Linux-2.6.12-rc2v2.6.12-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, 2073 insertions, 0 deletions

diff --git a/drivers/media/video/zr36120.c b/drivers/media/video/zr36120.c
new file mode 100644
index 000000000000..c33533155cc7
--- /dev/null
+++ b/drivers/media/video/zr36120.c
@@ -0,0 +1,2073 @@
+/*
+    zr36120.c - Zoran 36120/36125 based framegrabbers
+
+    Copyright (C) 1998-1999 Pauline Middelink <middelin@polyware.nl>
+
+    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/init.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <linux/wait.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <linux/sched.h>
+#include <linux/video_decoder.h>
+
+#include <asm/uaccess.h>
+
+#include "tuner.h"
+#include "zr36120.h"
+#include "zr36120_mem.h"
+
+/* mark an required function argument unused - lintism */
+#define	UNUSED(x)	(void)(x)
+
+/* sensible default */
+#ifndef CARDTYPE
+#define CARDTYPE 0
+#endif
+
+/* Anybody who uses more than four? */
+#define ZORAN_MAX 4
+
+static unsigned int triton1=0;			/* triton1 chipset? */
+static unsigned int cardtype[ZORAN_MAX]={ [ 0 ... ZORAN_MAX-1 ] = CARDTYPE };
+static int video_nr = -1;
+static int vbi_nr = -1;
+
+static struct pci_device_id zr36120_pci_tbl[] = {
+	{ PCI_VENDOR_ID_ZORAN,PCI_DEVICE_ID_ZORAN_36120,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(pci, zr36120_pci_tbl);
+
+MODULE_AUTHOR("Pauline Middelink <middelin@polyware.nl>");
+MODULE_DESCRIPTION("Zoran ZR36120 based framegrabber");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM(triton1,"i");
+MODULE_PARM(cardtype,"1-" __MODULE_STRING(ZORAN_MAX) "i");
+MODULE_PARM(video_nr,"i");
+MODULE_PARM(vbi_nr,"i");
+
+static int zoran_cards;
+static struct zoran zorans[ZORAN_MAX];
+
+/*
+ * the meaning of each element can be found in zr36120.h
+ * Determining the value of gpdir/gpval can be tricky. The
+ * best way is to run the card under the original software
+ * and read the values from the general purpose registers
+ * 0x28 and 0x2C. How you do that is left as an exercise
+ * to the impatient reader :)
+ */
+#define T 1	/* to separate the bools from the ints */
+#define F 0
+static struct tvcard tvcards[] = {
+	/* reported working by <middelin@polyware.nl> */
+/*0*/	{ "Trust Victor II",
+	  2, 0, T, T, T, T, 0x7F, 0x80, { 1, SVHS(6) }, { 0 } },
+	/* reported working by <Michael.Paxton@aihw.gov.au>  */
+/*1*/   { "Aitech WaveWatcher TV-PCI",
+	  3, 0, T, F, T, T, 0x7F, 0x80, { 1, TUNER(3), SVHS(6) }, { 0 } },
+	/* reported working by ? */
+/*2*/	{ "Genius Video Wonder PCI Video Capture Card",
+	  2, 0, T, T, T, T, 0x7F, 0x80, { 1, SVHS(6) }, { 0 } },
+	/* reported working by <Pascal.Gabriel@wanadoo.fr> */
+/*3*/	{ "Guillemot Maxi-TV PCI",
+	  2, 0, T, T, T, T, 0x7F, 0x80, { 1, SVHS(6) }, { 0 } },
+	/* reported working by "Craig Whitmore <lennon@igrin.co.nz> */
+/*4*/	{ "Quadrant Buster",
+	  3, 3, T, F, T, T, 0x7F, 0x80, { SVHS(1), TUNER(2), 3 }, { 1, 2, 3 } },
+	/* a debug entry which has all inputs mapped */
+/*5*/	{ "ZR36120 based framegrabber (all inputs enabled)",
+	  6, 0, T, T, T, T, 0x7F, 0x80, { 1, 2, 3, 4, 5, 6 }, { 0 } }
+};
+#undef T
+#undef F
+#define NRTVCARDS (sizeof(tvcards)/sizeof(tvcards[0]))
+
+#ifdef __sparc__
+#define	ENDIANESS	0
+#else
+#define	ENDIANESS	ZORAN_VFEC_LE
+#endif
+
+static struct { const char name[8]; uint mode; uint bpp; } palette2fmt[] = {
+/* n/a     */	{ "n/a",     0, 0 },
+/* GREY    */	{ "GRAY",    0, 0 },
+/* HI240   */	{ "HI240",   0, 0 },
+/* RGB565  */	{ "RGB565",  ZORAN_VFEC_RGB_RGB565|ENDIANESS, 2 },
+/* RGB24   */	{ "RGB24",   ZORAN_VFEC_RGB_RGB888|ENDIANESS|ZORAN_VFEC_PACK24, 3 },
+/* RGB32   */	{ "RGB32",   ZORAN_VFEC_RGB_RGB888|ENDIANESS, 4 },
+/* RGB555  */	{ "RGB555",  ZORAN_VFEC_RGB_RGB555|ENDIANESS, 2 },
+/* YUV422  */	{ "YUV422",  ZORAN_VFEC_RGB_YUV422|ENDIANESS, 2 },
+/* YUYV    */	{ "YUYV",    0, 0 },
+/* UYVY    */	{ "UYVY",    0, 0 },
+/* YUV420  */	{ "YUV420",  0, 0 },
+/* YUV411  */	{ "YUV411",  0, 0 },
+/* RAW     */	{ "RAW",     0, 0 },
+/* YUV422P */	{ "YUV422P", 0, 0 },
+/* YUV411P */	{ "YUV411P", 0, 0 }};
+#define NRPALETTES (sizeof(palette2fmt)/sizeof(palette2fmt[0]))
+#undef ENDIANESS
+
+/* ----------------------------------------------------------------------- */
+/* ZORAN chipset detector                                                 */
+/* shamelessly stolen from bttv.c                                         */
+/* Reason for beeing here: we need to detect if we are running on a        */
+/* Triton based chipset, and if so, enable a certain bit                   */
+/* ----------------------------------------------------------------------- */
+static
+void __init handle_chipset(void)
+{
+	/* Just in case some nut set this to something dangerous */
+	if (triton1)
+		triton1 = ZORAN_VDC_TRICOM;
+
+	if (pci_pci_problems & PCIPCI_TRITON) {
+		printk(KERN_INFO "zoran: Host bridge 82437FX Triton PIIX\n");
+		triton1 = ZORAN_VDC_TRICOM;
+	}
+}
+
+/* ----------------------------------------------------------------------- */
+/* ZORAN functions							   */
+/* ----------------------------------------------------------------------- */
+
+static void zoran_set_geo(struct zoran* ztv, struct vidinfo* i);
+
+#if 0 /* unused */
+static
+void zoran_dump(struct zoran *ztv)
+{
+	char	str[256];
+	char	*p=str; /* shut up, gcc! */
+	int	i;
+
+	for (i=0; i<0x60; i+=4) {
+		if ((i % 16) == 0) {
+			if (i) printk("%s\n",str);
+			p = str;
+			p+= sprintf(str, KERN_DEBUG "       %04x: ",i);
+		}
+		p += sprintf(p, "%08x ",zrread(i));
+	}
+}
+#endif /* unused */
+
+static
+void reap_states(struct zoran* ztv)
+{
+	/* count frames */
+	ztv->fieldnr++;
+
+	/*
+	 * Are we busy at all?
+	 * This depends on if there is a workqueue AND the
+	 * videotransfer is enabled on the chip...
+	 */
+	if (ztv->workqueue && (zrread(ZORAN_VDC) & ZORAN_VDC_VIDEN))
+	{
+		struct vidinfo* newitem;
+
+		/* did we get a complete frame? */
+		if (zrread(ZORAN_VSTR) & ZORAN_VSTR_GRAB)
+			return;
+
+DEBUG(printk(CARD_DEBUG "completed %s at %p\n",CARD,ztv->workqueue->kindof==FBUFFER_GRAB?"grab":"read",ztv->workqueue));
+
+		/* we are done with this buffer, tell everyone */
+		ztv->workqueue->status = FBUFFER_DONE;
+		ztv->workqueue->fieldnr = ztv->fieldnr;
+		/* not good, here for BTTV_FIELDNR reasons */
+		ztv->lastfieldnr = ztv->fieldnr;
+
+		switch (ztv->workqueue->kindof) {
+		 case FBUFFER_GRAB:
+			wake_up_interruptible(&ztv->grabq);
+			break;
+		 case FBUFFER_VBI:
+			wake_up_interruptible(&ztv->vbiq);
+			break;
+		 default:
+			printk(CARD_INFO "somebody killed the workqueue (kindof=%d)!\n",CARD,ztv->workqueue->kindof);
+		}
+
+		/* item completed, skip to next item in queue */
+		write_lock(&ztv->lock);
+		newitem = ztv->workqueue->next;
+		ztv->workqueue->next = 0;	/* mark completed */
+		ztv->workqueue = newitem;
+		write_unlock(&ztv->lock);
+	}
+
+	/*
+	 * ok, so it seems we have nothing in progress right now.
+	 * Lets see if we can find some work.
+	 */
+	if (ztv->workqueue)
+	{
+		struct vidinfo* newitem;
+again:
+
+DEBUG(printk(CARD_DEBUG "starting %s at %p\n",CARD,ztv->workqueue->kindof==FBUFFER_GRAB?"grab":"read",ztv->workqueue));
+
+		/* loadup the frame settings */
+		read_lock(&ztv->lock);
+		zoran_set_geo(ztv,ztv->workqueue);
+		read_unlock(&ztv->lock);
+
+		switch (ztv->workqueue->kindof) {
+		 case FBUFFER_GRAB:
+		 case FBUFFER_VBI:
+			zrand(~ZORAN_OCR_OVLEN, ZORAN_OCR);
+			zror(ZORAN_VSTR_SNAPSHOT,ZORAN_VSTR);
+			zror(ZORAN_VDC_VIDEN,ZORAN_VDC);
+
+			/* start single-shot grab */
+			zror(ZORAN_VSTR_GRAB, ZORAN_VSTR);
+			break;
+		 default:
+			printk(CARD_INFO "what is this doing on the queue? (kindof=%d)\n",CARD,ztv->workqueue->kindof);
+			write_lock(&ztv->lock);
+			newitem = ztv->workqueue->next;
+			ztv->workqueue->next = 0;
+			ztv->workqueue = newitem;
+			write_unlock(&ztv->lock);
+			if (newitem)
+				goto again;	/* yeah, sure.. */
+		}
+		/* bye for now */
+		return;
+	}
+DEBUG(printk(CARD_DEBUG "nothing in queue\n",CARD));
+
+	/*
+	 * What? Even the workqueue is empty? Am i really here
+	 * for nothing? Did i come all that way to... do nothing?
+	 */
+
+	/* do we need to overlay? */
+	if (test_bit(STATE_OVERLAY, &ztv->state))
+	{
+		/* are we already overlaying? */
+		if (!(zrread(ZORAN_OCR) & ZORAN_OCR_OVLEN) ||
+		    !(zrread(ZORAN_VDC) & ZORAN_VDC_VIDEN))
+		{
+DEBUG(printk(CARD_DEBUG "starting overlay\n",CARD));
+
+			read_lock(&ztv->lock);
+			zoran_set_geo(ztv,&ztv->overinfo);
+			read_unlock(&ztv->lock);
+
+			zror(ZORAN_OCR_OVLEN, ZORAN_OCR);
+			zrand(~ZORAN_VSTR_SNAPSHOT,ZORAN_VSTR);
+			zror(ZORAN_VDC_VIDEN,ZORAN_VDC);
+		}
+
+		/*
+		 * leave overlaying on, but turn interrupts off.
+		 */
+		zrand(~ZORAN_ICR_EN,ZORAN_ICR);
+		return;
+	}
+
+	/* do we have any VBI idle time processing? */
+	if (test_bit(STATE_VBI, &ztv->state))
+	{
+		struct vidinfo* item;
+		struct vidinfo* lastitem;
+
+		/* protect the workqueue */
+		write_lock(&ztv->lock);
+		lastitem = ztv->workqueue;
+		if (lastitem)
+			while (lastitem->next) lastitem = lastitem->next;
+		for (item=ztv->readinfo; item!=ztv->readinfo+ZORAN_VBI_BUFFERS; item++)
+			if (item->next == 0 && item->status == FBUFFER_FREE)
+			{
+DEBUG(printk(CARD_DEBUG "%p added to queue\n",CARD,item));
+				item->status = FBUFFER_BUSY;
+				if (!lastitem)
+					ztv->workqueue = item;
+				else 
+					lastitem->next = item;
+				lastitem = item;
+			}
+		write_unlock(&ztv->lock);
+		if (ztv->workqueue)
+			goto again;	/* hey, _i_ graduated :) */
+	}
+
+	/*
+	 * Then we must be realy IDLE
+	 */
+DEBUG(printk(CARD_DEBUG "turning off\n",CARD));
+	/* nothing further to do, disable DMA and further IRQs */
+	zrand(~ZORAN_VDC_VIDEN,ZORAN_VDC);
+	zrand(~ZORAN_ICR_EN,ZORAN_ICR);
+}
+
+static
+void zoran_irq(int irq, void *dev_id, struct pt_regs * regs)
+{
+	u32 stat,estat;
+	int count = 0;
+	struct zoran *ztv = dev_id;
+
+	UNUSED(irq); UNUSED(regs);
+	for (;;) {
+		/* get/clear interrupt status bits */
+		stat=zrread(ZORAN_ISR);
+		estat=stat & zrread(ZORAN_ICR);
+		if (!estat)
+			return;
+		zrwrite(estat,ZORAN_ISR);
+		IDEBUG(printk(CARD_DEBUG "estat %08x\n",CARD,estat));
+		IDEBUG(printk(CARD_DEBUG " stat %08x\n",CARD,stat));
+
+		if (estat & ZORAN_ISR_CODE)
+		{
+			IDEBUG(printk(CARD_DEBUG "CodReplIRQ\n",CARD));
+		}
+		if (estat & ZORAN_ISR_GIRQ0)
+		{
+			IDEBUG(printk(CARD_DEBUG "GIRQ0\n",CARD));
+			if (!ztv->card->usegirq1)
+				reap_states(ztv);
+		}
+		if (estat & ZORAN_ISR_GIRQ1)
+		{
+			IDEBUG(printk(CARD_DEBUG "GIRQ1\n",CARD));
+			if (ztv->card->usegirq1)
+				reap_states(ztv);
+		}
+
+		count++;
+		if (count > 10)
+			printk(CARD_ERR "irq loop %d (%x)\n",CARD,count,estat);
+		if (count > 20)
+		{
+			zrwrite(0, ZORAN_ICR);
+			printk(CARD_ERR "IRQ lockup, cleared int mask\n",CARD);
+		}
+	}
+}
+
+static
+int zoran_muxsel(struct zoran* ztv, int channel, int norm)
+{
+	int	rv;
+
+	/* set the new video norm */
+	rv = i2c_control_device(&(ztv->i2c), I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &norm);
+	if (rv)
+		return rv;
+	ztv->norm = norm;
+
+	/* map the given channel to the cards decoder's channel */
+	channel = ztv->card->video_mux[channel] & CHANNEL_MASK;
+
+	/* set the new channel */
+	rv = i2c_control_device(&(ztv->i2c), I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &channel);
+	return rv;
+}
+
+/* Tell the interrupt handler what to to.  */
+static
+void zoran_cap(struct zoran* ztv, int on)
+{
+DEBUG(printk(CARD_DEBUG "zoran_cap(%d) state=%x\n",CARD,on,ztv->state));
+
+	if (on) {
+		ztv->running = 1;
+
+		/*
+		 * turn interrupts (back) on. The DMA will be enabled
+		 * inside the irq handler when it detects a restart.
+		 */
+		zror(ZORAN_ICR_EN,ZORAN_ICR);
+	}
+	else {
+		/*
+		 * turn both interrupts and DMA off
+		 */
+		zrand(~ZORAN_VDC_VIDEN,ZORAN_VDC);
+		zrand(~ZORAN_ICR_EN,ZORAN_ICR);
+
+		ztv->running = 0;
+	}
+}
+
+static ulong dmask[] = {
+	0xFFFFFFFF, 0xFFFFFFFE, 0xFFFFFFFC, 0xFFFFFFF8,
+	0xFFFFFFF0, 0xFFFFFFE0, 0xFFFFFFC0, 0xFFFFFF80,
+	0xFFFFFF00, 0xFFFFFE00, 0xFFFFFC00, 0xFFFFF800,
+	0xFFFFF000, 0xFFFFE000, 0xFFFFC000, 0xFFFF8000,
+	0xFFFF0000, 0xFFFE0000, 0xFFFC0000, 0xFFF80000,
+	0xFFF00000, 0xFFE00000, 0xFFC00000, 0xFF800000,
+	0xFF000000, 0xFE000000, 0xFC000000, 0xF8000000,
+	0xF0000000, 0xE0000000, 0xC0000000, 0x80000000
+};
+
+static
+void zoran_built_overlay(struct zoran* ztv, int count, struct video_clip *vcp)
+{
+	ulong*	mtop;
+	int	ystep = (ztv->vidXshift + ztv->vidWidth+31)/32;	/* next DWORD */
+	int	i;
+
+DEBUG(printk(KERN_DEBUG "       overlay at %p, ystep=%d, clips=%d\n",ztv->overinfo.overlay,ystep,count));
+
+	for (i=0; i<count; i++) {
+		struct video_clip *vp = vcp+i;
+		UNUSED(vp);
+DEBUG(printk(KERN_DEBUG "       %d: clip(%d,%d,%d,%d)\n", i,vp->x,vp->y,vp->width,vp->height));
+	}
+
+	/*
+	 * activate the visible portion of the screen
+	 * Note we take some shortcuts here, because we
+	 * know the width can never be < 32. (I.e. a DWORD)
+	 * We also assume the overlay starts somewhere in
+	 * the FIRST dword.
+	 */
+	{
+		int start = ztv->vidXshift;
+		ulong firstd = dmask[start];
+		ulong lastd = ~dmask[(start + ztv->overinfo.w) & 31];
+		mtop = ztv->overinfo.overlay;
+		for (i=0; i<ztv->overinfo.h; i++) {
+			int w = ztv->vidWidth;
+			ulong* line = mtop;
+			if (start & 31) {
+				*line++ = firstd;
+				w -= 32-(start&31);
+			}
+			memset(line, ~0, w/8);
+			if (w & 31)
+				line[w/32] = lastd;
+			mtop += ystep;
+		}
+	}
+
+	/* process clipping regions */
+	for (i=0; i<count; i++) {
+		int h;
+		if (vcp->x < 0 || (uint)vcp->x > ztv->overinfo.w ||
+		    vcp->y < 0 || vcp->y > ztv->overinfo.h ||
+		    vcp->width < 0 || (uint)(vcp->x+vcp->width) > ztv->overinfo.w ||
+		    vcp->height < 0 || (vcp->y+vcp->height) > ztv->overinfo.h)
+		{
+			DEBUG(printk(CARD_DEBUG "invalid clipzone (%d,%d,%d,%d) not in (0,0,%d,%d), adapting\n",CARD,vcp->x,vcp->y,vcp->width,vcp->height,ztv->overinfo.w,ztv->overinfo.h));
+			if (vcp->x < 0) vcp->x = 0;
+			if ((uint)vcp->x > ztv->overinfo.w) vcp->x = ztv->overinfo.w;
+			if (vcp->y < 0) vcp->y = 0;
+			if (vcp->y > ztv->overinfo.h) vcp->y = ztv->overinfo.h;
+			if (vcp->width < 0) vcp->width = 0;
+			if ((uint)(vcp->x+vcp->width) > ztv->overinfo.w) vcp->width = ztv->overinfo.w - vcp->x;
+			if (vcp->height < 0) vcp->height = 0;
+			if (vcp->y+vcp->height > ztv->overinfo.h) vcp->height = ztv->overinfo.h - vcp->y;
+//			continue;
+		}
+
+		mtop = &ztv->overinfo.overlay[vcp->y*ystep];
+		for (h=0; h<=vcp->height; h++) {
+			int w;
+			int x = ztv->vidXshift + vcp->x;
+			for (w=0; w<=vcp->width; w++) {
+				clear_bit(x&31, &mtop[x/32]);
+				x++;
+			}
+			mtop += ystep;
+		}
+		++vcp;
+	}
+
+	mtop = ztv->overinfo.overlay;
+	zrwrite(virt_to_bus(mtop), ZORAN_MTOP);
+	zrwrite(virt_to_bus(mtop+ystep), ZORAN_MBOT);
+	zraor((ztv->vidInterlace*ystep)<<0,~ZORAN_OCR_MASKSTRIDE,ZORAN_OCR);
+}
+
+struct tvnorm 
+{
+	u16 Wt, Wa, Ht, Ha, HStart, VStart;
+};
+
+static struct tvnorm tvnorms[] = {
+	/* PAL-BDGHI */
+/*	{ 864, 720, 625, 576, 131, 21 },*/
+/*00*/	{ 864, 768, 625, 576, 81, 17 },
+	/* NTSC */
+/*01*/	{ 858, 720, 525, 480, 121, 10 },
+	/* SECAM */
+/*02*/	{ 864, 720, 625, 576, 131, 21 },
+	/* BW50 */
+/*03*/	{ 864, 720, 625, 576, 131, 21 },
+	/* BW60 */
+/*04*/	{ 858, 720, 525, 480, 121, 10 }
+};
+#define TVNORMS (sizeof(tvnorms)/sizeof(tvnorm))
+
+/*
+ * Program the chip for a setup as described in the vidinfo struct.
+ *
+ * Side-effects: calculates vidXshift, vidInterlace,
+ * vidHeight, vidWidth which are used in a later stage
+ * to calculate the overlay mask
+ *
+ * This is an internal function, as such it does not check the
+ * validity of the struct members... Spectaculair crashes will
+ * follow /very/ quick when you're wrong and the chip right :)
+ */
+static
+void zoran_set_geo(struct zoran* ztv, struct vidinfo* i)
+{
+	ulong	top, bot;
+	int	stride;
+	int	winWidth, winHeight;
+	int	maxWidth, maxHeight, maxXOffset, maxYOffset;
+	long	vfec;
+
+DEBUG(printk(CARD_DEBUG "set_geo(rect=(%d,%d,%d,%d), norm=%d, format=%d, bpp=%d, bpl=%d, busadr=%lx, overlay=%p)\n",CARD,i->x,i->y,i->w,i->h,ztv->norm,i->format,i->bpp,i->bpl,i->busadr,i->overlay));
+
+	/*
+	 * make sure the DMA transfers are inhibited during our
+	 * reprogramming of the chip
+	 */
+	zrand(~ZORAN_VDC_VIDEN,ZORAN_VDC);
+
+	maxWidth = tvnorms[ztv->norm].Wa;
+	maxHeight = tvnorms[ztv->norm].Ha/2;
+	maxXOffset = tvnorms[ztv->norm].HStart;
+	maxYOffset = tvnorms[ztv->norm].VStart;
+
+	/* setup vfec register (keep ExtFl,TopField and VCLKPol settings) */
+	vfec = (zrread(ZORAN_VFEC) & (ZORAN_VFEC_EXTFL|ZORAN_VFEC_TOPFIELD|ZORAN_VFEC_VCLKPOL)) |
+	       (palette2fmt[i->format].mode & (ZORAN_VFEC_RGB|ZORAN_VFEC_ERRDIF|ZORAN_VFEC_LE|ZORAN_VFEC_PACK24));
+
+	/*
+	 * Set top, bottom ptrs. Since these must be DWORD aligned,
+	 * possible adjust the x and the width of the window.
+	 * so the endposition stay the same. The vidXshift will make
+	 * sure we are not writing pixels before the requested x.
+	 */
+	ztv->vidXshift = 0;
+	winWidth = i->w;
+	if (winWidth < 0)
+		winWidth = -winWidth;
+	top = i->busadr + i->x*i->bpp + i->y*i->bpl;
+	if (top & 3) {
+		ztv->vidXshift = (top & 3) / i->bpp;
+		winWidth += ztv->vidXshift;
+		DEBUG(printk(KERN_DEBUG "       window-x shifted %d pixels left\n",ztv->vidXshift));
+		top &= ~3;
+	}
+
+	/*
+	 * bottom points to next frame but in interleaved mode we want
+	 * to 'mix' the 2 frames to one capture, so 'bot' points to one
+	 * (physical) line below the top line.
+	 */
+	bot = top + i->bpl;
+	zrwrite(top,ZORAN_VTOP);
+	zrwrite(bot,ZORAN_VBOT);
+
+	/*
+	 * Make sure the winWidth is DWORD aligned too,
+	 * thereby automaticly making sure the stride to the
+	 * next line is DWORD aligned too (as required by spec).
+	 */
+	if ((winWidth*i->bpp) & 3) {
+DEBUG(printk(KERN_DEBUG "       window-width enlarged by %d pixels\n",(winWidth*i->bpp) & 3));
+		winWidth += (winWidth*i->bpp) & 3;
+	}
+
+	/* determine the DispMode and stride */
+	if (i->h >= 0 && i->h <= maxHeight) {
+		/* single frame grab suffices for this height. */
+		vfec |= ZORAN_VFEC_DISPMOD;
+		ztv->vidInterlace = 0;
+		stride = i->bpl - (winWidth*i->bpp);
+		winHeight = i->h;
+	}
+	else {
+		/* interleaving needed for this height */
+		ztv->vidInterlace = 1;
+		stride = i->bpl*2 - (winWidth*i->bpp);
+		winHeight = i->h/2;
+	}
+	if (winHeight < 0)	/* can happen for VBI! */
+		winHeight = -winHeight;
+
+	/* safety net, sometimes bpl is too short??? */
+	if (stride<0) {
+DEBUG(printk(CARD_DEBUG "WARNING stride = %d\n",CARD,stride));
+		stride = 0;
+	}
+
+	zraor((winHeight<<12)|(winWidth<<0),~(ZORAN_VDC_VIDWINHT|ZORAN_VDC_VIDWINWID), ZORAN_VDC);
+	zraor(stride<<16,~ZORAN_VSTR_DISPSTRIDE,ZORAN_VSTR);
+
+	/* remember vidWidth, vidHeight for overlay calculations */
+	ztv->vidWidth = winWidth;
+	ztv->vidHeight = winHeight;
+DEBUG(printk(KERN_DEBUG "       top=%08lx, bottom=%08lx\n",top,bot));
+DEBUG(printk(KERN_DEBUG "       winWidth=%d, winHeight=%d\n",winWidth,winHeight));
+DEBUG(printk(KERN_DEBUG "       maxWidth=%d, maxHeight=%d\n",maxWidth,maxHeight));
+DEBUG(printk(KERN_DEBUG "       stride=%d\n",stride));
+
+	/*
+	 * determine horizontal scales and crops
+	 */
+	if (i->w < 0) {
+		int Hstart = 1;
+		int Hend = Hstart + winWidth;
+DEBUG(printk(KERN_DEBUG "       Y: scale=0, start=%d, end=%d\n", Hstart, Hend));
+		zraor((Hstart<<10)|(Hend<<0),~(ZORAN_VFEH_HSTART|ZORAN_VFEH_HEND),ZORAN_VFEH);
+	}
+	else {
+		int Wa = maxWidth;
+		int X = (winWidth*64+Wa-1)/Wa;
+		int We = winWidth*64/X;
+		int HorDcm = 64-X;
+		int hcrop1 = 2*(Wa-We)/4;
+		/*
+		 * BUGFIX: Juha Nurmela <junki@qn-lpr2-165.quicknet.inet.fi> 
+		 * found the solution to the color phase shift.
+		 * See ChangeLog for the full explanation)
+		 */
+		int Hstart = (maxXOffset + hcrop1) | 1;
+		int Hend = Hstart + We - 1;
+
+DEBUG(printk(KERN_DEBUG "       X: scale=%d, start=%d, end=%d\n", HorDcm, Hstart, Hend));
+
+		zraor((Hstart<<10)|(Hend<<0),~(ZORAN_VFEH_HSTART|ZORAN_VFEH_HEND),ZORAN_VFEH);
+		vfec |= HorDcm<<14;
+
+		if (HorDcm<16)
+			vfec |= ZORAN_VFEC_HFILTER_1; /* no filter */
+		else if (HorDcm<32)
+			vfec |= ZORAN_VFEC_HFILTER_3; /* 3 tap filter */
+		else if (HorDcm<48)
+			vfec |= ZORAN_VFEC_HFILTER_4; /* 4 tap filter */
+		else	vfec |= ZORAN_VFEC_HFILTER_5; /* 5 tap filter */
+	}
+
+	/*
+	 * Determine vertical scales and crops
+	 *
+	 * when height is negative, we want to read starting at line 0
+	 * One day someone might need access to these lines...
+	 */
+	if (i->h < 0) {
+		int Vstart = 0;
+		int Vend = Vstart + winHeight;
+DEBUG(printk(KERN_DEBUG "       Y: scale=0, start=%d, end=%d\n", Vstart, Vend));
+		zraor((Vstart<<10)|(Vend<<0),~(ZORAN_VFEV_VSTART|ZORAN_VFEV_VEND),ZORAN_VFEV);
+	}
+	else {
+		int Ha = maxHeight;
+		int Y = (winHeight*64+Ha-1)/Ha;
+		int He = winHeight*64/Y;
+		int VerDcm = 64-Y;
+		int vcrop1 = 2*(Ha-He)/4;
+		int Vstart = maxYOffset + vcrop1;
+		int Vend = Vstart + He - 1;
+
+DEBUG(printk(KERN_DEBUG "       Y: scale=%d, start=%d, end=%d\n", VerDcm, Vstart, Vend));
+		zraor((Vstart<<10)|(Vend<<0),~(ZORAN_VFEV_VSTART|ZORAN_VFEV_VEND),ZORAN_VFEV);
+		vfec |= VerDcm<<8;
+	}
+
+DEBUG(printk(KERN_DEBUG "       F: format=%d(=%s)\n",i->format,palette2fmt[i->format].name));
+
+	/* setup the requested format */
+	zrwrite(vfec, ZORAN_VFEC);
+}
+
+static
+void zoran_common_open(struct zoran* ztv, int flags)
+{
+	UNUSED(flags);
+
+	/* already opened? */
+	if (ztv->users++ != 0)
+		return;
+
+	/* unmute audio */
+	/* /what/ audio? */
+
+	ztv->state = 0;
+
+	/* setup the encoder to the initial values */
+	ztv->picture.colour=254<<7;
+	ztv->picture.brightness=128<<8;
+	ztv->picture.hue=128<<8;
+	ztv->picture.contrast=216<<7;
+	i2c_control_device(&ztv->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_PICTURE, &ztv->picture);
+
+	/* default to the composite input since my camera is there */
+	zoran_muxsel(ztv, 0, VIDEO_MODE_PAL);
+}
+
+static
+void zoran_common_close(struct zoran* ztv)
+{
+	if (--ztv->users != 0)
+		return;
+
+	/* mute audio */
+	/* /what/ audio? */
+
+	/* stop the chip */
+	zoran_cap(ztv, 0);
+}
+
+/*
+ * Open a zoran card. Right now the flags are just a hack
+ */
+static int zoran_open(struct video_device *dev, int flags)
+{
+	struct zoran *ztv = (struct zoran*)dev;
+	struct vidinfo* item;
+	char* pos;
+
+	DEBUG(printk(CARD_DEBUG "open(dev,%d)\n",CARD,flags));
+
+	/*********************************************
+	 * We really should be doing lazy allocing...
+	 *********************************************/
+	/* allocate a frame buffer */
+	if (!ztv->fbuffer)
+		ztv->fbuffer = bmalloc(ZORAN_MAX_FBUFSIZE);
+	if (!ztv->fbuffer) {
+		/* could not get a buffer, bail out */
+		return -ENOBUFS;
+	}
+	/* at this time we _always_ have a framebuffer */
+	memset(ztv->fbuffer,0,ZORAN_MAX_FBUFSIZE);
+
+	if (!ztv->overinfo.overlay)
+		ztv->overinfo.overlay = kmalloc(1024*1024/8, GFP_KERNEL);
+	if (!ztv->overinfo.overlay) {
+		/* could not get an overlay buffer, bail out */
+		bfree(ztv->fbuffer, ZORAN_MAX_FBUFSIZE);
+		return -ENOBUFS;
+	}
+	/* at this time we _always_ have a overlay */
+
+	/* clear buffer status, and give them a DMAable address */
+	pos = ztv->fbuffer;
+	for (item=ztv->grabinfo; item!=ztv->grabinfo+ZORAN_MAX_FBUFFERS; item++)
+	{
+		item->status = FBUFFER_FREE;
+		item->memadr = pos;
+		item->busadr = virt_to_bus(pos);
+		pos += ZORAN_MAX_FBUFFER;
+	}
+
+	/* do the common part of all open's */
+	zoran_common_open(ztv, flags);
+
+	return 0;
+}
+
+static
+void zoran_close(struct video_device* dev)
+{
+	struct zoran *ztv = (struct zoran*)dev;
+
+	DEBUG(printk(CARD_DEBUG "close(dev)\n",CARD));
+
+	/* driver specific closure */
+	clear_bit(STATE_OVERLAY, &ztv->state);
+
+	zoran_common_close(ztv);
+
+        /*
+         *      This is sucky but right now I can't find a good way to
+         *      be sure its safe to free the buffer. We wait 5-6 fields
+         *      which is more than sufficient to be sure.
+         */
+        msleep(100);			/* Wait 1/10th of a second */
+
+	/* free the allocated framebuffer */
+	if (ztv->fbuffer)
+		bfree( ztv->fbuffer, ZORAN_MAX_FBUFSIZE );
+	ztv->fbuffer = 0;
+	if (ztv->overinfo.overlay)
+		kfree( ztv->overinfo.overlay );
+	ztv->overinfo.overlay = 0;
+
+}
+
+/*
+ * This read function could be used reentrant in a SMP situation.
+ *
+ * This is made possible by the spinlock which is kept till we
+ * found and marked a buffer for our own use. The lock must
+ * be released as soon as possible to prevent lock contention.
+ */
+static
+long zoran_read(struct video_device* dev, char* buf, unsigned long count, int nonblock)
+{
+	struct zoran *ztv = (struct zoran*)dev;
+	unsigned long max;
+	struct vidinfo* unused = 0;
+	struct vidinfo* done = 0;
+
+	DEBUG(printk(CARD_DEBUG "zoran_read(%p,%ld,%d)\n",CARD,buf,count,nonblock));
+
+	/* find ourself a free or completed buffer */
+	for (;;) {
+		struct vidinfo* item;
+
+		write_lock_irq(&ztv->lock);
+		for (item=ztv->grabinfo; item!=ztv->grabinfo+ZORAN_MAX_FBUFFERS; item++)
+		{
+			if (!unused && item->status == FBUFFER_FREE)
+				unused = item;
+			if (!done && item->status == FBUFFER_DONE)
+				done = item;
+		}
+		if (done || unused)
+			break;
+
+		/* no more free buffers, wait for them. */
+		write_unlock_irq(&ztv->lock);
+		if (nonblock)
+			return -EWOULDBLOCK;
+		interruptible_sleep_on(&ztv->grabq);
+		if (signal_pending(current))
+			return -EINTR;
+	}
+
+	/* Do we have 'ready' data? */
+	if (!done) {
+		/* no? than this will take a while... */
+		if (nonblock) {
+			write_unlock_irq(&ztv->lock);
+			return -EWOULDBLOCK;
+		}
+
+		/* mark the unused buffer as wanted */
+		unused->status = FBUFFER_BUSY;
+		unused->w = 320;
+		unused->h = 240;
+		unused->format = VIDEO_PALETTE_RGB24;
+		unused->bpp = palette2fmt[unused->format].bpp;
+		unused->bpl = unused->w * unused->bpp;
+		unused->next = 0;
+		{ /* add to tail of queue */
+		  struct vidinfo* oldframe = ztv->workqueue;
+		  if (!oldframe) ztv->workqueue = unused;
+		  else {
+		    while (oldframe->next) oldframe = oldframe->next;
+		    oldframe->next = unused;
+		  }
+		}
+		write_unlock_irq(&ztv->lock);
+
+		/* tell the state machine we want it filled /NOW/ */
+		zoran_cap(ztv, 1);
+
+		/* wait till this buffer gets grabbed */
+		wait_event_interruptible(ztv->grabq,
+				(unused->status != FBUFFER_BUSY));
+		/* see if a signal did it */
+		if (signal_pending(current))
+			return -EINTR;
+		done = unused;
+	}
+	else
+		write_unlock_irq(&ztv->lock);
+
+	/* Yes! we got data! */
+	max = done->bpl * done->h;
+	if (count > max)
+		count = max;
+	if (copy_to_user((void*)buf, done->memadr, count))
+		count = -EFAULT;
+
+	/* keep the engine running */
+	done->status = FBUFFER_FREE;
+//	zoran_cap(ztv,1);
+
+	/* tell listeners this buffer became free */
+	wake_up_interruptible(&ztv->grabq);
+
+	/* goodbye */
+	DEBUG(printk(CARD_DEBUG "zoran_read() returns %lu\n",CARD,count));
+	return count;
+}
+
+static
+long zoran_write(struct video_device* dev, const char* buf, unsigned long count, int nonblock)
+{
+	struct zoran *ztv = (struct zoran *)dev;
+	UNUSED(ztv); UNUSED(dev); UNUSED(buf); UNUSED(count); UNUSED(nonblock);
+	DEBUG(printk(CARD_DEBUG "zoran_write\n",CARD));
+	return -EINVAL;
+}
+
+static
+unsigned int zoran_poll(struct video_device *dev, struct file *file, poll_table *wait)
+{
+	struct zoran *ztv = (struct zoran *)dev;
+	struct vidinfo* item;
+	unsigned int mask = 0;
+
+	poll_wait(file, &ztv->grabq, wait);
+
+	for (item=ztv->grabinfo; item!=ztv->grabinfo+ZORAN_MAX_FBUFFERS; item++)
+		if (item->status == FBUFFER_DONE)
+		{
+			mask |= (POLLIN | POLLRDNORM);
+			break;
+		}
+
+	DEBUG(printk(CARD_DEBUG "zoran_poll()=%x\n",CARD,mask));
+
+	return mask;
+}
+
+/* append a new clipregion to the vector of video_clips */
+static
+void new_clip(struct video_window* vw, struct video_clip* vcp, int x, int y, int w, int h)
+{
+	vcp[vw->clipcount].x = x;
+	vcp[vw->clipcount].y = y;
+	vcp[vw->clipcount].width = w;
+	vcp[vw->clipcount].height = h;
+	vw->clipcount++;
+}
+
+static
+int zoran_ioctl(struct video_device* dev, unsigned int cmd, void *arg)
+{
+	struct zoran* ztv = (struct zoran*)dev;
+
+	switch (cmd) {
+	 case VIDIOCGCAP:
+	 {
+		struct video_capability c;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGCAP\n",CARD));
+
+		strcpy(c.name,ztv->video_dev.name);
+		c.type = VID_TYPE_CAPTURE|
+			 VID_TYPE_OVERLAY|
+			 VID_TYPE_CLIPPING|
+			 VID_TYPE_FRAMERAM|
+			 VID_TYPE_SCALES;
+		if (ztv->have_tuner)
+			c.type |= VID_TYPE_TUNER;
+		if (ztv->have_decoder) {
+			c.channels = ztv->card->video_inputs;
+			c.audios = ztv->card->audio_inputs;
+		} else
+			/* no decoder -> no channels */
+			c.channels = c.audios = 0;
+		c.maxwidth = 768;
+		c.maxheight = 576;
+		c.minwidth = 32;
+		c.minheight = 32;
+		if (copy_to_user(arg,&c,sizeof(c)))
+			return -EFAULT;
+		break;
+	 }
+
+	 case VIDIOCGCHAN:
+	 {
+		struct video_channel v;
+		int mux;
+		if (copy_from_user(&v, arg,sizeof(v)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGCHAN(%d)\n",CARD,v.channel));
+		v.flags=VIDEO_VC_AUDIO
+#ifdef VIDEO_VC_NORM
+			|VIDEO_VC_NORM
+#endif
+			;
+		v.tuners=0;
+		v.type=VIDEO_TYPE_CAMERA;
+#ifdef I_EXPECT_POSSIBLE_NORMS_IN_THE_API
+		v.norm=VIDEO_MODE_PAL|
+		       VIDEO_MODE_NTSC|
+		       VIDEO_MODE_SECAM;
+#else
+		v.norm=VIDEO_MODE_PAL;
+#endif
+		/* too many inputs? no decoder -> no channels */
+		if (!ztv->have_decoder || v.channel < 0 ||  v.channel >= ztv->card->video_inputs)
+			return -EINVAL;
+
+		/* now determine the name of the channel */
+		mux = ztv->card->video_mux[v.channel];
+		if (mux & IS_TUNER) {
+			/* lets assume only one tuner, yes? */
+			strcpy(v.name,"Television");
+			v.type = VIDEO_TYPE_TV;
+			if (ztv->have_tuner) {
+				v.flags |= VIDEO_VC_TUNER;
+				v.tuners = 1;
+			}
+		}
+		else if (mux & IS_SVHS)
+			sprintf(v.name,"S-Video-%d",v.channel);
+		else
+			sprintf(v.name,"CVBS-%d",v.channel);
+
+		if (copy_to_user(arg,&v,sizeof(v)))
+			return -EFAULT;
+		break;
+	 }
+	 case VIDIOCSCHAN:
+	 {	/* set video channel */
+		struct video_channel v;
+		if (copy_from_user(&v, arg,sizeof(v)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCSCHAN(%d,%d)\n",CARD,v.channel,v.norm));
+
+		/* too many inputs? no decoder -> no channels */
+		if (!ztv->have_decoder || v.channel >= ztv->card->video_inputs || v.channel < 0)
+			return -EINVAL;
+
+		if (v.norm != VIDEO_MODE_PAL &&
+		    v.norm != VIDEO_MODE_NTSC &&
+		    v.norm != VIDEO_MODE_SECAM &&
+		    v.norm != VIDEO_MODE_AUTO)
+			return -EOPNOTSUPP;
+
+		/* make it happen, nr1! */
+		return zoran_muxsel(ztv,v.channel,v.norm);
+	 }
+
+	 case VIDIOCGTUNER:
+	 {
+		struct video_tuner v;
+		if (copy_from_user(&v, arg,sizeof(v)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGTUNER(%d)\n",CARD,v.tuner));
+
+		/* Only no or one tuner for now */
+		if (!ztv->have_tuner || v.tuner)
+			return -EINVAL;
+
+		strcpy(v.name,"Television");
+		v.rangelow  = 0;
+		v.rangehigh = ~0;
+		v.flags     = VIDEO_TUNER_PAL|VIDEO_TUNER_NTSC|VIDEO_TUNER_SECAM;
+		v.mode      = ztv->norm;
+		v.signal    = 0xFFFF; /* unknown */
+
+		if (copy_to_user(arg,&v,sizeof(v)))
+			return -EFAULT;
+		break;
+	 }
+	 case VIDIOCSTUNER:
+	 {
+		struct video_tuner v;
+		if (copy_from_user(&v, arg, sizeof(v)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCSTUNER(%d,%d)\n",CARD,v.tuner,v.mode));
+
+		/* Only no or one tuner for now */
+		if (!ztv->have_tuner || v.tuner)
+			return -EINVAL;
+
+		/* and it only has certain valid modes */
+		if( v.mode != VIDEO_MODE_PAL &&
+		    v.mode != VIDEO_MODE_NTSC &&
+		    v.mode != VIDEO_MODE_SECAM)
+			return -EOPNOTSUPP;
+
+		/* engage! */
+		return zoran_muxsel(ztv,v.tuner,v.mode);
+	 }
+
+	 case VIDIOCGPICT:
+	 {
+		struct video_picture p = ztv->picture;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGPICT\n",CARD));
+		p.depth = ztv->depth;
+		switch (p.depth) {
+		 case  8: p.palette=VIDEO_PALETTE_YUV422;
+			  break;
+		 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;
+		break;
+	 }
+	 case VIDIOCSPICT:
+	 {
+		struct video_picture p;
+		if (copy_from_user(&p, arg,sizeof(p)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCSPICT(%d,%d,%d,%d,%d,%d,%d)\n",CARD,p.brightness,p.hue,p.colour,p.contrast,p.whiteness,p.depth,p.palette));
+
+		/* depth must match with framebuffer */
+		if (p.depth != ztv->depth)
+			return -EINVAL;
+
+		/* check if palette matches this bpp */
+		if (p.palette>NRPALETTES ||
+		    palette2fmt[p.palette].bpp != ztv->overinfo.bpp)
+			return -EINVAL;
+
+		write_lock_irq(&ztv->lock);
+		ztv->overinfo.format = p.palette;
+		ztv->picture = p;
+		write_unlock_irq(&ztv->lock);
+
+		/* tell the decoder */
+		i2c_control_device(&ztv->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_PICTURE, &p);
+		break;
+	 }
+
+	 case VIDIOCGWIN:
+	 {
+		struct video_window vw;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGWIN\n",CARD));
+		read_lock(&ztv->lock);
+		vw.x      = ztv->overinfo.x;
+		vw.y      = ztv->overinfo.y;
+		vw.width  = ztv->overinfo.w;
+		vw.height = ztv->overinfo.h;
+		vw.chromakey= 0;
+		vw.flags  = 0;
+		if (ztv->vidInterlace)
+			vw.flags|=VIDEO_WINDOW_INTERLACE;
+		read_unlock(&ztv->lock);
+		if (copy_to_user(arg,&vw,sizeof(vw)))
+			return -EFAULT;
+		break;
+	 }
+	 case VIDIOCSWIN:
+	 {
+		struct video_window vw;
+		struct video_clip *vcp;
+		int on;
+		if (copy_from_user(&vw,arg,sizeof(vw)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCSWIN(%d,%d,%d,%d,%x,%d)\n",CARD,vw.x,vw.y,vw.width,vw.height,vw.flags,vw.clipcount));
+
+		if (vw.flags)
+			return -EINVAL;
+
+		if (vw.clipcount <0 || vw.clipcount>256)
+			return -EDOM;   /* Too many! */
+
+		/*
+		 *      Do any clips.
+		 */
+		vcp = vmalloc(sizeof(struct video_clip)*(vw.clipcount+4));
+		if (vcp==NULL)
+			return -ENOMEM;
+		if (vw.clipcount && copy_from_user(vcp,vw.clips,sizeof(struct video_clip)*vw.clipcount)) {
+			vfree(vcp);
+			return -EFAULT;
+		}
+
+		on = ztv->running;
+		if (on)
+			zoran_cap(ztv, 0);
+
+		/*
+		 * strange, it seems xawtv sometimes calls us with 0
+		 * width and/or height. Ignore these values
+		 */
+		if (vw.x == 0)
+			vw.x = ztv->overinfo.x;
+		if (vw.y == 0)
+			vw.y = ztv->overinfo.y;
+
+		/* by now we are committed to the new data... */
+		write_lock_irq(&ztv->lock);
+		ztv->overinfo.x = vw.x;
+		ztv->overinfo.y = vw.y;
+		ztv->overinfo.w = vw.width;
+		ztv->overinfo.h = vw.height;
+		write_unlock_irq(&ztv->lock);
+
+		/*
+		 *      Impose display clips
+		 */
+		if (vw.x+vw.width > ztv->swidth)
+			new_clip(&vw, vcp, ztv->swidth-vw.x, 0, vw.width-1, vw.height-1);
+		if (vw.y+vw.height > ztv->sheight)
+			new_clip(&vw, vcp, 0, ztv->sheight-vw.y, vw.width-1, vw.height-1);
+
+		/* built the requested clipping zones */
+		zoran_set_geo(ztv, &ztv->overinfo);
+		zoran_built_overlay(ztv, vw.clipcount, vcp);
+		vfree(vcp);
+
+		/* if we were on, restart the video engine */
+		if (on)
+			zoran_cap(ztv, 1);
+		break;
+	 }
+
+	 case VIDIOCCAPTURE:
+	 {
+		int v;
+		if (get_user(v, (int *)arg))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCCAPTURE(%d)\n",CARD,v));
+
+		if (v==0) {
+			clear_bit(STATE_OVERLAY, &ztv->state);
+			zoran_cap(ztv, 1);
+		}
+		else {
+			/* is VIDIOCSFBUF, VIDIOCSWIN done? */
+			if (ztv->overinfo.busadr==0 || ztv->overinfo.w==0 || ztv->overinfo.h==0)
+				return -EINVAL;
+
+			set_bit(STATE_OVERLAY, &ztv->state);
+			zoran_cap(ztv, 1);
+		}
+		break;
+	 }
+
+	 case VIDIOCGFBUF:
+	 {
+		struct video_buffer v;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGFBUF\n",CARD));
+		read_lock(&ztv->lock);
+		v.base   = (void *)ztv->overinfo.busadr;
+		v.height = ztv->sheight;
+		v.width  = ztv->swidth;
+		v.depth  = ztv->depth;
+		v.bytesperline = ztv->overinfo.bpl;
+		read_unlock(&ztv->lock);
+		if(copy_to_user(arg, &v,sizeof(v)))
+			return -EFAULT;
+		break;
+	 }
+	 case VIDIOCSFBUF:
+	 {
+		struct video_buffer v;
+		if(!capable(CAP_SYS_ADMIN))
+			return -EPERM;
+		if (copy_from_user(&v, arg,sizeof(v)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCSFBUF(%p,%d,%d,%d,%d)\n",CARD,v.base, v.width,v.height,v.depth,v.bytesperline));
+
+		if (v.depth!=15 && v.depth!=16 && v.depth!=24 && v.depth!=32)
+			return -EINVAL;
+		if (v.bytesperline<1)
+			return -EINVAL;
+		if (ztv->running)
+			return -EBUSY;
+		write_lock_irq(&ztv->lock);
+		ztv->overinfo.busadr  = (ulong)v.base;
+		ztv->sheight      = v.height;
+		ztv->swidth       = v.width;
+		ztv->depth        = v.depth;		/* bits per pixel */
+		ztv->overinfo.bpp = ((v.depth+1)&0x38)/8;/* bytes per pixel */
+		ztv->overinfo.bpl = v.bytesperline;	/* bytes per line */
+		write_unlock_irq(&ztv->lock);
+		break;
+	 }
+
+	 case VIDIOCKEY:
+	 {
+		/* Will be handled higher up .. */
+		break;
+	 }
+
+	 case VIDIOCSYNC:
+	 {
+		int i;
+		if (get_user(i, (int *) arg))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDEOCSYNC(%d)\n",CARD,i));
+		if (i<0 || i>ZORAN_MAX_FBUFFERS)
+			return -EINVAL;
+		switch (ztv->grabinfo[i].status) {
+		 case FBUFFER_FREE:
+			return -EINVAL;
+		 case FBUFFER_BUSY:
+			/* wait till this buffer gets grabbed */
+			wait_event_interruptible(ztv->grabq,
+					(ztv->grabinfo[i].status != FBUFFER_BUSY));
+			/* see if a signal did it */
+			if (signal_pending(current))
+				return -EINTR;
+			/* don't fall through; a DONE buffer is not UNUSED */
+			break;
+		 case FBUFFER_DONE:
+			ztv->grabinfo[i].status = FBUFFER_FREE;
+			/* tell ppl we have a spare buffer */
+			wake_up_interruptible(&ztv->grabq);
+			break;
+		}
+		DEBUG(printk(CARD_DEBUG "VIDEOCSYNC(%d) returns\n",CARD,i));
+		break;
+	 }
+
+	 case VIDIOCMCAPTURE:
+	 {
+		struct video_mmap vm;
+		struct vidinfo* frame;
+		if (copy_from_user(&vm,arg,sizeof(vm)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCMCAPTURE(%d,(%d,%d),%d)\n",CARD,vm.frame,vm.width,vm.height,vm.format));
+		if (vm.frame<0 || vm.frame>ZORAN_MAX_FBUFFERS ||
+		    vm.width<32 || vm.width>768 ||
+		    vm.height<32 || vm.height>576 ||
+		    vm.format>NRPALETTES ||
+		    palette2fmt[vm.format].mode == 0)
+			return -EINVAL;
+
+		/* we are allowed to take over UNUSED and DONE buffers */
+		frame = &ztv->grabinfo[vm.frame];
+		if (frame->status == FBUFFER_BUSY)
+			return -EBUSY;
+
+		/* setup the other parameters if they are given */
+		write_lock_irq(&ztv->lock);
+		frame->w = vm.width;
+		frame->h = vm.height;
+		frame->format = vm.format;
+		frame->bpp = palette2fmt[frame->format].bpp;
+		frame->bpl = frame->w*frame->bpp;
+		frame->status = FBUFFER_BUSY;
+		frame->next = 0;
+		{ /* add to tail of queue */
+		  struct vidinfo* oldframe = ztv->workqueue;
+		  if (!oldframe) ztv->workqueue = frame;
+		  else {
+		    while (oldframe->next) oldframe = oldframe->next;
+		    oldframe->next = frame;
+		  }
+		}
+		write_unlock_irq(&ztv->lock);
+		zoran_cap(ztv, 1);
+		break;
+	 }
+
+	 case VIDIOCGMBUF:
+	 {
+		struct video_mbuf mb;
+		int i;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGMBUF\n",CARD));
+		mb.size = ZORAN_MAX_FBUFSIZE;
+		mb.frames = ZORAN_MAX_FBUFFERS;
+		for (i=0; i<ZORAN_MAX_FBUFFERS; i++)
+			mb.offsets[i] = i*ZORAN_MAX_FBUFFER;
+		if(copy_to_user(arg, &mb,sizeof(mb)))
+			return -EFAULT;
+		break;
+	 }
+
+	 case VIDIOCGUNIT:
+	 {
+		struct video_unit vu;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGUNIT\n",CARD));
+		vu.video = ztv->video_dev.minor;
+		vu.vbi = ztv->vbi_dev.minor;
+		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;
+		break;
+	 }
+
+	 case VIDIOCGFREQ:
+	 {
+		unsigned long v = ztv->tuner_freq;
+		if (copy_to_user(arg,&v,sizeof(v)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGFREQ\n",CARD));
+		break;
+	 }
+	 case VIDIOCSFREQ:
+	 {
+		unsigned long v;
+		if (copy_from_user(&v, arg, sizeof(v)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCSFREQ\n",CARD));
+
+		if (ztv->have_tuner) {
+			int fixme = v;
+			if (i2c_control_device(&(ztv->i2c), I2C_DRIVERID_TUNER, TUNER_SET_TVFREQ, &fixme) < 0)
+				return -EAGAIN;
+		}
+		ztv->tuner_freq = v;
+		break;
+	 }
+
+	 /* Why isn't this in the API?
+	  * And why doesn't it take a buffer number?
+	 case BTTV_FIELDNR: 
+	 {
+		unsigned long v = ztv->lastfieldnr;
+		if (copy_to_user(arg,&v,sizeof(v)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "BTTV_FIELDNR\n",CARD));
+		break;
+	 }
+	 */
+
+	 default:
+		return -ENOIOCTLCMD;
+	}
+	return 0;
+}
+
+static
+int zoran_mmap(struct vm_area_struct *vma, struct video_device* dev, const char* adr, unsigned long size)
+{
+	struct zoran* ztv = (struct zoran*)dev;
+	unsigned long start = (unsigned long)adr;
+	unsigned long pos;
+
+	DEBUG(printk(CARD_DEBUG "zoran_mmap(0x%p,%ld)\n",CARD,adr,size));
+
+	/* sanity checks */
+	if (size > ZORAN_MAX_FBUFSIZE || !ztv->fbuffer)
+		return -EINVAL;
+
+	/* start mapping the whole shabang to user memory */
+	pos = (unsigned long)ztv->fbuffer;
+	while (size>0) {
+		unsigned long pfn = virt_to_phys((void*)pos) >> PAGE_SHIFT;
+		if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
+			return -EAGAIN;
+		start += PAGE_SIZE;
+		pos += PAGE_SIZE;
+		size -= PAGE_SIZE;
+	}
+	return 0;
+}
+
+static struct video_device zr36120_template=
+{
+	.owner		= THIS_MODULE,
+	.name		= "UNSET",
+	.type		= VID_TYPE_TUNER|VID_TYPE_CAPTURE|VID_TYPE_OVERLAY,
+	.hardware	= VID_HARDWARE_ZR36120,
+	.open		= zoran_open,
+	.close		= zoran_close,
+	.read		= zoran_read,
+	.write		= zoran_write,
+	.poll		= zoran_poll,
+	.ioctl		= zoran_ioctl,
+	.mmap		= zoran_mmap,
+	.minor		= -1,
+};
+
+static
+int vbi_open(struct video_device *dev, int flags)
+{
+	struct zoran *ztv = dev->priv;
+	struct vidinfo* item;
+
+	DEBUG(printk(CARD_DEBUG "vbi_open(dev,%d)\n",CARD,flags));
+
+	/*
+	 * During VBI device open, we continiously grab VBI-like
+	 * data in the vbi buffer when we have nothing to do.
+	 * Only when there is an explicit request for VBI data
+	 * (read call) we /force/ a read.
+	 */
+
+	/* allocate buffers */
+	for (item=ztv->readinfo; item!=ztv->readinfo+ZORAN_VBI_BUFFERS; item++)
+	{
+		item->status = FBUFFER_FREE;
+
+		/* alloc */
+		if (!item->memadr) {
+			item->memadr = bmalloc(ZORAN_VBI_BUFSIZE);
+			if (!item->memadr) {
+				/* could not get a buffer, bail out */
+				while (item != ztv->readinfo) {
+					item--;
+					bfree(item->memadr, ZORAN_VBI_BUFSIZE);
+					item->memadr = 0;
+					item->busadr = 0;
+				}
+				return -ENOBUFS;
+			}
+		}
+
+		/* determine the DMAable address */
+		item->busadr = virt_to_bus(item->memadr);
+	}
+
+	/* do the common part of all open's */
+	zoran_common_open(ztv, flags);
+
+	set_bit(STATE_VBI, &ztv->state);
+	/* start read-ahead */
+	zoran_cap(ztv, 1);
+
+	return 0;
+}
+
+static
+void vbi_close(struct video_device *dev)
+{
+	struct zoran *ztv = dev->priv;
+	struct vidinfo* item;
+
+	DEBUG(printk(CARD_DEBUG "vbi_close(dev)\n",CARD));
+
+	/* driver specific closure */
+	clear_bit(STATE_VBI, &ztv->state);
+
+	zoran_common_close(ztv);
+
+        /*
+         *      This is sucky but right now I can't find a good way to
+         *      be sure its safe to free the buffer. We wait 5-6 fields
+         *      which is more than sufficient to be sure.
+         */
+        msleep(100);			/* Wait 1/10th of a second */
+
+	for (item=ztv->readinfo; item!=ztv->readinfo+ZORAN_VBI_BUFFERS; item++)
+	{
+		if (item->memadr)
+			bfree(item->memadr, ZORAN_VBI_BUFSIZE);
+		item->memadr = 0;
+	}
+
+}
+
+/*
+ * This read function could be used reentrant in a SMP situation.
+ *
+ * This is made possible by the spinlock which is kept till we
+ * found and marked a buffer for our own use. The lock must
+ * be released as soon as possible to prevent lock contention.
+ */
+static
+long vbi_read(struct video_device* dev, char* buf, unsigned long count, int nonblock)
+{
+	struct zoran *ztv = dev->priv;
+	unsigned long max;
+	struct vidinfo* unused = 0;
+	struct vidinfo* done = 0;
+
+	DEBUG(printk(CARD_DEBUG "vbi_read(0x%p,%ld,%d)\n",CARD,buf,count,nonblock));
+
+	/* find ourself a free or completed buffer */
+	for (;;) {
+		struct vidinfo* item;
+
+		write_lock_irq(&ztv->lock);
+		for (item=ztv->readinfo; item!=ztv->readinfo+ZORAN_VBI_BUFFERS; item++) {
+			if (!unused && item->status == FBUFFER_FREE)
+				unused = item;
+			if (!done && item->status == FBUFFER_DONE)
+				done = item;
+		}
+		if (done || unused)
+			break;
+
+		/* no more free buffers, wait for them. */
+		write_unlock_irq(&ztv->lock);
+		if (nonblock)
+			return -EWOULDBLOCK;
+		interruptible_sleep_on(&ztv->vbiq);
+		if (signal_pending(current))
+			return -EINTR;
+	}
+
+	/* Do we have 'ready' data? */
+	if (!done) {
+		/* no? than this will take a while... */
+		if (nonblock) {
+			write_unlock_irq(&ztv->lock);
+			return -EWOULDBLOCK;
+		}
+		
+		/* mark the unused buffer as wanted */
+		unused->status = FBUFFER_BUSY;
+		unused->next = 0;
+		{ /* add to tail of queue */
+		  struct vidinfo* oldframe = ztv->workqueue;
+		  if (!oldframe) ztv->workqueue = unused;
+		  else {
+		    while (oldframe->next) oldframe = oldframe->next;
+		    oldframe->next = unused;
+		  }
+		}
+		write_unlock_irq(&ztv->lock);
+
+		/* tell the state machine we want it filled /NOW/ */
+		zoran_cap(ztv, 1);
+
+		/* wait till this buffer gets grabbed */
+		wait_event_interruptible(ztv->vbiq,
+				(unused->status != FBUFFER_BUSY));
+		/* see if a signal did it */
+		if (signal_pending(current))
+			return -EINTR;
+		done = unused;
+	}
+	else
+		write_unlock_irq(&ztv->lock);
+
+	/* Yes! we got data! */
+	max = done->bpl * -done->h;
+	if (count > max)
+		count = max;
+
+	/* check if the user gave us enough room to write the data */
+	if (!access_ok(VERIFY_WRITE, buf, count)) {
+		count = -EFAULT;
+		goto out;
+	}
+
+	/*
+	 * Now transform/strip the data from YUV to Y-only
+	 * NB. Assume the Y is in the LSB of the YUV data.
+	 */
+	{
+	unsigned char* optr = buf;
+	unsigned char* eptr = buf+count;
+
+	/* are we beeing accessed from an old driver? */
+	if (count == 2*19*2048) {
+		/*
+		 * Extreme HACK, old VBI programs expect 2048 points
+		 * of data, and we only got 864 orso. Double each 
+		 * datapoint and clear the rest of the line.
+		 * This way we have appear to have a
+		 * sample_frequency of 29.5 Mc.
+		 */
+		int x,y;
+		unsigned char* iptr = done->memadr+1;
+		for (y=done->h; optr<eptr && y<0; y++)
+		{
+			/* copy to doubled data to userland */
+			for (x=0; optr+1<eptr && x<-done->w; x++)
+			{
+				unsigned char a = iptr[x*2];
+				__put_user(a, optr++);
+				__put_user(a, optr++);
+			}
+			/* and clear the rest of the line */
+			for (x*=2; optr<eptr && x<done->bpl; x++)
+				__put_user(0, optr++);
+			/* next line */
+			iptr += done->bpl;
+		}
+	}
+	else {
+		/*
+		 * Other (probably newer) programs asked
+		 * us what geometry we are using, and are
+		 * reading the correct size.
+		 */
+		int x,y;
+		unsigned char* iptr = done->memadr+1;
+		for (y=done->h; optr<eptr && y<0; y++)
+		{
+			/* copy to doubled data to userland */
+			for (x=0; optr<eptr && x<-done->w; x++)
+				__put_user(iptr[x*2], optr++);
+			/* and clear the rest of the line */
+			for (;optr<eptr && x<done->bpl; x++)
+				__put_user(0, optr++);
+			/* next line */
+			iptr += done->bpl;
+		}
+	}
+
+	/* API compliance:
+	 * place the framenumber (half fieldnr) in the last long
+	 */
+	__put_user(done->fieldnr/2, ((ulong*)eptr)[-1]);
+	}
+
+	/* keep the engine running */
+	done->status = FBUFFER_FREE;
+	zoran_cap(ztv, 1);
+
+	/* tell listeners this buffer just became free */
+	wake_up_interruptible(&ztv->vbiq);
+
+	/* goodbye */
+out:
+	DEBUG(printk(CARD_DEBUG "vbi_read() returns %lu\n",CARD,count));
+	return count;
+}
+
+static
+unsigned int vbi_poll(struct video_device *dev, struct file *file, poll_table *wait)
+{
+	struct zoran *ztv = dev->priv;
+	struct vidinfo* item;
+	unsigned int mask = 0;
+
+	poll_wait(file, &ztv->vbiq, wait);
+
+	for (item=ztv->readinfo; item!=ztv->readinfo+ZORAN_VBI_BUFFERS; item++)
+		if (item->status == FBUFFER_DONE)
+		{
+			mask |= (POLLIN | POLLRDNORM);
+			break;
+		}
+
+	DEBUG(printk(CARD_DEBUG "vbi_poll()=%x\n",CARD,mask));
+
+	return mask;
+}
+
+static
+int vbi_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
+{
+	struct zoran* ztv = dev->priv;
+
+	switch (cmd) {
+	 case VIDIOCGVBIFMT:
+	 {
+		struct vbi_format f;
+		DEBUG(printk(CARD_DEBUG "VIDIOCGVBIINFO\n",CARD));
+		f.sampling_rate = 14750000UL;
+		f.samples_per_line = -ztv->readinfo[0].w;
+		f.sample_format = VIDEO_PALETTE_RAW;
+		f.start[0] = f.start[1] = ztv->readinfo[0].y;
+		f.start[1] += 312;
+		f.count[0] = f.count[1] = -ztv->readinfo[0].h;
+		f.flags = VBI_INTERLACED;
+		if (copy_to_user(arg,&f,sizeof(f)))
+			return -EFAULT;
+		break;
+	 }
+	 case VIDIOCSVBIFMT:
+	 {
+		struct vbi_format f;
+		int i;
+		if (copy_from_user(&f, arg,sizeof(f)))
+			return -EFAULT;
+		DEBUG(printk(CARD_DEBUG "VIDIOCSVBIINFO(%d,%d,%d,%d,%d,%d,%d,%x)\n",CARD,f.sampling_rate,f.samples_per_line,f.sample_format,f.start[0],f.start[1],f.count[0],f.count[1],f.flags));
+
+		/* lots of parameters are fixed... (PAL) */
+		if (f.sampling_rate != 14750000UL ||
+		    f.samples_per_line > 864 ||
+		    f.sample_format != VIDEO_PALETTE_RAW ||
+		    f.start[0] < 0 ||
+		    f.start[0] != f.start[1]-312 ||
+		    f.count[0] != f.count[1] ||
+		    f.start[0]+f.count[0] >= 288 ||
+		    f.flags != VBI_INTERLACED)
+			return -EINVAL;
+
+		write_lock_irq(&ztv->lock);
+		ztv->readinfo[0].y = f.start[0];
+		ztv->readinfo[0].w = -f.samples_per_line;
+		ztv->readinfo[0].h = -f.count[0];
+		ztv->readinfo[0].bpl = f.samples_per_line*ztv->readinfo[0].bpp;
+		for (i=1; i<ZORAN_VBI_BUFFERS; i++)
+			ztv->readinfo[i] = ztv->readinfo[i];
+		write_unlock_irq(&ztv->lock);
+		break;
+	 }
+	 default:
+		return -ENOIOCTLCMD;
+	}
+	return 0;
+}
+
+static struct video_device vbi_template=
+{
+	.owner		= THIS_MODULE,
+	.name		= "UNSET",
+	.type		= VID_TYPE_CAPTURE|VID_TYPE_TELETEXT,
+	.hardware	= VID_HARDWARE_ZR36120,
+	.open		= vbi_open,
+	.close		= vbi_close,
+	.read		= vbi_read,
+	.write		= zoran_write,
+	.poll		= vbi_poll,
+	.ioctl		= vbi_ioctl,
+	.minor		= -1,
+};
+
+/*
+ *      Scan for a Zoran chip, request the irq and map the io memory
+ */
+static
+int __init find_zoran(void)
+{
+	int result;
+	struct zoran *ztv;
+	struct pci_dev *dev = NULL;
+	unsigned char revision;
+	int zoran_num=0;
+
+	while ((dev = pci_find_device(PCI_VENDOR_ID_ZORAN,PCI_DEVICE_ID_ZORAN_36120, dev)))
+	{
+		/* Ok, a ZR36120/ZR36125 found! */
+		ztv = &zorans[zoran_num];
+		ztv->dev = dev;
+
+		if (pci_enable_device(dev))
+			return -EIO;
+
+		pci_read_config_byte(dev, PCI_CLASS_REVISION, &revision);
+		printk(KERN_INFO "zoran: Zoran %x (rev %d) ",
+			dev->device, revision);
+		printk("bus: %d, devfn: %d, irq: %d, ",
+			dev->bus->number, dev->devfn, dev->irq);
+		printk("memory: 0x%08lx.\n", ztv->zoran_adr);
+
+		ztv->zoran_mem = ioremap(ztv->zoran_adr, 0x1000);
+		DEBUG(printk(KERN_DEBUG "zoran: mapped-memory at 0x%p\n",ztv->zoran_mem));
+
+		result = request_irq(dev->irq, zoran_irq,
+			SA_SHIRQ|SA_INTERRUPT,"zoran", ztv);
+		if (result==-EINVAL)
+		{
+			iounmap(ztv->zoran_mem);
+			printk(KERN_ERR "zoran: Bad irq number or handler\n");
+			return -EINVAL;
+		}
+		if (result==-EBUSY)
+			printk(KERN_ERR "zoran: IRQ %d busy, change your PnP config in BIOS\n",dev->irq);
+		if (result < 0) {
+			iounmap(ztv->zoran_mem);
+			return result;
+		}
+		/* Enable bus-mastering */
+		pci_set_master(dev);
+
+		zoran_num++;
+	}
+	if(zoran_num)
+		printk(KERN_INFO "zoran: %d Zoran card(s) found.\n",zoran_num);
+	return zoran_num;
+}
+
+static
+int __init init_zoran(int card)
+{
+	struct zoran *ztv = &zorans[card];
+	int	i;
+
+	/* if the given cardtype valid? */
+	if (cardtype[card]>=NRTVCARDS) {
+		printk(KERN_INFO "invalid cardtype(%d) detected\n",cardtype[card]);
+		return -1;
+	}
+
+	/* reset the zoran */
+	zrand(~ZORAN_PCI_SOFTRESET,ZORAN_PCI);
+	udelay(10);
+	zror(ZORAN_PCI_SOFTRESET,ZORAN_PCI);
+	udelay(10);
+
+	/* zoran chip specific details */
+	ztv->card = tvcards+cardtype[card];	/* point to the selected card */
+	ztv->norm = 0;				/* PAL */
+	ztv->tuner_freq = 0;
+
+	/* videocard details */
+	ztv->swidth = 800;
+	ztv->sheight = 600;
+	ztv->depth = 16;
+
+	/* State details */
+	ztv->fbuffer = 0;
+	ztv->overinfo.kindof = FBUFFER_OVERLAY;
+	ztv->overinfo.status = FBUFFER_FREE;
+	ztv->overinfo.x = 0;
+	ztv->overinfo.y = 0;
+	ztv->overinfo.w = 768; /* 640 */
+	ztv->overinfo.h = 576; /* 480 */
+	ztv->overinfo.format = VIDEO_PALETTE_RGB565;
+	ztv->overinfo.bpp = palette2fmt[ztv->overinfo.format].bpp;
+	ztv->overinfo.bpl = ztv->overinfo.bpp*ztv->swidth;
+	ztv->overinfo.busadr = 0;
+	ztv->overinfo.memadr = 0;
+	ztv->overinfo.overlay = 0;
+	for (i=0; i<ZORAN_MAX_FBUFFERS; i++) {
+		ztv->grabinfo[i] = ztv->overinfo;
+		ztv->grabinfo[i].kindof = FBUFFER_GRAB;
+	}
+	init_waitqueue_head(&ztv->grabq);
+
+	/* VBI details */
+	ztv->readinfo[0] = ztv->overinfo;
+	ztv->readinfo[0].kindof = FBUFFER_VBI;
+	ztv->readinfo[0].w = -864;
+	ztv->readinfo[0].h = -38;
+	ztv->readinfo[0].format = VIDEO_PALETTE_YUV422;
+	ztv->readinfo[0].bpp = palette2fmt[ztv->readinfo[0].format].bpp;
+	ztv->readinfo[0].bpl = 1024*ztv->readinfo[0].bpp;
+	for (i=1; i<ZORAN_VBI_BUFFERS; i++)
+		ztv->readinfo[i] = ztv->readinfo[0];
+	init_waitqueue_head(&ztv->vbiq);
+
+	/* maintenance data */
+	ztv->have_decoder = 0;
+	ztv->have_tuner = 0;
+	ztv->tuner_type = 0;
+	ztv->running = 0;
+	ztv->users = 0;
+	rwlock_init(&ztv->lock);
+	ztv->workqueue = 0;
+	ztv->fieldnr = 0;
+	ztv->lastfieldnr = 0;
+
+	if (triton1)
+		zrand(~ZORAN_VDC_TRICOM, ZORAN_VDC);
+
+	/* external FL determines TOP frame */
+	zror(ZORAN_VFEC_EXTFL, ZORAN_VFEC); 
+
+	/* set HSpol */
+	if (ztv->card->hsync_pos)
+		zrwrite(ZORAN_VFEH_HSPOL, ZORAN_VFEH);
+	/* set VSpol */
+	if (ztv->card->vsync_pos)
+		zrwrite(ZORAN_VFEV_VSPOL, ZORAN_VFEV);
+
+	/* Set the proper General Purpuse register bits */
+	/* implicit: no softreset, 0 waitstates */
+	zrwrite(ZORAN_PCI_SOFTRESET|(ztv->card->gpdir<<0),ZORAN_PCI);
+	/* implicit: 3 duration and recovery PCI clocks on guest 0-3 */
+	zrwrite(ztv->card->gpval<<24,ZORAN_GUEST);
+
+	/* clear interrupt status */
+	zrwrite(~0, ZORAN_ISR);
+
+	/*
+	 * i2c template
+	 */
+	ztv->i2c = zoran_i2c_bus_template;
+	sprintf(ztv->i2c.name,"zoran-%d",card);
+	ztv->i2c.data = ztv;
+
+	/*
+	 * Now add the template and register the device unit
+	 */
+	ztv->video_dev = zr36120_template;
+	strcpy(ztv->video_dev.name, ztv->i2c.name);
+	ztv->video_dev.priv = ztv;
+	if (video_register_device(&ztv->video_dev, VFL_TYPE_GRABBER, video_nr) < 0)
+		return -1;
+
+	ztv->vbi_dev = vbi_template;
+	strcpy(ztv->vbi_dev.name, ztv->i2c.name);
+	ztv->vbi_dev.priv = ztv;
+	if (video_register_device(&ztv->vbi_dev, VFL_TYPE_VBI, vbi_nr) < 0) {
+		video_unregister_device(&ztv->video_dev);
+		return -1;
+	}
+	i2c_register_bus(&ztv->i2c);
+
+	/* set interrupt mask - the PIN enable will be set later */
+	zrwrite(ZORAN_ICR_GIRQ0|ZORAN_ICR_GIRQ1|ZORAN_ICR_CODE, ZORAN_ICR);
+
+	printk(KERN_INFO "%s: installed %s\n",ztv->i2c.name,ztv->card->name);
+	return 0;
+}
+
+static
+void release_zoran(int max)
+{
+	struct zoran *ztv;
+	int i;
+
+	for (i=0;i<max; i++) 
+	{
+		ztv = &zorans[i];
+
+		/* turn off all capturing, DMA and IRQs */
+		/* reset the zoran */
+		zrand(~ZORAN_PCI_SOFTRESET,ZORAN_PCI);
+		udelay(10);
+		zror(ZORAN_PCI_SOFTRESET,ZORAN_PCI);
+		udelay(10);
+
+		/* first disable interrupts before unmapping the memory! */
+		zrwrite(0, ZORAN_ICR);
+		zrwrite(0xffffffffUL,ZORAN_ISR);
+
+		/* free it */
+		free_irq(ztv->dev->irq,ztv);
+ 
+    		/* unregister i2c_bus */
+		i2c_unregister_bus((&ztv->i2c));
+
+		/* unmap and free memory */
+		if (ztv->zoran_mem)
+			iounmap(ztv->zoran_mem);
+
+		video_unregister_device(&ztv->video_dev);
+		video_unregister_device(&ztv->vbi_dev);
+	}
+}
+
+void __exit zr36120_exit(void)
+{
+	release_zoran(zoran_cards);
+}
+
+int __init zr36120_init(void)
+{
+	int	card;
+ 
+	handle_chipset();
+	zoran_cards = find_zoran();
+	if (zoran_cards<0)
+		/* no cards found, no need for a driver */
+		return -EIO;
+
+	/* initialize Zorans */
+	for (card=0; card<zoran_cards; card++) {
+		if (init_zoran(card)<0) {
+			/* only release the zorans we have registered */
+			release_zoran(card);
+			return -EIO;
+		} 
+	}
+	return 0;
+}
+
+module_init(zr36120_init);
+module_exit(zr36120_exit);