\n");
2260                return ret;
2261        }
2262
2263        dev_info(dev->dev, "Registered VBI device %s\n",
2264                video_device_node_name(&dev->vbi_dev));
2265
2266        if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2267                cx231xx_vdev_init(dev, &dev->radio_dev,
2268                                &cx231xx_radio_template, "radio");
2269                dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2270                ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2271                                            radio_nr[dev->devno]);
2272                if (ret < 0) {
2273                        dev_err(dev->dev,
2274                                "can't register radio device\n");
2275                        return ret;
2276                }
2277                dev_info(dev->dev, "Registered radio device as %s\n",
2278                        video_device_node_name(&dev->radio_dev));
2279        }
2280
2281        return 0;
2282}
2283