diff options
Diffstat (limited to 'drivers/media/video/zr36120.c')
| -rw-r--r-- | drivers/media/video/zr36120.c | 2073 |
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); |