Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 4699 insertions, 0 deletions

diff --git a/drivers/media/video/zoran_driver.c b/drivers/media/video/zoran_driver.c
new file mode 100644
index 000000000000..ba838a42ec80
--- /dev/null
+++ b/drivers/media/video/zoran_driver.c
@@ -0,0 +1,4699 @@
+/*
+ * 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/config.h>
+#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_HARDWARE  VID_HARDWARE_ZR36067
+#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 "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 "zoran.h"
+#include "zoran_device.h"
+#include "zoran_card.h"
+
+#ifdef HAVE_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>
+
+const struct zoran_format zoran_formats[] = {
+	{
+		.name = "15-bit RGB",
+		.palette = VIDEO_PALETTE_RGB555,
+#ifdef HAVE_V4L2
+#ifdef __LITTLE_ENDIAN
+		.fourcc = V4L2_PIX_FMT_RGB555,
+#else
+		.fourcc = V4L2_PIX_FMT_RGB555X,
+#endif
+		.colorspace = V4L2_COLORSPACE_SRGB,
+#endif
+		.depth = 15,
+		.flags = ZORAN_FORMAT_CAPTURE |
+			 ZORAN_FORMAT_OVERLAY,
+	}, {
+		.name = "16-bit RGB",
+		.palette = VIDEO_PALETTE_RGB565,
+#ifdef HAVE_V4L2
+#ifdef __LITTLE_ENDIAN
+		.fourcc = V4L2_PIX_FMT_RGB565,
+#else
+		.fourcc = V4L2_PIX_FMT_RGB565X,
+#endif
+		.colorspace = V4L2_COLORSPACE_SRGB,
+#endif
+		.depth = 16,
+		.flags = ZORAN_FORMAT_CAPTURE |
+			 ZORAN_FORMAT_OVERLAY,
+	}, {
+		.name = "24-bit RGB",
+		.palette = VIDEO_PALETTE_RGB24,
+#ifdef HAVE_V4L2
+#ifdef __LITTLE_ENDIAN
+		.fourcc = V4L2_PIX_FMT_BGR24,
+#else
+		.fourcc = V4L2_PIX_FMT_RGB24,
+#endif
+		.colorspace = V4L2_COLORSPACE_SRGB,
+#endif
+		.depth = 24,
+		.flags = ZORAN_FORMAT_CAPTURE |
+			 ZORAN_FORMAT_OVERLAY,
+	}, {
+		.name = "32-bit RGB",
+		.palette = VIDEO_PALETTE_RGB32,
+#ifdef HAVE_V4L2
+#ifdef __LITTLE_ENDIAN
+		.fourcc = V4L2_PIX_FMT_BGR32,
+#else
+		.fourcc = V4L2_PIX_FMT_RGB32,
+#endif
+		.colorspace = V4L2_COLORSPACE_SRGB,
+#endif
+		.depth = 32,
+		.flags = ZORAN_FORMAT_CAPTURE |
+			 ZORAN_FORMAT_OVERLAY,
+	}, {
+		.name = "4:2:2, packed, YUYV",
+		.palette = VIDEO_PALETTE_YUV422,
+#ifdef HAVE_V4L2
+		.fourcc = V4L2_PIX_FMT_YUYV,
+		.colorspace = V4L2_COLORSPACE_SMPTE170M,
+#endif
+		.depth = 16,
+		.flags = ZORAN_FORMAT_CAPTURE |
+		         ZORAN_FORMAT_OVERLAY,
+	}, {
+		.name = "Hardware-encoded Motion-JPEG",
+		.palette = -1,
+#ifdef HAVE_V4L2
+		.fourcc = V4L2_PIX_FMT_MJPEG,
+		.colorspace = V4L2_COLORSPACE_SMPTE170M,
+#endif
+		.depth = 0,
+		.flags = ZORAN_FORMAT_CAPTURE |
+			 ZORAN_FORMAT_PLAYBACK |
+			 ZORAN_FORMAT_COMPRESSED,
+	}
+};
+static const int zoran_num_formats =
+    (sizeof(zoran_formats) / sizeof(struct zoran_format));
+
+// RJ: Test only - want to test BUZ_USE_HIMEM even when CONFIG_BIGPHYS_AREA is defined
+#if !defined(CONFIG_BIGPHYS_AREA)
+//#undef CONFIG_BIGPHYS_AREA
+#define BUZ_USE_HIMEM
+#endif
+
+#if defined(CONFIG_BIGPHYS_AREA)
+#   include <linux/bigphysarea.h>
+#endif
+
+extern int *zr_debug;
+
+#define dprintk(num, format, args...) \
+	do { \
+		if (*zr_debug >= num) \
+			printk(format, ##args);	\
+	} while (0)
+
+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, 0);
+MODULE_PARM_DESC(lock_norm, "Users can't change norm");
+
+#ifdef HAVE_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).
+ */
+
+#if defined(BUZ_USE_HIMEM) && !defined(CONFIG_BIGPHYS_AREA)
+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;
+}
+#endif
+
+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;
+#if defined(BUZ_USE_HIMEM) && !defined(CONFIG_BIGPHYS_AREA)
+	unsigned long pmem = 0;
+#endif
+
+	/* 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 =
+			    (unsigned char *) 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 {
+#if defined(CONFIG_BIGPHYS_AREA)
+			/* Use bigphysarea_alloc_pages */
+
+			int n =
+			    (fh->v4l_buffers.buffer_size + PAGE_SIZE -
+			     1) / PAGE_SIZE;
+
+			mem =
+			    (unsigned char *) bigphysarea_alloc_pages(n, 0,
+								      GFP_KERNEL);
+			if (mem == 0) {
+				dprintk(1,
+					KERN_ERR
+					"%s: v4l_fbuffer_alloc() - bigphysarea_alloc_pages 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);
+			dprintk(4,
+				KERN_INFO
+				"%s: Bigphysarea frame %d mem 0x%x (bus: 0x%x)\n",
+				ZR_DEVNAME(zr), i, (unsigned) mem,
+				(unsigned) virt_to_bus(mem));
+
+			/* Zero out the allocated memory */
+			memset(fh->v4l_buffers.buffer[i].fbuffer, 0,
+			       fh->v4l_buffers.buffer_size);
+#elif defined(BUZ_USE_HIMEM)
+
+			/* 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;
+			}
+#else
+			/* No bigphysarea present, usage of high memory disabled,
+			 * but user wants buffers of more than MAX_KMALLOC_MEM */
+			dprintk(1,
+				KERN_ERR
+				"%s: v4l_fbuffer_alloc() - no bigphysarea_patch present, usage of high memory disabled,\n",
+				ZR_DEVNAME(zr));
+			dprintk(1,
+				KERN_ERR
+				"%s: v4l_fbuffer_alloc() - sorry, could not allocate %d V4L buffers of size %d KB.\n",
+				ZR_DEVNAME(zr), fh->v4l_buffers.num_buffers,
+				fh->v4l_buffers.buffer_size >> 10);
+			return -ENOBUFS;
+#endif
+		}
+	}
+
+	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);
+		}
+#if defined(CONFIG_BIGPHYS_AREA)
+		else
+			bigphysarea_free_pages((void *) fh->v4l_buffers.
+					       buffer[i].fbuffer);
+#endif
+		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;
+		}
+		memset((void *) mem, 0, PAGE_SIZE);
+		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((void *) 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 < zoran_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 == zoran_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;
+	}
+
+	spin_lock_irqsave(&zr->spinlock, flags);
+
+	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);
+	}
+
+	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_debug > 0)
+		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) {
+		zr36057_set_memgrab(zr, 0);
+		zr->v4l_buffers.allocated = 0;
+		zr->v4l_buffers.active = fh->v4l_buffers.active =
+		    ZORAN_FREE;
+	}
+
+	/* 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 */
+	/*down(&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->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->owner)) {
+		dprintk(1,
+			KERN_ERR
+			"%s: failed to grab ownership of i2c encoder\n",
+			ZR_DEVNAME(zr));
+		res = -EIO;
+		module_put(zr->decoder->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, current->pid, zr->user);
+
+	/* now, create the open()-specific file_ops struct */
+	fh = kmalloc(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;
+	}
+	memset(fh, 0, sizeof(struct zoran_fh));
+	/* 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;
+
+	/*up(&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->owner);
+		if (zr->encoder) {
+			module_put(zr->encoder->driver->owner);
+		}
+		module_put(THIS_MODULE);
+	}
+
+	/* if there's no device found, we didn't obtain the lock either */
+	if (zr) {
+		/*up(&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, current->pid, zr->user);
+
+	/* kernel locks (fs/device.c), so don't do that ourselves
+	 * (prevents deadlocks) */
+	/*down(&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 (*zr_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->owner);
+	if (zr->encoder) {
+		 module_put(zr->encoder->driver->owner);
+	}
+	module_put(THIS_MODULE);
+
+	/*up(&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;
+
+	/* 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 HAVE_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 (!down_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);
+
+		up(&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));
+		vcap->type = ZORAN_VID_TYPE;
+
+		vcap->channels = zr->card.inputs;
+		vcap->audios = 0;
+		down(&zr->resource_lock);
+		vcap->maxwidth = BUZ_MAX_WIDTH;
+		vcap->maxheight = BUZ_MAX_HEIGHT;
+		vcap->minwidth = BUZ_MIN_WIDTH;
+		vcap->minheight = BUZ_MIN_HEIGHT;
+		up(&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;
+		down(&zr->resource_lock);
+		vchan->norm = zr->norm;
+		up(&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);
+
+		down(&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:
+		up(&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));
+		down(&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;
+		}
+		up(&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 < zoran_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 == zoran_num_formats) {
+			dprintk(1,
+				KERN_ERR
+				"%s: VIDIOCSPICT - Invalid palette %d\n",
+				ZR_DEVNAME(zr), vpict->palette);
+			return -EINVAL;
+		}
+
+		down(&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];
+
+		up(&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);
+
+		down(&zr->resource_lock);
+		res = setup_overlay(file, *on);
+		up(&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));
+		down(&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;
+		up(&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);
+
+		down(&zr->resource_lock);
+		res =
+		    setup_window(file, vwin->x, vwin->y, vwin->width,
+				 vwin->height, vwin->clips,
+				 vwin->clipcount, NULL);
+		up(&zr->resource_lock);
+
+		return res;
+	}
+		break;
+
+	case VIDIOCGFBUF:
+	{
+		struct video_buffer *vbuf = arg;
+
+		dprintk(3, KERN_DEBUG "%s: VIDIOCGFBUF\n", ZR_DEVNAME(zr));
+
+		down(&zr->resource_lock);
+		*vbuf = zr->buffer;
+		up(&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 < zoran_num_formats; i++)
+			if (zoran_formats[i].depth == vbuf->depth)
+				break;
+		if (i == zoran_num_formats) {
+			dprintk(1,
+				KERN_ERR
+				"%s: VIDIOCSFBUF - invalid fbuf depth %d\n",
+				ZR_DEVNAME(zr), vbuf->depth);
+			return -EINVAL;
+		}
+
+		down(&zr->resource_lock);
+		res =
+		    setup_fbuffer(file, vbuf->base, &zoran_formats[i],
+				  vbuf->width, vbuf->height,
+				  vbuf->bytesperline);
+		up(&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);
+
+		down(&zr->resource_lock);
+		res = v4l_sync(file, *frame);
+		up(&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);
+
+		down(&zr->resource_lock);
+		res = v4l_grab(file, vmap);
+		up(&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;
+		}
+
+		down(&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:
+		up(&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;
+
+		down(&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;
+
+		up(&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;
+
+		down(&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:
+		up(&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;
+
+		down(&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:
+		up(&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);
+
+		down(&zr->resource_lock);
+		res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_COMPRESS);
+		up(&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);
+
+		down(&zr->resource_lock);
+		res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_DECOMPRESS);
+		up(&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));
+
+		down(&zr->resource_lock);
+		res = jpg_sync(file, bsync);
+		up(&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;
+
+		down(&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:
+		up(&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 HAVE_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));
+		strncpy(cap->driver, "zoran", sizeof(cap->driver));
+		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 < zoran_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 == zoran_num_formats)
+			return -EINVAL;
+
+		memset(fmt, 0, sizeof(*fmt));
+		fmt->index = index;
+		fmt->type = type;
+		strncpy(fmt->description, zoran_formats[i].name, 31);
+		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:
+
+			down(&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;
+
+			up(&zr->resource_lock);
+
+			break;
+
+		case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+		case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+
+			down(&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_buffers.buffer_size;
+				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;
+			}
+
+			up(&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);
+			down(&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);
+			up(&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) {
+				down(&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:
+				up(&zr->resource_lock);
+			} else {
+				for (i = 0; i < zoran_num_formats; i++)
+					if (fmt->fmt.pix.pixelformat ==
+					    zoran_formats[i].fourcc)
+						break;
+				if (i == zoran_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;
+				}
+				down(&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_buffers.buffer_size	/*zr->gbpl * zr->gheight */
+				    ;
+				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:
+				up(&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));
+		down(&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;
+		up(&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 < zoran_num_formats; i++)
+			if (zoran_formats[i].fourcc == fb->fmt.pixelformat)
+				break;
+		if (i == zoran_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;
+		}
+
+		down(&zr->resource_lock);
+		res =
+		    setup_fbuffer(file, fb->base, &zoran_formats[i],
+				  fb->fmt.width, fb->fmt.height,
+				  fb->fmt.bytesperline);
+		up(&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);
+
+		down(&zr->resource_lock);
+		res = setup_overlay(file, *on);
+		up(&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;
+		}
+
+		down(&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:
+		up(&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;
+
+		down(&zr->resource_lock);
+		res = zoran_v4l2_buffer_status(file, buf, buf->index);
+		up(&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);
+
+		down(&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:
+		up(&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);
+
+		down(&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:
+		up(&zr->resource_lock);
+
+		return res;
+	}
+		break;
+
+	case VIDIOC_STREAMON:
+	{
+		int res = 0;
+
+		dprintk(3, KERN_DEBUG "%s: VIDIOC_STREAMON\n", ZR_DEVNAME(zr));
+
+		down(&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:
+		up(&zr->resource_lock);
+
+		return res;
+	}
+		break;
+
+	case VIDIOC_STREAMOFF:
+	{
+		int i, res = 0;
+
+		dprintk(3, KERN_DEBUG "%s: VIDIOC_STREAMOFF\n", ZR_DEVNAME(zr));
+
+		down(&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)
+				zr36057_set_memgrab(zr, 0);
+
+			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:
+		up(&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", 31);
+			break;
+		case V4L2_CID_CONTRAST:
+			strncpy(ctrl->name, "Contrast", 31);
+			break;
+		case V4L2_CID_SATURATION:
+			strncpy(ctrl->name, "Saturation", 31);
+			break;
+		case V4L2_CID_HUE:
+			strncpy(ctrl->name, "Hue", 31);
+			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;
+
+		down(&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;
+		}
+		up(&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;
+		}
+
+		down(&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);
+
+		up(&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", 31);
+				return 0;
+			} else
+				return -EINVAL;
+		}
+		switch (std->index) {
+		case 0:
+			std->id = V4L2_STD_PAL;
+			strncpy(std->name, "PAL", 31);
+			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", 31);
+			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", 31);
+			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));
+
+		down(&zr->resource_lock);
+		norm = zr->norm;
+		up(&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)
+			norm = VIDEO_MODE_PAL;
+		else if (*std == V4L2_STD_NTSC)
+			norm = VIDEO_MODE_NTSC;
+		else if (*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;
+		}
+
+		down(&zr->resource_lock);
+		if ((res = zoran_set_norm(zr, norm)))
+			goto sstd_unlock_and_return;
+
+		res = wait_grab_pending(zr);
+	sstd_unlock_and_return:
+		up(&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 */
+		down(&zr->resource_lock);
+		decoder_command(zr, DECODER_GET_STATUS, &status);
+		up(&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));
+
+		down(&zr->resource_lock);
+		*input = zr->input;
+		up(&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);
+
+		down(&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:
+		up(&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", 31);
+
+		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;
+
+		down(&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:
+		up(&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;
+
+		down(&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:
+		up(&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);
+
+		down(&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:
+		up(&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));
+
+		down(&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;
+
+		up(&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;
+
+		down(&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:
+		up(&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:
+			down(&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;
+
+			up(&zr->resource_lock);
+			break;
+
+		case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+		case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+			if (fmt->fmt.pix.bytesperline > 0)
+				return -EINVAL;
+
+			down(&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 < zoran_num_formats; i++)
+					if (zoran_formats[i].fourcc ==
+					    fmt->fmt.pix.pixelformat)
+						break;
+				if (i == zoran_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:
+			up(&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;
+	wait_queue_head_t *queue = NULL;
+	int res = 0, frame;
+
+	/* 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
+	 */
+
+	down(&zr->resource_lock);
+
+	switch (fh->map_mode) {
+	case ZORAN_MAP_MODE_RAW:
+		if (fh->v4l_buffers.active == ZORAN_FREE ||
+		    zr->v4l_pend_head == zr->v4l_pend_tail) {
+			dprintk(1,
+				"%s: zoran_poll() - no buffers queued\n",
+				ZR_DEVNAME(zr));
+			res = POLLNVAL;
+			goto poll_unlock_and_return;
+		}
+		queue = &zr->v4l_capq;
+		frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
+		poll_wait(file, queue, wait);
+		if (fh->v4l_buffers.buffer[frame].state == BUZ_STATE_DONE)
+			res = POLLIN | POLLRDNORM;
+		break;
+
+	case ZORAN_MAP_MODE_JPG_REC:
+	case ZORAN_MAP_MODE_JPG_PLAY:
+		if (fh->jpg_buffers.active == ZORAN_FREE ||
+		    zr->jpg_que_head == zr->jpg_que_tail) {
+			dprintk(1,
+				"%s: zoran_poll() - no buffers queued\n",
+				ZR_DEVNAME(zr));
+			res = POLLNVAL;
+			goto poll_unlock_and_return;
+		}
+		queue = &zr->jpg_capq;
+		frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];
+		poll_wait(file, queue, wait);
+		if (fh->jpg_buffers.buffer[frame].state == BUZ_STATE_DONE) {
+			if (fh->map_mode == ZORAN_MAP_MODE_JPG_REC)
+				res = POLLIN | POLLRDNORM;
+			else
+				res = POLLOUT | POLLWRNORM;
+		}
+		break;
+
+	default:
+		dprintk(1,
+			"%s: zoran_poll() - internal error, unknown map_mode=%d\n",
+			ZR_DEVNAME(zr), fh->map_mode);
+		res = POLLNVAL;
+		goto poll_unlock_and_return;
+	}
+
+poll_unlock_and_return:
+	up(&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) {
+				down(&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;
+
+				up(&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) {
+				down(&zr->resource_lock);
+
+				if (fh->v4l_buffers.active != ZORAN_FREE) {
+					zr36057_set_memgrab(zr, 0);
+					zr->v4l_buffers.allocated = 0;
+					zr->v4l_buffers.active =
+					    fh->v4l_buffers.active =
+					    ZORAN_FREE;
+				}
+				//v4l_fbuffer_free(file);
+				fh->v4l_buffers.allocated = 0;
+				fh->v4l_buffers.ready_to_be_freed = 1;
+
+				up(&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 */
+		down(&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:
+		up(&zr->resource_lock);
+
+		break;
+
+	case ZORAN_MAP_MODE_RAW:
+
+		down(&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:
+		up(&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 struct file_operations zoran_fops = {
+	.owner = THIS_MODULE,
+	.open = zoran_open,
+	.release = zoran_close,
+	.ioctl = zoran_ioctl,
+	.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 HAVE_V4L2
+	.type2 = ZORAN_V4L2_VID_FLAGS,
+#endif
+	.hardware = ZORAN_HARDWARE,
+	.fops = &zoran_fops,
+	.release = &zoran_vdev_release,
+	.minor = -1
+};
+