2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
|
|
|
|
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 +
|
V4L/DVB (3394): Bttv: correct bttv_risc_packed buffer size
This patch fixes the strange crashes I was seeing after using
bttv card, caused by a buffer overflow in bttv_risc_packed.
The instruction buffer size calculation contains two errors:
(a) a non-zero padding value can push the start of the next bpl
section to just before a page border, leading to more scanline
splits and thus additional instructions.
(b) the first DMA region can be smaller than one page, so there can
be a scanline split even if bpl*lines is smaller than PAGE_SIZE.
For example, consider the case where offset is 0, bpl is 2, padding
is 4094, lines is smaller than 2048, the first DMA region has size 1
and all others have size PAGE_SIZE, assumed to equal 4096. Then
all bpl regions cross page borders and the number of instructions
written is 2*lines+2, rather than lines+2 (the current estimate).
With this patch the number of instructions for this example is
estimated to be 2*lines+3.
Also, the BUG_ON that was supposed to catch buffer overflows contained
a thinko causing it fire only if the buffer was overrun by a factor of
16 or more, so it fixes the the BUG_ON's (using sizeof rather than "4").
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-02-26 20:09:48 -07:00
|
|
|
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 = 1 + ((bpl + padding) * lines) / PAGE_SIZE + lines;
|
2005-04-16 16:20:36 -06:00
|
|
|
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 */
|
2005-11-08 22:37:43 -07:00
|
|
|
*(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
|
2005-04-16 16:20:36 -06:00
|
|
|
BT848_RISC_EOL|bpl);
|
2005-11-08 22:37:43 -07:00
|
|
|
*(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
|
|
|
|
offset+=bpl;
|
2005-04-16 16:20:36 -06:00
|
|
|
} else {
|
|
|
|
/* scanline needs to be splitted */
|
2005-11-08 22:37:43 -07:00
|
|
|
todo = bpl;
|
|
|
|
*(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
|
2005-04-16 16:20:36 -06:00
|
|
|
(sg_dma_len(sg)-offset));
|
2005-11-08 22:37:43 -07:00
|
|
|
*(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
|
|
|
|
todo -= (sg_dma_len(sg)-offset);
|
|
|
|
offset = 0;
|
|
|
|
sg++;
|
|
|
|
while (todo > sg_dma_len(sg)) {
|
2005-11-08 22:37:45 -07:00
|
|
|
*(rp++)=cpu_to_le32(BT848_RISC_WRITE|
|
2005-04-16 16:20:36 -06:00
|
|
|
sg_dma_len(sg));
|
2005-11-08 22:37:45 -07:00
|
|
|
*(rp++)=cpu_to_le32(sg_dma_address(sg));
|
2005-04-16 16:20:36 -06:00
|
|
|
todo -= sg_dma_len(sg);
|
|
|
|
sg++;
|
|
|
|
}
|
2005-11-08 22:37:43 -07:00
|
|
|
*(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL|
|
2005-04-16 16:20:36 -06:00
|
|
|
todo);
|
|
|
|
*(rp++)=cpu_to_le32(sg_dma_address(sg));
|
|
|
|
offset += todo;
|
|
|
|
}
|
|
|
|
offset += padding;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* save pointer to jmp instruction address */
|
|
|
|
risc->jmp = rp;
|
V4L/DVB (3394): Bttv: correct bttv_risc_packed buffer size
This patch fixes the strange crashes I was seeing after using
bttv card, caused by a buffer overflow in bttv_risc_packed.
The instruction buffer size calculation contains two errors:
(a) a non-zero padding value can push the start of the next bpl
section to just before a page border, leading to more scanline
splits and thus additional instructions.
(b) the first DMA region can be smaller than one page, so there can
be a scanline split even if bpl*lines is smaller than PAGE_SIZE.
For example, consider the case where offset is 0, bpl is 2, padding
is 4094, lines is smaller than 2048, the first DMA region has size 1
and all others have size PAGE_SIZE, assumed to equal 4096. Then
all bpl regions cross page borders and the number of instructions
written is 2*lines+2, rather than lines+2 (the current estimate).
With this patch the number of instructions for this example is
estimated to be 2*lines+3.
Also, the BUG_ON that was supposed to catch buffer overflows contained
a thinko causing it fire only if the buffer was overrun by a factor of
16 or more, so it fixes the the BUG_ON's (using sizeof rather than "4").
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-02-26 20:09:48 -07:00
|
|
|
BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
|
2005-04-16 16:20:36 -06:00
|
|
|
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 */
|
2005-11-08 22:37:43 -07:00
|
|
|
*(rp++)=cpu_to_le32(ri | ylen);
|
|
|
|
*(rp++)=cpu_to_le32(((ylen >> hshift) << 16) |
|
2005-04-16 16:20:36 -06:00
|
|
|
(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;
|
V4L/DVB (3394): Bttv: correct bttv_risc_packed buffer size
This patch fixes the strange crashes I was seeing after using
bttv card, caused by a buffer overflow in bttv_risc_packed.
The instruction buffer size calculation contains two errors:
(a) a non-zero padding value can push the start of the next bpl
section to just before a page border, leading to more scanline
splits and thus additional instructions.
(b) the first DMA region can be smaller than one page, so there can
be a scanline split even if bpl*lines is smaller than PAGE_SIZE.
For example, consider the case where offset is 0, bpl is 2, padding
is 4094, lines is smaller than 2048, the first DMA region has size 1
and all others have size PAGE_SIZE, assumed to equal 4096. Then
all bpl regions cross page borders and the number of instructions
written is 2*lines+2, rather than lines+2 (the current estimate).
With this patch the number of instructions for this example is
estimated to be 2*lines+3.
Also, the BUG_ON that was supposed to catch buffer overflows contained
a thinko causing it fire only if the buffer was overrun by a factor of
16 or more, so it fixes the the BUG_ON's (using sizeof rather than "4").
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-02-26 20:09:48 -07:00
|
|
|
BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
|
2005-04-16 16:20:36 -06:00
|
|
|
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);
|
2006-03-09 07:20:14 -07:00
|
|
|
else
|
|
|
|
nskips = 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* 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;
|
V4L/DVB (3394): Bttv: correct bttv_risc_packed buffer size
This patch fixes the strange crashes I was seeing after using
bttv card, caused by a buffer overflow in bttv_risc_packed.
The instruction buffer size calculation contains two errors:
(a) a non-zero padding value can push the start of the next bpl
section to just before a page border, leading to more scanline
splits and thus additional instructions.
(b) the first DMA region can be smaller than one page, so there can
be a scanline split even if bpl*lines is smaller than PAGE_SIZE.
For example, consider the case where offset is 0, bpl is 2, padding
is 4094, lines is smaller than 2048, the first DMA region has size 1
and all others have size PAGE_SIZE, assumed to equal 4096. Then
all bpl regions cross page borders and the number of instructions
written is 2*lines+2, rather than lines+2 (the current estimate).
With this patch the number of instructions for this example is
estimated to be 2*lines+3.
Also, the BUG_ON that was supposed to catch buffer overflows contained
a thinko causing it fire only if the buffer was overrun by a factor of
16 or more, so it fixes the the BUG_ON's (using sizeof rather than "4").
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-02-26 20:09:48 -07:00
|
|
|
BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
|
2005-04-16 16:20:36 -06:00
|
|
|
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];
|
2005-11-08 22:37:43 -07:00
|
|
|
u32 xsf, sr;
|
2005-04-16 16:20:36 -06:00
|
|
|
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;
|
|
|
|
|
2005-11-08 22:37:43 -07:00
|
|
|
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;
|
2005-04-16 16:20:36 -06:00
|
|
|
geo->vtotal = tvnorm->vtotal;
|
|
|
|
|
2005-11-08 22:37:43 -07:00
|
|
|
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;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bttv_apply_geo(struct bttv *btv, struct bttv_geometry *geo, int odd)
|
|
|
|
{
|
2005-11-08 22:37:43 -07:00
|
|
|
int off = odd ? 0x80 : 0x00;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
if (geo->comb)
|
|
|
|
btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
|
|
|
|
else
|
|
|
|
btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
|
|
|
|
|
2005-11-08 22:37:43 -07:00
|
|
|
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);
|
2005-04-16 16:20:36 -06:00
|
|
|
btwrite(geo->vtotal>>8, BT848_VTOTAL_HI);
|
2005-11-08 22:37:43 -07:00
|
|
|
btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* ---------------------------------------------------------- */
|
|
|
|
/* 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);
|
|
|
|
}
|
2005-11-08 22:37:43 -07:00
|
|
|
btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
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;
|
2005-11-08 22:37:43 -07:00
|
|
|
btand(~3, BT848_GPIO_DMA_CTL);
|
2005-04-16 16:20:36 -06:00
|
|
|
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));
|
|
|
|
|
2005-11-08 22:37:43 -07:00
|
|
|
btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC |
|
2005-04-16 16:20:36 -06:00
|
|
|
BT848_FIFO_STATUS_VRO);
|
2005-11-08 22:37:43 -07:00
|
|
|
btv->main.cpu[9] = cpu_to_le32(0);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* bottom field */
|
2005-11-08 22:37:43 -07:00
|
|
|
btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP);
|
2005-04-16 16:20:36 -06:00
|
|
|
btv->main.cpu[11] = cpu_to_le32(btv->main.dma + (12<<2));
|
2005-11-08 22:37:43 -07:00
|
|
|
btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP);
|
2005-04-16 16:20:36 -06:00
|
|
|
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);
|
2005-11-08 22:37:43 -07:00
|
|
|
btv->main.cpu[15] = cpu_to_le32(btv->main.dma + (0<<2));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
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
|
2006-03-10 08:29:15 -07:00
|
|
|
bttv_dma_free(struct videobuf_queue *q,struct bttv *btv, struct bttv_buffer *buf)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2006-03-13 09:17:11 -07:00
|
|
|
BUG_ON(in_interrupt());
|
2005-04-16 16:20:36 -06:00
|
|
|
videobuf_waiton(&buf->vb,0,0);
|
2006-03-10 08:29:15 -07:00
|
|
|
videobuf_dma_unmap(q, &buf->vb.dma);
|
2005-04-16 16:20:36 -06:00
|
|
|
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:
|
|
|
|
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:
|
|
|
|
*/
|