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zoran_driver.c

/*
 * Zoran zr36057/zr36067 PCI controller driver, for the
 * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
 * Media Labs LML33/LML33R10.
 *
 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
 *
 * Changes for BUZ by Wolfgang Scherr <scherr@net4you.net>
 *
 * Changes for DC10/DC30 by Laurent Pinchart <laurent.pinchart@skynet.be>
 *
 * Changes for LML33R10 by Maxim Yevtyushkin <max@linuxmedialabs.com>
 *
 * Changes for videodev2/v4l2 by Ronald Bultje <rbultje@ronald.bitfreak.net>
 *
 * Based on
 *
 * Miro DC10 driver
 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
 *
 * Iomega Buz driver version 1.0
 * Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
 *
 * buz.0.0.3
 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
 *
 * bttv - Bt848 frame grabber driver
 * Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
 *                        & Marcus Metzler (mocm@thp.uni-koeln.de)
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/version.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <linux/wait.h>
#include <linux/byteorder/generic.h>

#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>

#include <linux/spinlock.h>
#define     MAP_NR(x)       virt_to_page(x)
#define     ZORAN_VID_TYPE  ( \
                        VID_TYPE_CAPTURE | \
                        VID_TYPE_OVERLAY | \
                        VID_TYPE_CLIPPING | \
                        VID_TYPE_FRAMERAM | \
                        VID_TYPE_SCALES | \
                        VID_TYPE_MJPEG_DECODER | \
                        VID_TYPE_MJPEG_ENCODER \
                       )

#include <linux/videodev.h>
#include <media/v4l2-common.h>
#include "videocodec.h"

#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/proc_fs.h>

#include <linux/video_decoder.h>
#include <linux/video_encoder.h>
#include <linux/mutex.h>
#include "zoran.h"
#include "zoran_device.h"
#include "zoran_card.h"

#ifdef CONFIG_VIDEO_V4L2
      /* we declare some card type definitions here, they mean
       * the same as the v4l1 ZORAN_VID_TYPE above, except it's v4l2 */
#define ZORAN_V4L2_VID_FLAGS ( \
                        V4L2_CAP_STREAMING |\
                        V4L2_CAP_VIDEO_CAPTURE |\
                        V4L2_CAP_VIDEO_OUTPUT |\
                        V4L2_CAP_VIDEO_OVERLAY \
                        )
#endif

#include <asm/byteorder.h>

#if defined(CONFIG_VIDEO_V4L2) && defined(CONFIG_VIDEO_V4L1_COMPAT)
#define ZFMT(pal, fcc, cs) \
      .palette = (pal), .fourcc = (fcc), .colorspace = (cs)
#elif defined(CONFIG_VIDEO_V4L2)
#define ZFMT(pal, fcc, cs) \
      .fourcc = (fcc), .colorspace = (cs)
#else
#define ZFMT(pal, fcc, cs) \
      .palette = (pal)
#endif

const struct zoran_format zoran_formats[] = {
      {
            .name = "15-bit RGB LE",
            ZFMT(VIDEO_PALETTE_RGB555,
                 V4L2_PIX_FMT_RGB555, V4L2_COLORSPACE_SRGB),
            .depth = 15,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_RGB555|ZR36057_VFESPFR_ErrDif|
                     ZR36057_VFESPFR_LittleEndian,
      }, {
            .name = "15-bit RGB BE",
            ZFMT(-1,
                 V4L2_PIX_FMT_RGB555X, V4L2_COLORSPACE_SRGB),
            .depth = 15,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_RGB555|ZR36057_VFESPFR_ErrDif,
      }, {
            .name = "16-bit RGB LE",
            ZFMT(VIDEO_PALETTE_RGB565,
                 V4L2_PIX_FMT_RGB565, V4L2_COLORSPACE_SRGB),
            .depth = 16,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_RGB565|ZR36057_VFESPFR_ErrDif|
                     ZR36057_VFESPFR_LittleEndian,
      }, {
            .name = "16-bit RGB BE",
            ZFMT(-1,
                 V4L2_PIX_FMT_RGB565, V4L2_COLORSPACE_SRGB),
            .depth = 16,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_RGB565|ZR36057_VFESPFR_ErrDif,
      }, {
            .name = "24-bit RGB",
            ZFMT(VIDEO_PALETTE_RGB24,
                 V4L2_PIX_FMT_BGR24, V4L2_COLORSPACE_SRGB),
            .depth = 24,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_RGB888|ZR36057_VFESPFR_Pack24,
      }, {
            .name = "32-bit RGB LE",
            ZFMT(VIDEO_PALETTE_RGB32,
                 V4L2_PIX_FMT_BGR32, V4L2_COLORSPACE_SRGB),
            .depth = 32,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_RGB888|ZR36057_VFESPFR_LittleEndian,
      }, {
            .name = "32-bit RGB BE",
            ZFMT(-1,
                 V4L2_PIX_FMT_RGB32, V4L2_COLORSPACE_SRGB),
            .depth = 32,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_RGB888,
      }, {
            .name = "4:2:2, packed, YUYV",
            ZFMT(VIDEO_PALETTE_YUV422,
                 V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_SMPTE170M),
            .depth = 16,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_YUV422,
      }, {
            .name = "4:2:2, packed, UYVY",
            ZFMT(VIDEO_PALETTE_UYVY,
                 V4L2_PIX_FMT_UYVY, V4L2_COLORSPACE_SMPTE170M),
            .depth = 16,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_OVERLAY,
            .vfespfr = ZR36057_VFESPFR_YUV422|ZR36057_VFESPFR_LittleEndian,
      }, {
            .name = "Hardware-encoded Motion-JPEG",
            ZFMT(-1,
                 V4L2_PIX_FMT_MJPEG, V4L2_COLORSPACE_SMPTE170M),
            .depth = 0,
            .flags = ZORAN_FORMAT_CAPTURE |
                   ZORAN_FORMAT_PLAYBACK |
                   ZORAN_FORMAT_COMPRESSED,
      }
};
#define NUM_FORMATS ARRAY_SIZE(zoran_formats)

// RJ: Test only - want to test BUZ_USE_HIMEM even when CONFIG_BIGPHYS_AREA is defined


extern int v4l_nbufs;
extern int v4l_bufsize;
extern int jpg_nbufs;
extern int jpg_bufsize;
extern int pass_through;

static int lock_norm = 0;     /* 1=Don't change TV standard (norm) */
module_param(lock_norm, int, 0644);
MODULE_PARM_DESC(lock_norm, "Prevent norm changes (1 = ignore, >1 = fail)");

#ifdef CONFIG_VIDEO_V4L2
      /* small helper function for calculating buffersizes for v4l2
       * we calculate the nearest higher power-of-two, which
       * will be the recommended buffersize */
static __u32
zoran_v4l2_calc_bufsize (struct zoran_jpg_settings *settings)
{
      __u8 div = settings->VerDcm * settings->HorDcm * settings->TmpDcm;
      __u32 num = (1024 * 512) / (div);
      __u32 result = 2;

      num--;
      while (num) {
            num >>= 1;
            result <<= 1;
      }

      if (result > jpg_bufsize)
            return jpg_bufsize;
      if (result < 8192)
            return 8192;
      return result;
}
#endif

/* forward references */
static void v4l_fbuffer_free(struct file *file);
static void jpg_fbuffer_free(struct file *file);

/*
 *   Allocate the V4L grab buffers
 *
 *   These have to be pysically contiguous.
 *   If v4l_bufsize <= MAX_KMALLOC_MEM we use kmalloc
 *   else we try to allocate them with bigphysarea_alloc_pages
 *   if the bigphysarea patch is present in the kernel,
 *   else we try to use high memory (if the user has bootet
 *   Linux with the necessary memory left over).
 */

static unsigned long
get_high_mem (unsigned long size)
{
/*
 * Check if there is usable memory at the end of Linux memory
 * of at least size. Return the physical address of this memory,
 * return 0 on failure.
 *
 * The idea is from Alexandro Rubini's book "Linux device drivers".
 * The driver from him which is downloadable from O'Reilly's
 * web site misses the "virt_to_phys(high_memory)" part
 * (and therefore doesn't work at all - at least with 2.2.x kernels).
 *
 * It should be unnecessary to mention that THIS IS DANGEROUS,
 * if more than one driver at a time has the idea to use this memory!!!!
 */

      volatile unsigned char __iomem *mem;
      unsigned char c;
      unsigned long hi_mem_ph;
      unsigned long i;

      /* Map the high memory to user space */

      hi_mem_ph = virt_to_phys(high_memory);

      mem = ioremap(hi_mem_ph, size);
      if (!mem) {
            dprintk(1,
                  KERN_ERR "%s: get_high_mem() - ioremap failed\n",
                  ZORAN_NAME);
            return 0;
      }

      for (i = 0; i < size; i++) {
            /* Check if it is memory */
            c = i & 0xff;
            writeb(c, mem + i);
            if (readb(mem + i) != c)
                  break;
            c = 255 - c;
            writeb(c, mem + i);
            if (readb(mem + i) != c)
                  break;
            writeb(0, mem + i);     /* zero out memory */

            /* give the kernel air to breath */
            if ((i & 0x3ffff) == 0x3ffff)
                  schedule();
      }

      iounmap(mem);

      if (i != size) {
            dprintk(1,
                  KERN_ERR
                  "%s: get_high_mem() - requested %lu, avail %lu\n",
                  ZORAN_NAME, size, i);
            return 0;
      }

      return hi_mem_ph;
}

static int
v4l_fbuffer_alloc (struct file *file)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int i, off;
      unsigned char *mem;
      unsigned long pmem = 0;

      /* we might have old buffers lying around... */
      if (fh->v4l_buffers.ready_to_be_freed) {
            v4l_fbuffer_free(file);
      }

      for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
            if (fh->v4l_buffers.buffer[i].fbuffer)
                  dprintk(2,
                        KERN_WARNING
                        "%s: v4l_fbuffer_alloc() - buffer %d allready allocated!?\n",
                        ZR_DEVNAME(zr), i);

            //udelay(20);
            if (fh->v4l_buffers.buffer_size <= MAX_KMALLOC_MEM) {
                  /* Use kmalloc */

                  mem = kmalloc(fh->v4l_buffers.buffer_size, GFP_KERNEL);
                  if (mem == 0) {
                        dprintk(1,
                              KERN_ERR
                              "%s: v4l_fbuffer_alloc() - kmalloc for V4L buf %d failed\n",
                              ZR_DEVNAME(zr), i);
                        v4l_fbuffer_free(file);
                        return -ENOBUFS;
                  }
                  fh->v4l_buffers.buffer[i].fbuffer = mem;
                  fh->v4l_buffers.buffer[i].fbuffer_phys =
                      virt_to_phys(mem);
                  fh->v4l_buffers.buffer[i].fbuffer_bus =
                      virt_to_bus(mem);
                  for (off = 0; off < fh->v4l_buffers.buffer_size;
                       off += PAGE_SIZE)
                        SetPageReserved(MAP_NR(mem + off));
                  dprintk(4,
                        KERN_INFO
                        "%s: v4l_fbuffer_alloc() - V4L frame %d mem 0x%lx (bus: 0x%lx)\n",
                        ZR_DEVNAME(zr), i, (unsigned long) mem,
                        virt_to_bus(mem));
            } else {

                  /* Use high memory which has been left at boot time */

                  /* Ok., Ok. this is an evil hack - we make
                   * the assumption that physical addresses are
                   * the same as bus addresses (true at least
                   * for Intel processors). The whole method of
                   * obtaining and using this memory is not very
                   * nice - but I hope it saves some poor users
                   * from kernel hacking, which might have even
                   * more evil results */

                  if (i == 0) {
                        int size =
                            fh->v4l_buffers.num_buffers *
                            fh->v4l_buffers.buffer_size;

                        pmem = get_high_mem(size);
                        if (pmem == 0) {
                              dprintk(1,
                                    KERN_ERR
                                    "%s: v4l_fbuffer_alloc() - get_high_mem (size = %d KB) for V4L bufs failed\n",
                                    ZR_DEVNAME(zr), size >> 10);
                              return -ENOBUFS;
                        }
                        fh->v4l_buffers.buffer[0].fbuffer = NULL;
                        fh->v4l_buffers.buffer[0].fbuffer_phys = pmem;
                        fh->v4l_buffers.buffer[0].fbuffer_bus = pmem;
                        dprintk(4,
                              KERN_INFO
                              "%s: v4l_fbuffer_alloc() - using %d KB high memory\n",
                              ZR_DEVNAME(zr), size >> 10);
                  } else {
                        fh->v4l_buffers.buffer[i].fbuffer = NULL;
                        fh->v4l_buffers.buffer[i].fbuffer_phys =
                            pmem + i * fh->v4l_buffers.buffer_size;
                        fh->v4l_buffers.buffer[i].fbuffer_bus =
                            pmem + i * fh->v4l_buffers.buffer_size;
                  }
            }
      }

      fh->v4l_buffers.allocated = 1;

      return 0;
}

/* free the V4L grab buffers */
static void
v4l_fbuffer_free (struct file *file)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int i, off;
      unsigned char *mem;

      dprintk(4, KERN_INFO "%s: v4l_fbuffer_free()\n", ZR_DEVNAME(zr));

      for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
            if (!fh->v4l_buffers.buffer[i].fbuffer)
                  continue;

            if (fh->v4l_buffers.buffer_size <= MAX_KMALLOC_MEM) {
                  mem = fh->v4l_buffers.buffer[i].fbuffer;
                  for (off = 0; off < fh->v4l_buffers.buffer_size;
                       off += PAGE_SIZE)
                        ClearPageReserved(MAP_NR(mem + off));
                  kfree((void *) fh->v4l_buffers.buffer[i].fbuffer);
            }
            fh->v4l_buffers.buffer[i].fbuffer = NULL;
      }

      fh->v4l_buffers.allocated = 0;
      fh->v4l_buffers.ready_to_be_freed = 0;
}

/*
 *   Allocate the MJPEG grab buffers.
 *
 *   If the requested buffer size is smaller than MAX_KMALLOC_MEM,
 *   kmalloc is used to request a physically contiguous area,
 *   else we allocate the memory in framgents with get_zeroed_page.
 *
 *   If a Natoma chipset is present and this is a revision 1 zr36057,
 *   each MJPEG buffer needs to be physically contiguous.
 *   (RJ: This statement is from Dave Perks' original driver,
 *   I could never check it because I have a zr36067)
 *   The driver cares about this because it reduces the buffer
 *   size to MAX_KMALLOC_MEM in that case (which forces contiguous allocation).
 *
 *   RJ: The contents grab buffers needs never be accessed in the driver.
 *       Therefore there is no need to allocate them with vmalloc in order
 *       to get a contiguous virtual memory space.
 *       I don't understand why many other drivers first allocate them with
 *       vmalloc (which uses internally also get_zeroed_page, but delivers you
 *       virtual addresses) and then again have to make a lot of efforts
 *       to get the physical address.
 *
 *   Ben Capper:
 *       On big-endian architectures (such as ppc) some extra steps
 *       are needed. When reading and writing to the stat_com array
 *       and fragment buffers, the device expects to see little-
 *       endian values. The use of cpu_to_le32() and le32_to_cpu()
 *       in this function (and one or two others in zoran_device.c)
 *       ensure that these values are always stored in little-endian
 *       form, regardless of architecture. The zr36057 does Very Bad
 *       Things on big endian architectures if the stat_com array
 *       and fragment buffers are not little-endian.
 */

static int
jpg_fbuffer_alloc (struct file *file)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int i, j, off;
      unsigned long mem;

      /* we might have old buffers lying around */
      if (fh->jpg_buffers.ready_to_be_freed) {
            jpg_fbuffer_free(file);
      }

      for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
            if (fh->jpg_buffers.buffer[i].frag_tab)
                  dprintk(2,
                        KERN_WARNING
                        "%s: jpg_fbuffer_alloc() - buffer %d allready allocated!?\n",
                        ZR_DEVNAME(zr), i);

            /* Allocate fragment table for this buffer */

            mem = get_zeroed_page(GFP_KERNEL);
            if (mem == 0) {
                  dprintk(1,
                        KERN_ERR
                        "%s: jpg_fbuffer_alloc() - get_zeroed_page (frag_tab) failed for buffer %d\n",
                        ZR_DEVNAME(zr), i);
                  jpg_fbuffer_free(file);
                  return -ENOBUFS;
            }
            fh->jpg_buffers.buffer[i].frag_tab = (u32 *) mem;
            fh->jpg_buffers.buffer[i].frag_tab_bus =
                virt_to_bus((void *) mem);

            //if (alloc_contig) {
            if (fh->jpg_buffers.need_contiguous) {
                  mem =
                      (unsigned long) kmalloc(fh->jpg_buffers.
                                        buffer_size,
                                        GFP_KERNEL);
                  if (mem == 0) {
                        dprintk(1,
                              KERN_ERR
                              "%s: jpg_fbuffer_alloc() - kmalloc failed for buffer %d\n",
                              ZR_DEVNAME(zr), i);
                        jpg_fbuffer_free(file);
                        return -ENOBUFS;
                  }
                  fh->jpg_buffers.buffer[i].frag_tab[0] =
                      cpu_to_le32(virt_to_bus((void *) mem));
                  fh->jpg_buffers.buffer[i].frag_tab[1] =
                      cpu_to_le32(((fh->jpg_buffers.buffer_size / 4) << 1) | 1);
                  for (off = 0; off < fh->jpg_buffers.buffer_size;
                       off += PAGE_SIZE)
                        SetPageReserved(MAP_NR(mem + off));
            } else {
                  /* jpg_bufsize is allreay page aligned */
                  for (j = 0;
                       j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
                       j++) {
                        mem = get_zeroed_page(GFP_KERNEL);
                        if (mem == 0) {
                              dprintk(1,
                                    KERN_ERR
                                    "%s: jpg_fbuffer_alloc() - get_zeroed_page failed for buffer %d\n",
                                    ZR_DEVNAME(zr), i);
                              jpg_fbuffer_free(file);
                              return -ENOBUFS;
                        }

                        fh->jpg_buffers.buffer[i].frag_tab[2 * j] =
                            cpu_to_le32(virt_to_bus((void *) mem));
                        fh->jpg_buffers.buffer[i].frag_tab[2 * j +
                                                   1] =
                            cpu_to_le32((PAGE_SIZE / 4) << 1);
                        SetPageReserved(MAP_NR(mem));
                  }

                  fh->jpg_buffers.buffer[i].frag_tab[2 * j - 1] |= cpu_to_le32(1);
            }
      }

      dprintk(4,
            KERN_DEBUG "%s: jpg_fbuffer_alloc() - %d KB allocated\n",
            ZR_DEVNAME(zr),
            (fh->jpg_buffers.num_buffers *
             fh->jpg_buffers.buffer_size) >> 10);

      fh->jpg_buffers.allocated = 1;

      return 0;
}

/* free the MJPEG grab buffers */
static void
jpg_fbuffer_free (struct file *file)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int i, j, off;
      unsigned char *mem;

      dprintk(4, KERN_DEBUG "%s: jpg_fbuffer_free()\n", ZR_DEVNAME(zr));

      for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
            if (!fh->jpg_buffers.buffer[i].frag_tab)
                  continue;

            //if (alloc_contig) {
            if (fh->jpg_buffers.need_contiguous) {
                  if (fh->jpg_buffers.buffer[i].frag_tab[0]) {
                        mem = (unsigned char *) bus_to_virt(le32_to_cpu(
                              fh->jpg_buffers.buffer[i].frag_tab[0]));
                        for (off = 0;
                             off < fh->jpg_buffers.buffer_size;
                             off += PAGE_SIZE)
                              ClearPageReserved(MAP_NR
                                            (mem + off));
                        kfree(mem);
                        fh->jpg_buffers.buffer[i].frag_tab[0] = 0;
                        fh->jpg_buffers.buffer[i].frag_tab[1] = 0;
                  }
            } else {
                  for (j = 0;
                       j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
                       j++) {
                        if (!fh->jpg_buffers.buffer[i].
                            frag_tab[2 * j])
                              break;
                        ClearPageReserved(MAP_NR
                                      (bus_to_virt
                                       (le32_to_cpu
                                        (fh->jpg_buffers.
                                         buffer[i].frag_tab[2 *
                                                       j]))));
                        free_page((unsigned long)
                                bus_to_virt
                                      (le32_to_cpu
                                       (fh->jpg_buffers.
                                          buffer[i].
                                          frag_tab[2 * j])));
                        fh->jpg_buffers.buffer[i].frag_tab[2 * j] =
                            0;
                        fh->jpg_buffers.buffer[i].frag_tab[2 * j +
                                                   1] = 0;
                  }
            }

            free_page((unsigned long) fh->jpg_buffers.buffer[i].
                    frag_tab);
            fh->jpg_buffers.buffer[i].frag_tab = NULL;
      }

      fh->jpg_buffers.allocated = 0;
      fh->jpg_buffers.ready_to_be_freed = 0;
}

/*
 *   V4L Buffer grabbing
 */

static int
zoran_v4l_set_format (struct file               *file,
                  int                        width,
                  int                        height,
                  const struct zoran_format *format)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int bpp;

      /* Check size and format of the grab wanted */

      if (height < BUZ_MIN_HEIGHT || width < BUZ_MIN_WIDTH ||
          height > BUZ_MAX_HEIGHT || width > BUZ_MAX_WIDTH) {
            dprintk(1,
                  KERN_ERR
                  "%s: v4l_set_format() - wrong frame size (%dx%d)\n",
                  ZR_DEVNAME(zr), width, height);
            return -EINVAL;
      }

      bpp = (format->depth + 7) / 8;

      /* Check against available buffer size */
      if (height * width * bpp > fh->v4l_buffers.buffer_size) {
            dprintk(1,
                  KERN_ERR
                  "%s: v4l_set_format() - video buffer size (%d kB) is too small\n",
                  ZR_DEVNAME(zr), fh->v4l_buffers.buffer_size >> 10);
            return -EINVAL;
      }

      /* The video front end needs 4-byte alinged line sizes */

      if ((bpp == 2 && (width & 1)) || (bpp == 3 && (width & 3))) {
            dprintk(1,
                  KERN_ERR
                  "%s: v4l_set_format() - wrong frame alingment\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }

      fh->v4l_settings.width = width;
      fh->v4l_settings.height = height;
      fh->v4l_settings.format = format;
      fh->v4l_settings.bytesperline = bpp * fh->v4l_settings.width;

      return 0;
}

static int
zoran_v4l_queue_frame (struct file *file,
                   int          num)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      unsigned long flags;
      int res = 0;

      if (!fh->v4l_buffers.allocated) {
            dprintk(1,
                  KERN_ERR
                  "%s: v4l_queue_frame() - buffers not yet allocated\n",
                  ZR_DEVNAME(zr));
            res = -ENOMEM;
      }

      /* No grabbing outside the buffer range! */
      if (num >= fh->v4l_buffers.num_buffers || num < 0) {
            dprintk(1,
                  KERN_ERR
                  "%s: v4l_queue_frame() - buffer %d is out of range\n",
                  ZR_DEVNAME(zr), num);
            res = -EINVAL;
      }

      spin_lock_irqsave(&zr->spinlock, flags);

      if (fh->v4l_buffers.active == ZORAN_FREE) {
            if (zr->v4l_buffers.active == ZORAN_FREE) {
                  zr->v4l_buffers = fh->v4l_buffers;
                  fh->v4l_buffers.active = ZORAN_ACTIVE;
            } else {
                  dprintk(1,
                        KERN_ERR
                        "%s: v4l_queue_frame() - another session is already capturing\n",
                        ZR_DEVNAME(zr));
                  res = -EBUSY;
            }
      }

      /* make sure a grab isn't going on currently with this buffer */
      if (!res) {
            switch (zr->v4l_buffers.buffer[num].state) {
            default:
            case BUZ_STATE_PEND:
                  if (zr->v4l_buffers.active == ZORAN_FREE) {
                        fh->v4l_buffers.active = ZORAN_FREE;
                        zr->v4l_buffers.allocated = 0;
                  }
                  res = -EBUSY;     /* what are you doing? */
                  break;
            case BUZ_STATE_DONE:
                  dprintk(2,
                        KERN_WARNING
                        "%s: v4l_queue_frame() - queueing buffer %d in state DONE!?\n",
                        ZR_DEVNAME(zr), num);
            case BUZ_STATE_USER:
                  /* since there is at least one unused buffer there's room for at least
                   * one more pend[] entry */
                  zr->v4l_pend[zr->v4l_pend_head++ &
                              V4L_MASK_FRAME] = num;
                  zr->v4l_buffers.buffer[num].state = BUZ_STATE_PEND;
                  zr->v4l_buffers.buffer[num].bs.length =
                      fh->v4l_settings.bytesperline *
                      zr->v4l_settings.height;
                  fh->v4l_buffers.buffer[num] =
                      zr->v4l_buffers.buffer[num];
                  break;
            }
      }

      spin_unlock_irqrestore(&zr->spinlock, flags);

      if (!res && zr->v4l_buffers.active == ZORAN_FREE)
            zr->v4l_buffers.active = fh->v4l_buffers.active;

      return res;
}

static int
v4l_grab (struct file       *file,
        struct video_mmap *mp)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int res = 0, i;

      for (i = 0; i < NUM_FORMATS; i++) {
            if (zoran_formats[i].palette == mp->format &&
                zoran_formats[i].flags & ZORAN_FORMAT_CAPTURE &&
                !(zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED))
                  break;
      }
      if (i == NUM_FORMATS || zoran_formats[i].depth == 0) {
            dprintk(1,
                  KERN_ERR
                  "%s: v4l_grab() - wrong bytes-per-pixel format\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }

      /*
       * To minimize the time spent in the IRQ routine, we avoid setting up
       * the video front end there.
       * If this grab has different parameters from a running streaming capture
       * we stop the streaming capture and start it over again.
       */
      if (zr->v4l_memgrab_active &&
          (zr->v4l_settings.width != mp->width ||
           zr->v4l_settings.height != mp->height ||
           zr->v4l_settings.format->palette != mp->format)) {
            res = wait_grab_pending(zr);
            if (res)
                  return res;
      }
      if ((res = zoran_v4l_set_format(file,
                              mp->width,
                              mp->height,
                              &zoran_formats[i])))
            return res;
      zr->v4l_settings = fh->v4l_settings;

      /* queue the frame in the pending queue */
      if ((res = zoran_v4l_queue_frame(file, mp->frame))) {
            fh->v4l_buffers.active = ZORAN_FREE;
            return res;
      }

      /* put the 36057 into frame grabbing mode */
      if (!res && !zr->v4l_memgrab_active)
            zr36057_set_memgrab(zr, 1);

      //dprintk(4, KERN_INFO "%s: Frame grab 3...\n", ZR_DEVNAME(zr));

      return res;
}

/*
 * Sync on a V4L buffer
 */

static int
v4l_sync (struct file *file,
        int          frame)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      unsigned long flags;

      if (fh->v4l_buffers.active == ZORAN_FREE) {
            dprintk(1,
                  KERN_ERR
                  "%s: v4l_sync() - no grab active for this session\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }

      /* check passed-in frame number */
      if (frame >= fh->v4l_buffers.num_buffers || frame < 0) {
            dprintk(1,
                  KERN_ERR "%s: v4l_sync() - frame %d is invalid\n",
                  ZR_DEVNAME(zr), frame);
            return -EINVAL;
      }

      /* Check if is buffer was queued at all */
      if (zr->v4l_buffers.buffer[frame].state == BUZ_STATE_USER) {
            dprintk(1,
                  KERN_ERR
                  "%s: v4l_sync() - attempt to sync on a buffer which was not queued?\n",
                  ZR_DEVNAME(zr));
            return -EPROTO;
      }

      /* wait on this buffer to get ready */
      if (!wait_event_interruptible_timeout(zr->v4l_capq,
                        (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_PEND),
                        10*HZ))
            return -ETIME;
      if (signal_pending(current))
            return -ERESTARTSYS;

      /* buffer should now be in BUZ_STATE_DONE */
      if (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_DONE)
            dprintk(2,
                  KERN_ERR "%s: v4l_sync() - internal state error\n",
                  ZR_DEVNAME(zr));

      zr->v4l_buffers.buffer[frame].state = BUZ_STATE_USER;
      fh->v4l_buffers.buffer[frame] = zr->v4l_buffers.buffer[frame];

      spin_lock_irqsave(&zr->spinlock, flags);

      /* Check if streaming capture has finished */
      if (zr->v4l_pend_tail == zr->v4l_pend_head) {
            zr36057_set_memgrab(zr, 0);
            if (zr->v4l_buffers.active == ZORAN_ACTIVE) {
                  fh->v4l_buffers.active = zr->v4l_buffers.active =
                      ZORAN_FREE;
                  zr->v4l_buffers.allocated = 0;
            }
      }

      spin_unlock_irqrestore(&zr->spinlock, flags);

      return 0;
}

/*
 *   Queue a MJPEG buffer for capture/playback
 */

static int
zoran_jpg_queue_frame (struct file          *file,
                   int                   num,
                   enum zoran_codec_mode mode)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      unsigned long flags;
      int res = 0;

      /* Check if buffers are allocated */
      if (!fh->jpg_buffers.allocated) {
            dprintk(1,
                  KERN_ERR
                  "%s: jpg_queue_frame() - buffers not yet allocated\n",
                  ZR_DEVNAME(zr));
            return -ENOMEM;
      }

      /* No grabbing outside the buffer range! */
      if (num >= fh->jpg_buffers.num_buffers || num < 0) {
            dprintk(1,
                  KERN_ERR
                  "%s: jpg_queue_frame() - buffer %d out of range\n",
                  ZR_DEVNAME(zr), num);
            return -EINVAL;
      }

      /* what is the codec mode right now? */
      if (zr->codec_mode == BUZ_MODE_IDLE) {
            zr->jpg_settings = fh->jpg_settings;
      } else if (zr->codec_mode != mode) {
            /* wrong codec mode active - invalid */
            dprintk(1,
                  KERN_ERR
                  "%s: jpg_queue_frame() - codec in wrong mode\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }

      if (fh->jpg_buffers.active == ZORAN_FREE) {
            if (zr->jpg_buffers.active == ZORAN_FREE) {
                  zr->jpg_buffers = fh->jpg_buffers;
                  fh->jpg_buffers.active = ZORAN_ACTIVE;
            } else {
                  dprintk(1,
                        KERN_ERR
                        "%s: jpg_queue_frame() - another session is already capturing\n",
                        ZR_DEVNAME(zr));
                  res = -EBUSY;
            }
      }

      if (!res && zr->codec_mode == BUZ_MODE_IDLE) {
            /* Ok load up the jpeg codec */
            zr36057_enable_jpg(zr, mode);
      }

      spin_lock_irqsave(&zr->spinlock, flags);

      if (!res) {
            switch (zr->jpg_buffers.buffer[num].state) {
            case BUZ_STATE_DONE:
                  dprintk(2,
                        KERN_WARNING
                        "%s: jpg_queue_frame() - queing frame in BUZ_STATE_DONE state!?\n",
                        ZR_DEVNAME(zr));
            case BUZ_STATE_USER:
                  /* since there is at least one unused buffer there's room for at
                   *least one more pend[] entry */
                  zr->jpg_pend[zr->jpg_que_head++ & BUZ_MASK_FRAME] =
                      num;
                  zr->jpg_buffers.buffer[num].state = BUZ_STATE_PEND;
                  fh->jpg_buffers.buffer[num] =
                      zr->jpg_buffers.buffer[num];
                  zoran_feed_stat_com(zr);
                  break;
            default:
            case BUZ_STATE_DMA:
            case BUZ_STATE_PEND:
                  if (zr->jpg_buffers.active == ZORAN_FREE) {
                        fh->jpg_buffers.active = ZORAN_FREE;
                        zr->jpg_buffers.allocated = 0;
                  }
                  res = -EBUSY;     /* what are you doing? */
                  break;
            }
      }

      spin_unlock_irqrestore(&zr->spinlock, flags);

      if (!res && zr->jpg_buffers.active == ZORAN_FREE) {
            zr->jpg_buffers.active = fh->jpg_buffers.active;
      }

      return res;
}

static int
jpg_qbuf (struct file          *file,
        int                   frame,
        enum zoran_codec_mode mode)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int res = 0;

      /* Does the user want to stop streaming? */
      if (frame < 0) {
            if (zr->codec_mode == mode) {
                  if (fh->jpg_buffers.active == ZORAN_FREE) {
                        dprintk(1,
                              KERN_ERR
                              "%s: jpg_qbuf(-1) - session not active\n",
                              ZR_DEVNAME(zr));
                        return -EINVAL;
                  }
                  fh->jpg_buffers.active = zr->jpg_buffers.active =
                      ZORAN_FREE;
                  zr->jpg_buffers.allocated = 0;
                  zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
                  return 0;
            } else {
                  dprintk(1,
                        KERN_ERR
                        "%s: jpg_qbuf() - stop streaming but not in streaming mode\n",
                        ZR_DEVNAME(zr));
                  return -EINVAL;
            }
      }

      if ((res = zoran_jpg_queue_frame(file, frame, mode)))
            return res;

      /* Start the jpeg codec when the first frame is queued  */
      if (!res && zr->jpg_que_head == 1)
            jpeg_start(zr);

      return res;
}

/*
 *   Sync on a MJPEG buffer
 */

static int
jpg_sync (struct file       *file,
        struct zoran_sync *bs)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      unsigned long flags;
      int frame;

      if (fh->jpg_buffers.active == ZORAN_FREE) {
            dprintk(1,
                  KERN_ERR
                  "%s: jpg_sync() - capture is not currently active\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }
      if (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS &&
          zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) {
            dprintk(1,
                  KERN_ERR
                  "%s: jpg_sync() - codec not in streaming mode\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }
      if (!wait_event_interruptible_timeout(zr->jpg_capq,
                  (zr->jpg_que_tail != zr->jpg_dma_tail ||
                   zr->jpg_dma_tail == zr->jpg_dma_head),
                  10*HZ)) {
            int isr;

            btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
            udelay(1);
            zr->codec->control(zr->codec, CODEC_G_STATUS,
                                 sizeof(isr), &isr);
            dprintk(1,
                  KERN_ERR
                  "%s: jpg_sync() - timeout: codec isr=0x%02x\n",
                  ZR_DEVNAME(zr), isr);

            return -ETIME;

      }
      if (signal_pending(current))
            return -ERESTARTSYS;

      spin_lock_irqsave(&zr->spinlock, flags);

      if (zr->jpg_dma_tail != zr->jpg_dma_head)
            frame = zr->jpg_pend[zr->jpg_que_tail++ & BUZ_MASK_FRAME];
      else
            frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];

      /* buffer should now be in BUZ_STATE_DONE */
      if (zr->jpg_buffers.buffer[frame].state != BUZ_STATE_DONE)
            dprintk(2,
                  KERN_ERR "%s: jpg_sync() - internal state error\n",
                  ZR_DEVNAME(zr));

      *bs = zr->jpg_buffers.buffer[frame].bs;
      bs->frame = frame;
      zr->jpg_buffers.buffer[frame].state = BUZ_STATE_USER;
      fh->jpg_buffers.buffer[frame] = zr->jpg_buffers.buffer[frame];

      spin_unlock_irqrestore(&zr->spinlock, flags);

      return 0;
}

static void
zoran_open_init_session (struct file *file)
{
      int i;
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;

      /* Per default, map the V4L Buffers */
      fh->map_mode = ZORAN_MAP_MODE_RAW;

      /* take over the card's current settings */
      fh->overlay_settings = zr->overlay_settings;
      fh->overlay_settings.is_set = 0;
      fh->overlay_settings.format = zr->overlay_settings.format;
      fh->overlay_active = ZORAN_FREE;

      /* v4l settings */
      fh->v4l_settings = zr->v4l_settings;

      /* v4l_buffers */
      memset(&fh->v4l_buffers, 0, sizeof(struct zoran_v4l_struct));
      for (i = 0; i < VIDEO_MAX_FRAME; i++) {
            fh->v4l_buffers.buffer[i].state = BUZ_STATE_USER;     /* nothing going on */
            fh->v4l_buffers.buffer[i].bs.frame = i;
      }
      fh->v4l_buffers.allocated = 0;
      fh->v4l_buffers.ready_to_be_freed = 0;
      fh->v4l_buffers.active = ZORAN_FREE;
      fh->v4l_buffers.buffer_size = v4l_bufsize;
      fh->v4l_buffers.num_buffers = v4l_nbufs;

      /* jpg settings */
      fh->jpg_settings = zr->jpg_settings;

      /* jpg_buffers */
      memset(&fh->jpg_buffers, 0, sizeof(struct zoran_jpg_struct));
      for (i = 0; i < BUZ_MAX_FRAME; i++) {
            fh->jpg_buffers.buffer[i].state = BUZ_STATE_USER;     /* nothing going on */
            fh->jpg_buffers.buffer[i].bs.frame = i;
      }
      fh->jpg_buffers.need_contiguous = zr->jpg_buffers.need_contiguous;
      fh->jpg_buffers.allocated = 0;
      fh->jpg_buffers.ready_to_be_freed = 0;
      fh->jpg_buffers.active = ZORAN_FREE;
      fh->jpg_buffers.buffer_size = jpg_bufsize;
      fh->jpg_buffers.num_buffers = jpg_nbufs;
}

static void
zoran_close_end_session (struct file *file)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;

      /* overlay */
      if (fh->overlay_active != ZORAN_FREE) {
            fh->overlay_active = zr->overlay_active = ZORAN_FREE;
            zr->v4l_overlay_active = 0;
            if (!zr->v4l_memgrab_active)
                  zr36057_overlay(zr, 0);
            zr->overlay_mask = NULL;
      }

      /* v4l capture */
      if (fh->v4l_buffers.active != ZORAN_FREE) {
            long flags;

            spin_lock_irqsave(&zr->spinlock, flags);
            zr36057_set_memgrab(zr, 0);
            zr->v4l_buffers.allocated = 0;
            zr->v4l_buffers.active = fh->v4l_buffers.active =
                ZORAN_FREE;
            spin_unlock_irqrestore(&zr->spinlock, flags);
      }

      /* v4l buffers */
      if (fh->v4l_buffers.allocated ||
          fh->v4l_buffers.ready_to_be_freed) {
            v4l_fbuffer_free(file);
      }

      /* jpg capture */
      if (fh->jpg_buffers.active != ZORAN_FREE) {
            zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
            zr->jpg_buffers.allocated = 0;
            zr->jpg_buffers.active = fh->jpg_buffers.active =
                ZORAN_FREE;
      }

      /* jpg buffers */
      if (fh->jpg_buffers.allocated ||
          fh->jpg_buffers.ready_to_be_freed) {
            jpg_fbuffer_free(file);
      }
}

/*
 *   Open a zoran card. Right now the flags stuff is just playing
 */

static int
zoran_open (struct inode *inode,
          struct file  *file)
{
      unsigned int minor = iminor(inode);
      struct zoran *zr = NULL;
      struct zoran_fh *fh;
      int i, res, first_open = 0, have_module_locks = 0;

      /* find the device */
      for (i = 0; i < zoran_num; i++) {
            if (zoran[i].video_dev->minor == minor) {
                  zr = &zoran[i];
                  break;
            }
      }

      if (!zr) {
            dprintk(1, KERN_ERR "%s: device not found!\n", ZORAN_NAME);
            res = -ENODEV;
            goto open_unlock_and_return;
      }

      /* see fs/device.c - the kernel already locks during open(),
       * so locking ourselves only causes deadlocks */
      /*mutex_lock(&zr->resource_lock);*/

      if (!zr->decoder) {
            dprintk(1,
                  KERN_ERR "%s: no TV decoder loaded for device!\n",
                  ZR_DEVNAME(zr));
            res = -EIO;
            goto open_unlock_and_return;
      }

      /* try to grab a module lock */
      if (!try_module_get(THIS_MODULE)) {
            dprintk(1,
                  KERN_ERR
                  "%s: failed to acquire my own lock! PANIC!\n",
                  ZR_DEVNAME(zr));
            res = -ENODEV;
            goto open_unlock_and_return;
      }
      if (!try_module_get(zr->decoder->driver->driver.owner)) {
            dprintk(1,
                  KERN_ERR
                  "%s: failed to grab ownership of i2c decoder\n",
                  ZR_DEVNAME(zr));
            res = -EIO;
            module_put(THIS_MODULE);
            goto open_unlock_and_return;
      }
      if (zr->encoder &&
          !try_module_get(zr->encoder->driver->driver.owner)) {
            dprintk(1,
                  KERN_ERR
                  "%s: failed to grab ownership of i2c encoder\n",
                  ZR_DEVNAME(zr));
            res = -EIO;
            module_put(zr->decoder->driver->driver.owner);
            module_put(THIS_MODULE);
            goto open_unlock_and_return;
      }

      have_module_locks = 1;

      if (zr->user >= 2048) {
            dprintk(1, KERN_ERR "%s: too many users (%d) on device\n",
                  ZR_DEVNAME(zr), zr->user);
            res = -EBUSY;
            goto open_unlock_and_return;
      }

      dprintk(1, KERN_INFO "%s: zoran_open(%s, pid=[%d]), users(-)=%d\n",
            ZR_DEVNAME(zr), current->comm, task_pid_nr(current), zr->user);

      /* now, create the open()-specific file_ops struct */
      fh = kzalloc(sizeof(struct zoran_fh), GFP_KERNEL);
      if (!fh) {
            dprintk(1,
                  KERN_ERR
                  "%s: zoran_open() - allocation of zoran_fh failed\n",
                  ZR_DEVNAME(zr));
            res = -ENOMEM;
            goto open_unlock_and_return;
      }
      /* used to be BUZ_MAX_WIDTH/HEIGHT, but that gives overflows
       * on norm-change! */
      fh->overlay_mask =
          kmalloc(((768 + 31) / 32) * 576 * 4, GFP_KERNEL);
      if (!fh->overlay_mask) {
            dprintk(1,
                  KERN_ERR
                  "%s: zoran_open() - allocation of overlay_mask failed\n",
                  ZR_DEVNAME(zr));
            kfree(fh);
            res = -ENOMEM;
            goto open_unlock_and_return;
      }

      if (zr->user++ == 0)
            first_open = 1;

      /*mutex_unlock(&zr->resource_lock);*/

      /* default setup - TODO: look at flags */
      if (first_open) { /* First device open */
            zr36057_restart(zr);
            zoran_open_init_params(zr);
            zoran_init_hardware(zr);

            btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
      }

      /* set file_ops stuff */
      file->private_data = fh;
      fh->zr = zr;
      zoran_open_init_session(file);

      return 0;

open_unlock_and_return:
      /* if we grabbed locks, release them accordingly */
      if (have_module_locks) {
            module_put(zr->decoder->driver->driver.owner);
            if (zr->encoder) {
                  module_put(zr->encoder->driver->driver.owner);
            }
            module_put(THIS_MODULE);
      }

      /* if there's no device found, we didn't obtain the lock either */
      if (zr) {
            /*mutex_unlock(&zr->resource_lock);*/
      }

      return res;
}

static int
zoran_close (struct inode *inode,
           struct file  *file)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;

      dprintk(1, KERN_INFO "%s: zoran_close(%s, pid=[%d]), users(+)=%d\n",
            ZR_DEVNAME(zr), current->comm, task_pid_nr(current), zr->user);

      /* kernel locks (fs/device.c), so don't do that ourselves
       * (prevents deadlocks) */
      /*mutex_lock(&zr->resource_lock);*/

      zoran_close_end_session(file);

      if (zr->user-- == 1) {  /* Last process */
            /* Clean up JPEG process */
            wake_up_interruptible(&zr->jpg_capq);
            zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
            zr->jpg_buffers.allocated = 0;
            zr->jpg_buffers.active = ZORAN_FREE;

            /* disable interrupts */
            btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);

            if (zr36067_debug > 1)
                  print_interrupts(zr);

            /* Overlay off */
            zr->v4l_overlay_active = 0;
            zr36057_overlay(zr, 0);
            zr->overlay_mask = NULL;

            /* capture off */
            wake_up_interruptible(&zr->v4l_capq);
            zr36057_set_memgrab(zr, 0);
            zr->v4l_buffers.allocated = 0;
            zr->v4l_buffers.active = ZORAN_FREE;
            zoran_set_pci_master(zr, 0);

            if (!pass_through) {    /* Switch to color bar */
                  int zero = 0, two = 2;
                  decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
                  encoder_command(zr, ENCODER_SET_INPUT, &two);
            }
      }

      file->private_data = NULL;
      kfree(fh->overlay_mask);
      kfree(fh);

      /* release locks on the i2c modules */
      module_put(zr->decoder->driver->driver.owner);
      if (zr->encoder) {
             module_put(zr->encoder->driver->driver.owner);
      }
      module_put(THIS_MODULE);

      /*mutex_unlock(&zr->resource_lock);*/

      dprintk(4, KERN_INFO "%s: zoran_close() done\n", ZR_DEVNAME(zr));

      return 0;
}


static ssize_t
zoran_read (struct file *file,
          char        __user *data,
          size_t       count,
          loff_t      *ppos)
{
      /* we simply don't support read() (yet)... */

      return -EINVAL;
}

static ssize_t
zoran_write (struct file *file,
           const char  __user *data,
           size_t       count,
           loff_t      *ppos)
{
      /* ...and the same goes for write() */

      return -EINVAL;
}

static int
setup_fbuffer (struct file               *file,
             void                      *base,
             const struct zoran_format *fmt,
             int                        width,
             int                        height,
             int                        bytesperline)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;

      /* (Ronald) v4l/v4l2 guidelines */
      if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
            return -EPERM;

      /* Don't allow frame buffer overlay if PCI or AGP is buggy, or on
         ALi Magik (that needs very low latency while the card needs a
         higher value always) */

      if (pci_pci_problems & (PCIPCI_FAIL | PCIAGP_FAIL | PCIPCI_ALIMAGIK))
            return -ENXIO;

      /* we need a bytesperline value, even if not given */
      if (!bytesperline)
            bytesperline = width * ((fmt->depth + 7) & ~7) / 8;

#if 0
      if (zr->overlay_active) {
            /* dzjee... stupid users... don't even bother to turn off
             * overlay before changing the memory location...
             * normally, we would return errors here. However, one of
             * the tools that does this is... xawtv! and since xawtv
             * is used by +/- 99% of the users, we'd rather be user-
             * friendly and silently do as if nothing went wrong */
            dprintk(3,
                  KERN_ERR
                  "%s: setup_fbuffer() - forced overlay turnoff because framebuffer changed\n",
                  ZR_DEVNAME(zr));
            zr36057_overlay(zr, 0);
      }
#endif

      if (!(fmt->flags & ZORAN_FORMAT_OVERLAY)) {
            dprintk(1,
                  KERN_ERR
                  "%s: setup_fbuffer() - no valid overlay format given\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }
      if (height <= 0 || width <= 0 || bytesperline <= 0) {
            dprintk(1,
                  KERN_ERR
                  "%s: setup_fbuffer() - invalid height/width/bpl value (%d|%d|%d)\n",
                  ZR_DEVNAME(zr), width, height, bytesperline);
            return -EINVAL;
      }
      if (bytesperline & 3) {
            dprintk(1,
                  KERN_ERR
                  "%s: setup_fbuffer() - bytesperline (%d) must be 4-byte aligned\n",
                  ZR_DEVNAME(zr), bytesperline);
            return -EINVAL;
      }

      zr->buffer.base = (void *) ((unsigned long) base & ~3);
      zr->buffer.height = height;
      zr->buffer.width = width;
      zr->buffer.depth = fmt->depth;
      zr->overlay_settings.format = fmt;
      zr->buffer.bytesperline = bytesperline;

      /* The user should set new window parameters */
      zr->overlay_settings.is_set = 0;

      return 0;
}


static int
setup_window (struct file       *file,
            int                x,
            int                y,
            int                width,
            int                height,
            struct video_clip __user *clips,
            int                clipcount,
            void              __user *bitmap)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      struct video_clip *vcp = NULL;
      int on, end;


      if (!zr->buffer.base) {
            dprintk(1,
                  KERN_ERR
                  "%s: setup_window() - frame buffer has to be set first\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }

      if (!fh->overlay_settings.format) {
            dprintk(1,
                  KERN_ERR
                  "%s: setup_window() - no overlay format set\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }

      /*
       * The video front end needs 4-byte alinged line sizes, we correct that
       * silently here if necessary
       */
      if (zr->buffer.depth == 15 || zr->buffer.depth == 16) {
            end = (x + width) & ~1; /* round down */
            x = (x + 1) & ~1; /* round up */
            width = end - x;
      }

      if (zr->buffer.depth == 24) {
            end = (x + width) & ~3; /* round down */
            x = (x + 3) & ~3; /* round up */
            width = end - x;
      }

      if (width > BUZ_MAX_WIDTH)
            width = BUZ_MAX_WIDTH;
      if (height > BUZ_MAX_HEIGHT)
            height = BUZ_MAX_HEIGHT;

      /* Check for vaild parameters */
      if (width < BUZ_MIN_WIDTH || height < BUZ_MIN_HEIGHT ||
          width > BUZ_MAX_WIDTH || height > BUZ_MAX_HEIGHT) {
            dprintk(1,
                  KERN_ERR
                  "%s: setup_window() - width = %d or height = %d invalid\n",
                  ZR_DEVNAME(zr), width, height);
            return -EINVAL;
      }

      fh->overlay_settings.x = x;
      fh->overlay_settings.y = y;
      fh->overlay_settings.width = width;
      fh->overlay_settings.height = height;
      fh->overlay_settings.clipcount = clipcount;

      /*
       * If an overlay is running, we have to switch it off
       * and switch it on again in order to get the new settings in effect.
       *
       * We also want to avoid that the overlay mask is written
       * when an overlay is running.
       */

      on = zr->v4l_overlay_active && !zr->v4l_memgrab_active &&
          zr->overlay_active != ZORAN_FREE &&
          fh->overlay_active != ZORAN_FREE;
      if (on)
            zr36057_overlay(zr, 0);

      /*
       *   Write the overlay mask if clips are wanted.
       *   We prefer a bitmap.
       */
      if (bitmap) {
            /* fake value - it just means we want clips */
            fh->overlay_settings.clipcount = 1;

            if (copy_from_user(fh->overlay_mask, bitmap,
                           (width * height + 7) / 8)) {
                  return -EFAULT;
            }
      } else if (clipcount > 0) {
            /* write our own bitmap from the clips */
            vcp = vmalloc(sizeof(struct video_clip) * (clipcount + 4));
            if (vcp == NULL) {
                  dprintk(1,
                        KERN_ERR
                        "%s: setup_window() - Alloc of clip mask failed\n",
                        ZR_DEVNAME(zr));
                  return -ENOMEM;
            }
            if (copy_from_user
                (vcp, clips, sizeof(struct video_clip) * clipcount)) {
                  vfree(vcp);
                  return -EFAULT;
            }
            write_overlay_mask(file, vcp, clipcount);
            vfree(vcp);
      }

      fh->overlay_settings.is_set = 1;
      if (fh->overlay_active != ZORAN_FREE &&
          zr->overlay_active != ZORAN_FREE)
            zr->overlay_settings = fh->overlay_settings;

      if (on)
            zr36057_overlay(zr, 1);

      /* Make sure the changes come into effect */
      return wait_grab_pending(zr);
}

static int
setup_overlay (struct file *file,
             int          on)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;

      /* If there is nothing to do, return immediatly */
      if ((on && fh->overlay_active != ZORAN_FREE) ||
          (!on && fh->overlay_active == ZORAN_FREE))
            return 0;

      /* check whether we're touching someone else's overlay */
      if (on && zr->overlay_active != ZORAN_FREE &&
          fh->overlay_active == ZORAN_FREE) {
            dprintk(1,
                  KERN_ERR
                  "%s: setup_overlay() - overlay is already active for another session\n",
                  ZR_DEVNAME(zr));
            return -EBUSY;
      }
      if (!on && zr->overlay_active != ZORAN_FREE &&
          fh->overlay_active == ZORAN_FREE) {
            dprintk(1,
                  KERN_ERR
                  "%s: setup_overlay() - you cannot cancel someone else's session\n",
                  ZR_DEVNAME(zr));
            return -EPERM;
      }

      if (on == 0) {
            zr->overlay_active = fh->overlay_active = ZORAN_FREE;
            zr->v4l_overlay_active = 0;
            /* When a grab is running, the video simply
             * won't be switched on any more */
            if (!zr->v4l_memgrab_active)
                  zr36057_overlay(zr, 0);
            zr->overlay_mask = NULL;
      } else {
            if (!zr->buffer.base || !fh->overlay_settings.is_set) {
                  dprintk(1,
                        KERN_ERR
                        "%s: setup_overlay() - buffer or window not set\n",
                        ZR_DEVNAME(zr));
                  return -EINVAL;
            }
            if (!fh->overlay_settings.format) {
                  dprintk(1,
                        KERN_ERR
                        "%s: setup_overlay() - no overlay format set\n",
                        ZR_DEVNAME(zr));
                  return -EINVAL;
            }
            zr->overlay_active = fh->overlay_active = ZORAN_LOCKED;
            zr->v4l_overlay_active = 1;
            zr->overlay_mask = fh->overlay_mask;
            zr->overlay_settings = fh->overlay_settings;
            if (!zr->v4l_memgrab_active)
                  zr36057_overlay(zr, 1);
            /* When a grab is running, the video will be
             * switched on when grab is finished */
      }

      /* Make sure the changes come into effect */
      return wait_grab_pending(zr);
}

#ifdef CONFIG_VIDEO_V4L2
      /* get the status of a buffer in the clients buffer queue */
static int
zoran_v4l2_buffer_status (struct file        *file,
                    struct v4l2_buffer *buf,
                    int                 num)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;

      buf->flags = V4L2_BUF_FLAG_MAPPED;

      switch (fh->map_mode) {
      case ZORAN_MAP_MODE_RAW:

            /* check range */
            if (num < 0 || num >= fh->v4l_buffers.num_buffers ||
                !fh->v4l_buffers.allocated) {
                  dprintk(1,
                        KERN_ERR
                        "%s: v4l2_buffer_status() - wrong number or buffers not allocated\n",
                        ZR_DEVNAME(zr));
                  return -EINVAL;
            }

            buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
            buf->length = fh->v4l_buffers.buffer_size;

            /* get buffer */
            buf->bytesused = fh->v4l_buffers.buffer[num].bs.length;
            if (fh->v4l_buffers.buffer[num].state == BUZ_STATE_DONE ||
                fh->v4l_buffers.buffer[num].state == BUZ_STATE_USER) {
                  buf->sequence = fh->v4l_buffers.buffer[num].bs.seq;
                  buf->flags |= V4L2_BUF_FLAG_DONE;
                  buf->timestamp =
                      fh->v4l_buffers.buffer[num].bs.timestamp;
            } else {
                  buf->flags |= V4L2_BUF_FLAG_QUEUED;
            }

            if (fh->v4l_settings.height <= BUZ_MAX_HEIGHT / 2)
                  buf->field = V4L2_FIELD_TOP;
            else
                  buf->field = V4L2_FIELD_INTERLACED;

            break;

      case ZORAN_MAP_MODE_JPG_REC:
      case ZORAN_MAP_MODE_JPG_PLAY:

            /* check range */
            if (num < 0 || num >= fh->jpg_buffers.num_buffers ||
                !fh->jpg_buffers.allocated) {
                  dprintk(1,
                        KERN_ERR
                        "%s: v4l2_buffer_status() - wrong number or buffers not allocated\n",
                        ZR_DEVNAME(zr));
                  return -EINVAL;
            }

            buf->type = (fh->map_mode == ZORAN_MAP_MODE_JPG_REC) ?
                        V4L2_BUF_TYPE_VIDEO_CAPTURE :
                        V4L2_BUF_TYPE_VIDEO_OUTPUT;
            buf->length = fh->jpg_buffers.buffer_size;

            /* these variables are only written after frame has been captured */
            if (fh->jpg_buffers.buffer[num].state == BUZ_STATE_DONE ||
                fh->jpg_buffers.buffer[num].state == BUZ_STATE_USER) {
                  buf->sequence = fh->jpg_buffers.buffer[num].bs.seq;
                  buf->timestamp =
                      fh->jpg_buffers.buffer[num].bs.timestamp;
                  buf->bytesused =
                      fh->jpg_buffers.buffer[num].bs.length;
                  buf->flags |= V4L2_BUF_FLAG_DONE;
            } else {
                  buf->flags |= V4L2_BUF_FLAG_QUEUED;
            }

            /* which fields are these? */
            if (fh->jpg_settings.TmpDcm != 1)
                  buf->field =
                      fh->jpg_settings.
                      odd_even ? V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
            else
                  buf->field =
                      fh->jpg_settings.
                      odd_even ? V4L2_FIELD_SEQ_TB :
                      V4L2_FIELD_SEQ_BT;

            break;

      default:

            dprintk(5,
                  KERN_ERR
                  "%s: v4l2_buffer_status() - invalid buffer type|map_mode (%d|%d)\n",
                  ZR_DEVNAME(zr), buf->type, fh->map_mode);
            return -EINVAL;
      }

      buf->memory = V4L2_MEMORY_MMAP;
      buf->index = num;
      buf->m.offset = buf->length * num;

      return 0;
}
#endif

static int
zoran_set_norm (struct zoran *zr,
            int           norm) /* VIDEO_MODE_* */
{
      int norm_encoder, on;

      if (zr->v4l_buffers.active != ZORAN_FREE ||
          zr->jpg_buffers.active != ZORAN_FREE) {
            dprintk(1,
                  KERN_WARNING
                  "%s: set_norm() called while in playback/capture mode\n",
                  ZR_DEVNAME(zr));
            return -EBUSY;
      }

      if (lock_norm && norm != zr->norm) {
            if (lock_norm > 1) {
                  dprintk(1,
                        KERN_WARNING
                        "%s: set_norm() - TV standard is locked, can not switch norm\n",
                        ZR_DEVNAME(zr));
                  return -EPERM;
            } else {
                  dprintk(1,
                        KERN_WARNING
                        "%s: set_norm() - TV standard is locked, norm was not changed\n",
                        ZR_DEVNAME(zr));
                  norm = zr->norm;
            }
      }

      if (norm != VIDEO_MODE_AUTO &&
          (norm < 0 || norm >= zr->card.norms ||
           !zr->card.tvn[norm])) {
            dprintk(1,
                  KERN_ERR "%s: set_norm() - unsupported norm %d\n",
                  ZR_DEVNAME(zr), norm);
            return -EINVAL;
      }

      if (norm == VIDEO_MODE_AUTO) {
            int status;

            /* if we have autodetect, ... */
            struct video_decoder_capability caps;
            decoder_command(zr, DECODER_GET_CAPABILITIES, &caps);
            if (!(caps.flags & VIDEO_DECODER_AUTO)) {
                  dprintk(1, KERN_ERR "%s: norm=auto unsupported\n",
                        ZR_DEVNAME(zr));
                  return -EINVAL;
            }

            decoder_command(zr, DECODER_SET_NORM, &norm);

            /* let changes come into effect */
            ssleep(2);

            decoder_command(zr, DECODER_GET_STATUS, &status);
            if (!(status & DECODER_STATUS_GOOD)) {
                  dprintk(1,
                        KERN_ERR
                        "%s: set_norm() - no norm detected\n",
                        ZR_DEVNAME(zr));
                  /* reset norm */
                  decoder_command(zr, DECODER_SET_NORM, &zr->norm);
                  return -EIO;
            }

            if (status & DECODER_STATUS_NTSC)
                  norm = VIDEO_MODE_NTSC;
            else if (status & DECODER_STATUS_SECAM)
                  norm = VIDEO_MODE_SECAM;
            else
                  norm = VIDEO_MODE_PAL;
      }
      zr->timing = zr->card.tvn[norm];
      norm_encoder = norm;

      /* We switch overlay off and on since a change in the
       * norm needs different VFE settings */
      on = zr->overlay_active && !zr->v4l_memgrab_active;
      if (on)
            zr36057_overlay(zr, 0);

      decoder_command(zr, DECODER_SET_NORM, &norm);
      encoder_command(zr, ENCODER_SET_NORM, &norm_encoder);

      if (on)
            zr36057_overlay(zr, 1);

      /* Make sure the changes come into effect */
      zr->norm = norm;

      return 0;
}

static int
zoran_set_input (struct zoran *zr,
             int           input)
{
      int realinput;

      if (input == zr->input) {
            return 0;
      }

      if (zr->v4l_buffers.active != ZORAN_FREE ||
          zr->jpg_buffers.active != ZORAN_FREE) {
            dprintk(1,
                  KERN_WARNING
                  "%s: set_input() called while in playback/capture mode\n",
                  ZR_DEVNAME(zr));
            return -EBUSY;
      }

      if (input < 0 || input >= zr->card.inputs) {
            dprintk(1,
                  KERN_ERR
                  "%s: set_input() - unnsupported input %d\n",
                  ZR_DEVNAME(zr), input);
            return -EINVAL;
      }

      realinput = zr->card.input[input].muxsel;
      zr->input = input;

      decoder_command(zr, DECODER_SET_INPUT, &realinput);

      return 0;
}

/*
 *   ioctl routine
 */

static int
zoran_do_ioctl (struct inode *inode,
            struct file  *file,
            unsigned int  cmd,
            void         *arg)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      /* CAREFUL: used in multiple places here */
      struct zoran_jpg_settings settings;

      /* we might have older buffers lying around... We don't want
       * to wait, but we do want to try cleaning them up ASAP. So
       * we try to obtain the lock and free them. If that fails, we
       * don't do anything and wait for the next turn. In the end,
       * zoran_close() or a new allocation will still free them...
       * This is just a 'the sooner the better' extra 'feature'
       *
       * We don't free the buffers right on munmap() because that
       * causes oopses (kfree() inside munmap() oopses for no
       * apparent reason - it's also not reproduceable in any way,
       * but moving the free code outside the munmap() handler fixes
       * all this... If someone knows why, please explain me (Ronald)
       */
      if (mutex_trylock(&zr->resource_lock)) {
            /* we obtained it! Let's try to free some things */
            if (fh->jpg_buffers.ready_to_be_freed)
                  jpg_fbuffer_free(file);
            if (fh->v4l_buffers.ready_to_be_freed)
                  v4l_fbuffer_free(file);

            mutex_unlock(&zr->resource_lock);
      }

      switch (cmd) {

      case VIDIOCGCAP:
      {
            struct video_capability *vcap = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOCGCAP\n", ZR_DEVNAME(zr));

            memset(vcap, 0, sizeof(struct video_capability));
            strncpy(vcap->name, ZR_DEVNAME(zr), sizeof(vcap->name)-1);
            vcap->type = ZORAN_VID_TYPE;

            vcap->channels = zr->card.inputs;
            vcap->audios = 0;
            mutex_lock(&zr->resource_lock);
            vcap->maxwidth = BUZ_MAX_WIDTH;
            vcap->maxheight = BUZ_MAX_HEIGHT;
            vcap->minwidth = BUZ_MIN_WIDTH;
            vcap->minheight = BUZ_MIN_HEIGHT;
            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOCGCHAN:
      {
            struct video_channel *vchan = arg;
            int channel = vchan->channel;

            dprintk(3, KERN_DEBUG "%s: VIDIOCGCHAN - channel=%d\n",
                  ZR_DEVNAME(zr), vchan->channel);

            memset(vchan, 0, sizeof(struct video_channel));
            if (channel > zr->card.inputs || channel < 0) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOCGCHAN on not existing channel %d\n",
                        ZR_DEVNAME(zr), channel);
                  return -EINVAL;
            }

            strcpy(vchan->name, zr->card.input[channel].name);

            vchan->tuners = 0;
            vchan->flags = 0;
            vchan->type = VIDEO_TYPE_CAMERA;
            mutex_lock(&zr->resource_lock);
            vchan->norm = zr->norm;
            mutex_unlock(&zr->resource_lock);
            vchan->channel = channel;

            return 0;
      }
            break;

            /* RJ: the documentation at http://roadrunner.swansea.linux.org.uk/v4lapi.shtml says:
             *
             * * "The VIDIOCSCHAN ioctl takes an integer argument and switches the capture to this input."
             * *                                 ^^^^^^^
             * * The famos BTTV driver has it implemented with a struct video_channel argument
             * * and we follow it for compatibility reasons
             * *
             * * BTW: this is the only way the user can set the norm!
             */

      case VIDIOCSCHAN:
      {
            struct video_channel *vchan = arg;
            int res;

            dprintk(3,
                  KERN_DEBUG
                  "%s: VIDIOCSCHAN - channel=%d, norm=%d\n",
                  ZR_DEVNAME(zr), vchan->channel, vchan->norm);

            mutex_lock(&zr->resource_lock);
            if ((res = zoran_set_input(zr, vchan->channel)))
                  goto schan_unlock_and_return;
            if ((res = zoran_set_norm(zr, vchan->norm)))
                  goto schan_unlock_and_return;

            /* Make sure the changes come into effect */
            res = wait_grab_pending(zr);
      schan_unlock_and_return:
            mutex_unlock(&zr->resource_lock);
            return res;
      }
            break;

      case VIDIOCGPICT:
      {
            struct video_picture *vpict = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOCGPICT\n", ZR_DEVNAME(zr));

            memset(vpict, 0, sizeof(struct video_picture));
            mutex_lock(&zr->resource_lock);
            vpict->hue = zr->hue;
            vpict->brightness = zr->brightness;
            vpict->contrast = zr->contrast;
            vpict->colour = zr->saturation;
            if (fh->overlay_settings.format) {
                  vpict->depth = fh->overlay_settings.format->depth;
                  vpict->palette = fh->overlay_settings.format->palette;
            } else {
                  vpict->depth = 0;
            }
            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOCSPICT:
      {
            struct video_picture *vpict = arg;
            int i;

            dprintk(3,
                  KERN_DEBUG
                  "%s: VIDIOCSPICT - bri=%d, hue=%d, col=%d, con=%d, dep=%d, pal=%d\n",
                  ZR_DEVNAME(zr), vpict->brightness, vpict->hue,
                  vpict->colour, vpict->contrast, vpict->depth,
                  vpict->palette);

            for (i = 0; i < NUM_FORMATS; i++) {
                  const struct zoran_format *fmt = &zoran_formats[i];

                  if (fmt->palette != -1 &&
                      fmt->flags & ZORAN_FORMAT_OVERLAY &&
                      fmt->palette == vpict->palette &&
                      fmt->depth == vpict->depth)
                        break;
            }
            if (i == NUM_FORMATS) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOCSPICT - Invalid palette %d\n",
                        ZR_DEVNAME(zr), vpict->palette);
                  return -EINVAL;
            }

            mutex_lock(&zr->resource_lock);

            decoder_command(zr, DECODER_SET_PICTURE, vpict);

            zr->hue = vpict->hue;
            zr->contrast = vpict->contrast;
            zr->saturation = vpict->colour;
            zr->brightness = vpict->brightness;

            fh->overlay_settings.format = &zoran_formats[i];

            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOCCAPTURE:
      {
            int *on = arg, res;

            dprintk(3, KERN_DEBUG "%s: VIDIOCCAPTURE - on=%d\n",
                  ZR_DEVNAME(zr), *on);

            mutex_lock(&zr->resource_lock);
            res = setup_overlay(file, *on);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOCGWIN:
      {
            struct video_window *vwin = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOCGWIN\n", ZR_DEVNAME(zr));

            memset(vwin, 0, sizeof(struct video_window));
            mutex_lock(&zr->resource_lock);
            vwin->x = fh->overlay_settings.x;
            vwin->y = fh->overlay_settings.y;
            vwin->width = fh->overlay_settings.width;
            vwin->height = fh->overlay_settings.height;
            mutex_unlock(&zr->resource_lock);
            vwin->clipcount = 0;
            return 0;
      }
            break;

      case VIDIOCSWIN:
      {
            struct video_window *vwin = arg;
            int res;

            dprintk(3,
                  KERN_DEBUG
                  "%s: VIDIOCSWIN - x=%d, y=%d, w=%d, h=%d, clipcount=%d\n",
                  ZR_DEVNAME(zr), vwin->x, vwin->y, vwin->width,
                  vwin->height, vwin->clipcount);

            mutex_lock(&zr->resource_lock);
            res =
                setup_window(file, vwin->x, vwin->y, vwin->width,
                         vwin->height, vwin->clips,
                         vwin->clipcount, NULL);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOCGFBUF:
      {
            struct video_buffer *vbuf = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOCGFBUF\n", ZR_DEVNAME(zr));

            mutex_lock(&zr->resource_lock);
            *vbuf = zr->buffer;
            mutex_unlock(&zr->resource_lock);
            return 0;
      }
            break;

      case VIDIOCSFBUF:
      {
            struct video_buffer *vbuf = arg;
            int i, res = 0;

            dprintk(3,
                  KERN_DEBUG
                  "%s: VIDIOCSFBUF - base=%p, w=%d, h=%d, depth=%d, bpl=%d\n",
                  ZR_DEVNAME(zr), vbuf->base, vbuf->width,
                  vbuf->height, vbuf->depth, vbuf->bytesperline);

            for (i = 0; i < NUM_FORMATS; i++)
                  if (zoran_formats[i].depth == vbuf->depth)
                        break;
            if (i == NUM_FORMATS) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOCSFBUF - invalid fbuf depth %d\n",
                        ZR_DEVNAME(zr), vbuf->depth);
                  return -EINVAL;
            }

            mutex_lock(&zr->resource_lock);
            res =
                setup_fbuffer(file, vbuf->base, &zoran_formats[i],
                          vbuf->width, vbuf->height,
                          vbuf->bytesperline);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOCSYNC:
      {
            int *frame = arg, res;

            dprintk(3, KERN_DEBUG "%s: VIDIOCSYNC - frame=%d\n",
                  ZR_DEVNAME(zr), *frame);

            mutex_lock(&zr->resource_lock);
            res = v4l_sync(file, *frame);
            mutex_unlock(&zr->resource_lock);
            if (!res)
                  zr->v4l_sync_tail++;
            return res;
      }
            break;

      case VIDIOCMCAPTURE:
      {
            struct video_mmap *vmap = arg;
            int res;

            dprintk(3,
                  KERN_DEBUG
                  "%s: VIDIOCMCAPTURE - frame=%d, geom=%dx%d, fmt=%d\n",
                  ZR_DEVNAME(zr), vmap->frame, vmap->width, vmap->height,
                  vmap->format);

            mutex_lock(&zr->resource_lock);
            res = v4l_grab(file, vmap);
            mutex_unlock(&zr->resource_lock);
            return res;
      }
            break;

      case VIDIOCGMBUF:
      {
            struct video_mbuf *vmbuf = arg;
            int i, res = 0;

            dprintk(3, KERN_DEBUG "%s: VIDIOCGMBUF\n", ZR_DEVNAME(zr));

            vmbuf->size =
                fh->v4l_buffers.num_buffers *
                fh->v4l_buffers.buffer_size;
            vmbuf->frames = fh->v4l_buffers.num_buffers;
            for (i = 0; i < vmbuf->frames; i++) {
                  vmbuf->offsets[i] =
                      i * fh->v4l_buffers.buffer_size;
            }

            mutex_lock(&zr->resource_lock);

            if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOCGMBUF - buffers already allocated\n",
                        ZR_DEVNAME(zr));
                  res = -EINVAL;
                  goto v4l1reqbuf_unlock_and_return;
            }

            if (v4l_fbuffer_alloc(file)) {
                  res = -ENOMEM;
                  goto v4l1reqbuf_unlock_and_return;
            }

            /* The next mmap will map the V4L buffers */
            fh->map_mode = ZORAN_MAP_MODE_RAW;
      v4l1reqbuf_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOCGUNIT:
      {
            struct video_unit *vunit = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOCGUNIT\n", ZR_DEVNAME(zr));

            vunit->video = zr->video_dev->minor;
            vunit->vbi = VIDEO_NO_UNIT;
            vunit->radio = VIDEO_NO_UNIT;
            vunit->audio = VIDEO_NO_UNIT;
            vunit->teletext = VIDEO_NO_UNIT;

            return 0;
      }
            break;

            /*
             * RJ: In principal we could support subcaptures for V4L grabbing.
             *     Not even the famous BTTV driver has them, however.
             *     If there should be a strong demand, one could consider
             *     to implement them.
             */
      case VIDIOCGCAPTURE:
      {
            dprintk(3, KERN_ERR "%s: VIDIOCGCAPTURE not supported\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }
            break;

      case VIDIOCSCAPTURE:
      {
            dprintk(3, KERN_ERR "%s: VIDIOCSCAPTURE not supported\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }
            break;

      case BUZIOC_G_PARAMS:
      {
            struct zoran_params *bparams = arg;

            dprintk(3, KERN_DEBUG "%s: BUZIOC_G_PARAMS\n", ZR_DEVNAME(zr));

            memset(bparams, 0, sizeof(struct zoran_params));
            bparams->major_version = MAJOR_VERSION;
            bparams->minor_version = MINOR_VERSION;

            mutex_lock(&zr->resource_lock);

            bparams->norm = zr->norm;
            bparams->input = zr->input;

            bparams->decimation = fh->jpg_settings.decimation;
            bparams->HorDcm = fh->jpg_settings.HorDcm;
            bparams->VerDcm = fh->jpg_settings.VerDcm;
            bparams->TmpDcm = fh->jpg_settings.TmpDcm;
            bparams->field_per_buff = fh->jpg_settings.field_per_buff;
            bparams->img_x = fh->jpg_settings.img_x;
            bparams->img_y = fh->jpg_settings.img_y;
            bparams->img_width = fh->jpg_settings.img_width;
            bparams->img_height = fh->jpg_settings.img_height;
            bparams->odd_even = fh->jpg_settings.odd_even;

            bparams->quality = fh->jpg_settings.jpg_comp.quality;
            bparams->APPn = fh->jpg_settings.jpg_comp.APPn;
            bparams->APP_len = fh->jpg_settings.jpg_comp.APP_len;
            memcpy(bparams->APP_data,
                   fh->jpg_settings.jpg_comp.APP_data,
                   sizeof(bparams->APP_data));
            bparams->COM_len = zr->jpg_settings.jpg_comp.COM_len;
            memcpy(bparams->COM_data,
                   fh->jpg_settings.jpg_comp.COM_data,
                   sizeof(bparams->COM_data));
            bparams->jpeg_markers =
                fh->jpg_settings.jpg_comp.jpeg_markers;

            mutex_unlock(&zr->resource_lock);

            bparams->VFIFO_FB = 0;

            return 0;
      }
            break;

      case BUZIOC_S_PARAMS:
      {
            struct zoran_params *bparams = arg;
            int res = 0;

            dprintk(3, KERN_DEBUG "%s: BUZIOC_S_PARAMS\n", ZR_DEVNAME(zr));

            settings.decimation = bparams->decimation;
            settings.HorDcm = bparams->HorDcm;
            settings.VerDcm = bparams->VerDcm;
            settings.TmpDcm = bparams->TmpDcm;
            settings.field_per_buff = bparams->field_per_buff;
            settings.img_x = bparams->img_x;
            settings.img_y = bparams->img_y;
            settings.img_width = bparams->img_width;
            settings.img_height = bparams->img_height;
            settings.odd_even = bparams->odd_even;

            settings.jpg_comp.quality = bparams->quality;
            settings.jpg_comp.APPn = bparams->APPn;
            settings.jpg_comp.APP_len = bparams->APP_len;
            memcpy(settings.jpg_comp.APP_data, bparams->APP_data,
                   sizeof(bparams->APP_data));
            settings.jpg_comp.COM_len = bparams->COM_len;
            memcpy(settings.jpg_comp.COM_data, bparams->COM_data,
                   sizeof(bparams->COM_data));
            settings.jpg_comp.jpeg_markers = bparams->jpeg_markers;

            mutex_lock(&zr->resource_lock);

            if (zr->codec_mode != BUZ_MODE_IDLE) {
                  dprintk(1,
                        KERN_ERR
                        "%s: BUZIOC_S_PARAMS called, but Buz in capture/playback mode\n",
                        ZR_DEVNAME(zr));
                  res = -EINVAL;
                  goto sparams_unlock_and_return;
            }

            /* Check the params first before overwriting our
             * nternal values */
            if (zoran_check_jpg_settings(zr, &settings)) {
                  res = -EINVAL;
                  goto sparams_unlock_and_return;
            }

            fh->jpg_settings = settings;
      sparams_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case BUZIOC_REQBUFS:
      {
            struct zoran_requestbuffers *breq = arg;
            int res = 0;

            dprintk(3,
                  KERN_DEBUG
                  "%s: BUZIOC_REQBUFS - count=%lu, size=%lu\n",
                  ZR_DEVNAME(zr), breq->count, breq->size);

            /* Enforce reasonable lower and upper limits */
            if (breq->count < 4)
                  breq->count = 4;  /* Could be choosen smaller */
            if (breq->count > jpg_nbufs)
                  breq->count = jpg_nbufs;
            breq->size = PAGE_ALIGN(breq->size);
            if (breq->size < 8192)
                  breq->size = 8192;      /* Arbitrary */
            /* breq->size is limited by 1 page for the stat_com
             * tables to a Maximum of 2 MB */
            if (breq->size > jpg_bufsize)
                  breq->size = jpg_bufsize;
            if (fh->jpg_buffers.need_contiguous &&
                breq->size > MAX_KMALLOC_MEM)
                  breq->size = MAX_KMALLOC_MEM;

            mutex_lock(&zr->resource_lock);

            if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
                  dprintk(1,
                        KERN_ERR
                        "%s: BUZIOC_REQBUFS - buffers allready allocated\n",
                        ZR_DEVNAME(zr));
                  res = -EBUSY;
                  goto jpgreqbuf_unlock_and_return;
            }

            fh->jpg_buffers.num_buffers = breq->count;
            fh->jpg_buffers.buffer_size = breq->size;

            if (jpg_fbuffer_alloc(file)) {
                  res = -ENOMEM;
                  goto jpgreqbuf_unlock_and_return;
            }

            /* The next mmap will map the MJPEG buffers - could
             * also be *_PLAY, but it doesn't matter here */
            fh->map_mode = ZORAN_MAP_MODE_JPG_REC;
      jpgreqbuf_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case BUZIOC_QBUF_CAPT:
      {
            int *frame = arg, res;

            dprintk(3, KERN_DEBUG "%s: BUZIOC_QBUF_CAPT - frame=%d\n",
                  ZR_DEVNAME(zr), *frame);

            mutex_lock(&zr->resource_lock);
            res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_COMPRESS);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case BUZIOC_QBUF_PLAY:
      {
            int *frame = arg, res;

            dprintk(3, KERN_DEBUG "%s: BUZIOC_QBUF_PLAY - frame=%d\n",
                  ZR_DEVNAME(zr), *frame);

            mutex_lock(&zr->resource_lock);
            res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_DECOMPRESS);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case BUZIOC_SYNC:
      {
            struct zoran_sync *bsync = arg;
            int res;

            dprintk(3, KERN_DEBUG "%s: BUZIOC_SYNC\n", ZR_DEVNAME(zr));

            mutex_lock(&zr->resource_lock);
            res = jpg_sync(file, bsync);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case BUZIOC_G_STATUS:
      {
            struct zoran_status *bstat = arg;
            int norm, input, status, res = 0;

            dprintk(3, KERN_DEBUG "%s: BUZIOC_G_STATUS\n", ZR_DEVNAME(zr));

            if (zr->codec_mode != BUZ_MODE_IDLE) {
                  dprintk(1,
                        KERN_ERR
                        "%s: BUZIOC_G_STATUS called but Buz in capture/playback mode\n",
                        ZR_DEVNAME(zr));
                  return -EINVAL;
            }

            input = zr->card.input[bstat->input].muxsel;
            norm = VIDEO_MODE_AUTO;

            mutex_lock(&zr->resource_lock);

            if (zr->codec_mode != BUZ_MODE_IDLE) {
                  dprintk(1,
                        KERN_ERR
                        "%s: BUZIOC_G_STATUS called, but Buz in capture/playback mode\n",
                        ZR_DEVNAME(zr));
                  res = -EINVAL;
                  goto gstat_unlock_and_return;
            }

            decoder_command(zr, DECODER_SET_INPUT, &input);
            decoder_command(zr, DECODER_SET_NORM, &norm);

            /* sleep 1 second */
            ssleep(1);

            /* Get status of video decoder */
            decoder_command(zr, DECODER_GET_STATUS, &status);

            /* restore previous input and norm */
            input = zr->card.input[zr->input].muxsel;
            decoder_command(zr, DECODER_SET_INPUT, &input);
            decoder_command(zr, DECODER_SET_NORM, &zr->norm);
      gstat_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            if (!res) {
                  bstat->signal =
                      (status & DECODER_STATUS_GOOD) ? 1 : 0;
                  if (status & DECODER_STATUS_NTSC)
                        bstat->norm = VIDEO_MODE_NTSC;
                  else if (status & DECODER_STATUS_SECAM)
                        bstat->norm = VIDEO_MODE_SECAM;
                  else
                        bstat->norm = VIDEO_MODE_PAL;

                  bstat->color =
                      (status & DECODER_STATUS_COLOR) ? 1 : 0;
            }

            return res;
      }
            break;

#ifdef CONFIG_VIDEO_V4L2

            /* The new video4linux2 capture interface - much nicer than video4linux1, since
             * it allows for integrating the JPEG capturing calls inside standard v4l2
             */

      case VIDIOC_QUERYCAP:
      {
            struct v4l2_capability *cap = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_QUERYCAP\n", ZR_DEVNAME(zr));

            memset(cap, 0, sizeof(*cap));
            strncpy(cap->card, ZR_DEVNAME(zr), sizeof(cap->card)-1);
            strncpy(cap->driver, "zoran", sizeof(cap->driver)-1);
            snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
                   pci_name(zr->pci_dev));
            cap->version =
                KERNEL_VERSION(MAJOR_VERSION, MINOR_VERSION,
                           RELEASE_VERSION);
            cap->capabilities = ZORAN_V4L2_VID_FLAGS;

            return 0;
      }
            break;

      case VIDIOC_ENUM_FMT:
      {
            struct v4l2_fmtdesc *fmt = arg;
            int index = fmt->index, num = -1, i, flag = 0, type =
                fmt->type;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUM_FMT - index=%d\n",
                  ZR_DEVNAME(zr), fmt->index);

            switch (fmt->type) {
            case V4L2_BUF_TYPE_VIDEO_CAPTURE:
                  flag = ZORAN_FORMAT_CAPTURE;
                  break;
            case V4L2_BUF_TYPE_VIDEO_OUTPUT:
                  flag = ZORAN_FORMAT_PLAYBACK;
                  break;
            case V4L2_BUF_TYPE_VIDEO_OVERLAY:
                  flag = ZORAN_FORMAT_OVERLAY;
                  break;
            default:
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_ENUM_FMT - unknown type %d\n",
                        ZR_DEVNAME(zr), fmt->type);
                  return -EINVAL;
            }

            for (i = 0; i < NUM_FORMATS; i++) {
                  if (zoran_formats[i].flags & flag)
                        num++;
                  if (num == fmt->index)
                        break;
            }
            if (fmt->index < 0 /* late, but not too late */  ||
                i == NUM_FORMATS)
                  return -EINVAL;

            memset(fmt, 0, sizeof(*fmt));
            fmt->index = index;
            fmt->type = type;
            strncpy(fmt->description, zoran_formats[i].name, sizeof(fmt->description)-1);
            fmt->pixelformat = zoran_formats[i].fourcc;
            if (zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED)
                  fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;

            return 0;
      }
            break;

      case VIDIOC_G_FMT:
      {
            struct v4l2_format *fmt = arg;
            int type = fmt->type;

            dprintk(5, KERN_DEBUG "%s: VIDIOC_G_FMT\n", ZR_DEVNAME(zr));

            memset(fmt, 0, sizeof(*fmt));
            fmt->type = type;

            switch (fmt->type) {
            case V4L2_BUF_TYPE_VIDEO_OVERLAY:

                  mutex_lock(&zr->resource_lock);

                  fmt->fmt.win.w.left = fh->overlay_settings.x;
                  fmt->fmt.win.w.top = fh->overlay_settings.y;
                  fmt->fmt.win.w.width = fh->overlay_settings.width;
                  fmt->fmt.win.w.height =
                      fh->overlay_settings.height;
                  if (fh->overlay_settings.width * 2 >
                      BUZ_MAX_HEIGHT)
                        fmt->fmt.win.field = V4L2_FIELD_INTERLACED;
                  else
                        fmt->fmt.win.field = V4L2_FIELD_TOP;

                  mutex_unlock(&zr->resource_lock);

                  break;

            case V4L2_BUF_TYPE_VIDEO_CAPTURE:
            case V4L2_BUF_TYPE_VIDEO_OUTPUT:

                  mutex_lock(&zr->resource_lock);

                  if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
                      fh->map_mode == ZORAN_MAP_MODE_RAW) {

                        fmt->fmt.pix.width =
                            fh->v4l_settings.width;
                        fmt->fmt.pix.height =
                            fh->v4l_settings.height;
                        fmt->fmt.pix.sizeimage =
                            fh->v4l_settings.bytesperline *
                            fh->v4l_settings.height;
                        fmt->fmt.pix.pixelformat =
                            fh->v4l_settings.format->fourcc;
                        fmt->fmt.pix.colorspace =
                            fh->v4l_settings.format->colorspace;
                        fmt->fmt.pix.bytesperline = 0;
                        if (BUZ_MAX_HEIGHT <
                            (fh->v4l_settings.height * 2))
                              fmt->fmt.pix.field =
                                  V4L2_FIELD_INTERLACED;
                        else
                              fmt->fmt.pix.field =
                                  V4L2_FIELD_TOP;

                  } else {

                        fmt->fmt.pix.width =
                            fh->jpg_settings.img_width /
                            fh->jpg_settings.HorDcm;
                        fmt->fmt.pix.height =
                            fh->jpg_settings.img_height /
                            (fh->jpg_settings.VerDcm *
                             fh->jpg_settings.TmpDcm);
                        fmt->fmt.pix.sizeimage =
                            zoran_v4l2_calc_bufsize(&fh->
                                              jpg_settings);
                        fmt->fmt.pix.pixelformat =
                            V4L2_PIX_FMT_MJPEG;
                        if (fh->jpg_settings.TmpDcm == 1)
                              fmt->fmt.pix.field =
                                  (fh->jpg_settings.
                                   odd_even ? V4L2_FIELD_SEQ_BT :
                                   V4L2_FIELD_SEQ_BT);
                        else
                              fmt->fmt.pix.field =
                                  (fh->jpg_settings.
                                   odd_even ? V4L2_FIELD_TOP :
                                   V4L2_FIELD_BOTTOM);

                        fmt->fmt.pix.bytesperline = 0;
                        fmt->fmt.pix.colorspace =
                            V4L2_COLORSPACE_SMPTE170M;
                  }

                  mutex_unlock(&zr->resource_lock);

                  break;

            default:
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_G_FMT - unsupported type %d\n",
                        ZR_DEVNAME(zr), fmt->type);
                  return -EINVAL;
            }
            return 0;
      }
            break;

      case VIDIOC_S_FMT:
      {
            struct v4l2_format *fmt = arg;
            int i, res = 0;
            __u32 printformat;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_S_FMT - type=%d, ",
                  ZR_DEVNAME(zr), fmt->type);

            switch (fmt->type) {
            case V4L2_BUF_TYPE_VIDEO_OVERLAY:

                  dprintk(3, "x=%d, y=%d, w=%d, h=%d, cnt=%d, map=0x%p\n",
                        fmt->fmt.win.w.left, fmt->fmt.win.w.top,
                        fmt->fmt.win.w.width,
                        fmt->fmt.win.w.height,
                        fmt->fmt.win.clipcount,
                        fmt->fmt.win.bitmap);
                  mutex_lock(&zr->resource_lock);
                  res =
                      setup_window(file, fmt->fmt.win.w.left,
                               fmt->fmt.win.w.top,
                               fmt->fmt.win.w.width,
                               fmt->fmt.win.w.height,
                               (struct video_clip __user *)
                                 fmt->fmt.win.clips,
                               fmt->fmt.win.clipcount,
                               fmt->fmt.win.bitmap);
                  mutex_unlock(&zr->resource_lock);
                  return res;
                  break;

            case V4L2_BUF_TYPE_VIDEO_CAPTURE:
            case V4L2_BUF_TYPE_VIDEO_OUTPUT:

                  printformat =
                      __cpu_to_le32(fmt->fmt.pix.pixelformat);
                  dprintk(3, "size=%dx%d, fmt=0x%x (%4.4s)\n",
                        fmt->fmt.pix.width, fmt->fmt.pix.height,
                        fmt->fmt.pix.pixelformat,
                        (char *) &printformat);

                  if (fmt->fmt.pix.bytesperline > 0) {
                        dprintk(5,
                              KERN_ERR "%s: bpl not supported\n",
                              ZR_DEVNAME(zr));
                        return -EINVAL;
                  }

                  /* we can be requested to do JPEG/raw playback/capture */
                  if (!
                      (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
                       (fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
                        fmt->fmt.pix.pixelformat ==
                        V4L2_PIX_FMT_MJPEG))) {
                        dprintk(1,
                              KERN_ERR
                              "%s: VIDIOC_S_FMT - unknown type %d/0x%x(%4.4s) combination\n",
                              ZR_DEVNAME(zr), fmt->type,
                              fmt->fmt.pix.pixelformat,
                              (char *) &printformat);
                        return -EINVAL;
                  }

                  if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG) {
                        mutex_lock(&zr->resource_lock);

                        settings = fh->jpg_settings;

                        if (fh->v4l_buffers.allocated ||
                            fh->jpg_buffers.allocated) {
                              dprintk(1,
                                    KERN_ERR
                                    "%s: VIDIOC_S_FMT - cannot change capture mode\n",
                                    ZR_DEVNAME(zr));
                              res = -EBUSY;
                              goto sfmtjpg_unlock_and_return;
                        }

                        /* we actually need to set 'real' parameters now */
                        if ((fmt->fmt.pix.height * 2) >
                            BUZ_MAX_HEIGHT)
                              settings.TmpDcm = 1;
                        else
                              settings.TmpDcm = 2;
                        settings.decimation = 0;
                        if (fmt->fmt.pix.height <=
                            fh->jpg_settings.img_height / 2)
                              settings.VerDcm = 2;
                        else
                              settings.VerDcm = 1;
                        if (fmt->fmt.pix.width <=
                            fh->jpg_settings.img_width / 4)
                              settings.HorDcm = 4;
                        else if (fmt->fmt.pix.width <=
                               fh->jpg_settings.img_width / 2)
                              settings.HorDcm = 2;
                        else
                              settings.HorDcm = 1;
                        if (settings.TmpDcm == 1)
                              settings.field_per_buff = 2;
                        else
                              settings.field_per_buff = 1;

                        /* check */
                        if ((res =
                             zoran_check_jpg_settings(zr,
                                                &settings)))
                              goto sfmtjpg_unlock_and_return;

                        /* it's ok, so set them */
                        fh->jpg_settings = settings;

                        /* tell the user what we actually did */
                        fmt->fmt.pix.width =
                            settings.img_width / settings.HorDcm;
                        fmt->fmt.pix.height =
                            settings.img_height * 2 /
                            (settings.TmpDcm * settings.VerDcm);
                        if (settings.TmpDcm == 1)
                              fmt->fmt.pix.field =
                                  (fh->jpg_settings.
                                   odd_even ? V4L2_FIELD_SEQ_TB :
                                   V4L2_FIELD_SEQ_BT);
                        else
                              fmt->fmt.pix.field =
                                  (fh->jpg_settings.
                                   odd_even ? V4L2_FIELD_TOP :
                                   V4L2_FIELD_BOTTOM);
                        fh->jpg_buffers.buffer_size =
                            zoran_v4l2_calc_bufsize(&fh->
                                              jpg_settings);
                        fmt->fmt.pix.sizeimage =
                            fh->jpg_buffers.buffer_size;

                        /* we hereby abuse this variable to show that
                         * we're gonna do mjpeg capture */
                        fh->map_mode =
                            (fmt->type ==
                             V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
                            ZORAN_MAP_MODE_JPG_REC :
                            ZORAN_MAP_MODE_JPG_PLAY;
                  sfmtjpg_unlock_and_return:
                        mutex_unlock(&zr->resource_lock);
                  } else {
                        for (i = 0; i < NUM_FORMATS; i++)
                              if (fmt->fmt.pix.pixelformat ==
                                  zoran_formats[i].fourcc)
                                    break;
                        if (i == NUM_FORMATS) {
                              dprintk(1,
                                    KERN_ERR
                                    "%s: VIDIOC_S_FMT - unknown/unsupported format 0x%x (%4.4s)\n",
                                    ZR_DEVNAME(zr),
                                    fmt->fmt.pix.pixelformat,
                                    (char *) &printformat);
                              return -EINVAL;
                        }
                        mutex_lock(&zr->resource_lock);
                        if (fh->jpg_buffers.allocated ||
                            (fh->v4l_buffers.allocated &&
                             fh->v4l_buffers.active !=
                             ZORAN_FREE)) {
                              dprintk(1,
                                    KERN_ERR
                                    "%s: VIDIOC_S_FMT - cannot change capture mode\n",
                                    ZR_DEVNAME(zr));
                              res = -EBUSY;
                              goto sfmtv4l_unlock_and_return;
                        }
                        if (fmt->fmt.pix.height > BUZ_MAX_HEIGHT)
                              fmt->fmt.pix.height =
                                  BUZ_MAX_HEIGHT;
                        if (fmt->fmt.pix.width > BUZ_MAX_WIDTH)
                              fmt->fmt.pix.width = BUZ_MAX_WIDTH;

                        if ((res =
                             zoran_v4l_set_format(file,
                                            fmt->fmt.pix.
                                            width,
                                            fmt->fmt.pix.
                                            height,
                                            &zoran_formats
                                            [i])))
                              goto sfmtv4l_unlock_and_return;

                        /* tell the user the
                         * results/missing stuff */
                        fmt->fmt.pix.sizeimage =
                              fh->v4l_settings.height *
                              fh->v4l_settings.bytesperline;
                        if (BUZ_MAX_HEIGHT <
                            (fh->v4l_settings.height * 2))
                              fmt->fmt.pix.field =
                                  V4L2_FIELD_INTERLACED;
                        else
                              fmt->fmt.pix.field =
                                  V4L2_FIELD_TOP;

                        fh->map_mode = ZORAN_MAP_MODE_RAW;
                  sfmtv4l_unlock_and_return:
                        mutex_unlock(&zr->resource_lock);
                  }

                  break;

            default:
                  dprintk(3, "unsupported\n");
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_S_FMT - unsupported type %d\n",
                        ZR_DEVNAME(zr), fmt->type);
                  return -EINVAL;
            }

            return res;
      }
            break;

      case VIDIOC_G_FBUF:
      {
            struct v4l2_framebuffer *fb = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_G_FBUF\n", ZR_DEVNAME(zr));

            memset(fb, 0, sizeof(*fb));
            mutex_lock(&zr->resource_lock);
            fb->base = zr->buffer.base;
            fb->fmt.width = zr->buffer.width;
            fb->fmt.height = zr->buffer.height;
            if (zr->overlay_settings.format) {
                  fb->fmt.pixelformat =
                        fh->overlay_settings.format->fourcc;
            }
            fb->fmt.bytesperline = zr->buffer.bytesperline;
            mutex_unlock(&zr->resource_lock);
            fb->fmt.colorspace = V4L2_COLORSPACE_SRGB;
            fb->fmt.field = V4L2_FIELD_INTERLACED;
            fb->flags = V4L2_FBUF_FLAG_OVERLAY;
            fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;

            return 0;
      }
            break;

      case VIDIOC_S_FBUF:
      {
            int i, res = 0;
            struct v4l2_framebuffer *fb = arg;
            __u32 printformat = __cpu_to_le32(fb->fmt.pixelformat);

            dprintk(3,
                  KERN_DEBUG
                  "%s: VIDIOC_S_FBUF - base=0x%p, size=%dx%d, bpl=%d, fmt=0x%x (%4.4s)\n",
                  ZR_DEVNAME(zr), fb->base, fb->fmt.width, fb->fmt.height,
                  fb->fmt.bytesperline, fb->fmt.pixelformat,
                  (char *) &printformat);

            for (i = 0; i < NUM_FORMATS; i++)
                  if (zoran_formats[i].fourcc == fb->fmt.pixelformat)
                        break;
            if (i == NUM_FORMATS) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_S_FBUF - format=0x%x (%4.4s) not allowed\n",
                        ZR_DEVNAME(zr), fb->fmt.pixelformat,
                        (char *) &printformat);
                  return -EINVAL;
            }

            mutex_lock(&zr->resource_lock);
            res =
                setup_fbuffer(file, fb->base, &zoran_formats[i],
                          fb->fmt.width, fb->fmt.height,
                          fb->fmt.bytesperline);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOC_OVERLAY:
      {
            int *on = arg, res;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_PREVIEW - on=%d\n",
                  ZR_DEVNAME(zr), *on);

            mutex_lock(&zr->resource_lock);
            res = setup_overlay(file, *on);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOC_REQBUFS:
      {
            struct v4l2_requestbuffers *req = arg;
            int res = 0;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_REQBUFS - type=%d\n",
                  ZR_DEVNAME(zr), req->type);

            if (req->memory != V4L2_MEMORY_MMAP) {
                  dprintk(1,
                        KERN_ERR
                        "%s: only MEMORY_MMAP capture is supported, not %d\n",
                        ZR_DEVNAME(zr), req->memory);
                  return -EINVAL;
            }

            mutex_lock(&zr->resource_lock);

            if (fh->v4l_buffers.allocated || fh->jpg_buffers.allocated) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_REQBUFS - buffers allready allocated\n",
                        ZR_DEVNAME(zr));
                  res = -EBUSY;
                  goto v4l2reqbuf_unlock_and_return;
            }

            if (fh->map_mode == ZORAN_MAP_MODE_RAW &&
                req->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {

                  /* control user input */
                  if (req->count < 2)
                        req->count = 2;
                  if (req->count > v4l_nbufs)
                        req->count = v4l_nbufs;
                  fh->v4l_buffers.num_buffers = req->count;

                  if (v4l_fbuffer_alloc(file)) {
                        res = -ENOMEM;
                        goto v4l2reqbuf_unlock_and_return;
                  }

                  /* The next mmap will map the V4L buffers */
                  fh->map_mode = ZORAN_MAP_MODE_RAW;

            } else if (fh->map_mode == ZORAN_MAP_MODE_JPG_REC ||
                     fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY) {

                  /* we need to calculate size ourselves now */
                  if (req->count < 4)
                        req->count = 4;
                  if (req->count > jpg_nbufs)
                        req->count = jpg_nbufs;
                  fh->jpg_buffers.num_buffers = req->count;
                  fh->jpg_buffers.buffer_size =
                      zoran_v4l2_calc_bufsize(&fh->jpg_settings);

                  if (jpg_fbuffer_alloc(file)) {
                        res = -ENOMEM;
                        goto v4l2reqbuf_unlock_and_return;
                  }

                  /* The next mmap will map the MJPEG buffers */
                  if (req->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
                        fh->map_mode = ZORAN_MAP_MODE_JPG_REC;
                  else
                        fh->map_mode = ZORAN_MAP_MODE_JPG_PLAY;

            } else {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_REQBUFS - unknown type %d\n",
                        ZR_DEVNAME(zr), req->type);
                  res = -EINVAL;
                  goto v4l2reqbuf_unlock_and_return;
            }
      v4l2reqbuf_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOC_QUERYBUF:
      {
            struct v4l2_buffer *buf = arg;
            __u32 type = buf->type;
            int index = buf->index, res;

            dprintk(3,
                  KERN_DEBUG
                  "%s: VIDIOC_QUERYBUF - index=%d, type=%d\n",
                  ZR_DEVNAME(zr), buf->index, buf->type);

            memset(buf, 0, sizeof(*buf));
            buf->type = type;
            buf->index = index;

            mutex_lock(&zr->resource_lock);
            res = zoran_v4l2_buffer_status(file, buf, buf->index);
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOC_QBUF:
      {
            struct v4l2_buffer *buf = arg;
            int res = 0, codec_mode, buf_type;

            dprintk(3,
                  KERN_DEBUG "%s: VIDIOC_QBUF - type=%d, index=%d\n",
                  ZR_DEVNAME(zr), buf->type, buf->index);

            mutex_lock(&zr->resource_lock);

            switch (fh->map_mode) {
            case ZORAN_MAP_MODE_RAW:
                  if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
                        dprintk(1,
                              KERN_ERR
                              "%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
                              ZR_DEVNAME(zr), buf->type, fh->map_mode);
                        res = -EINVAL;
                        goto qbuf_unlock_and_return;
                  }

                  res = zoran_v4l_queue_frame(file, buf->index);
                  if (res)
                        goto qbuf_unlock_and_return;
                  if (!zr->v4l_memgrab_active &&
                      fh->v4l_buffers.active == ZORAN_LOCKED)
                        zr36057_set_memgrab(zr, 1);
                  break;

            case ZORAN_MAP_MODE_JPG_REC:
            case ZORAN_MAP_MODE_JPG_PLAY:
                  if (fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY) {
                        buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
                        codec_mode = BUZ_MODE_MOTION_DECOMPRESS;
                  } else {
                        buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
                        codec_mode = BUZ_MODE_MOTION_COMPRESS;
                  }

                  if (buf->type != buf_type) {
                        dprintk(1,
                              KERN_ERR
                              "%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
                              ZR_DEVNAME(zr), buf->type, fh->map_mode);
                        res = -EINVAL;
                        goto qbuf_unlock_and_return;
                  }

                  res =
                      zoran_jpg_queue_frame(file, buf->index,
                                      codec_mode);
                  if (res != 0)
                        goto qbuf_unlock_and_return;
                  if (zr->codec_mode == BUZ_MODE_IDLE &&
                      fh->jpg_buffers.active == ZORAN_LOCKED) {
                        zr36057_enable_jpg(zr, codec_mode);
                  }
                  break;

            default:
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_QBUF - unsupported type %d\n",
                        ZR_DEVNAME(zr), buf->type);
                  res = -EINVAL;
                  goto qbuf_unlock_and_return;
            }
      qbuf_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOC_DQBUF:
      {
            struct v4l2_buffer *buf = arg;
            int res = 0, buf_type, num = -1;    /* compiler borks here (?) */

            dprintk(3, KERN_DEBUG "%s: VIDIOC_DQBUF - type=%d\n",
                  ZR_DEVNAME(zr), buf->type);

            mutex_lock(&zr->resource_lock);

            switch (fh->map_mode) {
            case ZORAN_MAP_MODE_RAW:
                  if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
                        dprintk(1,
                              KERN_ERR
                              "%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
                              ZR_DEVNAME(zr), buf->type, fh->map_mode);
                        res = -EINVAL;
                        goto dqbuf_unlock_and_return;
                  }

                  num = zr->v4l_pend[zr->v4l_sync_tail & V4L_MASK_FRAME];
                  if (file->f_flags & O_NONBLOCK &&
                      zr->v4l_buffers.buffer[num].state !=
                      BUZ_STATE_DONE) {
                        res = -EAGAIN;
                        goto dqbuf_unlock_and_return;
                  }
                  res = v4l_sync(file, num);
                  if (res)
                        goto dqbuf_unlock_and_return;
                  else
                        zr->v4l_sync_tail++;
                  res = zoran_v4l2_buffer_status(file, buf, num);
                  break;

            case ZORAN_MAP_MODE_JPG_REC:
            case ZORAN_MAP_MODE_JPG_PLAY:
            {
                  struct zoran_sync bs;

                  if (fh->map_mode == ZORAN_MAP_MODE_JPG_PLAY)
                        buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
                  else
                        buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;

                  if (buf->type != buf_type) {
                        dprintk(1,
                              KERN_ERR
                              "%s: VIDIOC_QBUF - invalid buf->type=%d for map_mode=%d\n",
                              ZR_DEVNAME(zr), buf->type, fh->map_mode);
                        res = -EINVAL;
                        goto dqbuf_unlock_and_return;
                  }

                  num =
                      zr->jpg_pend[zr->
                               jpg_que_tail & BUZ_MASK_FRAME];

                  if (file->f_flags & O_NONBLOCK &&
                      zr->jpg_buffers.buffer[num].state !=
                      BUZ_STATE_DONE) {
                        res = -EAGAIN;
                        goto dqbuf_unlock_and_return;
                  }
                  res = jpg_sync(file, &bs);
                  if (res)
                        goto dqbuf_unlock_and_return;
                  res =
                      zoran_v4l2_buffer_status(file, buf, bs.frame);
                  break;
            }

            default:
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_DQBUF - unsupported type %d\n",
                        ZR_DEVNAME(zr), buf->type);
                  res = -EINVAL;
                  goto dqbuf_unlock_and_return;
            }
      dqbuf_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOC_STREAMON:
      {
            int res = 0;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_STREAMON\n", ZR_DEVNAME(zr));

            mutex_lock(&zr->resource_lock);

            switch (fh->map_mode) {
            case ZORAN_MAP_MODE_RAW:      /* raw capture */
                  if (zr->v4l_buffers.active != ZORAN_ACTIVE ||
                      fh->v4l_buffers.active != ZORAN_ACTIVE) {
                        res = -EBUSY;
                        goto strmon_unlock_and_return;
                  }

                  zr->v4l_buffers.active = fh->v4l_buffers.active =
                      ZORAN_LOCKED;
                  zr->v4l_settings = fh->v4l_settings;

                  zr->v4l_sync_tail = zr->v4l_pend_tail;
                  if (!zr->v4l_memgrab_active &&
                      zr->v4l_pend_head != zr->v4l_pend_tail) {
                        zr36057_set_memgrab(zr, 1);
                  }
                  break;

            case ZORAN_MAP_MODE_JPG_REC:
            case ZORAN_MAP_MODE_JPG_PLAY:
                  /* what is the codec mode right now? */
                  if (zr->jpg_buffers.active != ZORAN_ACTIVE ||
                      fh->jpg_buffers.active != ZORAN_ACTIVE) {
                        res = -EBUSY;
                        goto strmon_unlock_and_return;
                  }

                  zr->jpg_buffers.active = fh->jpg_buffers.active =
                      ZORAN_LOCKED;

                  if (zr->jpg_que_head != zr->jpg_que_tail) {
                        /* Start the jpeg codec when the first frame is queued  */
                        jpeg_start(zr);
                  }

                  break;
            default:
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_STREAMON - invalid map mode %d\n",
                        ZR_DEVNAME(zr), fh->map_mode);
                  res = -EINVAL;
                  goto strmon_unlock_and_return;
            }
      strmon_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOC_STREAMOFF:
      {
            int i, res = 0;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_STREAMOFF\n", ZR_DEVNAME(zr));

            mutex_lock(&zr->resource_lock);

            switch (fh->map_mode) {
            case ZORAN_MAP_MODE_RAW:      /* raw capture */
                  if (fh->v4l_buffers.active == ZORAN_FREE &&
                      zr->v4l_buffers.active != ZORAN_FREE) {
                        res = -EPERM;     /* stay off other's settings! */
                        goto strmoff_unlock_and_return;
                  }
                  if (zr->v4l_buffers.active == ZORAN_FREE)
                        goto strmoff_unlock_and_return;

                  /* unload capture */
                  if (zr->v4l_memgrab_active) {
                        long flags;

                        spin_lock_irqsave(&zr->spinlock, flags);
                        zr36057_set_memgrab(zr, 0);
                        spin_unlock_irqrestore(&zr->spinlock, flags);
                  }

                  for (i = 0; i < fh->v4l_buffers.num_buffers; i++)
                        zr->v4l_buffers.buffer[i].state =
                            BUZ_STATE_USER;
                  fh->v4l_buffers = zr->v4l_buffers;

                  zr->v4l_buffers.active = fh->v4l_buffers.active =
                      ZORAN_FREE;

                  zr->v4l_grab_seq = 0;
                  zr->v4l_pend_head = zr->v4l_pend_tail = 0;
                  zr->v4l_sync_tail = 0;

                  break;

            case ZORAN_MAP_MODE_JPG_REC:
            case ZORAN_MAP_MODE_JPG_PLAY:
                  if (fh->jpg_buffers.active == ZORAN_FREE &&
                      zr->jpg_buffers.active != ZORAN_FREE) {
                        res = -EPERM;     /* stay off other's settings! */
                        goto strmoff_unlock_and_return;
                  }
                  if (zr->jpg_buffers.active == ZORAN_FREE)
                        goto strmoff_unlock_and_return;

                  res =
                      jpg_qbuf(file, -1,
                             (fh->map_mode ==
                              ZORAN_MAP_MODE_JPG_REC) ?
                             BUZ_MODE_MOTION_COMPRESS :
                             BUZ_MODE_MOTION_DECOMPRESS);
                  if (res)
                        goto strmoff_unlock_and_return;
                  break;
            default:
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_STREAMOFF - invalid map mode %d\n",
                        ZR_DEVNAME(zr), fh->map_mode);
                  res = -EINVAL;
                  goto strmoff_unlock_and_return;
            }
      strmoff_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOC_QUERYCTRL:
      {
            struct v4l2_queryctrl *ctrl = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_QUERYCTRL - id=%d\n",
                  ZR_DEVNAME(zr), ctrl->id);

            /* we only support hue/saturation/contrast/brightness */
            if (ctrl->id < V4L2_CID_BRIGHTNESS ||
                ctrl->id > V4L2_CID_HUE)
                  return -EINVAL;
            else {
                  int id = ctrl->id;
                  memset(ctrl, 0, sizeof(*ctrl));
                  ctrl->id = id;
            }

            switch (ctrl->id) {
            case V4L2_CID_BRIGHTNESS:
                  strncpy(ctrl->name, "Brightness", sizeof(ctrl->name)-1);
                  break;
            case V4L2_CID_CONTRAST:
                  strncpy(ctrl->name, "Contrast", sizeof(ctrl->name)-1);
                  break;
            case V4L2_CID_SATURATION:
                  strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)-1);
                  break;
            case V4L2_CID_HUE:
                  strncpy(ctrl->name, "Hue", sizeof(ctrl->name)-1);
                  break;
            }

            ctrl->minimum = 0;
            ctrl->maximum = 65535;
            ctrl->step = 1;
            ctrl->default_value = 32768;
            ctrl->type = V4L2_CTRL_TYPE_INTEGER;

            return 0;
      }
            break;

      case VIDIOC_G_CTRL:
      {
            struct v4l2_control *ctrl = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_G_CTRL - id=%d\n",
                  ZR_DEVNAME(zr), ctrl->id);

            /* we only support hue/saturation/contrast/brightness */
            if (ctrl->id < V4L2_CID_BRIGHTNESS ||
                ctrl->id > V4L2_CID_HUE)
                  return -EINVAL;

            mutex_lock(&zr->resource_lock);
            switch (ctrl->id) {
            case V4L2_CID_BRIGHTNESS:
                  ctrl->value = zr->brightness;
                  break;
            case V4L2_CID_CONTRAST:
                  ctrl->value = zr->contrast;
                  break;
            case V4L2_CID_SATURATION:
                  ctrl->value = zr->saturation;
                  break;
            case V4L2_CID_HUE:
                  ctrl->value = zr->hue;
                  break;
            }
            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOC_S_CTRL:
      {
            struct v4l2_control *ctrl = arg;
            struct video_picture pict;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_S_CTRL - id=%d\n",
                  ZR_DEVNAME(zr), ctrl->id);

            /* we only support hue/saturation/contrast/brightness */
            if (ctrl->id < V4L2_CID_BRIGHTNESS ||
                ctrl->id > V4L2_CID_HUE)
                  return -EINVAL;

            if (ctrl->value < 0 || ctrl->value > 65535) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_S_CTRL - invalid value %d for id=%d\n",
                        ZR_DEVNAME(zr), ctrl->value, ctrl->id);
                  return -EINVAL;
            }

            mutex_lock(&zr->resource_lock);
            switch (ctrl->id) {
            case V4L2_CID_BRIGHTNESS:
                  zr->brightness = ctrl->value;
                  break;
            case V4L2_CID_CONTRAST:
                  zr->contrast = ctrl->value;
                  break;
            case V4L2_CID_SATURATION:
                  zr->saturation = ctrl->value;
                  break;
            case V4L2_CID_HUE:
                  zr->hue = ctrl->value;
                  break;
            }
            pict.brightness = zr->brightness;
            pict.contrast = zr->contrast;
            pict.colour = zr->saturation;
            pict.hue = zr->hue;

            decoder_command(zr, DECODER_SET_PICTURE, &pict);

            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOC_ENUMSTD:
      {
            struct v4l2_standard *std = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUMSTD - index=%d\n",
                  ZR_DEVNAME(zr), std->index);

            if (std->index < 0 || std->index >= (zr->card.norms + 1))
                  return -EINVAL;
            else {
                  int id = std->index;
                  memset(std, 0, sizeof(*std));
                  std->index = id;
            }

            if (std->index == zr->card.norms) {
                  /* if we have autodetect, ... */
                  struct video_decoder_capability caps;
                  decoder_command(zr, DECODER_GET_CAPABILITIES,
                              &caps);
                  if (caps.flags & VIDEO_DECODER_AUTO) {
                        std->id = V4L2_STD_ALL;
                        strncpy(std->name, "Autodetect", sizeof(std->name)-1);
                        return 0;
                  } else
                        return -EINVAL;
            }
            switch (std->index) {
            case 0:
                  std->id = V4L2_STD_PAL;
                  strncpy(std->name, "PAL", sizeof(std->name)-1);
                  std->frameperiod.numerator = 1;
                  std->frameperiod.denominator = 25;
                  std->framelines = zr->card.tvn[0]->Ht;
                  break;
            case 1:
                  std->id = V4L2_STD_NTSC;
                  strncpy(std->name, "NTSC", sizeof(std->name)-1);
                  std->frameperiod.numerator = 1001;
                  std->frameperiod.denominator = 30000;
                  std->framelines = zr->card.tvn[1]->Ht;
                  break;
            case 2:
                  std->id = V4L2_STD_SECAM;
                  strncpy(std->name, "SECAM", sizeof(std->name)-1);
                  std->frameperiod.numerator = 1;
                  std->frameperiod.denominator = 25;
                  std->framelines = zr->card.tvn[2]->Ht;
                  break;
            }

            return 0;
      }
            break;

      case VIDIOC_G_STD:
      {
            v4l2_std_id *std = arg;
            int norm;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_G_STD\n", ZR_DEVNAME(zr));

            mutex_lock(&zr->resource_lock);
            norm = zr->norm;
            mutex_unlock(&zr->resource_lock);

            switch (norm) {
            case VIDEO_MODE_PAL:
                  *std = V4L2_STD_PAL;
                  break;
            case VIDEO_MODE_NTSC:
                  *std = V4L2_STD_NTSC;
                  break;
            case VIDEO_MODE_SECAM:
                  *std = V4L2_STD_SECAM;
                  break;
            }

            return 0;
      }
            break;

      case VIDIOC_S_STD:
      {
            int norm = -1, res = 0;
            v4l2_std_id *std = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_S_STD - norm=0x%llx\n",
                  ZR_DEVNAME(zr), (unsigned long long)*std);

            if ((*std & V4L2_STD_PAL) && !(*std & ~V4L2_STD_PAL))
                  norm = VIDEO_MODE_PAL;
            else if ((*std & V4L2_STD_NTSC) && !(*std & ~V4L2_STD_NTSC))
                  norm = VIDEO_MODE_NTSC;
            else if ((*std & V4L2_STD_SECAM) && !(*std & ~V4L2_STD_SECAM))
                  norm = VIDEO_MODE_SECAM;
            else if (*std == V4L2_STD_ALL)
                  norm = VIDEO_MODE_AUTO;
            else {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_S_STD - invalid norm 0x%llx\n",
                        ZR_DEVNAME(zr), (unsigned long long)*std);
                  return -EINVAL;
            }

            mutex_lock(&zr->resource_lock);
            if ((res = zoran_set_norm(zr, norm)))
                  goto sstd_unlock_and_return;

            res = wait_grab_pending(zr);
      sstd_unlock_and_return:
            mutex_unlock(&zr->resource_lock);
            return res;
      }
            break;

      case VIDIOC_ENUMINPUT:
      {
            struct v4l2_input *inp = arg;
            int status;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUMINPUT - index=%d\n",
                  ZR_DEVNAME(zr), inp->index);

            if (inp->index < 0 || inp->index >= zr->card.inputs)
                  return -EINVAL;
            else {
                  int id = inp->index;
                  memset(inp, 0, sizeof(*inp));
                  inp->index = id;
            }

            strncpy(inp->name, zr->card.input[inp->index].name,
                  sizeof(inp->name) - 1);
            inp->type = V4L2_INPUT_TYPE_CAMERA;
            inp->std = V4L2_STD_ALL;

            /* Get status of video decoder */
            mutex_lock(&zr->resource_lock);
            decoder_command(zr, DECODER_GET_STATUS, &status);
            mutex_unlock(&zr->resource_lock);

            if (!(status & DECODER_STATUS_GOOD)) {
                  inp->status |= V4L2_IN_ST_NO_POWER;
                  inp->status |= V4L2_IN_ST_NO_SIGNAL;
            }
            if (!(status & DECODER_STATUS_COLOR))
                  inp->status |= V4L2_IN_ST_NO_COLOR;

            return 0;
      }
            break;

      case VIDIOC_G_INPUT:
      {
            int *input = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_G_INPUT\n", ZR_DEVNAME(zr));

            mutex_lock(&zr->resource_lock);
            *input = zr->input;
            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOC_S_INPUT:
      {
            int *input = arg, res = 0;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_S_INPUT - input=%d\n",
                  ZR_DEVNAME(zr), *input);

            mutex_lock(&zr->resource_lock);
            if ((res = zoran_set_input(zr, *input)))
                  goto sinput_unlock_and_return;

            /* Make sure the changes come into effect */
            res = wait_grab_pending(zr);
      sinput_unlock_and_return:
            mutex_unlock(&zr->resource_lock);
            return res;
      }
            break;

      case VIDIOC_ENUMOUTPUT:
      {
            struct v4l2_output *outp = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUMOUTPUT - index=%d\n",
                  ZR_DEVNAME(zr), outp->index);

            if (outp->index != 0)
                  return -EINVAL;

            memset(outp, 0, sizeof(*outp));
            outp->index = 0;
            outp->type = V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY;
            strncpy(outp->name, "Autodetect", sizeof(outp->name)-1);

            return 0;
      }
            break;

      case VIDIOC_G_OUTPUT:
      {
            int *output = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_G_OUTPUT\n", ZR_DEVNAME(zr));

            *output = 0;

            return 0;
      }
            break;

      case VIDIOC_S_OUTPUT:
      {
            int *output = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_S_OUTPUT - output=%d\n",
                  ZR_DEVNAME(zr), *output);

            if (*output != 0)
                  return -EINVAL;

            return 0;
      }
            break;

            /* cropping (sub-frame capture) */
      case VIDIOC_CROPCAP:
      {
            struct v4l2_cropcap *cropcap = arg;
            int type = cropcap->type, res = 0;

            dprintk(3, KERN_ERR "%s: VIDIOC_CROPCAP - type=%d\n",
                  ZR_DEVNAME(zr), cropcap->type);

            memset(cropcap, 0, sizeof(*cropcap));
            cropcap->type = type;

            mutex_lock(&zr->resource_lock);

            if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
                (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
                 fh->map_mode == ZORAN_MAP_MODE_RAW)) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_CROPCAP - subcapture only supported for compressed capture\n",
                        ZR_DEVNAME(zr));
                  res = -EINVAL;
                  goto cropcap_unlock_and_return;
            }

            cropcap->bounds.top = cropcap->bounds.left = 0;
            cropcap->bounds.width = BUZ_MAX_WIDTH;
            cropcap->bounds.height = BUZ_MAX_HEIGHT;
            cropcap->defrect.top = cropcap->defrect.left = 0;
            cropcap->defrect.width = BUZ_MIN_WIDTH;
            cropcap->defrect.height = BUZ_MIN_HEIGHT;
      cropcap_unlock_and_return:
            mutex_unlock(&zr->resource_lock);
            return res;
      }
            break;

      case VIDIOC_G_CROP:
      {
            struct v4l2_crop *crop = arg;
            int type = crop->type, res = 0;

            dprintk(3, KERN_ERR "%s: VIDIOC_G_CROP - type=%d\n",
                  ZR_DEVNAME(zr), crop->type);

            memset(crop, 0, sizeof(*crop));
            crop->type = type;

            mutex_lock(&zr->resource_lock);

            if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
                (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
                 fh->map_mode == ZORAN_MAP_MODE_RAW)) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_G_CROP - subcapture only supported for compressed capture\n",
                        ZR_DEVNAME(zr));
                  res = -EINVAL;
                  goto gcrop_unlock_and_return;
            }

            crop->c.top = fh->jpg_settings.img_y;
            crop->c.left = fh->jpg_settings.img_x;
            crop->c.width = fh->jpg_settings.img_width;
            crop->c.height = fh->jpg_settings.img_height;

      gcrop_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return res;
      }
            break;

      case VIDIOC_S_CROP:
      {
            struct v4l2_crop *crop = arg;
            int res = 0;

            settings = fh->jpg_settings;

            dprintk(3,
                  KERN_ERR
                  "%s: VIDIOC_S_CROP - type=%d, x=%d,y=%d,w=%d,h=%d\n",
                  ZR_DEVNAME(zr), crop->type, crop->c.left, crop->c.top,
                  crop->c.width, crop->c.height);

            mutex_lock(&zr->resource_lock);

            if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_S_CROP - cannot change settings while active\n",
                        ZR_DEVNAME(zr));
                  res = -EBUSY;
                  goto scrop_unlock_and_return;
            }

            if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
                (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
                 fh->map_mode == ZORAN_MAP_MODE_RAW)) {
                  dprintk(1,
                        KERN_ERR
                        "%s: VIDIOC_G_CROP - subcapture only supported for compressed capture\n",
                        ZR_DEVNAME(zr));
                  res = -EINVAL;
                  goto scrop_unlock_and_return;
            }

            /* move into a form that we understand */
            settings.img_x = crop->c.left;
            settings.img_y = crop->c.top;
            settings.img_width = crop->c.width;
            settings.img_height = crop->c.height;

            /* check validity */
            if ((res = zoran_check_jpg_settings(zr, &settings)))
                  goto scrop_unlock_and_return;

            /* accept */
            fh->jpg_settings = settings;

      scrop_unlock_and_return:
            mutex_unlock(&zr->resource_lock);
            return res;
      }
            break;

      case VIDIOC_G_JPEGCOMP:
      {
            struct v4l2_jpegcompression *params = arg;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_G_JPEGCOMP\n",
                  ZR_DEVNAME(zr));

            memset(params, 0, sizeof(*params));

            mutex_lock(&zr->resource_lock);

            params->quality = fh->jpg_settings.jpg_comp.quality;
            params->APPn = fh->jpg_settings.jpg_comp.APPn;
            memcpy(params->APP_data,
                   fh->jpg_settings.jpg_comp.APP_data,
                   fh->jpg_settings.jpg_comp.APP_len);
            params->APP_len = fh->jpg_settings.jpg_comp.APP_len;
            memcpy(params->COM_data,
                   fh->jpg_settings.jpg_comp.COM_data,
                   fh->jpg_settings.jpg_comp.COM_len);
            params->COM_len = fh->jpg_settings.jpg_comp.COM_len;
            params->jpeg_markers =
                fh->jpg_settings.jpg_comp.jpeg_markers;

            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOC_S_JPEGCOMP:
      {
            struct v4l2_jpegcompression *params = arg;
            int res = 0;

            settings = fh->jpg_settings;

            dprintk(3,
                  KERN_DEBUG
                  "%s: VIDIOC_S_JPEGCOMP - quality=%d, APPN=%d, APP_len=%d, COM_len=%d\n",
                  ZR_DEVNAME(zr), params->quality, params->APPn,
                  params->APP_len, params->COM_len);

            settings.jpg_comp = *params;

            mutex_lock(&zr->resource_lock);

            if (fh->v4l_buffers.active != ZORAN_FREE ||
                fh->jpg_buffers.active != ZORAN_FREE) {
                  dprintk(1,
                        KERN_WARNING
                        "%s: VIDIOC_S_JPEGCOMP called while in playback/capture mode\n",
                        ZR_DEVNAME(zr));
                  res = -EBUSY;
                  goto sjpegc_unlock_and_return;
            }

            if ((res = zoran_check_jpg_settings(zr, &settings)))
                  goto sjpegc_unlock_and_return;
            if (!fh->jpg_buffers.allocated)
                  fh->jpg_buffers.buffer_size =
                      zoran_v4l2_calc_bufsize(&fh->jpg_settings);
            fh->jpg_settings.jpg_comp = *params = settings.jpg_comp;
      sjpegc_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            return 0;
      }
            break;

      case VIDIOC_QUERYSTD:   /* why is this useful? */
      {
            v4l2_std_id *std = arg;

            dprintk(3,
                  KERN_DEBUG "%s: VIDIOC_QUERY_STD - std=0x%llx\n",
                  ZR_DEVNAME(zr), (unsigned long long)*std);

            if (*std == V4L2_STD_ALL || *std == V4L2_STD_NTSC ||
                *std == V4L2_STD_PAL || (*std == V4L2_STD_SECAM &&
                                   zr->card.norms == 3)) {
                  return 0;
            }

            return -EINVAL;
      }
            break;

      case VIDIOC_TRY_FMT:
      {
            struct v4l2_format *fmt = arg;
            int res = 0;

            dprintk(3, KERN_DEBUG "%s: VIDIOC_TRY_FMT - type=%d\n",
                  ZR_DEVNAME(zr), fmt->type);

            switch (fmt->type) {
            case V4L2_BUF_TYPE_VIDEO_OVERLAY:
                  mutex_lock(&zr->resource_lock);

                  if (fmt->fmt.win.w.width > BUZ_MAX_WIDTH)
                        fmt->fmt.win.w.width = BUZ_MAX_WIDTH;
                  if (fmt->fmt.win.w.width < BUZ_MIN_WIDTH)
                        fmt->fmt.win.w.width = BUZ_MIN_WIDTH;
                  if (fmt->fmt.win.w.height > BUZ_MAX_HEIGHT)
                        fmt->fmt.win.w.height = BUZ_MAX_HEIGHT;
                  if (fmt->fmt.win.w.height < BUZ_MIN_HEIGHT)
                        fmt->fmt.win.w.height = BUZ_MIN_HEIGHT;

                  mutex_unlock(&zr->resource_lock);
                  break;

            case V4L2_BUF_TYPE_VIDEO_CAPTURE:
            case V4L2_BUF_TYPE_VIDEO_OUTPUT:
                  if (fmt->fmt.pix.bytesperline > 0)
                        return -EINVAL;

                  mutex_lock(&zr->resource_lock);

                  if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG) {
                        settings = fh->jpg_settings;

                        /* we actually need to set 'real' parameters now */
                        if ((fmt->fmt.pix.height * 2) >
                            BUZ_MAX_HEIGHT)
                              settings.TmpDcm = 1;
                        else
                              settings.TmpDcm = 2;
                        settings.decimation = 0;
                        if (fmt->fmt.pix.height <=
                            fh->jpg_settings.img_height / 2)
                              settings.VerDcm = 2;
                        else
                              settings.VerDcm = 1;
                        if (fmt->fmt.pix.width <=
                            fh->jpg_settings.img_width / 4)
                              settings.HorDcm = 4;
                        else if (fmt->fmt.pix.width <=
                               fh->jpg_settings.img_width / 2)
                              settings.HorDcm = 2;
                        else
                              settings.HorDcm = 1;
                        if (settings.TmpDcm == 1)
                              settings.field_per_buff = 2;
                        else
                              settings.field_per_buff = 1;

                        /* check */
                        if ((res =
                             zoran_check_jpg_settings(zr,
                                                &settings)))
                              goto tryfmt_unlock_and_return;

                        /* tell the user what we actually did */
                        fmt->fmt.pix.width =
                            settings.img_width / settings.HorDcm;
                        fmt->fmt.pix.height =
                            settings.img_height * 2 /
                            (settings.TmpDcm * settings.VerDcm);
                        if (settings.TmpDcm == 1)
                              fmt->fmt.pix.field =
                                  (fh->jpg_settings.
                                   odd_even ? V4L2_FIELD_SEQ_TB :
                                   V4L2_FIELD_SEQ_BT);
                        else
                              fmt->fmt.pix.field =
                                  (fh->jpg_settings.
                                   odd_even ? V4L2_FIELD_TOP :
                                   V4L2_FIELD_BOTTOM);

                        fmt->fmt.pix.sizeimage =
                            zoran_v4l2_calc_bufsize(&settings);
                  } else if (fmt->type ==
                           V4L2_BUF_TYPE_VIDEO_CAPTURE) {
                        int i;

                        for (i = 0; i < NUM_FORMATS; i++)
                              if (zoran_formats[i].fourcc ==
                                  fmt->fmt.pix.pixelformat)
                                    break;
                        if (i == NUM_FORMATS) {
                              res = -EINVAL;
                              goto tryfmt_unlock_and_return;
                        }

                        if (fmt->fmt.pix.width > BUZ_MAX_WIDTH)
                              fmt->fmt.pix.width = BUZ_MAX_WIDTH;
                        if (fmt->fmt.pix.width < BUZ_MIN_WIDTH)
                              fmt->fmt.pix.width = BUZ_MIN_WIDTH;
                        if (fmt->fmt.pix.height > BUZ_MAX_HEIGHT)
                              fmt->fmt.pix.height =
                                  BUZ_MAX_HEIGHT;
                        if (fmt->fmt.pix.height < BUZ_MIN_HEIGHT)
                              fmt->fmt.pix.height =
                                  BUZ_MIN_HEIGHT;
                  } else {
                        res = -EINVAL;
                        goto tryfmt_unlock_and_return;
                  }
            tryfmt_unlock_and_return:
                  mutex_unlock(&zr->resource_lock);

                  return res;
                  break;

            default:
                  return -EINVAL;
            }

            return 0;
      }
            break;
#endif

      default:
            dprintk(1, KERN_DEBUG "%s: UNKNOWN ioctl cmd: 0x%x\n",
                  ZR_DEVNAME(zr), cmd);
            return -ENOIOCTLCMD;
            break;

      }
      return 0;
}


static int
zoran_ioctl (struct inode *inode,
           struct file  *file,
           unsigned int  cmd,
           unsigned long arg)
{
      return video_usercopy(inode, file, cmd, arg, zoran_do_ioctl);
}

static unsigned int
zoran_poll (struct file *file,
          poll_table  *wait)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int res = 0, frame;
      unsigned long flags;

      /* we should check whether buffers are ready to be synced on
       * (w/o waits - O_NONBLOCK) here
       * if ready for read (sync), return POLLIN|POLLRDNORM,
       * if ready for write (sync), return POLLOUT|POLLWRNORM,
       * if error, return POLLERR,
       * if no buffers queued or so, return POLLNVAL
       */

      mutex_lock(&zr->resource_lock);

      switch (fh->map_mode) {
      case ZORAN_MAP_MODE_RAW:
            poll_wait(file, &zr->v4l_capq, wait);
            frame = zr->v4l_pend[zr->v4l_sync_tail & V4L_MASK_FRAME];

            spin_lock_irqsave(&zr->spinlock, flags);
            dprintk(3,
                  KERN_DEBUG
                  "%s: %s() raw - active=%c, sync_tail=%lu/%c, pend_tail=%lu, pend_head=%lu\n",
                  ZR_DEVNAME(zr), __FUNCTION__,
                  "FAL"[fh->v4l_buffers.active], zr->v4l_sync_tail,
                  "UPMD"[zr->v4l_buffers.buffer[frame].state],
                  zr->v4l_pend_tail, zr->v4l_pend_head);
            /* Process is the one capturing? */
            if (fh->v4l_buffers.active != ZORAN_FREE &&
                /* Buffer ready to DQBUF? */
                zr->v4l_buffers.buffer[frame].state == BUZ_STATE_DONE)
                  res = POLLIN | POLLRDNORM;
            spin_unlock_irqrestore(&zr->spinlock, flags);

            break;

      case ZORAN_MAP_MODE_JPG_REC:
      case ZORAN_MAP_MODE_JPG_PLAY:
            poll_wait(file, &zr->jpg_capq, wait);
            frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];

            spin_lock_irqsave(&zr->spinlock, flags);
            dprintk(3,
                  KERN_DEBUG
                  "%s: %s() jpg - active=%c, que_tail=%lu/%c, que_head=%lu, dma=%lu/%lu\n",
                  ZR_DEVNAME(zr), __FUNCTION__,
                  "FAL"[fh->jpg_buffers.active], zr->jpg_que_tail,
                  "UPMD"[zr->jpg_buffers.buffer[frame].state],
                  zr->jpg_que_head, zr->jpg_dma_tail, zr->jpg_dma_head);
            if (fh->jpg_buffers.active != ZORAN_FREE &&
                zr->jpg_buffers.buffer[frame].state == BUZ_STATE_DONE) {
                  if (fh->map_mode == ZORAN_MAP_MODE_JPG_REC)
                        res = POLLIN | POLLRDNORM;
                  else
                        res = POLLOUT | POLLWRNORM;
            }
            spin_unlock_irqrestore(&zr->spinlock, flags);

            break;

      default:
            dprintk(1,
                  KERN_ERR
                  "%s: zoran_poll() - internal error, unknown map_mode=%d\n",
                  ZR_DEVNAME(zr), fh->map_mode);
            res = POLLNVAL;
      }

      mutex_unlock(&zr->resource_lock);

      return res;
}


/*
 * This maps the buffers to user space.
 *
 * Depending on the state of fh->map_mode
 * the V4L or the MJPEG buffers are mapped
 * per buffer or all together
 *
 * Note that we need to connect to some
 * unmap signal event to unmap the de-allocate
 * the buffer accordingly (zoran_vm_close())
 */

static void
zoran_vm_open (struct vm_area_struct *vma)
{
      struct zoran_mapping *map = vma->vm_private_data;

      map->count++;
}

static void
zoran_vm_close (struct vm_area_struct *vma)
{
      struct zoran_mapping *map = vma->vm_private_data;
      struct file *file = map->file;
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      int i;

      map->count--;
      if (map->count == 0) {
            switch (fh->map_mode) {
            case ZORAN_MAP_MODE_JPG_REC:
            case ZORAN_MAP_MODE_JPG_PLAY:

                  dprintk(3, KERN_INFO "%s: munmap(MJPEG)\n",
                        ZR_DEVNAME(zr));

                  for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
                        if (fh->jpg_buffers.buffer[i].map == map) {
                              fh->jpg_buffers.buffer[i].map =
                                  NULL;
                        }
                  }
                  kfree(map);

                  for (i = 0; i < fh->jpg_buffers.num_buffers; i++)
                        if (fh->jpg_buffers.buffer[i].map)
                              break;
                  if (i == fh->jpg_buffers.num_buffers) {
                        mutex_lock(&zr->resource_lock);

                        if (fh->jpg_buffers.active != ZORAN_FREE) {
                              jpg_qbuf(file, -1, zr->codec_mode);
                              zr->jpg_buffers.allocated = 0;
                              zr->jpg_buffers.active =
                                  fh->jpg_buffers.active =
                                  ZORAN_FREE;
                        }
                        //jpg_fbuffer_free(file);
                        fh->jpg_buffers.allocated = 0;
                        fh->jpg_buffers.ready_to_be_freed = 1;

                        mutex_unlock(&zr->resource_lock);
                  }

                  break;

            case ZORAN_MAP_MODE_RAW:

                  dprintk(3, KERN_INFO "%s: munmap(V4L)\n",
                        ZR_DEVNAME(zr));

                  for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
                        if (fh->v4l_buffers.buffer[i].map == map) {
                              /* unqueue/unmap */
                              fh->v4l_buffers.buffer[i].map =
                                  NULL;
                        }
                  }
                  kfree(map);

                  for (i = 0; i < fh->v4l_buffers.num_buffers; i++)
                        if (fh->v4l_buffers.buffer[i].map)
                              break;
                  if (i == fh->v4l_buffers.num_buffers) {
                        mutex_lock(&zr->resource_lock);

                        if (fh->v4l_buffers.active != ZORAN_FREE) {
                              long flags;

                              spin_lock_irqsave(&zr->spinlock, flags);
                              zr36057_set_memgrab(zr, 0);
                              zr->v4l_buffers.allocated = 0;
                              zr->v4l_buffers.active =
                                  fh->v4l_buffers.active =
                                  ZORAN_FREE;
                              spin_unlock_irqrestore(&zr->spinlock, flags);
                        }
                        //v4l_fbuffer_free(file);
                        fh->v4l_buffers.allocated = 0;
                        fh->v4l_buffers.ready_to_be_freed = 1;

                        mutex_unlock(&zr->resource_lock);
                  }

                  break;

            default:
                  printk(KERN_ERR
                         "%s: munmap() - internal error - unknown map mode %d\n",
                         ZR_DEVNAME(zr), fh->map_mode);
                  break;

            }
      }
}

static struct vm_operations_struct zoran_vm_ops = {
      .open = zoran_vm_open,
      .close = zoran_vm_close,
};

static int
zoran_mmap (struct file           *file,
          struct vm_area_struct *vma)
{
      struct zoran_fh *fh = file->private_data;
      struct zoran *zr = fh->zr;
      unsigned long size = (vma->vm_end - vma->vm_start);
      unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
      int i, j;
      unsigned long page, start = vma->vm_start, todo, pos, fraglen;
      int first, last;
      struct zoran_mapping *map;
      int res = 0;

      dprintk(3,
            KERN_INFO "%s: mmap(%s) of 0x%08lx-0x%08lx (size=%lu)\n",
            ZR_DEVNAME(zr),
            fh->map_mode == ZORAN_MAP_MODE_RAW ? "V4L" : "MJPEG",
            vma->vm_start, vma->vm_end, size);

      if (!(vma->vm_flags & VM_SHARED) || !(vma->vm_flags & VM_READ) ||
          !(vma->vm_flags & VM_WRITE)) {
            dprintk(1,
                  KERN_ERR
                  "%s: mmap() - no MAP_SHARED/PROT_{READ,WRITE} given\n",
                  ZR_DEVNAME(zr));
            return -EINVAL;
      }

      switch (fh->map_mode) {

      case ZORAN_MAP_MODE_JPG_REC:
      case ZORAN_MAP_MODE_JPG_PLAY:

            /* lock */
            mutex_lock(&zr->resource_lock);

            /* Map the MJPEG buffers */
            if (!fh->jpg_buffers.allocated) {
                  dprintk(1,
                        KERN_ERR
                        "%s: zoran_mmap(MJPEG) - buffers not yet allocated\n",
                        ZR_DEVNAME(zr));
                  res = -ENOMEM;
                  goto jpg_mmap_unlock_and_return;
            }

            first = offset / fh->jpg_buffers.buffer_size;
            last = first - 1 + size / fh->jpg_buffers.buffer_size;
            if (offset % fh->jpg_buffers.buffer_size != 0 ||
                size % fh->jpg_buffers.buffer_size != 0 || first < 0 ||
                last < 0 || first >= fh->jpg_buffers.num_buffers ||
                last >= fh->jpg_buffers.num_buffers) {
                  dprintk(1,
                        KERN_ERR
                        "%s: mmap(MJPEG) - offset=%lu or size=%lu invalid for bufsize=%d and numbufs=%d\n",
                        ZR_DEVNAME(zr), offset, size,
                        fh->jpg_buffers.buffer_size,
                        fh->jpg_buffers.num_buffers);
                  res = -EINVAL;
                  goto jpg_mmap_unlock_and_return;
            }
            for (i = first; i <= last; i++) {
                  if (fh->jpg_buffers.buffer[i].map) {
                        dprintk(1,
                              KERN_ERR
                              "%s: mmap(MJPEG) - buffer %d already mapped\n",
                              ZR_DEVNAME(zr), i);
                        res = -EBUSY;
                        goto jpg_mmap_unlock_and_return;
                  }
            }

            /* map these buffers (v4l_buffers[i]) */
            map = kmalloc(sizeof(struct zoran_mapping), GFP_KERNEL);
            if (!map) {
                  res = -ENOMEM;
                  goto jpg_mmap_unlock_and_return;
            }
            map->file = file;
            map->count = 1;

            vma->vm_ops = &zoran_vm_ops;
            vma->vm_flags |= VM_DONTEXPAND;
            vma->vm_private_data = map;

            for (i = first; i <= last; i++) {
                  for (j = 0;
                       j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
                       j++) {
                        fraglen =
                            (le32_to_cpu(fh->jpg_buffers.buffer[i].
                             frag_tab[2 * j + 1]) & ~1) << 1;
                        todo = size;
                        if (todo > fraglen)
                              todo = fraglen;
                        pos =
                            le32_to_cpu((unsigned long) fh->jpg_buffers.
                            buffer[i].frag_tab[2 * j]);
                        /* should just be pos on i386 */
                        page = virt_to_phys(bus_to_virt(pos))
                                                >> PAGE_SHIFT;
                        if (remap_pfn_range(vma, start, page,
                                          todo, PAGE_SHARED)) {
                              dprintk(1,
                                    KERN_ERR
                                    "%s: zoran_mmap(V4L) - remap_pfn_range failed\n",
                                    ZR_DEVNAME(zr));
                              res = -EAGAIN;
                              goto jpg_mmap_unlock_and_return;
                        }
                        size -= todo;
                        start += todo;
                        if (size == 0)
                              break;
                        if (le32_to_cpu(fh->jpg_buffers.buffer[i].
                            frag_tab[2 * j + 1]) & 1)
                              break;      /* was last fragment */
                  }
                  fh->jpg_buffers.buffer[i].map = map;
                  if (size == 0)
                        break;

            }
      jpg_mmap_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            break;

      case ZORAN_MAP_MODE_RAW:

            mutex_lock(&zr->resource_lock);

            /* Map the V4L buffers */
            if (!fh->v4l_buffers.allocated) {
                  dprintk(1,
                        KERN_ERR
                        "%s: zoran_mmap(V4L) - buffers not yet allocated\n",
                        ZR_DEVNAME(zr));
                  res = -ENOMEM;
                  goto v4l_mmap_unlock_and_return;
            }

            first = offset / fh->v4l_buffers.buffer_size;
            last = first - 1 + size / fh->v4l_buffers.buffer_size;
            if (offset % fh->v4l_buffers.buffer_size != 0 ||
                size % fh->v4l_buffers.buffer_size != 0 || first < 0 ||
                last < 0 || first >= fh->v4l_buffers.num_buffers ||
                last >= fh->v4l_buffers.buffer_size) {
                  dprintk(1,
                        KERN_ERR
                        "%s: mmap(V4L) - offset=%lu or size=%lu invalid for bufsize=%d and numbufs=%d\n",
                        ZR_DEVNAME(zr), offset, size,
                        fh->v4l_buffers.buffer_size,
                        fh->v4l_buffers.num_buffers);
                  res = -EINVAL;
                  goto v4l_mmap_unlock_and_return;
            }
            for (i = first; i <= last; i++) {
                  if (fh->v4l_buffers.buffer[i].map) {
                        dprintk(1,
                              KERN_ERR
                              "%s: mmap(V4L) - buffer %d already mapped\n",
                              ZR_DEVNAME(zr), i);
                        res = -EBUSY;
                        goto v4l_mmap_unlock_and_return;
                  }
            }

            /* map these buffers (v4l_buffers[i]) */
            map = kmalloc(sizeof(struct zoran_mapping), GFP_KERNEL);
            if (!map) {
                  res = -ENOMEM;
                  goto v4l_mmap_unlock_and_return;
            }
            map->file = file;
            map->count = 1;

            vma->vm_ops = &zoran_vm_ops;
            vma->vm_flags |= VM_DONTEXPAND;
            vma->vm_private_data = map;

            for (i = first; i <= last; i++) {
                  todo = size;
                  if (todo > fh->v4l_buffers.buffer_size)
                        todo = fh->v4l_buffers.buffer_size;
                  page = fh->v4l_buffers.buffer[i].fbuffer_phys;
                  if (remap_pfn_range(vma, start, page >> PAGE_SHIFT,
                                          todo, PAGE_SHARED)) {
                        dprintk(1,
                              KERN_ERR
                              "%s: zoran_mmap(V4L)i - remap_pfn_range failed\n",
                              ZR_DEVNAME(zr));
                        res = -EAGAIN;
                        goto v4l_mmap_unlock_and_return;
                  }
                  size -= todo;
                  start += todo;
                  fh->v4l_buffers.buffer[i].map = map;
                  if (size == 0)
                        break;
            }
      v4l_mmap_unlock_and_return:
            mutex_unlock(&zr->resource_lock);

            break;

      default:
            dprintk(1,
                  KERN_ERR
                  "%s: zoran_mmap() - internal error - unknown map mode %d\n",
                  ZR_DEVNAME(zr), fh->map_mode);
            break;
      }

      return 0;
}

static const struct file_operations zoran_fops = {
      .owner = THIS_MODULE,
      .open = zoran_open,
      .release = zoran_close,
      .ioctl = zoran_ioctl,
      .compat_ioctl     = v4l_compat_ioctl32,
      .llseek = no_llseek,
      .read = zoran_read,
      .write = zoran_write,
      .mmap = zoran_mmap,
      .poll = zoran_poll,
};

struct video_device zoran_template __devinitdata = {
      .name = ZORAN_NAME,
      .type = ZORAN_VID_TYPE,
#ifdef CONFIG_VIDEO_V4L2
      .type2 = ZORAN_V4L2_VID_FLAGS,
#endif
      .fops = &zoran_fops,
      .release = &zoran_vdev_release,
      .minor = -1
};


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