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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-14 11:49:09 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-15 16:35:54 -0300
commit68de959f773a1d49096835c411390bceff5d1549 (patch)
tree99f48fd448c97981b1793f426e28df0d54d880bf /drivers/media/video/bt8xx/bttv-risc.c
parent0aa77f6c2954896b132f8b6f2e9f063c52800913 (diff)
[media] bt8xx: move analog TV part to be together with DTV one
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/bt8xx/bttv-risc.c')
-rw-r--r--drivers/media/video/bt8xx/bttv-risc.c909
1 files changed, 0 insertions, 909 deletions
diff --git a/drivers/media/video/bt8xx/bttv-risc.c b/drivers/media/video/bt8xx/bttv-risc.c
deleted file mode 100644
index 82cc47d2e3fa..000000000000
--- a/drivers/media/video/bt8xx/bttv-risc.c
+++ /dev/null
@@ -1,909 +0,0 @@
-/*
-
- 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.
-
-*/
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/vmalloc.h>
-#include <linux/interrupt.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <media/v4l2-ioctl.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 skip_lines,
- unsigned int store_lines)
-{
- u32 instructions,line,todo;
- struct scatterlist *sg;
- __le32 *rp;
- int rc;
-
- /* estimate risc mem: worst case is one write per page border +
- one write per scan line + sync + jump (all 2 dwords). padding
- can cause next bpl to start close to a page border. First DMA
- region may be smaller than PAGE_SIZE */
- instructions = skip_lines * 4;
- instructions += (1 + ((bpl + padding) * store_lines)
- / PAGE_SIZE + store_lines) * 8;
- instructions += 2 * 8;
- if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions)) < 0)
- return rc;
-
- /* sync instruction */
- rp = risc->cpu;
- *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
- *(rp++) = cpu_to_le32(0);
-
- while (skip_lines-- > 0) {
- *(rp++) = cpu_to_le32(BT848_RISC_SKIP | BT848_RISC_SOL |
- BT848_RISC_EOL | bpl);
- }
-
- /* scan lines */
- sg = sglist;
- for (line = 0; line < store_lines; line++) {
- if ((btv->opt_vcr_hack) &&
- (line >= (store_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) * sizeof(*risc->cpu) > 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;
- __le32 *rp;
- u32 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 = ((3 + (ybpl + ypadding) * 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) * sizeof(*risc->cpu) > 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 dwords, rc, line, maxy, start, end;
- unsigned skip, nskips;
- struct btcx_skiplist *skips;
- __le32 *rp;
- u32 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 (1.5*clip+1) * lines instructions
- + sync + jump (all 2 dwords) */
- dwords = (3 * ov->nclips + 2) *
- ((skip_even || skip_odd) ? (ov->w.height+1)>>1 : ov->w.height);
- dwords += 4;
- if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,dwords*4)) < 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) * sizeof(*risc->cpu) > risc->size);
- kfree(skips);
- return 0;
-}
-
-/* ---------------------------------------------------------- */
-
-static void
-bttv_calc_geo_old(struct bttv *btv, struct bttv_geometry *geo,
- int width, int height, int interleaved,
- const struct bttv_tvnorm *tvnorm)
-{
- u32 xsf, sr;
- int vdelay;
-
- int swidth = tvnorm->swidth;
- int totalwidth = tvnorm->totalwidth;
- int scaledtwidth = tvnorm->scaledtwidth;
-
- if (btv->input == btv->dig) {
- swidth = 720;
- totalwidth = 858;
- scaledtwidth = 858;
- }
-
- vdelay = tvnorm->vdelay;
-
- 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_calc_geo (struct bttv * btv,
- struct bttv_geometry * geo,
- unsigned int width,
- unsigned int height,
- int both_fields,
- const struct bttv_tvnorm * tvnorm,
- const struct v4l2_rect * crop)
-{
- unsigned int c_width;
- unsigned int c_height;
- u32 sr;
-
- if ((crop->left == tvnorm->cropcap.defrect.left
- && crop->top == tvnorm->cropcap.defrect.top
- && crop->width == tvnorm->cropcap.defrect.width
- && crop->height == tvnorm->cropcap.defrect.height
- && width <= tvnorm->swidth /* see PAL-Nc et al */)
- || btv->input == btv->dig) {
- bttv_calc_geo_old(btv, geo, width, height,
- both_fields, tvnorm);
- return;
- }
-
- /* For bug compatibility the image size checks permit scale
- factors > 16. See bttv_crop_calc_limits(). */
- c_width = min((unsigned int) crop->width, width * 16);
- c_height = min((unsigned int) crop->height, height * 16);
-
- geo->width = width;
- geo->hscale = (c_width * 4096U + (width >> 1)) / width - 4096;
- /* Even to store Cb first, odd for Cr. */
- geo->hdelay = ((crop->left * width + c_width) / c_width) & ~1;
-
- geo->sheight = c_height;
- geo->vdelay = crop->top - tvnorm->cropcap.bounds.top + MIN_VDELAY;
- sr = c_height >> !both_fields;
- sr = (sr * 512U + (height >> 1)) / height - 512;
- geo->vscale = (0x10000UL - sr) & 0x1fff;
- geo->vscale |= both_fields ? (BT848_VSCALE_INT << 8) : 0;
- geo->vtotal = tvnorm->vtotal;
-
- geo->crop = (((geo->width >> 8) & 0x03) |
- ((geo->hdelay >> 6) & 0x0c) |
- ((geo->sheight >> 4) & 0x30) |
- ((geo->vdelay >> 2) & 0xc0));
-
- 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("%d: capctl=%x lirq=%d top=%08llx/%08llx even=%08llx/%08llx\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("%d: risc main @ %08llx\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("%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: %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),
- 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: %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),
- &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;
-}
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */