diff options
Diffstat (limited to 'drivers/media/video/bttv-risc.c')
| -rw-r--r-- | drivers/media/video/bttv-risc.c | 802 |
1 files changed, 802 insertions, 0 deletions
diff --git a/drivers/media/video/bttv-risc.c b/drivers/media/video/bttv-risc.c new file mode 100644 index 00000000000..bdc5ce6c43b --- /dev/null +++ b/drivers/media/video/bttv-risc.c @@ -0,0 +1,802 @@ +/* + $Id: bttv-risc.c,v 1.10 2004/11/19 18:07:12 kraxel Exp $ + + bttv-risc.c -- interfaces to other kernel modules + + bttv risc code handling + - memory management + - generation + + (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org> + + 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/init.h> +#include <linux/pci.h> +#include <linux/vmalloc.h> +#include <linux/interrupt.h> +#include <asm/page.h> +#include <asm/pgtable.h> + +#include "bttvp.h" + +#define VCR_HACK_LINES 4 + +/* ---------------------------------------------------------- */ +/* risc code generators */ + +int +bttv_risc_packed(struct bttv *btv, struct btcx_riscmem *risc, + struct scatterlist *sglist, + unsigned int offset, unsigned int bpl, + unsigned int padding, unsigned int lines) +{ + u32 instructions,line,todo; + struct scatterlist *sg; + u32 *rp; + int rc; + + /* estimate risc mem: worst case is one write per page border + + one write per scan line + sync + jump (all 2 dwords) */ + instructions = (bpl * lines) / PAGE_SIZE + lines; + instructions += 2; + if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*8)) < 0) + return rc; + + /* sync instruction */ + rp = risc->cpu; + *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); + *(rp++) = cpu_to_le32(0); + + /* scan lines */ + sg = sglist; + for (line = 0; line < lines; line++) { + if ((btv->opt_vcr_hack) && + (line >= (lines - VCR_HACK_LINES))) + continue; + while (offset && offset >= sg_dma_len(sg)) { + offset -= sg_dma_len(sg); + sg++; + } + if (bpl <= sg_dma_len(sg)-offset) { + /* fits into current chunk */ + *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL| + BT848_RISC_EOL|bpl); + *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); + offset+=bpl; + } else { + /* scanline needs to be splitted */ + todo = bpl; + *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL| + (sg_dma_len(sg)-offset)); + *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); + todo -= (sg_dma_len(sg)-offset); + offset = 0; + sg++; + while (todo > sg_dma_len(sg)) { + *(rp++)=cpu_to_le32(BT848_RISC_WRITE| + sg_dma_len(sg)); + *(rp++)=cpu_to_le32(sg_dma_address(sg)); + todo -= sg_dma_len(sg); + sg++; + } + *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL| + todo); + *(rp++)=cpu_to_le32(sg_dma_address(sg)); + offset += todo; + } + offset += padding; + } + + /* save pointer to jmp instruction address */ + risc->jmp = rp; + BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size); + return 0; +} + +static int +bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc, + struct scatterlist *sglist, + unsigned int yoffset, unsigned int ybpl, + unsigned int ypadding, unsigned int ylines, + unsigned int uoffset, unsigned int voffset, + unsigned int hshift, unsigned int vshift, + unsigned int cpadding) +{ + unsigned int instructions,line,todo,ylen,chroma; + u32 *rp,ri; + struct scatterlist *ysg; + struct scatterlist *usg; + struct scatterlist *vsg; + int topfield = (0 == yoffset); + int rc; + + /* estimate risc mem: worst case is one write per page border + + one write per scan line (5 dwords) + plus sync + jump (2 dwords) */ + instructions = (ybpl * ylines * 2) / PAGE_SIZE + ylines; + instructions += 2; + if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*4*5)) < 0) + return rc; + + /* sync instruction */ + rp = risc->cpu; + *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM3); + *(rp++) = cpu_to_le32(0); + + /* scan lines */ + ysg = sglist; + usg = sglist; + vsg = sglist; + for (line = 0; line < ylines; line++) { + if ((btv->opt_vcr_hack) && + (line >= (ylines - VCR_HACK_LINES))) + continue; + switch (vshift) { + case 0: + chroma = 1; + break; + case 1: + if (topfield) + chroma = ((line & 1) == 0); + else + chroma = ((line & 1) == 1); + break; + case 2: + if (topfield) + chroma = ((line & 3) == 0); + else + chroma = ((line & 3) == 2); + break; + default: + chroma = 0; + break; + } + + for (todo = ybpl; todo > 0; todo -= ylen) { + /* go to next sg entry if needed */ + while (yoffset && yoffset >= sg_dma_len(ysg)) { + yoffset -= sg_dma_len(ysg); + ysg++; + } + while (uoffset && uoffset >= sg_dma_len(usg)) { + uoffset -= sg_dma_len(usg); + usg++; + } + while (voffset && voffset >= sg_dma_len(vsg)) { + voffset -= sg_dma_len(vsg); + vsg++; + } + + /* calculate max number of bytes we can write */ + ylen = todo; + if (yoffset + ylen > sg_dma_len(ysg)) + ylen = sg_dma_len(ysg) - yoffset; + if (chroma) { + if (uoffset + (ylen>>hshift) > sg_dma_len(usg)) + ylen = (sg_dma_len(usg) - uoffset) << hshift; + if (voffset + (ylen>>hshift) > sg_dma_len(vsg)) + ylen = (sg_dma_len(vsg) - voffset) << hshift; + ri = BT848_RISC_WRITE123; + } else { + ri = BT848_RISC_WRITE1S23; + } + if (ybpl == todo) + ri |= BT848_RISC_SOL; + if (ylen == todo) + ri |= BT848_RISC_EOL; + + /* write risc instruction */ + *(rp++)=cpu_to_le32(ri | ylen); + *(rp++)=cpu_to_le32(((ylen >> hshift) << 16) | + (ylen >> hshift)); + *(rp++)=cpu_to_le32(sg_dma_address(ysg)+yoffset); + yoffset += ylen; + if (chroma) { + *(rp++)=cpu_to_le32(sg_dma_address(usg)+uoffset); + uoffset += ylen >> hshift; + *(rp++)=cpu_to_le32(sg_dma_address(vsg)+voffset); + voffset += ylen >> hshift; + } + } + yoffset += ypadding; + if (chroma) { + uoffset += cpadding; + voffset += cpadding; + } + } + + /* save pointer to jmp instruction address */ + risc->jmp = rp; + BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size); + return 0; +} + +static int +bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc, + const struct bttv_format *fmt, struct bttv_overlay *ov, + int skip_even, int skip_odd) +{ + int instructions,rc,line,maxy,start,end,skip,nskips; + struct btcx_skiplist *skips; + u32 *rp,ri,ra; + u32 addr; + + /* skip list for window clipping */ + if (NULL == (skips = kmalloc(sizeof(*skips) * ov->nclips,GFP_KERNEL))) + return -ENOMEM; + + /* estimate risc mem: worst case is (clip+1) * lines instructions + + sync + jump (all 2 dwords) */ + instructions = (ov->nclips + 1) * + ((skip_even || skip_odd) ? ov->w.height>>1 : ov->w.height); + instructions += 2; + if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*8)) < 0) { + kfree(skips); + return rc; + } + + /* sync instruction */ + rp = risc->cpu; + *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); + *(rp++) = cpu_to_le32(0); + + addr = (unsigned long)btv->fbuf.base; + addr += btv->fbuf.fmt.bytesperline * ov->w.top; + addr += (fmt->depth >> 3) * ov->w.left; + + /* scan lines */ + for (maxy = -1, line = 0; line < ov->w.height; + line++, addr += btv->fbuf.fmt.bytesperline) { + if ((btv->opt_vcr_hack) && + (line >= (ov->w.height - VCR_HACK_LINES))) + continue; + if ((line%2) == 0 && skip_even) + continue; + if ((line%2) == 1 && skip_odd) + continue; + + /* calculate clipping */ + if (line > maxy) + btcx_calc_skips(line, ov->w.width, &maxy, + skips, &nskips, ov->clips, ov->nclips); + + /* write out risc code */ + for (start = 0, skip = 0; start < ov->w.width; start = end) { + if (skip >= nskips) { + ri = BT848_RISC_WRITE; + end = ov->w.width; + } else if (start < skips[skip].start) { + ri = BT848_RISC_WRITE; + end = skips[skip].start; + } else { + ri = BT848_RISC_SKIP; + end = skips[skip].end; + skip++; + } + if (BT848_RISC_WRITE == ri) + ra = addr + (fmt->depth>>3)*start; + else + ra = 0; + + if (0 == start) + ri |= BT848_RISC_SOL; + if (ov->w.width == end) + ri |= BT848_RISC_EOL; + ri |= (fmt->depth>>3) * (end-start); + + *(rp++)=cpu_to_le32(ri); + if (0 != ra) + *(rp++)=cpu_to_le32(ra); + } + } + + /* save pointer to jmp instruction address */ + risc->jmp = rp; + BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size); + kfree(skips); + return 0; +} + +/* ---------------------------------------------------------- */ + +static void +bttv_calc_geo(struct bttv *btv, struct bttv_geometry *geo, + int width, int height, int interleaved, int norm) +{ + const struct bttv_tvnorm *tvnorm = &bttv_tvnorms[norm]; + u32 xsf, sr; + int vdelay; + + int swidth = tvnorm->swidth; + int totalwidth = tvnorm->totalwidth; + int scaledtwidth = tvnorm->scaledtwidth; + + if (bttv_tvcards[btv->c.type].muxsel[btv->input] < 0) { + swidth = 720; + totalwidth = 858; + scaledtwidth = 858; + } + + vdelay = tvnorm->vdelay; +#if 0 /* FIXME */ + if (vdelay < btv->vbi.lines*2) + vdelay = btv->vbi.lines*2; +#endif + + xsf = (width*scaledtwidth)/swidth; + geo->hscale = ((totalwidth*4096UL)/xsf-4096); + geo->hdelay = tvnorm->hdelayx1; + geo->hdelay = (geo->hdelay*width)/swidth; + geo->hdelay &= 0x3fe; + sr = ((tvnorm->sheight >> (interleaved?0:1))*512)/height - 512; + geo->vscale = (0x10000UL-sr) & 0x1fff; + geo->crop = ((width>>8)&0x03) | ((geo->hdelay>>6)&0x0c) | + ((tvnorm->sheight>>4)&0x30) | ((vdelay>>2)&0xc0); + geo->vscale |= interleaved ? (BT848_VSCALE_INT<<8) : 0; + geo->vdelay = vdelay; + geo->width = width; + geo->sheight = tvnorm->sheight; + geo->vtotal = tvnorm->vtotal; + + if (btv->opt_combfilter) { + geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0); + geo->comb = (width < 769) ? 1 : 0; + } else { + geo->vtc = 0; + geo->comb = 0; + } +} + +static void +bttv_apply_geo(struct bttv *btv, struct bttv_geometry *geo, int odd) +{ + int off = odd ? 0x80 : 0x00; + + if (geo->comb) + btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off); + else + btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off); + + btwrite(geo->vtc, BT848_E_VTC+off); + btwrite(geo->hscale >> 8, BT848_E_HSCALE_HI+off); + btwrite(geo->hscale & 0xff, BT848_E_HSCALE_LO+off); + btaor((geo->vscale>>8), 0xe0, BT848_E_VSCALE_HI+off); + btwrite(geo->vscale & 0xff, BT848_E_VSCALE_LO+off); + btwrite(geo->width & 0xff, BT848_E_HACTIVE_LO+off); + btwrite(geo->hdelay & 0xff, BT848_E_HDELAY_LO+off); + btwrite(geo->sheight & 0xff, BT848_E_VACTIVE_LO+off); + btwrite(geo->vdelay & 0xff, BT848_E_VDELAY_LO+off); + btwrite(geo->crop, BT848_E_CROP+off); + btwrite(geo->vtotal>>8, BT848_VTOTAL_HI); + btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO); +} + +/* ---------------------------------------------------------- */ +/* risc group / risc main loop / dma management */ + +void +bttv_set_dma(struct bttv *btv, int override) +{ + unsigned long cmd; + int capctl; + + btv->cap_ctl = 0; + if (NULL != btv->curr.top) btv->cap_ctl |= 0x02; + if (NULL != btv->curr.bottom) btv->cap_ctl |= 0x01; + if (NULL != btv->cvbi) btv->cap_ctl |= 0x0c; + + 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; +} + +int +bttv_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; +} + +int +bttv_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; +} + +void +bttv_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; +} + +int +bttv_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; +} + +int +bttv_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 */ +int +bttv_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 */ +int +bttv_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: +#if 0 + bttv_risc_overlay(btv, &buf->top, fmt, ov, 1, 0); + bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 0, 1); +#else + bttv_risc_overlay(btv, &buf->top, fmt, ov, 0, 1); + bttv_risc_overlay(btv, &buf->bottom, fmt, ov, 1, 0); +#endif + 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: + */ |