drivers/media/pci/cx25821/cx25821-video.c

   1 /*
   2  *  Driver for the Conexant CX25821 PCIe bridge
   3  *
   4  *  Copyright (C) 2009 Conexant Systems Inc.
   5  *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
   6  *  Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
   7  *  Parts adapted/taken from Eduardo Moscoso Rubino
   8  *  Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com>
   9  *
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the Free Software
  24  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  28
  29 #include "cx25821-video.h"
  30
  31 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
  32 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
  33 MODULE_LICENSE("GPL");
  34
  35 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
  36
  37 module_param_array(video_nr, int, NULL, 0444);
  38
  39 MODULE_PARM_DESC(video_nr, "video device numbers");
  40
  41 static unsigned int video_debug = VIDEO_DEBUG;
  42 module_param(video_debug, int, 0644);
  43 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  44
  45 static unsigned int irq_debug;
  46 module_param(irq_debug, int, 0644);
  47 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
  48
  49 static unsigned int vid_limit = 16;
  50 module_param(vid_limit, int, 0644);
  51 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
  52
  53 #define FORMAT_FLAGS_PACKED       0x01
  54
  55 static const struct cx25821_fmt formats[] = {
  56         {
  57                 .name = "8 bpp, gray",
  58                 .fourcc = V4L2_PIX_FMT_GREY,
  59                 .depth = 8,
  60                 .flags = FORMAT_FLAGS_PACKED,
  61          }, {
  62                 .name = "4:1:1, packed, Y41P",
  63                 .fourcc = V4L2_PIX_FMT_Y41P,
  64                 .depth = 12,
  65                 .flags = FORMAT_FLAGS_PACKED,
  66         }, {
  67                 .name = "4:2:2, packed, YUYV",
  68                 .fourcc = V4L2_PIX_FMT_YUYV,
  69                 .depth = 16,
  70                 .flags = FORMAT_FLAGS_PACKED,
  71         }, {
  72                 .name = "4:2:2, packed, UYVY",
  73                 .fourcc = V4L2_PIX_FMT_UYVY,
  74                 .depth = 16,
  75                 .flags = FORMAT_FLAGS_PACKED,
  76         }, {
  77                 .name = "4:2:0, YUV",
  78                 .fourcc = V4L2_PIX_FMT_YUV420,
  79                 .depth = 12,
  80                 .flags = FORMAT_FLAGS_PACKED,
  81         },
  82 };
  83
  84 static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
  85 {
  86         unsigned int i;
  87
  88         if (fourcc == V4L2_PIX_FMT_Y41P || fourcc == V4L2_PIX_FMT_YUV411P)
  89                 return formats + 1;
  90
  91         for (i = 0; i < ARRAY_SIZE(formats); i++)
  92                 if (formats[i].fourcc == fourcc)
  93                         return formats + i;
  94
  95         pr_err("%s(0x%08x) NOT FOUND\n", __func__, fourcc);
  96         return NULL;
  97 }
  98
  99 void cx25821_video_wakeup(struct cx25821_dev *dev, struct cx25821_dmaqueue *q,
 100                           u32 count)
 101 {
 102         struct cx25821_buffer *buf;
 103         int bc;
 104
 105         for (bc = 0;; bc++) {
 106                 if (list_empty(&q->active)) {
 107                         dprintk(1, "bc=%d (=0: active empty)\n", bc);
 108                         break;
 109                 }
 110
 111                 buf = list_entry(q->active.next, struct cx25821_buffer,
 112                                 vb.queue);
 113
 114                 /* count comes from the hw and it is 16bit wide --
 115                  * this trick handles wrap-arounds correctly for
 116                  * up to 32767 buffers in flight... */
 117                 if ((s16) (count - buf->count) < 0)
 118                         break;
 119
 120                 v4l2_get_timestamp(&buf->vb.ts);
 121                 buf->vb.state = VIDEOBUF_DONE;
 122                 list_del(&buf->vb.queue);
 123                 wake_up(&buf->vb.done);
 124         }
 125
 126         if (list_empty(&q->active))
 127                 del_timer(&q->timeout);
 128         else
 129                 mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
 130         if (bc != 1)
 131                 pr_err("%s: %d buffers handled (should be 1)\n", __func__, bc);
 132 }
 133
 134 static int cx25821_set_tvnorm(struct cx25821_dev *dev, v4l2_std_id norm)
 135 {
 136         dprintk(1, "%s(norm = 0x%08x) name: [%s]\n",
 137                 __func__, (unsigned int)norm, v4l2_norm_to_name(norm));
 138
 139         dev->tvnorm = norm;
 140
 141         /* Tell the internal A/V decoder */
 142         cx25821_call_all(dev, core, s_std, norm);
 143
 144         return 0;
 145 }
 146
 147 static struct video_device *cx25821_vdev_init(struct cx25821_dev *dev,
 148                                        struct pci_dev *pci,
 149                                        const struct video_device *template,
 150                                        char *type)
 151 {
 152         struct video_device *vfd;
 153         dprintk(1, "%s()\n", __func__);
 154
 155         vfd = video_device_alloc();
 156         if (NULL == vfd)
 157                 return NULL;
 158         *vfd = *template;
 159         vfd->v4l2_dev = &dev->v4l2_dev;
 160         vfd->release = video_device_release;
 161         snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name, type,
 162                  cx25821_boards[dev->board].name);
 163         video_set_drvdata(vfd, dev);
 164         return vfd;
 165 }
 166
 167 /*
 168 static int cx25821_ctrl_query(struct v4l2_queryctrl *qctrl)
 169 {
 170         int i;
 171
 172         if (qctrl->id < V4L2_CID_BASE || qctrl->id >= V4L2_CID_LASTP1)
 173                 return -EINVAL;
 174         for (i = 0; i < CX25821_CTLS; i++)
 175                 if (cx25821_ctls[i].v.id == qctrl->id)
 176                         break;
 177         if (i == CX25821_CTLS) {
 178                 *qctrl = no_ctl;
 179                 return 0;
 180         }
 181         *qctrl = cx25821_ctls[i].v;
 182         return 0;
 183 }
 184 */
 185
 186 /* resource management */
 187 int cx25821_res_get(struct cx25821_dev *dev, struct cx25821_fh *fh,
 188                     unsigned int bit)
 189 {
 190         dprintk(1, "%s()\n", __func__);
 191         if (fh->resources & bit)
 192                 /* have it already allocated */
 193                 return 1;
 194
 195         /* is it free? */
 196         mutex_lock(&dev->lock);
 197         if (dev->channels[fh->channel_id].resources & bit) {
 198                 /* no, someone else uses it */
 199                 mutex_unlock(&dev->lock);
 200                 return 0;
 201         }
 202         /* it's free, grab it */
 203         fh->resources |= bit;
 204         dev->channels[fh->channel_id].resources |= bit;
 205         dprintk(1, "res: get %d\n", bit);
 206         mutex_unlock(&dev->lock);
 207         return 1;
 208 }
 209
 210 int cx25821_res_check(struct cx25821_fh *fh, unsigned int bit)
 211 {
 212         return fh->resources & bit;
 213 }
 214
 215 int cx25821_res_locked(struct cx25821_fh *fh, unsigned int bit)
 216 {
 217         return fh->dev->channels[fh->channel_id].resources & bit;
 218 }
 219
 220 void cx25821_res_free(struct cx25821_dev *dev, struct cx25821_fh *fh,
 221                       unsigned int bits)
 222 {
 223         BUG_ON((fh->resources & bits) != bits);
 224         dprintk(1, "%s()\n", __func__);
 225
 226         mutex_lock(&dev->lock);
 227         fh->resources &= ~bits;
 228         dev->channels[fh->channel_id].resources &= ~bits;
 229         dprintk(1, "res: put %d\n", bits);
 230         mutex_unlock(&dev->lock);
 231 }
 232
 233 static int cx25821_video_mux(struct cx25821_dev *dev, unsigned int input)
 234 {
 235         struct v4l2_routing route;
 236         memset(&route, 0, sizeof(route));
 237
 238         dprintk(1, "%s(): video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n",
 239                 __func__, input, INPUT(input)->vmux, INPUT(input)->gpio0,
 240                 INPUT(input)->gpio1, INPUT(input)->gpio2, INPUT(input)->gpio3);
 241         dev->input = input;
 242
 243         route.input = INPUT(input)->vmux;
 244
 245         /* Tell the internal A/V decoder */
 246         cx25821_call_all(dev, video, s_routing, INPUT(input)->vmux, 0, 0);
 247
 248         return 0;
 249 }
 250
 251 int cx25821_start_video_dma(struct cx25821_dev *dev,
 252                             struct cx25821_dmaqueue *q,
 253                             struct cx25821_buffer *buf,
 254                             const struct sram_channel *channel)
 255 {
 256         int tmp = 0;
 257
 258         /* setup fifo + format */
 259         cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma);
 260
 261         /* reset counter */
 262         cx_write(channel->gpcnt_ctl, 3);
 263         q->count = 1;
 264
 265         /* enable irq */
 266         cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
 267         cx_set(channel->int_msk, 0x11);
 268
 269         /* start dma */
 270         cx_write(channel->dma_ctl, 0x11);       /* FIFO and RISC enable */
 271
 272         /* make sure upstream setting if any is reversed */
 273         tmp = cx_read(VID_CH_MODE_SEL);
 274         cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
 275
 276         return 0;
 277 }
 278
 279 static int cx25821_restart_video_queue(struct cx25821_dev *dev,
 280                                        struct cx25821_dmaqueue *q,
 281                                        const struct sram_channel *channel)
 282 {
 283         struct cx25821_buffer *buf, *prev;
 284         struct list_head *item;
 285
 286         if (!list_empty(&q->active)) {
 287                 buf = list_entry(q->active.next, struct cx25821_buffer,
 288                                 vb.queue);
 289
 290                 cx25821_start_video_dma(dev, q, buf, channel);
 291
 292                 list_for_each(item, &q->active) {
 293                         buf = list_entry(item, struct cx25821_buffer, vb.queue);
 294                         buf->count = q->count++;
 295                 }
 296
 297                 mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
 298                 return 0;
 299         }
 300
 301         prev = NULL;
 302         for (;;) {
 303                 if (list_empty(&q->queued))
 304                         return 0;
 305
 306                 buf = list_entry(q->queued.next, struct cx25821_buffer,
 307                                 vb.queue);
 308
 309                 if (NULL == prev) {
 310                         list_move_tail(&buf->vb.queue, &q->active);
 311                         cx25821_start_video_dma(dev, q, buf, channel);
 312                         buf->vb.state = VIDEOBUF_ACTIVE;
 313                         buf->count = q->count++;
 314                         mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
 315                 } else if (prev->vb.width == buf->vb.width &&
 316                            prev->vb.height == buf->vb.height &&
 317                            prev->fmt == buf->fmt) {
 318                         list_move_tail(&buf->vb.queue, &q->active);
 319                         buf->vb.state = VIDEOBUF_ACTIVE;
 320                         buf->count = q->count++;
 321                         prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 322                         prev->risc.jmp[2] = cpu_to_le32(0); /* Bits 63 - 32 */
 323                 } else {
 324                         return 0;
 325                 }
 326                 prev = buf;
 327         }
 328 }
 329
 330 static void cx25821_vid_timeout(unsigned long data)
 331 {
 332         struct cx25821_data *timeout_data = (struct cx25821_data *)data;
 333         struct cx25821_dev *dev = timeout_data->dev;
 334         const struct sram_channel *channel = timeout_data->channel;
 335         struct cx25821_dmaqueue *q = &dev->channels[channel->i].vidq;
 336         struct cx25821_buffer *buf;
 337         unsigned long flags;
 338
 339         /* cx25821_sram_channel_dump(dev, channel); */
 340         cx_clear(channel->dma_ctl, 0x11);
 341
 342         spin_lock_irqsave(&dev->slock, flags);
 343         while (!list_empty(&q->active)) {
 344                 buf = list_entry(q->active.next, struct cx25821_buffer,
 345                                 vb.queue);
 346                 list_del(&buf->vb.queue);
 347
 348                 buf->vb.state = VIDEOBUF_ERROR;
 349                 wake_up(&buf->vb.done);
 350         }
 351
 352         cx25821_restart_video_queue(dev, q, channel);
 353         spin_unlock_irqrestore(&dev->slock, flags);
 354 }
 355
 356 int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
 357 {
 358         u32 count = 0;
 359         int handled = 0;
 360         u32 mask;
 361         const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
 362
 363         mask = cx_read(channel->int_msk);
 364         if (0 == (status & mask))
 365                 return handled;
 366
 367         cx_write(channel->int_stat, status);
 368
 369         /* risc op code error */
 370         if (status & (1 << 16)) {
 371                 pr_warn("%s, %s: video risc op code error\n",
 372                         dev->name, channel->name);
 373                 cx_clear(channel->dma_ctl, 0x11);
 374                 cx25821_sram_channel_dump(dev, channel);
 375         }
 376
 377         /* risc1 y */
 378         if (status & FLD_VID_DST_RISC1) {
 379                 spin_lock(&dev->slock);
 380                 count = cx_read(channel->gpcnt);
 381                 cx25821_video_wakeup(dev, &dev->channels[channel->i].vidq,
 382                                 count);
 383                 spin_unlock(&dev->slock);
 384                 handled++;
 385         }
 386
 387         /* risc2 y */
 388         if (status & 0x10) {
 389                 dprintk(2, "stopper video\n");
 390                 spin_lock(&dev->slock);
 391                 cx25821_restart_video_queue(dev,
 392                                 &dev->channels[channel->i].vidq, channel);
 393                 spin_unlock(&dev->slock);
 394                 handled++;
 395         }
 396         return handled;
 397 }
 398
 399 static int cx25821_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 400                  unsigned int *size)
 401 {
 402         struct cx25821_fh *fh = q->priv_data;
 403
 404         *size = fh->fmt->depth * fh->width * fh->height >> 3;
 405
 406         if (0 == *count)
 407                 *count = 32;
 408
 409         if (*size * *count > vid_limit * 1024 * 1024)
 410                 *count = (vid_limit * 1024 * 1024) / *size;
 411
 412         return 0;
 413 }
 414
 415 static int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
 416                    enum v4l2_field field)
 417 {
 418         struct cx25821_fh *fh = q->priv_data;
 419         struct cx25821_dev *dev = fh->dev;
 420         struct cx25821_buffer *buf =
 421                 container_of(vb, struct cx25821_buffer, vb);
 422         int rc, init_buffer = 0;
 423         u32 line0_offset;
 424         struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
 425         int bpl_local = LINE_SIZE_D1;
 426         int channel_opened = fh->channel_id;
 427
 428         BUG_ON(NULL == fh->fmt);
 429         if (fh->width < 48 || fh->width > 720 ||
 430             fh->height < 32 || fh->height > 576)
 431                 return -EINVAL;
 432
 433         buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3;
 434
 435         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 436                 return -EINVAL;
 437
 438         if (buf->fmt != fh->fmt ||
 439             buf->vb.width != fh->width ||
 440             buf->vb.height != fh->height || buf->vb.field != field) {
 441                 buf->fmt = fh->fmt;
 442                 buf->vb.width = fh->width;
 443                 buf->vb.height = fh->height;
 444                 buf->vb.field = field;
 445                 init_buffer = 1;
 446         }
 447
 448         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 449                 init_buffer = 1;
 450                 rc = videobuf_iolock(q, &buf->vb, NULL);
 451                 if (0 != rc) {
 452                         printk(KERN_DEBUG pr_fmt("videobuf_iolock failed!\n"));
 453                         goto fail;
 454                 }
 455         }
 456
 457         dprintk(1, "init_buffer=%d\n", init_buffer);
 458
 459         if (init_buffer) {
 460
 461                 channel_opened = dev->channel_opened;
 462                 if (channel_opened < 0 || channel_opened > 7)
 463                         channel_opened = 7;
 464
 465                 if (dev->channels[channel_opened].pixel_formats ==
 466                                 PIXEL_FRMT_411)
 467                         buf->bpl = (buf->fmt->depth * buf->vb.width) >> 3;
 468                 else
 469                         buf->bpl = (buf->fmt->depth >> 3) * (buf->vb.width);
 470
 471                 if (dev->channels[channel_opened].pixel_formats ==
 472                                 PIXEL_FRMT_411) {
 473                         bpl_local = buf->bpl;
 474                 } else {
 475                         bpl_local = buf->bpl;   /* Default */
 476
 477                         if (channel_opened >= 0 && channel_opened <= 7) {
 478                                 if (dev->channels[channel_opened]
 479                                                 .use_cif_resolution) {
 480                                         if (dev->tvnorm & V4L2_STD_PAL_BG ||
 481                                             dev->tvnorm & V4L2_STD_PAL_DK)
 482                                                 bpl_local = 352 << 1;
 483                                         else
 484                                                 bpl_local = dev->channels[
 485                                                         channel_opened].
 486                                                         cif_width << 1;
 487                                 }
 488                         }
 489                 }
 490
 491                 switch (buf->vb.field) {
 492                 case V4L2_FIELD_TOP:
 493                         cx25821_risc_buffer(dev->pci, &buf->risc,
 494                                             dma->sglist, 0, UNSET,
 495                                             buf->bpl, 0, buf->vb.height);
 496                         break;
 497                 case V4L2_FIELD_BOTTOM:
 498                         cx25821_risc_buffer(dev->pci, &buf->risc,
 499                                             dma->sglist, UNSET, 0,
 500                                             buf->bpl, 0, buf->vb.height);
 501                         break;
 502                 case V4L2_FIELD_INTERLACED:
 503                         /* All other formats are top field first */
 504                         line0_offset = 0;
 505                         dprintk(1, "top field first\n");
 506
 507                         cx25821_risc_buffer(dev->pci, &buf->risc,
 508                                             dma->sglist, line0_offset,
 509                                             bpl_local, bpl_local, bpl_local,
 510                                             buf->vb.height >> 1);
 511                         break;
 512                 case V4L2_FIELD_SEQ_TB:
 513                         cx25821_risc_buffer(dev->pci, &buf->risc,
 514                                             dma->sglist,
 515                                             0, buf->bpl * (buf->vb.height >> 1),
 516                                             buf->bpl, 0, buf->vb.height >> 1);
 517                         break;
 518                 case V4L2_FIELD_SEQ_BT:
 519                         cx25821_risc_buffer(dev->pci, &buf->risc,
 520                                             dma->sglist,
 521                                             buf->bpl * (buf->vb.height >> 1), 0,
 522                                             buf->bpl, 0, buf->vb.height >> 1);
 523                         break;
 524                 default:
 525                         BUG();
 526                 }
 527         }
 528
 529         dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
 530                 buf, buf->vb.i, fh->width, fh->height, fh->fmt->depth,
 531                 fh->fmt->name, (unsigned long)buf->risc.dma);
 532
 533         buf->vb.state = VIDEOBUF_PREPARED;
 534
 535         return 0;
 536
 537 fail:
 538         cx25821_free_buffer(q, buf);
 539         return rc;
 540 }
 541
 542 static void cx25821_buffer_release(struct videobuf_queue *q,
 543                             struct videobuf_buffer *vb)
 544 {
 545         struct cx25821_buffer *buf =
 546                 container_of(vb, struct cx25821_buffer, vb);
 547
 548         cx25821_free_buffer(q, buf);
 549 }
 550
 551 static struct videobuf_queue *get_queue(struct cx25821_fh *fh)
 552 {
 553         switch (fh->type) {
 554         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 555                 return &fh->vidq;
 556         default:
 557                 BUG();
 558                 return NULL;
 559         }
 560 }
 561
 562 static int cx25821_get_resource(struct cx25821_fh *fh, int resource)
 563 {
 564         switch (fh->type) {
 565         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 566                 return resource;
 567         default:
 568                 BUG();
 569                 return 0;
 570         }
 571 }
 572
 573 static int cx25821_video_mmap(struct file *file, struct vm_area_struct *vma)
 574 {
 575         struct cx25821_fh *fh = file->private_data;
 576
 577         return videobuf_mmap_mapper(get_queue(fh), vma);
 578 }
 579
 580
 581 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 582 {
 583         struct cx25821_buffer *buf =
 584                 container_of(vb, struct cx25821_buffer, vb);
 585         struct cx25821_buffer *prev;
 586         struct cx25821_fh *fh = vq->priv_data;
 587         struct cx25821_dev *dev = fh->dev;
 588         struct cx25821_dmaqueue *q = &dev->channels[fh->channel_id].vidq;
 589
 590         /* add jump to stopper */
 591         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 592         buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
 593         buf->risc.jmp[2] = cpu_to_le32(0);      /* bits 63-32 */
 594
 595         dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]);
 596
 597         if (!list_empty(&q->queued)) {
 598                 list_add_tail(&buf->vb.queue, &q->queued);
 599                 buf->vb.state = VIDEOBUF_QUEUED;
 600                 dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf,
 601                                 buf->vb.i);
 602
 603         } else if (list_empty(&q->active)) {
 604                 list_add_tail(&buf->vb.queue, &q->active);
 605                 cx25821_start_video_dma(dev, q, buf,
 606                                 dev->channels[fh->channel_id].sram_channels);
 607                 buf->vb.state = VIDEOBUF_ACTIVE;
 608                 buf->count = q->count++;
 609                 mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
 610                 dprintk(2, "[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n",
 611                                 buf, buf->vb.i, buf->count, q->count);
 612         } else {
 613                 prev = list_entry(q->active.prev, struct cx25821_buffer,
 614                                 vb.queue);
 615                 if (prev->vb.width == buf->vb.width
 616                    && prev->vb.height == buf->vb.height
 617                    && prev->fmt == buf->fmt) {
 618                         list_add_tail(&buf->vb.queue, &q->active);
 619                         buf->vb.state = VIDEOBUF_ACTIVE;
 620                         buf->count = q->count++;
 621                         prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 622
 623                         /* 64 bit bits 63-32 */
 624                         prev->risc.jmp[2] = cpu_to_le32(0);
 625                         dprintk(2, "[%p/%d] buffer_queue - append to active, buf->count=%d\n",
 626                                         buf, buf->vb.i, buf->count);
 627
 628                 } else {
 629                         list_add_tail(&buf->vb.queue, &q->queued);
 630                         buf->vb.state = VIDEOBUF_QUEUED;
 631                         dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf,
 632                                         buf->vb.i);
 633                 }
 634         }
 635
 636         if (list_empty(&q->active))
 637                 dprintk(2, "active queue empty!\n");
 638 }
 639
 640 static struct videobuf_queue_ops cx25821_video_qops = {
 641         .buf_setup = cx25821_buffer_setup,
 642         .buf_prepare = cx25821_buffer_prepare,
 643         .buf_queue = buffer_queue,
 644         .buf_release = cx25821_buffer_release,
 645 };
 646
 647 static int video_open(struct file *file)
 648 {
 649         struct video_device *vdev = video_devdata(file);
 650         struct cx25821_dev *dev = video_drvdata(file);
 651         struct cx25821_fh *fh;
 652         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 653         u32 pix_format;
 654         int ch_id;
 655
 656         dprintk(1, "open dev=%s type=%s\n", video_device_node_name(vdev),
 657                         v4l2_type_names[type]);
 658
 659         for (ch_id = 0; ch_id < MAX_VID_CHANNEL_NUM - 1; ch_id++)
 660                 if (dev->channels[ch_id].video_dev == vdev)
 661                         break;
 662
 663         /* Can't happen */
 664         if (ch_id >= MAX_VID_CHANNEL_NUM - 1)
 665                 return -ENODEV;
 666
 667         /* allocate + initialize per filehandle data */
 668         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
 669         if (NULL == fh)
 670                 return -ENOMEM;
 671
 672         file->private_data = fh;
 673         fh->dev = dev;
 674         fh->type = type;
 675         fh->width = 720;
 676         fh->channel_id = ch_id;
 677
 678         if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
 679                 fh->height = 576;
 680         else
 681                 fh->height = 480;
 682
 683         dev->channel_opened = fh->channel_id;
 684         if (dev->channels[ch_id].pixel_formats == PIXEL_FRMT_411)
 685                 pix_format = V4L2_PIX_FMT_Y41P;
 686         else
 687                 pix_format = V4L2_PIX_FMT_YUYV;
 688         fh->fmt = cx25821_format_by_fourcc(pix_format);
 689
 690         v4l2_prio_open(&dev->channels[ch_id].prio, &fh->prio);
 691
 692         videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops, &dev->pci->dev,
 693                         &dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
 694                         V4L2_FIELD_INTERLACED, sizeof(struct cx25821_buffer),
 695                         fh, NULL);
 696
 697         dprintk(1, "post videobuf_queue_init()\n");
 698
 699         return 0;
 700 }
 701
 702 static ssize_t video_read(struct file *file, char __user * data, size_t count,
 703                          loff_t *ppos)
 704 {
 705         struct cx25821_fh *fh = file->private_data;
 706
 707         switch (fh->type) {
 708         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 709                 if (cx25821_res_locked(fh, RESOURCE_VIDEO0))
 710                         return -EBUSY;
 711
 712                 return videobuf_read_one(&fh->vidq, data, count, ppos,
 713                                         file->f_flags & O_NONBLOCK);
 714
 715         default:
 716                 BUG();
 717                 return 0;
 718         }
 719 }
 720
 721 static unsigned int video_poll(struct file *file,
 722                               struct poll_table_struct *wait)
 723 {
 724         struct cx25821_fh *fh = file->private_data;
 725         struct cx25821_buffer *buf;
 726
 727         if (cx25821_res_check(fh, RESOURCE_VIDEO0)) {
 728                 /* streaming capture */
 729                 if (list_empty(&fh->vidq.stream))
 730                         return POLLERR;
 731                 buf = list_entry(fh->vidq.stream.next,
 732                                 struct cx25821_buffer, vb.stream);
 733         } else {
 734                 /* read() capture */
 735                 buf = (struct cx25821_buffer *)fh->vidq.read_buf;
 736                 if (NULL == buf)
 737                         return POLLERR;
 738         }
 739
 740         poll_wait(file, &buf->vb.done, wait);
 741         if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR) {
 742                 if (buf->vb.state == VIDEOBUF_DONE) {
 743                         struct cx25821_dev *dev = fh->dev;
 744
 745                         if (dev && dev->channels[fh->channel_id]
 746                                         .use_cif_resolution) {
 747                                 u8 cam_id = *((char *)buf->vb.baddr + 3);
 748                                 memcpy((char *)buf->vb.baddr,
 749                                       (char *)buf->vb.baddr + (fh->width * 2),
 750                                       (fh->width * 2));
 751                                 *((char *)buf->vb.baddr + 3) = cam_id;
 752                         }
 753                 }
 754
 755                 return POLLIN | POLLRDNORM;
 756         }
 757
 758         return 0;
 759 }
 760
 761 static int video_release(struct file *file)
 762 {
 763         struct cx25821_fh *fh = file->private_data;
 764         struct cx25821_dev *dev = fh->dev;
 765         const struct sram_channel *sram_ch =
 766                 dev->channels[0].sram_channels;
 767
 768         /* stop the risc engine and fifo */
 769         cx_write(sram_ch->dma_ctl, 0); /* FIFO and RISC disable */
 770
 771         /* stop video capture */
 772         if (cx25821_res_check(fh, RESOURCE_VIDEO0)) {
 773                 videobuf_queue_cancel(&fh->vidq);
 774                 cx25821_res_free(dev, fh, RESOURCE_VIDEO0);
 775         }
 776
 777         if (fh->vidq.read_buf) {
 778                 cx25821_buffer_release(&fh->vidq, fh->vidq.read_buf);
 779                 kfree(fh->vidq.read_buf);
 780         }
 781
 782         videobuf_mmap_free(&fh->vidq);
 783
 784         v4l2_prio_close(&dev->channels[fh->channel_id].prio, fh->prio);
 785         file->private_data = NULL;
 786         kfree(fh);
 787
 788         return 0;
 789 }
 790
 791 /* VIDEO IOCTLS */
 792 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 793                                  struct v4l2_format *f)
 794 {
 795         struct cx25821_fh *fh = priv;
 796
 797         f->fmt.pix.width = fh->width;
 798         f->fmt.pix.height = fh->height;
 799         f->fmt.pix.field = fh->vidq.field;
 800         f->fmt.pix.pixelformat = fh->fmt->fourcc;
 801         f->fmt.pix.bytesperline = (f->fmt.pix.width * fh->fmt->depth) >> 3;
 802         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 803
 804         return 0;
 805 }
 806
 807 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 808                                    struct v4l2_format *f)
 809 {
 810         const struct cx25821_fmt *fmt;
 811         enum v4l2_field field;
 812         unsigned int maxw, maxh;
 813
 814         fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 815         if (NULL == fmt)
 816                 return -EINVAL;
 817
 818         field = f->fmt.pix.field;
 819         maxw = 720;
 820         maxh = 576;
 821
 822         if (V4L2_FIELD_ANY == field) {
 823                 if (f->fmt.pix.height > maxh / 2)
 824                         field = V4L2_FIELD_INTERLACED;
 825                 else
 826                         field = V4L2_FIELD_TOP;
 827         }
 828
 829         switch (field) {
 830         case V4L2_FIELD_TOP:
 831         case V4L2_FIELD_BOTTOM:
 832                 maxh = maxh / 2;
 833                 break;
 834         case V4L2_FIELD_INTERLACED:
 835                 break;
 836         default:
 837                 return -EINVAL;
 838         }
 839
 840         f->fmt.pix.field = field;
 841         if (f->fmt.pix.height < 32)
 842                 f->fmt.pix.height = 32;
 843         if (f->fmt.pix.height > maxh)
 844                 f->fmt.pix.height = maxh;
 845         if (f->fmt.pix.width < 48)
 846                 f->fmt.pix.width = 48;
 847         if (f->fmt.pix.width > maxw)
 848                 f->fmt.pix.width = maxw;
 849         f->fmt.pix.width &= ~0x03;
 850         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 851         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 852
 853         return 0;
 854 }
 855 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 856 {
 857         struct cx25821_fh *fh = priv;
 858         struct cx25821_dev *dev = fh->dev;
 859
 860         if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
 861                 return -EINVAL;
 862
 863         if (unlikely(i != fh->type))
 864                 return -EINVAL;
 865
 866         if (unlikely(!cx25821_res_get(dev, fh, cx25821_get_resource(fh,
 867                                                 RESOURCE_VIDEO0))))
 868                 return -EBUSY;
 869
 870         return videobuf_streamon(get_queue(fh));
 871 }
 872
 873 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 874 {
 875         struct cx25821_fh *fh = priv;
 876         struct cx25821_dev *dev = fh->dev;
 877         int err, res;
 878
 879         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 880                 return -EINVAL;
 881         if (i != fh->type)
 882                 return -EINVAL;
 883
 884         res = cx25821_get_resource(fh, RESOURCE_VIDEO0);
 885         err = videobuf_streamoff(get_queue(fh));
 886         if (err < 0)
 887                 return err;
 888         cx25821_res_free(dev, fh, res);
 889         return 0;
 890 }
 891
 892 static int cx25821_is_valid_width(u32 width, v4l2_std_id tvnorm)
 893 {
 894         if (tvnorm == V4L2_STD_PAL_BG) {
 895                 if (width == 352 || width == 720)
 896                         return 1;
 897                 else
 898                         return 0;
 899         }
 900
 901         if (tvnorm == V4L2_STD_NTSC_M) {
 902                 if (width == 320 || width == 352 || width == 720)
 903                         return 1;
 904                 else
 905                         return 0;
 906         }
 907         return 0;
 908 }
 909
 910 static int cx25821_is_valid_height(u32 height, v4l2_std_id tvnorm)
 911 {
 912         if (tvnorm == V4L2_STD_PAL_BG) {
 913                 if (height == 576 || height == 288)
 914                         return 1;
 915                 else
 916                         return 0;
 917         }
 918
 919         if (tvnorm == V4L2_STD_NTSC_M) {
 920                 if (height == 480 || height == 240)
 921                         return 1;
 922                 else
 923                         return 0;
 924         }
 925
 926         return 0;
 927 }
 928
 929 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 930                                 struct v4l2_format *f)
 931 {
 932         struct cx25821_fh *fh = priv;
 933         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
 934         struct v4l2_mbus_framefmt mbus_fmt;
 935         int err;
 936         int pix_format = PIXEL_FRMT_422;
 937
 938         if (fh) {
 939                 err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
 940                                       fh->prio);
 941                 if (0 != err)
 942                         return err;
 943         }
 944
 945         dprintk(2, "%s()\n", __func__);
 946         err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
 947
 948         if (0 != err)
 949                 return err;
 950
 951         fh->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 952         fh->vidq.field = f->fmt.pix.field;
 953
 954         /* check if width and height is valid based on set standard */
 955         if (cx25821_is_valid_width(f->fmt.pix.width, dev->tvnorm))
 956                 fh->width = f->fmt.pix.width;
 957
 958         if (cx25821_is_valid_height(f->fmt.pix.height, dev->tvnorm))
 959                 fh->height = f->fmt.pix.height;
 960
 961         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
 962                 pix_format = PIXEL_FRMT_411;
 963         else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
 964                 pix_format = PIXEL_FRMT_422;
 965         else
 966                 return -EINVAL;
 967
 968         cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
 969
 970         /* check if cif resolution */
 971         if (fh->width == 320 || fh->width == 352)
 972                 dev->channels[fh->channel_id].use_cif_resolution = 1;
 973         else
 974                 dev->channels[fh->channel_id].use_cif_resolution = 0;
 975
 976         dev->channels[fh->channel_id].cif_width = fh->width;
 977         medusa_set_resolution(dev, fh->width, SRAM_CH00);
 978
 979         dprintk(2, "%s(): width=%d height=%d field=%d\n", __func__, fh->width,
 980                 fh->height, fh->vidq.field);
 981         v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
 982         cx25821_call_all(dev, video, s_mbus_fmt, &mbus_fmt);
 983
 984         return 0;
 985 }
 986
 987 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
 988 {
 989         int ret_val = 0;
 990         struct cx25821_fh *fh = priv;
 991         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
 992
 993         ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
 994
 995         p->sequence = dev->channels[fh->channel_id].vidq.count;
 996
 997         return ret_val;
 998 }
 999
1000 static int vidioc_log_status(struct file *file, void *priv)
1001 {
1002         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1003         struct cx25821_fh *fh = priv;
1004         const struct sram_channel *sram_ch =
1005                 dev->channels[fh->channel_id].sram_channels;
1006         u32 tmp = 0;
1007
1008         cx25821_call_all(dev, core, log_status);
1009         tmp = cx_read(sram_ch->dma_ctl);
1010         pr_info("Video input 0 is %s\n",
1011                 (tmp & 0x11) ? "streaming" : "stopped");
1012         return 0;
1013 }
1014
1015
1016 static int cx25821_vidioc_querycap(struct file *file, void *priv,
1017                             struct v4l2_capability *cap)
1018 {
1019         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1020         struct cx25821_fh *fh = priv;
1021         const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
1022                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1023         const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT;
1024
1025         strcpy(cap->driver, "cx25821");
1026         strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
1027         sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
1028         if (fh->channel_id >= VID_CHANNEL_NUM)
1029                 cap->device_caps = cap_output;
1030         else
1031                 cap->device_caps = cap_input;
1032         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1033         return 0;
1034 }
1035
1036 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1037                             struct v4l2_fmtdesc *f)
1038 {
1039         if (unlikely(f->index >= ARRAY_SIZE(formats)))
1040                 return -EINVAL;
1041
1042         strlcpy(f->description, formats[f->index].name, sizeof(f->description));
1043         f->pixelformat = formats[f->index].fourcc;
1044
1045         return 0;
1046 }
1047
1048 static int cx25821_vidioc_reqbufs(struct file *file, void *priv,
1049                            struct v4l2_requestbuffers *p)
1050 {
1051         struct cx25821_fh *fh = priv;
1052         return videobuf_reqbufs(get_queue(fh), p);
1053 }
1054
1055 static int cx25821_vidioc_querybuf(struct file *file, void *priv,
1056                             struct v4l2_buffer *p)
1057 {
1058         struct cx25821_fh *fh = priv;
1059         return videobuf_querybuf(get_queue(fh), p);
1060 }
1061
1062 static int cx25821_vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1063 {
1064         struct cx25821_fh *fh = priv;
1065         return videobuf_qbuf(get_queue(fh), p);
1066 }
1067
1068 static int cx25821_vidioc_g_priority(struct file *file, void *f, enum v4l2_priority *p)
1069 {
1070         struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev;
1071         struct cx25821_fh *fh = f;
1072
1073         *p = v4l2_prio_max(&dev->channels[fh->channel_id].prio);
1074
1075         return 0;
1076 }
1077
1078 static int cx25821_vidioc_s_priority(struct file *file, void *f,
1079                               enum v4l2_priority prio)
1080 {
1081         struct cx25821_fh *fh = f;
1082         struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev;
1083
1084         return v4l2_prio_change(&dev->channels[fh->channel_id].prio, &fh->prio,
1085                         prio);
1086 }
1087
1088 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
1089 {
1090         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1091
1092         *tvnorms = dev->tvnorm;
1093         return 0;
1094 }
1095
1096 int cx25821_vidioc_s_std(struct file *file, void *priv, v4l2_std_id tvnorms)
1097 {
1098         struct cx25821_fh *fh = priv;
1099         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1100         int err;
1101
1102         dprintk(1, "%s()\n", __func__);
1103
1104         if (fh) {
1105                 err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
1106                                       fh->prio);
1107                 if (0 != err)
1108                         return err;
1109         }
1110
1111         if (dev->tvnorm == tvnorms)
1112                 return 0;
1113
1114         mutex_lock(&dev->lock);
1115         cx25821_set_tvnorm(dev, tvnorms);
1116         mutex_unlock(&dev->lock);
1117
1118         medusa_set_videostandard(dev);
1119
1120         return 0;
1121 }
1122
1123 static int cx25821_vidioc_enum_input(struct file *file, void *priv,
1124                               struct v4l2_input *i)
1125 {
1126         static const char * const iname[] = {
1127                 [CX25821_VMUX_COMPOSITE] = "Composite",
1128                 [CX25821_VMUX_SVIDEO] = "S-Video",
1129                 [CX25821_VMUX_DEBUG] = "for debug only",
1130         };
1131         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1132         unsigned int n;
1133         dprintk(1, "%s()\n", __func__);
1134
1135         n = i->index;
1136         if (n >= CX25821_NR_INPUT)
1137                 return -EINVAL;
1138
1139         if (0 == INPUT(n)->type)
1140                 return -EINVAL;
1141
1142         i->type = V4L2_INPUT_TYPE_CAMERA;
1143         strcpy(i->name, iname[INPUT(n)->type]);
1144
1145         i->std = CX25821_NORMS;
1146         return 0;
1147 }
1148
1149 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1150 {
1151         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1152
1153         *i = dev->input;
1154         dprintk(1, "%s(): returns %d\n", __func__, *i);
1155         return 0;
1156 }
1157
1158 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
1159 {
1160         struct cx25821_fh *fh = priv;
1161         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1162         int err;
1163
1164         dprintk(1, "%s(%d)\n", __func__, i);
1165
1166         if (fh) {
1167                 err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
1168                                       fh->prio);
1169                 if (0 != err)
1170                         return err;
1171         }
1172
1173         if (i >= CX25821_NR_INPUT || INPUT(i)->type == 0)
1174                 return -EINVAL;
1175
1176         mutex_lock(&dev->lock);
1177         cx25821_video_mux(dev, i);
1178         mutex_unlock(&dev->lock);
1179         return 0;
1180 }
1181
1182 #ifdef CONFIG_VIDEO_ADV_DEBUG
1183 int cx25821_vidioc_g_register(struct file *file, void *fh,
1184                       struct v4l2_dbg_register *reg)
1185 {
1186         struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev;
1187
1188         if (!v4l2_chip_match_host(&reg->match))
1189                 return -EINVAL;
1190
1191         cx25821_call_all(dev, core, g_register, reg);
1192
1193         return 0;
1194 }
1195
1196 int cx25821_vidioc_s_register(struct file *file, void *fh,
1197                       const struct v4l2_dbg_register *reg)
1198 {
1199         struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev;
1200
1201         if (!v4l2_chip_match_host(&reg->match))
1202                 return -EINVAL;
1203
1204         cx25821_call_all(dev, core, s_register, reg);
1205
1206         return 0;
1207 }
1208
1209 #endif
1210
1211 /*****************************************************************************/
1212 static const struct v4l2_queryctrl no_ctl = {
1213         .name = "42",
1214         .flags = V4L2_CTRL_FLAG_DISABLED,
1215 };
1216
1217 static struct v4l2_queryctrl cx25821_ctls[] = {
1218         /* --- video --- */
1219         {
1220                 .id = V4L2_CID_BRIGHTNESS,
1221                 .name = "Brightness",
1222                 .minimum = 0,
1223                 .maximum = 10000,
1224                 .step = 1,
1225                 .default_value = 6200,
1226                 .type = V4L2_CTRL_TYPE_INTEGER,
1227         }, {
1228                 .id = V4L2_CID_CONTRAST,
1229                 .name = "Contrast",
1230                 .minimum = 0,
1231                 .maximum = 10000,
1232                 .step = 1,
1233                 .default_value = 5000,
1234                 .type = V4L2_CTRL_TYPE_INTEGER,
1235         }, {
1236                 .id = V4L2_CID_SATURATION,
1237                 .name = "Saturation",
1238                 .minimum = 0,
1239                 .maximum = 10000,
1240                 .step = 1,
1241                 .default_value = 5000,
1242                 .type = V4L2_CTRL_TYPE_INTEGER,
1243         }, {
1244                 .id = V4L2_CID_HUE,
1245                 .name = "Hue",
1246                 .minimum = 0,
1247                 .maximum = 10000,
1248                 .step = 1,
1249                 .default_value = 5000,
1250                 .type = V4L2_CTRL_TYPE_INTEGER,
1251         }
1252 };
1253 static const int CX25821_CTLS = ARRAY_SIZE(cx25821_ctls);
1254
1255 static int cx25821_ctrl_query(struct v4l2_queryctrl *qctrl)
1256 {
1257         int i;
1258
1259         if (qctrl->id < V4L2_CID_BASE || qctrl->id >= V4L2_CID_LASTP1)
1260                 return -EINVAL;
1261         for (i = 0; i < CX25821_CTLS; i++)
1262                 if (cx25821_ctls[i].id == qctrl->id)
1263                         break;
1264         if (i == CX25821_CTLS) {
1265                 *qctrl = no_ctl;
1266                 return 0;
1267         }
1268         *qctrl = cx25821_ctls[i];
1269         return 0;
1270 }
1271
1272 static int cx25821_vidioc_queryctrl(struct file *file, void *priv,
1273                      struct v4l2_queryctrl *qctrl)
1274 {
1275         return cx25821_ctrl_query(qctrl);
1276 }
1277
1278 /* ------------------------------------------------------------------ */
1279 /* VIDEO CTRL IOCTLS                                                  */
1280
1281 static const struct v4l2_queryctrl *ctrl_by_id(unsigned int id)
1282 {
1283         unsigned int i;
1284
1285         for (i = 0; i < CX25821_CTLS; i++)
1286                 if (cx25821_ctls[i].id == id)
1287                         return cx25821_ctls + i;
1288         return NULL;
1289 }
1290
1291 static int cx25821_vidioc_g_ctrl(struct file *file, void *priv,
1292                           struct v4l2_control *ctl)
1293 {
1294         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1295         struct cx25821_fh *fh = priv;
1296
1297         const struct v4l2_queryctrl *ctrl;
1298
1299         ctrl = ctrl_by_id(ctl->id);
1300
1301         if (NULL == ctrl)
1302                 return -EINVAL;
1303         switch (ctl->id) {
1304         case V4L2_CID_BRIGHTNESS:
1305                 ctl->value = dev->channels[fh->channel_id].ctl_bright;
1306                 break;
1307         case V4L2_CID_HUE:
1308                 ctl->value = dev->channels[fh->channel_id].ctl_hue;
1309                 break;
1310         case V4L2_CID_CONTRAST:
1311                 ctl->value = dev->channels[fh->channel_id].ctl_contrast;
1312                 break;
1313         case V4L2_CID_SATURATION:
1314                 ctl->value = dev->channels[fh->channel_id].ctl_saturation;
1315                 break;
1316         }
1317         return 0;
1318 }
1319
1320 static int cx25821_set_control(struct cx25821_dev *dev,
1321                         struct v4l2_control *ctl, int chan_num)
1322 {
1323         int err;
1324         const struct v4l2_queryctrl *ctrl;
1325
1326         err = -EINVAL;
1327
1328         ctrl = ctrl_by_id(ctl->id);
1329
1330         if (NULL == ctrl)
1331                 return err;
1332
1333         switch (ctrl->type) {
1334         case V4L2_CTRL_TYPE_BOOLEAN:
1335         case V4L2_CTRL_TYPE_MENU:
1336         case V4L2_CTRL_TYPE_INTEGER:
1337                 if (ctl->value < ctrl->minimum)
1338                         ctl->value = ctrl->minimum;
1339                 if (ctl->value > ctrl->maximum)
1340                         ctl->value = ctrl->maximum;
1341                 break;
1342         default:
1343                 /* nothing */ ;
1344         }
1345
1346         switch (ctl->id) {
1347         case V4L2_CID_BRIGHTNESS:
1348                 dev->channels[chan_num].ctl_bright = ctl->value;
1349                 medusa_set_brightness(dev, ctl->value, chan_num);
1350                 break;
1351         case V4L2_CID_HUE:
1352                 dev->channels[chan_num].ctl_hue = ctl->value;
1353                 medusa_set_hue(dev, ctl->value, chan_num);
1354                 break;
1355         case V4L2_CID_CONTRAST:
1356                 dev->channels[chan_num].ctl_contrast = ctl->value;
1357                 medusa_set_contrast(dev, ctl->value, chan_num);
1358                 break;
1359         case V4L2_CID_SATURATION:
1360                 dev->channels[chan_num].ctl_saturation = ctl->value;
1361                 medusa_set_saturation(dev, ctl->value, chan_num);
1362                 break;
1363         }
1364
1365         err = 0;
1366
1367         return err;
1368 }
1369
1370 static int vidioc_s_ctrl(struct file *file, void *priv,
1371                         struct v4l2_control *ctl)
1372 {
1373         struct cx25821_fh *fh = priv;
1374         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1375         int err;
1376
1377         if (fh) {
1378                 err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
1379                                       fh->prio);
1380                 if (0 != err)
1381                         return err;
1382         }
1383
1384         return cx25821_set_control(dev, ctl, fh->channel_id);
1385 }
1386
1387 static void cx25821_init_controls(struct cx25821_dev *dev, int chan_num)
1388 {
1389         struct v4l2_control ctrl;
1390         int i;
1391         for (i = 0; i < CX25821_CTLS; i++) {
1392                 ctrl.id = cx25821_ctls[i].id;
1393                 ctrl.value = cx25821_ctls[i].default_value;
1394
1395                 cx25821_set_control(dev, &ctrl, chan_num);
1396         }
1397 }
1398
1399 static int cx25821_vidioc_cropcap(struct file *file, void *priv,
1400                            struct v4l2_cropcap *cropcap)
1401 {
1402         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1403
1404         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1405                 return -EINVAL;
1406         cropcap->bounds.top = 0;
1407         cropcap->bounds.left = 0;
1408         cropcap->bounds.width = 720;
1409         cropcap->bounds.height = dev->tvnorm == V4L2_STD_PAL_BG ? 576 : 480;
1410         cropcap->pixelaspect.numerator =
1411                 dev->tvnorm == V4L2_STD_PAL_BG ? 59 : 10;
1412         cropcap->pixelaspect.denominator =
1413                 dev->tvnorm == V4L2_STD_PAL_BG ? 54 : 11;
1414         cropcap->defrect = cropcap->bounds;
1415         return 0;
1416 }
1417
1418 static int cx25821_vidioc_s_crop(struct file *file, void *priv, const struct v4l2_crop *crop)
1419 {
1420         struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
1421         struct cx25821_fh *fh = priv;
1422         int err;
1423
1424         if (fh) {
1425                 err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
1426                                       fh->prio);
1427                 if (0 != err)
1428                         return err;
1429         }
1430         /* cx25821_vidioc_s_crop not supported */
1431         return -EINVAL;
1432 }
1433
1434 static int cx25821_vidioc_g_crop(struct file *file, void *priv, struct v4l2_crop *crop)
1435 {
1436         /* cx25821_vidioc_g_crop not supported */
1437         return -EINVAL;
1438 }
1439
1440 static long video_ioctl_upstream9(struct file *file, unsigned int cmd,
1441                                  unsigned long arg)
1442 {
1443         struct cx25821_fh *fh = file->private_data;
1444         struct cx25821_dev *dev = fh->dev;
1445         int command = 0;
1446         struct upstream_user_struct *data_from_user;
1447
1448         data_from_user = (struct upstream_user_struct *)arg;
1449
1450         if (!data_from_user) {
1451                 pr_err("%s(): Upstream data is INVALID. Returning\n", __func__);
1452                 return 0;
1453         }
1454
1455         command = data_from_user->command;
1456
1457         if (command != UPSTREAM_START_VIDEO && command != UPSTREAM_STOP_VIDEO)
1458                 return 0;
1459
1460         dev->input_filename = data_from_user->input_filename;
1461         dev->input_audiofilename = data_from_user->input_filename;
1462         dev->vid_stdname = data_from_user->vid_stdname;
1463         dev->pixel_format = data_from_user->pixel_format;
1464         dev->channel_select = data_from_user->channel_select;
1465         dev->command = data_from_user->command;
1466
1467         switch (command) {
1468         case UPSTREAM_START_VIDEO:
1469                 cx25821_start_upstream_video_ch1(dev, data_from_user);
1470                 break;
1471
1472         case UPSTREAM_STOP_VIDEO:
1473                 cx25821_stop_upstream_video_ch1(dev);
1474                 break;
1475         }
1476
1477         return 0;
1478 }
1479
1480 static long video_ioctl_upstream10(struct file *file, unsigned int cmd,
1481                                   unsigned long arg)
1482 {
1483         struct cx25821_fh *fh = file->private_data;
1484         struct cx25821_dev *dev = fh->dev;
1485         int command = 0;
1486         struct upstream_user_struct *data_from_user;
1487
1488         data_from_user = (struct upstream_user_struct *)arg;
1489
1490         if (!data_from_user) {
1491                 pr_err("%s(): Upstream data is INVALID. Returning\n", __func__);
1492                 return 0;
1493         }
1494
1495         command = data_from_user->command;
1496
1497         if (command != UPSTREAM_START_VIDEO && command != UPSTREAM_STOP_VIDEO)
1498                 return 0;
1499
1500         dev->input_filename_ch2 = data_from_user->input_filename;
1501         dev->input_audiofilename = data_from_user->input_filename;
1502         dev->vid_stdname_ch2 = data_from_user->vid_stdname;
1503         dev->pixel_format_ch2 = data_from_user->pixel_format;
1504         dev->channel_select_ch2 = data_from_user->channel_select;
1505         dev->command_ch2 = data_from_user->command;
1506
1507         switch (command) {
1508         case UPSTREAM_START_VIDEO:
1509                 cx25821_start_upstream_video_ch2(dev, data_from_user);
1510                 break;
1511
1512         case UPSTREAM_STOP_VIDEO:
1513                 cx25821_stop_upstream_video_ch2(dev);
1514                 break;
1515         }
1516
1517         return 0;
1518 }
1519
1520 static long video_ioctl_upstream11(struct file *file, unsigned int cmd,
1521                                   unsigned long arg)
1522 {
1523         struct cx25821_fh *fh = file->private_data;
1524         struct cx25821_dev *dev = fh->dev;
1525         int command = 0;
1526         struct upstream_user_struct *data_from_user;
1527
1528         data_from_user = (struct upstream_user_struct *)arg;
1529
1530         if (!data_from_user) {
1531                 pr_err("%s(): Upstream data is INVALID. Returning\n", __func__);
1532                 return 0;
1533         }
1534
1535         command = data_from_user->command;
1536
1537         if (command != UPSTREAM_START_AUDIO && command != UPSTREAM_STOP_AUDIO)
1538                 return 0;
1539
1540         dev->input_filename = data_from_user->input_filename;
1541         dev->input_audiofilename = data_from_user->input_filename;
1542         dev->vid_stdname = data_from_user->vid_stdname;
1543         dev->pixel_format = data_from_user->pixel_format;
1544         dev->channel_select = data_from_user->channel_select;
1545         dev->command = data_from_user->command;
1546
1547         switch (command) {
1548         case UPSTREAM_START_AUDIO:
1549                 cx25821_start_upstream_audio(dev, data_from_user);
1550                 break;
1551
1552         case UPSTREAM_STOP_AUDIO:
1553                 cx25821_stop_upstream_audio(dev);
1554                 break;
1555         }
1556
1557         return 0;
1558 }
1559
1560 static long video_ioctl_set(struct file *file, unsigned int cmd,
1561                            unsigned long arg)
1562 {
1563         struct cx25821_fh *fh = file->private_data;
1564         struct cx25821_dev *dev = fh->dev;
1565         struct downstream_user_struct *data_from_user;
1566         int command;
1567         int width = 720;
1568         int selected_channel = 0;
1569         int pix_format = 0;
1570         int i = 0;
1571         int cif_enable = 0;
1572         int cif_width = 0;
1573
1574         data_from_user = (struct downstream_user_struct *)arg;
1575
1576         if (!data_from_user) {
1577                 pr_err("%s(): User data is INVALID. Returning\n", __func__);
1578                 return 0;
1579         }
1580
1581         command = data_from_user->command;
1582
1583         if (command != SET_VIDEO_STD && command != SET_PIXEL_FORMAT
1584            && command != ENABLE_CIF_RESOLUTION && command != REG_READ
1585            && command != REG_WRITE && command != MEDUSA_READ
1586            && command != MEDUSA_WRITE) {
1587                 return 0;
1588         }
1589
1590         switch (command) {
1591         case SET_VIDEO_STD:
1592                 if (!strcmp(data_from_user->vid_stdname, "PAL"))
1593                         dev->tvnorm = V4L2_STD_PAL_BG;
1594                 else
1595                         dev->tvnorm = V4L2_STD_NTSC_M;
1596                 medusa_set_videostandard(dev);
1597                 break;
1598
1599         case SET_PIXEL_FORMAT:
1600                 selected_channel = data_from_user->decoder_select;
1601                 pix_format = data_from_user->pixel_format;
1602
1603                 if (!(selected_channel <= 7 && selected_channel >= 0)) {
1604                         selected_channel -= 4;
1605                         selected_channel = selected_channel % 8;
1606                 }
1607
1608                 if (selected_channel >= 0)
1609                         cx25821_set_pixel_format(dev, selected_channel,
1610                                                 pix_format);
1611
1612                 break;
1613
1614         case ENABLE_CIF_RESOLUTION:
1615                 selected_channel = data_from_user->decoder_select;
1616                 cif_enable = data_from_user->cif_resolution_enable;
1617                 cif_width = data_from_user->cif_width;
1618
1619                 if (cif_enable) {
1620                         if (dev->tvnorm & V4L2_STD_PAL_BG
1621                             || dev->tvnorm & V4L2_STD_PAL_DK) {
1622                                 width = 352;
1623                         } else {
1624                                 width = cif_width;
1625                                 if (cif_width != 320 && cif_width != 352)
1626                                         width = 320;
1627                         }
1628                 }
1629
1630                 if (!(selected_channel <= 7 && selected_channel >= 0)) {
1631                         selected_channel -= 4;
1632                         selected_channel = selected_channel % 8;
1633                 }
1634
1635                 if (selected_channel <= 7 && selected_channel >= 0) {
1636                         dev->channels[selected_channel].use_cif_resolution =
1637                                 cif_enable;
1638                         dev->channels[selected_channel].cif_width = width;
1639                 } else {
1640                         for (i = 0; i < VID_CHANNEL_NUM; i++) {
1641                                 dev->channels[i].use_cif_resolution =
1642                                         cif_enable;
1643                                 dev->channels[i].cif_width = width;
1644                         }
1645                 }
1646
1647                 medusa_set_resolution(dev, width, selected_channel);
1648                 break;
1649         case REG_READ:
1650                 data_from_user->reg_data = cx_read(data_from_user->reg_address);
1651                 break;
1652         case REG_WRITE:
1653                 cx_write(data_from_user->reg_address, data_from_user->reg_data);
1654                 break;
1655         case MEDUSA_READ:
1656                 cx25821_i2c_read(&dev->i2c_bus[0],
1657                                          (u16) data_from_user->reg_address,
1658                                          &data_from_user->reg_data);
1659                 break;
1660         case MEDUSA_WRITE:
1661                 cx25821_i2c_write(&dev->i2c_bus[0],
1662                                   (u16) data_from_user->reg_address,
1663                                   data_from_user->reg_data);
1664                 break;
1665         }
1666
1667         return 0;
1668 }
1669
1670 static long cx25821_video_ioctl(struct file *file,
1671                                 unsigned int cmd, unsigned long arg)
1672 {
1673         int ret = 0;
1674
1675         struct cx25821_fh *fh = file->private_data;
1676
1677         /* check to see if it's the video upstream */
1678         if (fh->channel_id == SRAM_CH09) {
1679                 ret = video_ioctl_upstream9(file, cmd, arg);
1680                 return ret;
1681         } else if (fh->channel_id == SRAM_CH10) {
1682                 ret = video_ioctl_upstream10(file, cmd, arg);
1683                 return ret;
1684         } else if (fh->channel_id == SRAM_CH11) {
1685                 ret = video_ioctl_upstream11(file, cmd, arg);
1686                 ret = video_ioctl_set(file, cmd, arg);
1687                 return ret;
1688         }
1689
1690         return video_ioctl2(file, cmd, arg);
1691 }
1692
1693 /* exported stuff */
1694 static const struct v4l2_file_operations video_fops = {
1695         .owner = THIS_MODULE,
1696         .open = video_open,
1697         .release = video_release,
1698         .read = video_read,
1699         .poll = video_poll,
1700         .mmap = cx25821_video_mmap,
1701         .ioctl = cx25821_video_ioctl,
1702 };
1703
1704 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1705         .vidioc_querycap = cx25821_vidioc_querycap,
1706         .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
1707         .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
1708         .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
1709         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1710         .vidioc_reqbufs = cx25821_vidioc_reqbufs,
1711         .vidioc_querybuf = cx25821_vidioc_querybuf,
1712         .vidioc_qbuf = cx25821_vidioc_qbuf,
1713         .vidioc_dqbuf = vidioc_dqbuf,
1714         .vidioc_g_std = cx25821_vidioc_g_std,
1715         .vidioc_s_std = cx25821_vidioc_s_std,
1716         .vidioc_cropcap = cx25821_vidioc_cropcap,
1717         .vidioc_s_crop = cx25821_vidioc_s_crop,
1718         .vidioc_g_crop = cx25821_vidioc_g_crop,
1719         .vidioc_enum_input = cx25821_vidioc_enum_input,
1720         .vidioc_g_input = cx25821_vidioc_g_input,
1721         .vidioc_s_input = cx25821_vidioc_s_input,
1722         .vidioc_g_ctrl = cx25821_vidioc_g_ctrl,
1723         .vidioc_s_ctrl = vidioc_s_ctrl,
1724         .vidioc_queryctrl = cx25821_vidioc_queryctrl,
1725         .vidioc_streamon = vidioc_streamon,
1726         .vidioc_streamoff = vidioc_streamoff,
1727         .vidioc_log_status = vidioc_log_status,
1728         .vidioc_g_priority = cx25821_vidioc_g_priority,
1729         .vidioc_s_priority = cx25821_vidioc_s_priority,
1730 #ifdef CONFIG_VIDEO_ADV_DEBUG
1731         .vidioc_g_register = cx25821_vidioc_g_register,
1732         .vidioc_s_register = cx25821_vidioc_s_register,
1733 #endif
1734 };
1735
1736 static const struct video_device cx25821_video_device = {
1737         .name = "cx25821-video",
1738         .fops = &video_fops,
1739         .minor = -1,
1740         .ioctl_ops = &video_ioctl_ops,
1741         .tvnorms = CX25821_NORMS,
1742 };
1743
1744 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
1745 {
1746         cx_clear(PCI_INT_MSK, 1);
1747
1748         if (dev->channels[chan_num].video_dev) {
1749                 if (video_is_registered(dev->channels[chan_num].video_dev))
1750                         video_unregister_device(
1751                                         dev->channels[chan_num].video_dev);
1752                 else
1753                         video_device_release(
1754                                         dev->channels[chan_num].video_dev);
1755
1756                 dev->channels[chan_num].video_dev = NULL;
1757
1758                 btcx_riscmem_free(dev->pci,
1759                                 &dev->channels[chan_num].vidq.stopper);
1760
1761                 pr_warn("device %d released!\n", chan_num);
1762         }
1763
1764 }
1765
1766 int cx25821_video_register(struct cx25821_dev *dev)
1767 {
1768         int err;
1769         int i;
1770
1771         spin_lock_init(&dev->slock);
1772
1773         for (i = 0; i < VID_CHANNEL_NUM; ++i) {
1774                 if (i == SRAM_CH08) /* audio channel */
1775                         continue;
1776
1777                 cx25821_init_controls(dev, i);
1778
1779                 cx25821_risc_stopper(dev->pci, &dev->channels[i].vidq.stopper,
1780                         dev->channels[i].sram_channels->dma_ctl, 0x11, 0);
1781
1782                 dev->channels[i].sram_channels = &cx25821_sram_channels[i];
1783                 dev->channels[i].video_dev = NULL;
1784                 dev->channels[i].resources = 0;
1785
1786                 cx_write(dev->channels[i].sram_channels->int_stat, 0xffffffff);
1787
1788                 INIT_LIST_HEAD(&dev->channels[i].vidq.active);
1789                 INIT_LIST_HEAD(&dev->channels[i].vidq.queued);
1790
1791                 dev->channels[i].timeout_data.dev = dev;
1792                 dev->channels[i].timeout_data.channel =
1793                         &cx25821_sram_channels[i];
1794                 dev->channels[i].vidq.timeout.function = cx25821_vid_timeout;
1795                 dev->channels[i].vidq.timeout.data =
1796                         (unsigned long)&dev->channels[i].timeout_data;
1797                 init_timer(&dev->channels[i].vidq.timeout);
1798
1799                 /* register v4l devices */
1800                 dev->channels[i].video_dev = cx25821_vdev_init(dev, dev->pci,
1801                                 &cx25821_video_device, "video");
1802
1803                 err = video_register_device(dev->channels[i].video_dev,
1804                                 VFL_TYPE_GRABBER, video_nr[dev->nr]);
1805
1806                 if (err < 0)
1807                         goto fail_unreg;
1808
1809         }
1810
1811         /* set PCI interrupt */
1812         cx_set(PCI_INT_MSK, 0xff);
1813
1814         /* initial device configuration */
1815         mutex_lock(&dev->lock);
1816         dev->tvnorm = V4L2_STD_NTSC_M,
1817         cx25821_set_tvnorm(dev, dev->tvnorm);
1818         mutex_unlock(&dev->lock);
1819
1820         return 0;
1821
1822 fail_unreg:
1823         cx25821_video_unregister(dev, i);
1824         return err;
1825 }