Merge with 2.3.10.

1 files changed, 3478 insertions, 0 deletions

diff --git a/drivers/char/buz.c b/drivers/char/buz.c
new file mode 100644
index 000000000..1a37e2944
--- /dev/null
+++ b/drivers/char/buz.c
@@ -0,0 +1,3478 @@
+#define MAX_KMALLOC_MEM (512*1024)
+/*
+   buz - Iomega Buz driver version 1.0
+
+   Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
+
+   based on
+
+   buz.0.0.3 Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+
+   and
+
+   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/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/malloc.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <linux/sched.h>
+#include <asm/segment.h>
+#include <linux/types.h>
+#include <linux/wrapper.h>
+#include <asm/spinlock.h>
+
+#include <linux/videodev.h>
+
+#include <linux/version.h>
+#include <asm/uaccess.h>
+
+#include <linux/i2c.h>
+#include "buz.h"
+#include <linux/video_decoder.h>
+#include <linux/video_encoder.h>
+
+#define IRQ_MASK ( ZR36057_ISR_GIRQ0 | /* ZR36057_ISR_GIRQ1 | ZR36057_ISR_CodRepIRQ | */ ZR36057_ISR_JPEGRepIRQ )
+#define GPIO_MASK 0xdf
+
+/*
+ 
+ BUZ
+ 
+   GPIO0 = 1, take board out of reset
+   GPIO1 = 1, take JPEG codec out of sleep mode
+   GPIO3 = 1, deassert FRAME# to 36060
+   
+
+   GIRQ0 signals a vertical sync of the video signal
+   GIRQ1 signals that ZR36060's DATERR# line is asserted.
+
+   SAA7111A
+
+   In their infinite wisdom, the Iomega engineers decided to
+   use the same input line for composite and S-Video Color,
+   although there are two entries not connected at all!
+   Through this ingenious strike, it is not possible to
+   keep two running video sources connected at the same time
+   to Composite and S-VHS input!
+
+   mode 0 - N/C
+   mode 1 - S-Video Y
+   mode 2 - noise or something I don't know
+   mode 3 - Composite and S-Video C
+   mode 4 - N/C
+   mode 5 - S-Video (gain C independently selectable of gain Y)
+   mode 6 - N/C
+   mode 7 - S-Video (gain C adapted to gain Y)
+ */
+
+#define MAJOR_VERSION 1		/* driver major version */
+#define MINOR_VERSION 0		/* driver minor version */
+
+#define BUZ_NAME      "Iomega BUZ V-1.0"	/* name of the driver */
+
+#define DEBUG(x)		/* Debug driver */
+#define IDEBUG(x)		/* Debug interrupt handler */
+#define IOCTL_DEBUG(x)
+
+
+/* The parameters for this driver */
+
+/*
+   The video mem address of the video card.
+   The driver has a little database for some videocards
+   to determine it from there. If your video card is not in there
+   you have either to give it to the driver as a parameter
+   or set in in a VIDIOCSFBUF ioctl
+ */
+
+static unsigned long vidmem = 0;	/* Video memory base address */
+
+/* Special purposes only: */
+
+static int triton = 0;		/* 0=no, 1=yes */
+static int natoma = 0;		/* 0=no, 1=yes */
+
+/*
+   Number and size of grab buffers for Video 4 Linux
+   The vast majority of applications should not need more than 2,
+   the very popular BTTV driver actually does ONLY have 2.
+   Time sensitive applications might need more, the maximum
+   is VIDEO_MAX_FRAME (defined in <linux/videodev.h>).
+
+   The size is set so that the maximum possible request
+   can be satisfied. Decrease  it, if bigphys_area alloc'd
+   memory is low. If you don't have the bigphys_area patch,
+   set it to 128 KB. Will you allow only to grab small
+   images with V4L, but that's better than nothing.
+
+   v4l_bufsize has to be given in KB !
+
+ */
+
+static int v4l_nbufs = 2;
+static int v4l_bufsize = 128;	/* Everybody should be able to work with this setting */
+
+/*
+   Default input and video norm at startup of the driver.
+ */
+
+static int default_input = 0;	/* 0=Composite, 1=S-VHS */
+static int default_norm = 0;	/* 0=PAL, 1=NTSC */
+
+MODULE_PARM(vidmem, "i");
+MODULE_PARM(triton, "i");
+MODULE_PARM(natoma, "i");
+MODULE_PARM(v4l_nbufs, "i");
+MODULE_PARM(v4l_bufsize, "i");
+MODULE_PARM(default_input, "i");
+MODULE_PARM(default_norm, "i");
+
+/* Anybody who uses more than four? */
+#define BUZ_MAX 4
+
+static int zoran_num;		/* number of Buzs in use */
+static struct zoran zoran[BUZ_MAX];
+
+/* forward references */
+
+static void v4l_fbuffer_free(struct zoran *zr);
+static void jpg_fbuffer_free(struct zoran *zr);
+static void zoran_feed_stat_com(struct zoran *zr);
+
+
+
+/*
+ *   Allocate the V4L grab buffers
+ *
+ *   These have to be pysically contiguous.
+ *   If v4l_bufsize <= MAX_KMALLOC_MEM we use kmalloc
+ */
+
+static int v4l_fbuffer_alloc(struct zoran *zr)
+{
+	int i, off;
+	unsigned char *mem;
+
+	for (i = 0; i < v4l_nbufs; i++) {
+		if (zr->v4l_gbuf[i].fbuffer)
+			printk(KERN_WARNING "%s: v4l_fbuffer_alloc: buffer %d allready allocated ?\n", zr->name, i);
+
+		if (v4l_bufsize <= MAX_KMALLOC_MEM) {
+			/* Use kmalloc */
+
+			mem = (unsigned char *) kmalloc(v4l_bufsize, GFP_KERNEL);
+			if (mem == 0) {
+				printk(KERN_ERR "%s: kmalloc for V4L bufs failed\n", zr->name);
+				v4l_fbuffer_free(zr);
+				return -ENOBUFS;
+			}
+			zr->v4l_gbuf[i].fbuffer = mem;
+			zr->v4l_gbuf[i].fbuffer_phys = virt_to_phys(mem);
+			zr->v4l_gbuf[i].fbuffer_bus = virt_to_bus(mem);
+			for (off = 0; off < v4l_bufsize; off += PAGE_SIZE)
+				mem_map_reserve(MAP_NR(mem + off));
+			DEBUG(printk(BUZ_INFO ": V4L frame %d mem 0x%x (bus: 0x%x=%d)\n", i, mem, virt_to_bus(mem), virt_to_bus(mem)));
+		} else {
+			return -ENOBUFS;
+		}
+	}
+
+	return 0;
+}
+
+/* free the V4L grab buffers */
+static void v4l_fbuffer_free(struct zoran *zr)
+{
+	int i, off;
+	unsigned char *mem;
+
+	for (i = 0; i < v4l_nbufs; i++) {
+		if (!zr->v4l_gbuf[i].fbuffer)
+			continue;
+
+		mem = zr->v4l_gbuf[i].fbuffer;
+		for (off = 0; off < v4l_bufsize; off += PAGE_SIZE)
+			mem_map_unreserve(MAP_NR(mem + off));
+		kfree((void *) zr->v4l_gbuf[i].fbuffer);
+		zr->v4l_gbuf[i].fbuffer = NULL;
+	}
+}
+
+/*
+ *   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_free_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_free_page, but delivers you
+ *       virtual addresses) and then again have to make a lot of efforts
+ *       to get the physical address.
+ *
+ */
+
+static int jpg_fbuffer_alloc(struct zoran *zr)
+{
+	int i, j, off, alloc_contig;
+	unsigned long mem;
+
+	/* Decide if we should alloc contiguous or fragmented memory */
+	/* This has to be identical in jpg_fbuffer_alloc and jpg_fbuffer_free */
+
+	alloc_contig = (zr->jpg_bufsize < MAX_KMALLOC_MEM);
+
+	for (i = 0; i < zr->jpg_nbufs; i++) {
+		if (zr->jpg_gbuf[i].frag_tab)
+			printk(KERN_WARNING "%s: jpg_fbuffer_alloc: buffer %d allready allocated ???\n", zr->name, i);
+
+		/* Allocate fragment table for this buffer */
+
+		mem = get_free_page(GFP_KERNEL);
+		if (mem == 0) {
+			printk(KERN_ERR "%s: jpg_fbuffer_alloc: get_free_page (frag_tab) failed for buffer %d\n", zr->name, i);
+			jpg_fbuffer_free(zr);
+			return -ENOBUFS;
+		}
+		memset((void *) mem, 0, PAGE_SIZE);
+		zr->jpg_gbuf[i].frag_tab = (u32 *) mem;
+		zr->jpg_gbuf[i].frag_tab_bus = virt_to_bus((void *) mem);
+
+		if (alloc_contig) {
+			mem = (unsigned long) kmalloc(zr->jpg_bufsize, GFP_KERNEL);
+			if (mem == 0) {
+				jpg_fbuffer_free(zr);
+				return -ENOBUFS;
+			}
+			zr->jpg_gbuf[i].frag_tab[0] = virt_to_bus((void *) mem);
+			zr->jpg_gbuf[i].frag_tab[1] = ((zr->jpg_bufsize / 4) << 1) | 1;
+			for (off = 0; off < zr->jpg_bufsize; off += PAGE_SIZE)
+				mem_map_reserve(MAP_NR(mem + off));
+		} else {
+			/* jpg_bufsize is alreay page aligned */
+			for (j = 0; j < zr->jpg_bufsize / PAGE_SIZE; j++) {
+				mem = get_free_page(GFP_KERNEL);
+				if (mem == 0) {
+					jpg_fbuffer_free(zr);
+					return -ENOBUFS;
+				}
+				zr->jpg_gbuf[i].frag_tab[2 * j] = virt_to_bus((void *) mem);
+				zr->jpg_gbuf[i].frag_tab[2 * j + 1] = (PAGE_SIZE / 4) << 1;
+				mem_map_reserve(MAP_NR(mem));
+			}
+
+			zr->jpg_gbuf[i].frag_tab[2 * j - 1] |= 1;
+		}
+	}
+
+	DEBUG(printk("jpg_fbuffer_alloc: %d KB allocated\n",
+		     (zr->jpg_nbufs * zr->jpg_bufsize) >> 10));
+	zr->jpg_buffers_allocated = 1;
+	return 0;
+}
+
+/* free the MJPEG grab buffers */
+static void jpg_fbuffer_free(struct zoran *zr)
+{
+	int i, j, off, alloc_contig;
+	unsigned char *mem;
+
+	/* Decide if we should alloc contiguous or fragmented memory */
+	/* This has to be identical in jpg_fbuffer_alloc and jpg_fbuffer_free */
+
+	alloc_contig = (zr->jpg_bufsize < MAX_KMALLOC_MEM);
+
+	for (i = 0; i < zr->jpg_nbufs; i++) {
+		if (!zr->jpg_gbuf[i].frag_tab)
+			continue;
+
+		if (alloc_contig) {
+			if (zr->jpg_gbuf[i].frag_tab[0]) {
+				mem = (unsigned char *) bus_to_virt(zr->jpg_gbuf[i].frag_tab[0]);
+				for (off = 0; off < zr->jpg_bufsize; off += PAGE_SIZE)
+					mem_map_unreserve(MAP_NR(mem + off));
+				kfree((void *) mem);
+				zr->jpg_gbuf[i].frag_tab[0] = 0;
+				zr->jpg_gbuf[i].frag_tab[1] = 0;
+			}
+		} else {
+			for (j = 0; j < zr->jpg_bufsize / PAGE_SIZE; j++) {
+				if (!zr->jpg_gbuf[i].frag_tab[2 * j])
+					break;
+				mem_map_unreserve(MAP_NR(bus_to_virt(zr->jpg_gbuf[i].frag_tab[2 * j])));
+				free_page((unsigned long) bus_to_virt(zr->jpg_gbuf[i].frag_tab[2 * j]));
+				zr->jpg_gbuf[i].frag_tab[2 * j] = 0;
+				zr->jpg_gbuf[i].frag_tab[2 * j + 1] = 0;
+			}
+		}
+
+		free_page((unsigned long) zr->jpg_gbuf[i].frag_tab);
+		zr->jpg_gbuf[i].frag_tab = NULL;
+	}
+	zr->jpg_buffers_allocated = 0;
+}
+
+
+/* ----------------------------------------------------------------------- */
+
+/* I2C functions                                                           */
+
+#define I2C_DELAY   10
+
+
+/* software I2C functions */
+
+static void i2c_setlines(struct i2c_bus *bus, int ctrl, int data)
+{
+	struct zoran *zr = (struct zoran *) bus->data;
+	btwrite((data << 1) | ctrl, ZR36057_I2CBR);
+	btread(ZR36057_I2CBR);
+	udelay(I2C_DELAY);
+}
+
+static int i2c_getdataline(struct i2c_bus *bus)
+{
+	struct zoran *zr = (struct zoran *) bus->data;
+	return (btread(ZR36057_I2CBR) >> 1) & 1;
+}
+
+void attach_inform(struct i2c_bus *bus, int id)
+{
+	DEBUG(struct zoran *zr = (struct zoran *) bus->data);
+	DEBUG(printk(BUZ_DEBUG "-%u: i2c attach %02x\n", zr->id, id));
+}
+
+void detach_inform(struct i2c_bus *bus, int id)
+{
+	DEBUG(struct zoran *zr = (struct zoran *) bus->data);
+	DEBUG(printk(BUZ_DEBUG "-%u: i2c detach %02x\n", zr->id, id));
+}
+
+static struct i2c_bus zoran_i2c_bus_template =
+{
+	"zr36057",
+	I2C_BUSID_BT848,
+	NULL,
+
+	SPIN_LOCK_UNLOCKED,
+
+	attach_inform,
+	detach_inform,
+
+	i2c_setlines,
+	i2c_getdataline,
+	NULL,
+	NULL,
+};
+
+
+/* ----------------------------------------------------------------------- */
+
+static void GPIO(struct zoran *zr, unsigned bit, unsigned value)
+{
+	u32 reg;
+	u32 mask;
+
+	mask = 1 << (24 + bit);
+	reg = btread(ZR36057_GPPGCR1) & ~mask;
+	if (value) {
+		reg |= mask;
+	}
+	btwrite(reg, ZR36057_GPPGCR1);
+	/* Stop any PCI posting on the GPIO bus */
+	btread(ZR36057_I2CBR);
+}
+
+
+/*
+ *   Set the registers for the size we have specified. Don't bother
+ *   trying to understand this without the ZR36057 manual in front of
+ *   you [AC].
+ *
+ *   PS: The manual is free for download in .pdf format from
+ *   www.zoran.com - nicely done those folks.
+ */
+
+struct tvnorm {
+	u16 Wt, Wa, Ht, Ha, HStart, VStart;
+};
+
+static struct tvnorm tvnorms[] =
+{
+   /* PAL-BDGHI */
+	{864, 720, 625, 576, 31, 16},
+   /* NTSC */
+	{858, 720, 525, 480, 21, 8},
+};
+#define TVNORMS (sizeof(tvnorms) / sizeof(tvnorm))
+
+static int format2bpp(int format)
+{
+	int bpp;
+
+	/* Determine the number of bytes per pixel for the video format requested */
+
+	switch (format) {
+
+	case VIDEO_PALETTE_YUV422:
+		bpp = 2;
+		break;
+
+	case VIDEO_PALETTE_RGB555:
+		bpp = 2;
+		break;
+
+	case VIDEO_PALETTE_RGB565:
+		bpp = 2;
+		break;
+
+	case VIDEO_PALETTE_RGB24:
+		bpp = 3;
+		break;
+
+	case VIDEO_PALETTE_RGB32:
+		bpp = 4;
+		break;
+
+	default:
+		bpp = 0;
+	}
+
+	return bpp;
+}
+
+/*
+ * set geometry
+ */
+static void zr36057_set_vfe(struct zoran *zr, int video_width, int video_height,
+			    unsigned int video_format)
+{
+	struct tvnorm *tvn;
+	unsigned HStart, HEnd, VStart, VEnd;
+	unsigned DispMode;
+	unsigned VidWinWid, VidWinHt;
+	unsigned hcrop1, hcrop2, vcrop1, vcrop2;
+	unsigned Wa, We, Ha, He;
+	unsigned X, Y, HorDcm, VerDcm;
+	u32 reg;
+	unsigned mask_line_size;
+
+	if (zr->params.norm < 0 || zr->params.norm > 1) {
+		printk(KERN_ERR "%s: set_vfe: video_norm = %d not valid\n", zr->name,  zr->params.norm);
+		return;
+	}
+	if (video_width < BUZ_MIN_WIDTH || video_height < BUZ_MIN_HEIGHT) {
+		printk(KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n", zr->name, video_width, video_height);
+		return;
+	}
+	tvn = &tvnorms[zr->params.norm];
+
+	Wa = tvn->Wa;
+	Ha = tvn->Ha;
+
+	/* if window has more than half of active height,
+	   switch on interlacing - we want the full information */
+
+	zr->video_interlace = (video_height > Ha / 2);
+
+/**** zr36057 ****/
+
+	/* horizontal */
+	VidWinWid = video_width;
+	X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa;
+	We = (VidWinWid * 64) / X;
+	HorDcm = 64 - X;
+	hcrop1 = 2 * ((tvn->Wa - We) / 4);
+	hcrop2 = tvn->Wa - We - hcrop1;
+	HStart = tvn->HStart | 1;
+	HEnd = HStart + tvn->Wa - 1;
+	HStart += hcrop1;
+	HEnd -= hcrop2;
+	reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
+	    | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
+	reg |= ZR36057_VFEHCR_HSPol;
+	btwrite(reg, ZR36057_VFEHCR);
+
+	/* Vertical */
+	DispMode = !zr->video_interlace;
+	VidWinHt = DispMode ? video_height : video_height / 2;
+	Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha;
+	He = (VidWinHt * 64) / Y;
+	VerDcm = 64 - Y;
+	vcrop1 = (tvn->Ha / 2 - He) / 2;
+	vcrop2 = tvn->Ha / 2 - He - vcrop1;
+	VStart = tvn->VStart;
+	VEnd = VStart + tvn->Ha / 2 - 1;
+	VStart += vcrop1;
+	VEnd -= vcrop2;
+	reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
+	    | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
+	reg |= ZR36057_VFEVCR_VSPol;
+	btwrite(reg, ZR36057_VFEVCR);
+
+	/* scaler and pixel format */
+	reg = 0			// ZR36057_VFESPFR_ExtFl /* Trying to live without ExtFl */
+	     | (HorDcm << ZR36057_VFESPFR_HorDcm)
+	    | (VerDcm << ZR36057_VFESPFR_VerDcm)
+	    | (DispMode << ZR36057_VFESPFR_DispMode)
+	    | ZR36057_VFESPFR_LittleEndian;
+	/* RJ: I don't know, why the following has to be the opposite
+	   of the corresponding ZR36060 setting, but only this way
+	   we get the correct colors when uncompressing to the screen  */
+	reg |= ZR36057_VFESPFR_VCLKPol;
+	/* RJ: Don't know if that is needed for NTSC also */
+	reg |= ZR36057_VFESPFR_TopField;
+	switch (video_format) {
+
+	case VIDEO_PALETTE_YUV422:
+		reg |= ZR36057_VFESPFR_YUV422;
+		break;
+
+	case VIDEO_PALETTE_RGB555:
+		reg |= ZR36057_VFESPFR_RGB555 | ZR36057_VFESPFR_ErrDif;
+		break;
+
+	case VIDEO_PALETTE_RGB565:
+		reg |= ZR36057_VFESPFR_RGB565 | ZR36057_VFESPFR_ErrDif;
+		break;
+
+	case VIDEO_PALETTE_RGB24:
+		reg |= ZR36057_VFESPFR_RGB888 | ZR36057_VFESPFR_Pack24;
+		break;
+
+	case VIDEO_PALETTE_RGB32:
+		reg |= ZR36057_VFESPFR_RGB888;
+		break;
+
+	default:
+		printk(KERN_INFO "%s: Unknown color_fmt=%x\n", zr->name, video_format);
+		return;
+
+	}
+	if (HorDcm >= 48) {
+		reg |= 3 << ZR36057_VFESPFR_HFilter;	/* 5 tap filter */
+	} else if (HorDcm >= 32) {
+		reg |= 2 << ZR36057_VFESPFR_HFilter;	/* 4 tap filter */
+	} else if (HorDcm >= 16) {
+		reg |= 1 << ZR36057_VFESPFR_HFilter;	/* 3 tap filter */
+	}
+	btwrite(reg, ZR36057_VFESPFR);
+
+	/* display configuration */
+
+	reg = (16 << ZR36057_VDCR_MinPix)
+	    | (VidWinHt << ZR36057_VDCR_VidWinHt)
+	    | (VidWinWid << ZR36057_VDCR_VidWinWid);
+	if (triton)
+		reg &= ~ZR36057_VDCR_Triton;
+	else
+		reg |= ZR36057_VDCR_Triton;
+	btwrite(reg, ZR36057_VDCR);
+
+	/* Write overlay clipping mask data, but don't enable overlay clipping */
+	/* RJ: since this makes only sense on the screen, we use 
+	   zr->window.width instead of video_width */
+
+	mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
+	reg = virt_to_bus(zr->overlay_mask);
+	btwrite(reg, ZR36057_MMTR);
+	reg = virt_to_bus(zr->overlay_mask + mask_line_size);
+	btwrite(reg, ZR36057_MMBR);
+	reg = mask_line_size - (zr->window.width + 31) / 32;
+	if (DispMode == 0)
+		reg += mask_line_size;
+	reg <<= ZR36057_OCR_MaskStride;
+	btwrite(reg, ZR36057_OCR);
+
+}
+
+/*
+ * Switch overlay on or off
+ */
+
+static void zr36057_overlay(struct zoran *zr, int on)
+{
+	int fmt, bpp;
+	u32 reg;
+
+	if (on) {
+		/* do the necessary settings ... */
+
+		btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);	/* switch it off first */
+
+		switch (zr->buffer.depth) {
+		case 15:
+			fmt = VIDEO_PALETTE_RGB555;
+			bpp = 2;
+			break;
+		case 16:
+			fmt = VIDEO_PALETTE_RGB565;
+			bpp = 2;
+			break;
+		case 24:
+			fmt = VIDEO_PALETTE_RGB24;
+			bpp = 3;
+			break;
+		case 32:
+			fmt = VIDEO_PALETTE_RGB32;
+			bpp = 4;
+			break;
+		default:
+			fmt = 0;
+			bpp = 0;
+		}
+
+		zr36057_set_vfe(zr, zr->window.width, zr->window.height, fmt);
+
+		/* Start and length of each line MUST be 4-byte aligned.
+		   This should be allready checked before the call to this routine.
+		   All error messages are internal driver checking only! */
+
+		/* video display top and bottom registers */
+
+		reg = (u32) zr->buffer.base
+		    + zr->window.x * bpp
+		    + zr->window.y * zr->buffer.bytesperline;
+		btwrite(reg, ZR36057_VDTR);
+		if (reg & 3)
+			printk(KERN_ERR "%s: zr36057_overlay: video_address not aligned\n", zr->name);
+		if (zr->video_interlace)
+			reg += zr->buffer.bytesperline;
+		btwrite(reg, ZR36057_VDBR);
+
+		/* video stride, status, and frame grab register */
+
+		reg = zr->buffer.bytesperline - zr->window.width * bpp;
+		if (zr->video_interlace)
+			reg += zr->buffer.bytesperline;
+		if (reg & 3)
+			printk(KERN_ERR "%s: zr36057_overlay: video_stride not aligned\n", zr->name);
+		reg = (reg << ZR36057_VSSFGR_DispStride);
+		reg |= ZR36057_VSSFGR_VidOvf;	/* clear overflow status */
+		btwrite(reg, ZR36057_VSSFGR);
+
+		/* Set overlay clipping */
+
+		if (zr->window.clipcount)
+			btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
+
+		/* ... and switch it on */
+
+		btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
+	} else {
+		/* Switch it off */
+
+		btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
+	}
+}
+
+/*
+ * The overlay mask has one bit for each pixel on a scan line,
+ *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
+ */
+static void write_overlay_mask(struct zoran *zr, struct video_clip *vp, int count)
+{
+	unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
+	u32 *mask;
+	int x, y, width, height;
+	unsigned i, j, k;
+	u32 reg;
+
+	/* fill mask with one bits */
+	memset(zr->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
+	reg = 0;
+
+	for (i = 0; i < count; ++i) {
+		/* pick up local copy of clip */
+		x = vp[i].x;
+		y = vp[i].y;
+		width = vp[i].width;
+		height = vp[i].height;
+
+		/* trim clips that extend beyond the window */
+		if (x < 0) {
+			width += x;
+			x = 0;
+		}
+		if (y < 0) {
+			height += y;
+			y = 0;
+		}
+		if (x + width > zr->window.width) {
+			width = zr->window.width - x;
+		}
+		if (y + height > zr->window.height) {
+			height = zr->window.height - y;
+		}
+		/* ignore degenerate clips */
+		if (height <= 0) {
+			continue;
+		}
+		if (width <= 0) {
+			continue;
+		}
+		/* apply clip for each scan line */
+		for (j = 0; j < height; ++j) {
+			/* reset bit for each pixel */
+			/* this can be optimized later if need be */
+			mask = zr->overlay_mask + (y + j) * mask_line_size;
+			for (k = 0; k < width; ++k) {
+				mask[(x + k) / 32] &= ~((u32) 1 << (x + k) % 32);
+			}
+		}
+	}
+}
+
+/* Enable/Disable uncompressed memory grabbing of the 36057 */
+
+static void zr36057_set_memgrab(struct zoran *zr, int mode)
+{
+	if (mode) {
+		if (btread(ZR36057_VSSFGR) & (ZR36057_VSSFGR_SnapShot | ZR36057_VSSFGR_FrameGrab))
+			printk(KERN_WARNING "%s: zr36057_set_memgrab_on with SnapShot or FrameGrab on ???\n", zr->name);
+
+		/* switch on VSync interrupts */
+
+		btwrite(IRQ_MASK, ZR36057_ISR);		// Clear Interrupts
+
+		btor(ZR36057_ICR_GIRQ0, ZR36057_ICR);
+
+		/* enable SnapShot */
+
+		btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
+
+		/* Set zr36057 video front end  and enable video */
+
+#ifdef XAWTV_HACK
+		zr36057_set_vfe(zr, zr->gwidth > 720 ? 720 : zr->gwidth, zr->gheight, zr->gformat);
+#else
+		zr36057_set_vfe(zr, zr->gwidth, zr->gheight, zr->gformat);
+#endif
+
+		zr->v4l_memgrab_active = 1;
+	} else {
+		zr->v4l_memgrab_active = 0;
+
+		/* switch off VSync interrupts */
+
+		btand(~ZR36057_ICR_GIRQ0, ZR36057_ICR);
+
+		/* reenable grabbing to screen if it was running */
+
+		if (zr->v4l_overlay_active) {
+			zr36057_overlay(zr, 1);
+		} else {
+			btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
+			btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
+		}
+	}
+}
+
+static int wait_grab_pending(struct zoran *zr)
+{
+	unsigned long flags;
+
+	/* wait until all pending grabs are finished */
+
+	if (!zr->v4l_memgrab_active)
+		return 0;
+
+	while (zr->v4l_pend_tail != zr->v4l_pend_head) {
+		interruptible_sleep_on(&zr->v4l_capq);
+		if (signal_pending(current))
+			return -ERESTARTSYS;
+	}
+
+	spin_lock_irqsave(&zr->lock, flags);
+	zr36057_set_memgrab(zr, 0);
+	spin_unlock_irqrestore(&zr->lock, flags);
+
+	return 0;
+}
+
+/*
+ *   V4L Buffer grabbing
+ */
+
+static int v4l_grab(struct zoran *zr, struct video_mmap *mp)
+{
+	unsigned long flags;
+	int res, bpp;
+
+	/*
+	 * There is a long list of limitations to what is allowed to be grabbed
+	 * We don't output error messages her, since some programs (e.g. xawtv)
+	 * just try several settings to find out what is valid or not.
+	 */
+
+	/* No grabbing outside the buffer range! */
+
+	if (mp->frame >= v4l_nbufs || mp->frame < 0)
+		return -EINVAL;
+
+	/* Check size and format of the grab wanted */
+
+	if (mp->height < BUZ_MIN_HEIGHT || mp->width < BUZ_MIN_WIDTH)
+		return -EINVAL;
+	if (mp->height > BUZ_MAX_HEIGHT || mp->width > BUZ_MAX_WIDTH)
+		return -EINVAL;
+
+	bpp = format2bpp(mp->format);
+	if (bpp == 0)
+		return -EINVAL;
+
+	/* Check against available buffer size */
+
+	if (mp->height * mp->width * bpp > v4l_bufsize)
+		return -EINVAL;
+
+	/* The video front end needs 4-byte alinged line sizes */
+
+	if ((bpp == 2 && (mp->width & 1)) || (bpp == 3 && (mp->width & 3)))
+		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->gwidth != mp->width || zr->gheight != mp->height || zr->gformat != mp->format)) {
+		res = wait_grab_pending(zr);
+		if (res)
+			return res;
+	}
+	zr->gwidth = mp->width;
+	zr->gheight = mp->height;
+	zr->gformat = mp->format;
+	zr->gbpl = bpp * zr->gwidth;
+
+
+	spin_lock_irqsave(&zr->lock, flags);
+
+	/* make sure a grab isn't going on currently with this buffer */
+
+	switch (zr->v4l_gbuf[mp->frame].state) {
+
+	default:
+	case BUZ_STATE_PEND:
+		res = -EBUSY;	/* what are you doing? */
+		break;
+
+	case BUZ_STATE_USER:
+	case BUZ_STATE_DONE:
+		/* 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] = mp->frame;
+		zr->v4l_gbuf[mp->frame].state = BUZ_STATE_PEND;
+		res = 0;
+		break;
+
+	}
+
+	/* put the 36057 into frame grabbing mode */
+
+	if (!res && !zr->v4l_memgrab_active)
+		zr36057_set_memgrab(zr, 1);
+
+	spin_unlock_irqrestore(&zr->lock, flags);
+
+	return res;
+}
+
+/*
+ * Sync on a V4L buffer
+ */
+
+static int v4l_sync(struct zoran *zr, int frame)
+{
+	unsigned long flags;
+
+
+	/* check passed-in frame number */
+	if (frame >= v4l_nbufs || frame < 0) {
+		printk(KERN_ERR "%s: v4l_sync: frame %d is invalid\n", zr->name, frame);
+		return -EINVAL;
+	}
+	/* Check if is buffer was queued at all */
+
+	if (zr->v4l_gbuf[frame].state == BUZ_STATE_USER) {
+//		printk(KERN_ERR "%s: v4l_sync: Trying to sync on a buffer which was not queued?\n", zr->name);
+		return -EINVAL;
+	}
+	/* wait on this buffer to get ready */
+
+	while (zr->v4l_gbuf[frame].state == BUZ_STATE_PEND) {
+		interruptible_sleep_on(&zr->v4l_capq);
+		if (signal_pending(current))
+			return -ERESTARTSYS;
+	}
+
+	/* buffer should now be in BUZ_STATE_DONE */
+
+	if (zr->v4l_gbuf[frame].state != BUZ_STATE_DONE)
+		printk(KERN_ERR "%s: v4l_sync - internal error\n", zr->name);
+
+	/* Check if streaming capture has finished */
+
+	spin_lock_irqsave(&zr->lock, flags);
+
+	if (zr->v4l_pend_tail == zr->v4l_pend_head)
+		zr36057_set_memgrab(zr, 0);
+
+	spin_unlock_irqrestore(&zr->lock, flags);
+
+	return 0;
+}
+/*****************************************************************************
+ *                                                                           *
+ *  Set up the Buz-specific MJPEG part                                       *
+ *                                                                           *
+ *****************************************************************************/
+
+/*
+ *	Wait til post office is no longer busy 
+ */
+ 
+static int post_office_wait(struct zoran *zr)
+{
+	u32 por;
+	u32 ct=0;
+
+	while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
+		ct++;
+		if(ct>100000)
+		{
+			printk(KERN_ERR "%s: timeout on post office.\n", zr->name);
+			return -1;
+		}
+		/* wait for something to happen */
+	}
+	if ((por & ZR36057_POR_POPen) != 0) {
+		printk(KERN_WARNING "%s: pop pending %08x\n", zr->name, por);
+		return -1;
+	}
+	if ((por & (ZR36057_POR_POTime | ZR36057_POR_POPen)) != 0) {
+		printk(KERN_WARNING "%s: pop timeout %08x\n", zr->name, por);
+		return -1;
+	}
+	return 0;
+}
+
+static int post_office_write(struct zoran *zr, unsigned guest, unsigned reg, unsigned value)
+{
+	u32 por;
+
+	post_office_wait(zr);
+	por = ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16) | (value & 0xFF);
+	btwrite(por, ZR36057_POR);
+	return post_office_wait(zr);
+}
+
+static int post_office_read(struct zoran *zr, unsigned guest, unsigned reg)
+{
+	u32 por;
+
+	post_office_wait(zr);
+	por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
+	btwrite(por, ZR36057_POR);
+	if (post_office_wait(zr) < 0) {
+		return -1;
+	}
+	return btread(ZR36057_POR) & 0xFF;
+}
+
+static int zr36060_write_8(struct zoran *zr, unsigned reg, unsigned val)
+{
+	if (post_office_wait(zr)
+	    || post_office_write(zr, 0, 1, reg >> 8)
+	    || post_office_write(zr, 0, 2, reg)) {
+		return -1;
+	}
+	return post_office_write(zr, 0, 3, val);
+}
+
+static int zr36060_write_16(struct zoran *zr, unsigned reg, unsigned val)
+{
+	if (zr36060_write_8(zr, reg + 0, val >> 8)) {
+		return -1;
+	}
+	return zr36060_write_8(zr, reg + 1, val >> 0);
+}
+
+static int zr36060_write_24(struct zoran *zr, unsigned reg, unsigned val)
+{
+	if (zr36060_write_8(zr, reg + 0, val >> 16)) {
+		return -1;
+	}
+	return zr36060_write_16(zr, reg + 1, val >> 0);
+}
+
+static int zr36060_write_32(struct zoran *zr, unsigned reg, unsigned val)
+{
+	if (zr36060_write_16(zr, reg + 0, val >> 16)) {
+		return -1;
+	}
+	return zr36060_write_16(zr, reg + 2, val >> 0);
+}
+
+static u32 zr36060_read_8(struct zoran *zr, unsigned reg)
+{
+	if (post_office_wait(zr)
+	    || post_office_write(zr, 0, 1, reg >> 8)
+	    || post_office_write(zr, 0, 2, reg)) {
+		return -1;
+	}
+	return post_office_read(zr, 0, 3) & 0xFF;
+}
+
+static int zr36060_reset(struct zoran *zr)
+{
+	return post_office_write(zr, 3, 0, 0);
+}
+
+static void zr36060_sleep(struct zoran *zr, int sleep)
+{
+	GPIO(zr, 1, !sleep);
+}
+
+
+static void zr36060_set_jpg(struct zoran *zr, enum zoran_codec_mode mode)
+{
+	struct tvnorm *tvn;
+	u32 reg;
+	int size;
+
+	reg = (1 << 0)		/* CodeMstr */
+	    |(0 << 2)		/* CFIS=0 */
+	    |(0 << 6)		/* Endian=0 */
+	    |(0 << 7);		/* Code16=0 */
+	zr36060_write_8(zr, 0x002, reg);
+
+	switch (mode) {
+
+	case BUZ_MODE_MOTION_DECOMPRESS:
+	case BUZ_MODE_STILL_DECOMPRESS:
+		reg = 0x00;	/* Codec mode = decompression */
+		break;
+
+	case BUZ_MODE_MOTION_COMPRESS:
+	case BUZ_MODE_STILL_COMPRESS:
+	default:
+		reg = 0xa4;	/* Codec mode = compression with variable scale factor */
+		break;
+
+	}
+	zr36060_write_8(zr, 0x003, reg);
+
+	reg = 0x00;		/* reserved, mbz */
+	zr36060_write_8(zr, 0x004, reg);
+
+	reg = 0xff;		/* 510 bits/block */
+	zr36060_write_8(zr, 0x005, reg);
+
+	/* JPEG markers */
+	reg = (zr->params.jpeg_markers) & 0x38;	/* DRI, DQT, DHT */
+	if (zr->params.COM_len)
+		reg |= JPEG_MARKER_COM;
+	if (zr->params.APP_len)
+		reg |= JPEG_MARKER_APP;
+	zr36060_write_8(zr, 0x006, reg);
+
+	reg = (0 << 3)		/* DATERR=0 */
+	    |(0 << 2)		/* END=0 */
+	    |(0 << 1)		/* EOI=0 */
+	    |(0 << 0);		/* EOAV=0 */
+	zr36060_write_8(zr, 0x007, reg);
+
+	/* code volume */
+
+	/* Target field size in pixels: */
+	tvn = &tvnorms[zr->params.norm];
+	size = (tvn->Ha / 2) * (tvn->Wa) / (zr->params.HorDcm) / (zr->params.VerDcm);
+
+	/* Target compressed field size in bits: */
+	size = size * 16;	/* uncompressed size in bits */
+	size = size * zr->params.quality / 400;	/* quality = 100 is a compression ratio 1:4 */
+
+	/* Lower limit (arbitrary, 1 KB) */
+	if (size < 8192)
+		size = 8192;
+
+	/* Upper limit: 7/8 of the code buffers */
+	if (size * zr->params.field_per_buff > zr->jpg_bufsize * 7)
+		size = zr->jpg_bufsize * 7 / zr->params.field_per_buff;
+
+	reg = size;
+	zr36060_write_32(zr, 0x009, reg);
+
+	/* how do we set initial SF as a function of quality parameter? */
+	reg = 0x0100;		/* SF=1.0 */
+	zr36060_write_16(zr, 0x011, reg);
+
+	reg = 0x00ffffff;	/* AF=max */
+	zr36060_write_24(zr, 0x013, reg);
+
+	reg = 0x0000;		/* test */
+	zr36060_write_16(zr, 0x024, reg);
+}
+
+static void zr36060_set_video(struct zoran *zr, enum zoran_codec_mode mode)
+{
+	struct tvnorm *tvn;
+	u32 reg;
+
+	reg = (0 << 7)		/* Video8=0 */
+	    |(0 << 6)		/* Range=0 */
+	    |(0 << 3)		/* FlDet=0 */
+	    |(1 << 2)		/* FlVedge=1 */
+	    |(0 << 1)		/* FlExt=0 */
+	    |(0 << 0);		/* SyncMstr=0 */
+
+	/* According to ZR36067 documentation, FlDet should correspond
+	   to the odd_even flag of the ZR36067 */
+	if (zr->params.odd_even)
+		reg |= (1 << 3);
+
+	if (mode != BUZ_MODE_STILL_DECOMPRESS) {
+		/* limit pixels to range 16..235 as per CCIR-601 */
+		reg |= (1 << 6);	/* Range=1 */
+	}
+	zr36060_write_8(zr, 0x030, reg);
+
+	reg = (0 << 7)		/* VCLKPol=0 */
+	    |(0 << 6)		/* PValPol=0 */
+	    |(1 << 5)		/* PoePol=1 */
+	    |(0 << 4)		/* SImgPol=0 */
+	    |(0 << 3)		/* BLPol=0 */
+	    |(0 << 2)		/* FlPol=0 */
+	    |(0 << 1)		/* HSPol=0, sync on falling edge */
+	    |(1 << 0);		/* VSPol=1 */
+	zr36060_write_8(zr, 0x031, reg);
+
+	switch (zr->params.HorDcm) {
+	default:
+	case 1:
+		reg = (0 << 0);
+		break;		/* HScale = 0 */
+
+	case 2:
+		reg = (1 << 0);
+		break;		/* HScale = 1 */
+
+	case 4:
+		reg = (2 << 0);
+		break;		/* HScale = 2 */
+	}
+	if (zr->params.VerDcm == 2)
+		reg |= (1 << 2);
+	zr36060_write_8(zr, 0x032, reg);
+
+	reg = 0x80;		/* BackY */
+	zr36060_write_8(zr, 0x033, reg);
+
+	reg = 0xe0;		/* BackU */
+	zr36060_write_8(zr, 0x034, reg);
+
+	reg = 0xe0;		/* BackV */
+	zr36060_write_8(zr, 0x035, reg);
+
+	/* sync generator */
+
+	tvn = &tvnorms[zr->params.norm];
+
+	reg = tvn->Ht - 1;	/* Vtotal */
+	zr36060_write_16(zr, 0x036, reg);
+
+	reg = tvn->Wt - 1;	/* Htotal */
+	zr36060_write_16(zr, 0x038, reg);
+
+	reg = 6 - 1;		/* VsyncSize */
+	zr36060_write_8(zr, 0x03a, reg);
+
+	reg = 100 - 1;		/* HsyncSize */
+	zr36060_write_8(zr, 0x03b, reg);
+
+	reg = tvn->VStart - 1;	/* BVstart */
+	zr36060_write_8(zr, 0x03c, reg);
+
+	reg += tvn->Ha / 2;	/* BVend */
+	zr36060_write_16(zr, 0x03e, reg);
+
+	reg = tvn->HStart - 1;	/* BHstart */
+	zr36060_write_8(zr, 0x03d, reg);
+
+	reg += tvn->Wa;		/* BHend */
+	zr36060_write_16(zr, 0x040, reg);
+
+	/* active area */
+	reg = zr->params.img_y + tvn->VStart;	/* Vstart */
+	zr36060_write_16(zr, 0x042, reg);
+
+	reg += zr->params.img_height;	/* Vend */
+	zr36060_write_16(zr, 0x044, reg);
+
+	reg = zr->params.img_x + tvn->HStart;	/* Hstart */
+	zr36060_write_16(zr, 0x046, reg);
+
+	reg += zr->params.img_width;	/* Hend */
+	zr36060_write_16(zr, 0x048, reg);
+
+	/* subimage area */
+	reg = zr->params.img_y + tvn->VStart;	/* SVstart */
+	zr36060_write_16(zr, 0x04a, reg);
+
+	reg += zr->params.img_height;	/* SVend */
+	zr36060_write_16(zr, 0x04c, reg);
+
+	reg = zr->params.img_x + tvn->HStart;	/* SHstart */
+	zr36060_write_16(zr, 0x04e, reg);
+
+	reg += zr->params.img_width;	/* SHend */
+	zr36060_write_16(zr, 0x050, reg);
+}
+
+static void zr36060_set_jpg_SOF(struct zoran *zr)
+{
+	u32 reg;
+
+
+	reg = 0xffc0;		/* SOF marker */
+	zr36060_write_16(zr, 0x060, reg);
+
+	reg = 17;		/* SOF length */
+	zr36060_write_16(zr, 0x062, reg);
+
+	reg = 8;		/* precision 8 bits */
+	zr36060_write_8(zr, 0x064, reg);
+
+	reg = zr->params.img_height / zr->params.VerDcm;	/* image height */
+	zr36060_write_16(zr, 0x065, reg);
+
+	reg = zr->params.img_width / zr->params.HorDcm;	/* image width */
+	zr36060_write_16(zr, 0x067, reg);
+
+	reg = 3;		/* 3 color components */
+	zr36060_write_8(zr, 0x069, reg);
+
+	reg = 0x002100;		/* Y component */
+	zr36060_write_24(zr, 0x06a, reg);
+
+	reg = 0x011101;		/* U component */
+	zr36060_write_24(zr, 0x06d, reg);
+
+	reg = 0x021101;		/* V component */
+	zr36060_write_24(zr, 0x070, reg);
+}
+
+static void zr36060_set_jpg_SOS(struct zoran *zr)
+{
+	u32 reg;
+
+
+	reg = 0xffda;		/* SOS marker */
+	zr36060_write_16(zr, 0x07a, reg);
+
+	reg = 12;		/* SOS length */
+	zr36060_write_16(zr, 0x07c, reg);
+
+	reg = 3;		/* 3 color components */
+	zr36060_write_8(zr, 0x07e, reg);
+
+	reg = 0x0000;		/* Y component */
+	zr36060_write_16(zr, 0x07f, reg);
+
+	reg = 0x0111;		/* U component */
+	zr36060_write_16(zr, 0x081, reg);
+
+	reg = 0x0211;		/* V component */
+	zr36060_write_16(zr, 0x083, reg);
+
+	reg = 0x003f00;		/* Start, end spectral scans */
+	zr36060_write_24(zr, 0x085, reg);
+}
+
+static void zr36060_set_jpg_DRI(struct zoran *zr)
+{
+	u32 reg;
+
+
+	reg = 0xffdd;		/* DRI marker */
+	zr36060_write_16(zr, 0x0c0, reg);
+
+	reg = 4;		/* DRI length */
+	zr36060_write_16(zr, 0x0c2, reg);
+
+	reg = 8;		/* length in MCUs */
+	zr36060_write_16(zr, 0x0c4, reg);
+}
+
+static void zr36060_set_jpg_DQT(struct zoran *zr)
+{
+	unsigned i;
+	unsigned adr;
+	static const u8 dqt[] =
+	{
+		0xff, 0xdb,	/* DHT marker */
+		0x00, 0x84,	/* DHT length */
+		0x00,		/* table ID 0 */
+		0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e,
+		0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28,
+		0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25,
+		0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33,
+		0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44,
+		0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57,
+		0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71,
+		0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63,
+		0x01,		/* table ID 1 */
+		0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a,
+		0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
+		0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+		0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+		0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+		0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+		0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+		0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
+	};
+
+	/* write fixed quantitization tables */
+	adr = 0x0cc;
+	for (i = 0; i < sizeof(dqt); ++i) {
+		zr36060_write_8(zr, adr++, dqt[i]);
+	}
+}
+
+static void zr36060_set_jpg_DHT(struct zoran *zr)
+{
+	unsigned i;
+	unsigned adr;
+	static const u8 dht[] =
+	{
+		0xff, 0xc4,	/* DHT marker */
+		0x01, 0xa2,	/* DHT length */
+		0x00,		/* table class 0, ID 0 */
+		0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01,		/* # codes of length 1..8 */
+		0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,		/* # codes of length 8..16 */
+		0x00,		/* values for codes of length 2 */
+		0x01, 0x02, 0x03, 0x04, 0x05,	/* values for codes of length 3 */
+		0x06,		/* values for codes of length 4 */
+		0x07,		/* values for codes of length 5 */
+		0x08,		/* values for codes of length 6 */
+		0x09,		/* values for codes of length 7 */
+		0x0a,		/* values for codes of length 8 */
+		0x0b,		/* values for codes of length 9 */
+		0x01,		/* table class 0, ID 1 */
+		0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,		/* # codes of length 1..8 */
+		0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,		/* # codes of length 9..16 */
+		0x00, 0x01, 0x02,	/* values for codes of length 2 */
+		0x03,		/* values for codes of length 3 */
+		0x04,		/* values for codes of length 4 */
+		0x05,		/* values for codes of length 5 */
+		0x06,		/* values for codes of length 6 */
+		0x07,		/* values for codes of length 7 */
+		0x08,		/* values for codes of length 8 */
+		0x09,		/* values for codes of length 9 */
+		0x0a,		/* values for codes of length 10 */
+		0x0b,		/* values for codes of length 11 */
+		0x10,
+		0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03,
+		0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
+		0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
+		0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
+		0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
+		0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
+		0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
+		0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
+		0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
+		0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
+		0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+		0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
+		0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
+		0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
+		0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
+		0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+		0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
+		0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
+		0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
+		0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
+		0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
+		0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
+		0xf9, 0xfa, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04,
+		0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04, 0x00,
+		0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11,
+		0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51,
+		0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08,
+		0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23,
+		0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, 0x0a,
+		0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18,
+		0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35,
+		0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45,
+		0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55,
+		0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65,
+		0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75,
+		0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84,
+		0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93,
+		0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2,
+		0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa,
+		0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9,
+		0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8,
+		0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
+		0xd8, 0xd9, 0xda, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6,
+		0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5,
+		0xf6, 0xf7, 0xf8, 0xf9, 0xfa
+	};
+
+	/* write fixed Huffman tables */
+	adr = 0x1d4;
+	for (i = 0; i < sizeof(dht); ++i) {
+		zr36060_write_8(zr, adr++, dht[i]);
+	}
+}
+
+static void zr36060_set_jpg_APP(struct zoran *zr)
+{
+	unsigned adr;
+	int len, i;
+	u32 reg;
+
+
+	len = zr->params.APP_len;
+	if (len < 0)
+		len = 0;
+	if (len > 60)
+		len = 60;
+
+	i = zr->params.APPn;
+	if (i < 0)
+		i = 0;
+	if (i > 15)
+		i = 15;
+
+	reg = 0xffe0 + i;	/* APPn marker */
+	zr36060_write_16(zr, 0x380, reg);
+
+	reg = len + 2;		/* APPn len */
+	zr36060_write_16(zr, 0x382, reg);
+
+	/* write APPn data */
+	adr = 0x384;
+	for (i = 0; i < 60; i++) {
+		zr36060_write_8(zr, adr++, (i < len ? zr->params.APP_data[i] : 0));
+	}
+}
+
+static void zr36060_set_jpg_COM(struct zoran *zr)
+{
+	unsigned adr;
+	int len, i;
+	u32 reg;
+
+
+	len = zr->params.COM_len;
+	if (len < 0)
+		len = 0;
+	if (len > 60)
+		len = 60;
+
+	reg = 0xfffe;		/* COM marker */
+	zr36060_write_16(zr, 0x3c0, reg);
+
+	reg = len + 2;		/* COM len */
+	zr36060_write_16(zr, 0x3c2, reg);
+
+	/* write COM data */
+	adr = 0x3c4;
+	for (i = 0; i < 60; i++) {
+		zr36060_write_8(zr, adr++, (i < len ? zr->params.COM_data[i] : 0));
+	}
+}
+
+static void zr36060_set_cap(struct zoran *zr, enum zoran_codec_mode mode)
+{
+	unsigned i;
+	u32 reg;
+
+	zr36060_reset(zr);
+	mdelay(10);
+
+	reg = (0 << 7)		/* Load=0 */
+	    |(1 << 0);		/* SynRst=1 */
+	zr36060_write_8(zr, 0x000, reg);
+
+	zr36060_set_jpg(zr, mode);
+	zr36060_set_video(zr, mode);
+	zr36060_set_jpg_SOF(zr);
+	zr36060_set_jpg_SOS(zr);
+	zr36060_set_jpg_DRI(zr);
+	zr36060_set_jpg_DQT(zr);
+	zr36060_set_jpg_DHT(zr);
+	zr36060_set_jpg_APP(zr);
+	zr36060_set_jpg_COM(zr);
+
+	reg = (1 << 7)		/* Load=1 */
+	    |(0 << 0);		/* SynRst=0 */
+	zr36060_write_8(zr, 0x000, reg);
+
+	/* wait for codec to unbusy */
+	for (i = 0; i < 1000; ++i) {
+		reg = zr36060_read_8(zr, 0x001);
+		if ((reg & (1 << 7)) == 0) {
+			DEBUG(printk(KERN_DEBUG "060: loaded, loops=%u\n", i));
+			return;
+		}
+		udelay(1000);
+	}
+	printk(KERN_INFO "060: stuck busy, statux=%02x\n", reg);
+}
+
+static void zr36057_set_jpg(struct zoran *zr, enum zoran_codec_mode mode)
+{
+	struct tvnorm *tvn;
+	u32 reg;
+	int i;
+
+	tvn = &tvnorms[zr->params.norm];
+
+	/* assert P_Reset */
+	btwrite(0, ZR36057_JPC);
+
+	/* re-initialize DMA ring stuff */
+	zr->jpg_que_head = 0;
+	zr->jpg_dma_head = 0;
+	zr->jpg_dma_tail = 0;
+	zr->jpg_que_tail = 0;
+	zr->jpg_seq_num = 0;
+	for (i = 0; i < BUZ_NUM_STAT_COM; ++i) {
+		zr->stat_com[i] = 1;	/* mark as unavailable to zr36057 */
+	}
+	for (i = 0; i < zr->jpg_nbufs; i++) {
+		zr->jpg_gbuf[i].state = BUZ_STATE_USER;	/* nothing going on */
+	}
+
+	/* MJPEG compression mode */
+	switch (mode) {
+
+	case BUZ_MODE_MOTION_COMPRESS:
+	default:
+		reg = ZR36057_JMC_MJPGCmpMode;
+		break;
+
+	case BUZ_MODE_MOTION_DECOMPRESS:
+		reg = ZR36057_JMC_MJPGExpMode;
+		reg |= ZR36057_JMC_SyncMstr;
+		/* RJ: The following is experimental - improves the output to screen */
+		if (zr->params.VFIFO_FB)
+			reg |= ZR36057_JMC_VFIFO_FB;
+		break;
+
+	case BUZ_MODE_STILL_COMPRESS:
+		reg = ZR36057_JMC_JPGCmpMode;
+		break;
+
+	case BUZ_MODE_STILL_DECOMPRESS:
+		reg = ZR36057_JMC_JPGExpMode;
+		break;
+
+	}
+	reg |= ZR36057_JMC_JPG;
+	if (zr->params.field_per_buff == 1)
+		reg |= ZR36057_JMC_Fld_per_buff;
+	btwrite(reg, ZR36057_JMC);
+
+	/* vertical */
+	btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
+	reg = (6 << ZR36057_VSP_VsyncSize) | (tvn->Ht << ZR36057_VSP_FrmTot);
+	btwrite(reg, ZR36057_VSP);
+	reg = ((zr->params.img_y + tvn->VStart) << ZR36057_FVAP_NAY)
+	    | (zr->params.img_height << ZR36057_FVAP_PAY);
+	btwrite(reg, ZR36057_FVAP);
+
+	/* horizontal */
+	btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
+	reg = ((tvn->Wt - 100) << ZR36057_HSP_HsyncStart) | (tvn->Wt << ZR36057_HSP_LineTot);
+	btwrite(reg, ZR36057_HSP);
+	reg = ((zr->params.img_x + tvn->HStart) << ZR36057_FHAP_NAX)
+	    | (zr->params.img_width << ZR36057_FHAP_PAX);
+	btwrite(reg, ZR36057_FHAP);
+
+	/* field process parameters */
+	if (zr->params.odd_even)
+		reg = ZR36057_FPP_Odd_Even;
+	else
+		reg = 0;
+	btwrite(reg, ZR36057_FPP);
+
+	/* Set proper VCLK Polarity, else colors will be wrong during playback */
+	btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
+
+	/* code base address and FIFO threshold */
+	reg = virt_to_bus(zr->stat_com);
+	btwrite(reg, ZR36057_JCBA);
+	reg = 0x50;
+	btwrite(reg, ZR36057_JCFT);
+
+	/* JPEG codec guest ID */
+	reg = (1 << ZR36057_JCGI_JPEGuestID) | (0 << ZR36057_JCGI_JPEGuestReg);
+	btwrite(reg, ZR36057_JCGI);
+
+	/* Code transfer guest ID */
+	reg = (0 << ZR36057_MCTCR_CodGuestID) | (3 << ZR36057_MCTCR_CodGuestReg);
+	reg |= ZR36057_MCTCR_CFlush;
+	btwrite(reg, ZR36057_MCTCR);
+
+	/* deassert P_Reset */
+	btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
+}
+
+static void zr36057_enable_jpg(struct zoran *zr, enum zoran_codec_mode mode)
+{
+	static int zero = 0;
+	static int one = 1;
+
+	switch (mode) {
+
+	case BUZ_MODE_MOTION_COMPRESS:
+		zr36060_set_cap(zr, mode);
+		zr36057_set_jpg(zr, mode);
+		i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_ENABLE_OUTPUT, &one);
+		i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_INPUT, &zero);
+
+		/* deassert P_Reset, assert Code transfer enable */
+		btwrite(IRQ_MASK, ZR36057_ISR);
+		btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
+		break;
+
+	case BUZ_MODE_MOTION_DECOMPRESS:
+		i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_ENABLE_OUTPUT, &zero);
+		i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_INPUT, &one);
+		zr36060_set_cap(zr, mode);
+		zr36057_set_jpg(zr, mode);
+
+		/* deassert P_Reset, assert Code transfer enable */
+		btwrite(IRQ_MASK, ZR36057_ISR);
+		btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
+		break;
+
+	case BUZ_MODE_IDLE:
+	default:
+		/* shut down processing */
+		btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
+		btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
+		btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
+		btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
+		btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
+		btwrite(0, ZR36057_ISR);
+		zr36060_reset(zr);
+		i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_ENABLE_OUTPUT, &one);
+		i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_INPUT, &zero);
+		break;
+
+	}
+	zr->codec_mode = mode;
+}
+
+/*
+ *   Queue a MJPEG buffer for capture/playback
+ */
+
+static int jpg_qbuf(struct zoran *zr, int frame, enum zoran_codec_mode mode)
+{
+	unsigned long flags;
+	int res;
+
+	/* Check if buffers are allocated */
+
+	if (!zr->jpg_buffers_allocated) {
+		printk(KERN_ERR "%s: jpg_qbuf: buffers not yet allocated\n", zr->name);
+		return -ENOMEM;
+	}
+	/* Does the user want to stop streaming? */
+
+	if (frame < 0) {
+		if (zr->codec_mode == mode) {
+			zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
+			return 0;
+		} else {
+			printk(KERN_ERR "%s: jpg_qbuf - stop streaming but not in streaming mode\n", zr->name);
+			return -EINVAL;
+		}
+	}
+	/* No grabbing outside the buffer range! */
+
+	if (frame >= zr->jpg_nbufs) {
+		printk(KERN_ERR "%s: jpg_qbuf: buffer %d out of range\n", zr->name, frame);
+		return -EINVAL;
+	}
+	/* what is the codec mode right now? */
+
+	if (zr->codec_mode == BUZ_MODE_IDLE) {
+		/* Ok load up the zr36060 and go */
+		zr36057_enable_jpg(zr, mode);
+	} else if (zr->codec_mode != mode) {
+		/* wrong codec mode active - invalid */
+		printk(KERN_ERR "%s: jpg_qbuf - codec in wrong mode\n", zr->name);
+		return -EINVAL;
+	}
+	spin_lock_irqsave(&zr->lock, flags);
+
+	/* make sure a grab isn't going on currently with this buffer */
+
+	switch (zr->jpg_gbuf[frame].state) {
+
+	default:
+	case BUZ_STATE_DMA:
+	case BUZ_STATE_PEND:
+	case BUZ_STATE_DONE:
+		res = -EBUSY;	/* what are you doing? */
+		break;
+
+	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] = frame;
+		zr->jpg_gbuf[frame].state = BUZ_STATE_PEND;
+		zoran_feed_stat_com(zr);
+		res = 0;
+		break;
+
+	}
+
+	spin_unlock_irqrestore(&zr->lock, flags);
+
+	/* Start the zr36060 when the first frame is queued  */
+	if (zr->jpg_que_head == 1) {
+		btor(ZR36057_JMC_Go_en, ZR36057_JMC);
+		btwrite(ZR36057_JPC_P_Reset | ZR36057_JPC_CodTrnsEn | ZR36057_JPC_Active, ZR36057_JPC);
+	}
+	return res;
+}
+
+/*
+ *   Sync on a MJPEG buffer
+ */
+
+static int jpg_sync(struct zoran *zr, struct zoran_sync *bs)
+{
+	unsigned long flags;
+	int frame;
+
+	if (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS &&
+	    zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) {
+		return -EINVAL;
+	}
+	while (zr->jpg_que_tail == zr->jpg_dma_tail) {
+		interruptible_sleep_on(&zr->jpg_capq);
+		if (signal_pending(current))
+			return -ERESTARTSYS;
+	}
+
+	spin_lock_irqsave(&zr->lock, flags);
+
+	frame = zr->jpg_pend[zr->jpg_que_tail++ & BUZ_MASK_FRAME];
+
+	/* buffer should now be in BUZ_STATE_DONE */
+
+	if (zr->jpg_gbuf[frame].state != BUZ_STATE_DONE)
+		printk(KERN_ERR "%s: jpg_sync - internal error\n", zr->name);
+
+	*bs = zr->jpg_gbuf[frame].bs;
+	zr->jpg_gbuf[frame].state = BUZ_STATE_USER;
+
+	spin_unlock_irqrestore(&zr->lock, flags);
+
+	return 0;
+}
+
+/* when this is called the spinlock must be held */
+static void zoran_feed_stat_com(struct zoran *zr)
+{
+	/* move frames from pending queue to DMA */
+
+	int frame, i, max_stat_com;
+
+	max_stat_com = (zr->params.TmpDcm == 1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
+
+	while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com
+	       && zr->jpg_dma_head != zr->jpg_que_head) {
+
+		frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
+		if (zr->params.TmpDcm == 1) {
+			/* fill 1 stat_com entry */
+			i = zr->jpg_dma_head & BUZ_MASK_STAT_COM;
+			zr->stat_com[i] = zr->jpg_gbuf[frame].frag_tab_bus;
+		} else {
+			/* fill 2 stat_com entries */
+			i = (zr->jpg_dma_head & 1) * 2;
+			zr->stat_com[i] = zr->jpg_gbuf[frame].frag_tab_bus;
+			zr->stat_com[i + 1] = zr->jpg_gbuf[frame].frag_tab_bus;
+		}
+		zr->jpg_gbuf[frame].state = BUZ_STATE_DMA;
+		zr->jpg_dma_head++;
+
+	}
+}
+
+/* when this is called the spinlock must be held */
+static void zoran_reap_stat_com(struct zoran *zr)
+{
+	/* move frames from DMA queue to done queue */
+
+	int i;
+	u32 stat_com;
+	unsigned int seq;
+	unsigned int dif;
+	int frame;
+	struct zoran_gbuffer *gbuf;
+
+	/* In motion decompress we don't have a hardware frame counter,
+	   we just count the interrupts here */
+
+	if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
+		zr->jpg_seq_num++;
+
+	while (zr->jpg_dma_tail != zr->jpg_dma_head) {
+		if (zr->params.TmpDcm == 1)
+			i = zr->jpg_dma_tail & BUZ_MASK_STAT_COM;
+		else
+			i = (zr->jpg_dma_tail & 1) * 2 + 1;
+
+		stat_com = zr->stat_com[i];
+
+		if ((stat_com & 1) == 0) {
+			return;
+		}
+		frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
+		gbuf = &zr->jpg_gbuf[frame];
+		get_fast_time(&gbuf->bs.timestamp);
+
+		if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
+			gbuf->bs.length = (stat_com & 0x7fffff) >> 1;
+
+			/* update sequence number with the help of the counter in stat_com */
+
+			seq = stat_com >> 24;
+			dif = (seq - zr->jpg_seq_num) & 0xff;
+			zr->jpg_seq_num += dif;
+		} else {
+			gbuf->bs.length = 0;
+		}
+		gbuf->bs.seq = zr->params.TmpDcm == 2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
+		gbuf->state = BUZ_STATE_DONE;
+
+		zr->jpg_dma_tail++;
+	}
+}
+
+static void zoran_irq(int irq, void *dev_id, struct pt_regs *regs)
+{
+	u32 stat, astat;
+	int count;
+	struct zoran *zr;
+	unsigned long flags;
+
+	zr = (struct zoran *) dev_id;
+	count = 0;
+
+	spin_lock_irqsave(&zr->lock, flags);
+	while (1) {
+		/* get/clear interrupt status bits */
+		stat = btread(ZR36057_ISR);
+		astat = stat & IRQ_MASK;
+		if (!astat) {
+			break;
+		}
+		btwrite(astat, ZR36057_ISR);
+		IDEBUG(printk(BUZ_DEBUG "-%u: astat %08x stat %08x\n", zr->id, astat, stat));
+
+#if (IRQ_MASK & ZR36057_ISR_GIRQ0)
+		if (astat & ZR36057_ISR_GIRQ0) {
+
+			/* Interrupts may still happen when zr->v4l_memgrab_active is switched off.
+			   We simply ignore them */
+
+			if (zr->v4l_memgrab_active) {
+
+/* A lot more checks should be here ... */
+				if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot) == 0)
+					printk(KERN_WARNING "%s: BuzIRQ with SnapShot off ???\n", zr->name);
+
+				if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
+					/* There is a grab on a frame going on, check if it has finished */
+
+					if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FrameGrab) == 0) {
+						/* it is finished, notify the user */
+
+						zr->v4l_gbuf[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
+						zr->v4l_grab_frame = NO_GRAB_ACTIVE;
+						zr->v4l_grab_seq++;
+						zr->v4l_pend_tail++;
+					}
+				}
+				if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
+					wake_up_interruptible(&zr->v4l_capq);
+
+				/* Check if there is another grab queued */
+
+				if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
+				    zr->v4l_pend_tail != zr->v4l_pend_head) {
+
+					int frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
+					u32 reg;
+
+					zr->v4l_grab_frame = frame;
+
+					/* Set zr36057 video front end and enable video */
+
+					/* Buffer address */
+
+					reg = zr->v4l_gbuf[frame].fbuffer_bus;
+					btwrite(reg, ZR36057_VDTR);
+					if (zr->video_interlace)
+						reg += zr->gbpl;
+					btwrite(reg, ZR36057_VDBR);
+
+					/* video stride, status, and frame grab register */
+
+#ifdef XAWTV_HACK
+					reg = (zr->gwidth > 720) ? ((zr->gwidth & ~3) - 720) * zr->gbpl / zr->gwidth : 0;
+#else
+					reg = 0;
+#endif
+					if (zr->video_interlace)
+						reg += zr->gbpl;
+					reg = (reg << ZR36057_VSSFGR_DispStride);
+					reg |= ZR36057_VSSFGR_VidOvf;
+					reg |= ZR36057_VSSFGR_SnapShot;
+					reg |= ZR36057_VSSFGR_FrameGrab;
+					btwrite(reg, ZR36057_VSSFGR);
+
+					btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
+				}
+			}
+		}
+#endif				/* (IRQ_MASK & ZR36057_ISR_GIRQ0) */
+
+#if (IRQ_MASK & ZR36057_ISR_GIRQ1)
+		if (astat & ZR36057_ISR_GIRQ1) {
+			unsigned csr = zr36060_read_8(zr, 0x001);
+			unsigned isr = zr36060_read_8(zr, 0x008);
+
+			IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_GIRQ1 60_code=%02x 60_intr=%02x\n",
+				      zr->name, csr, isr));
+
+			btand(~ZR36057_ICR_GIRQ1, ZR36057_ICR);
+			zoran_reap_stat_com(zr);
+			zoran_feed_stat_com(zr);
+		}
+#endif				/* (IRQ_MASK & ZR36057_ISR_GIRQ1) */
+
+#if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
+		if (astat & ZR36057_ISR_CodRepIRQ) {
+			IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n", zr->name));
+			btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
+		}
+#endif				/* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
+
+#if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
+		if ((astat & ZR36057_ISR_JPEGRepIRQ) &&
+		    (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
+		     zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)) {
+			zoran_reap_stat_com(zr);
+			zoran_feed_stat_com(zr);
+			wake_up_interruptible(&zr->jpg_capq);
+		}
+#endif				/* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
+
+		count++;
+		if (count > 10) {
+			printk(KERN_WARNING "%s: irq loop %d\n", zr->name, count);
+			if (count > 20) {
+				btwrite(0, ZR36057_ICR);
+				printk(KERN_ERR  "%s: IRQ lockup, cleared int mask\n", zr->name);
+				break;
+			}
+		}
+	}
+	spin_unlock_irqrestore(&zr->lock, flags);
+}
+
+/* Check a zoran_params struct for correctness, insert default params */
+
+static int zoran_check_params(struct zoran *zr, struct zoran_params *params)
+{
+	int err = 0, err0 = 0;
+
+	/* insert constant params */
+
+	params->major_version = MAJOR_VERSION;
+	params->minor_version = MINOR_VERSION;
+
+	/* Check input and norm */
+
+	if (params->input != 0 && params->input != 1) {
+		err++;
+	}
+	if (params->norm != VIDEO_MODE_PAL && params->norm != VIDEO_MODE_NTSC) {
+		err++;
+	}
+	/* Check decimation, set default values for decimation = 1, 2, 4 */
+
+	switch (params->decimation) {
+	case 1:
+
+		params->HorDcm = 1;
+		params->VerDcm = 1;
+		params->TmpDcm = 1;
+		params->field_per_buff = 2;
+
+		params->img_x = 0;
+		params->img_y = 0;
+		params->img_width = 720;
+		params->img_height = tvnorms[params->norm].Ha / 2;
+		break;
+
+	case 2:
+
+		params->HorDcm = 2;
+		params->VerDcm = 1;
+		params->TmpDcm = 2;
+		params->field_per_buff = 1;
+
+		params->img_x = 8;
+		params->img_y = 0;
+		params->img_width = 704;
+		params->img_height = tvnorms[params->norm].Ha / 2;
+		break;
+
+	case 4:
+
+		params->HorDcm = 4;
+		params->VerDcm = 2;
+		params->TmpDcm = 2;
+		params->field_per_buff = 1;
+
+		params->img_x = 8;
+		params->img_y = 0;
+		params->img_width = 704;
+		params->img_height = tvnorms[params->norm].Ha / 2;
+		break;
+
+	case 0:
+
+		/* We have to check the data the user has set */
+
+		if (params->HorDcm != 1 && params->HorDcm != 2 && params->HorDcm != 4)
+			err0++;
+		if (params->VerDcm != 1 && params->VerDcm != 2)
+			err0++;
+		if (params->TmpDcm != 1 && params->TmpDcm != 2)
+			err0++;
+		if (params->field_per_buff != 1 && params->field_per_buff != 2)
+			err0++;
+
+		if (params->img_x < 0)
+			err0++;
+		if (params->img_y < 0)
+			err0++;
+		if (params->img_width < 0)
+			err0++;
+		if (params->img_height < 0)
+			err0++;
+		if (params->img_x + params->img_width > 720)
+			err0++;
+		if (params->img_y + params->img_height > tvnorms[params->norm].Ha / 2)
+			err0++;
+		if (params->img_width % (16 * params->HorDcm) != 0)
+			err0++;
+		if (params->img_height % (8 * params->VerDcm) != 0)
+			err0++;
+
+		if (err0) {
+			err++;
+		}
+		break;
+
+	default:
+		err++;
+		break;
+	}
+
+	if (params->quality > 100)
+		params->quality = 100;
+	if (params->quality < 5)
+		params->quality = 5;
+
+	if (params->APPn < 0)
+		params->APPn = 0;
+	if (params->APPn > 15)
+		params->APPn = 15;
+	if (params->APP_len < 0)
+		params->APP_len = 0;
+	if (params->APP_len > 60)
+		params->APP_len = 60;
+	if (params->COM_len < 0)
+		params->COM_len = 0;
+	if (params->COM_len > 60)
+		params->COM_len = 60;
+
+	if (err)
+		return -EINVAL;
+
+	return 0;
+
+}
+static void zoran_open_init_params(struct zoran *zr)
+{
+	int i;
+
+	/* Per default, map the V4L Buffers */
+
+	zr->map_mjpeg_buffers = 0;
+
+	/* User must explicitly set a window */
+
+	zr->window_set = 0;
+
+	zr->window.x = 0;
+	zr->window.y = 0;
+	zr->window.width = 0;
+	zr->window.height = 0;
+	zr->window.chromakey = 0;
+	zr->window.flags = 0;
+	zr->window.clips = NULL;
+	zr->window.clipcount = 0;
+
+	zr->video_interlace = 0;
+
+	zr->v4l_memgrab_active = 0;
+	zr->v4l_overlay_active = 0;
+
+	zr->v4l_grab_frame = NO_GRAB_ACTIVE;
+	zr->v4l_grab_seq = 0;
+
+	zr->gwidth = 0;
+	zr->gheight = 0;
+	zr->gformat = 0;
+	zr->gbpl = 0;
+
+	/* DMA ring stuff for V4L */
+
+	zr->v4l_pend_tail = 0;
+	zr->v4l_pend_head = 0;
+	for (i = 0; i < v4l_nbufs; i++) {
+		zr->v4l_gbuf[i].state = BUZ_STATE_USER;	/* nothing going on */
+	}
+
+	/* Set necessary params and call zoran_check_params to set the defaults */
+
+	zr->params.decimation = 1;
+
+	zr->params.quality = 50;	/* default compression factor 8 */
+	zr->params.odd_even = 1;
+
+	zr->params.APPn = 0;
+	zr->params.APP_len = 0;	/* No APPn marker */
+	for (i = 0; i < 60; i++)
+		zr->params.APP_data[i] = 0;
+
+	zr->params.COM_len = 0;	/* No COM marker */
+	for (i = 0; i < 60; i++)
+		zr->params.COM_data[i] = 0;
+
+	zr->params.VFIFO_FB = 0;
+
+	memset(zr->params.reserved, 0, sizeof(zr->params.reserved));
+
+	zr->params.jpeg_markers = JPEG_MARKER_DHT | JPEG_MARKER_DQT;
+
+	i = zoran_check_params(zr, &zr->params);
+	if (i)
+		printk(KERN_ERR "%s: zoran_open_init_params internal error\n", zr->name);
+}
+
+/*
+ *   Open a buz card. Right now the flags stuff is just playing
+ */
+
+static int zoran_open(struct video_device *dev, int flags)
+{
+	struct zoran *zr = (struct zoran *) dev;
+
+	DEBUG(printk(KERN_INFO ": zoran_open\n"));
+
+	switch (flags) {
+
+	case 0:
+		if (zr->user)
+			return -EBUSY;
+		zr->user++;
+
+		if (v4l_fbuffer_alloc(zr) < 0) {
+			zr->user--;
+			return -ENOMEM;
+		}
+		/* default setup */
+
+		zoran_open_init_params(zr);
+
+		zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
+
+		btwrite(IRQ_MASK, ZR36057_ISR);		// Clears interrupts
+
+		btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
+
+		break;
+
+	default:
+		return -EBUSY;
+
+	}
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static void zoran_close(struct video_device *dev)
+{
+	struct zoran *zr = (struct zoran *) dev;
+
+	DEBUG(printk(KERN_INFO ": zoran_close\n"));
+	
+	/* disable interrupts */
+	btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
+
+	/* wake up sleeping beauties */
+	wake_up_interruptible(&zr->v4l_capq);
+	wake_up_interruptible(&zr->jpg_capq);
+
+	zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
+	zr36057_set_memgrab(zr, 0);
+	if (zr->v4l_overlay_active)
+		zr36057_overlay(zr, 0);
+
+	zr->user--;
+
+	v4l_fbuffer_free(zr);
+	jpg_fbuffer_free(zr);
+	zr->jpg_nbufs = 0;
+
+	MOD_DEC_USE_COUNT;
+	DEBUG(printk(KERN_INFO ": zoran_close done\n"));
+}
+
+
+static long zoran_read(struct video_device *dev, char *buf, unsigned long count, int nonblock)
+{
+	return -EINVAL;
+}
+
+static long zoran_write(struct video_device *dev, const char *buf, unsigned long count, int nonblock)
+{
+	return -EINVAL;
+}
+
+/*
+ *   ioctl routine
+ */
+
+
+static int zoran_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
+{
+	struct zoran *zr = (struct zoran *) dev;
+
+	switch (cmd) {
+
+	case VIDIOCGCAP:
+		{
+			struct video_capability b;
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCGCAP\n"));
+			strncpy(b.name, zr->video_dev.name, sizeof(b.name));
+			b.type = VID_TYPE_CAPTURE |
+			    VID_TYPE_OVERLAY |
+			    VID_TYPE_CLIPPING |
+			    VID_TYPE_FRAMERAM |
+			    VID_TYPE_SCALES;
+			/* theoretically we could also flag VID_TYPE_SUBCAPTURE
+			   but this is not even implemented in the BTTV driver */
+
+			b.channels = 2;		/* composite, svhs */
+			b.audios = 0;
+			b.maxwidth = BUZ_MAX_WIDTH;
+			b.maxheight = BUZ_MAX_HEIGHT;
+			b.minwidth = BUZ_MIN_WIDTH;
+			b.minheight = BUZ_MIN_HEIGHT;
+			if (copy_to_user(arg, &b, sizeof(b))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+	case VIDIOCGCHAN:
+		{
+			struct video_channel v;
+
+			if (copy_from_user(&v, arg, sizeof(v))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCGCHAN for channel %d\n", v.channel));
+			switch (v.channel) {
+			case 0:
+				strcpy(v.name, "Composite");
+				break;
+			case 1:
+				strcpy(v.name, "SVHS");
+				break;
+			default:
+				return -EINVAL;
+			}
+			v.tuners = 0;
+			v.flags = 0;
+			v.type = VIDEO_TYPE_CAMERA;
+			v.norm = zr->params.norm;
+			if (copy_to_user(arg, &v, sizeof(v))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+		/* 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 v;
+			int input;
+			int on, res;
+
+			if (copy_from_user(&v, arg, sizeof(v))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCSCHAN: channel=%d, norm=%d\n", v.channel, v.norm));
+			switch (v.channel) {
+			case 0:
+				input = 3;
+				break;
+			case 1:
+				input = 7;
+				break;
+			default:
+				return -EINVAL;
+			}
+
+			if (v.norm != VIDEO_MODE_PAL
+			    && v.norm != VIDEO_MODE_NTSC) {
+				return -EINVAL;
+			}
+			zr->params.norm = v.norm;
+			zr->params.input = v.channel;
+
+			/* We switch overlay off and on since a change in the norm
+			   needs different VFE settings */
+
+			on = zr->v4l_overlay_active && !zr->v4l_memgrab_active;
+			if (on)
+				zr36057_overlay(zr, 0);
+
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &input);
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &zr->params.norm);
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_NORM, &zr->params.norm);
+
+			if (on)
+				zr36057_overlay(zr, 1);
+
+			/* Make sure the changes come into effect */
+			res = wait_grab_pending(zr);
+			if (res)
+				return res;
+
+			return 0;
+		}
+
+	case VIDIOCGTUNER:
+	case VIDIOCSTUNER:
+			return -EINVAL;
+
+	case VIDIOCGPICT:
+		{
+			struct video_picture p = zr->picture;
+
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCGPICT\n"));
+			p.depth = zr->buffer.depth;
+			switch (zr->buffer.depth) {
+			case 15:
+				p.palette = VIDEO_PALETTE_RGB555;
+				break;
+
+			case 16:
+				p.palette = VIDEO_PALETTE_RGB565;
+				break;
+
+			case 24:
+				p.palette = VIDEO_PALETTE_RGB24;
+				break;
+
+			case 32:
+				p.palette = VIDEO_PALETTE_RGB32;
+				break;
+			}
+
+			if (copy_to_user(arg, &p, sizeof(p))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+	case VIDIOCSPICT:
+		{
+			struct video_picture p;
+
+			if (copy_from_user(&p, arg, sizeof(p))) {
+				return -EFAULT;
+			}
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_PICTURE, &p);
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCSPICT bri=%d hue=%d col=%d con=%d dep=%d pal=%d\n",
+					   p.brightness, p.hue, p.colour, p.contrast, p.depth, p.palette));
+			/* The depth and palette values have no meaning to us,
+			   should we return  -EINVAL if they don't fit ? */
+			zr->picture = p;
+			return 0;
+		}
+
+	case VIDIOCCAPTURE:
+		{
+			int v, res;
+
+			if (copy_from_user(&v, arg, sizeof(v))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCCAPTURE: %d\n", v));
+			/* If there is nothing to do, return immediatly */
+
+			if ((v && zr->v4l_overlay_active) || (!v && !zr->v4l_overlay_active))
+				return 0;
+
+			if (v == 0) {
+				zr->v4l_overlay_active = 0;
+				if (!zr->v4l_memgrab_active)
+					zr36057_overlay(zr, 0);
+				/* When a grab is running, the video simply won't be switched on any more */
+			} else {
+				if (!zr->buffer_set || !zr->window_set) {
+					return -EINVAL;
+				}
+				zr->v4l_overlay_active = 1;
+				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 */
+			res = wait_grab_pending(zr);
+			if (res)
+				return res;
+			return 0;
+		}
+
+	case VIDIOCGWIN:
+		{
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCGWIN\n"));
+			if (copy_to_user(arg, &zr->window, sizeof(zr->window))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+	case VIDIOCSWIN:
+		{
+			struct video_clip *vcp;
+			struct video_window vw;
+			int on, end, res;
+
+			if (copy_from_user(&vw, arg, sizeof(vw))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCSWIN: x=%d y=%d w=%d h=%d clipcount=%d\n", vw.x, vw.y, vw.width, vw.height, vw.clipcount));
+			if (!zr->buffer_set) {
+				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 = (vw.x + vw.width) & ~1;	/* round down */
+				vw.x = (vw.x + 1) & ~1;		/* round up */
+				vw.width = end - vw.x;
+			}
+			if (zr->buffer.depth == 24) {
+				end = (vw.x + vw.width) & ~3;	/* round down */
+				vw.x = (vw.x + 3) & ~3;		/* round up */
+				vw.width = end - vw.x;
+			}
+#if 0
+			// At least xawtv seems to care about the following - just leave it away
+			/*
+			 * Also corrected silently (as long as window fits at all):
+			 * video not fitting the screen
+			 */
+#if 0
+			if (vw.x < 0 || vw.y < 0 || vw.x + vw.width > zr->buffer.width ||
+			    vw.y + vw.height > zr->buffer.height) {
+				printk(BUZ_ERR ": VIDIOCSWIN: window does not fit frame buffer: %dx%d+%d*%d\n",
+				       vw.width, vw.height, vw.x, vw.y);
+				return -EINVAL;
+			}
+#else
+			if (vw.x < 0)
+				vw.x = 0;
+			if (vw.y < 0)
+				vw.y = 0;
+			if (vw.x + vw.width > zr->buffer.width)
+				vw.width = zr->buffer.width - vw.x;
+			if (vw.y + vw.height > zr->buffer.height)
+				vw.height = zr->buffer.height - vw.y;
+#endif
+#endif
+
+			/* Check for vaild parameters */
+			if (vw.width < BUZ_MIN_WIDTH || vw.height < BUZ_MIN_HEIGHT ||
+			    vw.width > BUZ_MAX_WIDTH || vw.height > BUZ_MAX_HEIGHT) {
+				return -EINVAL;
+			}
+#ifdef XAWTV_HACK
+			if (vw.width > 720)
+				vw.width = 720;
+#endif
+
+			zr->window.x = vw.x;
+			zr->window.y = vw.y;
+			zr->window.width = vw.width;
+			zr->window.height = vw.height;
+			zr->window.chromakey = 0;
+			zr->window.flags = 0;	// RJ: Is this intended for interlace on/off ?
+
+			zr->window.clips = NULL;
+			zr->window.clipcount = vw.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;
+			if (on)
+				zr36057_overlay(zr, 0);
+
+			/*
+			 *   Write the overlay mask if clips are wanted.
+			 */
+			if (vw.clipcount) {
+				vcp = vmalloc(sizeof(struct video_clip) * (vw.clipcount + 4));
+				if (vcp == NULL) {
+					return -ENOMEM;
+				}
+				if (copy_from_user(vcp, vw.clips, sizeof(struct video_clip) * vw.clipcount)) {
+					vfree(vcp);
+					return -EFAULT;
+				}
+				write_overlay_mask(zr, vcp, vw.clipcount);
+				vfree(vcp);
+			}
+			if (on)
+				zr36057_overlay(zr, 1);
+			zr->window_set = 1;
+
+			/* Make sure the changes come into effect */
+			res = wait_grab_pending(zr);
+			if (res)
+				return res;
+
+			return 0;
+		}
+
+	case VIDIOCGFBUF:
+		{
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCGFBUF\n"));
+			if (copy_to_user(arg, &zr->buffer, sizeof(zr->buffer))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+	case VIDIOCSFBUF:
+		{
+			struct video_buffer v;
+
+			if (!capable(CAP_SYS_ADMIN))
+				return -EPERM;
+
+			if (copy_from_user(&v, arg, sizeof(v)))
+				return -EFAULT;
+			
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCSFBUF: base=0x%x w=%d h=%d depth=%d bpl=%d\n", (u32) v.base, v.width, v.height, v.depth, v.bytesperline));
+			if (zr->v4l_overlay_active) {
+				/* Has the user gotten crazy ... ? */
+				return -EINVAL;
+			}
+			if (v.depth != 15
+			    && v.depth != 16
+			    && v.depth != 24
+			    && v.depth != 32) {
+				return -EINVAL;
+			}
+			if (v.height <= 0 || v.width <= 0 || v.bytesperline <= 0) {
+				return -EINVAL;
+			}
+			if (v.bytesperline & 3) {
+				return -EINVAL;
+			}
+			if (v.base) {
+				zr->buffer.base = (void *) ((unsigned long) v.base & ~3);
+			}
+			zr->buffer.height = v.height;
+			zr->buffer.width = v.width;
+			zr->buffer.depth = v.depth;
+			zr->buffer.bytesperline = v.bytesperline;
+
+			if (zr->buffer.base)
+				zr->buffer_set = 1;
+			zr->window_set = 0;	/* The user should set new window parameters */
+			return 0;
+		}
+
+		/* RJ: what is VIDIOCKEY intended to do ??? */
+
+	case VIDIOCGFREQ:
+	case VIDIOCSFREQ:
+	case VIDIOCGAUDIO:
+	case VIDIOCSAUDIO:
+		return -EINVAL;
+		
+	case VIDIOCSYNC:
+		{
+			int v;
+
+			if (copy_from_user(&v, arg, sizeof(v))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCSYNC %d\n", v));
+			return v4l_sync(zr, v);
+		}
+
+	case VIDIOCMCAPTURE:
+		{
+			struct video_mmap vm;
+
+			if (copy_from_user((void *) &vm, (void *) arg, sizeof(vm))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCMCAPTURE frame=%d geom=%dx%d fmt=%d\n",
+			       vm.frame, vm.height, vm.width, vm.format));
+			return v4l_grab(zr, &vm);
+		}
+
+	case VIDIOCGMBUF:
+		{
+			struct video_mbuf vm;
+			int i;
+
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCGMBUF\n"));
+		
+			vm.size = v4l_nbufs * v4l_bufsize;
+			vm.frames = v4l_nbufs;
+			for (i = 0; i < v4l_nbufs; i++) {
+				vm.offsets[i] = i * v4l_bufsize;
+			}
+
+			/* The next mmap will map the V4L buffers */
+			zr->map_mjpeg_buffers = 0;
+
+			if (copy_to_user(arg, &vm, sizeof(vm))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+	case VIDIOCGUNIT:
+		{
+			struct video_unit vu;
+
+			IOCTL_DEBUG(printk("buz ioctl VIDIOCGUNIT\n"));
+			vu.video = zr->video_dev.minor;
+			vu.vbi = VIDEO_NO_UNIT;
+			vu.radio = VIDEO_NO_UNIT;
+			vu.audio = VIDEO_NO_UNIT;
+			vu.teletext = VIDEO_NO_UNIT;
+			if (copy_to_user(arg, &vu, sizeof(vu)))
+				return -EFAULT;
+			return 0;
+		}
+
+		/*
+		 * 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:
+	case VIDIOCSCAPTURE:
+			return -EINVAL;
+
+	case BUZIOC_G_PARAMS:
+		{
+			IOCTL_DEBUG(printk("buz ioctl BUZIOC_G_PARAMS\n"));
+			if (copy_to_user(arg, &(zr->params), sizeof(zr->params))) 
+				return -EFAULT;
+			return 0;
+		}
+
+	case BUZIOC_S_PARAMS:
+		{
+			struct zoran_params bp;
+			int input, on;
+
+			if (zr->codec_mode != BUZ_MODE_IDLE) {
+				return -EINVAL;
+			}
+			if (copy_from_user(&bp, arg, sizeof(bp))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl BUZIOC_S_PARAMS\n"));
+			
+			/* Check the params first before overwriting our internal values */
+
+			if (zoran_check_params(zr, &bp))
+				return -EINVAL;
+
+			zr->params = bp;
+
+			/* Make changes of input and norm go into effect immediatly */
+
+			/* We switch overlay off and on since a change in the norm
+			   needs different VFE settings */
+
+			on = zr->v4l_overlay_active && !zr->v4l_memgrab_active;
+			if (on)
+				zr36057_overlay(zr, 0);
+
+			input = zr->params.input == 0 ? 3 : 7;
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &input);
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &zr->params.norm);
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_NORM, &zr->params.norm);
+
+			if (on)
+				zr36057_overlay(zr, 1);
+
+			if (copy_to_user(arg, &bp, sizeof(bp))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+	case BUZIOC_REQBUFS:
+		{
+			struct zoran_requestbuffers br;
+
+			if (zr->jpg_buffers_allocated) {
+				return -EINVAL;
+			}
+			if (copy_from_user(&br, arg, sizeof(br))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl BUZIOC_REQBUFS count = %lu size=%lu\n",
+					   br.count, br.size));
+			/* Enforce reasonable lower and upper limits */
+			if (br.count < 4)
+				br.count = 4;	/* Could be choosen smaller */
+			if (br.count > BUZ_MAX_FRAME)
+				br.count = BUZ_MAX_FRAME;
+			br.size = PAGE_ALIGN(br.size);
+			if (br.size < 8192)
+				br.size = 8192;		/* Arbitrary */
+			/* br.size is limited by 1 page for the stat_com tables to a Maximum of 2 MB */
+			if (br.size > (512 * 1024))
+				br.size = (512 * 1024);		/* 512 K should be enough */
+			if (zr->need_contiguous && br.size > MAX_KMALLOC_MEM)
+				br.size = MAX_KMALLOC_MEM;
+
+			zr->jpg_nbufs = br.count;
+			zr->jpg_bufsize = br.size;
+
+			if (jpg_fbuffer_alloc(zr))
+				return -ENOMEM;
+
+			/* The next mmap will map the MJPEG buffers */
+			zr->map_mjpeg_buffers = 1;
+
+			if (copy_to_user(arg, &br, sizeof(br))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+	case BUZIOC_QBUF_CAPT:
+		{
+			int nb;
+
+			if (copy_from_user((void *) &nb, (void *) arg, sizeof(int))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl BUZIOC_QBUF_CAPT %d\n", nb));
+			return jpg_qbuf(zr, nb, BUZ_MODE_MOTION_COMPRESS);
+		}
+
+	case BUZIOC_QBUF_PLAY:
+		{
+			int nb;
+
+			if (copy_from_user((void *) &nb, (void *) arg, sizeof(int))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl BUZIOC_QBUF_PLAY %d\n", nb));
+			return jpg_qbuf(zr, nb, BUZ_MODE_MOTION_DECOMPRESS);
+		}
+
+	case BUZIOC_SYNC:
+		{
+			struct zoran_sync bs;
+			int res;
+
+			IOCTL_DEBUG(printk("buz ioctl BUZIOC_SYNC\n"));
+			res = jpg_sync(zr, &bs);
+			if (copy_to_user(arg, &bs, sizeof(bs))) {
+				return -EFAULT;
+			}
+			return res;
+		}
+
+	case BUZIOC_G_STATUS:
+		{
+			struct zoran_status bs;
+			int norm, input, status;
+
+			if (zr->codec_mode != BUZ_MODE_IDLE) {
+				return -EINVAL;
+			}
+			if (copy_from_user(&bs, arg, sizeof(bs))) {
+				return -EFAULT;
+			}
+			IOCTL_DEBUG(printk("buz ioctl BUZIOC_G_STATUS\n"));
+			switch (bs.input) {
+			case 0:
+				input = 3;
+				break;
+			case 1:
+				input = 7;
+				break;
+			default:
+				return -EINVAL;
+			}
+
+			/* Set video norm to VIDEO_MODE_AUTO */
+
+			norm = VIDEO_MODE_AUTO;
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &input);
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &norm);
+
+			/* sleep 1 second */
+
+			schedule_timeout(HZ);
+			
+			/* Get status of video decoder */
+
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_GET_STATUS, &status);
+			bs.signal = (status & DECODER_STATUS_GOOD) ? 1 : 0;
+			bs.norm = (status & DECODER_STATUS_NTSC) ? VIDEO_MODE_NTSC : VIDEO_MODE_PAL;
+			bs.color = (status & DECODER_STATUS_COLOR) ? 1 : 0;
+
+			/* restore previous input and norm */
+			input = zr->params.input == 0 ? 3 : 7;
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &input);
+			i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &zr->params.norm);
+
+			if (copy_to_user(arg, &bs, sizeof(bs))) {
+				return -EFAULT;
+			}
+			return 0;
+		}
+
+	default:
+		    return -ENOIOCTLCMD;
+
+	}
+	return 0;
+}
+
+
+/*
+ *   This maps the buffers to user space.
+ *
+ *   Depending on the state of zr->map_mjpeg_buffers
+ *   the V4L or the MJPEG buffers are mapped
+ *
+ */
+
+static int zoran_mmap(struct video_device *dev, const char *adr, unsigned long size)
+{
+	struct zoran *zr = (struct zoran *) dev;
+	unsigned long start = (unsigned long) adr;
+	unsigned long page, pos, todo, fraglen;
+	int i, j;
+
+	if (zr->map_mjpeg_buffers) {
+		/* Map the MJPEG buffers */
+
+		if (!zr->jpg_buffers_allocated) {
+			return -ENOMEM;
+		}
+		if (size > zr->jpg_nbufs * zr->jpg_bufsize) {
+			return -EINVAL;
+		}
+
+		for (i = 0; i < zr->jpg_nbufs; i++) {
+			for (j = 0; j < zr->jpg_bufsize / PAGE_SIZE; j++) {
+				fraglen = (zr->jpg_gbuf[i].frag_tab[2 * j + 1] & ~1) << 1;
+				todo = size;
+				if (todo > fraglen)
+					todo = fraglen;
+				pos = (unsigned long) zr->jpg_gbuf[i].frag_tab[2 * j];
+				page = virt_to_phys(bus_to_virt(pos));	/* should just be pos on i386 */
+				if (remap_page_range(start, page, todo, PAGE_SHARED)) {
+					printk(KERN_ERR "%s: zoran_mmap(V4L): remap_page_range failed\n", zr->name);
+					return -EAGAIN;
+				}
+				size -= todo;
+				start += todo;
+				if (size == 0)
+					break;
+				if (zr->jpg_gbuf[i].frag_tab[2 * j + 1] & 1)
+					break;	/* was last fragment */
+			}
+			if (size == 0)
+				break;
+		}
+	} else {
+		/* Map the V4L buffers */
+
+		if (size > v4l_nbufs * v4l_bufsize) {
+			return -EINVAL;
+		}
+
+		for (i = 0; i < v4l_nbufs; i++) {
+			todo = size;
+			if (todo > v4l_bufsize)
+				todo = v4l_bufsize;
+			page = zr->v4l_gbuf[i].fbuffer_phys;
+			DEBUG(printk("V4L remap page range %d 0x%x %d to 0x%x\n", i, page, todo, start));
+			if (remap_page_range(start, page, todo, PAGE_SHARED)) {
+				printk(KERN_ERR "%s: zoran_mmap(V4L): remap_page_range failed\n", zr->name);
+				return -EAGAIN;
+			}
+			size -= todo;
+			start += todo;
+			if (size == 0)
+				break;
+		}
+	}
+	return 0;
+}
+
+static int zoran_init_done(struct video_device *dev)
+{
+	return 0;
+}
+
+static struct video_device zoran_template =
+{
+	BUZ_NAME,
+	VID_TYPE_CAPTURE | VID_TYPE_OVERLAY | VID_TYPE_CLIPPING | VID_TYPE_FRAMERAM |
+	VID_TYPE_SCALES | VID_TYPE_SUBCAPTURE,
+	VID_HARDWARE_BT848,	/* Not true, but the buz is not yet in the list */
+	zoran_open,
+	zoran_close,
+	zoran_read,
+	zoran_write,
+	NULL,
+	zoran_ioctl,
+	zoran_mmap,
+	zoran_init_done,
+	NULL,
+	0,
+	0
+};
+
+static int zr36057_init(int i)
+{
+	struct zoran *zr = &zoran[i];
+	unsigned long mem;
+	unsigned mem_needed;
+	int j;
+	int rev;
+
+	/* reset zr36057 */
+	btwrite(0, ZR36057_SPGPPCR);
+	mdelay(10);
+
+	/* default setup of all parameters which will persist beetween opens */
+
+	zr->user = 0;
+	
+	init_waitqueue_head(&zr->v4l_capq);
+	init_waitqueue_head(&zr->jpg_capq);
+
+	zr->map_mjpeg_buffers = 0;	/* Map V4L buffers by default */
+
+	zr->jpg_nbufs = 0;
+	zr->jpg_bufsize = 0;
+	zr->jpg_buffers_allocated = 0;
+
+	zr->buffer_set = 0;	/* Flag if frame buffer has been set */
+	zr->buffer.base = (void *) vidmem;
+	zr->buffer.width = 0;
+	zr->buffer.height = 0;
+	zr->buffer.depth = 0;
+	zr->buffer.bytesperline = 0;
+
+	zr->params.norm = default_norm ? 1 : 0;	/* Avoid nonsense settings from user */
+	zr->params.input = default_input ? 1 : 0;	/* Avoid nonsense settings from user */
+	zr->video_interlace = 0;
+
+	/* Should the following be reset at every open ? */
+
+	zr->picture.colour = 32768;
+	zr->picture.brightness = 32768;
+	zr->picture.hue = 32768;
+	zr->picture.contrast = 32768;
+	zr->picture.whiteness = 0;
+	zr->picture.depth = 0;
+	zr->picture.palette = 0;
+
+	for (j = 0; j < VIDEO_MAX_FRAME; j++) {
+		zr->v4l_gbuf[i].fbuffer = 0;
+		zr->v4l_gbuf[i].fbuffer_phys = 0;
+		zr->v4l_gbuf[i].fbuffer_bus = 0;
+	}
+
+	zr->stat_com = 0;
+
+	/* default setup (will be repeated at every open) */
+
+	zoran_open_init_params(zr);
+
+	/* allocate memory *before* doing anything to the hardware in case allocation fails */
+
+	/* STAT_COM table and overlay mask */
+
+	mem_needed = (BUZ_NUM_STAT_COM + ((BUZ_MAX_WIDTH + 31) / 32) * BUZ_MAX_HEIGHT) * 4;
+	mem = (unsigned long) kmalloc(mem_needed, GFP_KERNEL);
+	if (!mem) {
+		return -ENOMEM;
+	}
+	memset((void *) mem, 0, mem_needed);
+
+	zr->stat_com = (u32 *) mem;
+	for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
+		zr->stat_com[j] = 1;	/* mark as unavailable to zr36057 */
+	}
+	zr->overlay_mask = (u32 *) (mem + BUZ_NUM_STAT_COM * 4);
+
+	/* Initialize zr->jpg_gbuf */
+
+	for (j = 0; j < BUZ_MAX_FRAME; j++) {
+		zr->jpg_gbuf[j].frag_tab = 0;
+		zr->jpg_gbuf[j].frag_tab_bus = 0;
+		zr->jpg_gbuf[j].state = BUZ_STATE_USER;
+		zr->jpg_gbuf[j].bs.frame = j;
+	}
+
+	/* take zr36057 out of reset now */
+	btwrite(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
+	mdelay(10);
+
+	/* stop all DMA processes */
+	btwrite(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
+	btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
+	/* assert P_Reset */
+	btwrite(0, ZR36057_JPC);
+
+	switch(zr->board)
+	{
+		case BOARD_BUZ:
+	
+			/* set up GPIO direction */
+			btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
+
+			/* Set up guest bus timing - Guests 0..3 Tdur=12, Trec=3 */
+			btwrite((GPIO_MASK << 24) | 0x8888, ZR36057_GPPGCR1);
+			mdelay(10);
+
+			/* reset video decoder */
+
+			GPIO(zr, 0, 0);
+			mdelay(10);
+			GPIO(zr, 0, 1);
+			mdelay(10);
+
+			/* reset JPEG codec */
+			zr36060_sleep(zr, 0);
+			mdelay(10);
+			zr36060_reset(zr);
+			mdelay(10);
+			zr36060_sleep(zr, 1);
+			mdelay(10);
+	
+			/* display codec revision */
+			if ((rev=zr36060_read_8(zr, 0x022)) == 0x33) {
+				printk(KERN_INFO "%s: Zoran ZR36060 (rev %d)\n",
+			       zr->name, zr36060_read_8(zr, 0x023));
+			} else {
+				printk(KERN_ERR "%s: Zoran ZR36060 not found (Rev=%d)\n", zr->name, rev);
+				kfree((void *) zr->stat_com);
+				return -1;
+			}
+			break;
+			
+		case BOARD_LML33:
+//			btwrite(btread(ZR36057_SPGPPCR)&~ZR36057_SPGPPCR_SoftReset , ZR36057_SPGPPCR);
+//			udelay(100);
+//			btwrite(btread(ZR36057_SPGPPCR)|ZR36057_SPGPPCR_SoftReset , ZR36057_SPGPPCR);
+//			udelay(1000);
+
+			/*
+			 *	Set up the GPIO direction
+			 */
+			btwrite(btread(ZR36057_SPGPPCR_SoftReset)|0 , ZR36057_SPGPPCR);
+			/* Set up guest bus timing - Guests 0..2 Tdur=12, Trec=3 */
+			btwrite(0xFF00F888, ZR36057_GPPGCR1);
+			mdelay(10);
+			GPIO(zr, 5, 0);		/* Analog video bypass */
+			udelay(3000);
+			GPIO(zr, 0, 0); 	/* Reset 819 */
+			udelay(3000);
+			GPIO(zr, 0, 1);		/* 819 back */
+			udelay(3000);
+			/* reset JPEG codec */
+			zr36060_sleep(zr, 0);
+			udelay(3000);
+			zr36060_reset(zr);
+			udelay(3000);
+			zr36060_sleep(zr, 1);
+			udelay(3000);
+
+			/* display codec revision */
+			if ((rev=zr36060_read_8(zr, 0x022)) == 0x33) {
+				printk(KERN_INFO "%s: Zoran ZR36060 (rev %d)\n",
+			       zr->name, zr36060_read_8(zr, 0x023));
+			} else {
+				printk(KERN_ERR "%s: Zoran ZR36060 not found (rev=%d)\n", zr->name, rev);
+//				kfree((void *) zr->stat_com);
+//				return -1;
+			}
+			break;
+	}
+	/* i2c */
+	memcpy(&zr->i2c, &zoran_i2c_bus_template, sizeof(struct i2c_bus));
+	sprintf(zr->i2c.name, "zoran%u%u", zr->id);
+	zr->i2c.data = zr;
+	if (i2c_register_bus(&zr->i2c) < 0) {
+		kfree((void *) zr->stat_com);
+		return -1;
+	}
+	/*
+	 *   Now add the template and register the device unit.
+	 */
+	memcpy(&zr->video_dev, &zoran_template, sizeof(zoran_template));
+	sprintf(zr->video_dev.name, "zoran%u", zr->id);
+	if (video_register_device(&zr->video_dev, VFL_TYPE_GRABBER) < 0) {
+		i2c_unregister_bus(&zr->i2c);
+		kfree((void *) zr->stat_com);
+		return -1;
+	}
+	/* toggle JPEG codec sleep to sync PLL */
+	zr36060_sleep(zr, 1);
+	mdelay(10);
+	zr36060_sleep(zr, 0);
+	mdelay(10);
+
+	/* Enable bus-mastering */
+	pci_set_master(zr->pci_dev);
+
+	j = zr->params.input == 0 ? 3 : 7;
+	i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &j);
+	i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &zr->params.norm);
+	i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_NORM, &zr->params.norm);
+
+	/* set individual interrupt enables (without GIRQ0)
+	   but don't global enable until zoran_open() */
+
+	btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ0, ZR36057_ICR);
+
+	if(request_irq(zr->pci_dev->irq, zoran_irq,
+	       SA_SHIRQ | SA_INTERRUPT, zr->name, (void *) zr)<0)
+	{
+		printk(KERN_ERR "%s: Can't assign irq.\n", zr->name);
+		video_unregister_device(&zr->video_dev);
+		i2c_unregister_bus(&zr->i2c);
+		kfree((void *) zr->stat_com);
+		return -1;
+	}
+	zr->initialized = 1;
+	return 0;
+}
+
+
+
+static void release_zoran(void)
+{
+	u8 command;
+	int i;
+	struct zoran *zr;
+
+	for (i = 0; i < zoran_num; i++) {
+		zr = &zoran[i];
+
+		if (!zr->initialized)
+			continue;
+
+		/* unregister i2c_bus */
+		i2c_unregister_bus((&zr->i2c));
+
+		/* disable PCI bus-mastering */
+		pci_read_config_byte(zr->pci_dev, PCI_COMMAND, &command);
+		command &= ~PCI_COMMAND_MASTER;
+		pci_write_config_byte(zr->pci_dev, PCI_COMMAND, command);
+
+		/* put chip into reset */
+		btwrite(0, ZR36057_SPGPPCR);
+
+		free_irq(zr->pci_dev->irq, zr);
+
+		/* unmap and free memory */
+
+		kfree((void *) zr->stat_com);
+
+		iounmap(zr->zr36057_mem);
+
+		video_unregister_device(&zr->video_dev);
+	}
+}
+
+/*
+ *   Scan for a Buz card (actually for the PCI controller ZR36057),
+ *   request the irq and map the io memory
+ */
+
+static int find_zr36057(void)
+{
+	unsigned char latency;
+	struct zoran *zr;
+	struct pci_dev *dev = NULL;
+
+	zoran_num = 0;
+
+	while (zoran_num < BUZ_MAX
+	       && (dev = pci_find_device(PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36057, dev)) != NULL) {
+		zr = &zoran[zoran_num];
+		zr->pci_dev = dev;
+		zr->zr36057_mem = NULL;
+		zr->id = zoran_num;
+		sprintf(zr->name, "zoran%u", zr->id);
+
+		spin_lock_init(&zr->lock);
+
+		zr->zr36057_adr = zr->pci_dev->base_address[0] & PCI_BASE_ADDRESS_MEM_MASK;
+		pci_read_config_byte(zr->pci_dev, PCI_CLASS_REVISION, &zr->revision);
+		if (zr->revision < 2) {
+			printk(KERN_INFO "%s: Zoran ZR36057 (rev %d) irq: %d, memory: 0x%08x.\n",
+			       zr->name, zr->revision, zr->pci_dev->irq, zr->zr36057_adr);
+		} else {
+			unsigned short ss_vendor_id, ss_id;
+
+			pci_read_config_word(zr->pci_dev, PCI_SUBSYSTEM_VENDOR_ID, &ss_vendor_id);
+			pci_read_config_word(zr->pci_dev, PCI_SUBSYSTEM_ID, &ss_id);
+			printk(KERN_INFO "%s: Zoran ZR36067 (rev %d) irq: %d, memory: 0x%08x\n",
+			       zr->name, zr->revision, zr->pci_dev->irq, zr->zr36057_adr);
+			printk(KERN_INFO "%s: subsystem vendor=0x%04x id=0x%04x\n",
+			       zr->name, ss_vendor_id, ss_id);
+			if(ss_vendor_id==0xFF10 && ss_id == 0xDE41)
+			{
+				zr->board = BOARD_LML33;
+				printk(KERN_INFO "%s: LML33 detected.\n", zr->name);
+			}
+		}
+
+		zr->zr36057_mem = ioremap(zr->zr36057_adr, 0x1000);
+
+		/* set PCI latency timer */
+		pci_read_config_byte(zr->pci_dev, PCI_LATENCY_TIMER, &latency);
+		if (latency != 48) {
+			printk(KERN_INFO "%s: Changing PCI latency from %d to 48.\n", zr->name, latency);
+			latency = 48;
+			pci_write_config_byte(zr->pci_dev, PCI_LATENCY_TIMER, latency);
+		}
+		zoran_num++;
+	}
+	if (zoran_num == 0)
+		printk(KERN_INFO "zoran: no cards found.\n");
+
+	return zoran_num;
+}
+
+#include "chipsets.h"
+
+static void handle_chipset(void)
+{
+	int index;
+	struct pci_dev *dev = NULL;
+
+	for (index = 0; index < sizeof(black) / sizeof(black[0]); index++) {
+		if ((dev = pci_find_device(black[index].vendor, black[index].device, dev)) != NULL) {
+			printk(KERN_INFO ": Host bridge: %s, ", black[index].name);
+			switch (black[index].action) {
+
+			case TRITON:
+				printk("enabling Triton support.\n");
+				triton = 1;
+				break;
+
+			case NATOMA:
+				printk("enabling Natoma workaround.\n");
+				natoma = 1;
+				break;
+			}
+		}
+	}
+}
+
+#ifdef MODULE
+int init_module(void)
+#else
+int init_zoran_cards(struct video_init *unused)
+#endif
+{
+	int i;
+
+
+	printk(KERN_INFO "Zoran driver 1.00 (c) 1999 Rainer Johanni, Dave Perks.\n");
+
+	/* Look for Buz cards */
+
+	if (find_zr36057() <= 0) {
+		return -EIO;
+	}
+	printk(KERN_INFO"zoran: %d zoran card(s) found\n", zoran_num);
+
+	if (zoran_num == 0)
+		return -ENXIO;
+
+	
+	/* check the parameters we have been given, adjust if necessary */
+
+	if (v4l_nbufs < 0)
+		v4l_nbufs = 0;
+	if (v4l_nbufs > VIDEO_MAX_FRAME)
+		v4l_nbufs = VIDEO_MAX_FRAME;
+	/* The user specfies the in KB, we want them in byte (and page aligned) */
+	v4l_bufsize = PAGE_ALIGN(v4l_bufsize * 1024);
+	if (v4l_bufsize < 32768)
+		v4l_bufsize = 32768;
+	/* 2 MB is arbitrary but sufficient for the maximum possible images */
+	if (v4l_bufsize > 2048 * 1024)
+		v4l_bufsize = 2048 * 1024;
+
+	printk(KERN_INFO "zoran: using %d V4L buffers of size %d KB\n", v4l_nbufs, v4l_bufsize >> 10);
+
+	/* Use parameter for vidmem or try to find a video card */
+
+	if (vidmem) {
+		printk(KERN_INFO "zoran: Using supplied video memory base address @ 0x%lx\n", vidmem);
+	}
+
+	/* check if we have a Triton or Natome chipset */
+
+	handle_chipset();
+
+	/* take care of Natoma chipset and a revision 1 zr36057 */
+
+	for (i = 0; i < zoran_num; i++) {
+		if (natoma && zoran[i].revision <= 1) {
+			zoran[i].need_contiguous = 1;
+			printk(KERN_INFO "%s: ZR36057/Natome bug, max. buffer size is 128K\n", zoran[i].name);
+		} else {
+			zoran[i].need_contiguous = 0;
+		}
+	}
+
+	/* initialize the Buzs */
+
+	/* We have to know which ones must be released if an error occurs */
+	for (i = 0; i < zoran_num; i++)
+		zoran[i].initialized = 0;
+
+	for (i = 0; i < zoran_num; i++) {
+		if (zr36057_init(i) < 0) {
+			release_zoran();
+			return -EIO;
+		}
+	}
+
+	return 0;
+}
+
+
+
+#ifdef MODULE
+
+void cleanup_module(void)
+{
+	release_zoran();
+}
+
+#endif