capctl  = 0;	capctl |= (btv->cap_ctl & 0x03) ? 0x03 : 0x00;  /* capture  */	capctl |= (btv->cap_ctl & 0x0c) ? 0x0c : 0x00;  /* vbi data */	capctl |= override;	d2printk(KERN_DEBUG		 "bttv%d: capctl=%x lirq=%d top=%08Lx/%08Lx even=%08Lx/%08Lx\n",		 btv->c.nr,capctl,btv->loop_irq,		 btv->cvbi         ? (unsigned long long)btv->cvbi->top.dma            : 0,		 btv->curr.top     ? (unsigned long long)btv->curr.top->top.dma        : 0,		 btv->cvbi         ? (unsigned long long)btv->cvbi->bottom.dma         : 0,		 btv->curr.bottom  ? (unsigned long long)btv->curr.bottom->bottom.dma  : 0);	cmd = BT848_RISC_JUMP;	if (btv->loop_irq) {		cmd |= BT848_RISC_IRQ;		cmd |= (btv->loop_irq  & 0x0f) << 16;		cmd |= (~btv->loop_irq & 0x0f) << 20;	}	if (btv->curr.frame_irq || btv->loop_irq || btv->cvbi) {		mod_timer(&btv->timeout, jiffies+BTTV_TIMEOUT);	} else {		del_timer(&btv->timeout);	}	btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd);	btaor(capctl, ~0x0f, BT848_CAP_CTL);	if (capctl) {		if (btv->dma_on)			return;		btwrite(btv->main.dma, BT848_RISC_STRT_ADD);		btor(3, BT848_GPIO_DMA_CTL);		btv->dma_on = 1;	} else {		if (!btv->dma_on)			return;		btand(~3, BT848_GPIO_DMA_CTL);		btv->dma_on = 0;	}	return;}intbttv_risc_init_main(struct bttv *btv){	int rc;	if ((rc = btcx_riscmem_alloc(btv->c.pci,&btv->main,PAGE_SIZE)) < 0)		return rc;	dprintk(KERN_DEBUG "bttv%d: risc main @ %08Lx\n",		btv->c.nr,(unsigned long long)btv->main.dma);	btv->main.cpu[0] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC |				       BT848_FIFO_STATUS_VRE);	btv->main.cpu[1] = cpu_to_le32(0);	btv->main.cpu[2] = cpu_to_le32(BT848_RISC_JUMP);	btv->main.cpu[3] = cpu_to_le32(btv->main.dma + (4<<2));	/* top field */	btv->main.cpu[4] = cpu_to_le32(BT848_RISC_JUMP);	btv->main.cpu[5] = cpu_to_le32(btv->main.dma + (6<<2));	btv->main.cpu[6] = cpu_to_le32(BT848_RISC_JUMP);	btv->main.cpu[7] = cpu_to_le32(btv->main.dma + (8<<2));	btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC |				       BT848_FIFO_STATUS_VRO);	btv->main.cpu[9] = cpu_to_le32(0);	/* bottom field */	btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP);	btv->main.cpu[11] = cpu_to_le32(btv->main.dma + (12<<2));	btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP);	btv->main.cpu[13] = cpu_to_le32(btv->main.dma + (14<<2));	/* jump back to top field */	btv->main.cpu[14] = cpu_to_le32(BT848_RISC_JUMP);	btv->main.cpu[15] = cpu_to_le32(btv->main.dma + (0<<2));	return 0;}intbttv_risc_hook(struct bttv *btv, int slot, struct btcx_riscmem *risc,	       int irqflags){	unsigned long cmd;	unsigned long next = btv->main.dma + ((slot+2) << 2);	if (NULL == risc) {		d2printk(KERN_DEBUG "bttv%d: risc=%p slot[%d]=NULL\n",			 btv->c.nr,risc,slot);		btv->main.cpu[slot+1] = cpu_to_le32(next);	} else {		d2printk(KERN_DEBUG "bttv%d: risc=%p slot[%d]=%08Lx irq=%d\n",			 btv->c.nr,risc,slot,(unsigned long long)risc->dma,irqflags);		cmd = BT848_RISC_JUMP;		if (irqflags) {			cmd |= BT848_RISC_IRQ;			cmd |= (irqflags  & 0x0f) << 16;			cmd |= (~irqflags & 0x0f) << 20;		}		risc->jmp[0] = cpu_to_le32(cmd);		risc->jmp[1] = cpu_to_le32(next);		btv->main.cpu[slot+1] = cpu_to_le32(risc->dma);	}	return 0;}voidbttv_dma_free(struct bttv *btv, struct bttv_buffer *buf){	if (in_interrupt())		BUG();	videobuf_waiton(&buf->vb,0,0);	videobuf_dma_pci_unmap(btv->c.pci, &buf->vb.dma);	videobuf_dma_free(&buf->vb.dma);	btcx_riscmem_free(btv->c.pci,&buf->bottom);	btcx_riscmem_free(btv->c.pci,&buf->top);	buf->vb.state = STATE_NEEDS_INIT;}intbttv_buffer_activate_vbi(struct bttv *btv,			 struct bttv_buffer *vbi){	/* vbi capture */	if (vbi) {		vbi->vb.state = STATE_ACTIVE;		list_del(&vbi->vb.queue);		bttv_risc_hook(btv, RISC_SLOT_O_VBI, &vbi->top,    0);		bttv_risc_hook(btv, RISC_SLOT_E_VBI, &vbi->bottom, 4);	} else {		bttv_risc_hook(btv, RISC_SLOT_O_VBI, NULL, 0);		bttv_risc_hook(btv, RISC_SLOT_E_VBI, NULL, 0);	}	return 0;}intbttv_buffer_activate_video(struct bttv *btv,			   struct bttv_buffer_set *set){	/* video capture */	if (NULL != set->top  &&  NULL != set->bottom) {		if (set->top == set->bottom) {			set->top->vb.state    = STATE_ACTIVE;			if (set->top->vb.queue.next)				list_del(&set->top->vb.queue);		} else {			set->top->vb.state    = STATE_ACTIVE;			set->bottom->vb.state = STATE_ACTIVE;			if (set->top->vb.queue.next)				list_del(&set->top->vb.queue);			if (set->bottom->vb.queue.next)				list_del(&set->bottom->vb.queue);		}		bttv_apply_geo(btv, &set->top->geo, 1);		bttv_apply_geo(btv, &set->bottom->geo,0);		bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top,			       set->top_irq);		bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom,			       set->frame_irq);		btaor((set->top->btformat & 0xf0) | (set->bottom->btformat & 0x0f),		      ~0xff, BT848_COLOR_FMT);		btaor((set->top->btswap & 0x0a) | (set->bottom->btswap & 0x05),		      ~0x0f, BT848_COLOR_CTL);	} else if (NULL != set->top) {		set->top->vb.state  = STATE_ACTIVE;		if (set->top->vb.queue.next)			list_del(&set->top->vb.queue);		bttv_apply_geo(btv, &set->top->geo,1);		bttv_apply_geo(btv, &set->top->geo,0);		bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top,			       set->frame_irq);		bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL,           0);		btaor(set->top->btformat & 0xff, ~0xff, BT848_COLOR_FMT);		btaor(set->top->btswap & 0x0f,   ~0x0f, BT848_COLOR_CTL);	} else if (NULL != set->bottom) {		set->bottom->vb.state = STATE_ACTIVE;		if (set->bottom->vb.queue.next)			list_del(&set->bottom->vb.queue);		bttv_apply_geo(btv, &set->bottom->geo,1);		bttv_apply_geo(btv, &set->bottom->geo,0);		bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);		bttv_risc_hook(btv, RISC_SLOT_E_FIELD, &set->bottom->bottom,			       set->frame_irq);		btaor(set->bottom->btformat & 0xff, ~0xff, BT848_COLOR_FMT);		btaor(set->bottom->btswap & 0x0f,   ~0x0f, BT848_COLOR_CTL);	} else {		bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);		bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, 0);	}	return 0;}/* ---------------------------------------------------------- *//* calculate geometry, build risc code */intbttv_buffer_risc(struct bttv *btv, struct bttv_buffer *buf){	const struct bttv_tvnorm *tvnorm = bttv_tvnorms + buf->tvnorm;	dprintk(KERN_DEBUG		"bttv%d: buffer field: %s  format: %s  size: %dx%d\n",		btv->c.nr, v4l2_field_names[buf->vb.field],		buf->fmt->name, buf->vb.width, buf->vb.height);	/* packed pixel modes */	if (buf->fmt->flags & FORMAT_FLAGS_PACKED) {		int bpl = (buf->fmt->depth >> 3) * buf->vb.width;		int bpf = bpl * (buf->vb.height >> 1);		bttv_calc_geo(btv,&buf->geo,buf->vb.width,buf->vb.height,			      V4L2_FIELD_HAS_BOTH(buf->vb.field),buf->tvnorm);		switch (buf->vb.field) {		case V4L2_FIELD_TOP:			bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist,					 0,bpl,0,buf->vb.height);			break;		case V4L2_FIELD_BOTTOM:			bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist,					 0,bpl,0,buf->vb.height);			break;		case V4L2_FIELD_INTERLACED:			bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist,					 0,bpl,bpl,buf->vb.height >> 1);			bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist,					 bpl,bpl,bpl,buf->vb.height >> 1);			break;		case V4L2_FIELD_SEQ_TB:			bttv_risc_packed(btv,&buf->top,buf->vb.dma.sglist,					 0,bpl,0,buf->vb.height >> 1);			bttv_risc_packed(btv,&buf->bottom,buf->vb.dma.sglist,					 bpf,bpl,0,buf->vb.height >> 1);			break;		default:			BUG();		}	}	/* planar modes */	if (buf->fmt->flags & FORMAT_FLAGS_PLANAR) {		int uoffset, voffset;		int ypadding, cpadding, lines;		/* calculate chroma offsets */		uoffset = buf->vb.width * buf->vb.height;		voffset = buf->vb.width * buf->vb.height;		if (buf->fmt->flags & FORMAT_FLAGS_CrCb) {			/* Y-Cr-Cb plane order */			uoffset >>= buf->fmt->hshift;			uoffset >>= buf->fmt->vshift;			uoffset  += voffset;		} else {			/* Y-Cb-Cr plane order */			voffset >>= buf->fmt->hshift;			voffset >>= buf->fmt->vshift;			voffset  += uoffset;		}		switch (buf->vb.field) {		case V4L2_FIELD_TOP:			bttv_calc_geo(btv,&buf->geo,buf->vb.width,				      buf->vb.height,0,buf->tvnorm);			bttv_risc_planar(btv, &buf->top, buf->vb.dma.sglist,					 0,buf->vb.width,0,buf->vb.height,					 uoffset,voffset,buf->fmt->hshift,					 buf->fmt->vshift,0);			break;		case V4L2_FIELD_BOTTOM:			bttv_calc_geo(btv,&buf->geo,buf->vb.width,				      buf->vb.height,0,buf->tvnorm);			bttv_risc_planar(btv, &buf->bottom, buf->vb.dma.sglist,					 0,buf->vb.width,0,buf->vb.height,					 uoffset,voffset,buf->fmt->hshift,					 buf->fmt->vshift,0);			break;		case V4L2_FIELD_INTERLACED:			bttv_calc_geo(btv,&buf->geo,buf->vb.width,				      buf->vb.height,1,buf->tvnorm);			lines    = buf->vb.height >> 1;			ypadding = buf->vb.width;			cpadding = buf->vb.width >> buf->fmt->hshift;			bttv_risc_planar(btv,&buf->top,					 buf->vb.dma.sglist,					 0,buf->vb.width,ypadding,lines,					 uoffset,voffset,					 buf->fmt->hshift,					 buf->fmt->vshift,					 cpadding);			bttv_risc_planar(btv,&buf->bottom,					 buf->vb.dma.sglist,					 ypadding,buf->vb.width,ypadding,lines,					 uoffset+cpadding,					 voffset+cpadding,					 buf->fmt->hshift,					 buf->fmt->vshift,					 cpadding);			break;		case V4L2_FIELD_SEQ_TB:			bttv_calc_geo(btv,&buf->geo,buf->vb.width,				      buf->vb.height,1,buf->tvnorm);			lines    = buf->vb.height >> 1;			ypadding = buf->vb.width;			cpadding = buf->vb.width >> buf->fmt->hshift;			bttv_risc_planar(btv,&buf->top,					 buf->vb.dma.sglist,					 0,buf->vb.width,0,lines,					 uoffset >> 1,					 voffset >> 1,					 buf->fmt->hshift,					 buf->fmt->vshift,					 0);			bttv_risc_planar(btv,&buf->bottom,					 buf->vb.dma.sglist,					 lines * ypadding,buf->vb.width,0,lines,					 lines * ypadding + (uoffset >> 1),					 lines * ypadding + (voffset >> 1),					 buf->fmt->hshift,					 buf->fmt->vshift,					 0);			break;		default:			BUG();		}	}	/* raw data */	if (buf->fmt->flags & FORMAT_FLAGS_RAW) {		/* build risc code */		buf->vb.field = V4L2_FIELD_SEQ_TB;		bttv_calc_geo(btv,&buf->geo,tvnorm->swidth,tvnorm->sheight,			      1,buf->tvnorm);		bttv_risc_packed(btv, &buf->top,  buf->vb.dma.sglist,				 0, RAW_BPL, 0, RAW_LINES);		bttv_risc_packed(btv, &buf->bottom, buf->vb.dma.sglist,				 buf->vb.size/2 , RAW_BPL, 0, RAW_LINES);	}	/* copy format info */	buf->btformat = buf->fmt->btformat;	buf->btswap   = buf->fmt->btswap;	return 0;}/* ---------------------------------------------------------- *//* calculate geometry, build risc code */intbttv_overlay_risc(struct bttv *btv,		  struct bttv_overlay *ov,		  const struct bttv_format *fmt,		  struct bttv_buffer *buf){	/* check interleave, bottom+top fields */	dprintk(KERN_DEBUG		"bttv%d: overlay fields: %s format: %s  size: %dx%d\n",		btv->c.nr, v4l2_field_names[buf->vb.field],		fmt->name,ov->w.width,ov->w.height);	/* calculate geometry */	bttv_calc_geo(btv,&buf->geo,ov->w.width,ov->w.height,		      V4L2_FIELD_HAS_BOTH(ov->field), ov->tvnorm);	/* build risc code */	switch (ov->field) {	case V4L2_FIELD_TOP:		bttv_risc_overlay(btv, &buf->top,    fmt, ov, 0, 0);		break;	case V4L2_FIELD_BOTTOM:		bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 0, 0);		break;	case V4L2_FIELD_INTERLACED:		bttv_risc_overlay(btv, &buf->top,    fmt, ov, 0, 1);		bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 1, 0);		break;	default:		BUG();	}	/* copy format info */	buf->btformat = fmt->btformat;	buf->btswap   = fmt->btswap;	buf->vb.field = ov->field;	return 0;}/* * Local variables: * c-basic-offset: 8 * End: */