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media: bttv: drop overlay support

Browse Source 
Destructive overlay support (i.e. where the video frame is DMA-ed
straight into a framebuffer) is effectively dead. It was a
necessary evil in the early days when computers were not fast enough
to copy SDTV video frames around, but today that's no longer a problem.

It requires access to the framebuffer memory, which is a bad idea and
very hard to do safely. In addition, in drm it is today almost
impossible to get hold of the framebuffer address.

So drop support for this.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Hans Verkuil 2023-03-02 13:57:25 +01:00 committed by Mauro Carvalho Chehab
parent 50a5677d53
commit 3c161e82df
7 changed files with 11 additions and 763 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/pci/bt8xx/Kconfig
View File

@ -15,7 +15,7 @@ config VIDEO_BT848
select RADIO_ADAPTERS
select RADIO_TEA575X
help
Support for BT848 based frame grabber/overlay boards. This includes
Support for BT848 based frame grabber boards. This includes
the Miro, Hauppauge and STB boards. Please read the material in
<file:Documentation/admin-guide/media/bttv.rst> for more information.

153
drivers/media/pci/bt8xx/btcx-risc.c
View File

@ -75,156 +75,3 @@ int btcx_riscmem_alloc(struct pci_dev *pci,
}
return 0;
}
/* ---------------------------------------------------------- */
/* screen overlay helpers */
int
btcx_screen_clips(int swidth, int sheight, struct v4l2_rect *win,
struct v4l2_clip *clips, unsigned int n)
{
if (win->left < 0) {
/* left */
clips[n].c.left = 0;
clips[n].c.top = 0;
clips[n].c.width = -win->left;
clips[n].c.height = win->height;
n++;
}
if (win->left + win->width > swidth) {
/* right */
clips[n].c.left = swidth - win->left;
clips[n].c.top = 0;
clips[n].c.width = win->width - clips[n].c.left;
clips[n].c.height = win->height;
n++;
}
if (win->top < 0) {
/* top */
clips[n].c.left = 0;
clips[n].c.top = 0;
clips[n].c.width = win->width;
clips[n].c.height = -win->top;
n++;
}
if (win->top + win->height > sheight) {
/* bottom */
clips[n].c.left = 0;
clips[n].c.top = sheight - win->top;
clips[n].c.width = win->width;
clips[n].c.height = win->height - clips[n].c.top;
n++;
}
return n;
}
int
btcx_align(struct v4l2_rect *win, struct v4l2_clip *clips, unsigned int n, int mask)
{
s32 nx,nw,dx;
unsigned int i;
/* fixup window */
nx = (win->left + mask) & ~mask;
nw = (win->width) & ~mask;
if (nx + nw > win->left + win->width)
nw -= mask+1;
dx = nx - win->left;
win->left = nx;
win->width = nw;
dprintk("btcx: window align %dx%d+%d+%d [dx=%d]\n",
win->width, win->height, win->left, win->top, dx);
/* fixup clips */
for (i = 0; i < n; i++) {
nx = (clips[i].c.left-dx) & ~mask;
nw = (clips[i].c.width) & ~mask;
if (nx + nw < clips[i].c.left-dx + clips[i].c.width)
nw += mask+1;
clips[i].c.left = nx;
clips[i].c.width = nw;
dprintk("btcx: clip align %dx%d+%d+%d\n",
clips[i].c.width, clips[i].c.height,
clips[i].c.left, clips[i].c.top);
}
return 0;
}
void
btcx_sort_clips(struct v4l2_clip *clips, unsigned int nclips)
{
int i,j,n;
if (nclips < 2)
return;
for (i = nclips-2; i >= 0; i--) {
for (n = 0, j = 0; j <= i; j++) {
if (clips[j].c.left > clips[j+1].c.left) {
swap(clips[j], clips[j + 1]);
n++;
}
}
if (0 == n)
break;
}
}
void
btcx_calc_skips(int line, int width, int *maxy,
struct btcx_skiplist *skips, unsigned int *nskips,
const struct v4l2_clip *clips, unsigned int nclips)
{
unsigned int clip,skip;
int end, maxline;
skip=0;
maxline = 9999;
for (clip = 0; clip < nclips; clip++) {
/* sanity checks */
if (clips[clip].c.left + clips[clip].c.width <= 0)
continue;
if (clips[clip].c.left > (signed)width)
break;
/* vertical range */
if (line > clips[clip].c.top+clips[clip].c.height-1)
continue;
if (line < clips[clip].c.top) {
if (maxline > clips[clip].c.top-1)
maxline = clips[clip].c.top-1;
continue;
}
if (maxline > clips[clip].c.top+clips[clip].c.height-1)
maxline = clips[clip].c.top+clips[clip].c.height-1;
/* horizontal range */
if (0 == skip || clips[clip].c.left > skips[skip-1].end) {
/* new one */
skips[skip].start = clips[clip].c.left;
if (skips[skip].start < 0)
skips[skip].start = 0;
skips[skip].end = clips[clip].c.left + clips[clip].c.width;
if (skips[skip].end > width)
skips[skip].end = width;
skip++;
} else {
/* overlaps -- expand last one */
end = clips[clip].c.left + clips[clip].c.width;
if (skips[skip-1].end < end)
skips[skip-1].end = end;
if (skips[skip-1].end > width)
skips[skip-1].end = width;
}
}
*nskips = skip;
*maxy = maxline;
if (btcx_debug) {
dprintk("btcx: skips line %d-%d:", line, maxline);
for (skip = 0; skip < *nskips; skip++) {
pr_cont(" %d-%d", skips[skip].start, skips[skip].end);
}
pr_cont("\n");
}
}

9
drivers/media/pci/bt8xx/btcx-risc.h
View File

@ -16,12 +16,3 @@ int btcx_riscmem_alloc(struct pci_dev *pci,
unsigned int size);
void btcx_riscmem_free(struct pci_dev *pci,
struct btcx_riscmem *risc);
int btcx_screen_clips(int swidth, int sheight, struct v4l2_rect *win,
struct v4l2_clip *clips, unsigned int n);
int btcx_align(struct v4l2_rect *win, struct v4l2_clip *clips,
unsigned int n, int mask);
void btcx_sort_clips(struct v4l2_clip *clips, unsigned int nclips);
void btcx_calc_skips(int line, int width, int *maxy,
struct btcx_skiplist *skips, unsigned int *nskips,
const struct v4l2_clip *clips, unsigned int nclips);

15
drivers/media/pci/bt8xx/bttv-cards.c
View File

@ -81,7 +81,6 @@ static int pvr_boot(struct bttv *btv);
static unsigned int triton1;
static unsigned int vsfx;
static unsigned int latency = UNSET;
int no_overlay=-1;
static unsigned int card[BTTV_MAX] = { [ 0 ... (BTTV_MAX-1) ] = UNSET };
static unsigned int pll[BTTV_MAX] = { [ 0 ... (BTTV_MAX-1) ] = UNSET };
@ -99,7 +98,6 @@ static unsigned int audiomux[5] = { [ 0 ... 4 ] = UNSET };
/* insmod options */
module_param(triton1, int, 0444);
module_param(vsfx, int, 0444);
module_param(no_overlay, int, 0444);
module_param(latency, int, 0444);
module_param(gpiomask, int, 0444);
module_param(audioall, int, 0444);
@ -127,7 +125,6 @@ MODULE_PARM_DESC(audiodev, "specify audio device:\n"
"\t\t 2 = tda7432\n"
"\t\t 3 = tvaudio");
MODULE_PARM_DESC(saa6588, "if 1, then load the saa6588 RDS module, default (0) is to use the card definition.");
MODULE_PARM_DESC(no_overlay, "allow override overlay default (0 disables, 1 enables) [some VIA/SIS chipsets are known to have problem with overlay]");
/* I2C addresses list */
@ -4869,11 +4866,8 @@ static void gv800s_init(struct bttv *btv)
void __init bttv_check_chipset(void)
{
int pcipci_fail = 0;
struct pci_dev *dev = NULL;
if (pci_pci_problems & (PCIPCI_FAIL|PCIAGP_FAIL)) /* should check if target is AGP */
pcipci_fail = 1;
if (pci_pci_problems & (PCIPCI_TRITON|PCIPCI_NATOMA|PCIPCI_VIAETBF))
triton1 = 1;
if (pci_pci_problems & PCIPCI_VSFX)
@ -4889,15 +4883,6 @@ void __init bttv_check_chipset(void)
pr_info("Host bridge needs ETBF enabled\n");
if (vsfx)
pr_info("Host bridge needs VSFX enabled\n");
if (pcipci_fail) {
pr_info("bttv and your chipset may not work together\n");
if (!no_overlay) {
pr_info("overlay will be disabled\n");
no_overlay = 1;
} else {
pr_info("overlay forced. Use this option at your own risk.\n");
}
}
if (UNSET != latency)
pr_info("pci latency fixup [%d]\n", latency);
while ((dev = pci_get_device(PCI_VENDOR_ID_INTEL,

436
drivers/media/pci/bt8xx/bttv-driver.c
View File

@ -624,20 +624,14 @@ static const unsigned int FORMATS = ARRAY_SIZE(formats);
VIDIOC_QBUF 1) bttv_release
VIDIOCMCAPTURE 1)
OVERLAY VIDIOCCAPTURE on VIDIOCCAPTURE off
VIDIOC_OVERLAY on VIDIOC_OVERLAY off
3) bttv_release
VBI VIDIOC_STREAMON VIDIOC_STREAMOFF
VIDIOC_QBUF 1) bttv_release
bttv_read, bttv_poll 1) 4)
bttv_read, bttv_poll 1) 3)
1) The resource must be allocated when we enter buffer prepare functions
and remain allocated while buffers are in the DMA queue.
2) This is a single frame read.
3) VIDIOC_S_FBUF and VIDIOC_S_FMT (OVERLAY) still work when
RESOURCE_OVERLAY is allocated.
4) This is a continuous read, implies VIDIOC_STREAMON.
3) This is a continuous read, implies VIDIOC_STREAMON.
Note this driver permits video input and standard changes regardless if
resources are allocated.
@ -645,8 +639,7 @@ static const unsigned int FORMATS = ARRAY_SIZE(formats);
#define VBI_RESOURCES (RESOURCE_VBI)
#define VIDEO_RESOURCES (RESOURCE_VIDEO_READ | \
RESOURCE_VIDEO_STREAM | \
RESOURCE_OVERLAY)
RESOURCE_VIDEO_STREAM)
static
int check_alloc_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bit)
@ -1491,37 +1484,6 @@ format_by_fourcc(int fourcc)
return NULL;
}
/* ----------------------------------------------------------------------- */
/* misc helpers */
static int
bttv_switch_overlay(struct bttv *btv, struct bttv_fh *fh,
struct bttv_buffer *new)
{
struct bttv_buffer *old;
unsigned long flags;
dprintk("switch_overlay: enter [new=%p]\n", new);
if (new)
new->vb.state = VIDEOBUF_DONE;
spin_lock_irqsave(&btv->s_lock,flags);
old = btv->screen;
btv->screen = new;
btv->loop_irq |= 1;
bttv_set_dma(btv, 0x03);
spin_unlock_irqrestore(&btv->s_lock,flags);
if (NULL != old) {
dprintk("switch_overlay: old=%p state is %d\n",
old, old->vb.state);
bttv_dma_free(&fh->cap,btv, old);
kfree(old);
}
if (NULL == new)
free_btres_lock(btv,fh,RESOURCE_OVERLAY);
dprintk("switch_overlay: done\n");
return 0;
}
/* ----------------------------------------------------------------------- */
/* video4linux (1) interface */
@ -2045,150 +2007,6 @@ limit_scaled_size_lock (struct bttv_fh * fh,
return rc;
}
/* Returns an error if the given overlay window dimensions are not
possible with the current cropping parameters. If adjust_size is
TRUE the function may adjust the window width and/or height
instead, however it always rounds the horizontal position and
width as btcx_align() does. If adjust_crop is TRUE the function
may also adjust the current cropping parameters to get closer
to the desired window size. */
static int
verify_window_lock(struct bttv_fh *fh, struct v4l2_window *win,
int adjust_size, int adjust_crop)
{
enum v4l2_field field;
unsigned int width_mask;
if (win->w.width < 48)
win->w.width = 48;
if (win->w.height < 32)
win->w.height = 32;
if (win->clipcount > 2048)
win->clipcount = 2048;
win->chromakey = 0;
win->global_alpha = 0;
field = win->field;
switch (field) {
case V4L2_FIELD_TOP:
case V4L2_FIELD_BOTTOM:
case V4L2_FIELD_INTERLACED:
break;
default:
field = V4L2_FIELD_ANY;
break;
}
if (V4L2_FIELD_ANY == field) {
__s32 height2;
height2 = fh->btv->crop[!!fh->do_crop].rect.height >> 1;
field = (win->w.height > height2)
? V4L2_FIELD_INTERLACED
: V4L2_FIELD_TOP;
}
win->field = field;
if (NULL == fh->ovfmt)
return -EINVAL;
/* 4-byte alignment. */
width_mask = ~0;
switch (fh->ovfmt->depth) {
case 8:
case 24:
width_mask = ~3;
break;
case 16:
width_mask = ~1;
break;
case 32:
break;
default:
BUG();
}
win->w.width -= win->w.left & ~width_mask;
win->w.left = (win->w.left - width_mask - 1) & width_mask;
return limit_scaled_size_lock(fh, &win->w.width, &win->w.height,
field, width_mask,
/* width_bias: round down */ 0,
adjust_size, adjust_crop);
}
static int setup_window_lock(struct bttv_fh *fh, struct bttv *btv,
struct v4l2_window *win, int fixup)
{
struct v4l2_clip *clips = NULL;
int n,size,retval = 0;
if (NULL == fh->ovfmt)
return -EINVAL;
if (!(fh->ovfmt->flags & FORMAT_FLAGS_PACKED))
return -EINVAL;
retval = verify_window_lock(fh, win,
/* adjust_size */ fixup,
/* adjust_crop */ fixup);
if (0 != retval)
return retval;
/* copy clips -- luckily v4l1 + v4l2 are binary
compatible here ...*/
n = win->clipcount;
size = sizeof(*clips)*(n+4);
clips = kmalloc(size,GFP_KERNEL);
if (NULL == clips)
return -ENOMEM;
if (n > 0)
memcpy(clips, win->clips, sizeof(struct v4l2_clip) * n);
/* clip against screen */
if (NULL != btv->fbuf.base)
n = btcx_screen_clips(btv->fbuf.fmt.width, btv->fbuf.fmt.height,
&win->w, clips, n);
btcx_sort_clips(clips,n);
/* 4-byte alignments */
switch (fh->ovfmt->depth) {
case 8:
case 24:
btcx_align(&win->w, clips, n, 3);
break;
case 16:
btcx_align(&win->w, clips, n, 1);
break;
case 32:
/* no alignment fixups needed */
break;
default:
BUG();
}
kfree(fh->ov.clips);
fh->ov.clips = clips;
fh->ov.nclips = n;
fh->ov.w = win->w;
fh->ov.field = win->field;
fh->ov.setup_ok = 1;
btv->init.ov.w.width = win->w.width;
btv->init.ov.w.height = win->w.height;
btv->init.ov.field = win->field;
/* update overlay if needed */
retval = 0;
if (check_btres(fh, RESOURCE_OVERLAY)) {
struct bttv_buffer *new;
new = videobuf_sg_alloc(sizeof(*new));
new->crop = btv->crop[!!fh->do_crop].rect;
bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
retval = bttv_switch_overlay(btv,fh,new);
}
return retval;
}
/* ----------------------------------------------------------------------- */
static struct videobuf_queue* bttv_queue(struct bttv_fh *fh)
@ -2270,17 +2088,6 @@ static int bttv_g_fmt_vid_cap(struct file *file, void *priv,
return 0;
}
static int bttv_g_fmt_vid_overlay(struct file *file, void *priv,
struct v4l2_format *f)
{
struct bttv_fh *fh = priv;
f->fmt.win.w = fh->ov.w;
f->fmt.win.field = fh->ov.field;
return 0;
}
static void bttv_get_width_mask_vid_cap(const struct bttv_format *fmt,
unsigned int *width_mask,
unsigned int *width_bias)
@ -2352,17 +2159,6 @@ static int bttv_try_fmt_vid_cap(struct file *file, void *priv,
return 0;
}
static int bttv_try_fmt_vid_overlay(struct file *file, void *priv,
struct v4l2_format *f)
{
struct bttv_fh *fh = priv;
verify_window_lock(fh, &f->fmt.win,
/* adjust_size */ 1,
/* adjust_crop */ 0);
return 0;
}
static int bttv_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
@ -2410,20 +2206,6 @@ static int bttv_s_fmt_vid_cap(struct file *file, void *priv,
return 0;
}
static int bttv_s_fmt_vid_overlay(struct file *file, void *priv,
struct v4l2_format *f)
{
struct bttv_fh *fh = priv;
struct bttv *btv = fh->btv;
if (no_overlay > 0) {
pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
return -EINVAL;
}
return setup_window_lock(fh, btv, &f->fmt.win, 1);
}
static int bttv_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
@ -2437,8 +2219,6 @@ static int bttv_querycap(struct file *file, void *priv,
strscpy(cap->card, btv->video_dev.name, sizeof(cap->card));
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
if (no_overlay <= 0)
cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY;
if (video_is_registered(&btv->vbi_dev))
cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
if (video_is_registered(&btv->radio_dev)) {
@ -2458,7 +2238,8 @@ static int bttv_querycap(struct file *file, void *priv,
return 0;
}
static int bttv_enum_fmt_cap_ovr(struct v4l2_fmtdesc *f)
static int bttv_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
int index = -1, i;
@ -2473,162 +2254,9 @@ static int bttv_enum_fmt_cap_ovr(struct v4l2_fmtdesc *f)
f->pixelformat = formats[i].fourcc;
return i;
}
static int bttv_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
int rc = bttv_enum_fmt_cap_ovr(f);
if (rc < 0)
return rc;
return 0;
}
static int bttv_enum_fmt_vid_overlay(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
int rc;
if (no_overlay > 0) {
pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
return -EINVAL;
}
rc = bttv_enum_fmt_cap_ovr(f);
if (rc < 0)
return rc;
if (!(formats[rc].flags & FORMAT_FLAGS_PACKED))
return -EINVAL;
return 0;
}
static int bttv_g_fbuf(struct file *file, void *f,
struct v4l2_framebuffer *fb)
{
struct bttv_fh *fh = f;
struct bttv *btv = fh->btv;
*fb = btv->fbuf;
fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
fb->flags = V4L2_FBUF_FLAG_PRIMARY;
if (fh->ovfmt)
fb->fmt.pixelformat = fh->ovfmt->fourcc;
return 0;
}
static int bttv_overlay(struct file *file, void *f, unsigned int on)
{
struct bttv_fh *fh = f;
struct bttv *btv = fh->btv;
struct bttv_buffer *new;
int retval = 0;
if (on) {
/* verify args */
if (unlikely(!btv->fbuf.base)) {
return -EINVAL;
}
if (unlikely(!fh->ov.setup_ok)) {
dprintk("%d: overlay: !setup_ok\n", btv->c.nr);
retval = -EINVAL;
}
if (retval)
return retval;
}
if (!check_alloc_btres_lock(btv, fh, RESOURCE_OVERLAY))
return -EBUSY;
if (on) {
fh->ov.tvnorm = btv->tvnorm;
new = videobuf_sg_alloc(sizeof(*new));
new->crop = btv->crop[!!fh->do_crop].rect;
bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
} else {
new = NULL;
}
/* switch over */
retval = bttv_switch_overlay(btv, fh, new);
return retval;
}
static int bttv_s_fbuf(struct file *file, void *f,
const struct v4l2_framebuffer *fb)
{
struct bttv_fh *fh = f;
struct bttv *btv = fh->btv;
const struct bttv_format *fmt;
int retval;
if (!capable(CAP_SYS_ADMIN) &&
!capable(CAP_SYS_RAWIO))
return -EPERM;
/* check args */
fmt = format_by_fourcc(fb->fmt.pixelformat);
if (NULL == fmt)
return -EINVAL;
if (0 == (fmt->flags & FORMAT_FLAGS_PACKED))
return -EINVAL;
retval = -EINVAL;
if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
__s32 width = fb->fmt.width;
__s32 height = fb->fmt.height;
retval = limit_scaled_size_lock(fh, &width, &height,
V4L2_FIELD_INTERLACED,
/* width_mask */ ~3,
/* width_bias */ 2,
/* adjust_size */ 0,
/* adjust_crop */ 0);
if (0 != retval)
return retval;
}
/* ok, accept it */
btv->fbuf.base = fb->base;
btv->fbuf.fmt.width = fb->fmt.width;
btv->fbuf.fmt.height = fb->fmt.height;
if (0 != fb->fmt.bytesperline)
btv->fbuf.fmt.bytesperline = fb->fmt.bytesperline;
else
btv->fbuf.fmt.bytesperline = btv->fbuf.fmt.width*fmt->depth/8;
retval = 0;
fh->ovfmt = fmt;
btv->init.ovfmt = fmt;
if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
fh->ov.w.left = 0;
fh->ov.w.top = 0;
fh->ov.w.width = fb->fmt.width;
fh->ov.w.height = fb->fmt.height;
btv->init.ov.w.width = fb->fmt.width;
btv->init.ov.w.height = fb->fmt.height;
kfree(fh->ov.clips);
fh->ov.clips = NULL;
fh->ov.nclips = 0;
if (check_btres(fh, RESOURCE_OVERLAY)) {
struct bttv_buffer *new;
new = videobuf_sg_alloc(sizeof(*new));
new->crop = btv->crop[!!fh->do_crop].rect;
bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
retval = bttv_switch_overlay(btv, fh, new);
}
}
return retval;
}
static int bttv_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
@ -2748,8 +2376,7 @@ static int bttv_g_selection(struct file *file, void *f, struct v4l2_selection *s
struct bttv_fh *fh = f;
struct bttv *btv = fh->btv;
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
sel->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
switch (sel->target) {
@ -2786,8 +2413,7 @@ static int bttv_s_selection(struct file *file, void *f, struct v4l2_selection *s
__s32 b_right;
__s32 b_bottom;
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
sel->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (sel->target != V4L2_SEL_TGT_CROP)
@ -2977,7 +2603,6 @@ static int bttv_open(struct file *file)
v4l2_fh_init(&fh->fh, vdev);
fh->type = type;
fh->ov.setup_ok = 0;
videobuf_queue_sg_init(&fh->cap, &bttv_video_qops,
&btv->c.pci->dev, &btv->s_lock,
@ -3021,10 +2646,6 @@ static int bttv_release(struct file *file)
struct bttv_fh *fh = file->private_data;
struct bttv *btv = fh->btv;
/* turn off overlay */
if (check_btres(fh, RESOURCE_OVERLAY))
bttv_switch_overlay(btv,fh,NULL);
/* stop video capture */
if (check_btres(fh, RESOURCE_VIDEO_STREAM)) {
videobuf_streamoff(&fh->cap);
@ -3090,10 +2711,6 @@ static const struct v4l2_ioctl_ops bttv_ioctl_ops = {
.vidioc_g_fmt_vid_cap = bttv_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = bttv_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = bttv_s_fmt_vid_cap,
.vidioc_enum_fmt_vid_overlay = bttv_enum_fmt_vid_overlay,
.vidioc_g_fmt_vid_overlay = bttv_g_fmt_vid_overlay,
.vidioc_try_fmt_vid_overlay = bttv_try_fmt_vid_overlay,
.vidioc_s_fmt_vid_overlay = bttv_s_fmt_vid_overlay,
.vidioc_g_fmt_vbi_cap = bttv_g_fmt_vbi_cap,
.vidioc_try_fmt_vbi_cap = bttv_try_fmt_vbi_cap,
.vidioc_s_fmt_vbi_cap = bttv_s_fmt_vbi_cap,
@ -3113,9 +2730,6 @@ static const struct v4l2_ioctl_ops bttv_ioctl_ops = {
.vidioc_s_tuner = bttv_s_tuner,
.vidioc_g_selection = bttv_g_selection,
.vidioc_s_selection = bttv_s_selection,
.vidioc_g_fbuf = bttv_g_fbuf,
.vidioc_s_fbuf = bttv_s_fbuf,
.vidioc_overlay = bttv_overlay,
.vidioc_g_parm = bttv_g_parm,
.vidioc_g_frequency = bttv_g_frequency,
.vidioc_s_frequency = bttv_s_frequency,
@ -3385,9 +2999,6 @@ static void bttv_print_riscaddr(struct bttv *btv)
? (unsigned long long)btv->curr.top->top.dma : 0,
btv->curr.bottom
? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
pr_info(" scr : o=%08llx e=%08llx\n",
btv->screen ? (unsigned long long)btv->screen->top.dma : 0,
btv->screen ? (unsigned long long)btv->screen->bottom.dma : 0);
bttv_risc_disasm(btv, &btv->main);
}
@ -3508,28 +3119,9 @@ bttv_irq_next_video(struct bttv *btv, struct bttv_buffer_set *set)
}
}
/* screen overlay ? */
if (NULL != btv->screen) {
if (V4L2_FIELD_HAS_BOTH(btv->screen->vb.field)) {
if (NULL == set->top && NULL == set->bottom) {
set->top = btv->screen;
set->bottom = btv->screen;
}
} else {
if (V4L2_FIELD_TOP == btv->screen->vb.field &&
NULL == set->top) {
set->top = btv->screen;
}
if (V4L2_FIELD_BOTTOM == btv->screen->vb.field &&
NULL == set->bottom) {
set->bottom = btv->screen;
}
}
}
dprintk("%d: next set: top=%p bottom=%p [screen=%p,irq=%d,%d]\n",
dprintk("%d: next set: top=%p bottom=%p [irq=%d,%d]\n",
btv->c.nr, set->top, set->bottom,
btv->screen, set->frame_irq, set->top_irq);
set->frame_irq, set->top_irq);
return 0;
}
@ -3883,17 +3475,12 @@ static void bttv_unregister_video(struct bttv *btv)
/* register video4linux devices */
static int bttv_register_video(struct bttv *btv)
{
if (no_overlay > 0)
pr_notice("Overlay support disabled\n");
/* video */
vdev_init(btv, &btv->video_dev, &bttv_video_template, "video");
btv->video_dev.device_caps = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
if (btv->tuner_type != TUNER_ABSENT)
btv->video_dev.device_caps |= V4L2_CAP_TUNER;
if (no_overlay <= 0)
btv->video_dev.device_caps |= V4L2_CAP_VIDEO_OVERLAY;
if (video_register_device(&btv->video_dev, VFL_TYPE_VIDEO,
video_nr[btv->c.nr]) < 0)
@ -4084,14 +3671,9 @@ static int bttv_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
/* fill struct bttv with some useful defaults */
btv->init.btv = btv;
btv->init.ov.w.width = 320;
btv->init.ov.w.height = 240;
btv->init.fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
btv->init.width = 320;
btv->init.height = 240;
btv->init.ov.w.width = 320;
btv->init.ov.w.height = 240;
btv->init.ov.field = V4L2_FIELD_INTERLACED;
btv->input = 0;
v4l2_ctrl_new_std(hdl, &bttv_ctrl_ops,

131
drivers/media/pci/bt8xx/bttv-risc.c
View File

@ -231,95 +231,6 @@ bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc,
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 */
skips = kmalloc_array(ov->nclips, sizeof(*skips),GFP_KERNEL);
if (NULL == skips)
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
@ -848,45 +759,3 @@ bttv_buffer_risc(struct bttv *btv, struct bttv_buffer *buf)
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;
}

28
drivers/media/pci/bt8xx/bttvp.h
View File

@ -50,7 +50,6 @@
#define RISC_SLOT_E_FIELD 12
#define RISC_SLOT_LOOP 14
#define RESOURCE_OVERLAY 1
#define RESOURCE_VIDEO_STREAM 2
#define RESOURCE_VBI 4
#define RESOURCE_VIDEO_READ 8
@ -165,15 +164,6 @@ struct bttv_buffer_set {
unsigned int frame_irq;
};
struct bttv_overlay {
unsigned int tvnorm;
struct v4l2_rect w;
enum v4l2_field field;
struct v4l2_clip *clips;
int nclips;
int setup_ok;
};
struct bttv_vbi_fmt {
struct v4l2_vbi_format fmt;
@ -216,10 +206,6 @@ struct bttv_fh {
int width;
int height;
/* video overlay */
const struct bttv_format *ovfmt;
struct bttv_overlay ov;
/* Application called VIDIOC_S_SELECTION. */
int do_crop;
@ -256,12 +242,6 @@ int bttv_buffer_activate_vbi(struct bttv *btv,
void bttv_dma_free(struct videobuf_queue *q, struct bttv *btv,
struct bttv_buffer *buf);
/* overlay handling */
int bttv_overlay_risc(struct bttv *btv, struct bttv_overlay *ov,
const struct bttv_format *fmt,
struct bttv_buffer *buf);
/* ---------------------------------------------------------- */
/* bttv-vbi.c */
@ -278,11 +258,6 @@ extern struct bus_type bttv_sub_bus_type;
int bttv_sub_add_device(struct bttv_core *core, char *name);
int bttv_sub_del_devices(struct bttv_core *core);
/* ---------------------------------------------------------- */
/* bttv-cards.c */
extern int no_overlay;
/* ---------------------------------------------------------- */
/* bttv-input.c */
@ -454,7 +429,6 @@ struct bttv {
- must acquire s_lock before changing these
- only the irq handler is supported to touch top + bottom + vcurr */
struct btcx_riscmem main;
struct bttv_buffer *screen; /* overlay */
struct list_head capture; /* video capture queue */
struct list_head vcapture; /* vbi capture queue */
struct bttv_buffer_set curr; /* active buffers */
@ -479,7 +453,7 @@ struct bttv {
/* used to make dvb-bt8xx autoloadable */
struct work_struct request_module_wk;
/* Default (0) and current (1) video capturing and overlay
/* Default (0) and current (1) video capturing
cropping parameters in bttv_tvnorm.cropcap units. Protected
by bttv.lock. */
struct bttv_crop crop[2];