drivers/media/video/davinci/vpfe_capture.c

   1 /*
   2  * Copyright (C) 2008-2009 Texas Instruments Inc
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17  *
  18  * Driver name : VPFE Capture driver
  19  *    VPFE Capture driver allows applications to capture and stream video
  20  *    frames on DaVinci SoCs (DM6446, DM355 etc) from a YUV source such as
  21  *    TVP5146 or  Raw Bayer RGB image data from an image sensor
  22  *    such as Microns' MT9T001, MT9T031 etc.
  23  *
  24  *    These SoCs have, in common, a Video Processing Subsystem (VPSS) that
  25  *    consists of a Video Processing Front End (VPFE) for capturing
  26  *    video/raw image data and Video Processing Back End (VPBE) for displaying
  27  *    YUV data through an in-built analog encoder or Digital LCD port. This
  28  *    driver is for capture through VPFE. A typical EVM using these SoCs have
  29  *    following high level configuration.
  30  *
  31  *
  32  *    decoder(TVP5146/          YUV/
  33  *           MT9T001)   -->  Raw Bayer RGB ---> MUX -> VPFE (CCDC/ISIF)
  34  *                              data input              |      |
  35  *                                                      V      |
  36  *                                                    SDRAM    |
  37  *                                                             V
  38  *                                                         Image Processor
  39  *                                                             |
  40  *                                                             V
  41  *                                                           SDRAM
  42  *    The data flow happens from a decoder connected to the VPFE over a
  43  *    YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface
  44  *    and to the input of VPFE through an optional MUX (if more inputs are
  45  *    to be interfaced on the EVM). The input data is first passed through
  46  *    CCDC (CCD Controller, a.k.a Image Sensor Interface, ISIF). The CCDC
  47  *    does very little or no processing on YUV data and does pre-process Raw
  48  *    Bayer RGB data through modules such as Defect Pixel Correction (DFC)
  49  *    Color Space Conversion (CSC), data gain/offset etc. After this, data
  50  *    can be written to SDRAM or can be connected to the image processing
  51  *    block such as IPIPE (on DM355 only).
  52  *
  53  *    Features supported
  54  *              - MMAP IO
  55  *              - Capture using TVP5146 over BT.656
  56  *              - support for interfacing decoders using sub device model
  57  *              - Work with DM355 or DM6446 CCDC to do Raw Bayer RGB/YUV
  58  *                data capture to SDRAM.
  59  *    TODO list
  60  *              - Support multiple REQBUF after open
  61  *              - Support for de-allocating buffers through REQBUF
  62  *              - Support for Raw Bayer RGB capture
  63  *              - Support for chaining Image Processor
  64  *              - Support for static allocation of buffers
  65  *              - Support for USERPTR IO
  66  *              - Support for STREAMON before QBUF
  67  *              - Support for control ioctls
  68  */
  69 #include <linux/module.h>
  70 #include <linux/slab.h>
  71 #include <linux/init.h>
  72 #include <linux/platform_device.h>
  73 #include <linux/interrupt.h>
  74 #include <media/v4l2-common.h>
  75 #include <linux/io.h>
  76 #include <media/davinci/vpfe_capture.h>
  77 #include "ccdc_hw_device.h"
  78
  79 static int debug;
  80 static u32 numbuffers = 3;
  81 static u32 bufsize = (720 * 576 * 2);
  82
  83 module_param(numbuffers, uint, S_IRUGO);
  84 module_param(bufsize, uint, S_IRUGO);
  85 module_param(debug, int, 0644);
  86
  87 MODULE_PARM_DESC(numbuffers, "buffer count (default:3)");
  88 MODULE_PARM_DESC(bufsize, "buffer size in bytes (default:720 x 576 x 2)");
  89 MODULE_PARM_DESC(debug, "Debug level 0-1");
  90
  91 MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
  92 MODULE_LICENSE("GPL");
  93 MODULE_AUTHOR("Texas Instruments");
  94
  95 /* standard information */
  96 struct vpfe_standard {
  97         v4l2_std_id std_id;
  98         unsigned int width;
  99         unsigned int height;
 100         struct v4l2_fract pixelaspect;
 101         /* 0 - progressive, 1 - interlaced */
 102         int frame_format;
 103 };
 104
 105 /* ccdc configuration */
 106 struct ccdc_config {
 107         /* This make sure vpfe is probed and ready to go */
 108         int vpfe_probed;
 109         /* name of ccdc device */
 110         char name[32];
 111 };
 112
 113 /* data structures */
 114 static struct vpfe_config_params config_params = {
 115         .min_numbuffers = 3,
 116         .numbuffers = 3,
 117         .min_bufsize = 720 * 480 * 2,
 118         .device_bufsize = 720 * 576 * 2,
 119 };
 120
 121 /* ccdc device registered */
 122 static struct ccdc_hw_device *ccdc_dev;
 123 /* lock for accessing ccdc information */
 124 static DEFINE_MUTEX(ccdc_lock);
 125 /* ccdc configuration */
 126 static struct ccdc_config *ccdc_cfg;
 127
 128 const struct vpfe_standard vpfe_standards[] = {
 129         {V4L2_STD_525_60, 720, 480, {11, 10}, 1},
 130         {V4L2_STD_625_50, 720, 576, {54, 59}, 1},
 131 };
 132
 133 /* Used when raw Bayer image from ccdc is directly captured to SDRAM */
 134 static const struct vpfe_pixel_format vpfe_pix_fmts[] = {
 135         {
 136                 .fmtdesc = {
 137                         .index = 0,
 138                         .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 139                         .description = "Bayer GrRBGb 8bit A-Law compr.",
 140                         .pixelformat = V4L2_PIX_FMT_SBGGR8,
 141                 },
 142                 .bpp = 1,
 143         },
 144         {
 145                 .fmtdesc = {
 146                         .index = 1,
 147                         .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 148                         .description = "Bayer GrRBGb - 16bit",
 149                         .pixelformat = V4L2_PIX_FMT_SBGGR16,
 150                 },
 151                 .bpp = 2,
 152         },
 153         {
 154                 .fmtdesc = {
 155                         .index = 2,
 156                         .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 157                         .description = "Bayer GrRBGb 8bit DPCM compr.",
 158                         .pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
 159                 },
 160                 .bpp = 1,
 161         },
 162         {
 163                 .fmtdesc = {
 164                         .index = 3,
 165                         .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 166                         .description = "YCbCr 4:2:2 Interleaved UYVY",
 167                         .pixelformat = V4L2_PIX_FMT_UYVY,
 168                 },
 169                 .bpp = 2,
 170         },
 171         {
 172                 .fmtdesc = {
 173                         .index = 4,
 174                         .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 175                         .description = "YCbCr 4:2:2 Interleaved YUYV",
 176                         .pixelformat = V4L2_PIX_FMT_YUYV,
 177                 },
 178                 .bpp = 2,
 179         },
 180         {
 181                 .fmtdesc = {
 182                         .index = 5,
 183                         .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 184                         .description = "Y/CbCr 4:2:0 - Semi planar",
 185                         .pixelformat = V4L2_PIX_FMT_NV12,
 186                 },
 187                 .bpp = 1,
 188         },
 189 };
 190
 191 /*
 192  * vpfe_lookup_pix_format()
 193  * lookup an entry in the vpfe pix format table based on pix_format
 194  */
 195 static const struct vpfe_pixel_format *vpfe_lookup_pix_format(u32 pix_format)
 196 {
 197         int i;
 198
 199         for (i = 0; i < ARRAY_SIZE(vpfe_pix_fmts); i++) {
 200                 if (pix_format == vpfe_pix_fmts[i].fmtdesc.pixelformat)
 201                         return &vpfe_pix_fmts[i];
 202         }
 203         return NULL;
 204 }
 205
 206 /*
 207  * vpfe_register_ccdc_device. CCDC module calls this to
 208  * register with vpfe capture
 209  */
 210 int vpfe_register_ccdc_device(struct ccdc_hw_device *dev)
 211 {
 212         int ret = 0;
 213         printk(KERN_NOTICE "vpfe_register_ccdc_device: %s\n", dev->name);
 214
 215         BUG_ON(!dev->hw_ops.open);
 216         BUG_ON(!dev->hw_ops.enable);
 217         BUG_ON(!dev->hw_ops.set_hw_if_params);
 218         BUG_ON(!dev->hw_ops.configure);
 219         BUG_ON(!dev->hw_ops.set_buftype);
 220         BUG_ON(!dev->hw_ops.get_buftype);
 221         BUG_ON(!dev->hw_ops.enum_pix);
 222         BUG_ON(!dev->hw_ops.set_frame_format);
 223         BUG_ON(!dev->hw_ops.get_frame_format);
 224         BUG_ON(!dev->hw_ops.get_pixel_format);
 225         BUG_ON(!dev->hw_ops.set_pixel_format);
 226         BUG_ON(!dev->hw_ops.set_image_window);
 227         BUG_ON(!dev->hw_ops.get_image_window);
 228         BUG_ON(!dev->hw_ops.get_line_length);
 229         BUG_ON(!dev->hw_ops.getfid);
 230
 231         mutex_lock(&ccdc_lock);
 232         if (NULL == ccdc_cfg) {
 233                 /*
 234                  * TODO. Will this ever happen? if so, we need to fix it.
 235                  * Proabably we need to add the request to a linked list and
 236                  * walk through it during vpfe probe
 237                  */
 238                 printk(KERN_ERR "vpfe capture not initialized\n");
 239                 ret = -EFAULT;
 240                 goto unlock;
 241         }
 242
 243         if (strcmp(dev->name, ccdc_cfg->name)) {
 244                 /* ignore this ccdc */
 245                 ret = -EINVAL;
 246                 goto unlock;
 247         }
 248
 249         if (ccdc_dev) {
 250                 printk(KERN_ERR "ccdc already registered\n");
 251                 ret = -EINVAL;
 252                 goto unlock;
 253         }
 254
 255         ccdc_dev = dev;
 256 unlock:
 257         mutex_unlock(&ccdc_lock);
 258         return ret;
 259 }
 260 EXPORT_SYMBOL(vpfe_register_ccdc_device);
 261
 262 /*
 263  * vpfe_unregister_ccdc_device. CCDC module calls this to
 264  * unregister with vpfe capture
 265  */
 266 void vpfe_unregister_ccdc_device(struct ccdc_hw_device *dev)
 267 {
 268         if (NULL == dev) {
 269                 printk(KERN_ERR "invalid ccdc device ptr\n");
 270                 return;
 271         }
 272
 273         printk(KERN_NOTICE "vpfe_unregister_ccdc_device, dev->name = %s\n",
 274                 dev->name);
 275
 276         if (strcmp(dev->name, ccdc_cfg->name)) {
 277                 /* ignore this ccdc */
 278                 return;
 279         }
 280
 281         mutex_lock(&ccdc_lock);
 282         ccdc_dev = NULL;
 283         mutex_unlock(&ccdc_lock);
 284         return;
 285 }
 286 EXPORT_SYMBOL(vpfe_unregister_ccdc_device);
 287
 288 /*
 289  * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings
 290  */
 291 static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe_dev,
 292                                  struct v4l2_format *f)
 293 {
 294         struct v4l2_rect image_win;
 295         enum ccdc_buftype buf_type;
 296         enum ccdc_frmfmt frm_fmt;
 297
 298         memset(f, 0, sizeof(*f));
 299         f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 300         ccdc_dev->hw_ops.get_image_window(&image_win);
 301         f->fmt.pix.width = image_win.width;
 302         f->fmt.pix.height = image_win.height;
 303         f->fmt.pix.bytesperline = ccdc_dev->hw_ops.get_line_length();
 304         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 305                                 f->fmt.pix.height;
 306         buf_type = ccdc_dev->hw_ops.get_buftype();
 307         f->fmt.pix.pixelformat = ccdc_dev->hw_ops.get_pixel_format();
 308         frm_fmt = ccdc_dev->hw_ops.get_frame_format();
 309         if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE)
 310                 f->fmt.pix.field = V4L2_FIELD_NONE;
 311         else if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
 312                 if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
 313                         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 314                 else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED)
 315                         f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
 316                 else {
 317                         v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf_type\n");
 318                         return -EINVAL;
 319                 }
 320         } else {
 321                 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid frm_fmt\n");
 322                 return -EINVAL;
 323         }
 324         return 0;
 325 }
 326
 327 /*
 328  * vpfe_config_ccdc_image_format()
 329  * For a pix format, configure ccdc to setup the capture
 330  */
 331 static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe_dev)
 332 {
 333         enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
 334         int ret = 0;
 335
 336         if (ccdc_dev->hw_ops.set_pixel_format(
 337                         vpfe_dev->fmt.fmt.pix.pixelformat) < 0) {
 338                 v4l2_err(&vpfe_dev->v4l2_dev,
 339                         "couldn't set pix format in ccdc\n");
 340                 return -EINVAL;
 341         }
 342         /* configure the image window */
 343         ccdc_dev->hw_ops.set_image_window(&vpfe_dev->crop);
 344
 345         switch (vpfe_dev->fmt.fmt.pix.field) {
 346         case V4L2_FIELD_INTERLACED:
 347                 /* do nothing, since it is default */
 348                 ret = ccdc_dev->hw_ops.set_buftype(
 349                                 CCDC_BUFTYPE_FLD_INTERLEAVED);
 350                 break;
 351         case V4L2_FIELD_NONE:
 352                 frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
 353                 /* buffer type only applicable for interlaced scan */
 354                 break;
 355         case V4L2_FIELD_SEQ_TB:
 356                 ret = ccdc_dev->hw_ops.set_buftype(
 357                                 CCDC_BUFTYPE_FLD_SEPARATED);
 358                 break;
 359         default:
 360                 return -EINVAL;
 361         }
 362
 363         /* set the frame format */
 364         if (!ret)
 365                 ret = ccdc_dev->hw_ops.set_frame_format(frm_fmt);
 366         return ret;
 367 }
 368 /*
 369  * vpfe_config_image_format()
 370  * For a given standard, this functions sets up the default
 371  * pix format & crop values in the vpfe device and ccdc.  It first
 372  * starts with defaults based values from the standard table.
 373  * It then checks if sub device support g_mbus_fmt and then override the
 374  * values based on that.Sets crop values to match with scan resolution
 375  * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
 376  * values in ccdc
 377  */
 378 static int vpfe_config_image_format(struct vpfe_device *vpfe_dev,
 379                                     const v4l2_std_id *std_id)
 380 {
 381         struct vpfe_subdev_info *sdinfo = vpfe_dev->current_subdev;
 382         struct v4l2_mbus_framefmt mbus_fmt;
 383         struct v4l2_pix_format *pix = &vpfe_dev->fmt.fmt.pix;
 384         int i, ret = 0;
 385
 386         for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
 387                 if (vpfe_standards[i].std_id & *std_id) {
 388                         vpfe_dev->std_info.active_pixels =
 389                                         vpfe_standards[i].width;
 390                         vpfe_dev->std_info.active_lines =
 391                                         vpfe_standards[i].height;
 392                         vpfe_dev->std_info.frame_format =
 393                                         vpfe_standards[i].frame_format;
 394                         vpfe_dev->std_index = i;
 395                         break;
 396                 }
 397         }
 398
 399         if (i ==  ARRAY_SIZE(vpfe_standards)) {
 400                 v4l2_err(&vpfe_dev->v4l2_dev, "standard not supported\n");
 401                 return -EINVAL;
 402         }
 403
 404         vpfe_dev->crop.top = 0;
 405         vpfe_dev->crop.left = 0;
 406         vpfe_dev->crop.width = vpfe_dev->std_info.active_pixels;
 407         vpfe_dev->crop.height = vpfe_dev->std_info.active_lines;
 408         pix->width = vpfe_dev->crop.width;
 409         pix->height = vpfe_dev->crop.height;
 410
 411         /* first field and frame format based on standard frame format */
 412         if (vpfe_dev->std_info.frame_format) {
 413                 pix->field = V4L2_FIELD_INTERLACED;
 414                 /* assume V4L2_PIX_FMT_UYVY as default */
 415                 pix->pixelformat = V4L2_PIX_FMT_UYVY;
 416                 v4l2_fill_mbus_format(&mbus_fmt, pix,
 417                                 V4L2_MBUS_FMT_YUYV10_2X10);
 418         } else {
 419                 pix->field = V4L2_FIELD_NONE;
 420                 /* assume V4L2_PIX_FMT_SBGGR8 */
 421                 pix->pixelformat = V4L2_PIX_FMT_SBGGR8;
 422                 v4l2_fill_mbus_format(&mbus_fmt, pix,
 423                                 V4L2_MBUS_FMT_SBGGR8_1X8);
 424         }
 425
 426         /* if sub device supports g_mbus_fmt, override the defaults */
 427         ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
 428                         sdinfo->grp_id, video, g_mbus_fmt, &mbus_fmt);
 429
 430         if (ret && ret != -ENOIOCTLCMD) {
 431                 v4l2_err(&vpfe_dev->v4l2_dev,
 432                         "error in getting g_mbus_fmt from sub device\n");
 433                 return ret;
 434         }
 435         v4l2_fill_pix_format(pix, &mbus_fmt);
 436         pix->bytesperline = pix->width * 2;
 437         pix->sizeimage = pix->bytesperline * pix->height;
 438
 439         /* Sets the values in CCDC */
 440         ret = vpfe_config_ccdc_image_format(vpfe_dev);
 441         if (ret)
 442                 return ret;
 443
 444         /* Update the values of sizeimage and bytesperline */
 445         if (!ret) {
 446                 pix->bytesperline = ccdc_dev->hw_ops.get_line_length();
 447                 pix->sizeimage = pix->bytesperline * pix->height;
 448         }
 449         return ret;
 450 }
 451
 452 static int vpfe_initialize_device(struct vpfe_device *vpfe_dev)
 453 {
 454         int ret = 0;
 455
 456         /* set first input of current subdevice as the current input */
 457         vpfe_dev->current_input = 0;
 458
 459         /* set default standard */
 460         vpfe_dev->std_index = 0;
 461
 462         /* Configure the default format information */
 463         ret = vpfe_config_image_format(vpfe_dev,
 464                                 &vpfe_standards[vpfe_dev->std_index].std_id);
 465         if (ret)
 466                 return ret;
 467
 468         /* now open the ccdc device to initialize it */
 469         mutex_lock(&ccdc_lock);
 470         if (NULL == ccdc_dev) {
 471                 v4l2_err(&vpfe_dev->v4l2_dev, "ccdc device not registered\n");
 472                 ret = -ENODEV;
 473                 goto unlock;
 474         }
 475
 476         if (!try_module_get(ccdc_dev->owner)) {
 477                 v4l2_err(&vpfe_dev->v4l2_dev, "Couldn't lock ccdc module\n");
 478                 ret = -ENODEV;
 479                 goto unlock;
 480         }
 481         ret = ccdc_dev->hw_ops.open(vpfe_dev->pdev);
 482         if (!ret)
 483                 vpfe_dev->initialized = 1;
 484
 485         /* Clear all VPFE/CCDC interrupts */
 486         if (vpfe_dev->cfg->clr_intr)
 487                 vpfe_dev->cfg->clr_intr(-1);
 488
 489 unlock:
 490         mutex_unlock(&ccdc_lock);
 491         return ret;
 492 }
 493
 494 /*
 495  * vpfe_open : It creates object of file handle structure and
 496  * stores it in private_data  member of filepointer
 497  */
 498 static int vpfe_open(struct file *file)
 499 {
 500         struct vpfe_device *vpfe_dev = video_drvdata(file);
 501         struct vpfe_fh *fh;
 502
 503         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_open\n");
 504
 505         if (!vpfe_dev->cfg->num_subdevs) {
 506                 v4l2_err(&vpfe_dev->v4l2_dev, "No decoder registered\n");
 507                 return -ENODEV;
 508         }
 509
 510         /* Allocate memory for the file handle object */
 511         fh = kmalloc(sizeof(struct vpfe_fh), GFP_KERNEL);
 512         if (NULL == fh) {
 513                 v4l2_err(&vpfe_dev->v4l2_dev,
 514                         "unable to allocate memory for file handle object\n");
 515                 return -ENOMEM;
 516         }
 517         /* store pointer to fh in private_data member of file */
 518         file->private_data = fh;
 519         fh->vpfe_dev = vpfe_dev;
 520         mutex_lock(&vpfe_dev->lock);
 521         /* If decoder is not initialized. initialize it */
 522         if (!vpfe_dev->initialized) {
 523                 if (vpfe_initialize_device(vpfe_dev)) {
 524                         mutex_unlock(&vpfe_dev->lock);
 525                         return -ENODEV;
 526                 }
 527         }
 528         /* Increment device usrs counter */
 529         vpfe_dev->usrs++;
 530         /* Set io_allowed member to false */
 531         fh->io_allowed = 0;
 532         /* Initialize priority of this instance to default priority */
 533         fh->prio = V4L2_PRIORITY_UNSET;
 534         v4l2_prio_open(&vpfe_dev->prio, &fh->prio);
 535         mutex_unlock(&vpfe_dev->lock);
 536         return 0;
 537 }
 538
 539 static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev)
 540 {
 541         unsigned long addr;
 542
 543         vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
 544                                         struct videobuf_buffer, queue);
 545         list_del(&vpfe_dev->next_frm->queue);
 546         vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE;
 547         addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
 548
 549         ccdc_dev->hw_ops.setfbaddr(addr);
 550 }
 551
 552 static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev)
 553 {
 554         unsigned long addr;
 555
 556         addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
 557         addr += vpfe_dev->field_off;
 558         ccdc_dev->hw_ops.setfbaddr(addr);
 559 }
 560
 561 static void vpfe_process_buffer_complete(struct vpfe_device *vpfe_dev)
 562 {
 563         struct timeval timevalue;
 564
 565         do_gettimeofday(&timevalue);
 566         vpfe_dev->cur_frm->ts = timevalue;
 567         vpfe_dev->cur_frm->state = VIDEOBUF_DONE;
 568         vpfe_dev->cur_frm->size = vpfe_dev->fmt.fmt.pix.sizeimage;
 569         wake_up_interruptible(&vpfe_dev->cur_frm->done);
 570         vpfe_dev->cur_frm = vpfe_dev->next_frm;
 571 }
 572
 573 /* ISR for VINT0*/
 574 static irqreturn_t vpfe_isr(int irq, void *dev_id)
 575 {
 576         struct vpfe_device *vpfe_dev = dev_id;
 577         enum v4l2_field field;
 578         int fid;
 579
 580         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n");
 581         field = vpfe_dev->fmt.fmt.pix.field;
 582
 583         /* if streaming not started, don't do anything */
 584         if (!vpfe_dev->started)
 585                 goto clear_intr;
 586
 587         /* only for 6446 this will be applicable */
 588         if (NULL != ccdc_dev->hw_ops.reset)
 589                 ccdc_dev->hw_ops.reset();
 590
 591         if (field == V4L2_FIELD_NONE) {
 592                 /* handle progressive frame capture */
 593                 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
 594                         "frame format is progressive...\n");
 595                 if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
 596                         vpfe_process_buffer_complete(vpfe_dev);
 597                 goto clear_intr;
 598         }
 599
 600         /* interlaced or TB capture check which field we are in hardware */
 601         fid = ccdc_dev->hw_ops.getfid();
 602
 603         /* switch the software maintained field id */
 604         vpfe_dev->field_id ^= 1;
 605         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "field id = %x:%x.\n",
 606                 fid, vpfe_dev->field_id);
 607         if (fid == vpfe_dev->field_id) {
 608                 /* we are in-sync here,continue */
 609                 if (fid == 0) {
 610                         /*
 611                          * One frame is just being captured. If the next frame
 612                          * is available, release the current frame and move on
 613                          */
 614                         if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
 615                                 vpfe_process_buffer_complete(vpfe_dev);
 616                         /*
 617                          * based on whether the two fields are stored
 618                          * interleavely or separately in memory, reconfigure
 619                          * the CCDC memory address
 620                          */
 621                         if (field == V4L2_FIELD_SEQ_TB) {
 622                                 vpfe_schedule_bottom_field(vpfe_dev);
 623                         }
 624                         goto clear_intr;
 625                 }
 626                 /*
 627                  * if one field is just being captured configure
 628                  * the next frame get the next frame from the empty
 629                  * queue if no frame is available hold on to the
 630                  * current buffer
 631                  */
 632                 spin_lock(&vpfe_dev->dma_queue_lock);
 633                 if (!list_empty(&vpfe_dev->dma_queue) &&
 634                     vpfe_dev->cur_frm == vpfe_dev->next_frm)
 635                         vpfe_schedule_next_buffer(vpfe_dev);
 636                 spin_unlock(&vpfe_dev->dma_queue_lock);
 637         } else if (fid == 0) {
 638                 /*
 639                  * out of sync. Recover from any hardware out-of-sync.
 640                  * May loose one frame
 641                  */
 642                 vpfe_dev->field_id = fid;
 643         }
 644 clear_intr:
 645         if (vpfe_dev->cfg->clr_intr)
 646                 vpfe_dev->cfg->clr_intr(irq);
 647
 648         return IRQ_HANDLED;
 649 }
 650
 651 /* vdint1_isr - isr handler for VINT1 interrupt */
 652 static irqreturn_t vdint1_isr(int irq, void *dev_id)
 653 {
 654         struct vpfe_device *vpfe_dev = dev_id;
 655
 656         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nInside vdint1_isr...\n");
 657
 658         /* if streaming not started, don't do anything */
 659         if (!vpfe_dev->started) {
 660                 if (vpfe_dev->cfg->clr_intr)
 661                         vpfe_dev->cfg->clr_intr(irq);
 662                 return IRQ_HANDLED;
 663         }
 664
 665         spin_lock(&vpfe_dev->dma_queue_lock);
 666         if ((vpfe_dev->fmt.fmt.pix.field == V4L2_FIELD_NONE) &&
 667             !list_empty(&vpfe_dev->dma_queue) &&
 668             vpfe_dev->cur_frm == vpfe_dev->next_frm)
 669                 vpfe_schedule_next_buffer(vpfe_dev);
 670         spin_unlock(&vpfe_dev->dma_queue_lock);
 671
 672         if (vpfe_dev->cfg->clr_intr)
 673                 vpfe_dev->cfg->clr_intr(irq);
 674
 675         return IRQ_HANDLED;
 676 }
 677
 678 static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
 679 {
 680         enum ccdc_frmfmt frame_format;
 681
 682         frame_format = ccdc_dev->hw_ops.get_frame_format();
 683         if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
 684                 free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
 685 }
 686
 687 static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
 688 {
 689         enum ccdc_frmfmt frame_format;
 690
 691         frame_format = ccdc_dev->hw_ops.get_frame_format();
 692         if (frame_format == CCDC_FRMFMT_PROGRESSIVE) {
 693                 return request_irq(vpfe_dev->ccdc_irq1, vdint1_isr,
 694                                     IRQF_DISABLED, "vpfe_capture1",
 695                                     vpfe_dev);
 696         }
 697         return 0;
 698 }
 699
 700 /* vpfe_stop_ccdc_capture: stop streaming in ccdc/isif */
 701 static void vpfe_stop_ccdc_capture(struct vpfe_device *vpfe_dev)
 702 {
 703         vpfe_dev->started = 0;
 704         ccdc_dev->hw_ops.enable(0);
 705         if (ccdc_dev->hw_ops.enable_out_to_sdram)
 706                 ccdc_dev->hw_ops.enable_out_to_sdram(0);
 707 }
 708
 709 /*
 710  * vpfe_release : This function deletes buffer queue, frees the
 711  * buffers and the vpfe file  handle
 712  */
 713 static int vpfe_release(struct file *file)
 714 {
 715         struct vpfe_device *vpfe_dev = video_drvdata(file);
 716         struct vpfe_fh *fh = file->private_data;
 717         struct vpfe_subdev_info *sdinfo;
 718         int ret;
 719
 720         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n");
 721
 722         /* Get the device lock */
 723         mutex_lock(&vpfe_dev->lock);
 724         /* if this instance is doing IO */
 725         if (fh->io_allowed) {
 726                 if (vpfe_dev->started) {
 727                         sdinfo = vpfe_dev->current_subdev;
 728                         ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
 729                                                          sdinfo->grp_id,
 730                                                          video, s_stream, 0);
 731                         if (ret && (ret != -ENOIOCTLCMD))
 732                                 v4l2_err(&vpfe_dev->v4l2_dev,
 733                                 "stream off failed in subdev\n");
 734                         vpfe_stop_ccdc_capture(vpfe_dev);
 735                         vpfe_detach_irq(vpfe_dev);
 736                         videobuf_streamoff(&vpfe_dev->buffer_queue);
 737                 }
 738                 vpfe_dev->io_usrs = 0;
 739                 vpfe_dev->numbuffers = config_params.numbuffers;
 740         }
 741
 742         /* Decrement device usrs counter */
 743         vpfe_dev->usrs--;
 744         /* Close the priority */
 745         v4l2_prio_close(&vpfe_dev->prio, fh->prio);
 746         /* If this is the last file handle */
 747         if (!vpfe_dev->usrs) {
 748                 vpfe_dev->initialized = 0;
 749                 if (ccdc_dev->hw_ops.close)
 750                         ccdc_dev->hw_ops.close(vpfe_dev->pdev);
 751                 module_put(ccdc_dev->owner);
 752         }
 753         mutex_unlock(&vpfe_dev->lock);
 754         file->private_data = NULL;
 755         /* Free memory allocated to file handle object */
 756         kfree(fh);
 757         return 0;
 758 }
 759
 760 /*
 761  * vpfe_mmap : It is used to map kernel space buffers
 762  * into user spaces
 763  */
 764 static int vpfe_mmap(struct file *file, struct vm_area_struct *vma)
 765 {
 766         /* Get the device object and file handle object */
 767         struct vpfe_device *vpfe_dev = video_drvdata(file);
 768
 769         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n");
 770
 771         return videobuf_mmap_mapper(&vpfe_dev->buffer_queue, vma);
 772 }
 773
 774 /*
 775  * vpfe_poll: It is used for select/poll system call
 776  */
 777 static unsigned int vpfe_poll(struct file *file, poll_table *wait)
 778 {
 779         struct vpfe_device *vpfe_dev = video_drvdata(file);
 780
 781         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n");
 782
 783         if (vpfe_dev->started)
 784                 return videobuf_poll_stream(file,
 785                                             &vpfe_dev->buffer_queue, wait);
 786         return 0;
 787 }
 788
 789 /* vpfe capture driver file operations */
 790 static const struct v4l2_file_operations vpfe_fops = {
 791         .owner = THIS_MODULE,
 792         .open = vpfe_open,
 793         .release = vpfe_release,
 794         .unlocked_ioctl = video_ioctl2,
 795         .mmap = vpfe_mmap,
 796         .poll = vpfe_poll
 797 };
 798
 799 /*
 800  * vpfe_check_format()
 801  * This function adjust the input pixel format as per hardware
 802  * capabilities and update the same in pixfmt.
 803  * Following algorithm used :-
 804  *
 805  *      If given pixformat is not in the vpfe list of pix formats or not
 806  *      supported by the hardware, current value of pixformat in the device
 807  *      is used
 808  *      If given field is not supported, then current field is used. If field
 809  *      is different from current, then it is matched with that from sub device.
 810  *      Minimum height is 2 lines for interlaced or tb field and 1 line for
 811  *      progressive. Maximum height is clamped to active active lines of scan
 812  *      Minimum width is 32 bytes in memory and width is clamped to active
 813  *      pixels of scan.
 814  *      bytesperline is a multiple of 32.
 815  */
 816 static const struct vpfe_pixel_format *
 817         vpfe_check_format(struct vpfe_device *vpfe_dev,
 818                           struct v4l2_pix_format *pixfmt)
 819 {
 820         u32 min_height = 1, min_width = 32, max_width, max_height;
 821         const struct vpfe_pixel_format *vpfe_pix_fmt;
 822         u32 pix;
 823         int temp, found;
 824
 825         vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
 826         if (NULL == vpfe_pix_fmt) {
 827                 /*
 828                  * use current pixel format in the vpfe device. We
 829                  * will find this pix format in the table
 830                  */
 831                 pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
 832                 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
 833         }
 834
 835         /* check if hw supports it */
 836         temp = 0;
 837         found = 0;
 838         while (ccdc_dev->hw_ops.enum_pix(&pix, temp) >= 0) {
 839                 if (vpfe_pix_fmt->fmtdesc.pixelformat == pix) {
 840                         found = 1;
 841                         break;
 842                 }
 843                 temp++;
 844         }
 845
 846         if (!found) {
 847                 /* use current pixel format */
 848                 pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
 849                 /*
 850                  * Since this is currently used in the vpfe device, we
 851                  * will find this pix format in the table
 852                  */
 853                 vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
 854         }
 855
 856         /* check what field format is supported */
 857         if (pixfmt->field == V4L2_FIELD_ANY) {
 858                 /* if field is any, use current value as default */
 859                 pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
 860         }
 861
 862         /*
 863          * if field is not same as current field in the vpfe device
 864          * try matching the field with the sub device field
 865          */
 866         if (vpfe_dev->fmt.fmt.pix.field != pixfmt->field) {
 867                 /*
 868                  * If field value is not in the supported fields, use current
 869                  * field used in the device as default
 870                  */
 871                 switch (pixfmt->field) {
 872                 case V4L2_FIELD_INTERLACED:
 873                 case V4L2_FIELD_SEQ_TB:
 874                         /* if sub device is supporting progressive, use that */
 875                         if (!vpfe_dev->std_info.frame_format)
 876                                 pixfmt->field = V4L2_FIELD_NONE;
 877                         break;
 878                 case V4L2_FIELD_NONE:
 879                         if (vpfe_dev->std_info.frame_format)
 880                                 pixfmt->field = V4L2_FIELD_INTERLACED;
 881                         break;
 882
 883                 default:
 884                         /* use current field as default */
 885                         pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
 886                         break;
 887                 }
 888         }
 889
 890         /* Now adjust image resolutions supported */
 891         if (pixfmt->field == V4L2_FIELD_INTERLACED ||
 892             pixfmt->field == V4L2_FIELD_SEQ_TB)
 893                 min_height = 2;
 894
 895         max_width = vpfe_dev->std_info.active_pixels;
 896         max_height = vpfe_dev->std_info.active_lines;
 897         min_width /= vpfe_pix_fmt->bpp;
 898
 899         v4l2_info(&vpfe_dev->v4l2_dev, "width = %d, height = %d, bpp = %d\n",
 900                   pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp);
 901
 902         pixfmt->width = clamp((pixfmt->width), min_width, max_width);
 903         pixfmt->height = clamp((pixfmt->height), min_height, max_height);
 904
 905         /* If interlaced, adjust height to be a multiple of 2 */
 906         if (pixfmt->field == V4L2_FIELD_INTERLACED)
 907                 pixfmt->height &= (~1);
 908         /*
 909          * recalculate bytesperline and sizeimage since width
 910          * and height might have changed
 911          */
 912         pixfmt->bytesperline = (((pixfmt->width * vpfe_pix_fmt->bpp) + 31)
 913                                 & ~31);
 914         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 915                 pixfmt->sizeimage =
 916                         pixfmt->bytesperline * pixfmt->height +
 917                         ((pixfmt->bytesperline * pixfmt->height) >> 1);
 918         else
 919                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 920
 921         v4l2_info(&vpfe_dev->v4l2_dev, "adjusted width = %d, height ="
 922                  " %d, bpp = %d, bytesperline = %d, sizeimage = %d\n",
 923                  pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp,
 924                  pixfmt->bytesperline, pixfmt->sizeimage);
 925         return vpfe_pix_fmt;
 926 }
 927
 928 static int vpfe_querycap(struct file *file, void  *priv,
 929                                struct v4l2_capability *cap)
 930 {
 931         struct vpfe_device *vpfe_dev = video_drvdata(file);
 932
 933         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n");
 934
 935         cap->version = VPFE_CAPTURE_VERSION_CODE;
 936         cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
 937         strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
 938         strlcpy(cap->bus_info, "VPFE", sizeof(cap->bus_info));
 939         strlcpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card));
 940         return 0;
 941 }
 942
 943 static int vpfe_g_fmt_vid_cap(struct file *file, void *priv,
 944                                 struct v4l2_format *fmt)
 945 {
 946         struct vpfe_device *vpfe_dev = video_drvdata(file);
 947         int ret = 0;
 948
 949         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt_vid_cap\n");
 950         /* Fill in the information about format */
 951         *fmt = vpfe_dev->fmt;
 952         return ret;
 953 }
 954
 955 static int vpfe_enum_fmt_vid_cap(struct file *file, void  *priv,
 956                                    struct v4l2_fmtdesc *fmt)
 957 {
 958         struct vpfe_device *vpfe_dev = video_drvdata(file);
 959         const struct vpfe_pixel_format *pix_fmt;
 960         int temp_index;
 961         u32 pix;
 962
 963         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt_vid_cap\n");
 964
 965         if (ccdc_dev->hw_ops.enum_pix(&pix, fmt->index) < 0)
 966                 return -EINVAL;
 967
 968         /* Fill in the information about format */
 969         pix_fmt = vpfe_lookup_pix_format(pix);
 970         if (NULL != pix_fmt) {
 971                 temp_index = fmt->index;
 972                 *fmt = pix_fmt->fmtdesc;
 973                 fmt->index = temp_index;
 974                 return 0;
 975         }
 976         return -EINVAL;
 977 }
 978
 979 static int vpfe_s_fmt_vid_cap(struct file *file, void *priv,
 980                                 struct v4l2_format *fmt)
 981 {
 982         struct vpfe_device *vpfe_dev = video_drvdata(file);
 983         const struct vpfe_pixel_format *pix_fmts;
 984         int ret = 0;
 985
 986         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt_vid_cap\n");
 987
 988         /* If streaming is started, return error */
 989         if (vpfe_dev->started) {
 990                 v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n");
 991                 return -EBUSY;
 992         }
 993
 994         /* Check for valid frame format */
 995         pix_fmts = vpfe_check_format(vpfe_dev, &fmt->fmt.pix);
 996
 997         if (NULL == pix_fmts)
 998                 return -EINVAL;
 999
1000         /* store the pixel format in the device  object */
1001         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1002         if (ret)
1003                 return ret;
1004
1005         /* First detach any IRQ if currently attached */
1006         vpfe_detach_irq(vpfe_dev);
1007         vpfe_dev->fmt = *fmt;
1008         /* set image capture parameters in the ccdc */
1009         ret = vpfe_config_ccdc_image_format(vpfe_dev);
1010         mutex_unlock(&vpfe_dev->lock);
1011         return ret;
1012 }
1013
1014 static int vpfe_try_fmt_vid_cap(struct file *file, void *priv,
1015                                   struct v4l2_format *f)
1016 {
1017         struct vpfe_device *vpfe_dev = video_drvdata(file);
1018         const struct vpfe_pixel_format *pix_fmts;
1019
1020         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt_vid_cap\n");
1021
1022         pix_fmts = vpfe_check_format(vpfe_dev, &f->fmt.pix);
1023         if (NULL == pix_fmts)
1024                 return -EINVAL;
1025         return 0;
1026 }
1027
1028 /*
1029  * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
1030  * given app input index
1031  */
1032 static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe_dev,
1033                                         int *subdev_index,
1034                                         int *subdev_input_index,
1035                                         int app_input_index)
1036 {
1037         struct vpfe_config *cfg = vpfe_dev->cfg;
1038         struct vpfe_subdev_info *sdinfo;
1039         int i, j = 0;
1040
1041         for (i = 0; i < cfg->num_subdevs; i++) {
1042                 sdinfo = &cfg->sub_devs[i];
1043                 if (app_input_index < (j + sdinfo->num_inputs)) {
1044                         *subdev_index = i;
1045                         *subdev_input_index = app_input_index - j;
1046                         return 0;
1047                 }
1048                 j += sdinfo->num_inputs;
1049         }
1050         return -EINVAL;
1051 }
1052
1053 /*
1054  * vpfe_get_app_input - Get app input index for a given subdev input index
1055  * driver stores the input index of the current sub device and translate it
1056  * when application request the current input
1057  */
1058 static int vpfe_get_app_input_index(struct vpfe_device *vpfe_dev,
1059                                     int *app_input_index)
1060 {
1061         struct vpfe_config *cfg = vpfe_dev->cfg;
1062         struct vpfe_subdev_info *sdinfo;
1063         int i, j = 0;
1064
1065         for (i = 0; i < cfg->num_subdevs; i++) {
1066                 sdinfo = &cfg->sub_devs[i];
1067                 if (!strcmp(sdinfo->name, vpfe_dev->current_subdev->name)) {
1068                         if (vpfe_dev->current_input >= sdinfo->num_inputs)
1069                                 return -1;
1070                         *app_input_index = j + vpfe_dev->current_input;
1071                         return 0;
1072                 }
1073                 j += sdinfo->num_inputs;
1074         }
1075         return -EINVAL;
1076 }
1077
1078 static int vpfe_enum_input(struct file *file, void *priv,
1079                                  struct v4l2_input *inp)
1080 {
1081         struct vpfe_device *vpfe_dev = video_drvdata(file);
1082         struct vpfe_subdev_info *sdinfo;
1083         int subdev, index ;
1084
1085         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n");
1086
1087         if (vpfe_get_subdev_input_index(vpfe_dev,
1088                                         &subdev,
1089                                         &index,
1090                                         inp->index) < 0) {
1091                 v4l2_err(&vpfe_dev->v4l2_dev, "input information not found"
1092                          " for the subdev\n");
1093                 return -EINVAL;
1094         }
1095         sdinfo = &vpfe_dev->cfg->sub_devs[subdev];
1096         memcpy(inp, &sdinfo->inputs[index], sizeof(struct v4l2_input));
1097         return 0;
1098 }
1099
1100 static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
1101 {
1102         struct vpfe_device *vpfe_dev = video_drvdata(file);
1103
1104         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n");
1105
1106         return vpfe_get_app_input_index(vpfe_dev, index);
1107 }
1108
1109
1110 static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
1111 {
1112         struct vpfe_device *vpfe_dev = video_drvdata(file);
1113         struct vpfe_subdev_info *sdinfo;
1114         int subdev_index, inp_index;
1115         struct vpfe_route *route;
1116         u32 input = 0, output = 0;
1117         int ret = -EINVAL;
1118
1119         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n");
1120
1121         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1122         if (ret)
1123                 return ret;
1124
1125         /*
1126          * If streaming is started return device busy
1127          * error
1128          */
1129         if (vpfe_dev->started) {
1130                 v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n");
1131                 ret = -EBUSY;
1132                 goto unlock_out;
1133         }
1134
1135         if (vpfe_get_subdev_input_index(vpfe_dev,
1136                                         &subdev_index,
1137                                         &inp_index,
1138                                         index) < 0) {
1139                 v4l2_err(&vpfe_dev->v4l2_dev, "invalid input index\n");
1140                 goto unlock_out;
1141         }
1142
1143         sdinfo = &vpfe_dev->cfg->sub_devs[subdev_index];
1144         route = &sdinfo->routes[inp_index];
1145         if (route && sdinfo->can_route) {
1146                 input = route->input;
1147                 output = route->output;
1148         }
1149
1150         ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1151                                          video, s_routing, input, output, 0);
1152
1153         if (ret) {
1154                 v4l2_err(&vpfe_dev->v4l2_dev,
1155                         "vpfe_doioctl:error in setting input in decoder\n");
1156                 ret = -EINVAL;
1157                 goto unlock_out;
1158         }
1159         vpfe_dev->current_subdev = sdinfo;
1160         vpfe_dev->current_input = index;
1161         vpfe_dev->std_index = 0;
1162
1163         /* set the bus/interface parameter for the sub device in ccdc */
1164         ret = ccdc_dev->hw_ops.set_hw_if_params(&sdinfo->ccdc_if_params);
1165         if (ret)
1166                 goto unlock_out;
1167
1168         /* set the default image parameters in the device */
1169         ret = vpfe_config_image_format(vpfe_dev,
1170                                 &vpfe_standards[vpfe_dev->std_index].std_id);
1171 unlock_out:
1172         mutex_unlock(&vpfe_dev->lock);
1173         return ret;
1174 }
1175
1176 static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1177 {
1178         struct vpfe_device *vpfe_dev = video_drvdata(file);
1179         struct vpfe_subdev_info *sdinfo;
1180         int ret = 0;
1181
1182         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n");
1183
1184         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1185         sdinfo = vpfe_dev->current_subdev;
1186         if (ret)
1187                 return ret;
1188         /* Call querystd function of decoder device */
1189         ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1190                                          video, querystd, std_id);
1191         mutex_unlock(&vpfe_dev->lock);
1192         return ret;
1193 }
1194
1195 static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
1196 {
1197         struct vpfe_device *vpfe_dev = video_drvdata(file);
1198         struct vpfe_subdev_info *sdinfo;
1199         int ret = 0;
1200
1201         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n");
1202
1203         /* Call decoder driver function to set the standard */
1204         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1205         if (ret)
1206                 return ret;
1207
1208         sdinfo = vpfe_dev->current_subdev;
1209         /* If streaming is started, return device busy error */
1210         if (vpfe_dev->started) {
1211                 v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n");
1212                 ret = -EBUSY;
1213                 goto unlock_out;
1214         }
1215
1216         ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1217                                          core, s_std, *std_id);
1218         if (ret < 0) {
1219                 v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n");
1220                 goto unlock_out;
1221         }
1222         ret = vpfe_config_image_format(vpfe_dev, std_id);
1223
1224 unlock_out:
1225         mutex_unlock(&vpfe_dev->lock);
1226         return ret;
1227 }
1228
1229 static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
1230 {
1231         struct vpfe_device *vpfe_dev = video_drvdata(file);
1232
1233         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n");
1234
1235         *std_id = vpfe_standards[vpfe_dev->std_index].std_id;
1236         return 0;
1237 }
1238 /*
1239  *  Videobuf operations
1240  */
1241 static int vpfe_videobuf_setup(struct videobuf_queue *vq,
1242                                 unsigned int *count,
1243                                 unsigned int *size)
1244 {
1245         struct vpfe_fh *fh = vq->priv_data;
1246         struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1247
1248         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
1249         *size = vpfe_dev->fmt.fmt.pix.sizeimage;
1250         if (vpfe_dev->memory == V4L2_MEMORY_MMAP &&
1251                 vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize)
1252                 *size = config_params.device_bufsize;
1253
1254         if (*count < config_params.min_numbuffers)
1255                 *count = config_params.min_numbuffers;
1256         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1257                 "count=%d, size=%d\n", *count, *size);
1258         return 0;
1259 }
1260
1261 static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
1262                                 struct videobuf_buffer *vb,
1263                                 enum v4l2_field field)
1264 {
1265         struct vpfe_fh *fh = vq->priv_data;
1266         struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1267         unsigned long addr;
1268         int ret;
1269
1270         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n");
1271
1272         /* If buffer is not initialized, initialize it */
1273         if (VIDEOBUF_NEEDS_INIT == vb->state) {
1274                 vb->width = vpfe_dev->fmt.fmt.pix.width;
1275                 vb->height = vpfe_dev->fmt.fmt.pix.height;
1276                 vb->size = vpfe_dev->fmt.fmt.pix.sizeimage;
1277                 vb->field = field;
1278
1279                 ret = videobuf_iolock(vq, vb, NULL);;
1280                 if (ret < 0)
1281                         return ret;
1282
1283                 addr = videobuf_to_dma_contig(vb);
1284                 /* Make sure user addresses are aligned to 32 bytes */
1285                 if (!ALIGN(addr, 32))
1286                         return -EINVAL;
1287
1288                 vb->state = VIDEOBUF_PREPARED;
1289         }
1290         return 0;
1291 }
1292
1293 static void vpfe_videobuf_queue(struct videobuf_queue *vq,
1294                                 struct videobuf_buffer *vb)
1295 {
1296         /* Get the file handle object and device object */
1297         struct vpfe_fh *fh = vq->priv_data;
1298         struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1299         unsigned long flags;
1300
1301         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue\n");
1302
1303         /* add the buffer to the DMA queue */
1304         spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
1305         list_add_tail(&vb->queue, &vpfe_dev->dma_queue);
1306         spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
1307
1308         /* Change state of the buffer */
1309         vb->state = VIDEOBUF_QUEUED;
1310 }
1311
1312 static void vpfe_videobuf_release(struct videobuf_queue *vq,
1313                                   struct videobuf_buffer *vb)
1314 {
1315         struct vpfe_fh *fh = vq->priv_data;
1316         struct vpfe_device *vpfe_dev = fh->vpfe_dev;
1317         unsigned long flags;
1318
1319         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_release\n");
1320
1321         /*
1322          * We need to flush the buffer from the dma queue since
1323          * they are de-allocated
1324          */
1325         spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
1326         INIT_LIST_HEAD(&vpfe_dev->dma_queue);
1327         spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
1328         videobuf_dma_contig_free(vq, vb);
1329         vb->state = VIDEOBUF_NEEDS_INIT;
1330 }
1331
1332 static struct videobuf_queue_ops vpfe_videobuf_qops = {
1333         .buf_setup      = vpfe_videobuf_setup,
1334         .buf_prepare    = vpfe_videobuf_prepare,
1335         .buf_queue      = vpfe_videobuf_queue,
1336         .buf_release    = vpfe_videobuf_release,
1337 };
1338
1339 /*
1340  * vpfe_reqbufs. currently support REQBUF only once opening
1341  * the device.
1342  */
1343 static int vpfe_reqbufs(struct file *file, void *priv,
1344                         struct v4l2_requestbuffers *req_buf)
1345 {
1346         struct vpfe_device *vpfe_dev = video_drvdata(file);
1347         struct vpfe_fh *fh = file->private_data;
1348         int ret = 0;
1349
1350         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n");
1351
1352         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type) {
1353                 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n");
1354                 return -EINVAL;
1355         }
1356
1357         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1358         if (ret)
1359                 return ret;
1360
1361         if (vpfe_dev->io_usrs != 0) {
1362                 v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n");
1363                 ret = -EBUSY;
1364                 goto unlock_out;
1365         }
1366
1367         vpfe_dev->memory = req_buf->memory;
1368         videobuf_queue_dma_contig_init(&vpfe_dev->buffer_queue,
1369                                 &vpfe_videobuf_qops,
1370                                 vpfe_dev->pdev,
1371                                 &vpfe_dev->irqlock,
1372                                 req_buf->type,
1373                                 vpfe_dev->fmt.fmt.pix.field,
1374                                 sizeof(struct videobuf_buffer),
1375                                 fh, NULL);
1376
1377         fh->io_allowed = 1;
1378         vpfe_dev->io_usrs = 1;
1379         INIT_LIST_HEAD(&vpfe_dev->dma_queue);
1380         ret = videobuf_reqbufs(&vpfe_dev->buffer_queue, req_buf);
1381 unlock_out:
1382         mutex_unlock(&vpfe_dev->lock);
1383         return ret;
1384 }
1385
1386 static int vpfe_querybuf(struct file *file, void *priv,
1387                          struct v4l2_buffer *buf)
1388 {
1389         struct vpfe_device *vpfe_dev = video_drvdata(file);
1390
1391         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n");
1392
1393         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
1394                 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1395                 return  -EINVAL;
1396         }
1397
1398         if (vpfe_dev->memory != V4L2_MEMORY_MMAP) {
1399                 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n");
1400                 return -EINVAL;
1401         }
1402         /* Call videobuf_querybuf to get information */
1403         return videobuf_querybuf(&vpfe_dev->buffer_queue, buf);
1404 }
1405
1406 static int vpfe_qbuf(struct file *file, void *priv,
1407                      struct v4l2_buffer *p)
1408 {
1409         struct vpfe_device *vpfe_dev = video_drvdata(file);
1410         struct vpfe_fh *fh = file->private_data;
1411
1412         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n");
1413
1414         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type) {
1415                 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1416                 return -EINVAL;
1417         }
1418
1419         /*
1420          * If this file handle is not allowed to do IO,
1421          * return error
1422          */
1423         if (!fh->io_allowed) {
1424                 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1425                 return -EACCES;
1426         }
1427         return videobuf_qbuf(&vpfe_dev->buffer_queue, p);
1428 }
1429
1430 static int vpfe_dqbuf(struct file *file, void *priv,
1431                       struct v4l2_buffer *buf)
1432 {
1433         struct vpfe_device *vpfe_dev = video_drvdata(file);
1434
1435         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n");
1436
1437         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
1438                 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1439                 return -EINVAL;
1440         }
1441         return videobuf_dqbuf(&vpfe_dev->buffer_queue,
1442                                       buf, file->f_flags & O_NONBLOCK);
1443 }
1444
1445 static int vpfe_queryctrl(struct file *file, void *priv,
1446                 struct v4l2_queryctrl *qctrl)
1447 {
1448         struct vpfe_device *vpfe_dev = video_drvdata(file);
1449         struct vpfe_subdev_info *sdinfo;
1450
1451         sdinfo = vpfe_dev->current_subdev;
1452
1453         return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1454                                          core, queryctrl, qctrl);
1455
1456 }
1457
1458 static int vpfe_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl)
1459 {
1460         struct vpfe_device *vpfe_dev = video_drvdata(file);
1461         struct vpfe_subdev_info *sdinfo;
1462
1463         sdinfo = vpfe_dev->current_subdev;
1464
1465         return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1466                                          core, g_ctrl, ctrl);
1467 }
1468
1469 static int vpfe_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl)
1470 {
1471         struct vpfe_device *vpfe_dev = video_drvdata(file);
1472         struct vpfe_subdev_info *sdinfo;
1473
1474         sdinfo = vpfe_dev->current_subdev;
1475
1476         return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1477                                          core, s_ctrl, ctrl);
1478 }
1479
1480 /*
1481  * vpfe_calculate_offsets : This function calculates buffers offset
1482  * for top and bottom field
1483  */
1484 static void vpfe_calculate_offsets(struct vpfe_device *vpfe_dev)
1485 {
1486         struct v4l2_rect image_win;
1487
1488         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_calculate_offsets\n");
1489
1490         ccdc_dev->hw_ops.get_image_window(&image_win);
1491         vpfe_dev->field_off = image_win.height * image_win.width;
1492 }
1493
1494 /* vpfe_start_ccdc_capture: start streaming in ccdc/isif */
1495 static void vpfe_start_ccdc_capture(struct vpfe_device *vpfe_dev)
1496 {
1497         ccdc_dev->hw_ops.enable(1);
1498         if (ccdc_dev->hw_ops.enable_out_to_sdram)
1499                 ccdc_dev->hw_ops.enable_out_to_sdram(1);
1500         vpfe_dev->started = 1;
1501 }
1502
1503 /*
1504  * vpfe_streamon. Assume the DMA queue is not empty.
1505  * application is expected to call QBUF before calling
1506  * this ioctl. If not, driver returns error
1507  */
1508 static int vpfe_streamon(struct file *file, void *priv,
1509                          enum v4l2_buf_type buf_type)
1510 {
1511         struct vpfe_device *vpfe_dev = video_drvdata(file);
1512         struct vpfe_fh *fh = file->private_data;
1513         struct vpfe_subdev_info *sdinfo;
1514         unsigned long addr;
1515         int ret = 0;
1516
1517         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n");
1518
1519         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
1520                 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1521                 return -EINVAL;
1522         }
1523
1524         /* If file handle is not allowed IO, return error */
1525         if (!fh->io_allowed) {
1526                 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1527                 return -EACCES;
1528         }
1529
1530         sdinfo = vpfe_dev->current_subdev;
1531         ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1532                                         video, s_stream, 1);
1533
1534         if (ret && (ret != -ENOIOCTLCMD)) {
1535                 v4l2_err(&vpfe_dev->v4l2_dev, "stream on failed in subdev\n");
1536                 return -EINVAL;
1537         }
1538
1539         /* If buffer queue is empty, return error */
1540         if (list_empty(&vpfe_dev->buffer_queue.stream)) {
1541                 v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n");
1542                 return -EIO;
1543         }
1544
1545         /* Call videobuf_streamon to start streaming * in videobuf */
1546         ret = videobuf_streamon(&vpfe_dev->buffer_queue);
1547         if (ret)
1548                 return ret;
1549
1550
1551         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1552         if (ret)
1553                 goto streamoff;
1554         /* Get the next frame from the buffer queue */
1555         vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
1556                                         struct videobuf_buffer, queue);
1557         vpfe_dev->cur_frm = vpfe_dev->next_frm;
1558         /* Remove buffer from the buffer queue */
1559         list_del(&vpfe_dev->cur_frm->queue);
1560         /* Mark state of the current frame to active */
1561         vpfe_dev->cur_frm->state = VIDEOBUF_ACTIVE;
1562         /* Initialize field_id and started member */
1563         vpfe_dev->field_id = 0;
1564         addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
1565
1566         /* Calculate field offset */
1567         vpfe_calculate_offsets(vpfe_dev);
1568
1569         if (vpfe_attach_irq(vpfe_dev) < 0) {
1570                 v4l2_err(&vpfe_dev->v4l2_dev,
1571                          "Error in attaching interrupt handle\n");
1572                 ret = -EFAULT;
1573                 goto unlock_out;
1574         }
1575         if (ccdc_dev->hw_ops.configure() < 0) {
1576                 v4l2_err(&vpfe_dev->v4l2_dev,
1577                          "Error in configuring ccdc\n");
1578                 ret = -EINVAL;
1579                 goto unlock_out;
1580         }
1581         ccdc_dev->hw_ops.setfbaddr((unsigned long)(addr));
1582         vpfe_start_ccdc_capture(vpfe_dev);
1583         mutex_unlock(&vpfe_dev->lock);
1584         return ret;
1585 unlock_out:
1586         mutex_unlock(&vpfe_dev->lock);
1587 streamoff:
1588         ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
1589         return ret;
1590 }
1591
1592 static int vpfe_streamoff(struct file *file, void *priv,
1593                           enum v4l2_buf_type buf_type)
1594 {
1595         struct vpfe_device *vpfe_dev = video_drvdata(file);
1596         struct vpfe_fh *fh = file->private_data;
1597         struct vpfe_subdev_info *sdinfo;
1598         int ret = 0;
1599
1600         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n");
1601
1602         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
1603                 v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
1604                 return -EINVAL;
1605         }
1606
1607         /* If io is allowed for this file handle, return error */
1608         if (!fh->io_allowed) {
1609                 v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
1610                 return -EACCES;
1611         }
1612
1613         /* If streaming is not started, return error */
1614         if (!vpfe_dev->started) {
1615                 v4l2_err(&vpfe_dev->v4l2_dev, "device started\n");
1616                 return -EINVAL;
1617         }
1618
1619         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1620         if (ret)
1621                 return ret;
1622
1623         vpfe_stop_ccdc_capture(vpfe_dev);
1624         vpfe_detach_irq(vpfe_dev);
1625
1626         sdinfo = vpfe_dev->current_subdev;
1627         ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
1628                                         video, s_stream, 0);
1629
1630         if (ret && (ret != -ENOIOCTLCMD))
1631                 v4l2_err(&vpfe_dev->v4l2_dev, "stream off failed in subdev\n");
1632         ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
1633         mutex_unlock(&vpfe_dev->lock);
1634         return ret;
1635 }
1636
1637 static int vpfe_cropcap(struct file *file, void *priv,
1638                               struct v4l2_cropcap *crop)
1639 {
1640         struct vpfe_device *vpfe_dev = video_drvdata(file);
1641
1642         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_cropcap\n");
1643
1644         if (vpfe_dev->std_index >= ARRAY_SIZE(vpfe_standards))
1645                 return -EINVAL;
1646
1647         memset(crop, 0, sizeof(struct v4l2_cropcap));
1648         crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1649         crop->bounds.width = crop->defrect.width =
1650                 vpfe_standards[vpfe_dev->std_index].width;
1651         crop->bounds.height = crop->defrect.height =
1652                 vpfe_standards[vpfe_dev->std_index].height;
1653         crop->pixelaspect = vpfe_standards[vpfe_dev->std_index].pixelaspect;
1654         return 0;
1655 }
1656
1657 static int vpfe_g_crop(struct file *file, void *priv,
1658                              struct v4l2_crop *crop)
1659 {
1660         struct vpfe_device *vpfe_dev = video_drvdata(file);
1661
1662         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_crop\n");
1663
1664         crop->c = vpfe_dev->crop;
1665         return 0;
1666 }
1667
1668 static int vpfe_s_crop(struct file *file, void *priv,
1669                              struct v4l2_crop *crop)
1670 {
1671         struct vpfe_device *vpfe_dev = video_drvdata(file);
1672         int ret = 0;
1673
1674         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_crop\n");
1675
1676         if (vpfe_dev->started) {
1677                 /* make sure streaming is not started */
1678                 v4l2_err(&vpfe_dev->v4l2_dev,
1679                         "Cannot change crop when streaming is ON\n");
1680                 return -EBUSY;
1681         }
1682
1683         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1684         if (ret)
1685                 return ret;
1686
1687         if (crop->c.top < 0 || crop->c.left < 0) {
1688                 v4l2_err(&vpfe_dev->v4l2_dev,
1689                         "doesn't support negative values for top & left\n");
1690                 ret = -EINVAL;
1691                 goto unlock_out;
1692         }
1693
1694         /* adjust the width to 16 pixel boundry */
1695         crop->c.width = ((crop->c.width + 15) & ~0xf);
1696
1697         /* make sure parameters are valid */
1698         if ((crop->c.left + crop->c.width >
1699                 vpfe_dev->std_info.active_pixels) ||
1700             (crop->c.top + crop->c.height >
1701                 vpfe_dev->std_info.active_lines)) {
1702                 v4l2_err(&vpfe_dev->v4l2_dev, "Error in S_CROP params\n");
1703                 ret = -EINVAL;
1704                 goto unlock_out;
1705         }
1706         ccdc_dev->hw_ops.set_image_window(&crop->c);
1707         vpfe_dev->fmt.fmt.pix.width = crop->c.width;
1708         vpfe_dev->fmt.fmt.pix.height = crop->c.height;
1709         vpfe_dev->fmt.fmt.pix.bytesperline =
1710                 ccdc_dev->hw_ops.get_line_length();
1711         vpfe_dev->fmt.fmt.pix.sizeimage =
1712                 vpfe_dev->fmt.fmt.pix.bytesperline *
1713                 vpfe_dev->fmt.fmt.pix.height;
1714         vpfe_dev->crop = crop->c;
1715 unlock_out:
1716         mutex_unlock(&vpfe_dev->lock);
1717         return ret;
1718 }
1719
1720
1721 static long vpfe_param_handler(struct file *file, void *priv,
1722                 int cmd, void *param)
1723 {
1724         struct vpfe_device *vpfe_dev = video_drvdata(file);
1725         int ret = 0;
1726
1727         v4l2_dbg(2, debug, &vpfe_dev->v4l2_dev, "vpfe_param_handler\n");
1728
1729         if (vpfe_dev->started) {
1730                 /* only allowed if streaming is not started */
1731                 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1732                         "device already started\n");
1733                 return -EBUSY;
1734         }
1735
1736         ret = mutex_lock_interruptible(&vpfe_dev->lock);
1737         if (ret)
1738                 return ret;
1739
1740         switch (cmd) {
1741         case VPFE_CMD_S_CCDC_RAW_PARAMS:
1742                 v4l2_warn(&vpfe_dev->v4l2_dev,
1743                           "VPFE_CMD_S_CCDC_RAW_PARAMS: experimental ioctl\n");
1744                 if (ccdc_dev->hw_ops.set_params) {
1745                         ret = ccdc_dev->hw_ops.set_params(param);
1746                         if (ret) {
1747                                 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1748                                         "Error setting parameters in CCDC\n");
1749                                 goto unlock_out;
1750                         }
1751                         if (vpfe_get_ccdc_image_format(vpfe_dev,
1752                                                        &vpfe_dev->fmt) < 0) {
1753                                 v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1754                                         "Invalid image format at CCDC\n");
1755                                 goto unlock_out;
1756                         }
1757                 } else {
1758                         ret = -EINVAL;
1759                         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1760                                 "VPFE_CMD_S_CCDC_RAW_PARAMS not supported\n");
1761                 }
1762                 break;
1763         default:
1764                 ret = -EINVAL;
1765         }
1766 unlock_out:
1767         mutex_unlock(&vpfe_dev->lock);
1768         return ret;
1769 }
1770
1771
1772 /* vpfe capture ioctl operations */
1773 static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
1774         .vidioc_querycap         = vpfe_querycap,
1775         .vidioc_g_fmt_vid_cap    = vpfe_g_fmt_vid_cap,
1776         .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt_vid_cap,
1777         .vidioc_s_fmt_vid_cap    = vpfe_s_fmt_vid_cap,
1778         .vidioc_try_fmt_vid_cap  = vpfe_try_fmt_vid_cap,
1779         .vidioc_enum_input       = vpfe_enum_input,
1780         .vidioc_g_input          = vpfe_g_input,
1781         .vidioc_s_input          = vpfe_s_input,
1782         .vidioc_querystd         = vpfe_querystd,
1783         .vidioc_s_std            = vpfe_s_std,
1784         .vidioc_g_std            = vpfe_g_std,
1785         .vidioc_queryctrl        = vpfe_queryctrl,
1786         .vidioc_g_ctrl           = vpfe_g_ctrl,
1787         .vidioc_s_ctrl           = vpfe_s_ctrl,
1788         .vidioc_reqbufs          = vpfe_reqbufs,
1789         .vidioc_querybuf         = vpfe_querybuf,
1790         .vidioc_qbuf             = vpfe_qbuf,
1791         .vidioc_dqbuf            = vpfe_dqbuf,
1792         .vidioc_streamon         = vpfe_streamon,
1793         .vidioc_streamoff        = vpfe_streamoff,
1794         .vidioc_cropcap          = vpfe_cropcap,
1795         .vidioc_g_crop           = vpfe_g_crop,
1796         .vidioc_s_crop           = vpfe_s_crop,
1797         .vidioc_default          = vpfe_param_handler,
1798 };
1799
1800 static struct vpfe_device *vpfe_initialize(void)
1801 {
1802         struct vpfe_device *vpfe_dev;
1803
1804         /* Default number of buffers should be 3 */
1805         if ((numbuffers > 0) &&
1806             (numbuffers < config_params.min_numbuffers))
1807                 numbuffers = config_params.min_numbuffers;
1808
1809         /*
1810          * Set buffer size to min buffers size if invalid buffer size is
1811          * given
1812          */
1813         if (bufsize < config_params.min_bufsize)
1814                 bufsize = config_params.min_bufsize;
1815
1816         config_params.numbuffers = numbuffers;
1817
1818         if (numbuffers)
1819                 config_params.device_bufsize = bufsize;
1820
1821         /* Allocate memory for device objects */
1822         vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL);
1823
1824         return vpfe_dev;
1825 }
1826
1827 /*
1828  * vpfe_probe : This function creates device entries by register
1829  * itself to the V4L2 driver and initializes fields of each
1830  * device objects
1831  */
1832 static __init int vpfe_probe(struct platform_device *pdev)
1833 {
1834         struct vpfe_subdev_info *sdinfo;
1835         struct vpfe_config *vpfe_cfg;
1836         struct resource *res1;
1837         struct vpfe_device *vpfe_dev;
1838         struct i2c_adapter *i2c_adap;
1839         struct video_device *vfd;
1840         int ret = -ENOMEM, i, j;
1841         int num_subdevs = 0;
1842
1843         /* Get the pointer to the device object */
1844         vpfe_dev = vpfe_initialize();
1845
1846         if (!vpfe_dev) {
1847                 v4l2_err(pdev->dev.driver,
1848                         "Failed to allocate memory for vpfe_dev\n");
1849                 return ret;
1850         }
1851
1852         vpfe_dev->pdev = &pdev->dev;
1853
1854         if (NULL == pdev->dev.platform_data) {
1855                 v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
1856                 ret = -ENODEV;
1857                 goto probe_free_dev_mem;
1858         }
1859
1860         vpfe_cfg = pdev->dev.platform_data;
1861         vpfe_dev->cfg = vpfe_cfg;
1862         if (NULL == vpfe_cfg->ccdc ||
1863             NULL == vpfe_cfg->card_name ||
1864             NULL == vpfe_cfg->sub_devs) {
1865                 v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n");
1866                 ret = -ENOENT;
1867                 goto probe_free_dev_mem;
1868         }
1869
1870         /* Allocate memory for ccdc configuration */
1871         ccdc_cfg = kmalloc(sizeof(struct ccdc_config), GFP_KERNEL);
1872         if (NULL == ccdc_cfg) {
1873                 v4l2_err(pdev->dev.driver,
1874                          "Memory allocation failed for ccdc_cfg\n");
1875                 goto probe_free_lock;
1876         }
1877
1878         mutex_lock(&ccdc_lock);
1879
1880         strncpy(ccdc_cfg->name, vpfe_cfg->ccdc, 32);
1881         /* Get VINT0 irq resource */
1882         res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1883         if (!res1) {
1884                 v4l2_err(pdev->dev.driver,
1885                          "Unable to get interrupt for VINT0\n");
1886                 ret = -ENODEV;
1887                 goto probe_free_ccdc_cfg_mem;
1888         }
1889         vpfe_dev->ccdc_irq0 = res1->start;
1890
1891         /* Get VINT1 irq resource */
1892         res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
1893         if (!res1) {
1894                 v4l2_err(pdev->dev.driver,
1895                          "Unable to get interrupt for VINT1\n");
1896                 ret = -ENODEV;
1897                 goto probe_free_ccdc_cfg_mem;
1898         }
1899         vpfe_dev->ccdc_irq1 = res1->start;
1900
1901         ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, IRQF_DISABLED,
1902                           "vpfe_capture0", vpfe_dev);
1903
1904         if (0 != ret) {
1905                 v4l2_err(pdev->dev.driver, "Unable to request interrupt\n");
1906                 goto probe_free_ccdc_cfg_mem;
1907         }
1908
1909         /* Allocate memory for video device */
1910         vfd = video_device_alloc();
1911         if (NULL == vfd) {
1912                 ret = -ENOMEM;
1913                 v4l2_err(pdev->dev.driver, "Unable to alloc video device\n");
1914                 goto probe_out_release_irq;
1915         }
1916
1917         /* Initialize field of video device */
1918         vfd->release            = video_device_release;
1919         vfd->fops               = &vpfe_fops;
1920         vfd->ioctl_ops          = &vpfe_ioctl_ops;
1921         vfd->tvnorms            = 0;
1922         vfd->current_norm       = V4L2_STD_PAL;
1923         vfd->v4l2_dev           = &vpfe_dev->v4l2_dev;
1924         snprintf(vfd->name, sizeof(vfd->name),
1925                  "%s_V%d.%d.%d",
1926                  CAPTURE_DRV_NAME,
1927                  (VPFE_CAPTURE_VERSION_CODE >> 16) & 0xff,
1928                  (VPFE_CAPTURE_VERSION_CODE >> 8) & 0xff,
1929                  (VPFE_CAPTURE_VERSION_CODE) & 0xff);
1930         /* Set video_dev to the video device */
1931         vpfe_dev->video_dev     = vfd;
1932
1933         ret = v4l2_device_register(&pdev->dev, &vpfe_dev->v4l2_dev);
1934         if (ret) {
1935                 v4l2_err(pdev->dev.driver,
1936                         "Unable to register v4l2 device.\n");
1937                 goto probe_out_video_release;
1938         }
1939         v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n");
1940         spin_lock_init(&vpfe_dev->irqlock);
1941         spin_lock_init(&vpfe_dev->dma_queue_lock);
1942         mutex_init(&vpfe_dev->lock);
1943
1944         /* Initialize field of the device objects */
1945         vpfe_dev->numbuffers = config_params.numbuffers;
1946
1947         /* Initialize prio member of device object */
1948         v4l2_prio_init(&vpfe_dev->prio);
1949         /* register video device */
1950         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1951                 "trying to register vpfe device.\n");
1952         v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
1953                 "video_dev=%x\n", (int)&vpfe_dev->video_dev);
1954         vpfe_dev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1955         ret = video_register_device(vpfe_dev->video_dev,
1956                                     VFL_TYPE_GRABBER, -1);
1957
1958         if (ret) {
1959                 v4l2_err(pdev->dev.driver,
1960                         "Unable to register video device.\n");
1961                 goto probe_out_v4l2_unregister;
1962         }
1963
1964         v4l2_info(&vpfe_dev->v4l2_dev, "video device registered\n");
1965         /* set the driver data in platform device */
1966         platform_set_drvdata(pdev, vpfe_dev);
1967         /* set driver private data */
1968         video_set_drvdata(vpfe_dev->video_dev, vpfe_dev);
1969         i2c_adap = i2c_get_adapter(vpfe_cfg->i2c_adapter_id);
1970         num_subdevs = vpfe_cfg->num_subdevs;
1971         vpfe_dev->sd = kmalloc(sizeof(struct v4l2_subdev *) * num_subdevs,
1972                                 GFP_KERNEL);
1973         if (NULL == vpfe_dev->sd) {
1974                 v4l2_err(&vpfe_dev->v4l2_dev,
1975                         "unable to allocate memory for subdevice pointers\n");
1976                 ret = -ENOMEM;
1977                 goto probe_out_video_unregister;
1978         }
1979
1980         for (i = 0; i < num_subdevs; i++) {
1981                 struct v4l2_input *inps;
1982
1983                 sdinfo = &vpfe_cfg->sub_devs[i];
1984
1985                 /* Load up the subdevice */
1986                 vpfe_dev->sd[i] =
1987                         v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev,
1988                                                   i2c_adap,
1989                                                   NULL,
1990                                                   &sdinfo->board_info,
1991                                                   NULL);
1992                 if (vpfe_dev->sd[i]) {
1993                         v4l2_info(&vpfe_dev->v4l2_dev,
1994                                   "v4l2 sub device %s registered\n",
1995                                   sdinfo->name);
1996                         vpfe_dev->sd[i]->grp_id = sdinfo->grp_id;
1997                         /* update tvnorms from the sub devices */
1998                         for (j = 0; j < sdinfo->num_inputs; j++) {
1999                                 inps = &sdinfo->inputs[j];
2000                                 vfd->tvnorms |= inps->std;
2001                         }
2002                 } else {
2003                         v4l2_info(&vpfe_dev->v4l2_dev,
2004                                   "v4l2 sub device %s register fails\n",
2005                                   sdinfo->name);
2006                         goto probe_sd_out;
2007                 }
2008         }
2009
2010         /* set first sub device as current one */
2011         vpfe_dev->current_subdev = &vpfe_cfg->sub_devs[0];
2012
2013         /* We have at least one sub device to work with */
2014         mutex_unlock(&ccdc_lock);
2015         return 0;
2016
2017 probe_sd_out:
2018         kfree(vpfe_dev->sd);
2019 probe_out_video_unregister:
2020         video_unregister_device(vpfe_dev->video_dev);
2021 probe_out_v4l2_unregister:
2022         v4l2_device_unregister(&vpfe_dev->v4l2_dev);
2023 probe_out_video_release:
2024         if (!video_is_registered(vpfe_dev->video_dev))
2025                 video_device_release(vpfe_dev->video_dev);
2026 probe_out_release_irq:
2027         free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
2028 probe_free_ccdc_cfg_mem:
2029         kfree(ccdc_cfg);
2030 probe_free_lock:
2031         mutex_unlock(&ccdc_lock);
2032 probe_free_dev_mem:
2033         kfree(vpfe_dev);
2034         return ret;
2035 }
2036
2037 /*
2038  * vpfe_remove : It un-register device from V4L2 driver
2039  */
2040 static int __devexit vpfe_remove(struct platform_device *pdev)
2041 {
2042         struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev);
2043
2044         v4l2_info(pdev->dev.driver, "vpfe_remove\n");
2045
2046         free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
2047         kfree(vpfe_dev->sd);
2048         v4l2_device_unregister(&vpfe_dev->v4l2_dev);
2049         video_unregister_device(vpfe_dev->video_dev);
2050         kfree(vpfe_dev);
2051         kfree(ccdc_cfg);
2052         return 0;
2053 }
2054
2055 static int vpfe_suspend(struct device *dev)
2056 {
2057         return 0;
2058 }
2059
2060 static int vpfe_resume(struct device *dev)
2061 {
2062         return 0;
2063 }
2064
2065 static const struct dev_pm_ops vpfe_dev_pm_ops = {
2066         .suspend = vpfe_suspend,
2067         .resume = vpfe_resume,
2068 };
2069
2070 static struct platform_driver vpfe_driver = {
2071         .driver = {
2072                 .name = CAPTURE_DRV_NAME,
2073                 .owner = THIS_MODULE,
2074                 .pm = &vpfe_dev_pm_ops,
2075         },
2076         .probe = vpfe_probe,
2077         .remove = __devexit_p(vpfe_remove),
2078 };
2079
2080 static __init int vpfe_init(void)
2081 {
2082         printk(KERN_NOTICE "vpfe_init\n");
2083         /* Register driver to the kernel */
2084         return platform_driver_register(&vpfe_driver);
2085 }
2086
2087 /*
2088  * vpfe_cleanup : This function un-registers device driver
2089  */
2090 static void vpfe_cleanup(void)
2091 {
2092         platform_driver_unregister(&vpfe_driver);
2093 }
2094
2095 module_init(vpfe_init);
2096 module_exit(vpfe_cleanup);