git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/zoran_driver.c

   1 /*
   2  * Zoran zr36057/zr36067 PCI controller driver, for the
   3  * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
   4  * Media Labs LML33/LML33R10.
   5  *
   6  * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
   7  *
   8  * Changes for BUZ by Wolfgang Scherr <scherr@net4you.net>
   9  *
  10  * Changes for DC10/DC30 by Laurent Pinchart <laurent.pinchart@skynet.be>
  11  *
  12  * Changes for LML33R10 by Maxim Yevtyushkin <max@linuxmedialabs.com>
  13  *
  14  * Changes for videodev2/v4l2 by Ronald Bultje <rbultje@ronald.bitfreak.net>
  15  *
  16  * Based on
  17  *
  18  * Miro DC10 driver
  19  * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
  20  *
  21  * Iomega Buz driver version 1.0
  22  * Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
  23  *
  24  * buz.0.0.3
  25  * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
  26  *
  27  * bttv - Bt848 frame grabber driver
  28  * Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
  29  *                        & Marcus Metzler (mocm@thp.uni-koeln.de)
  30  *
  31  *
  32  * This program is free software; you can redistribute it and/or modify
  33  * it under the terms of the GNU General Public License as published by
  34  * the Free Software Foundation; either version 2 of the License, or
  35  * (at your option) any later version.
  36  *
  37  * This program is distributed in the hope that it will be useful,
  38  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  39  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  40  * GNU General Public License for more details.
  41  *
  42  * You should have received a copy of the GNU General Public License
  43  * along with this program; if not, write to the Free Software
  44  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  45  */
  46
  47 #include <linux/version.h>
  48 #include <linux/init.h>
  49 #include <linux/module.h>
  50 #include <linux/delay.h>
  51 #include <linux/slab.h>
  52 #include <linux/pci.h>
  53 #include <linux/vmalloc.h>
  54 #include <linux/wait.h>
  55 #include <linux/byteorder/generic.h>
  56
  57 #include <linux/interrupt.h>
  58 #include <linux/i2c.h>
  59 #include <linux/i2c-algo-bit.h>
  60
  61 #include <linux/spinlock.h>
  62 #define     MAP_NR(x)       virt_to_page(x)
  63 #define     ZORAN_HARDWARE  VID_HARDWARE_ZR36067
  64 #define     ZORAN_VID_TYPE  ( \
  65                                 VID_TYPE_CAPTURE | \
  66                                 VID_TYPE_OVERLAY | \
  67                                 VID_TYPE_CLIPPING | \
  68                                 VID_TYPE_FRAMERAM | \
  69                                 VID_TYPE_SCALES | \
  70                                 VID_TYPE_MJPEG_DECODER | \
  71                                 VID_TYPE_MJPEG_ENCODER \
  72                              )
  73
  74 #include <linux/videodev.h>
  75 #include <media/v4l2-common.h>
  76 #include "videocodec.h"
  77
  78 #include <asm/io.h>
  79 #include <asm/uaccess.h>
  80 #include <linux/proc_fs.h>
  81
  82 #include <linux/video_decoder.h>
  83 #include <linux/video_encoder.h>
  84 #include <linux/mutex.h>
  85 #include "zoran.h"
  86 #include "zoran_device.h"
  87 #include "zoran_card.h"
  88
  89 #ifdef CONFIG_VIDEO_V4L2
  90         /* we declare some card type definitions here, they mean
  91          * the same as the v4l1 ZORAN_VID_TYPE above, except it's v4l2 */
  92 #define ZORAN_V4L2_VID_FLAGS ( \
  93                                 V4L2_CAP_STREAMING |\
  94                                 V4L2_CAP_VIDEO_CAPTURE |\
  95                                 V4L2_CAP_VIDEO_OUTPUT |\
  96                                 V4L2_CAP_VIDEO_OVERLAY \
  97                               )
  98 #endif
  99
 100 #include <asm/byteorder.h>
 101
 102 const struct zoran_format zoran_formats[] = {
 103         {
 104                 .name = "15-bit RGB",
 105                 .palette = VIDEO_PALETTE_RGB555,
 106 #ifdef CONFIG_VIDEO_V4L2
 107 #ifdef __LITTLE_ENDIAN
 108                 .fourcc = V4L2_PIX_FMT_RGB555,
 109 #else
 110                 .fourcc = V4L2_PIX_FMT_RGB555X,
 111 #endif
 112                 .colorspace = V4L2_COLORSPACE_SRGB,
 113 #endif
 114                 .depth = 15,
 115                 .flags = ZORAN_FORMAT_CAPTURE |
 116                          ZORAN_FORMAT_OVERLAY,
 117         }, {
 118                 .name = "16-bit RGB",
 119                 .palette = VIDEO_PALETTE_RGB565,
 120 #ifdef CONFIG_VIDEO_V4L2
 121 #ifdef __LITTLE_ENDIAN
 122                 .fourcc = V4L2_PIX_FMT_RGB565,
 123 #else
 124                 .fourcc = V4L2_PIX_FMT_RGB565X,
 125 #endif
 126                 .colorspace = V4L2_COLORSPACE_SRGB,
 127 #endif
 128                 .depth = 16,
 129                 .flags = ZORAN_FORMAT_CAPTURE |
 130                          ZORAN_FORMAT_OVERLAY,
 131         }, {
 132                 .name = "24-bit RGB",
 133                 .palette = VIDEO_PALETTE_RGB24,
 134 #ifdef CONFIG_VIDEO_V4L2
 135 #ifdef __LITTLE_ENDIAN
 136                 .fourcc = V4L2_PIX_FMT_BGR24,
 137 #else
 138                 .fourcc = V4L2_PIX_FMT_RGB24,
 139 #endif
 140                 .colorspace = V4L2_COLORSPACE_SRGB,
 141 #endif
 142                 .depth = 24,
 143                 .flags = ZORAN_FORMAT_CAPTURE |
 144                          ZORAN_FORMAT_OVERLAY,
 145         }, {
 146                 .name = "32-bit RGB",
 147                 .palette = VIDEO_PALETTE_RGB32,
 148 #ifdef CONFIG_VIDEO_V4L2
 149 #ifdef __LITTLE_ENDIAN
 150                 .fourcc = V4L2_PIX_FMT_BGR32,
 151 #else
 152                 .fourcc = V4L2_PIX_FMT_RGB32,
 153 #endif
 154                 .colorspace = V4L2_COLORSPACE_SRGB,
 155 #endif
 156                 .depth = 32,
 157                 .flags = ZORAN_FORMAT_CAPTURE |
 158                          ZORAN_FORMAT_OVERLAY,
 159         }, {
 160                 .name = "4:2:2, packed, YUYV",
 161                 .palette = VIDEO_PALETTE_YUV422,
 162 #ifdef CONFIG_VIDEO_V4L2
 163                 .fourcc = V4L2_PIX_FMT_YUYV,
 164                 .colorspace = V4L2_COLORSPACE_SMPTE170M,
 165 #endif
 166                 .depth = 16,
 167                 .flags = ZORAN_FORMAT_CAPTURE |
 168                          ZORAN_FORMAT_OVERLAY,
 169         }, {
 170                 .name = "Hardware-encoded Motion-JPEG",
 171                 .palette = -1,
 172 #ifdef CONFIG_VIDEO_V4L2
 173                 .fourcc = V4L2_PIX_FMT_MJPEG,
 174                 .colorspace = V4L2_COLORSPACE_SMPTE170M,
 175 #endif
 176                 .depth = 0,
 177                 .flags = ZORAN_FORMAT_CAPTURE |
 178                          ZORAN_FORMAT_PLAYBACK |
 179                          ZORAN_FORMAT_COMPRESSED,
 180         }
 181 };
 182 static const int zoran_num_formats =
 183     (sizeof(zoran_formats) / sizeof(struct zoran_format));
 184
 185 // RJ: Test only - want to test BUZ_USE_HIMEM even when CONFIG_BIGPHYS_AREA is defined
 186 #if !defined(CONFIG_BIGPHYS_AREA)
 187 //#undef CONFIG_BIGPHYS_AREA
 188 #define BUZ_USE_HIMEM
 189 #endif
 190
 191 #if defined(CONFIG_BIGPHYS_AREA)
 192 #   include <linux/bigphysarea.h>
 193 #endif
 194
 195 extern int *zr_debug;
 196
 197 #define dprintk(num, format, args...) \
 198         do { \
 199                 if (*zr_debug >= num) \
 200                         printk(format, ##args); \
 201         } while (0)
 202
 203 extern int v4l_nbufs;
 204 extern int v4l_bufsize;
 205 extern int jpg_nbufs;
 206 extern int jpg_bufsize;
 207 extern int pass_through;
 208
 209 static int lock_norm = 0;       /* 1=Don't change TV standard (norm) */
 210 module_param(lock_norm, int, 0);
 211 MODULE_PARM_DESC(lock_norm, "Users can't change norm");
 212
 213 #ifdef CONFIG_VIDEO_V4L2
 214         /* small helper function for calculating buffersizes for v4l2
 215          * we calculate the nearest higher power-of-two, which
 216          * will be the recommended buffersize */
 217 static __u32
 218 zoran_v4l2_calc_bufsize (struct zoran_jpg_settings *settings)
 219 {
 220         __u8 div = settings->VerDcm * settings->HorDcm * settings->TmpDcm;
 221         __u32 num = (1024 * 512) / (div);
 222         __u32 result = 2;
 223
 224         num--;
 225         while (num) {
 226                 num >>= 1;
 227                 result <<= 1;
 228         }
 229
 230         if (result > jpg_bufsize)
 231                 return jpg_bufsize;
 232         if (result < 8192)
 233                 return 8192;
 234         return result;
 235 }
 236 #endif
 237
 238 /* forward references */
 239 static void v4l_fbuffer_free(struct file *file);
 240 static void jpg_fbuffer_free(struct file *file);
 241
 242 /*
 243  *   Allocate the V4L grab buffers
 244  *
 245  *   These have to be pysically contiguous.
 246  *   If v4l_bufsize <= MAX_KMALLOC_MEM we use kmalloc
 247  *   else we try to allocate them with bigphysarea_alloc_pages
 248  *   if the bigphysarea patch is present in the kernel,
 249  *   else we try to use high memory (if the user has bootet
 250  *   Linux with the necessary memory left over).
 251  */
 252
 253 #if defined(BUZ_USE_HIMEM) && !defined(CONFIG_BIGPHYS_AREA)
 254 static unsigned long
 255 get_high_mem (unsigned long size)
 256 {
 257 /*
 258  * Check if there is usable memory at the end of Linux memory
 259  * of at least size. Return the physical address of this memory,
 260  * return 0 on failure.
 261  *
 262  * The idea is from Alexandro Rubini's book "Linux device drivers".
 263  * The driver from him which is downloadable from O'Reilly's
 264  * web site misses the "virt_to_phys(high_memory)" part
 265  * (and therefore doesn't work at all - at least with 2.2.x kernels).
 266  *
 267  * It should be unnecessary to mention that THIS IS DANGEROUS,
 268  * if more than one driver at a time has the idea to use this memory!!!!
 269  */
 270
 271         volatile unsigned char __iomem *mem;
 272         unsigned char c;
 273         unsigned long hi_mem_ph;
 274         unsigned long i;
 275
 276         /* Map the high memory to user space */
 277
 278         hi_mem_ph = virt_to_phys(high_memory);
 279
 280         mem = ioremap(hi_mem_ph, size);
 281         if (!mem) {
 282                 dprintk(1,
 283                         KERN_ERR "%s: get_high_mem() - ioremap failed\n",
 284                         ZORAN_NAME);
 285                 return 0;
 286         }
 287
 288         for (i = 0; i < size; i++) {
 289                 /* Check if it is memory */
 290                 c = i & 0xff;
 291                 writeb(c, mem + i);
 292                 if (readb(mem + i) != c)
 293                         break;
 294                 c = 255 - c;
 295                 writeb(c, mem + i);
 296                 if (readb(mem + i) != c)
 297                         break;
 298                 writeb(0, mem + i);     /* zero out memory */
 299
 300                 /* give the kernel air to breath */
 301                 if ((i & 0x3ffff) == 0x3ffff)
 302                         schedule();
 303         }
 304
 305         iounmap(mem);
 306
 307         if (i != size) {
 308                 dprintk(1,
 309                         KERN_ERR
 310                         "%s: get_high_mem() - requested %lu, avail %lu\n",
 311                         ZORAN_NAME, size, i);
 312                 return 0;
 313         }
 314
 315         return hi_mem_ph;
 316 }
 317 #endif
 318
 319 static int
 320 v4l_fbuffer_alloc (struct file *file)
 321 {
 322         struct zoran_fh *fh = file->private_data;
 323         struct zoran *zr = fh->zr;
 324         int i, off;
 325         unsigned char *mem;
 326 #if defined(BUZ_USE_HIMEM) && !defined(CONFIG_BIGPHYS_AREA)
 327         unsigned long pmem = 0;
 328 #endif
 329
 330         /* we might have old buffers lying around... */
 331         if (fh->v4l_buffers.ready_to_be_freed) {
 332                 v4l_fbuffer_free(file);
 333         }
 334
 335         for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
 336                 if (fh->v4l_buffers.buffer[i].fbuffer)
 337                         dprintk(2,
 338                                 KERN_WARNING
 339                                 "%s: v4l_fbuffer_alloc() - buffer %d allready allocated!?\n",
 340                                 ZR_DEVNAME(zr), i);
 341
 342                 //udelay(20);
 343                 if (fh->v4l_buffers.buffer_size <= MAX_KMALLOC_MEM) {
 344                         /* Use kmalloc */
 345
 346                         mem =
 347                             (unsigned char *) kmalloc(fh->v4l_buffers.
 348                                                       buffer_size,
 349                                                       GFP_KERNEL);
 350                         if (mem == 0) {
 351                                 dprintk(1,
 352                                         KERN_ERR
 353                                         "%s: v4l_fbuffer_alloc() - kmalloc for V4L buf %d failed\n",
 354                                         ZR_DEVNAME(zr), i);
 355                                 v4l_fbuffer_free(file);
 356                                 return -ENOBUFS;
 357                         }
 358                         fh->v4l_buffers.buffer[i].fbuffer = mem;
 359                         fh->v4l_buffers.buffer[i].fbuffer_phys =
 360                             virt_to_phys(mem);
 361                         fh->v4l_buffers.buffer[i].fbuffer_bus =
 362                             virt_to_bus(mem);
 363                         for (off = 0; off < fh->v4l_buffers.buffer_size;
 364                              off += PAGE_SIZE)
 365                                 SetPageReserved(MAP_NR(mem + off));
 366                         dprintk(4,
 367                                 KERN_INFO
 368                                 "%s: v4l_fbuffer_alloc() - V4L frame %d mem 0x%lx (bus: 0x%lx)\n",
 369                                 ZR_DEVNAME(zr), i, (unsigned long) mem,
 370                                 virt_to_bus(mem));
 371                 } else {
 372 #if defined(CONFIG_BIGPHYS_AREA)
 373                         /* Use bigphysarea_alloc_pages */
 374
 375                         int n =
 376                             (fh->v4l_buffers.buffer_size + PAGE_SIZE -
 377                              1) / PAGE_SIZE;
 378
 379                         mem =
 380                             (unsigned char *) bigphysarea_alloc_pages(n, 0,
 381                                                                       GFP_KERNEL);
 382                         if (mem == 0) {
 383                                 dprintk(1,
 384                                         KERN_ERR
 385                                         "%s: v4l_fbuffer_alloc() - bigphysarea_alloc_pages for V4L buf %d failed\n",
 386                                         ZR_DEVNAME(zr), i);
 387                                 v4l_fbuffer_free(file);
 388                                 return -ENOBUFS;
 389                         }
 390                         fh->v4l_buffers.buffer[i].fbuffer = mem;
 391                         fh->v4l_buffers.buffer[i].fbuffer_phys =
 392                             virt_to_phys(mem);
 393                         fh->v4l_buffers.buffer[i].fbuffer_bus =
 394                             virt_to_bus(mem);
 395                         dprintk(4,
 396                                 KERN_INFO
 397                                 "%s: Bigphysarea frame %d mem 0x%x (bus: 0x%x)\n",
 398                                 ZR_DEVNAME(zr), i, (unsigned) mem,
 399                                 (unsigned) virt_to_bus(mem));
 400
 401                         /* Zero out the allocated memory */
 402                         memset(fh->v4l_buffers.buffer[i].fbuffer, 0,
 403                                fh->v4l_buffers.buffer_size);
 404 #elif defined(BUZ_USE_HIMEM)
 405
 406                         /* Use high memory which has been left at boot time */
 407
 408                         /* Ok., Ok. this is an evil hack - we make
 409                          * the assumption that physical addresses are
 410                          * the same as bus addresses (true at least
 411                          * for Intel processors). The whole method of
 412                          * obtaining and using this memory is not very
 413                          * nice - but I hope it saves some poor users
 414                          * from kernel hacking, which might have even
 415                          * more evil results */
 416
 417                         if (i == 0) {
 418                                 int size =
 419                                     fh->v4l_buffers.num_buffers *
 420                                     fh->v4l_buffers.buffer_size;
 421
 422                                 pmem = get_high_mem(size);
 423                                 if (pmem == 0) {
 424                                         dprintk(1,
 425                                                 KERN_ERR
 426                                                 "%s: v4l_fbuffer_alloc() - get_high_mem (size = %d KB) for V4L bufs failed\n",
 427                                                 ZR_DEVNAME(zr), size >> 10);
 428                                         return -ENOBUFS;
 429                                 }
 430                                 fh->v4l_buffers.buffer[0].fbuffer = NULL;
 431                                 fh->v4l_buffers.buffer[0].fbuffer_phys = pmem;
 432                                 fh->v4l_buffers.buffer[0].fbuffer_bus = pmem;
 433                                 dprintk(4,
 434                                         KERN_INFO
 435                                         "%s: v4l_fbuffer_alloc() - using %d KB high memory\n",
 436                                         ZR_DEVNAME(zr), size >> 10);
 437                         } else {
 438                                 fh->v4l_buffers.buffer[i].fbuffer = NULL;
 439                                 fh->v4l_buffers.buffer[i].fbuffer_phys =
 440                                     pmem + i * fh->v4l_buffers.buffer_size;
 441                                 fh->v4l_buffers.buffer[i].fbuffer_bus =
 442                                     pmem + i * fh->v4l_buffers.buffer_size;
 443                         }
 444 #else
 445                         /* No bigphysarea present, usage of high memory disabled,
 446                          * but user wants buffers of more than MAX_KMALLOC_MEM */
 447                         dprintk(1,
 448                                 KERN_ERR
 449                                 "%s: v4l_fbuffer_alloc() - no bigphysarea_patch present, usage of high memory disabled,\n",
 450                                 ZR_DEVNAME(zr));
 451                         dprintk(1,
 452                                 KERN_ERR
 453                                 "%s: v4l_fbuffer_alloc() - sorry, could not allocate %d V4L buffers of size %d KB.\n",
 454                                 ZR_DEVNAME(zr), fh->v4l_buffers.num_buffers,
 455                                 fh->v4l_buffers.buffer_size >> 10);
 456                         return -ENOBUFS;
 457 #endif
 458                 }
 459         }
 460
 461         fh->v4l_buffers.allocated = 1;
 462
 463         return 0;
 464 }
 465
 466 /* free the V4L grab buffers */
 467 static void
 468 v4l_fbuffer_free (struct file *file)
 469 {
 470         struct zoran_fh *fh = file->private_data;
 471         struct zoran *zr = fh->zr;
 472         int i, off;
 473         unsigned char *mem;
 474
 475         dprintk(4, KERN_INFO "%s: v4l_fbuffer_free()\n", ZR_DEVNAME(zr));
 476
 477         for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
 478                 if (!fh->v4l_buffers.buffer[i].fbuffer)
 479                         continue;
 480
 481                 if (fh->v4l_buffers.buffer_size <= MAX_KMALLOC_MEM) {
 482                         mem = fh->v4l_buffers.buffer[i].fbuffer;
 483                         for (off = 0; off < fh->v4l_buffers.buffer_size;
 484                              off += PAGE_SIZE)
 485                                 ClearPageReserved(MAP_NR(mem + off));
 486                         kfree((void *) fh->v4l_buffers.buffer[i].fbuffer);
 487                 }
 488 #if defined(CONFIG_BIGPHYS_AREA)
 489                 else
 490                         bigphysarea_free_pages((void *) fh->v4l_buffers.
 491                                                buffer[i].fbuffer);
 492 #endif
 493                 fh->v4l_buffers.buffer[i].fbuffer = NULL;
 494         }
 495
 496         fh->v4l_buffers.allocated = 0;
 497         fh->v4l_buffers.ready_to_be_freed = 0;
 498 }
 499
 500 /*
 501  *   Allocate the MJPEG grab buffers.
 502  *
 503  *   If the requested buffer size is smaller than MAX_KMALLOC_MEM,
 504  *   kmalloc is used to request a physically contiguous area,
 505  *   else we allocate the memory in framgents with get_zeroed_page.
 506  *
 507  *   If a Natoma chipset is present and this is a revision 1 zr36057,
 508  *   each MJPEG buffer needs to be physically contiguous.
 509  *   (RJ: This statement is from Dave Perks' original driver,
 510  *   I could never check it because I have a zr36067)
 511  *   The driver cares about this because it reduces the buffer
 512  *   size to MAX_KMALLOC_MEM in that case (which forces contiguous allocation).
 513  *
 514  *   RJ: The contents grab buffers needs never be accessed in the driver.
 515  *       Therefore there is no need to allocate them with vmalloc in order
 516  *       to get a contiguous virtual memory space.
 517  *       I don't understand why many other drivers first allocate them with
 518  *       vmalloc (which uses internally also get_zeroed_page, but delivers you
 519  *       virtual addresses) and then again have to make a lot of efforts
 520  *       to get the physical address.
 521  *
 522  *   Ben Capper:
 523  *       On big-endian architectures (such as ppc) some extra steps
 524  *       are needed. When reading and writing to the stat_com array
 525  *       and fragment buffers, the device expects to see little-
 526  *       endian values. The use of cpu_to_le32() and le32_to_cpu()
 527  *       in this function (and one or two others in zoran_device.c)
 528  *       ensure that these values are always stored in little-endian
 529  *       form, regardless of architecture. The zr36057 does Very Bad
 530  *       Things on big endian architectures if the stat_com array
 531  *       and fragment buffers are not little-endian.
 532  */
 533
 534 static int
 535 jpg_fbuffer_alloc (struct file *file)
 536 {
 537         struct zoran_fh *fh = file->private_data;
 538         struct zoran *zr = fh->zr;
 539         int i, j, off;
 540         unsigned long mem;
 541
 542         /* we might have old buffers lying around */
 543         if (fh->jpg_buffers.ready_to_be_freed) {
 544                 jpg_fbuffer_free(file);
 545         }
 546
 547         for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
 548                 if (fh->jpg_buffers.buffer[i].frag_tab)
 549                         dprintk(2,
 550                                 KERN_WARNING
 551                                 "%s: jpg_fbuffer_alloc() - buffer %d allready allocated!?\n",
 552                                 ZR_DEVNAME(zr), i);
 553
 554                 /* Allocate fragment table for this buffer */
 555
 556                 mem = get_zeroed_page(GFP_KERNEL);
 557                 if (mem == 0) {
 558                         dprintk(1,
 559                                 KERN_ERR
 560                                 "%s: jpg_fbuffer_alloc() - get_zeroed_page (frag_tab) failed for buffer %d\n",
 561                                 ZR_DEVNAME(zr), i);
 562                         jpg_fbuffer_free(file);
 563                         return -ENOBUFS;
 564                 }
 565                 fh->jpg_buffers.buffer[i].frag_tab = (u32 *) mem;
 566                 fh->jpg_buffers.buffer[i].frag_tab_bus =
 567                     virt_to_bus((void *) mem);
 568
 569                 //if (alloc_contig) {
 570                 if (fh->jpg_buffers.need_contiguous) {
 571                         mem =
 572                             (unsigned long) kmalloc(fh->jpg_buffers.
 573                                                     buffer_size,
 574                                                     GFP_KERNEL);
 575                         if (mem == 0) {
 576                                 dprintk(1,
 577                                         KERN_ERR
 578                                         "%s: jpg_fbuffer_alloc() - kmalloc failed for buffer %d\n",
 579                                         ZR_DEVNAME(zr), i);
 580                                 jpg_fbuffer_free(file);
 581                                 return -ENOBUFS;
 582                         }
 583                         fh->jpg_buffers.buffer[i].frag_tab[0] =
 584                             cpu_to_le32(virt_to_bus((void *) mem));
 585                         fh->jpg_buffers.buffer[i].frag_tab[1] =
 586                             cpu_to_le32(((fh->jpg_buffers.buffer_size / 4) << 1) | 1);
 587                         for (off = 0; off < fh->jpg_buffers.buffer_size;
 588                              off += PAGE_SIZE)
 589                                 SetPageReserved(MAP_NR(mem + off));
 590                 } else {
 591                         /* jpg_bufsize is allreay page aligned */
 592                         for (j = 0;
 593                              j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
 594                              j++) {
 595                                 mem = get_zeroed_page(GFP_KERNEL);
 596                                 if (mem == 0) {
 597                                         dprintk(1,
 598                                                 KERN_ERR
 599                                                 "%s: jpg_fbuffer_alloc() - get_zeroed_page failed for buffer %d\n",
 600                                                 ZR_DEVNAME(zr), i);
 601                                         jpg_fbuffer_free(file);
 602                                         return -ENOBUFS;
 603                                 }
 604
 605                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j] =
 606                                     cpu_to_le32(virt_to_bus((void *) mem));
 607                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j +
 608                                                                    1] =
 609                                     cpu_to_le32((PAGE_SIZE / 4) << 1);
 610                                 SetPageReserved(MAP_NR(mem));
 611                         }
 612
 613                         fh->jpg_buffers.buffer[i].frag_tab[2 * j - 1] |= cpu_to_le32(1);
 614                 }
 615         }
 616
 617         dprintk(4,
 618                 KERN_DEBUG "%s: jpg_fbuffer_alloc() - %d KB allocated\n",
 619                 ZR_DEVNAME(zr),
 620                 (fh->jpg_buffers.num_buffers *
 621                  fh->jpg_buffers.buffer_size) >> 10);
 622
 623         fh->jpg_buffers.allocated = 1;
 624
 625         return 0;
 626 }
 627
 628 /* free the MJPEG grab buffers */
 629 static void
 630 jpg_fbuffer_free (struct file *file)
 631 {
 632         struct zoran_fh *fh = file->private_data;
 633         struct zoran *zr = fh->zr;
 634         int i, j, off;
 635         unsigned char *mem;
 636
 637         dprintk(4, KERN_DEBUG "%s: jpg_fbuffer_free()\n", ZR_DEVNAME(zr));
 638
 639         for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
 640                 if (!fh->jpg_buffers.buffer[i].frag_tab)
 641                         continue;
 642
 643                 //if (alloc_contig) {
 644                 if (fh->jpg_buffers.need_contiguous) {
 645                         if (fh->jpg_buffers.buffer[i].frag_tab[0]) {
 646                                 mem = (unsigned char *) bus_to_virt(le32_to_cpu(
 647                                         fh->jpg_buffers.buffer[i].frag_tab[0]));
 648                                 for (off = 0;
 649                                      off < fh->jpg_buffers.buffer_size;
 650                                      off += PAGE_SIZE)
 651                                         ClearPageReserved(MAP_NR
 652                                                           (mem + off));
 653                                 kfree(mem);
 654                                 fh->jpg_buffers.buffer[i].frag_tab[0] = 0;
 655                                 fh->jpg_buffers.buffer[i].frag_tab[1] = 0;
 656                         }
 657                 } else {
 658                         for (j = 0;
 659                              j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
 660                              j++) {
 661                                 if (!fh->jpg_buffers.buffer[i].
 662                                     frag_tab[2 * j])
 663                                         break;
 664                                 ClearPageReserved(MAP_NR
 665                                                   (bus_to_virt
 666                                                    (le32_to_cpu
 667                                                     (fh->jpg_buffers.
 668                                                      buffer[i].frag_tab[2 *
 669                                                                        j]))));
 670                                 free_page((unsigned long)
 671                                           bus_to_virt
 672                                                   (le32_to_cpu
 673                                                    (fh->jpg_buffers.
 674                                                       buffer[i].
 675                                                       frag_tab[2 * j])));
 676                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j] =
 677                                     0;
 678                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j +
 679                                                                    1] = 0;
 680                         }
 681                 }
 682
 683                 free_page((unsigned long) fh->jpg_buffers.buffer[i].
 684                           frag_tab);
 685                 fh->jpg_buffers.buffer[i].frag_tab = NULL;
 686         }
 687
 688         fh->jpg_buffers.allocated = 0;
 689         fh->jpg_buffers.ready_to_be_freed = 0;
 690 }
 691
 692 /*
 693  *   V4L Buffer grabbing
 694  */
 695
 696 static int
 697 zoran_v4l_set_format (struct file               *file,
 698                       int                        width,
 699                       int                        height,
 700                       const struct zoran_format *format)
 701 {
 702         struct zoran_fh *fh = file->private_data;
 703         struct zoran *zr = fh->zr;
 704         int bpp;
 705
 706         /* Check size and format of the grab wanted */
 707
 708         if (height < BUZ_MIN_HEIGHT || width < BUZ_MIN_WIDTH ||
 709             height > BUZ_MAX_HEIGHT || width > BUZ_MAX_WIDTH) {
 710                 dprintk(1,
 711                         KERN_ERR
 712                         "%s: v4l_set_format() - wrong frame size (%dx%d)\n",
 713                         ZR_DEVNAME(zr), width, height);
 714                 return -EINVAL;
 715         }
 716
 717         bpp = (format->depth + 7) / 8;
 718
 719         /* Check against available buffer size */
 720         if (height * width * bpp > fh->v4l_buffers.buffer_size) {
 721                 dprintk(1,
 722                         KERN_ERR
 723                         "%s: v4l_set_format() - video buffer size (%d kB) is too small\n",
 724                         ZR_DEVNAME(zr), fh->v4l_buffers.buffer_size >> 10);
 725                 return -EINVAL;
 726         }
 727
 728         /* The video front end needs 4-byte alinged line sizes */
 729
 730         if ((bpp == 2 && (width & 1)) || (bpp == 3 && (width & 3))) {
 731                 dprintk(1,
 732                         KERN_ERR
 733                         "%s: v4l_set_format() - wrong frame alingment\n",
 734                         ZR_DEVNAME(zr));
 735                 return -EINVAL;
 736         }
 737
 738         fh->v4l_settings.width = width;
 739         fh->v4l_settings.height = height;
 740         fh->v4l_settings.format = format;
 741         fh->v4l_settings.bytesperline = bpp * fh->v4l_settings.width;
 742
 743         return 0;
 744 }
 745
 746 static int
 747 zoran_v4l_queue_frame (struct file *file,
 748                        int          num)
 749 {
 750         struct zoran_fh *fh = file->private_data;
 751         struct zoran *zr = fh->zr;
 752         unsigned long flags;
 753         int res = 0;
 754
 755         if (!fh->v4l_buffers.allocated) {
 756                 dprintk(1,
 757                         KERN_ERR
 758                         "%s: v4l_queue_frame() - buffers not yet allocated\n",
 759                         ZR_DEVNAME(zr));
 760                 res = -ENOMEM;
 761         }
 762
 763         /* No grabbing outside the buffer range! */
 764         if (num >= fh->v4l_buffers.num_buffers || num < 0) {
 765                 dprintk(1,
 766                         KERN_ERR
 767                         "%s: v4l_queue_frame() - buffer %d is out of range\n",
 768                         ZR_DEVNAME(zr), num);
 769                 res = -EINVAL;
 770         }
 771
 772         spin_lock_irqsave(&zr->spinlock, flags);
 773
 774         if (fh->v4l_buffers.active == ZORAN_FREE) {
 775                 if (zr->v4l_buffers.active == ZORAN_FREE) {
 776                         zr->v4l_buffers = fh->v4l_buffers;
 777                         fh->v4l_buffers.active = ZORAN_ACTIVE;
 778                 } else {
 779                         dprintk(1,
 780                                 KERN_ERR
 781                                 "%s: v4l_queue_frame() - another session is already capturing\n",
 782                                 ZR_DEVNAME(zr));
 783                         res = -EBUSY;
 784                 }
 785         }
 786
 787         /* make sure a grab isn't going on currently with this buffer */
 788         if (!res) {
 789                 switch (zr->v4l_buffers.buffer[num].state) {
 790                 default:
 791                 case BUZ_STATE_PEND:
 792                         if (zr->v4l_buffers.active == ZORAN_FREE) {
 793                                 fh->v4l_buffers.active = ZORAN_FREE;
 794                                 zr->v4l_buffers.allocated = 0;
 795                         }
 796                         res = -EBUSY;   /* what are you doing? */
 797                         break;
 798                 case BUZ_STATE_DONE:
 799                         dprintk(2,
 800                                 KERN_WARNING
 801                                 "%s: v4l_queue_frame() - queueing buffer %d in state DONE!?\n",
 802                                 ZR_DEVNAME(zr), num);
 803                 case BUZ_STATE_USER:
 804                         /* since there is at least one unused buffer there's room for at least
 805                          * one more pend[] entry */
 806                         zr->v4l_pend[zr->v4l_pend_head++ &
 807                                         V4L_MASK_FRAME] = num;
 808                         zr->v4l_buffers.buffer[num].state = BUZ_STATE_PEND;
 809                         zr->v4l_buffers.buffer[num].bs.length =
 810                             fh->v4l_settings.bytesperline *
 811                             zr->v4l_settings.height;
 812                         fh->v4l_buffers.buffer[num] =
 813                             zr->v4l_buffers.buffer[num];
 814                         break;
 815                 }
 816         }
 817
 818         spin_unlock_irqrestore(&zr->spinlock, flags);
 819
 820         if (!res && zr->v4l_buffers.active == ZORAN_FREE)
 821                 zr->v4l_buffers.active = fh->v4l_buffers.active;
 822
 823         return res;
 824 }
 825
 826 static int
 827 v4l_grab (struct file       *file,
 828           struct video_mmap *mp)
 829 {
 830         struct zoran_fh *fh = file->private_data;
 831         struct zoran *zr = fh->zr;
 832         int res = 0, i;
 833
 834         for (i = 0; i < zoran_num_formats; i++) {
 835                 if (zoran_formats[i].palette == mp->format &&
 836                     zoran_formats[i].flags & ZORAN_FORMAT_CAPTURE &&
 837                     !(zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED))
 838                         break;
 839         }
 840         if (i == zoran_num_formats || zoran_formats[i].depth == 0) {
 841                 dprintk(1,
 842                         KERN_ERR
 843                         "%s: v4l_grab() - wrong bytes-per-pixel format\n",
 844                         ZR_DEVNAME(zr));
 845                 return -EINVAL;
 846         }
 847
 848         /*
 849          * To minimize the time spent in the IRQ routine, we avoid setting up
 850          * the video front end there.
 851          * If this grab has different parameters from a running streaming capture
 852          * we stop the streaming capture and start it over again.
 853          */
 854         if (zr->v4l_memgrab_active &&
 855             (zr->v4l_settings.width != mp->width ||
 856              zr->v4l_settings.height != mp->height ||
 857              zr->v4l_settings.format->palette != mp->format)) {
 858                 res = wait_grab_pending(zr);
 859                 if (res)
 860                         return res;
 861         }
 862         if ((res = zoran_v4l_set_format(file,
 863                                         mp->width,
 864                                         mp->height,
 865                                         &zoran_formats[i])))
 866                 return res;
 867         zr->v4l_settings = fh->v4l_settings;
 868
 869         /* queue the frame in the pending queue */
 870         if ((res = zoran_v4l_queue_frame(file, mp->frame))) {
 871                 fh->v4l_buffers.active = ZORAN_FREE;
 872                 return res;
 873         }
 874
 875         /* put the 36057 into frame grabbing mode */
 876         if (!res && !zr->v4l_memgrab_active)
 877                 zr36057_set_memgrab(zr, 1);
 878
 879         //dprintk(4, KERN_INFO "%s: Frame grab 3...\n", ZR_DEVNAME(zr));
 880
 881         return res;
 882 }
 883
 884 /*
 885  * Sync on a V4L buffer
 886  */
 887
 888 static int
 889 v4l_sync (struct file *file,
 890           int          frame)
 891 {
 892         struct zoran_fh *fh = file->private_data;
 893         struct zoran *zr = fh->zr;
 894         unsigned long flags;
 895
 896         if (fh->v4l_buffers.active == ZORAN_FREE) {
 897                 dprintk(1,
 898                         KERN_ERR
 899                         "%s: v4l_sync() - no grab active for this session\n",
 900                         ZR_DEVNAME(zr));
 901                 return -EINVAL;
 902         }
 903
 904         /* check passed-in frame number */
 905         if (frame >= fh->v4l_buffers.num_buffers || frame < 0) {
 906                 dprintk(1,
 907                         KERN_ERR "%s: v4l_sync() - frame %d is invalid\n",
 908                         ZR_DEVNAME(zr), frame);
 909                 return -EINVAL;
 910         }
 911
 912         /* Check if is buffer was queued at all */
 913         if (zr->v4l_buffers.buffer[frame].state == BUZ_STATE_USER) {
 914                 dprintk(1,
 915                         KERN_ERR
 916                         "%s: v4l_sync() - attempt to sync on a buffer which was not queued?\n",
 917                         ZR_DEVNAME(zr));
 918                 return -EPROTO;
 919         }
 920
 921         /* wait on this buffer to get ready */
 922         if (!wait_event_interruptible_timeout(zr->v4l_capq,
 923                                 (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_PEND),
 924                                 10*HZ))
 925                 return -ETIME;
 926         if (signal_pending(current))
 927                 return -ERESTARTSYS;
 928
 929         /* buffer should now be in BUZ_STATE_DONE */
 930         if (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_DONE)
 931                 dprintk(2,
 932                         KERN_ERR "%s: v4l_sync() - internal state error\n",
 933                         ZR_DEVNAME(zr));
 934
 935         zr->v4l_buffers.buffer[frame].state = BUZ_STATE_USER;
 936         fh->v4l_buffers.buffer[frame] = zr->v4l_buffers.buffer[frame];
 937
 938         spin_lock_irqsave(&zr->spinlock, flags);
 939
 940         /* Check if streaming capture has finished */
 941         if (zr->v4l_pend_tail == zr->v4l_pend_head) {
 942                 zr36057_set_memgrab(zr, 0);
 943                 if (zr->v4l_buffers.active == ZORAN_ACTIVE) {
 944                         fh->v4l_buffers.active = zr->v4l_buffers.active =
 945                             ZORAN_FREE;
 946                         zr->v4l_buffers.allocated = 0;
 947                 }
 948         }
 949
 950         spin_unlock_irqrestore(&zr->spinlock, flags);
 951
 952         return 0;
 953 }
 954
 955 /*
 956  *   Queue a MJPEG buffer for capture/playback
 957  */
 958
 959 static int
 960 zoran_jpg_queue_frame (struct file          *file,
 961                        int                   num,
 962                        enum zoran_codec_mode mode)
 963 {
 964         struct zoran_fh *fh = file->private_data;
 965         struct zoran *zr = fh->zr;
 966         unsigned long flags;
 967         int res = 0;
 968
 969         /* Check if buffers are allocated */
 970         if (!fh->jpg_buffers.allocated) {
 971                 dprintk(1,
 972                         KERN_ERR
 973                         "%s: jpg_queue_frame() - buffers not yet allocated\n",
 974                         ZR_DEVNAME(zr));
 975                 return -ENOMEM;
 976         }
 977
 978         /* No grabbing outside the buffer range! */
 979         if (num >= fh->jpg_buffers.num_buffers || num < 0) {
 980                 dprintk(1,
 981                         KERN_ERR
 982                         "%s: jpg_queue_frame() - buffer %d out of range\n",
 983                         ZR_DEVNAME(zr), num);
 984                 return -EINVAL;
 985         }
 986
 987         /* what is the codec mode right now? */
 988         if (zr->codec_mode == BUZ_MODE_IDLE) {
 989                 zr->jpg_settings = fh->jpg_settings;
 990         } else if (zr->codec_mode != mode) {
 991                 /* wrong codec mode active - invalid */
 992                 dprintk(1,
 993                         KERN_ERR
 994                         "%s: jpg_queue_frame() - codec in wrong mode\n",
 995                         ZR_DEVNAME(zr));
 996                 return -EINVAL;
 997         }
 998
 999         if (fh->jpg_buffers.active == ZORAN_FREE) {
1000                 if (zr->jpg_buffers.active == ZORAN_FREE) {
1001                         zr->jpg_buffers = fh->jpg_buffers;
1002                         fh->jpg_buffers.active = ZORAN_ACTIVE;
1003                 } else {
1004                         dprintk(1,
1005                                 KERN_ERR
1006                                 "%s: jpg_queue_frame() - another session is already capturing\n",
1007                                 ZR_DEVNAME(zr));
1008                         res = -EBUSY;
1009                 }
1010         }
1011
1012         if (!res && zr->codec_mode == BUZ_MODE_IDLE) {
1013                 /* Ok load up the jpeg codec */
1014                 zr36057_enable_jpg(zr, mode);
1015         }
1016
1017         spin_lock_irqsave(&zr->spinlock, flags);
1018
1019         if (!res) {
1020                 switch (zr->jpg_buffers.buffer[num].state) {
1021                 case BUZ_STATE_DONE:
1022                         dprintk(2,
1023                                 KERN_WARNING
1024                                 "%s: jpg_queue_frame() - queing frame in BUZ_STATE_DONE state!?\n",
1025                                 ZR_DEVNAME(zr));
1026                 case BUZ_STATE_USER:
1027                         /* since there is at least one unused buffer there's room for at
1028                          *least one more pend[] entry */
1029                         zr->jpg_pend[zr->jpg_que_head++ & BUZ_MASK_FRAME] =
1030                             num;
1031                         zr->jpg_buffers.buffer[num].state = BUZ_STATE_PEND;
1032                         fh->jpg_buffers.buffer[num] =
1033                             zr->jpg_buffers.buffer[num];
1034                         zoran_feed_stat_com(zr);
1035                         break;
1036                 default:
1037                 case BUZ_STATE_DMA:
1038                 case BUZ_STATE_PEND:
1039                         if (zr->jpg_buffers.active == ZORAN_FREE) {
1040                                 fh->jpg_buffers.active = ZORAN_FREE;
1041                                 zr->jpg_buffers.allocated = 0;
1042                         }
1043                         res = -EBUSY;   /* what are you doing? */
1044                         break;
1045                 }
1046         }
1047
1048         spin_unlock_irqrestore(&zr->spinlock, flags);
1049
1050         if (!res && zr->jpg_buffers.active == ZORAN_FREE) {
1051                 zr->jpg_buffers.active = fh->jpg_buffers.active;
1052         }
1053
1054         return res;
1055 }
1056
1057 static int
1058 jpg_qbuf (struct file          *file,
1059           int                   frame,
1060           enum zoran_codec_mode mode)
1061 {
1062         struct zoran_fh *fh = file->private_data;
1063         struct zoran *zr = fh->zr;
1064         int res = 0;
1065
1066         /* Does the user want to stop streaming? */
1067         if (frame < 0) {
1068                 if (zr->codec_mode == mode) {
1069                         if (fh->jpg_buffers.active == ZORAN_FREE) {
1070                                 dprintk(1,
1071                                         KERN_ERR
1072                                         "%s: jpg_qbuf(-1) - session not active\n",
1073                                         ZR_DEVNAME(zr));
1074                                 return -EINVAL;
1075                         }
1076                         fh->jpg_buffers.active = zr->jpg_buffers.active =
1077                             ZORAN_FREE;
1078                         zr->jpg_buffers.allocated = 0;
1079                         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1080                         return 0;
1081                 } else {
1082                         dprintk(1,
1083                                 KERN_ERR
1084                                 "%s: jpg_qbuf() - stop streaming but not in streaming mode\n",
1085                                 ZR_DEVNAME(zr));
1086                         return -EINVAL;
1087                 }
1088         }
1089
1090         if ((res = zoran_jpg_queue_frame(file, frame, mode)))
1091                 return res;
1092
1093         /* Start the jpeg codec when the first frame is queued  */
1094         if (!res && zr->jpg_que_head == 1)
1095                 jpeg_start(zr);
1096
1097         return res;
1098 }
1099
1100 /*
1101  *   Sync on a MJPEG buffer
1102  */
1103
1104 static int
1105 jpg_sync (struct file       *file,
1106           struct zoran_sync *bs)
1107 {
1108         struct zoran_fh *fh = file->private_data;
1109         struct zoran *zr = fh->zr;
1110         unsigned long flags;
1111         int frame;
1112
1113         if (fh->jpg_buffers.active == ZORAN_FREE) {
1114                 dprintk(1,
1115                         KERN_ERR
1116                         "%s: jpg_sync() - capture is not currently active\n",
1117                         ZR_DEVNAME(zr));
1118                 return -EINVAL;
1119         }
1120         if (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS &&
1121             zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) {
1122                 dprintk(1,
1123                         KERN_ERR
1124                         "%s: jpg_sync() - codec not in streaming mode\n",
1125                         ZR_DEVNAME(zr));
1126                 return -EINVAL;
1127         }
1128         if (!wait_event_interruptible_timeout(zr->jpg_capq,
1129                         (zr->jpg_que_tail != zr->jpg_dma_tail ||
1130                          zr->jpg_dma_tail == zr->jpg_dma_head),
1131                         10*HZ)) {
1132                 int isr;
1133
1134                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1135                 udelay(1);
1136                 zr->codec->control(zr->codec, CODEC_G_STATUS,
1137                                            sizeof(isr), &isr);
1138                 dprintk(1,
1139                         KERN_ERR
1140                         "%s: jpg_sync() - timeout: codec isr=0x%02x\n",
1141                         ZR_DEVNAME(zr), isr);
1142
1143                 return -ETIME;
1144
1145         }
1146         if (signal_pending(current))
1147                 return -ERESTARTSYS;
1148
1149         spin_lock_irqsave(&zr->spinlock, flags);
1150
1151         if (zr->jpg_dma_tail != zr->jpg_dma_head)
1152                 frame = zr->jpg_pend[zr->jpg_que_tail++ & BUZ_MASK_FRAME];
1153         else
1154                 frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];
1155
1156         /* buffer should now be in BUZ_STATE_DONE */
1157         if (*zr_debug > 0)
1158                 if (zr->jpg_buffers.buffer[frame].state != BUZ_STATE_DONE)
1159                         dprintk(2,
1160                                 KERN_ERR
1161                                 "%s: jpg_sync() - internal state error\n",
1162                                 ZR_DEVNAME(zr));
1163
1164         *bs = zr->jpg_buffers.buffer[frame].bs;
1165         bs->frame = frame;
1166         zr->jpg_buffers.buffer[frame].state = BUZ_STATE_USER;
1167         fh->jpg_buffers.buffer[frame] = zr->jpg_buffers.buffer[frame];
1168
1169         spin_unlock_irqrestore(&zr->spinlock, flags);
1170
1171         return 0;
1172 }
1173
1174 static void
1175 zoran_open_init_session (struct file *file)
1176 {
1177         int i;
1178         struct zoran_fh *fh = file->private_data;
1179         struct zoran *zr = fh->zr;
1180
1181         /* Per default, map the V4L Buffers */
1182         fh->map_mode = ZORAN_MAP_MODE_RAW;
1183
1184         /* take over the card's current settings */
1185         fh->overlay_settings = zr->overlay_settings;
1186         fh->overlay_settings.is_set = 0;
1187         fh->overlay_settings.format = zr->overlay_settings.format;
1188         fh->overlay_active = ZORAN_FREE;
1189
1190         /* v4l settings */
1191         fh->v4l_settings = zr->v4l_settings;
1192
1193         /* v4l_buffers */
1194         memset(&fh->v4l_buffers, 0, sizeof(struct zoran_v4l_struct));
1195         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
1196                 fh->v4l_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
1197                 fh->v4l_buffers.buffer[i].bs.frame = i;
1198         }
1199         fh->v4l_buffers.allocated = 0;
1200         fh->v4l_buffers.ready_to_be_freed = 0;
1201         fh->v4l_buffers.active = ZORAN_FREE;
1202         fh->v4l_buffers.buffer_size = v4l_bufsize;
1203         fh->v4l_buffers.num_buffers = v4l_nbufs;
1204
1205         /* jpg settings */
1206         fh->jpg_settings = zr->jpg_settings;
1207
1208         /* jpg_buffers */
1209         memset(&fh->jpg_buffers, 0, sizeof(struct zoran_jpg_struct));
1210         for (i = 0; i < BUZ_MAX_FRAME; i++) {
1211                 fh->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
1212                 fh->jpg_buffers.buffer[i].bs.frame = i;
1213         }
1214         fh->jpg_buffers.need_contiguous = zr->jpg_buffers.need_contiguous;
1215         fh->jpg_buffers.allocated = 0;
1216         fh->jpg_buffers.ready_to_be_freed = 0;
1217         fh->jpg_buffers.active = ZORAN_FREE;
1218         fh->jpg_buffers.buffer_size = jpg_bufsize;
1219         fh->jpg_buffers.num_buffers = jpg_nbufs;
1220 }
1221
1222 static void
1223 zoran_close_end_session (struct file *file)
1224 {
1225         struct zoran_fh *fh = file->private_data;
1226         struct zoran *zr = fh->zr;
1227
1228         /* overlay */
1229         if (fh->overlay_active != ZORAN_FREE) {
1230                 fh->overlay_active = zr->overlay_active = ZORAN_FREE;
1231                 zr->v4l_overlay_active = 0;
1232                 if (!zr->v4l_memgrab_active)
1233                         zr36057_overlay(zr, 0);
1234                 zr->overlay_mask = NULL;
1235         }
1236
1237         /* v4l capture */
1238         if (fh->v4l_buffers.active != ZORAN_FREE) {
1239                 zr36057_set_memgrab(zr, 0);
1240                 zr->v4l_buffers.allocated = 0;
1241                 zr->v4l_buffers.active = fh->v4l_buffers.active =
1242                     ZORAN_FREE;
1243         }
1244
1245         /* v4l buffers */
1246         if (fh->v4l_buffers.allocated ||
1247             fh->v4l_buffers.ready_to_be_freed) {
1248                 v4l_fbuffer_free(file);
1249         }
1250
1251         /* jpg capture */
1252         if (fh->jpg_buffers.active != ZORAN_FREE) {
1253                 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1254                 zr->jpg_buffers.allocated = 0;
1255                 zr->jpg_buffers.active = fh->jpg_buffers.active =
1256                     ZORAN_FREE;
1257         }
1258
1259         /* jpg buffers */
1260         if (fh->jpg_buffers.allocated ||
1261             fh->jpg_buffers.ready_to_be_freed) {
1262                 jpg_fbuffer_free(file);
1263         }
1264 }
1265
1266 /*
1267  *   Open a zoran card. Right now the flags stuff is just playing
1268  */
1269
1270 static int
1271 zoran_open (struct inode *inode,
1272             struct file  *file)
1273 {
1274         unsigned int minor = iminor(inode);
1275         struct zoran *zr = NULL;
1276         struct zoran_fh *fh;
1277         int i, res, first_open = 0, have_module_locks = 0;
1278
1279         /* find the device */
1280         for (i = 0; i < zoran_num; i++) {
1281                 if (zoran[i].video_dev->minor == minor) {
1282                         zr = &zoran[i];
1283                         break;
1284                 }
1285         }
1286
1287         if (!zr) {
1288                 dprintk(1, KERN_ERR "%s: device not found!\n", ZORAN_NAME);
1289                 res = -ENODEV;
1290                 goto open_unlock_and_return;
1291         }
1292
1293         /* see fs/device.c - the kernel already locks during open(),
1294          * so locking ourselves only causes deadlocks */
1295         /*mutex_lock(&zr->resource_lock);*/
1296
1297         if (!zr->decoder) {
1298                 dprintk(1,
1299                         KERN_ERR "%s: no TV decoder loaded for device!\n",
1300                         ZR_DEVNAME(zr));
1301                 res = -EIO;
1302                 goto open_unlock_and_return;
1303         }
1304
1305         /* try to grab a module lock */
1306         if (!try_module_get(THIS_MODULE)) {
1307                 dprintk(1,
1308                         KERN_ERR
1309                         "%s: failed to acquire my own lock! PANIC!\n",
1310                         ZR_DEVNAME(zr));
1311                 res = -ENODEV;
1312                 goto open_unlock_and_return;
1313         }
1314         if (!try_module_get(zr->decoder->driver->driver.owner)) {
1315                 dprintk(1,
1316                         KERN_ERR
1317                         "%s: failed to grab ownership of i2c decoder\n",
1318                         ZR_DEVNAME(zr));
1319                 res = -EIO;
1320                 module_put(THIS_MODULE);
1321                 goto open_unlock_and_return;
1322         }
1323         if (zr->encoder &&
1324             !try_module_get(zr->encoder->driver->driver.owner)) {
1325                 dprintk(1,
1326                         KERN_ERR
1327                         "%s: failed to grab ownership of i2c encoder\n",
1328                         ZR_DEVNAME(zr));
1329                 res = -EIO;
1330                 module_put(zr->decoder->driver->driver.owner);
1331                 module_put(THIS_MODULE);
1332                 goto open_unlock_and_return;
1333         }
1334
1335         have_module_locks = 1;
1336
1337         if (zr->user >= 2048) {
1338                 dprintk(1, KERN_ERR "%s: too many users (%d) on device\n",
1339                         ZR_DEVNAME(zr), zr->user);
1340                 res = -EBUSY;
1341                 goto open_unlock_and_return;
1342         }
1343
1344         dprintk(1, KERN_INFO "%s: zoran_open(%s, pid=[%d]), users(-)=%d\n",
1345                 ZR_DEVNAME(zr), current->comm, current->pid, zr->user);
1346
1347         /* now, create the open()-specific file_ops struct */
1348         fh = kzalloc(sizeof(struct zoran_fh), GFP_KERNEL);
1349         if (!fh) {
1350                 dprintk(1,
1351                         KERN_ERR
1352                         "%s: zoran_open() - allocation of zoran_fh failed\n",
1353                         ZR_DEVNAME(zr));
1354                 res = -ENOMEM;
1355                 goto open_unlock_and_return;
1356         }
1357         /* used to be BUZ_MAX_WIDTH/HEIGHT, but that gives overflows
1358          * on norm-change! */
1359         fh->overlay_mask =
1360             kmalloc(((768 + 31) / 32) * 576 * 4, GFP_KERNEL);
1361         if (!fh->overlay_mask) {
1362                 dprintk(1,
1363                         KERN_ERR
1364                         "%s: zoran_open() - allocation of overlay_mask failed\n",
1365                         ZR_DEVNAME(zr));
1366                 kfree(fh);
1367                 res = -ENOMEM;
1368                 goto open_unlock_and_return;
1369         }
1370
1371         if (zr->user++ == 0)
1372                 first_open = 1;
1373
1374         /*mutex_unlock(&zr->resource_lock);*/
1375
1376         /* default setup - TODO: look at flags */
1377         if (first_open) {       /* First device open */
1378                 zr36057_restart(zr);
1379                 zoran_open_init_params(zr);
1380                 zoran_init_hardware(zr);
1381
1382                 btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
1383         }
1384
1385         /* set file_ops stuff */
1386         file->private_data = fh;
1387         fh->zr = zr;
1388         zoran_open_init_session(file);
1389
1390         return 0;
1391
1392 open_unlock_and_return:
1393         /* if we grabbed locks, release them accordingly */
1394         if (have_module_locks) {
1395                 module_put(zr->decoder->driver->driver.owner);
1396                 if (zr->encoder) {
1397                         module_put(zr->encoder->driver->driver.owner);
1398                 }
1399                 module_put(THIS_MODULE);
1400         }
1401
1402         /* if there's no device found, we didn't obtain the lock either */
1403         if (zr) {
1404                 /*mutex_unlock(&zr->resource_lock);*/
1405         }
1406
1407         return res;
1408 }
1409
1410 static int
1411 zoran_close (struct inode *inode,
1412              struct file  *file)
1413 {
1414         struct zoran_fh *fh = file->private_data;
1415         struct zoran *zr = fh->zr;
1416
1417         dprintk(1, KERN_INFO "%s: zoran_close(%s, pid=[%d]), users(+)=%d\n",
1418                 ZR_DEVNAME(zr), current->comm, current->pid, zr->user);
1419
1420         /* kernel locks (fs/device.c), so don't do that ourselves
1421          * (prevents deadlocks) */
1422         /*mutex_lock(&zr->resource_lock);*/
1423
1424         zoran_close_end_session(file);
1425
1426         if (zr->user-- == 1) {  /* Last process */
1427                 /* Clean up JPEG process */
1428                 wake_up_interruptible(&zr->jpg_capq);
1429                 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1430                 zr->jpg_buffers.allocated = 0;
1431                 zr->jpg_buffers.active = ZORAN_FREE;
1432
1433                 /* disable interrupts */
1434                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1435
1436                 if (*zr_debug > 1)
1437                         print_interrupts(zr);
1438
1439                 /* Overlay off */
1440                 zr->v4l_overlay_active = 0;
1441                 zr36057_overlay(zr, 0);
1442                 zr->overlay_mask = NULL;
1443
1444                 /* capture off */
1445                 wake_up_interruptible(&zr->v4l_capq);
1446                 zr36057_set_memgrab(zr, 0);
1447                 zr->v4l_buffers.allocated = 0;
1448                 zr->v4l_buffers.active = ZORAN_FREE;
1449                 zoran_set_pci_master(zr, 0);
1450
1451                 if (!pass_through) {    /* Switch to color bar */
1452                         int zero = 0, two = 2;
1453                         decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1454                         encoder_command(zr, ENCODER_SET_INPUT, &two);
1455                 }
1456         }
1457
1458         file->private_data = NULL;
1459         kfree(fh->overlay_mask);
1460         kfree(fh);
1461
1462         /* release locks on the i2c modules */
1463         module_put(zr->decoder->driver->driver.owner);
1464         if (zr->encoder) {
1465                  module_put(zr->encoder->driver->driver.owner);
1466         }
1467         module_put(THIS_MODULE);
1468
1469         /*mutex_unlock(&zr->resource_lock);*/
1470
1471         dprintk(4, KERN_INFO "%s: zoran_close() done\n", ZR_DEVNAME(zr));
1472
1473         return 0;
1474 }
1475
1476
1477 static ssize_t
1478 zoran_read (struct file *file,
1479             char        __user *data,
1480             size_t       count,
1481             loff_t      *ppos)
1482 {
1483         /* we simply don't support read() (yet)... */
1484
1485         return -EINVAL;
1486 }
1487
1488 static ssize_t
1489 zoran_write (struct file *file,
1490              const char  __user *data,
1491              size_t       count,
1492              loff_t      *ppos)
1493 {
1494         /* ...and the same goes for write() */
1495
1496         return -EINVAL;
1497 }
1498
1499 static int
1500 setup_fbuffer (struct file               *file,
1501                void                      *base,
1502                const struct zoran_format *fmt,
1503                int                        width,
1504                int                        height,
1505                int                        bytesperline)
1506 {
1507         struct zoran_fh *fh = file->private_data;
1508         struct zoran *zr = fh->zr;
1509
1510         /* (Ronald) v4l/v4l2 guidelines */
1511         if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1512                 return -EPERM;
1513
1514         /* Don't allow frame buffer overlay if PCI or AGP is buggy, or on
1515            ALi Magik (that needs very low latency while the card needs a
1516            higher value always) */
1517
1518         if (pci_pci_problems & (PCIPCI_FAIL | PCIAGP_FAIL | PCIPCI_ALIMAGIK))
1519                 return -ENXIO;
1520
1521         /* we need a bytesperline value, even if not given */
1522         if (!bytesperline)
1523                 bytesperline = width * ((fmt->depth + 7) & ~7) / 8;
1524
1525 #if 0
1526         if (zr->overlay_active) {
1527                 /* dzjee... stupid users... don't even bother to turn off
1528                  * overlay before changing the memory location...
1529                  * normally, we would return errors here. However, one of
1530                  * the tools that does this is... xawtv! and since xawtv
1531                  * is used by +/- 99% of the users, we'd rather be user-
1532                  * friendly and silently do as if nothing went wrong */
1533                 dprintk(3,
1534                         KERN_ERR
1535                         "%s: setup_fbuffer() - forced overlay turnoff because framebuffer changed\n",
1536                         ZR_DEVNAME(zr));
1537                 zr36057_overlay(zr, 0);
1538         }
1539 #endif
1540
1541         if (!(fmt->flags & ZORAN_FORMAT_OVERLAY)) {
1542                 dprintk(1,
1543                         KERN_ERR
1544                         "%s: setup_fbuffer() - no valid overlay format given\n",
1545                         ZR_DEVNAME(zr));
1546                 return -EINVAL;
1547         }
1548         if (height <= 0 || width <= 0 || bytesperline <= 0) {
1549                 dprintk(1,
1550                         KERN_ERR
1551                         "%s: setup_fbuffer() - invalid height/width/bpl value (%d|%d|%d)\n",
1552                         ZR_DEVNAME(zr), width, height, bytesperline);
1553                 return -EINVAL;
1554         }
1555         if (bytesperline & 3) {
1556                 dprintk(1,
1557                         KERN_ERR
1558                         "%s: setup_fbuffer() - bytesperline (%d) must be 4-byte aligned\n",
1559                         ZR_DEVNAME(zr), bytesperline);
1560                 return -EINVAL;
1561         }
1562
1563         zr->buffer.base = (void *) ((unsigned long) base & ~3);
1564         zr->buffer.height = height;
1565         zr->buffer.width = width;
1566         zr->buffer.depth = fmt->depth;
1567         zr->overlay_settings.format = fmt;
1568         zr->buffer.bytesperline = bytesperline;
1569
1570         /* The user should set new window parameters */
1571         zr->overlay_settings.is_set = 0;
1572
1573         return 0;
1574 }
1575
1576
1577 static int
1578 setup_window (struct file       *file,
1579               int                x,
1580               int                y,
1581               int                width,
1582               int                height,
1583               struct video_clip __user *clips,
1584               int                clipcount,
1585               void              __user *bitmap)
1586 {
1587         struct zoran_fh *fh = file->private_data;
1588         struct zoran *zr = fh->zr;
1589         struct video_clip *vcp = NULL;
1590         int on, end;
1591
1592
1593         if (!zr->buffer.base) {
1594                 dprintk(1,
1595                         KERN_ERR
1596                         "%s: setup_window() - frame buffer has to be set first\n",
1597                         ZR_DEVNAME(zr));
1598                 return -EINVAL;
1599         }
1600
1601         if (!fh->overlay_settings.format) {
1602                 dprintk(1,
1603                         KERN_ERR
1604                         "%s: setup_window() - no overlay format set\n",
1605                         ZR_DEVNAME(zr));
1606                 return -EINVAL;
1607         }
1608
1609         /*
1610          * The video front end needs 4-byte alinged line sizes, we correct that
1611          * silently here if necessary
1612          */
1613         if (zr->buffer.depth == 15 || zr->buffer.depth == 16) {
1614                 end = (x + width) & ~1; /* round down */
1615                 x = (x + 1) & ~1;       /* round up */
1616                 width = end - x;
1617         }
1618
1619         if (zr->buffer.depth == 24) {
1620                 end = (x + width) & ~3; /* round down */
1621                 x = (x + 3) & ~3;       /* round up */
1622                 width = end - x;
1623         }
1624
1625         if (width > BUZ_MAX_WIDTH)
1626                 width = BUZ_MAX_WIDTH;
1627         if (height > BUZ_MAX_HEIGHT)
1628                 height = BUZ_MAX_HEIGHT;
1629
1630         /* Check for vaild parameters */
1631         if (width < BUZ_MIN_WIDTH || height < BUZ_MIN_HEIGHT ||
1632             width > BUZ_MAX_WIDTH || height > BUZ_MAX_HEIGHT) {
1633                 dprintk(1,
1634                         KERN_ERR
1635                         "%s: setup_window() - width = %d or height = %d invalid\n",
1636                         ZR_DEVNAME(zr), width, height);
1637                 return -EINVAL;
1638         }
1639
1640         fh->overlay_settings.x = x;
1641         fh->overlay_settings.y = y;
1642         fh->overlay_settings.width = width;
1643         fh->overlay_settings.height = height;
1644         fh->overlay_settings.clipcount = clipcount;
1645
1646         /*
1647          * If an overlay is running, we have to switch it off
1648          * and switch it on again in order to get the new settings in effect.
1649          *
1650          * We also want to avoid that the overlay mask is written
1651          * when an overlay is running.
1652          */
1653
1654         on = zr->v4l_overlay_active && !zr->v4l_memgrab_active &&
1655             zr->overlay_active != ZORAN_FREE &&
1656             fh->overlay_active != ZORAN_FREE;
1657         if (on)
1658                 zr36057_overlay(zr, 0);
1659
1660         /*
1661          *   Write the overlay mask if clips are wanted.
1662          *   We prefer a bitmap.
1663          */
1664         if (bitmap) {
1665                 /* fake value - it just means we want clips */
1666                 fh->overlay_settings.clipcount = 1;
1667
1668                 if (copy_from_user(fh->overlay_mask, bitmap,
1669                                    (width * height + 7) / 8)) {
1670                         return -EFAULT;
1671                 }
1672         } else if (clipcount > 0) {
1673                 /* write our own bitmap from the clips */
1674                 vcp = vmalloc(sizeof(struct video_clip) * (clipcount + 4));
1675                 if (vcp == NULL) {
1676                         dprintk(1,
1677                                 KERN_ERR
1678                                 "%s: setup_window() - Alloc of clip mask failed\n",
1679                                 ZR_DEVNAME(zr));
1680                         return -ENOMEM;
1681                 }
1682                 if (copy_from_user
1683                     (vcp, clips, sizeof(struct video_clip) * clipcount)) {
1684                         vfree(vcp);
1685                         return -EFAULT;
1686                 }
1687                 write_overlay_mask(file, vcp, clipcount);
1688                 vfree(vcp);
1689         }
1690
1691         fh->overlay_settings.is_set = 1;
1692         if (fh->overlay_active != ZORAN_FREE &&
1693             zr->overlay_active != ZORAN_FREE)
1694                 zr->overlay_settings = fh->overlay_settings;
1695
1696         if (on)
1697                 zr36057_overlay(zr, 1);
1698
1699         /* Make sure the changes come into effect */
1700         return wait_grab_pending(zr);
1701 }
1702
1703 static int
1704 setup_overlay (struct file *file,
1705                int          on)
1706 {
1707         struct zoran_fh *fh = file->private_data;
1708         struct zoran *zr = fh->zr;
1709
1710         /* If there is nothing to do, return immediatly */
1711         if ((on && fh->overlay_active != ZORAN_FREE) ||
1712             (!on && fh->overlay_active == ZORAN_FREE))
1713                 return 0;
1714
1715         /* check whether we're touching someone else's overlay */
1716         if (on && zr->overlay_active != ZORAN_FREE &&
1717             fh->overlay_active == ZORAN_FREE) {
1718                 dprintk(1,
1719                         KERN_ERR
1720                         "%s: setup_overlay() - overlay is already active for another session\n",
1721                         ZR_DEVNAME(zr));
1722                 return -EBUSY;
1723         }
1724         if (!on && zr->overlay_active != ZORAN_FREE &&
1725             fh->overlay_active == ZORAN_FREE) {
1726                 dprintk(1,
1727                         KERN_ERR
1728                         "%s: setup_overlay() - you cannot cancel someone else's session\n",
1729                         ZR_DEVNAME(zr));
1730                 return -EPERM;
1731         }
1732
1733         if (on == 0) {
1734                 zr->overlay_active = fh->overlay_active = ZORAN_FREE;
1735                 zr->v4l_overlay_active = 0;
1736                 /* When a grab is running, the video simply
1737                  * won't be switched on any more */
1738                 if (!zr->v4l_memgrab_active)
1739                         zr36057_overlay(zr, 0);
1740                 zr->overlay_mask = NULL;
1741         } else {
1742                 if (!zr->buffer.base || !fh->overlay_settings.is_set) {
1743                         dprintk(1,
1744                                 KERN_ERR
1745                                 "%s: setup_overlay() - buffer or window not set\n",
1746                                 ZR_DEVNAME(zr));
1747                         return -EINVAL;
1748                 }
1749                 if (!fh->overlay_settings.format) {
1750                         dprintk(1,
1751                                 KERN_ERR
1752                                 "%s: setup_overlay() - no overlay format set\n",
1753                                 ZR_DEVNAME(zr));
1754                         return -EINVAL;
1755                 }
1756                 zr->overlay_active = fh->overlay_active = ZORAN_LOCKED;
1757                 zr->v4l_overlay_active = 1;
1758                 zr->overlay_mask = fh->overlay_mask;
1759                 zr->overlay_settings = fh->overlay_settings;
1760                 if (!zr->v4l_memgrab_active)
1761                         zr36057_overlay(zr, 1);
1762                 /* When a grab is running, the video will be
1763                  * switched on when grab is finished */
1764         }
1765
1766         /* Make sure the changes come into effect */
1767         return wait_grab_pending(zr);
1768 }
1769
1770 #ifdef CONFIG_VIDEO_V4L2
1771         /* get the status of a buffer in the clients buffer queue */
1772 static int
1773 zoran_v4l2_buffer_status (struct file        *file,
1774                           struct v4l2_buffer *buf,
1775                           int                 num)
1776 {
1777         struct zoran_fh *fh = file->private_data;
1778         struct zoran *zr = fh->zr;
1779
1780         buf->flags = V4L2_BUF_FLAG_MAPPED;
1781
1782         switch (fh->map_mode) {
1783         case ZORAN_MAP_MODE_RAW:
1784
1785                 /* check range */
1786                 if (num < 0 || num >= fh->v4l_buffers.num_buffers ||
1787                     !fh->v4l_buffers.allocated) {
1788                         dprintk(1,
1789                                 KERN_ERR
1790                                 "%s: v4l2_buffer_status() - wrong number or buffers not allocated\n",
1791                                 ZR_DEVNAME(zr));
1792                         return -EINVAL;
1793                 }
1794
1795                 buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1796                 buf->length = fh->v4l_buffers.buffer_size;
1797
1798                 /* get buffer */
1799                 buf->bytesused = fh->v4l_buffers.buffer[num].bs.length;
1800                 if (fh->v4l_buffers.buffer[num].state == BUZ_STATE_DONE ||
1801                     fh->v4l_buffers.buffer[num].state == BUZ_STATE_USER) {
1802                         buf->sequence = fh->v4l_buffers.buffer[num].bs.seq;
1803                         buf->flags |= V4L2_BUF_FLAG_DONE;
1804                         buf->timestamp =
1805                             fh->v4l_buffers.buffer[num].bs.timestamp;
1806                 } else {
1807                         buf->flags |= V4L2_BUF_FLAG_QUEUED;
1808                 }
1809
1810                 if (fh->v4l_settings.height <= BUZ_MAX_HEIGHT / 2)
1811                         buf->field = V4L2_FIELD_TOP;
1812                 else
1813                         buf->field = V4L2_FIELD_INTERLACED;
1814
1815                 break;
1816
1817         case ZORAN_MAP_MODE_JPG_REC:
1818         case ZORAN_MAP_MODE_JPG_PLAY:
1819
1820                 /* check range */
1821                 if (num < 0 || num >= fh->jpg_buffers.num_buffers ||
1822                     !fh->jpg_buffers.allocated) {
1823                         dprintk(1,
1824                                 KERN_ERR
1825                                 "%s: v4l2_buffer_status() - wrong number or buffers not allocated\n",
1826                                 ZR_DEVNAME(zr));
1827                         return -EINVAL;
1828                 }
1829
1830                 buf->type = (fh->map_mode == ZORAN_MAP_MODE_JPG_REC) ?
1831                               V4L2_BUF_TYPE_VIDEO_CAPTURE :
1832                               V4L2_BUF_TYPE_VIDEO_OUTPUT;
1833                 buf->length = fh->jpg_buffers.buffer_size;
1834
1835                 /* these variables are only written after frame has been captured */
1836                 if (fh->jpg_buffers.buffer[num].state == BUZ_STATE_DONE ||
1837                     fh->jpg_buffers.buffer[num].state == BUZ_STATE_USER) {
1838                         buf->sequence = fh->jpg_buffers.buffer[num].bs.seq;
1839                         buf->timestamp =
1840                             fh->jpg_buffers.buffer[num].bs.timestamp;
1841                         buf->bytesused =
1842                             fh->jpg_buffers.buffer[num].bs.length;
1843                         buf->flags |= V4L2_BUF_FLAG_DONE;
1844                 } else {
1845                         buf->flags |= V4L2_BUF_FLAG_QUEUED;
1846                 }
1847
1848                 /* which fields are these? */
1849                 if (fh->jpg_settings.TmpDcm != 1)
1850                         buf->field =
1851                             fh->jpg_settings.
1852                             odd_even ? V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
1853                 else
1854                         buf->field =
1855                             fh->jpg_settings.
1856                             odd_even ? V4L2_FIELD_SEQ_TB :
1857                             V4L2_FIELD_SEQ_BT;
1858
1859                 break;
1860
1861         default:
1862
1863                 dprintk(5,
1864                         KERN_ERR
1865                         "%s: v4l2_buffer_status() - invalid buffer type|map_mode (%d|%d)\n",
1866                         ZR_DEVNAME(zr), buf->type, fh->map_mode);
1867                 return -EINVAL;
1868         }
1869
1870         buf->memory = V4L2_MEMORY_MMAP;
1871         buf->index = num;
1872         buf->m.offset = buf->length * num;
1873
1874         return 0;
1875 }
1876 #endif
1877
1878 static int
1879 zoran_set_norm (struct zoran *zr,
1880                 int           norm) /* VIDEO_MODE_* */
1881 {
1882         int norm_encoder, on;
1883
1884         if (zr->v4l_buffers.active != ZORAN_FREE ||
1885             zr->jpg_buffers.active != ZORAN_FREE) {
1886                 dprintk(1,
1887                         KERN_WARNING
1888                         "%s: set_norm() called while in playback/capture mode\n",
1889                         ZR_DEVNAME(zr));
1890                 return -EBUSY;
1891         }
1892
1893         if (lock_norm && norm != zr->norm) {
1894                 if (lock_norm > 1) {
1895                         dprintk(1,
1896                                 KERN_WARNING
1897                                 "%s: set_norm() - TV standard is locked, can not switch norm\n",
1898                                 ZR_DEVNAME(zr));
1899                         return -EPERM;
1900                 } else {
1901                         dprintk(1,
1902                                 KERN_WARNING
1903                                 "%s: set_norm() - TV standard is locked, norm was not changed\n",
1904                                 ZR_DEVNAME(zr));
1905                         norm = zr->norm;
1906                 }
1907         }
1908
1909         if (norm != VIDEO_MODE_AUTO &&
1910             (norm < 0 || norm >= zr->card.norms ||
1911              !zr->card.tvn[norm])) {
1912                 dprintk(1,
1913                         KERN_ERR "%s: set_norm() - unsupported norm %d\n",
1914                         ZR_DEVNAME(zr), norm);
1915                 return -EINVAL;
1916         }
1917
1918         if (norm == VIDEO_MODE_AUTO) {
1919                 int status;
1920
1921                 /* if we have autodetect, ... */
1922                 struct video_decoder_capability caps;
1923                 decoder_command(zr, DECODER_GET_CAPABILITIES, &caps);
1924                 if (!(caps.flags & VIDEO_DECODER_AUTO)) {
1925                         dprintk(1, KERN_ERR "%s: norm=auto unsupported\n",
1926                                 ZR_DEVNAME(zr));
1927                         return -EINVAL;
1928                 }
1929
1930                 decoder_command(zr, DECODER_SET_NORM, &norm);
1931
1932                 /* let changes come into effect */
1933                 ssleep(2);
1934
1935                 decoder_command(zr, DECODER_GET_STATUS, &status);
1936                 if (!(status & DECODER_STATUS_GOOD)) {
1937                         dprintk(1,
1938                                 KERN_ERR
1939                                 "%s: set_norm() - no norm detected\n",
1940                                 ZR_DEVNAME(zr));
1941                         /* reset norm */
1942                         decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1943                         return -EIO;
1944                 }
1945
1946                 if (status & DECODER_STATUS_NTSC)
1947                         norm = VIDEO_MODE_NTSC;
1948                 else if (status & DECODER_STATUS_SECAM)
1949                         norm = VIDEO_MODE_SECAM;
1950                 else
1951                         norm = VIDEO_MODE_PAL;
1952         }
1953         zr->timing = zr->card.tvn[norm];
1954         norm_encoder = norm;
1955
1956         /* We switch overlay off and on since a change in the
1957          * norm needs different VFE settings */
1958         on = zr->overlay_active && !zr->v4l_memgrab_active;
1959         if (on)
1960                 zr36057_overlay(zr, 0);
1961
1962         decoder_command(zr, DECODER_SET_NORM, &norm);
1963         encoder_command(zr, ENCODER_SET_NORM, &norm_encoder);
1964
1965         if (on)
1966                 zr36057_overlay(zr, 1);
1967
1968         /* Make sure the changes come into effect */
1969         zr->norm = norm;
1970
1971         return 0;
1972 }
1973
1974 static int
1975 zoran_set_input (struct zoran *zr,
1976                  int           input)
1977 {
1978         int realinput;
1979
1980         if (input == zr->input) {
1981                 return 0;
1982         }
1983
1984         if (zr->v4l_buffers.active != ZORAN_FREE ||
1985             zr->jpg_buffers.active != ZORAN_FREE) {
1986                 dprintk(1,
1987                         KERN_WARNING
1988                         "%s: set_input() called while in playback/capture mode\n",
1989                         ZR_DEVNAME(zr));
1990                 return -EBUSY;
1991         }
1992
1993         if (input < 0 || input >= zr->card.inputs) {
1994                 dprintk(1,
1995                         KERN_ERR
1996                         "%s: set_input() - unnsupported input %d\n",
1997                         ZR_DEVNAME(zr), input);
1998                 return -EINVAL;
1999         }
2000
2001         realinput = zr->card.input[input].muxsel;
2002         zr->input = input;
2003
2004         decoder_command(zr, DECODER_SET_INPUT, &realinput);
2005
2006         return 0;
2007 }
2008
2009 /*
2010  *   ioctl routine
2011  */
2012
2013 static int
2014 zoran_do_ioctl (struct inode *inode,
2015                 struct file  *file,
2016                 unsigned int  cmd,
2017                 void         *arg)
2018 {
2019         struct zoran_fh *fh = file->private_data;
2020         struct zoran *zr = fh->zr;
2021         /* CAREFUL: used in multiple places here */
2022         struct zoran_jpg_settings settings;
2023
2024         /* we might have older buffers lying around... We don't want
2025          * to wait, but we do want to try cleaning them up ASAP. So
2026          * we try to obtain the lock and free them. If that fails, we
2027          * don't do anything and wait for the next turn. In the end,
2028          * zoran_close() or a new allocation will still free them...
2029          * This is just a 'the sooner the better' extra 'feature'
2030          *
2031          * We don't free the buffers right on munmap() because that
2032          * causes oopses (kfree() inside munmap() oopses for no
2033          * apparent reason - it's also not reproduceable in any way,
2034          * but moving the free code outside the munmap() handler fixes
2035          * all this... If someone knows why, please explain me (Ronald)
2036          */
2037         if (!!mutex_trylock(&zr->resource_lock)) {
2038                 /* we obtained it! Let's try to free some things */
2039                 if (fh->jpg_buffers.ready_to_be_freed)
2040                         jpg_fbuffer_free(file);
2041                 if (fh->v4l_buffers.ready_to_be_freed)
2042                         v4l_fbuffer_free(file);
2043
2044                 mutex_unlock(&zr->resource_lock);
2045         }
2046
2047         switch (cmd) {
2048
2049         case VIDIOCGCAP:
2050         {
2051                 struct video_capability *vcap = arg;
2052
2053                 dprintk(3, KERN_DEBUG "%s: VIDIOCGCAP\n", ZR_DEVNAME(zr));
2054
2055                 memset(vcap, 0, sizeof(struct video_capability));
2056                 strncpy(vcap->name, ZR_DEVNAME(zr), sizeof(vcap->name)-1);
2057                 vcap->type = ZORAN_VID_TYPE;
2058
2059                 vcap->channels = zr->card.inputs;
2060                 vcap->audios = 0;
2061                 mutex_lock(&zr->resource_lock);
2062                 vcap->maxwidth = BUZ_MAX_WIDTH;
2063                 vcap->maxheight = BUZ_MAX_HEIGHT;
2064                 vcap->minwidth = BUZ_MIN_WIDTH;
2065                 vcap->minheight = BUZ_MIN_HEIGHT;
2066                 mutex_unlock(&zr->resource_lock);
2067
2068                 return 0;
2069         }
2070                 break;
2071
2072         case VIDIOCGCHAN:
2073         {
2074                 struct video_channel *vchan = arg;
2075                 int channel = vchan->channel;
2076
2077                 dprintk(3, KERN_DEBUG "%s: VIDIOCGCHAN - channel=%d\n",
2078                         ZR_DEVNAME(zr), vchan->channel);
2079
2080                 memset(vchan, 0, sizeof(struct video_channel));
2081                 if (channel > zr->card.inputs || channel < 0) {
2082                         dprintk(1,
2083                                 KERN_ERR
2084                                 "%s: VIDIOCGCHAN on not existing channel %d\n",
2085                                 ZR_DEVNAME(zr), channel);
2086                         return -EINVAL;
2087                 }
2088
2089                 strcpy(vchan->name, zr->card.input[channel].name);
2090
2091                 vchan->tuners = 0;
2092                 vchan->flags = 0;
2093                 vchan->type = VIDEO_TYPE_CAMERA;
2094                 mutex_lock(&zr->resource_lock);
2095                 vchan->norm = zr->norm;
2096                 mutex_unlock(&zr->resource_lock);
2097                 vchan->channel = channel;
2098
2099                 return 0;
2100         }
2101                 break;
2102
2103                 /* RJ: the documentation at http://roadrunner.swansea.linux.org.uk/v4lapi.shtml says:
2104                  *
2105                  * * "The VIDIOCSCHAN ioctl takes an integer argument and switches the capture to this input."
2106                  * *                                 ^^^^^^^
2107                  * * The famos BTTV driver has it implemented with a struct video_channel argument
2108                  * * and we follow it for compatibility reasons
2109                  * *
2110                  * * BTW: this is the only way the user can set the norm!
2111                  */
2112
2113         case VIDIOCSCHAN:
2114         {
2115                 struct video_channel *vchan = arg;
2116                 int res;
2117
2118                 dprintk(3,
2119                         KERN_DEBUG
2120                         "%s: VIDIOCSCHAN - channel=%d, norm=%d\n",
2121                         ZR_DEVNAME(zr), vchan->channel, vchan->norm);
2122
2123                 mutex_lock(&zr->resource_lock);
2124                 if ((res = zoran_set_input(zr, vchan->channel)))
2125                         goto schan_unlock_and_return;
2126                 if ((res = zoran_set_norm(zr, vchan->norm)))
2127                         goto schan_unlock_and_return;
2128
2129                 /* Make sure the changes come into effect */
2130                 res = wait_grab_pending(zr);
2131         schan_unlock_and_return:
2132                 mutex_unlock(&zr->resource_lock);
2133                 return res;
2134         }
2135                 break;
2136
2137         case VIDIOCGPICT:
2138         {
2139                 struct video_picture *vpict = arg;
2140
2141                 dprintk(3, KERN_DEBUG "%s: VIDIOCGPICT\n", ZR_DEVNAME(zr));
2142
2143                 memset(vpict, 0, sizeof(struct video_picture));
2144                 mutex_lock(&zr->resource_lock);
2145                 vpict->hue = zr->hue;
2146                 vpict->brightness = zr->brightness;
2147                 vpict->contrast = zr->contrast;
2148                 vpict->colour = zr->saturation;
2149                 if (fh->overlay_settings.format) {
2150                         vpict->depth = fh->overlay_settings.format->depth;
2151                         vpict->palette = fh->overlay_settings.format->palette;
2152                 } else {
2153                         vpict->depth = 0;
2154                 }
2155                 mutex_unlock(&zr->resource_lock);
2156
2157                 return 0;
2158         }
2159                 break;
2160
2161         case VIDIOCSPICT:
2162         {
2163                 struct video_picture *vpict = arg;
2164                 int i;
2165
2166                 dprintk(3,
2167                         KERN_DEBUG
2168                         "%s: VIDIOCSPICT - bri=%d, hue=%d, col=%d, con=%d, dep=%d, pal=%d\n",
2169                         ZR_DEVNAME(zr), vpict->brightness, vpict->hue,
2170                         vpict->colour, vpict->contrast, vpict->depth,
2171                         vpict->palette);
2172
2173                 for (i = 0; i < zoran_num_formats; i++) {
2174                         const struct zoran_format *fmt = &zoran_formats[i];
2175
2176                         if (fmt->palette != -1 &&
2177                             fmt->flags & ZORAN_FORMAT_OVERLAY &&
2178                             fmt->palette == vpict->palette &&
2179                             fmt->depth == vpict->depth)
2180                                 break;
2181                 }
2182                 if (i == zoran_num_formats) {
2183                         dprintk(1,
2184                                 KERN_ERR
2185                                 "%s: VIDIOCSPICT - Invalid palette %d\n",
2186                                 ZR_DEVNAME(zr), vpict->palette);
2187                         return -EINVAL;
2188                 }
2189
2190                 mutex_lock(&zr->resource_lock);
2191
2192                 decoder_command(zr, DECODER_SET_PICTURE, vpict);
2193
2194                 zr->hue = vpict->hue;
2195                 zr->contrast = vpict->contrast;
2196                 zr->saturation = vpict->colour;
2197                 zr->brightness = vpict->brightness;
2198
2199                 fh->overlay_settings.format = &zoran_formats[i];
2200
2201                 mutex_unlock(&zr->resource_lock);
2202
2203                 return 0;
2204         }
2205                 break;
2206
2207         case VIDIOCCAPTURE:
2208         {
2209                 int *on = arg, res;
2210
2211                 dprintk(3, KERN_DEBUG "%s: VIDIOCCAPTURE - on=%d\n",
2212                         ZR_DEVNAME(zr), *on);
2213
2214                 mutex_lock(&zr->resource_lock);
2215                 res = setup_overlay(file, *on);
2216                 mutex_unlock(&zr->resource_lock);
2217
2218                 return res;
2219         }
2220                 break;
2221
2222         case VIDIOCGWIN:
2223         {
2224                 struct video_window *vwin = arg;
2225
2226                 dprintk(3, KERN_DEBUG "%s: VIDIOCGWIN\n", ZR_DEVNAME(zr));
2227
2228                 memset(vwin, 0, sizeof(struct video_window));
2229                 mutex_lock(&zr->resource_lock);
2230                 vwin->x = fh->overlay_settings.x;
2231                 vwin->y = fh->overlay_settings.y;
2232                 vwin->width = fh->overlay_settings.width;
2233                 vwin->height = fh->overlay_settings.height;
2234                 mutex_unlock(&zr->resource_lock);
2235                 vwin->clipcount = 0;
2236                 return 0;
2237         }
2238                 break;
2239
2240         case VIDIOCSWIN:
2241         {
2242                 struct video_window *vwin = arg;
2243                 int res;
2244
2245                 dprintk(3,
2246                         KERN_DEBUG
2247                         "%s: VIDIOCSWIN - x=%d, y=%d, w=%d, h=%d, clipcount=%d\n",
2248                         ZR_DEVNAME(zr), vwin->x, vwin->y, vwin->width,
2249                         vwin->height, vwin->clipcount);
2250
2251                 mutex_lock(&zr->resource_lock);
2252                 res =
2253                     setup_window(file, vwin->x, vwin->y, vwin->width,
2254                                  vwin->height, vwin->clips,
2255                                  vwin->clipcount, NULL);
2256                 mutex_unlock(&zr->resource_lock);
2257
2258                 return res;
2259         }
2260                 break;
2261
2262         case VIDIOCGFBUF:
2263         {
2264                 struct video_buffer *vbuf = arg;
2265
2266                 dprintk(3, KERN_DEBUG "%s: VIDIOCGFBUF\n", ZR_DEVNAME(zr));
2267
2268                 mutex_lock(&zr->resource_lock);
2269                 *vbuf = zr->buffer;
2270                 mutex_unlock(&zr->resource_lock);
2271                 return 0;
2272         }
2273                 break;
2274
2275         case VIDIOCSFBUF:
2276         {
2277                 struct video_buffer *vbuf = arg;
2278                 int i, res = 0;
2279
2280                 dprintk(3,
2281                         KERN_DEBUG
2282                         "%s: VIDIOCSFBUF - base=%p, w=%d, h=%d, depth=%d, bpl=%d\n",
2283                         ZR_DEVNAME(zr), vbuf->base, vbuf->width,
2284                         vbuf->height, vbuf->depth, vbuf->bytesperline);
2285
2286                 for (i = 0; i < zoran_num_formats; i++)
2287                         if (zoran_formats[i].depth == vbuf->depth)
2288                                 break;
2289                 if (i == zoran_num_formats) {
2290                         dprintk(1,
2291                                 KERN_ERR
2292                                 "%s: VIDIOCSFBUF - invalid fbuf depth %d\n",
2293                                 ZR_DEVNAME(zr), vbuf->depth);
2294                         return -EINVAL;
2295                 }
2296
2297                 mutex_lock(&zr->resource_lock);
2298                 res =
2299                     setup_fbuffer(file, vbuf->base, &zoran_formats[i],
2300                                   vbuf->width, vbuf->height,
2301                                   vbuf->bytesperline);
2302                 mutex_unlock(&zr->resource_lock);
2303
2304                 return res;
2305         }
2306                 break;
2307
2308         case VIDIOCSYNC:
2309         {
2310                 int *frame = arg, res;
2311
2312                 dprintk(3, KERN_DEBUG "%s: VIDIOCSYNC - frame=%d\n",
2313                         ZR_DEVNAME(zr), *frame);
2314
2315                 mutex_lock(&zr->resource_lock);
2316                 res = v4l_sync(file, *frame);
2317                 mutex_unlock(&zr->resource_lock);
2318                 if (!res)
2319                         zr->v4l_sync_tail++;
2320                 return res;
2321         }
2322                 break;
2323
2324         case VIDIOCMCAPTURE:
2325         {
2326                 struct video_mmap *vmap = arg;
2327                 int res;
2328
2329                 dprintk(3,
2330                         KERN_DEBUG
2331                         "%s: VIDIOCMCAPTURE - frame=%d, geom=%dx%d, fmt=%d\n",
2332                         ZR_DEVNAME(zr), vmap->frame, vmap->width, vmap->height,
2333                         vmap->format);
2334
2335                 mutex_lock(&zr->resource_lock);
2336                 res = v4l_grab(file, vmap);
2337                 mutex_unlock(&zr->resource_lock);
2338                 return res;
2339         }
2340                 break;
2341
2342         case VIDIOCGMBUF:
2343         {
2344                 struct video_mbuf *vmbuf = arg;
2345                 int i, res = 0;
2346
2347                 dprintk(3, KERN_DEBUG "%s: VIDIOCGMBUF\n", ZR_DEVNAME(zr));
2348
2349                 vmbuf->size =
2350                     fh->v4l_buffers.num_buffers *
2351                     fh->v4l_buffers.buffer_size;
2352                 vmbuf->frames = fh->v4l_buffers.num_buffers;
2353                 for (i = 0; i < vmbuf->frames; i++) {
2354                         vmbuf->offsets[i] =
2355                             i * fh->v4l_buffers.buffer_size;
2356                 }
2357
2358                 mutex_lock(&zr->resource_lock);
2359
2360                 if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
2361                         dprintk(1,
2362                                 KERN_ERR
2363                                 "%s: VIDIOCGMBUF - buffers already allocated\n",
2364                                 ZR_DEVNAME(zr));
2365                         res = -EINVAL;
2366                         goto v4l1reqbuf_unlock_and_return;
2367                 }
2368
2369                 if (v4l_fbuffer_alloc(file)) {
2370                         res = -ENOMEM;
2371                         goto v4l1reqbuf_unlock_and_return;
2372                 }
2373
2374                 /* The next mmap will map the V4L buffers */
2375                 fh->map_mode = ZORAN_MAP_MODE_RAW;
2376         v4l1reqbuf_unlock_and_return:
2377                 mutex_unlock(&zr->resource_lock);
2378
2379                 return res;
2380         }
2381                 break;
2382
2383         case VIDIOCGUNIT:
2384         {
2385                 struct video_unit *vunit = arg;
2386
2387                 dprintk(3, KERN_DEBUG "%s: VIDIOCGUNIT\n", ZR_DEVNAME(zr));
2388
2389                 vunit->video = zr->video_dev->minor;
2390                 vunit->vbi = VIDEO_NO_UNIT;
2391                 vunit->radio = VIDEO_NO_UNIT;
2392                 vunit->audio = VIDEO_NO_UNIT;
2393                 vunit->teletext = VIDEO_NO_UNIT;
2394
2395                 return 0;
2396         }
2397                 break;
2398
2399                 /*
2400                  * RJ: In principal we could support subcaptures for V4L grabbing.
2401                  *     Not even the famous BTTV driver has them, however.
2402                  *     If there should be a strong demand, one could consider
2403                  *     to implement them.
2404                  */
2405         case VIDIOCGCAPTURE:
2406         {
2407                 dprintk(3, KERN_ERR "%s: VIDIOCGCAPTURE not supported\n",
2408                         ZR_DEVNAME(zr));
2409                 return -EINVAL;
2410         }
2411                 break;
2412
2413         case VIDIOCSCAPTURE:
2414         {
2415                 dprintk(3, KERN_ERR "%s: VIDIOCSCAPTURE not supported\n",
2416                         ZR_DEVNAME(zr));
2417                 return -EINVAL;
2418         }
2419                 break;
2420
2421         case BUZIOC_G_PARAMS:
2422         {
2423                 struct zoran_params *bparams = arg;
2424
2425                 dprintk(3, KERN_DEBUG "%s: BUZIOC_G_PARAMS\n", ZR_DEVNAME(zr));
2426
2427                 memset(bparams, 0, sizeof(struct zoran_params));
2428                 bparams->major_version = MAJOR_VERSION;
2429                 bparams->minor_version = MINOR_VERSION;
2430
2431                 mutex_lock(&zr->resource_lock);
2432
2433                 bparams->norm = zr->norm;
2434                 bparams->input = zr->input;
2435
2436                 bparams->decimation = fh->jpg_settings.decimation;
2437                 bparams->HorDcm = fh->jpg_settings.HorDcm;
2438                 bparams->VerDcm = fh->jpg_settings.VerDcm;
2439                 bparams->TmpDcm = fh->jpg_settings.TmpDcm;
2440                 bparams->field_per_buff = fh->jpg_settings.field_per_buff;
2441                 bparams->img_x = fh->jpg_settings.img_x;
2442                 bparams->img_y = fh->jpg_settings.img_y;
2443                 bparams->img_width = fh->jpg_settings.img_width;
2444                 bparams->img_height = fh->jpg_settings.img_height;
2445                 bparams->odd_even = fh->jpg_settings.odd_even;
2446
2447                 bparams->quality = fh->jpg_settings.jpg_comp.quality;
2448                 bparams->APPn = fh->jpg_settings.jpg_comp.APPn;
2449                 bparams->APP_len = fh->jpg_settings.jpg_comp.APP_len;
2450                 memcpy(bparams->APP_data,
2451                        fh->jpg_settings.jpg_comp.APP_data,
2452                        sizeof(bparams->APP_data));
2453                 bparams->COM_len = zr->jpg_settings.jpg_comp.COM_len;
2454                 memcpy(bparams->COM_data,
2455                        fh->jpg_settings.jpg_comp.COM_data,
2456                        sizeof(bparams->COM_data));
2457                 bparams->jpeg_markers =
2458                     fh->jpg_settings.jpg_comp.jpeg_markers;
2459
2460                 mutex_unlock(&zr->resource_lock);
2461
2462                 bparams->VFIFO_FB = 0;
2463
2464                 return 0;
2465         }
2466                 break;
2467
2468         case BUZIOC_S_PARAMS:
2469         {
2470                 struct zoran_params *bparams = arg;
2471                 int res = 0;
2472
2473                 dprintk(3, KERN_DEBUG "%s: BUZIOC_S_PARAMS\n", ZR_DEVNAME(zr));
2474
2475                 settings.decimation = bparams->decimation;
2476                 settings.HorDcm = bparams->HorDcm;
2477                 settings.VerDcm = bparams->VerDcm;
2478                 settings.TmpDcm = bparams->TmpDcm;
2479                 settings.field_per_buff = bparams->field_per_buff;
2480                 settings.img_x = bparams->img_x;
2481                 settings.img_y = bparams->img_y;
2482                 settings.img_width = bparams->img_width;
2483                 settings.img_height = bparams->img_height;
2484                 settings.odd_even = bparams->odd_even;
2485
2486                 settings.jpg_comp.quality = bparams->quality;
2487                 settings.jpg_comp.APPn = bparams->APPn;
2488                 settings.jpg_comp.APP_len = bparams->APP_len;
2489                 memcpy(settings.jpg_comp.APP_data, bparams->APP_data,
2490                        sizeof(bparams->APP_data));
2491                 settings.jpg_comp.COM_len = bparams->COM_len;
2492                 memcpy(settings.jpg_comp.COM_data, bparams->COM_data,
2493                        sizeof(bparams->COM_data));
2494                 settings.jpg_comp.jpeg_markers = bparams->jpeg_markers;
2495
2496                 mutex_lock(&zr->resource_lock);
2497
2498                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2499                         dprintk(1,
2500                                 KERN_ERR
2501                                 "%s: BUZIOC_S_PARAMS called, but Buz in capture/playback mode\n",
2502                                 ZR_DEVNAME(zr));
2503                         res = -EINVAL;
2504                         goto sparams_unlock_and_return;
2505                 }
2506
2507                 /* Check the params first before overwriting our
2508                  * nternal values */
2509                 if (zoran_check_jpg_settings(zr, &settings)) {
2510                         res = -EINVAL;
2511                         goto sparams_unlock_and_return;
2512                 }
2513
2514                 fh->jpg_settings = settings;
2515         sparams_unlock_and_return:
2516                 mutex_unlock(&zr->resource_lock);
2517
2518                 return res;
2519         }
2520                 break;
2521
2522         case BUZIOC_REQBUFS:
2523         {
2524                 struct zoran_requestbuffers *breq = arg;
2525                 int res = 0;
2526
2527                 dprintk(3,
2528                         KERN_DEBUG
2529                         "%s: BUZIOC_REQBUFS - count=%lu, size=%lu\n",
2530                         ZR_DEVNAME(zr), breq->count, breq->size);
2531
2532                 /* Enforce reasonable lower and upper limits */
2533                 if (breq->count < 4)
2534                         breq->count = 4;        /* Could be choosen smaller */
2535                 if (breq->count > jpg_nbufs)
2536                         breq->count = jpg_nbufs;
2537                 breq->size = PAGE_ALIGN(breq->size);
2538                 if (breq->size < 8192)
2539                         breq->size = 8192;      /* Arbitrary */
2540                 /* breq->size is limited by 1 page for the stat_com
2541                  * tables to a Maximum of 2 MB */
2542                 if (breq->size > jpg_bufsize)
2543                         breq->size = jpg_bufsize;
2544                 if (fh->jpg_buffers.need_contiguous &&
2545                     breq->size > MAX_KMALLOC_MEM)
2546                         breq->size = MAX_KMALLOC_MEM;
2547
2548                 mutex_lock(&zr->resource_lock);
2549
2550                 if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
2551                         dprintk(1,
2552                                 KERN_ERR
2553                                 "%s: BUZIOC_REQBUFS - buffers allready allocated\n",
2554                                 ZR_DEVNAME(zr));
2555                         res = -EBUSY;
2556                         goto jpgreqbuf_unlock_and_return;
2557                 }
2558
2559                 fh->jpg_buffers.num_buffers = breq->count;
2560                 fh->jpg_buffers.buffer_size = breq->size;
2561
2562                 if (jpg_fbuffer_alloc(file)) {
2563                         res = -ENOMEM;
2564                         goto jpgreqbuf_unlock_and_return;
2565                 }
2566
2567                 /* The next mmap will map the MJPEG buffers - could
2568                  * also be *_PLAY, but it doesn't matter here */
2569                 fh->map_mode = ZORAN_MAP_MODE_JPG_REC;
2570         jpgreqbuf_unlock_and_return:
2571                 mutex_unlock(&zr->resource_lock);
2572
2573                 return res;
2574         }
2575                 break;
2576
2577         case BUZIOC_QBUF_CAPT:
2578         {
2579                 int *frame = arg, res;
2580
2581                 dprintk(3, KERN_DEBUG "%s: BUZIOC_QBUF_CAPT - frame=%d\n",
2582                         ZR_DEVNAME(zr), *frame);
2583
2584                 mutex_lock(&zr->resource_lock);
2585                 res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_COMPRESS);
2586                 mutex_unlock(&zr->resource_lock);
2587
2588                 return res;
2589         }
2590                 break;
2591
2592         case BUZIOC_QBUF_PLAY:
2593         {
2594                 int *frame = arg, res;
2595
2596                 dprintk(3, KERN_DEBUG "%s: BUZIOC_QBUF_PLAY - frame=%d\n",
2597                         ZR_DEVNAME(zr), *frame);
2598
2599                 mutex_lock(&zr->resource_lock);
2600                 res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_DECOMPRESS);
2601                 mutex_unlock(&zr->resource_lock);
2602
2603                 return res;
2604         }
2605                 break;
2606
2607         case BUZIOC_SYNC:
2608         {
2609                 struct zoran_sync *bsync = arg;
2610                 int res;
2611
2612                 dprintk(3, KERN_DEBUG "%s: BUZIOC_SYNC\n", ZR_DEVNAME(zr));
2613
2614                 mutex_lock(&zr->resource_lock);
2615                 res = jpg_sync(file, bsync);
2616                 mutex_unlock(&zr->resource_lock);
2617
2618                 return res;
2619         }
2620                 break;
2621
2622         case BUZIOC_G_STATUS:
2623         {
2624                 struct zoran_status *bstat = arg;
2625                 int norm, input, status, res = 0;
2626
2627                 dprintk(3, KERN_DEBUG "%s: BUZIOC_G_STATUS\n", ZR_DEVNAME(zr));
2628
2629                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2630                         dprintk(1,
2631                                 KERN_ERR
2632                                 "%s: BUZIOC_G_STATUS called but Buz in capture/playback mode\n",
2633                                 ZR_DEVNAME(zr));
2634                         return -EINVAL;
2635                 }
2636
2637                 input = zr->card.input[bstat->input].muxsel;
2638                 norm = VIDEO_MODE_AUTO;
2639
2640                 mutex_lock(&zr->resource_lock);
2641
2642                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2643                         dprintk(1,
2644                                 KERN_ERR
2645                                 "%s: BUZIOC_G_STATUS called, but Buz in capture/playback mode\n",
2646                                 ZR_DEVNAME(zr));
2647                         res = -EINVAL;
2648                         goto gstat_unlock_and_return;
2649                 }
2650
2651                 decoder_command(zr, DECODER_SET_INPUT, &input);
2652                 decoder_command(zr, DECODER_SET_NORM, &norm);
2653
2654                 /* sleep 1 second */
2655                 ssleep(1);
2656
2657                 /* Get status of video decoder */
2658                 decoder_command(zr, DECODER_GET_STATUS, &status);
2659
2660                 /* restore previous input and norm */
2661                 input = zr->card.input[zr->input].muxsel;
2662                 decoder_command(zr, DECODER_SET_INPUT, &input);
2663                 decoder_command(zr, DECODER_SET_NORM, &zr->norm);
2664         gstat_unlock_and_return:
2665                 mutex_unlock(&zr->resource_lock);
2666
2667                 if (!res) {
2668                         bstat->signal =
2669                             (status & DECODER_STATUS_GOOD) ? 1 : 0;
2670                         if (status & DECODER_STATUS_NTSC)
2671                                 bstat->norm = VIDEO_MODE_NTSC;
2672                         else if (status & DECODER_STATUS_SECAM)
2673                                 bstat->norm = VIDEO_MODE_SECAM;
2674                         else
2675                                 bstat->norm = VIDEO_MODE_PAL;
2676
2677                         bstat->color =
2678                             (status & DECODER_STATUS_COLOR) ? 1 : 0;
2679                 }
2680
2681                 return res;
2682         }
2683                 break;
2684
2685 #ifdef CONFIG_VIDEO_V4L2
2686
2687                 /* The new video4linux2 capture interface - much nicer than video4linux1, since
2688                  * it allows for integrating the JPEG capturing calls inside standard v4l2
2689                  */
2690
2691         case VIDIOC_QUERYCAP:
2692         {
2693                 struct v4l2_capability *cap = arg;
2694
2695                 dprintk(3, KERN_DEBUG "%s: VIDIOC_QUERYCAP\n", ZR_DEVNAME(zr));
2696
2697                 memset(cap, 0, sizeof(*cap));
2698                 strncpy(cap->card, ZR_DEVNAME(zr), sizeof(cap->card)-1);
2699                 strncpy(cap->driver, "zoran", sizeof(cap->driver)-1);
2700                 snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
2701                          pci_name(zr->pci_dev));
2702                 cap->version =
2703                     KERNEL_VERSION(MAJOR_VERSION, MINOR_VERSION,
2704                                    RELEASE_VERSION);
2705                 cap->capabilities = ZORAN_V4L2_VID_FLAGS;
2706
2707                 return 0;
2708         }
2709                 break;
2710
2711         case VIDIOC_ENUM_FMT:
2712         {
2713                 struct v4l2_fmtdesc *fmt = arg;
2714                 int index = fmt->index, num = -1, i, flag = 0, type =
2715                     fmt->type;
2716
2717                 dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUM_FMT - index=%d\n",
2718                         ZR_DEVNAME(zr), fmt->index);
2719
2720                 switch (fmt->type) {
2721                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2722                         flag = ZORAN_FORMAT_CAPTURE;
2723                         break;
2724                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2725                         flag = ZORAN_FORMAT_PLAYBACK;
2726                         break;
2727                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2728                         flag = ZORAN_FORMAT_OVERLAY;
2729                         break;
2730                 default:
2731                         dprintk(1,
2732                                 KERN_ERR
2733                                 "%s: VIDIOC_ENUM_FMT - unknown type %d\n",
2734                                 ZR_DEVNAME(zr), fmt->type);
2735                         return -EINVAL;
2736                 }
2737
2738                 for (i = 0; i < zoran_num_formats; i++) {
2739                         if (zoran_formats[i].flags & flag)
2740                                 num++;
2741                         if (num == fmt->index)
2742                                 break;
2743                 }
2744                 if (fmt->index < 0 /* late, but not too late */  ||
2745                     i == zoran_num_formats)
2746                         return -EINVAL;
2747
2748                 memset(fmt, 0, sizeof(*fmt));
2749                 fmt->index = index;
2750                 fmt->type = type;
2751                 strncpy(fmt->description, zoran_formats[i].name, sizeof(fmt->description)-1);
2752                 fmt->pixelformat = zoran_formats[i].fourcc;
2753                 if (zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED)
2754                         fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;
2755
2756                 return 0;
2757         }
2758                 break;
2759
2760         case VIDIOC_G_FMT:
2761         {
2762                 struct v4l2_format *fmt = arg;
2763                 int type = fmt->type;
2764
2765                 dprintk(5, KERN_DEBUG "%s: VIDIOC_G_FMT\n", ZR_DEVNAME(zr));
2766
2767                 memset(fmt, 0, sizeof(*fmt));
2768                 fmt->type = type;
2769
2770                 switch (fmt->type) {
2771                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2772
2773                         mutex_lock(&zr->resource_lock);
2774
2775                         fmt->fmt.win.w.left = fh->overlay_settings.x;
2776                         fmt->fmt.win.w.top = fh->overlay_settings.y;
2777                         fmt->fmt.win.w.width = fh->overlay_settings.width;
2778                         fmt->fmt.win.w.height =
2779                             fh->overlay_settings.height;
2780                         if (fh->overlay_settings.width * 2 >
2781                             BUZ_MAX_HEIGHT)
2782                                 fmt->fmt.win.field = V4L2_FIELD_INTERLACED;
2783                         else
2784                                 fmt->fmt.win.field = V4L2_FIELD_TOP;
2785
2786                         mutex_unlock(&zr->resource_lock);
2787
2788                         break;
2789
2790                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2791                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2792
2793                         mutex_lock(&zr->resource_lock);
2794
2795                         if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2796                             fh->map_mode == ZORAN_MAP_MODE_RAW) {
2797
2798                                 fmt->fmt.pix.width =
2799                                     fh->v4l_settings.width;
2800                                 fmt->fmt.pix.height =
2801                                     fh->v4l_settings.height;
2802                                 fmt->fmt.pix.sizeimage =
2803                                     fh->v4l_buffers.buffer_size;
2804                                 fmt->fmt.pix.pixelformat =
2805                                     fh->v4l_settings.format->fourcc;
2806                                 fmt->fmt.pix.colorspace =
2807                                     fh->v4l_settings.format->colorspace;
2808                                 fmt->fmt.pix.bytesperline = 0;
2809                                 if (BUZ_MAX_HEIGHT <
2810                                     (fh->v4l_settings.height * 2))
2811                                         fmt->fmt.pix.field =
2812                                             V4L2_FIELD_INTERLACED;
2813                                 else
2814                                         fmt->fmt.pix.field =
2815                                             V4L2_FIELD_TOP;
2816
2817                         } else {
2818
2819                                 fmt->fmt.pix.width =
2820                                     fh->jpg_settings.img_width /
2821                                     fh->jpg_settings.HorDcm;
2822                                 fmt->fmt.pix.height =
2823                                     fh->jpg_settings.img_height /
2824                                     (fh->jpg_settings.VerDcm *
2825                                      fh->jpg_settings.TmpDcm);
2826                                 fmt->fmt.pix.sizeimage =
2827                                     zoran_v4l2_calc_bufsize(&fh->
2828                                                             jpg_settings);
2829                                 fmt->fmt.pix.pixelformat =
2830                                     V4L2_PIX_FMT_MJPEG;
2831                                 if (fh->jpg_settings.TmpDcm == 1)
2832                                         fmt->fmt.pix.field =
2833                                             (fh->jpg_settings.
2834                                              odd_even ? V4L2_FIELD_SEQ_BT :
2835                                              V4L2_FIELD_SEQ_BT);
2836                                 else
2837                                         fmt->fmt.pix.field =
2838                                             (fh->jpg_settings.
2839                                              odd_even ? V4L2_FIELD_TOP :
2840                                              V4L2_FIELD_BOTTOM);
2841
2842                                 fmt->fmt.pix.bytesperline = 0;
2843                                 fmt->fmt.pix.colorspace =
2844                                     V4L2_COLORSPACE_SMPTE170M;
2845                         }
2846
2847                         mutex_unlock(&zr->resource_lock);
2848
2849                         break;
2850
2851                 default:
2852                         dprintk(1,
2853                                 KERN_ERR
2854                                 "%s: VIDIOC_G_FMT - unsupported type %d\n",
2855                                 ZR_DEVNAME(zr), fmt->type);
2856                         return -EINVAL;
2857                 }
2858                 return 0;
2859         }
2860                 break;
2861
2862         case VIDIOC_S_FMT:
2863         {
2864                 struct v4l2_format *fmt = arg;
2865                 int i, res = 0;
2866                 __u32 printformat;
2867
2868                 dprintk(3, KERN_DEBUG "%s: VIDIOC_S_FMT - type=%d, ",
2869                         ZR_DEVNAME(zr), fmt->type);
2870
2871                 switch (fmt->type) {
2872                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2873
2874                         dprintk(3, "x=%d, y=%d, w=%d, h=%d, cnt=%d, map=0x%p\n",
2875                                 fmt->fmt.win.w.left, fmt->fmt.win.w.top,
2876                                 fmt->fmt.win.w.width,
2877                                 fmt->fmt.win.w.height,
2878                                 fmt->fmt.win.clipcount,
2879                                 fmt->fmt.win.bitmap);
2880                         mutex_lock(&zr->resource_lock);
2881                         res =
2882                             setup_window(file, fmt->fmt.win.w.left,
2883                                          fmt->fmt.win.w.top,
2884                                          fmt->fmt.win.w.width,
2885                                          fmt->fmt.win.w.height,
2886                                          (struct video_clip __user *)
2887                                            fmt->fmt.win.clips,
2888                                          fmt->fmt.win.clipcount,
2889                                          fmt->fmt.win.bitmap);
2890                         mutex_unlock(&zr->resource_lock);
2891                         return res;
2892                         break;
2893
2894                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2895                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2896
2897                         printformat =
2898                             __cpu_to_le32(fmt->fmt.pix.pixelformat);
2899                         dprintk(3, "size=%dx%d, fmt=0x%x (%4.4s)\n",
2900                                 fmt->fmt.pix.width, fmt->fmt.pix.height,
2901                                 fmt->fmt.pix.pixelformat,
2902                                 (char *) &printformat);
2903
2904                         if (fmt->fmt.pix.bytesperline > 0) {
2905                                 dprintk(5,
2906                                         KERN_ERR "%s: bpl not supported\n",
2907                                         ZR_DEVNAME(zr));
2908                                 return -EINVAL;
2909                         }
2910
2911                         /* we can be requested to do JPEG/raw playback/capture */
2912                         if (!
2913                             (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2914                              (fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
2915                               fmt->fmt.pix.pixelformat ==
2916                               V4L2_PIX_FMT_MJPEG))) {
2917                                 dprintk(1,
2918                                         KERN_ERR
2919                                         "%s: VIDIOC_S_FMT - unknown type %d/0x%x(%4.4s) combination\n",
2920                                         ZR_DEVNAME(zr), fmt->type,
2921                                         fmt->fmt.pix.pixelformat,
2922                                         (char *) &printformat);
2923                                 return -EINVAL;
2924                         }
2925
2926                         if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG) {
2927                                 mutex_lock(&zr->resource_lock);
2928
2929                                 settings = fh->jpg_settings;
2930
2931                                 if (fh->v4l_buffers.allocated ||
2932                                     fh->jpg_buffers.allocated) {
2933                                         dprintk(1,
2934                                                 KERN_ERR
2935                                                 "%s: VIDIOC_S_FMT - cannot change capture mode\n",
2936                                                 ZR_DEVNAME(zr));
2937                                         res = -EBUSY;
2938                                         goto sfmtjpg_unlock_and_return;
2939                                 }
2940
2941                                 /* we actually need to set 'real' parameters now */
2942                                 if ((fmt->fmt.pix.height * 2) >
2943                                     BUZ_MAX_HEIGHT)
2944                                         settings.TmpDcm = 1;
2945                                 else
2946                                         settings.TmpDcm = 2;
2947                                 settings.decimation = 0;
2948                                 if (fmt->fmt.pix.height <=
2949                                     fh->jpg_settings.img_height / 2)
2950                                         settings.VerDcm = 2;
2951                                 else
2952                                         settings.VerDcm = 1;
2953                                 if (fmt->fmt.pix.width <=
2954                                     fh->jpg_settings.img_width / 4)
2955                                         settings.HorDcm = 4;
2956                                 else if (fmt->fmt.pix.width <=
2957                                          fh->jpg_settings.img_width / 2)
2958                                         settings.HorDcm = 2;
2959                                 else
2960                                         settings.HorDcm = 1;
2961                                 if (settings.TmpDcm == 1)
2962                                         settings.field_per_buff = 2;
2963                                 else
2964                                         settings.field_per_buff = 1;
2965
2966                                 /* check */
2967                                 if ((res =
2968                                      zoran_check_jpg_settings(zr,
2969                                                               &settings)))
2970                                         goto sfmtjpg_unlock_and_return;
2971
2972                                 /* it's ok, so set them */
2973                                 fh->jpg_settings = settings;
2974
2975                                 /* tell the user what we actually did */
2976                                 fmt->fmt.pix.width =
2977                                     settings.img_width / settings.HorDcm;
2978                                 fmt->fmt.pix.height =
2979                                     settings.img_height * 2 /
2980                                     (settings.TmpDcm * settings.VerDcm);
2981                                 if (settings.TmpDcm == 1)
2982                                         fmt->fmt.pix.field =
2983                                             (fh->jpg_settings.
2984                                              odd_even ? V4L2_FIELD_SEQ_TB :
2985                                              V4L2_FIELD_SEQ_BT);
2986                                 else
2987                                         fmt->fmt.pix.field =
2988                                             (fh->jpg_settings.
2989                                              odd_even ? V4L2_FIELD_TOP :
2990                                              V4L2_FIELD_BOTTOM);
2991                                 fh->jpg_buffers.buffer_size =
2992                                     zoran_v4l2_calc_bufsize(&fh->
2993                                                             jpg_settings);
2994                                 fmt->fmt.pix.sizeimage =
2995                                     fh->jpg_buffers.buffer_size;
2996
2997                                 /* we hereby abuse this variable to show that
2998                                  * we're gonna do mjpeg capture */
2999                                 fh->map_mode =
3000                                     (fmt->type ==
3001                                      V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
3002                                     ZORAN_MAP_MODE_JPG_REC :
3003                                     ZORAN_MAP_MODE_JPG_PLAY;
3004                         sfmtjpg_unlock_and_return:
3005                                 mutex_unlock(&zr->resource_lock);
3006                         } else {
3007                                 for (i = 0; i < zoran_num_formats; i++)
3008                                         if (fmt->fmt.pix.pixelformat ==
3009                                             zoran_formats[i].fourcc)
3010                                                 break;
3011                                 if (i == zoran_num_formats) {
3012                                         dprintk(1,
3013                                                 KERN_ERR
3014                                                 "%s: VIDIOC_S_FMT - unknown/unsupported format 0x%x (%4.4s)\n",
3015                                                 ZR_DEVNAME(zr),
3016                                                 fmt->fmt.pix.pixelformat,
3017                                                 (char *) &printformat);
3018                                         return -EINVAL;
3019                                 }
3020                                 mutex_lock(&zr->resource_lock);
3021                                 if (fh->jpg_buffers.allocated ||
3022                                     (fh->v4l_buffers.allocated &&
3023                                      fh->v4l_buffers.active !=
3024                                      ZORAN_FREE)) {
3025                                         dprintk(1,
3026                                                 KERN_ERR
3027                                                 "%s: VIDIOC_S_FMT - cannot change capture mode\n",
3028                                                 ZR_DEVNAME(zr));
3029                                         res = -EBUSY;
3030                                         goto sfmtv4l_unlock_and_return;
3031                                 }
3032                                 if (fmt->fmt.pix.height > BUZ_MAX_HEIGHT)
3033                                         fmt->fmt.pix.height =
3034                                             BUZ_MAX_HEIGHT;
3035                                 if (fmt->fmt.pix.width > BUZ_MAX_WIDTH)
3036                                         fmt->fmt.pix.width = BUZ_MAX_WIDTH;
3037
3038                                 if ((res =
3039                                      zoran_v4l_set_format(file,
3040                                                           fmt->fmt.pix.
3041                                                           width,
3042                                                           fmt->fmt.pix.
3043                                                           height,
3044                                                           &zoran_formats
3045                                                           [i])))
3046                                         goto sfmtv4l_unlock_and_return;
3047
3048                                 /* tell the user the
3049                                  * results/missing stuff */
3050                                 fmt->fmt.pix.sizeimage = fh->v4l_buffers.buffer_size    /*zr->gbpl * zr->gheight */
3051                                     ;
3052                                 if (BUZ_MAX_HEIGHT <
3053                                     (fh->v4l_settings.height * 2))
3054                                         fmt->fmt.pix.field =
3055                                             V4L2_FIELD_INTERLACED;
3056                                 else
3057                                         fmt->fmt.pix.field =
3058                                             V4L2_FIELD_TOP;
3059
3060                                 fh->map_mode = ZORAN_MAP_MODE_RAW;
3061                         sfmtv4l_unlock_and_return:
3062                                 mutex_unlock(&zr->resource_lock);
3063                         }
3064
3065                         break;
3066
3067                 default:
3068                         dprintk(3, "unsupported\n");
3069                         dprintk(1,
3070                                 KERN_ERR
3071                                 "%s: VIDIOC_S_FMT - unsupported type %d\n",
3072                                 ZR_DEVNAME(zr), fmt->type);
3073                         return -EINVAL;
3074                 }
3075
3076                 return res;
3077         }
3078                 break;
3079
3080         case VIDIOC_G_FBUF:
3081         {
3082                 struct v4l2_framebuffer *fb = arg;
3083
3084                 dprintk(3, KERN_DEBUG "%s: VIDIOC_G_FBUF\n", ZR_DEVNAME(zr));
3085
3086                 memset(fb, 0, sizeof(*fb));
3087                 mutex_lock(&zr->resource_lock);
3088                 fb->base = zr->buffer.base;
3089                 fb->fmt.width = zr->buffer.width;
3090                 fb->fmt.height = zr->buffer.height;
3091                 if (zr->overlay_settings.format) {
3092                         fb->fmt.pixelformat =
3093                                 fh->overlay_settings.format->fourcc;
3094                 }
3095                 fb->fmt.bytesperline = zr->buffer.bytesperline;
3096                 mutex_unlock(&zr->resource_lock);
3097                 fb->fmt.colorspace = V4L2_COLORSPACE_SRGB;
3098                 fb->fmt.field = V4L2_FIELD_INTERLACED;
3099                 fb->flags = V4L2_FBUF_FLAG_OVERLAY;
3100                 fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
3101
3102                 return 0;
3103         }
3104                 break;
3105
3106         case VIDIOC_S_FBUF:
3107         {
3108                 int i, res = 0;
3109                 struct v4l2_framebuffer *fb = arg;
3110                 __u32 printformat = __cpu_to_le32(fb->fmt.pixelformat);
3111
3112                 dprintk(3,
3113                         KERN_DEBUG
3114                         "%s: VIDIOC_S_FBUF - base=0x%p, size=%dx%d, bpl=%d, fmt=0x%x (%4.4s)\n",
3115                         ZR_DEVNAME(zr), fb->base, fb->fmt.width, fb->fmt.height,
3116                         fb->fmt.bytesperline, fb->fmt.pixelformat,
3117                         (char *) &printformat);
3118
3119                 for (i = 0; i < zoran_num_formats; i++)
3120                         if (zoran_formats[i].fourcc == fb->fmt.pixelformat)
3121                                 break;
3122                 if (i == zoran_num_formats) {
3123                         dprintk(1,
3124                                 KERN_ERR
3125                                 "%s: VIDIOC_S_FBUF - format=0x%x (%4.4s) not allowed\n",
3126                                 ZR_DEVNAME(zr), fb->fmt.pixelformat,
3127                                 (char *) &printformat);
3128                         return -EINVAL;
3129                 }
3130
3131                 mutex_lock(&zr->resource_lock);
3132                 res =
3133                     setup_fbuffer(file, fb->base, &zoran_formats[i],
3134                                   fb->fmt.width, fb->fmt.height,
3135                                   fb->fmt.bytesperline);
3136                 mutex_unlock(&zr->resource_lock);
3137
3138                 return res;
3139         }
3140                 break;
3141
3142         case VIDIOC_OVERLAY:
3143         {
3144                 int *on = arg, res;
3145
3146                 dprintk(3, KERN_DEBUG "%s: VIDIOC_PREVIEW - on=%d\n",
3147                         ZR_DEVNAME(zr), *on);
3148
3149                 mutex_lock(&zr->resource_lock);
3150                 res = setup_overlay(file, *on);
3151                 mutex_unlock(&zr->resource_lock);
3152
3153                 return res;
3154         }
3155                 break;
3156
3157         case VIDIOC_REQBUFS:
3158         {
3159                 struct v4l2_requestbuffers *req = arg;
3160                 int res = 0;
3161
3162                 dprintk(3, KERN_DEBUG "%s: VIDIOC_REQBUFS - type=%d\n",
3163                         ZR_DEVNAME(zr), req->type);
3164
3165                 if (req->memory != V4L2_MEMORY_MMAP) {
3166                         dprintk(1,
3167                                 KERN_ERR
3168                                 "%s: only MEMORY_MMAP capture is supported, not %d\n",
3169                                 ZR_DEVNAME(zr), req->memory);
3170                         return -EINVAL;
3171                 }
3172
3173                 mutex_lock(&zr->resource_lock);
3174
3175                 if (fh->v4l_buffers.allocated || fh->jpg_buffers.allocated) {
3176                         dprintk(1,
3177                                 KERN_ERR
3178                                 "%s: VIDIOC_REQBUFS - buffers allready allocated\n",
3179                                 ZR_DEVNAME(zr));
3180                         res = -EBUSY;
3181                         goto v4l2reqbuf_unlock_and_return;
3182                 }
3183
3184                 if (fh->map_mode == ZORAN_MAP_MODE_RAW &&
3185                     req->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
3186
3187                         /* control user input */
3188                         if (req->count < 2)
3189                                 req->count = 2;
3190                         if (req->count > v4l_nbufs)
3191                                 req->count = v4l_nbufs;
3192                         fh->v4l_buffers.num_buffers = req->count;
3193
3194                         if (v4l_fbuffer_alloc(file)) {
3195                                 res = -ENOMEM;
3196                                 goto v4l2reqbuf_unlock_and_return;
3197                         }
3198
3199                         /* The next mmap will map the V4L buffers */
3200                         fh->map_mode = ZORAN_MAP_MODE_RAW;
3201
3202                 } else if (fh->map_mode == ZORAN_MAP_MODE_JPG_REC ||
3203                            fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY) {
3204
3205                         /* we need to calculate size ourselves now */
3206                         if (req->count < 4)
3207                                 req->count = 4;
3208                         if (req->count > jpg_nbufs)
3209                                 req->count = jpg_nbufs;
3210                         fh->jpg_buffers.num_buffers = req->count;
3211                         fh->jpg_buffers.buffer_size =
3212                             zoran_v4l2_calc_bufsize(&fh->jpg_settings);
3213
3214                         if (jpg_fbuffer_alloc(file)) {
3215                                 res = -ENOMEM;
3216                                 goto v4l2reqbuf_unlock_and_return;
3217                         }
3218
3219                         /* The next mmap will map the MJPEG buffers */
3220                         if (req->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
3221                                 fh->map_mode = ZORAN_MAP_MODE_JPG_REC;
3222                         else
3223                                 fh->map_mode = ZORAN_MAP_MODE_JPG_PLAY;
3224
3225                 } else {
3226                         dprintk(1,
3227                                 KERN_ERR
3228                                 "%s: VIDIOC_REQBUFS - unknown type %d\n",
3229                                 ZR_DEVNAME(zr), req->type);
3230                         res = -EINVAL;
3231                         goto v4l2reqbuf_unlock_and_return;
3232                 }
3233         v4l2reqbuf_unlock_and_return:
3234                 mutex_unlock(&zr->resource_lock);
3235
3236                 return 0;
3237         }
3238                 break;
3239
3240         case VIDIOC_QUERYBUF:
3241         {
3242                 struct v4l2_buffer *buf = arg;
3243                 __u32 type = buf->type;
3244                 int index = buf->index, res;
3245
3246                 dprintk(3,
3247                         KERN_DEBUG
3248                         "%s: VIDIOC_QUERYBUF - index=%d, type=%d\n",
3249                         ZR_DEVNAME(zr), buf->index, buf->type);
3250
3251                 memset(buf, 0, sizeof(buf));
3252                 buf->type = type;
3253                 buf->index = index;
3254
3255                 mutex_lock(&zr->resource_lock);
3256                 res = zoran_v4l2_buffer_status(file, buf, buf->index);
3257                 mutex_unlock(&zr->resource_lock);
3258
3259                 return res;
3260         }
3261                 break;
3262
3263         case VIDIOC_QBUF:
3264         {
3265                 struct v4l2_buffer *buf = arg;
3266                 int res = 0, codec_mode, buf_type;
3267
3268                 dprintk(3,
3269                         KERN_DEBUG "%s: VIDIOC_QBUF - type=%d, index=%d\n",
3270                         ZR_DEVNAME(zr), buf->type, buf->index);
3271
3272                 mutex_lock(&zr->resource_lock);
3273
3274                 switch (fh->map_mode) {
3275                 case ZORAN_MAP_MODE_RAW:
3276                         if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
3277                                 dprintk(1,
3278                                         KERN_ERR
3279                                         "%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
3280                                         ZR_DEVNAME(zr), buf->type, fh->map_mode);
3281                                 res = -EINVAL;
3282                                 goto qbuf_unlock_and_return;
3283                         }
3284
3285                         res = zoran_v4l_queue_frame(file, buf->index);
3286                         if (res)
3287                                 goto qbuf_unlock_and_return;
3288                         if (!zr->v4l_memgrab_active &&
3289                             fh->v4l_buffers.active == ZORAN_LOCKED)
3290                                 zr36057_set_memgrab(zr, 1);
3291                         break;
3292
3293                 case ZORAN_MAP_MODE_JPG_REC:
3294                 case ZORAN_MAP_MODE_JPG_PLAY:
3295                         if (fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY) {
3296                                 buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
3297                                 codec_mode = BUZ_MODE_MOTION_DECOMPRESS;
3298                         } else {
3299                                 buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
3300                                 codec_mode = BUZ_MODE_MOTION_COMPRESS;
3301                         }
3302
3303                         if (buf->type != buf_type) {
3304                                 dprintk(1,
3305                                         KERN_ERR
3306                                         "%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
3307                                         ZR_DEVNAME(zr), buf->type, fh->map_mode);
3308                                 res = -EINVAL;
3309                                 goto qbuf_unlock_and_return;
3310                         }
3311
3312                         res =
3313                             zoran_jpg_queue_frame(file, buf->index,
3314                                                   codec_mode);
3315                         if (res != 0)
3316                                 goto qbuf_unlock_and_return;
3317                         if (zr->codec_mode == BUZ_MODE_IDLE &&
3318                             fh->jpg_buffers.active == ZORAN_LOCKED) {
3319                                 zr36057_enable_jpg(zr, codec_mode);
3320                         }
3321                         break;
3322
3323                 default:
3324                         dprintk(1,
3325                                 KERN_ERR
3326                                 "%s: VIDIOC_QBUF - unsupported type %d\n",
3327                                 ZR_DEVNAME(zr), buf->type);
3328                         res = -EINVAL;
3329                         goto qbuf_unlock_and_return;
3330                 }
3331         qbuf_unlock_and_return:
3332                 mutex_unlock(&zr->resource_lock);
3333
3334                 return res;
3335         }
3336                 break;
3337
3338         case VIDIOC_DQBUF:
3339         {
3340                 struct v4l2_buffer *buf = arg;
3341                 int res = 0, buf_type, num = -1;        /* compiler borks here (?) */
3342
3343                 dprintk(3, KERN_DEBUG "%s: VIDIOC_DQBUF - type=%d\n",
3344                         ZR_DEVNAME(zr), buf->type);
3345
3346                 mutex_lock(&zr->resource_lock);
3347
3348                 switch (fh->map_mode) {
3349                 case ZORAN_MAP_MODE_RAW:
3350                         if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
3351                                 dprintk(1,
3352                                         KERN_ERR
3353                                         "%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
3354                                         ZR_DEVNAME(zr), buf->type, fh->map_mode);
3355                                 res = -EINVAL;
3356                                 goto dqbuf_unlock_and_return;
3357                         }
3358
3359                         num = zr->v4l_pend[zr->v4l_sync_tail & V4L_MASK_FRAME];
3360                         if (file->f_flags & O_NONBLOCK &&
3361                             zr->v4l_buffers.buffer[num].state !=
3362                             BUZ_STATE_DONE) {
3363                                 res = -EAGAIN;
3364                                 goto dqbuf_unlock_and_return;
3365                         }
3366                         res = v4l_sync(file, num);
3367                         if (res)
3368                                 goto dqbuf_unlock_and_return;
3369                         else
3370                                 zr->v4l_sync_tail++;
3371                         res = zoran_v4l2_buffer_status(file, buf, num);
3372                         break;
3373
3374                 case ZORAN_MAP_MODE_JPG_REC:
3375                 case ZORAN_MAP_MODE_JPG_PLAY:
3376                 {
3377                         struct zoran_sync bs;
3378
3379                         if (fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY)
3380                                 buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
3381                         else
3382                                 buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
3383
3384                         if (buf->type != buf_type) {
3385                                 dprintk(1,
3386                                         KERN_ERR
3387                                         "%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
3388                                         ZR_DEVNAME(zr), buf->type, fh->map_mode);
3389                                 res = -EINVAL;
3390                                 goto dqbuf_unlock_and_return;
3391                         }
3392
3393                         num =
3394                             zr->jpg_pend[zr->
3395                                          jpg_que_tail & BUZ_MASK_FRAME];
3396
3397                         if (file->f_flags & O_NONBLOCK &&
3398                             zr->jpg_buffers.buffer[num].state !=
3399                             BUZ_STATE_DONE) {
3400                                 res = -EAGAIN;
3401                                 goto dqbuf_unlock_and_return;
3402                         }
3403                         res = jpg_sync(file, &bs);
3404                         if (res)
3405                                 goto dqbuf_unlock_and_return;
3406                         res =
3407                             zoran_v4l2_buffer_status(file, buf, bs.frame);
3408                         break;
3409                 }
3410
3411                 default:
3412                         dprintk(1,
3413                                 KERN_ERR
3414                                 "%s: VIDIOC_DQBUF - unsupported type %d\n",
3415                                 ZR_DEVNAME(zr), buf->type);
3416                         res = -EINVAL;
3417                         goto dqbuf_unlock_and_return;
3418                 }
3419         dqbuf_unlock_and_return:
3420                 mutex_unlock(&zr->resource_lock);
3421
3422                 return res;
3423         }
3424                 break;
3425
3426         case VIDIOC_STREAMON:
3427         {
3428                 int res = 0;
3429
3430                 dprintk(3, KERN_DEBUG "%s: VIDIOC_STREAMON\n", ZR_DEVNAME(zr));
3431
3432                 mutex_lock(&zr->resource_lock);
3433
3434                 switch (fh->map_mode) {
3435                 case ZORAN_MAP_MODE_RAW:        /* raw capture */
3436                         if (zr->v4l_buffers.active != ZORAN_ACTIVE ||
3437                             fh->v4l_buffers.active != ZORAN_ACTIVE) {
3438                                 res = -EBUSY;
3439                                 goto strmon_unlock_and_return;
3440                         }
3441
3442                         zr->v4l_buffers.active = fh->v4l_buffers.active =
3443                             ZORAN_LOCKED;
3444                         zr->v4l_settings = fh->v4l_settings;
3445
3446                         zr->v4l_sync_tail = zr->v4l_pend_tail;
3447                         if (!zr->v4l_memgrab_active &&
3448                             zr->v4l_pend_head != zr->v4l_pend_tail) {
3449                                 zr36057_set_memgrab(zr, 1);
3450                         }
3451                         break;
3452
3453                 case ZORAN_MAP_MODE_JPG_REC:
3454                 case ZORAN_MAP_MODE_JPG_PLAY:
3455                         /* what is the codec mode right now? */
3456                         if (zr->jpg_buffers.active != ZORAN_ACTIVE ||
3457                             fh->jpg_buffers.active != ZORAN_ACTIVE) {
3458                                 res = -EBUSY;
3459                                 goto strmon_unlock_and_return;
3460                         }
3461
3462                         zr->jpg_buffers.active = fh->jpg_buffers.active =
3463                             ZORAN_LOCKED;
3464
3465                         if (zr->jpg_que_head != zr->jpg_que_tail) {
3466                                 /* Start the jpeg codec when the first frame is queued  */
3467                                 jpeg_start(zr);
3468                         }
3469
3470                         break;
3471                 default:
3472                         dprintk(1,
3473                                 KERN_ERR
3474                                 "%s: VIDIOC_STREAMON - invalid map mode %d\n",
3475                                 ZR_DEVNAME(zr), fh->map_mode);
3476                         res = -EINVAL;
3477                         goto strmon_unlock_and_return;
3478                 }
3479         strmon_unlock_and_return:
3480                 mutex_unlock(&zr->resource_lock);
3481
3482                 return res;
3483         }
3484                 break;
3485
3486         case VIDIOC_STREAMOFF:
3487         {
3488                 int i, res = 0;
3489
3490                 dprintk(3, KERN_DEBUG "%s: VIDIOC_STREAMOFF\n", ZR_DEVNAME(zr));
3491
3492                 mutex_lock(&zr->resource_lock);
3493
3494                 switch (fh->map_mode) {
3495                 case ZORAN_MAP_MODE_RAW:        /* raw capture */
3496                         if (fh->v4l_buffers.active == ZORAN_FREE &&
3497                             zr->v4l_buffers.active != ZORAN_FREE) {
3498                                 res = -EPERM;   /* stay off other's settings! */
3499                                 goto strmoff_unlock_and_return;
3500                         }
3501                         if (zr->v4l_buffers.active == ZORAN_FREE)
3502                                 goto strmoff_unlock_and_return;
3503
3504                         /* unload capture */
3505                         if (zr->v4l_memgrab_active)
3506                                 zr36057_set_memgrab(zr, 0);
3507
3508                         for (i = 0; i < fh->v4l_buffers.num_buffers; i++)
3509                                 zr->v4l_buffers.buffer[i].state =
3510                                     BUZ_STATE_USER;
3511                         fh->v4l_buffers = zr->v4l_buffers;
3512
3513                         zr->v4l_buffers.active = fh->v4l_buffers.active =
3514                             ZORAN_FREE;
3515
3516                         zr->v4l_grab_seq = 0;
3517                         zr->v4l_pend_head = zr->v4l_pend_tail = 0;
3518                         zr->v4l_sync_tail = 0;
3519
3520                         break;
3521
3522                 case ZORAN_MAP_MODE_JPG_REC:
3523                 case ZORAN_MAP_MODE_JPG_PLAY:
3524                         if (fh->jpg_buffers.active == ZORAN_FREE &&
3525                             zr->jpg_buffers.active != ZORAN_FREE) {
3526                                 res = -EPERM;   /* stay off other's settings! */
3527                                 goto strmoff_unlock_and_return;
3528                         }
3529                         if (zr->jpg_buffers.active == ZORAN_FREE)
3530                                 goto strmoff_unlock_and_return;
3531
3532                         res =
3533                             jpg_qbuf(file, -1,
3534                                      (fh->map_mode ==
3535                                       ZORAN_MAP_MODE_JPG_REC) ?
3536                                      BUZ_MODE_MOTION_COMPRESS :
3537                                      BUZ_MODE_MOTION_DECOMPRESS);
3538                         if (res)
3539                                 goto strmoff_unlock_and_return;
3540                         break;
3541                 default:
3542                         dprintk(1,
3543                                 KERN_ERR
3544                                 "%s: VIDIOC_STREAMOFF - invalid map mode %d\n",
3545                                 ZR_DEVNAME(zr), fh->map_mode);
3546                         res = -EINVAL;
3547                         goto strmoff_unlock_and_return;
3548                 }
3549         strmoff_unlock_and_return:
3550                 mutex_unlock(&zr->resource_lock);
3551
3552                 return res;
3553         }
3554                 break;
3555
3556         case VIDIOC_QUERYCTRL:
3557         {
3558                 struct v4l2_queryctrl *ctrl = arg;
3559
3560                 dprintk(3, KERN_DEBUG "%s: VIDIOC_QUERYCTRL - id=%d\n",
3561                         ZR_DEVNAME(zr), ctrl->id);
3562
3563                 /* we only support hue/saturation/contrast/brightness */
3564                 if (ctrl->id < V4L2_CID_BRIGHTNESS ||
3565                     ctrl->id > V4L2_CID_HUE)
3566                         return -EINVAL;
3567                 else {
3568                         int id = ctrl->id;
3569                         memset(ctrl, 0, sizeof(*ctrl));
3570                         ctrl->id = id;
3571                 }
3572
3573                 switch (ctrl->id) {
3574                 case V4L2_CID_BRIGHTNESS:
3575                         strncpy(ctrl->name, "Brightness", sizeof(ctrl->name)-1);
3576                         break;
3577                 case V4L2_CID_CONTRAST:
3578                         strncpy(ctrl->name, "Contrast", sizeof(ctrl->name)-1);
3579                         break;
3580                 case V4L2_CID_SATURATION:
3581                         strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)-1);
3582                         break;
3583                 case V4L2_CID_HUE:
3584                         strncpy(ctrl->name, "Hue", sizeof(ctrl->name)-1);
3585                         break;
3586                 }
3587
3588                 ctrl->minimum = 0;
3589                 ctrl->maximum = 65535;
3590                 ctrl->step = 1;
3591                 ctrl->default_value = 32768;
3592                 ctrl->type = V4L2_CTRL_TYPE_INTEGER;
3593
3594                 return 0;
3595         }
3596                 break;
3597
3598         case VIDIOC_G_CTRL:
3599         {
3600                 struct v4l2_control *ctrl = arg;
3601
3602                 dprintk(3, KERN_DEBUG "%s: VIDIOC_G_CTRL - id=%d\n",
3603                         ZR_DEVNAME(zr), ctrl->id);
3604
3605                 /* we only support hue/saturation/contrast/brightness */
3606                 if (ctrl->id < V4L2_CID_BRIGHTNESS ||
3607                     ctrl->id > V4L2_CID_HUE)
3608                         return -EINVAL;
3609
3610                 mutex_lock(&zr->resource_lock);
3611                 switch (ctrl->id) {
3612                 case V4L2_CID_BRIGHTNESS:
3613                         ctrl->value = zr->brightness;
3614                         break;
3615                 case V4L2_CID_CONTRAST:
3616                         ctrl->value = zr->contrast;
3617                         break;
3618                 case V4L2_CID_SATURATION:
3619                         ctrl->value = zr->saturation;
3620                         break;
3621                 case V4L2_CID_HUE:
3622                         ctrl->value = zr->hue;
3623                         break;
3624                 }
3625                 mutex_unlock(&zr->resource_lock);
3626
3627                 return 0;
3628         }
3629                 break;
3630
3631         case VIDIOC_S_CTRL:
3632         {
3633                 struct v4l2_control *ctrl = arg;
3634                 struct video_picture pict;
3635
3636                 dprintk(3, KERN_DEBUG "%s: VIDIOC_S_CTRL - id=%d\n",
3637                         ZR_DEVNAME(zr), ctrl->id);
3638
3639                 /* we only support hue/saturation/contrast/brightness */
3640                 if (ctrl->id < V4L2_CID_BRIGHTNESS ||
3641                     ctrl->id > V4L2_CID_HUE)
3642                         return -EINVAL;
3643
3644                 if (ctrl->value < 0 || ctrl->value > 65535) {
3645                         dprintk(1,
3646                                 KERN_ERR
3647                                 "%s: VIDIOC_S_CTRL - invalid value %d for id=%d\n",
3648                                 ZR_DEVNAME(zr), ctrl->value, ctrl->id);
3649                         return -EINVAL;
3650                 }
3651
3652                 mutex_lock(&zr->resource_lock);
3653                 switch (ctrl->id) {
3654                 case V4L2_CID_BRIGHTNESS:
3655                         zr->brightness = ctrl->value;
3656                         break;
3657                 case V4L2_CID_CONTRAST:
3658                         zr->contrast = ctrl->value;
3659                         break;
3660                 case V4L2_CID_SATURATION:
3661                         zr->saturation = ctrl->value;
3662                         break;
3663                 case V4L2_CID_HUE:
3664                         zr->hue = ctrl->value;
3665                         break;
3666                 }
3667                 pict.brightness = zr->brightness;
3668                 pict.contrast = zr->contrast;
3669                 pict.colour = zr->saturation;
3670                 pict.hue = zr->hue;
3671
3672                 decoder_command(zr, DECODER_SET_PICTURE, &pict);
3673
3674                 mutex_unlock(&zr->resource_lock);
3675
3676                 return 0;
3677         }
3678                 break;
3679
3680         case VIDIOC_ENUMSTD:
3681         {
3682                 struct v4l2_standard *std = arg;
3683
3684                 dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUMSTD - index=%d\n",
3685                         ZR_DEVNAME(zr), std->index);
3686
3687                 if (std->index < 0 || std->index >= (zr->card.norms + 1))
3688                         return -EINVAL;
3689                 else {
3690                         int id = std->index;
3691                         memset(std, 0, sizeof(*std));
3692                         std->index = id;
3693                 }
3694
3695                 if (std->index == zr->card.norms) {
3696                         /* if we have autodetect, ... */
3697                         struct video_decoder_capability caps;
3698                         decoder_command(zr, DECODER_GET_CAPABILITIES,
3699                                         &caps);
3700                         if (caps.flags & VIDEO_DECODER_AUTO) {
3701                                 std->id = V4L2_STD_ALL;
3702                                 strncpy(std->name, "Autodetect", sizeof(std->name)-1);
3703                                 return 0;
3704                         } else
3705                                 return -EINVAL;
3706                 }
3707                 switch (std->index) {
3708                 case 0:
3709                         std->id = V4L2_STD_PAL;
3710                         strncpy(std->name, "PAL", sizeof(std->name)-1);
3711                         std->frameperiod.numerator = 1;
3712                         std->frameperiod.denominator = 25;
3713                         std->framelines = zr->card.tvn[0]->Ht;
3714                         break;
3715                 case 1:
3716                         std->id = V4L2_STD_NTSC;
3717                         strncpy(std->name, "NTSC", sizeof(std->name)-1);
3718                         std->frameperiod.numerator = 1001;
3719                         std->frameperiod.denominator = 30000;
3720                         std->framelines = zr->card.tvn[1]->Ht;
3721                         break;
3722                 case 2:
3723                         std->id = V4L2_STD_SECAM;
3724                         strncpy(std->name, "SECAM", sizeof(std->name)-1);
3725                         std->frameperiod.numerator = 1;
3726                         std->frameperiod.denominator = 25;
3727                         std->framelines = zr->card.tvn[2]->Ht;
3728                         break;
3729                 }
3730
3731                 return 0;
3732         }
3733                 break;
3734
3735         case VIDIOC_G_STD:
3736         {
3737                 v4l2_std_id *std = arg;
3738                 int norm;
3739
3740                 dprintk(3, KERN_DEBUG "%s: VIDIOC_G_STD\n", ZR_DEVNAME(zr));
3741
3742                 mutex_lock(&zr->resource_lock);
3743                 norm = zr->norm;
3744                 mutex_unlock(&zr->resource_lock);
3745
3746                 switch (norm) {
3747                 case VIDEO_MODE_PAL:
3748                         *std = V4L2_STD_PAL;
3749                         break;
3750                 case VIDEO_MODE_NTSC:
3751                         *std = V4L2_STD_NTSC;
3752                         break;
3753                 case VIDEO_MODE_SECAM:
3754                         *std = V4L2_STD_SECAM;
3755                         break;
3756                 }
3757
3758                 return 0;
3759         }
3760                 break;
3761
3762         case VIDIOC_S_STD:
3763         {
3764                 int norm = -1, res = 0;
3765                 v4l2_std_id *std = arg;
3766
3767                 dprintk(3, KERN_DEBUG "%s: VIDIOC_S_STD - norm=0x%llx\n",
3768                         ZR_DEVNAME(zr), (unsigned long long)*std);
3769
3770                 if (*std == V4L2_STD_PAL)
3771                         norm = VIDEO_MODE_PAL;
3772                 else if (*std == V4L2_STD_NTSC)
3773                         norm = VIDEO_MODE_NTSC;
3774                 else if (*std == V4L2_STD_SECAM)
3775                         norm = VIDEO_MODE_SECAM;
3776                 else if (*std == V4L2_STD_ALL)
3777                         norm = VIDEO_MODE_AUTO;
3778                 else {
3779                         dprintk(1,
3780                                 KERN_ERR
3781                                 "%s: VIDIOC_S_STD - invalid norm 0x%llx\n",
3782                                 ZR_DEVNAME(zr), (unsigned long long)*std);
3783                         return -EINVAL;
3784                 }
3785
3786                 mutex_lock(&zr->resource_lock);
3787                 if ((res = zoran_set_norm(zr, norm)))
3788                         goto sstd_unlock_and_return;
3789
3790                 res = wait_grab_pending(zr);
3791         sstd_unlock_and_return:
3792                 mutex_unlock(&zr->resource_lock);
3793                 return res;
3794         }
3795                 break;
3796
3797         case VIDIOC_ENUMINPUT:
3798         {
3799                 struct v4l2_input *inp = arg;
3800                 int status;
3801
3802                 dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUMINPUT - index=%d\n",
3803                         ZR_DEVNAME(zr), inp->index);
3804
3805                 if (inp->index < 0 || inp->index >= zr->card.inputs)
3806                         return -EINVAL;
3807                 else {
3808                         int id = inp->index;
3809                         memset(inp, 0, sizeof(*inp));
3810                         inp->index = id;
3811                 }
3812
3813                 strncpy(inp->name, zr->card.input[inp->index].name,
3814                         sizeof(inp->name) - 1);
3815                 inp->type = V4L2_INPUT_TYPE_CAMERA;
3816                 inp->std = V4L2_STD_ALL;
3817
3818                 /* Get status of video decoder */
3819                 mutex_lock(&zr->resource_lock);
3820                 decoder_command(zr, DECODER_GET_STATUS, &status);
3821                 mutex_unlock(&zr->resource_lock);
3822
3823                 if (!(status & DECODER_STATUS_GOOD)) {
3824                         inp->status |= V4L2_IN_ST_NO_POWER;
3825                         inp->status |= V4L2_IN_ST_NO_SIGNAL;
3826                 }
3827                 if (!(status & DECODER_STATUS_COLOR))
3828                         inp->status |= V4L2_IN_ST_NO_COLOR;
3829
3830                 return 0;
3831         }
3832                 break;
3833
3834         case VIDIOC_G_INPUT:
3835         {
3836                 int *input = arg;
3837
3838                 dprintk(3, KERN_DEBUG "%s: VIDIOC_G_INPUT\n", ZR_DEVNAME(zr));
3839
3840                 mutex_lock(&zr->resource_lock);
3841                 *input = zr->input;
3842                 mutex_unlock(&zr->resource_lock);
3843
3844                 return 0;
3845         }
3846                 break;
3847
3848         case VIDIOC_S_INPUT:
3849         {
3850                 int *input = arg, res = 0;
3851
3852                 dprintk(3, KERN_DEBUG "%s: VIDIOC_S_INPUT - input=%d\n",
3853                         ZR_DEVNAME(zr), *input);
3854
3855                 mutex_lock(&zr->resource_lock);
3856                 if ((res = zoran_set_input(zr, *input)))
3857                         goto sinput_unlock_and_return;
3858
3859                 /* Make sure the changes come into effect */
3860                 res = wait_grab_pending(zr);
3861         sinput_unlock_and_return:
3862                 mutex_unlock(&zr->resource_lock);
3863                 return res;
3864         }
3865                 break;
3866
3867         case VIDIOC_ENUMOUTPUT:
3868         {
3869                 struct v4l2_output *outp = arg;
3870
3871                 dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUMOUTPUT - index=%d\n",
3872                         ZR_DEVNAME(zr), outp->index);
3873
3874                 if (outp->index != 0)
3875                         return -EINVAL;
3876
3877                 memset(outp, 0, sizeof(*outp));
3878                 outp->index = 0;
3879                 outp->type = V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY;
3880                 strncpy(outp->name, "Autodetect", sizeof(outp->name)-1);
3881
3882                 return 0;
3883         }
3884                 break;
3885
3886         case VIDIOC_G_OUTPUT:
3887         {
3888                 int *output = arg;
3889
3890                 dprintk(3, KERN_DEBUG "%s: VIDIOC_G_OUTPUT\n", ZR_DEVNAME(zr));
3891
3892                 *output = 0;
3893
3894                 return 0;
3895         }
3896                 break;
3897
3898         case VIDIOC_S_OUTPUT:
3899         {
3900                 int *output = arg;
3901
3902                 dprintk(3, KERN_DEBUG "%s: VIDIOC_S_OUTPUT - output=%d\n",
3903                         ZR_DEVNAME(zr), *output);
3904
3905                 if (*output != 0)
3906                         return -EINVAL;
3907
3908                 return 0;
3909         }
3910                 break;
3911
3912                 /* cropping (sub-frame capture) */
3913         case VIDIOC_CROPCAP:
3914         {
3915                 struct v4l2_cropcap *cropcap = arg;
3916                 int type = cropcap->type, res = 0;
3917
3918                 dprintk(3, KERN_ERR "%s: VIDIOC_CROPCAP - type=%d\n",
3919                         ZR_DEVNAME(zr), cropcap->type);
3920
3921                 memset(cropcap, 0, sizeof(*cropcap));
3922                 cropcap->type = type;
3923
3924                 mutex_lock(&zr->resource_lock);
3925
3926                 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
3927                     (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
3928                      fh->map_mode == ZORAN_MAP_MODE_RAW)) {
3929                         dprintk(1,
3930                                 KERN_ERR
3931                                 "%s: VIDIOC_CROPCAP - subcapture only supported for compressed capture\n",
3932                                 ZR_DEVNAME(zr));
3933                         res = -EINVAL;
3934                         goto cropcap_unlock_and_return;
3935                 }
3936
3937                 cropcap->bounds.top = cropcap->bounds.left = 0;
3938                 cropcap->bounds.width = BUZ_MAX_WIDTH;
3939                 cropcap->bounds.height = BUZ_MAX_HEIGHT;
3940                 cropcap->defrect.top = cropcap->defrect.left = 0;
3941                 cropcap->defrect.width = BUZ_MIN_WIDTH;
3942                 cropcap->defrect.height = BUZ_MIN_HEIGHT;
3943         cropcap_unlock_and_return:
3944                 mutex_unlock(&zr->resource_lock);
3945                 return res;
3946         }
3947                 break;
3948
3949         case VIDIOC_G_CROP:
3950         {
3951                 struct v4l2_crop *crop = arg;
3952                 int type = crop->type, res = 0;
3953
3954                 dprintk(3, KERN_ERR "%s: VIDIOC_G_CROP - type=%d\n",
3955                         ZR_DEVNAME(zr), crop->type);
3956
3957                 memset(crop, 0, sizeof(*crop));
3958                 crop->type = type;
3959
3960                 mutex_lock(&zr->resource_lock);
3961
3962                 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
3963                     (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
3964                      fh->map_mode == ZORAN_MAP_MODE_RAW)) {
3965                         dprintk(1,
3966                                 KERN_ERR
3967                                 "%s: VIDIOC_G_CROP - subcapture only supported for compressed capture\n",
3968                                 ZR_DEVNAME(zr));
3969                         res = -EINVAL;
3970                         goto gcrop_unlock_and_return;
3971                 }
3972
3973                 crop->c.top = fh->jpg_settings.img_y;
3974                 crop->c.left = fh->jpg_settings.img_x;
3975                 crop->c.width = fh->jpg_settings.img_width;
3976                 crop->c.height = fh->jpg_settings.img_height;
3977
3978         gcrop_unlock_and_return:
3979                 mutex_unlock(&zr->resource_lock);
3980
3981                 return res;
3982         }
3983                 break;
3984
3985         case VIDIOC_S_CROP:
3986         {
3987                 struct v4l2_crop *crop = arg;
3988                 int res = 0;
3989
3990                 settings = fh->jpg_settings;
3991
3992                 dprintk(3,
3993                         KERN_ERR
3994                         "%s: VIDIOC_S_CROP - type=%d, x=%d,y=%d,w=%d,h=%d\n",
3995                         ZR_DEVNAME(zr), crop->type, crop->c.left, crop->c.top,
3996                         crop->c.width, crop->c.height);
3997
3998                 mutex_lock(&zr->resource_lock);
3999
4000                 if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
4001                         dprintk(1,
4002                                 KERN_ERR
4003                                 "%s: VIDIOC_S_CROP - cannot change settings while active\n",
4004                                 ZR_DEVNAME(zr));
4005                         res = -EBUSY;
4006                         goto scrop_unlock_and_return;
4007                 }
4008
4009                 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
4010                     (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
4011                      fh->map_mode == ZORAN_MAP_MODE_RAW)) {
4012                         dprintk(1,
4013                                 KERN_ERR
4014                                 "%s: VIDIOC_G_CROP - subcapture only supported for compressed capture\n",
4015                                 ZR_DEVNAME(zr));
4016                         res = -EINVAL;
4017                         goto scrop_unlock_and_return;
4018                 }
4019
4020                 /* move into a form that we understand */
4021                 settings.img_x = crop->c.left;
4022                 settings.img_y = crop->c.top;
4023                 settings.img_width = crop->c.width;
4024                 settings.img_height = crop->c.height;
4025
4026                 /* check validity */
4027                 if ((res = zoran_check_jpg_settings(zr, &settings)))
4028                         goto scrop_unlock_and_return;
4029
4030                 /* accept */
4031                 fh->jpg_settings = settings;
4032
4033         scrop_unlock_and_return:
4034                 mutex_unlock(&zr->resource_lock);
4035                 return res;
4036         }
4037                 break;
4038
4039         case VIDIOC_G_JPEGCOMP:
4040         {
4041                 struct v4l2_jpegcompression *params = arg;
4042
4043                 dprintk(3, KERN_DEBUG "%s: VIDIOC_G_JPEGCOMP\n",
4044                         ZR_DEVNAME(zr));
4045
4046                 memset(params, 0, sizeof(*params));
4047
4048                 mutex_lock(&zr->resource_lock);
4049
4050                 params->quality = fh->jpg_settings.jpg_comp.quality;
4051                 params->APPn = fh->jpg_settings.jpg_comp.APPn;
4052                 memcpy(params->APP_data,
4053                        fh->jpg_settings.jpg_comp.APP_data,
4054                        fh->jpg_settings.jpg_comp.APP_len);
4055                 params->APP_len = fh->jpg_settings.jpg_comp.APP_len;
4056                 memcpy(params->COM_data,
4057                        fh->jpg_settings.jpg_comp.COM_data,
4058                        fh->jpg_settings.jpg_comp.COM_len);
4059                 params->COM_len = fh->jpg_settings.jpg_comp.COM_len;
4060                 params->jpeg_markers =
4061                     fh->jpg_settings.jpg_comp.jpeg_markers;
4062
4063                 mutex_unlock(&zr->resource_lock);
4064
4065                 return 0;
4066         }
4067                 break;
4068
4069         case VIDIOC_S_JPEGCOMP:
4070         {
4071                 struct v4l2_jpegcompression *params = arg;
4072                 int res = 0;
4073
4074                 settings = fh->jpg_settings;
4075
4076                 dprintk(3,
4077                         KERN_DEBUG
4078                         "%s: VIDIOC_S_JPEGCOMP - quality=%d, APPN=%d, APP_len=%d, COM_len=%d\n",
4079                         ZR_DEVNAME(zr), params->quality, params->APPn,
4080                         params->APP_len, params->COM_len);
4081
4082                 settings.jpg_comp = *params;
4083
4084                 mutex_lock(&zr->resource_lock);
4085
4086                 if (fh->v4l_buffers.active != ZORAN_FREE ||
4087                     fh->jpg_buffers.active != ZORAN_FREE) {
4088                         dprintk(1,
4089                                 KERN_WARNING
4090                                 "%s: VIDIOC_S_JPEGCOMP called while in playback/capture mode\n",
4091                                 ZR_DEVNAME(zr));
4092                         res = -EBUSY;
4093                         goto sjpegc_unlock_and_return;
4094                 }
4095
4096                 if ((res = zoran_check_jpg_settings(zr, &settings)))
4097                         goto sjpegc_unlock_and_return;
4098                 if (!fh->jpg_buffers.allocated)
4099                         fh->jpg_buffers.buffer_size =
4100                             zoran_v4l2_calc_bufsize(&fh->jpg_settings);
4101                 fh->jpg_settings.jpg_comp = *params = settings.jpg_comp;
4102         sjpegc_unlock_and_return:
4103                 mutex_unlock(&zr->resource_lock);
4104
4105                 return 0;
4106         }
4107                 break;
4108
4109         case VIDIOC_QUERYSTD:   /* why is this useful? */
4110         {
4111                 v4l2_std_id *std = arg;
4112
4113                 dprintk(3,
4114                         KERN_DEBUG "%s: VIDIOC_QUERY_STD - std=0x%llx\n",
4115                         ZR_DEVNAME(zr), (unsigned long long)*std);
4116
4117                 if (*std == V4L2_STD_ALL || *std == V4L2_STD_NTSC ||
4118                     *std == V4L2_STD_PAL || (*std == V4L2_STD_SECAM &&
4119                                              zr->card.norms == 3)) {
4120                         return 0;
4121                 }
4122
4123                 return -EINVAL;
4124         }
4125                 break;
4126
4127         case VIDIOC_TRY_FMT:
4128         {
4129                 struct v4l2_format *fmt = arg;
4130                 int res = 0;
4131
4132                 dprintk(3, KERN_DEBUG "%s: VIDIOC_TRY_FMT - type=%d\n",
4133                         ZR_DEVNAME(zr), fmt->type);
4134
4135                 switch (fmt->type) {
4136                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4137                         mutex_lock(&zr->resource_lock);
4138
4139                         if (fmt->fmt.win.w.width > BUZ_MAX_WIDTH)
4140                                 fmt->fmt.win.w.width = BUZ_MAX_WIDTH;
4141                         if (fmt->fmt.win.w.width < BUZ_MIN_WIDTH)
4142                                 fmt->fmt.win.w.width = BUZ_MIN_WIDTH;
4143                         if (fmt->fmt.win.w.height > BUZ_MAX_HEIGHT)
4144                                 fmt->fmt.win.w.height = BUZ_MAX_HEIGHT;
4145                         if (fmt->fmt.win.w.height < BUZ_MIN_HEIGHT)
4146                                 fmt->fmt.win.w.height = BUZ_MIN_HEIGHT;
4147
4148                         mutex_unlock(&zr->resource_lock);
4149                         break;
4150
4151                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4152                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4153                         if (fmt->fmt.pix.bytesperline > 0)
4154                                 return -EINVAL;
4155
4156                         mutex_lock(&zr->resource_lock);
4157
4158                         if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG) {
4159                                 settings = fh->jpg_settings;
4160
4161                                 /* we actually need to set 'real' parameters now */
4162                                 if ((fmt->fmt.pix.height * 2) >
4163                                     BUZ_MAX_HEIGHT)
4164                                         settings.TmpDcm = 1;
4165                                 else
4166                                         settings.TmpDcm = 2;
4167                                 settings.decimation = 0;
4168                                 if (fmt->fmt.pix.height <=
4169                                     fh->jpg_settings.img_height / 2)
4170                                         settings.VerDcm = 2;
4171                                 else
4172                                         settings.VerDcm = 1;
4173                                 if (fmt->fmt.pix.width <=
4174                                     fh->jpg_settings.img_width / 4)
4175                                         settings.HorDcm = 4;
4176                                 else if (fmt->fmt.pix.width <=
4177                                          fh->jpg_settings.img_width / 2)
4178                                         settings.HorDcm = 2;
4179                                 else
4180                                         settings.HorDcm = 1;
4181                                 if (settings.TmpDcm == 1)
4182                                         settings.field_per_buff = 2;
4183                                 else
4184                                         settings.field_per_buff = 1;
4185
4186                                 /* check */
4187                                 if ((res =
4188                                      zoran_check_jpg_settings(zr,
4189                                                               &settings)))
4190                                         goto tryfmt_unlock_and_return;
4191
4192                                 /* tell the user what we actually did */
4193                                 fmt->fmt.pix.width =
4194                                     settings.img_width / settings.HorDcm;
4195                                 fmt->fmt.pix.height =
4196                                     settings.img_height * 2 /
4197                                     (settings.TmpDcm * settings.VerDcm);
4198                                 if (settings.TmpDcm == 1)
4199                                         fmt->fmt.pix.field =
4200                                             (fh->jpg_settings.
4201                                              odd_even ? V4L2_FIELD_SEQ_TB :
4202                                              V4L2_FIELD_SEQ_BT);
4203                                 else
4204                                         fmt->fmt.pix.field =
4205                                             (fh->jpg_settings.
4206                                              odd_even ? V4L2_FIELD_TOP :
4207                                              V4L2_FIELD_BOTTOM);
4208
4209                                 fmt->fmt.pix.sizeimage =
4210                                     zoran_v4l2_calc_bufsize(&settings);
4211                         } else if (fmt->type ==
4212                                    V4L2_BUF_TYPE_VIDEO_CAPTURE) {
4213                                 int i;
4214
4215                                 for (i = 0; i < zoran_num_formats; i++)
4216                                         if (zoran_formats[i].fourcc ==
4217                                             fmt->fmt.pix.pixelformat)
4218                                                 break;
4219                                 if (i == zoran_num_formats) {
4220                                         res = -EINVAL;
4221                                         goto tryfmt_unlock_and_return;
4222                                 }
4223
4224                                 if (fmt->fmt.pix.width > BUZ_MAX_WIDTH)
4225                                         fmt->fmt.pix.width = BUZ_MAX_WIDTH;
4226                                 if (fmt->fmt.pix.width < BUZ_MIN_WIDTH)
4227                                         fmt->fmt.pix.width = BUZ_MIN_WIDTH;
4228                                 if (fmt->fmt.pix.height > BUZ_MAX_HEIGHT)
4229                                         fmt->fmt.pix.height =
4230                                             BUZ_MAX_HEIGHT;
4231                                 if (fmt->fmt.pix.height < BUZ_MIN_HEIGHT)
4232                                         fmt->fmt.pix.height =
4233                                             BUZ_MIN_HEIGHT;
4234                         } else {
4235                                 res = -EINVAL;
4236                                 goto tryfmt_unlock_and_return;
4237                         }
4238                 tryfmt_unlock_and_return:
4239                         mutex_unlock(&zr->resource_lock);
4240
4241                         return res;
4242                         break;
4243
4244                 default:
4245                         return -EINVAL;
4246                 }
4247
4248                 return 0;
4249         }
4250                 break;
4251 #endif
4252
4253         default:
4254                 dprintk(1, KERN_DEBUG "%s: UNKNOWN ioctl cmd: 0x%x\n",
4255                         ZR_DEVNAME(zr), cmd);
4256                 return -ENOIOCTLCMD;
4257                 break;
4258
4259         }
4260         return 0;
4261 }
4262
4263
4264 static int
4265 zoran_ioctl (struct inode *inode,
4266              struct file  *file,
4267              unsigned int  cmd,
4268              unsigned long arg)
4269 {
4270         return video_usercopy(inode, file, cmd, arg, zoran_do_ioctl);
4271 }
4272
4273 static unsigned int
4274 zoran_poll (struct file *file,
4275             poll_table  *wait)
4276 {
4277         struct zoran_fh *fh = file->private_data;
4278         struct zoran *zr = fh->zr;
4279         wait_queue_head_t *queue = NULL;
4280         int res = 0, frame;
4281
4282         /* we should check whether buffers are ready to be synced on
4283          * (w/o waits - O_NONBLOCK) here
4284          * if ready for read (sync), return POLLIN|POLLRDNORM,
4285          * if ready for write (sync), return POLLOUT|POLLWRNORM,
4286          * if error, return POLLERR,
4287          * if no buffers queued or so, return POLLNVAL
4288          */
4289
4290         mutex_lock(&zr->resource_lock);
4291
4292         switch (fh->map_mode) {
4293         case ZORAN_MAP_MODE_RAW:
4294                 if (fh->v4l_buffers.active == ZORAN_FREE ||
4295                     zr->v4l_pend_head == zr->v4l_pend_tail) {
4296                         dprintk(1,
4297                                 "%s: zoran_poll() - no buffers queued\n",
4298                                 ZR_DEVNAME(zr));
4299                         res = POLLNVAL;
4300                         goto poll_unlock_and_return;
4301                 }
4302                 queue = &zr->v4l_capq;
4303                 frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
4304                 poll_wait(file, queue, wait);
4305                 if (fh->v4l_buffers.buffer[frame].state == BUZ_STATE_DONE)
4306                         res = POLLIN | POLLRDNORM;
4307                 break;
4308
4309         case ZORAN_MAP_MODE_JPG_REC:
4310         case ZORAN_MAP_MODE_JPG_PLAY:
4311                 if (fh->jpg_buffers.active == ZORAN_FREE ||
4312                     zr->jpg_que_head == zr->jpg_que_tail) {
4313                         dprintk(1,
4314                                 "%s: zoran_poll() - no buffers queued\n",
4315                                 ZR_DEVNAME(zr));
4316                         res = POLLNVAL;
4317                         goto poll_unlock_and_return;
4318                 }
4319                 queue = &zr->jpg_capq;
4320                 frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];
4321                 poll_wait(file, queue, wait);
4322                 if (fh->jpg_buffers.buffer[frame].state == BUZ_STATE_DONE) {
4323                         if (fh->map_mode == ZORAN_MAP_MODE_JPG_REC)
4324                                 res = POLLIN | POLLRDNORM;
4325                         else
4326                                 res = POLLOUT | POLLWRNORM;
4327                 }
4328                 break;
4329
4330         default:
4331                 dprintk(1,
4332                         "%s: zoran_poll() - internal error, unknown map_mode=%d\n",
4333                         ZR_DEVNAME(zr), fh->map_mode);
4334                 res = POLLNVAL;
4335                 goto poll_unlock_and_return;
4336         }
4337
4338 poll_unlock_and_return:
4339         mutex_unlock(&zr->resource_lock);
4340
4341         return res;
4342 }
4343
4344
4345 /*
4346  * This maps the buffers to user space.
4347  *
4348  * Depending on the state of fh->map_mode
4349  * the V4L or the MJPEG buffers are mapped
4350  * per buffer or all together
4351  *
4352  * Note that we need to connect to some
4353  * unmap signal event to unmap the de-allocate
4354  * the buffer accordingly (zoran_vm_close())
4355  */
4356
4357 static void
4358 zoran_vm_open (struct vm_area_struct *vma)
4359 {
4360         struct zoran_mapping *map = vma->vm_private_data;
4361
4362         map->count++;
4363 }
4364
4365 static void
4366 zoran_vm_close (struct vm_area_struct *vma)
4367 {
4368         struct zoran_mapping *map = vma->vm_private_data;
4369         struct file *file = map->file;
4370         struct zoran_fh *fh = file->private_data;
4371         struct zoran *zr = fh->zr;
4372         int i;
4373
4374         map->count--;
4375         if (map->count == 0) {
4376                 switch (fh->map_mode) {
4377                 case ZORAN_MAP_MODE_JPG_REC:
4378                 case ZORAN_MAP_MODE_JPG_PLAY:
4379
4380                         dprintk(3, KERN_INFO "%s: munmap(MJPEG)\n",
4381                                 ZR_DEVNAME(zr));
4382
4383                         for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
4384                                 if (fh->jpg_buffers.buffer[i].map == map) {
4385                                         fh->jpg_buffers.buffer[i].map =
4386                                             NULL;
4387                                 }
4388                         }
4389                         kfree(map);
4390
4391                         for (i = 0; i < fh->jpg_buffers.num_buffers; i++)
4392                                 if (fh->jpg_buffers.buffer[i].map)
4393                                         break;
4394                         if (i == fh->jpg_buffers.num_buffers) {
4395                                 mutex_lock(&zr->resource_lock);
4396
4397                                 if (fh->jpg_buffers.active != ZORAN_FREE) {
4398                                         jpg_qbuf(file, -1, zr->codec_mode);
4399                                         zr->jpg_buffers.allocated = 0;
4400                                         zr->jpg_buffers.active =
4401                                             fh->jpg_buffers.active =
4402                                             ZORAN_FREE;
4403                                 }
4404                                 //jpg_fbuffer_free(file);
4405                                 fh->jpg_buffers.allocated = 0;
4406                                 fh->jpg_buffers.ready_to_be_freed = 1;
4407
4408                                 mutex_unlock(&zr->resource_lock);
4409                         }
4410
4411                         break;
4412
4413                 case ZORAN_MAP_MODE_RAW:
4414
4415                         dprintk(3, KERN_INFO "%s: munmap(V4L)\n",
4416                                 ZR_DEVNAME(zr));
4417
4418                         for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
4419                                 if (fh->v4l_buffers.buffer[i].map == map) {
4420                                         /* unqueue/unmap */
4421                                         fh->v4l_buffers.buffer[i].map =
4422                                             NULL;
4423                                 }
4424                         }
4425                         kfree(map);
4426
4427                         for (i = 0; i < fh->v4l_buffers.num_buffers; i++)
4428                                 if (fh->v4l_buffers.buffer[i].map)
4429                                         break;
4430                         if (i == fh->v4l_buffers.num_buffers) {
4431                                 mutex_lock(&zr->resource_lock);
4432
4433                                 if (fh->v4l_buffers.active != ZORAN_FREE) {
4434                                         zr36057_set_memgrab(zr, 0);
4435                                         zr->v4l_buffers.allocated = 0;
4436                                         zr->v4l_buffers.active =
4437                                             fh->v4l_buffers.active =
4438                                             ZORAN_FREE;
4439                                 }
4440                                 //v4l_fbuffer_free(file);
4441                                 fh->v4l_buffers.allocated = 0;
4442                                 fh->v4l_buffers.ready_to_be_freed = 1;
4443
4444                                 mutex_unlock(&zr->resource_lock);
4445                         }
4446
4447                         break;
4448
4449                 default:
4450                         printk(KERN_ERR
4451                                "%s: munmap() - internal error - unknown map mode %d\n",
4452                                ZR_DEVNAME(zr), fh->map_mode);
4453                         break;
4454
4455                 }
4456         }
4457 }
4458
4459 static struct vm_operations_struct zoran_vm_ops = {
4460         .open = zoran_vm_open,
4461         .close = zoran_vm_close,
4462 };
4463
4464 static int
4465 zoran_mmap (struct file           *file,
4466             struct vm_area_struct *vma)
4467 {
4468         struct zoran_fh *fh = file->private_data;
4469         struct zoran *zr = fh->zr;
4470         unsigned long size = (vma->vm_end - vma->vm_start);
4471         unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
4472         int i, j;
4473         unsigned long page, start = vma->vm_start, todo, pos, fraglen;
4474         int first, last;
4475         struct zoran_mapping *map;
4476         int res = 0;
4477
4478         dprintk(3,
4479                 KERN_INFO "%s: mmap(%s) of 0x%08lx-0x%08lx (size=%lu)\n",
4480                 ZR_DEVNAME(zr),
4481                 fh->map_mode == ZORAN_MAP_MODE_RAW ? "V4L" : "MJPEG",
4482                 vma->vm_start, vma->vm_end, size);
4483
4484         if (!(vma->vm_flags & VM_SHARED) || !(vma->vm_flags & VM_READ) ||
4485             !(vma->vm_flags & VM_WRITE)) {
4486                 dprintk(1,
4487                         KERN_ERR
4488                         "%s: mmap() - no MAP_SHARED/PROT_{READ,WRITE} given\n",
4489                         ZR_DEVNAME(zr));
4490                 return -EINVAL;
4491         }
4492
4493         switch (fh->map_mode) {
4494
4495         case ZORAN_MAP_MODE_JPG_REC:
4496         case ZORAN_MAP_MODE_JPG_PLAY:
4497
4498                 /* lock */
4499                 mutex_lock(&zr->resource_lock);
4500
4501                 /* Map the MJPEG buffers */
4502                 if (!fh->jpg_buffers.allocated) {
4503                         dprintk(1,
4504                                 KERN_ERR
4505                                 "%s: zoran_mmap(MJPEG) - buffers not yet allocated\n",
4506                                 ZR_DEVNAME(zr));
4507                         res = -ENOMEM;
4508                         goto jpg_mmap_unlock_and_return;
4509                 }
4510
4511                 first = offset / fh->jpg_buffers.buffer_size;
4512                 last = first - 1 + size / fh->jpg_buffers.buffer_size;
4513                 if (offset % fh->jpg_buffers.buffer_size != 0 ||
4514                     size % fh->jpg_buffers.buffer_size != 0 || first < 0 ||
4515                     last < 0 || first >= fh->jpg_buffers.num_buffers ||
4516                     last >= fh->jpg_buffers.num_buffers) {
4517                         dprintk(1,
4518                                 KERN_ERR
4519                                 "%s: mmap(MJPEG) - offset=%lu or size=%lu invalid for bufsize=%d and numbufs=%d\n",
4520                                 ZR_DEVNAME(zr), offset, size,
4521                                 fh->jpg_buffers.buffer_size,
4522                                 fh->jpg_buffers.num_buffers);
4523                         res = -EINVAL;
4524                         goto jpg_mmap_unlock_and_return;
4525                 }
4526                 for (i = first; i <= last; i++) {
4527                         if (fh->jpg_buffers.buffer[i].map) {
4528                                 dprintk(1,
4529                                         KERN_ERR
4530                                         "%s: mmap(MJPEG) - buffer %d already mapped\n",
4531                                         ZR_DEVNAME(zr), i);
4532                                 res = -EBUSY;
4533                                 goto jpg_mmap_unlock_and_return;
4534                         }
4535                 }
4536
4537                 /* map these buffers (v4l_buffers[i]) */
4538                 map = kmalloc(sizeof(struct zoran_mapping), GFP_KERNEL);
4539                 if (!map) {
4540                         res = -ENOMEM;
4541                         goto jpg_mmap_unlock_and_return;
4542                 }
4543                 map->file = file;
4544                 map->count = 1;
4545
4546                 vma->vm_ops = &zoran_vm_ops;
4547                 vma->vm_flags |= VM_DONTEXPAND;
4548                 vma->vm_private_data = map;
4549
4550                 for (i = first; i <= last; i++) {
4551                         for (j = 0;
4552                              j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
4553                              j++) {
4554                                 fraglen =
4555                                     (le32_to_cpu(fh->jpg_buffers.buffer[i].
4556                                      frag_tab[2 * j + 1]) & ~1) << 1;
4557                                 todo = size;
4558                                 if (todo > fraglen)
4559                                         todo = fraglen;
4560                                 pos =
4561                                     le32_to_cpu((unsigned long) fh->jpg_buffers.
4562                                     buffer[i].frag_tab[2 * j]);
4563                                 /* should just be pos on i386 */
4564                                 page = virt_to_phys(bus_to_virt(pos))
4565                                                                 >> PAGE_SHIFT;
4566                                 if (remap_pfn_range(vma, start, page,
4567                                                         todo, PAGE_SHARED)) {
4568                                         dprintk(1,
4569                                                 KERN_ERR
4570                                                 "%s: zoran_mmap(V4L) - remap_pfn_range failed\n",
4571                                                 ZR_DEVNAME(zr));
4572                                         res = -EAGAIN;
4573                                         goto jpg_mmap_unlock_and_return;
4574                                 }
4575                                 size -= todo;
4576                                 start += todo;
4577                                 if (size == 0)
4578                                         break;
4579                                 if (le32_to_cpu(fh->jpg_buffers.buffer[i].
4580                                     frag_tab[2 * j + 1]) & 1)
4581                                         break;  /* was last fragment */
4582                         }
4583                         fh->jpg_buffers.buffer[i].map = map;
4584                         if (size == 0)
4585                                 break;
4586
4587                 }
4588         jpg_mmap_unlock_and_return:
4589                 mutex_unlock(&zr->resource_lock);
4590
4591                 break;
4592
4593         case ZORAN_MAP_MODE_RAW:
4594
4595                 mutex_lock(&zr->resource_lock);
4596
4597                 /* Map the V4L buffers */
4598                 if (!fh->v4l_buffers.allocated) {
4599                         dprintk(1,
4600                                 KERN_ERR
4601                                 "%s: zoran_mmap(V4L) - buffers not yet allocated\n",
4602                                 ZR_DEVNAME(zr));
4603                         res = -ENOMEM;
4604                         goto v4l_mmap_unlock_and_return;
4605                 }
4606
4607                 first = offset / fh->v4l_buffers.buffer_size;
4608                 last = first - 1 + size / fh->v4l_buffers.buffer_size;
4609                 if (offset % fh->v4l_buffers.buffer_size != 0 ||
4610                     size % fh->v4l_buffers.buffer_size != 0 || first < 0 ||
4611                     last < 0 || first >= fh->v4l_buffers.num_buffers ||
4612                     last >= fh->v4l_buffers.buffer_size) {
4613                         dprintk(1,
4614                                 KERN_ERR
4615                                 "%s: mmap(V4L) - offset=%lu or size=%lu invalid for bufsize=%d and numbufs=%d\n",
4616                                 ZR_DEVNAME(zr), offset, size,
4617                                 fh->v4l_buffers.buffer_size,
4618                                 fh->v4l_buffers.num_buffers);
4619                         res = -EINVAL;
4620                         goto v4l_mmap_unlock_and_return;
4621                 }
4622                 for (i = first; i <= last; i++) {
4623                         if (fh->v4l_buffers.buffer[i].map) {
4624                                 dprintk(1,
4625                                         KERN_ERR
4626                                         "%s: mmap(V4L) - buffer %d already mapped\n",
4627                                         ZR_DEVNAME(zr), i);
4628                                 res = -EBUSY;
4629                                 goto v4l_mmap_unlock_and_return;
4630                         }
4631                 }
4632
4633                 /* map these buffers (v4l_buffers[i]) */
4634                 map = kmalloc(sizeof(struct zoran_mapping), GFP_KERNEL);
4635                 if (!map) {
4636                         res = -ENOMEM;
4637                         goto v4l_mmap_unlock_and_return;
4638                 }
4639                 map->file = file;
4640                 map->count = 1;
4641
4642                 vma->vm_ops = &zoran_vm_ops;
4643                 vma->vm_flags |= VM_DONTEXPAND;
4644                 vma->vm_private_data = map;
4645
4646                 for (i = first; i <= last; i++) {
4647                         todo = size;
4648                         if (todo > fh->v4l_buffers.buffer_size)
4649                                 todo = fh->v4l_buffers.buffer_size;
4650                         page = fh->v4l_buffers.buffer[i].fbuffer_phys;
4651                         if (remap_pfn_range(vma, start, page >> PAGE_SHIFT,
4652                                                         todo, PAGE_SHARED)) {
4653                                 dprintk(1,
4654                                         KERN_ERR
4655                                         "%s: zoran_mmap(V4L)i - remap_pfn_range failed\n",
4656                                         ZR_DEVNAME(zr));
4657                                 res = -EAGAIN;
4658                                 goto v4l_mmap_unlock_and_return;
4659                         }
4660                         size -= todo;
4661                         start += todo;
4662                         fh->v4l_buffers.buffer[i].map = map;
4663                         if (size == 0)
4664                                 break;
4665                 }
4666         v4l_mmap_unlock_and_return:
4667                 mutex_unlock(&zr->resource_lock);
4668
4669                 break;
4670
4671         default:
4672                 dprintk(1,
4673                         KERN_ERR
4674                         "%s: zoran_mmap() - internal error - unknown map mode %d\n",
4675                         ZR_DEVNAME(zr), fh->map_mode);
4676                 break;
4677         }
4678
4679         return 0;
4680 }
4681
4682 static const struct file_operations zoran_fops = {
4683         .owner = THIS_MODULE,
4684         .open = zoran_open,
4685         .release = zoran_close,
4686         .ioctl = zoran_ioctl,
4687         .compat_ioctl   = v4l_compat_ioctl32,
4688         .llseek = no_llseek,
4689         .read = zoran_read,
4690         .write = zoran_write,
4691         .mmap = zoran_mmap,
4692         .poll = zoran_poll,
4693 };
4694
4695 struct video_device zoran_template __devinitdata = {
4696         .name = ZORAN_NAME,
4697         .type = ZORAN_VID_TYPE,
4698 #ifdef CONFIG_VIDEO_V4L2
4699         .type2 = ZORAN_V4L2_VID_FLAGS,
4700 #endif
4701         .hardware = ZORAN_HARDWARE,
4702         .fops = &zoran_fops,
4703         .release = &zoran_vdev_release,
4704         .minor = -1
4705 };
4706