// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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bttv-risc.c -- interfaces to other kernel modules
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bttv risc code handling
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- memory management
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- generation
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(c) 2000-2003 Gerd Knorr <kraxel@bytesex.org>
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/vmalloc.h>
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#include <linux/interrupt.h>
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#include <linux/pgtable.h>
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#include <asm/page.h>
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#include <media/v4l2-ioctl.h>
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#include "bttvp.h"
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#define VCR_HACK_LINES 4
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/* ---------------------------------------------------------- */
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/* risc code generators */
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int
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bttv_risc_packed(struct bttv *btv, struct btcx_riscmem *risc,
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struct scatterlist *sglist,
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unsigned int offset, unsigned int bpl,
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unsigned int padding, unsigned int skip_lines,
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unsigned int store_lines)
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{
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u32 instructions,line,todo;
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struct scatterlist *sg;
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__le32 *rp;
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int rc;
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/* estimate risc mem: worst case is one write per page border +
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one write per scan line + sync + jump (all 2 dwords). padding
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can cause next bpl to start close to a page border. First DMA
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region may be smaller than PAGE_SIZE */
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instructions = skip_lines * 4;
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instructions += (1 + ((bpl + padding) * store_lines)
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/ PAGE_SIZE + store_lines) * 8;
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instructions += 2 * 8;
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if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions)) < 0)
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return rc;
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/* sync instruction */
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rp = risc->cpu;
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*(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
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*(rp++) = cpu_to_le32(0);
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while (skip_lines-- > 0) {
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*(rp++) = cpu_to_le32(BT848_RISC_SKIP | BT848_RISC_SOL |
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BT848_RISC_EOL | bpl);
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}
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/* scan lines */
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sg = sglist;
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for (line = 0; line < store_lines; line++) {
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if ((btv->opt_vcr_hack) &&
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(line >= (store_lines - VCR_HACK_LINES)))
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continue;
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while (offset && offset >= sg_dma_len(sg)) {
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offset -= sg_dma_len(sg);
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sg = sg_next(sg);
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}
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if (bpl <= sg_dma_len(sg)-offset) {
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/* fits into current chunk */
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*(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
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BT848_RISC_EOL|bpl);
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*(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
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offset+=bpl;
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} else {
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/* scanline needs to be split */
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todo = bpl;
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*(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
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(sg_dma_len(sg)-offset));
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*(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
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todo -= (sg_dma_len(sg)-offset);
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offset = 0;
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sg = sg_next(sg);
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while (todo > sg_dma_len(sg)) {
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*(rp++)=cpu_to_le32(BT848_RISC_WRITE|
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sg_dma_len(sg));
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*(rp++)=cpu_to_le32(sg_dma_address(sg));
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todo -= sg_dma_len(sg);
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sg = sg_next(sg);
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}
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*(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL|
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todo);
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*(rp++)=cpu_to_le32(sg_dma_address(sg));
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offset += todo;
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}
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offset += padding;
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}
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/* save pointer to jmp instruction address */
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risc->jmp = rp;
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BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
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return 0;
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}
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static int
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bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc,
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struct scatterlist *sglist,
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unsigned int yoffset, unsigned int ybpl,
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unsigned int ypadding, unsigned int ylines,
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unsigned int uoffset, unsigned int voffset,
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unsigned int hshift, unsigned int vshift,
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unsigned int cpadding)
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{
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unsigned int instructions,line,todo,ylen,chroma;
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__le32 *rp;
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u32 ri;
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struct scatterlist *ysg;
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struct scatterlist *usg;
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struct scatterlist *vsg;
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int topfield = (0 == yoffset);
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int rc;
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/* estimate risc mem: worst case is one write per page border +
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one write per scan line (5 dwords)
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plus sync + jump (2 dwords) */
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instructions = ((3 + (ybpl + ypadding) * ylines * 2)
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/ PAGE_SIZE) + ylines;
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instructions += 2;
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if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*4*5)) < 0)
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return rc;
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/* sync instruction */
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rp = risc->cpu;
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*(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM3);
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*(rp++) = cpu_to_le32(0);
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/* scan lines */
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ysg = sglist;
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usg = sglist;
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vsg = sglist;
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for (line = 0; line < ylines; line++) {
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if ((btv->opt_vcr_hack) &&
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(line >= (ylines - VCR_HACK_LINES)))
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continue;
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switch (vshift) {
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case 0:
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chroma = 1;
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break;
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case 1:
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if (topfield)
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chroma = ((line & 1) == 0);
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else
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chroma = ((line & 1) == 1);
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break;
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case 2:
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if (topfield)
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chroma = ((line & 3) == 0);
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else
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chroma = ((line & 3) == 2);
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break;
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default:
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chroma = 0;
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break;
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}
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for (todo = ybpl; todo > 0; todo -= ylen) {
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/* go to next sg entry if needed */
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while (yoffset && yoffset >= sg_dma_len(ysg)) {
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yoffset -= sg_dma_len(ysg);
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ysg = sg_next(ysg);
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}
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/* calculate max number of bytes we can write */
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ylen = todo;
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if (yoffset + ylen > sg_dma_len(ysg))
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ylen = sg_dma_len(ysg) - yoffset;
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if (chroma) {
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while (uoffset && uoffset >= sg_dma_len(usg)) {
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uoffset -= sg_dma_len(usg);
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usg = sg_next(usg);
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}
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while (voffset && voffset >= sg_dma_len(vsg)) {
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voffset -= sg_dma_len(vsg);
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vsg = sg_next(vsg);
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}
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if (uoffset + (ylen>>hshift) > sg_dma_len(usg))
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ylen = (sg_dma_len(usg) - uoffset) << hshift;
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if (voffset + (ylen>>hshift) > sg_dma_len(vsg))
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ylen = (sg_dma_len(vsg) - voffset) << hshift;
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ri = BT848_RISC_WRITE123;
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} else {
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ri = BT848_RISC_WRITE1S23;
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}
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if (ybpl == todo)
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ri |= BT848_RISC_SOL;
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if (ylen == todo)
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ri |= BT848_RISC_EOL;
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/* write risc instruction */
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*(rp++)=cpu_to_le32(ri | ylen);
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*(rp++)=cpu_to_le32(((ylen >> hshift) << 16) |
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(ylen >> hshift));
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*(rp++)=cpu_to_le32(sg_dma_address(ysg)+yoffset);
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yoffset += ylen;
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if (chroma) {
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*(rp++)=cpu_to_le32(sg_dma_address(usg)+uoffset);
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uoffset += ylen >> hshift;
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*(rp++)=cpu_to_le32(sg_dma_address(vsg)+voffset);
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voffset += ylen >> hshift;
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}
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}
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yoffset += ypadding;
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if (chroma) {
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uoffset += cpadding;
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voffset += cpadding;
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}
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}
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/* save pointer to jmp instruction address */
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risc->jmp = rp;
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BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
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return 0;
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}
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static int
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bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc,
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const struct bttv_format *fmt, struct bttv_overlay *ov,
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int skip_even, int skip_odd)
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{
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int dwords, rc, line, maxy, start, end;
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unsigned skip, nskips;
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struct btcx_skiplist *skips;
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__le32 *rp;
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u32 ri,ra;
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u32 addr;
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/* skip list for window clipping */
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skips = kmalloc_array(ov->nclips, sizeof(*skips),GFP_KERNEL);
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if (NULL == skips)
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return -ENOMEM;
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/* estimate risc mem: worst case is (1.5*clip+1) * lines instructions
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+ sync + jump (all 2 dwords) */
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dwords = (3 * ov->nclips + 2) *
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((skip_even || skip_odd) ? (ov->w.height+1)>>1 : ov->w.height);
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dwords += 4;
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if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,dwords*4)) < 0) {
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kfree(skips);
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return rc;
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}
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/* sync instruction */
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rp = risc->cpu;
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*(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
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*(rp++) = cpu_to_le32(0);
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addr = (unsigned long)btv->fbuf.base;
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addr += btv->fbuf.fmt.bytesperline * ov->w.top;
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addr += (fmt->depth >> 3) * ov->w.left;
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/* scan lines */
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for (maxy = -1, line = 0; line < ov->w.height;
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line++, addr += btv->fbuf.fmt.bytesperline) {
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if ((btv->opt_vcr_hack) &&
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(line >= (ov->w.height - VCR_HACK_LINES)))
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continue;
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if ((line%2) == 0 && skip_even)
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continue;
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if ((line%2) == 1 && skip_odd)
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continue;
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/* calculate clipping */
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if (line > maxy)
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btcx_calc_skips(line, ov->w.width, &maxy,
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skips, &nskips, ov->clips, ov->nclips);
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/* write out risc code */
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for (start = 0, skip = 0; start < ov->w.width; start = end) {
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if (skip >= nskips) {
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ri = BT848_RISC_WRITE;
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end = ov->w.width;
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} else if (start < skips[skip].start) {
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ri = BT848_RISC_WRITE;
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end = skips[skip].start;
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} else {
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ri = BT848_RISC_SKIP;
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end = skips[skip].end;
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skip++;
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}
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if (BT848_RISC_WRITE == ri)
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ra = addr + (fmt->depth>>3)*start;
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else
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ra = 0;
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if (0 == start)
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ri |= BT848_RISC_SOL;
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if (ov->w.width == end)
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ri |= BT848_RISC_EOL;
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ri |= (fmt->depth>>3) * (end-start);
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*(rp++)=cpu_to_le32(ri);
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if (0 != ra)
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*(rp++)=cpu_to_le32(ra);
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}
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}
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/* save pointer to jmp instruction address */
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risc->jmp = rp;
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BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
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kfree(skips);
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return 0;
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}
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/* ---------------------------------------------------------- */
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static void
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bttv_calc_geo_old(struct bttv *btv, struct bttv_geometry *geo,
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int width, int height, int interleaved,
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const struct bttv_tvnorm *tvnorm)
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{
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u32 xsf, sr;
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int vdelay;
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int swidth = tvnorm->swidth;
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int totalwidth = tvnorm->totalwidth;
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int scaledtwidth = tvnorm->scaledtwidth;
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if (btv->input == btv->dig) {
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swidth = 720;
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totalwidth = 858;
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scaledtwidth = 858;
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}
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vdelay = tvnorm->vdelay;
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xsf = (width*scaledtwidth)/swidth;
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geo->hscale = ((totalwidth*4096UL)/xsf-4096);
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geo->hdelay = tvnorm->hdelayx1;
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geo->hdelay = (geo->hdelay*width)/swidth;
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geo->hdelay &= 0x3fe;
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sr = ((tvnorm->sheight >> (interleaved?0:1))*512)/height - 512;
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geo->vscale = (0x10000UL-sr) & 0x1fff;
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geo->crop = ((width>>8)&0x03) | ((geo->hdelay>>6)&0x0c) |
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((tvnorm->sheight>>4)&0x30) | ((vdelay>>2)&0xc0);
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geo->vscale |= interleaved ? (BT848_VSCALE_INT<<8) : 0;
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geo->vdelay = vdelay;
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geo->width = width;
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geo->sheight = tvnorm->sheight;
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geo->vtotal = tvnorm->vtotal;
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if (btv->opt_combfilter) {
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geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0);
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geo->comb = (width < 769) ? 1 : 0;
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} else {
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geo->vtc = 0;
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geo->comb = 0;
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}
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}
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static void
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bttv_calc_geo (struct bttv * btv,
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struct bttv_geometry * geo,
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unsigned int width,
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unsigned int height,
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int both_fields,
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const struct bttv_tvnorm * tvnorm,
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const struct v4l2_rect * crop)
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{
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unsigned int c_width;
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unsigned int c_height;
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u32 sr;
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if ((crop->left == tvnorm->cropcap.defrect.left
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&& crop->top == tvnorm->cropcap.defrect.top
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&& crop->width == tvnorm->cropcap.defrect.width
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&& crop->height == tvnorm->cropcap.defrect.height
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&& width <= tvnorm->swidth /* see PAL-Nc et al */)
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|| btv->input == btv->dig) {
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bttv_calc_geo_old(btv, geo, width, height,
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both_fields, tvnorm);
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return;
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}
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/* For bug compatibility the image size checks permit scale
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factors > 16. See bttv_crop_calc_limits(). */
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c_width = min((unsigned int) crop->width, width * 16);
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c_height = min((unsigned int) crop->height, height * 16);
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geo->width = width;
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geo->hscale = (c_width * 4096U + (width >> 1)) / width - 4096;
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/* Even to store Cb first, odd for Cr. */
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geo->hdelay = ((crop->left * width + c_width) / c_width) & ~1;
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geo->sheight = c_height;
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geo->vdelay = crop->top - tvnorm->cropcap.bounds.top + MIN_VDELAY;
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sr = c_height >> !both_fields;
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sr = (sr * 512U + (height >> 1)) / height - 512;
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geo->vscale = (0x10000UL - sr) & 0x1fff;
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geo->vscale |= both_fields ? (BT848_VSCALE_INT << 8) : 0;
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geo->vtotal = tvnorm->vtotal;
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geo->crop = (((geo->width >> 8) & 0x03) |
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((geo->hdelay >> 6) & 0x0c) |
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((geo->sheight >> 4) & 0x30) |
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((geo->vdelay >> 2) & 0xc0));
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if (btv->opt_combfilter) {
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geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0);
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geo->comb = (width < 769) ? 1 : 0;
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} else {
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geo->vtc = 0;
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geo->comb = 0;
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}
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}
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static void
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bttv_apply_geo(struct bttv *btv, struct bttv_geometry *geo, int odd)
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{
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int off = odd ? 0x80 : 0x00;
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if (geo->comb)
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btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
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else
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btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
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btwrite(geo->vtc, BT848_E_VTC+off);
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btwrite(geo->hscale >> 8, BT848_E_HSCALE_HI+off);
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btwrite(geo->hscale & 0xff, BT848_E_HSCALE_LO+off);
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btaor((geo->vscale>>8), 0xe0, BT848_E_VSCALE_HI+off);
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btwrite(geo->vscale & 0xff, BT848_E_VSCALE_LO+off);
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btwrite(geo->width & 0xff, BT848_E_HACTIVE_LO+off);
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btwrite(geo->hdelay & 0xff, BT848_E_HDELAY_LO+off);
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btwrite(geo->sheight & 0xff, BT848_E_VACTIVE_LO+off);
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btwrite(geo->vdelay & 0xff, BT848_E_VDELAY_LO+off);
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btwrite(geo->crop, BT848_E_CROP+off);
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btwrite(geo->vtotal>>8, BT848_VTOTAL_HI);
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btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO);
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}
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/* ---------------------------------------------------------- */
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/* risc group / risc main loop / dma management */
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void
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bttv_set_dma(struct bttv *btv, int override)
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{
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unsigned long cmd;
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int capctl;
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btv->cap_ctl = 0;
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if (NULL != btv->curr.top) btv->cap_ctl |= 0x02;
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if (NULL != btv->curr.bottom) btv->cap_ctl |= 0x01;
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if (NULL != btv->cvbi) btv->cap_ctl |= 0x0c;
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capctl = 0;
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capctl |= (btv->cap_ctl & 0x03) ? 0x03 : 0x00; /* capture */
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capctl |= (btv->cap_ctl & 0x0c) ? 0x0c : 0x00; /* vbi data */
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capctl |= override;
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d2printk("%d: capctl=%x lirq=%d top=%08llx/%08llx even=%08llx/%08llx\n",
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btv->c.nr,capctl,btv->loop_irq,
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btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0,
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btv->curr.top ? (unsigned long long)btv->curr.top->top.dma : 0,
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btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0,
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btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
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cmd = BT848_RISC_JUMP;
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if (btv->loop_irq) {
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cmd |= BT848_RISC_IRQ;
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cmd |= (btv->loop_irq & 0x0f) << 16;
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cmd |= (~btv->loop_irq & 0x0f) << 20;
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}
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if (btv->curr.frame_irq || btv->loop_irq || btv->cvbi) {
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mod_timer(&btv->timeout, jiffies+BTTV_TIMEOUT);
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} else {
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del_timer(&btv->timeout);
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}
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btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd);
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btaor(capctl, ~0x0f, BT848_CAP_CTL);
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if (capctl) {
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if (btv->dma_on)
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return;
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btwrite(btv->main.dma, BT848_RISC_STRT_ADD);
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btor(3, BT848_GPIO_DMA_CTL);
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btv->dma_on = 1;
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} else {
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if (!btv->dma_on)
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return;
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btand(~3, BT848_GPIO_DMA_CTL);
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btv->dma_on = 0;
|
}
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return;
|
}
|
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int
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bttv_risc_init_main(struct bttv *btv)
|
{
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int rc;
|
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if ((rc = btcx_riscmem_alloc(btv->c.pci,&btv->main,PAGE_SIZE)) < 0)
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return rc;
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dprintk("%d: risc main @ %08llx\n",
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btv->c.nr, (unsigned long long)btv->main.dma);
|
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btv->main.cpu[0] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC |
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BT848_FIFO_STATUS_VRE);
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btv->main.cpu[1] = cpu_to_le32(0);
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btv->main.cpu[2] = cpu_to_le32(BT848_RISC_JUMP);
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btv->main.cpu[3] = cpu_to_le32(btv->main.dma + (4<<2));
|
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/* top field */
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btv->main.cpu[4] = cpu_to_le32(BT848_RISC_JUMP);
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btv->main.cpu[5] = cpu_to_le32(btv->main.dma + (6<<2));
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btv->main.cpu[6] = cpu_to_le32(BT848_RISC_JUMP);
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btv->main.cpu[7] = cpu_to_le32(btv->main.dma + (8<<2));
|
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btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC |
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BT848_FIFO_STATUS_VRO);
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btv->main.cpu[9] = cpu_to_le32(0);
|
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/* bottom field */
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btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP);
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btv->main.cpu[11] = cpu_to_le32(btv->main.dma + (12<<2));
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btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP);
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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("%d: risc=%p slot[%d]=NULL\n", btv->c.nr, risc, slot);
|
btv->main.cpu[slot+1] = cpu_to_le32(next);
|
} else {
|
d2printk("%d: risc=%p slot[%d]=%08llx 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 videobuf_queue *q,struct bttv *btv, struct bttv_buffer *buf)
|
{
|
struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
|
|
BUG_ON(in_interrupt());
|
videobuf_waiton(q, &buf->vb, 0, 0);
|
videobuf_dma_unmap(q->dev, dma);
|
videobuf_dma_free(dma);
|
btcx_riscmem_free(btv->c.pci,&buf->bottom);
|
btcx_riscmem_free(btv->c.pci,&buf->top);
|
buf->vb.state = VIDEOBUF_NEEDS_INIT;
|
}
|
|
int
|
bttv_buffer_activate_vbi(struct bttv *btv,
|
struct bttv_buffer *vbi)
|
{
|
struct btcx_riscmem *top;
|
struct btcx_riscmem *bottom;
|
int top_irq_flags;
|
int bottom_irq_flags;
|
|
top = NULL;
|
bottom = NULL;
|
top_irq_flags = 0;
|
bottom_irq_flags = 0;
|
|
if (vbi) {
|
unsigned int crop, vdelay;
|
|
vbi->vb.state = VIDEOBUF_ACTIVE;
|
list_del(&vbi->vb.queue);
|
|
/* VDELAY is start of video, end of VBI capturing. */
|
crop = btread(BT848_E_CROP);
|
vdelay = btread(BT848_E_VDELAY_LO) + ((crop & 0xc0) << 2);
|
|
if (vbi->geo.vdelay > vdelay) {
|
vdelay = vbi->geo.vdelay & 0xfe;
|
crop = (crop & 0x3f) | ((vbi->geo.vdelay >> 2) & 0xc0);
|
|
btwrite(vdelay, BT848_E_VDELAY_LO);
|
btwrite(crop, BT848_E_CROP);
|
btwrite(vdelay, BT848_O_VDELAY_LO);
|
btwrite(crop, BT848_O_CROP);
|
}
|
|
if (vbi->vbi_count[0] > 0) {
|
top = &vbi->top;
|
top_irq_flags = 4;
|
}
|
|
if (vbi->vbi_count[1] > 0) {
|
top_irq_flags = 0;
|
bottom = &vbi->bottom;
|
bottom_irq_flags = 4;
|
}
|
}
|
|
bttv_risc_hook(btv, RISC_SLOT_O_VBI, top, top_irq_flags);
|
bttv_risc_hook(btv, RISC_SLOT_E_VBI, bottom, bottom_irq_flags);
|
|
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 = VIDEOBUF_ACTIVE;
|
if (set->top->vb.queue.next)
|
list_del(&set->top->vb.queue);
|
} else {
|
set->top->vb.state = VIDEOBUF_ACTIVE;
|
set->bottom->vb.state = VIDEOBUF_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 = VIDEOBUF_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 = VIDEOBUF_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;
|
struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
|
|
dprintk("%d: buffer field: %s format: 0x%08x size: %dx%d\n",
|
btv->c.nr, v4l2_field_names[buf->vb.field],
|
buf->fmt->fourcc, 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),
|
tvnorm,&buf->crop);
|
|
switch (buf->vb.field) {
|
case V4L2_FIELD_TOP:
|
bttv_risc_packed(btv,&buf->top,dma->sglist,
|
/* offset */ 0,bpl,
|
/* padding */ 0,/* skip_lines */ 0,
|
buf->vb.height);
|
break;
|
case V4L2_FIELD_BOTTOM:
|
bttv_risc_packed(btv,&buf->bottom,dma->sglist,
|
0,bpl,0,0,buf->vb.height);
|
break;
|
case V4L2_FIELD_INTERLACED:
|
bttv_risc_packed(btv,&buf->top,dma->sglist,
|
0,bpl,bpl,0,buf->vb.height >> 1);
|
bttv_risc_packed(btv,&buf->bottom,dma->sglist,
|
bpl,bpl,bpl,0,buf->vb.height >> 1);
|
break;
|
case V4L2_FIELD_SEQ_TB:
|
bttv_risc_packed(btv,&buf->top,dma->sglist,
|
0,bpl,0,0,buf->vb.height >> 1);
|
bttv_risc_packed(btv,&buf->bottom,dma->sglist,
|
bpf,bpl,0,0,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,/* both_fields */ 0,
|
tvnorm,&buf->crop);
|
bttv_risc_planar(btv, &buf->top, 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,
|
tvnorm,&buf->crop);
|
bttv_risc_planar(btv, &buf->bottom, 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,
|
tvnorm,&buf->crop);
|
lines = buf->vb.height >> 1;
|
ypadding = buf->vb.width;
|
cpadding = buf->vb.width >> buf->fmt->hshift;
|
bttv_risc_planar(btv,&buf->top,
|
dma->sglist,
|
0,buf->vb.width,ypadding,lines,
|
uoffset,voffset,
|
buf->fmt->hshift,
|
buf->fmt->vshift,
|
cpadding);
|
bttv_risc_planar(btv,&buf->bottom,
|
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,
|
tvnorm,&buf->crop);
|
lines = buf->vb.height >> 1;
|
ypadding = buf->vb.width;
|
cpadding = buf->vb.width >> buf->fmt->hshift;
|
bttv_risc_planar(btv,&buf->top,
|
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,
|
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,tvnorm,&buf->crop);
|
bttv_risc_packed(btv, &buf->top, dma->sglist,
|
/* offset */ 0, RAW_BPL, /* padding */ 0,
|
/* skip_lines */ 0, RAW_LINES);
|
bttv_risc_packed(btv, &buf->bottom, dma->sglist,
|
buf->vb.size/2 , RAW_BPL, 0, 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("%d: overlay fields: %s format: 0x%08x size: %dx%d\n",
|
btv->c.nr, v4l2_field_names[buf->vb.field],
|
fmt->fourcc, 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),
|
&bttv_tvnorms[ov->tvnorm],&buf->crop);
|
|
/* 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;
|
}
|
