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linux/drivers/media/video/zr36120.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

2074 lines
54 KiB
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/*
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);
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