xbits |= RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM;
/* is it free? */
- mutex_lock(&btv->lock);
if (btv->resources & xbits) {
/* no, someone else uses it */
goto fail;
/* it's free, grab it */
fh->resources |= bit;
btv->resources |= bit;
- mutex_unlock(&btv->lock);
return 1;
fail:
- mutex_unlock(&btv->lock);
return 0;
}
/* trying to free ressources not allocated by us ... */
printk("bttv: BUG! (btres)\n");
}
- mutex_lock(&btv->lock);
fh->resources &= ~bits;
btv->resources &= ~bits;
if (0 == (bits & VBI_RESOURCES))
disclaim_vbi_lines(btv);
-
- mutex_unlock(&btv->lock);
}
/* ----------------------------------------------------------------------- */
/* Make sure tvnorm and vbi_end remain consistent
until we're done. */
- mutex_lock(&btv->lock);
norm = btv->tvnorm;
/* In this mode capturing always starts at defrect.top
(default VDELAY), ignoring cropping parameters. */
if (btv->vbi_end > bttv_tvnorms[norm].cropcap.defrect.top) {
- mutex_unlock(&btv->lock);
return -EINVAL;
}
- mutex_unlock(&btv->lock);
-
c.rect = bttv_tvnorms[norm].cropcap.defrect;
} else {
- mutex_lock(&btv->lock);
-
norm = btv->tvnorm;
c = btv->crop[!!fh->do_crop];
- mutex_unlock(&btv->lock);
-
if (width < c.min_scaled_width ||
width > c.max_scaled_width ||
height < c.min_scaled_height)
unsigned int i;
int err;
- mutex_lock(&btv->lock);
err = v4l2_prio_check(&btv->prio, fh->prio);
if (err)
goto err;
set_tvnorm(btv, i);
err:
- mutex_unlock(&btv->lock);
return err;
}
struct bttv *btv = fh->btv;
int rc = 0;
- mutex_lock(&btv->lock);
if (i->index >= bttv_tvcards[btv->c.type].video_inputs) {
rc = -EINVAL;
goto err;
i->std = BTTV_NORMS;
err:
- mutex_unlock(&btv->lock);
return rc;
}
struct bttv_fh *fh = priv;
struct bttv *btv = fh->btv;
- mutex_lock(&btv->lock);
*i = btv->input;
- mutex_unlock(&btv->lock);
return 0;
}
int err;
- mutex_lock(&btv->lock);
err = v4l2_prio_check(&btv->prio, fh->prio);
if (unlikely(err))
goto err;
set_input(btv, i, btv->tvnorm);
err:
- mutex_unlock(&btv->lock);
return 0;
}
if (unlikely(0 != t->index))
return -EINVAL;
- mutex_lock(&btv->lock);
if (unlikely(btv->tuner_type == TUNER_ABSENT)) {
err = -EINVAL;
goto err;
btv->audio_mode_gpio(btv, t, 1);
err:
- mutex_unlock(&btv->lock);
return 0;
}
struct bttv_fh *fh = priv;
struct bttv *btv = fh->btv;
- mutex_lock(&btv->lock);
f->type = btv->radio_user ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
f->frequency = btv->freq;
- mutex_unlock(&btv->lock);
return 0;
}
if (unlikely(f->tuner != 0))
return -EINVAL;
- mutex_lock(&btv->lock);
err = v4l2_prio_check(&btv->prio, fh->prio);
if (unlikely(err))
goto err;
if (btv->has_matchbox && btv->radio_user)
tea5757_set_freq(btv, btv->freq);
err:
- mutex_unlock(&btv->lock);
return 0;
}
/* Make sure tvnorm, vbi_end and the current cropping parameters
remain consistent until we're done. */
- mutex_lock(&btv->lock);
b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
rc = 0; /* success */
fail:
- mutex_unlock(&btv->lock);
return rc;
}
if (V4L2_FIELD_ANY == field) {
__s32 height2;
- mutex_lock(&fh->btv->lock);
height2 = fh->btv->crop[!!fh->do_crop].rect.height >> 1;
- mutex_unlock(&fh->btv->lock);
field = (win->w.height > height2)
? V4L2_FIELD_INTERLACED
: V4L2_FIELD_TOP;
}
}
- mutex_lock(&fh->cap.vb_lock);
/* clip against screen */
if (NULL != btv->fbuf.base)
n = btcx_screen_clips(btv->fbuf.fmt.width, btv->fbuf.fmt.height,
fh->ov.field = win->field;
fh->ov.setup_ok = 1;
- /*
- * FIXME: btv is protected by btv->lock mutex, while btv->init
- * is protected by fh->cap.vb_lock. This seems to open the
- * possibility for some race situations. Maybe the better would
- * be to unify those locks or to use another way to store the
- * init values that will be consumed by videobuf callbacks
- */
btv->init.ov.w.width = win->w.width;
btv->init.ov.w.height = win->w.height;
btv->init.ov.field = win->field;
bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
retval = bttv_switch_overlay(btv,fh,new);
}
- mutex_unlock(&fh->cap.vb_lock);
return retval;
}
if (V4L2_FIELD_ANY == field) {
__s32 height2;
- mutex_lock(&btv->lock);
height2 = btv->crop[!!fh->do_crop].rect.height >> 1;
- mutex_unlock(&btv->lock);
field = (f->fmt.pix.height > height2)
? V4L2_FIELD_INTERLACED
: V4L2_FIELD_BOTTOM;
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
/* update our state informations */
- mutex_lock(&fh->cap.vb_lock);
fh->fmt = fmt;
fh->cap.field = f->fmt.pix.field;
fh->cap.last = V4L2_FIELD_NONE;
btv->init.fmt = fmt;
btv->init.width = f->fmt.pix.width;
btv->init.height = f->fmt.pix.height;
- mutex_unlock(&fh->cap.vb_lock);
return 0;
}
unsigned int i;
struct bttv_fh *fh = priv;
- mutex_lock(&fh->cap.vb_lock);
retval = __videobuf_mmap_setup(&fh->cap, gbuffers, gbufsize,
V4L2_MEMORY_MMAP);
if (retval < 0) {
- mutex_unlock(&fh->cap.vb_lock);
return retval;
}
for (i = 0; i < gbuffers; i++)
mbuf->offsets[i] = i * gbufsize;
- mutex_unlock(&fh->cap.vb_lock);
return 0;
}
#endif
int retval = 0;
if (on) {
- mutex_lock(&fh->cap.vb_lock);
/* verify args */
if (unlikely(!btv->fbuf.base)) {
- mutex_unlock(&fh->cap.vb_lock);
return -EINVAL;
}
if (unlikely(!fh->ov.setup_ok)) {
}
if (retval)
return retval;
- mutex_unlock(&fh->cap.vb_lock);
}
if (!check_alloc_btres_lock(btv, fh, RESOURCE_OVERLAY))
return -EBUSY;
- mutex_lock(&fh->cap.vb_lock);
if (on) {
fh->ov.tvnorm = btv->tvnorm;
new = videobuf_sg_alloc(sizeof(*new));
/* switch over */
retval = bttv_switch_overlay(btv, fh, new);
- mutex_unlock(&fh->cap.vb_lock);
return retval;
}
}
/* ok, accept it */
- mutex_lock(&fh->cap.vb_lock);
btv->fbuf.base = fb->base;
btv->fbuf.fmt.width = fb->fmt.width;
btv->fbuf.fmt.height = fb->fmt.height;
retval = bttv_switch_overlay(btv, fh, new);
}
}
- mutex_unlock(&fh->cap.vb_lock);
return retval;
}
c->id >= V4L2_CID_PRIVATE_LASTP1))
return -EINVAL;
- mutex_lock(&btv->lock);
if (!btv->volume_gpio && (c->id == V4L2_CID_AUDIO_VOLUME))
*c = no_ctl;
else {
*c = (NULL != ctrl) ? *ctrl : no_ctl;
}
- mutex_unlock(&btv->lock);
return 0;
}
struct bttv_fh *fh = f;
struct bttv *btv = fh->btv;
- mutex_lock(&btv->lock);
v4l2_video_std_frame_period(bttv_tvnorms[btv->tvnorm].v4l2_id,
&parm->parm.capture.timeperframe);
- mutex_unlock(&btv->lock);
return 0;
}
if (0 != t->index)
return -EINVAL;
- mutex_lock(&btv->lock);
t->rxsubchans = V4L2_TUNER_SUB_MONO;
bttv_call_all(btv, tuner, g_tuner, t);
strcpy(t->name, "Television");
if (btv->audio_mode_gpio)
btv->audio_mode_gpio(btv, t, 0);
- mutex_unlock(&btv->lock);
return 0;
}
struct bttv_fh *fh = f;
struct bttv *btv = fh->btv;
- mutex_lock(&btv->lock);
*p = v4l2_prio_max(&btv->prio);
- mutex_unlock(&btv->lock);
return 0;
}
struct bttv *btv = fh->btv;
int rc;
- mutex_lock(&btv->lock);
rc = v4l2_prio_change(&btv->prio, &fh->prio, prio);
- mutex_unlock(&btv->lock);
return rc;
}
cap->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
return -EINVAL;
- mutex_lock(&btv->lock);
*cap = bttv_tvnorms[btv->tvnorm].cropcap;
- mutex_unlock(&btv->lock);
return 0;
}
inconsistent with fh->width or fh->height and apps
do not expect a change here. */
- mutex_lock(&btv->lock);
crop->c = btv->crop[!!fh->do_crop].rect;
- mutex_unlock(&btv->lock);
return 0;
}
/* Make sure tvnorm, vbi_end and the current cropping
parameters remain consistent until we're done. Note
read() may change vbi_end in check_alloc_btres_lock(). */
- mutex_lock(&btv->lock);
retval = v4l2_prio_check(&btv->prio, fh->prio);
if (0 != retval) {
- mutex_unlock(&btv->lock);
return retval;
}
retval = -EBUSY;
if (locked_btres(fh->btv, VIDEO_RESOURCES)) {
- mutex_unlock(&btv->lock);
return retval;
}
b_top = max(b->top, btv->vbi_end);
if (b_top + 32 >= b_bottom) {
- mutex_unlock(&btv->lock);
return retval;
}
btv->crop[1] = c;
- mutex_unlock(&btv->lock);
-
fh->do_crop = 1;
- mutex_lock(&fh->cap.vb_lock);
-
if (fh->width < c.min_scaled_width) {
fh->width = c.min_scaled_width;
btv->init.width = c.min_scaled_width;
btv->init.height = c.max_scaled_height;
}
- mutex_unlock(&fh->cap.vb_lock);
-
return 0;
}
return videobuf_poll_stream(file, &fh->vbi, wait);
}
- mutex_lock(&fh->cap.vb_lock);
if (check_btres(fh,RESOURCE_VIDEO_STREAM)) {
/* streaming capture */
if (list_empty(&fh->cap.stream))
else
rc = 0;
err:
- mutex_unlock(&fh->cap.vb_lock);
return rc;
}
return -ENOMEM;
file->private_data = fh;
- /*
- * btv is protected by btv->lock mutex, while btv->init and other
- * streaming vars are protected by fh->cap.vb_lock. We need to take
- * care of both locks to avoid troubles. However, vb_lock is used also
- * inside videobuf, without calling buf->lock. So, it is a very bad
- * idea to hold both locks at the same time.
- * Let's first copy btv->init at fh, holding cap.vb_lock, and then work
- * with the rest of init, holding btv->lock.
- */
- mutex_lock(&fh->cap.vb_lock);
*fh = btv->init;
- mutex_unlock(&fh->cap.vb_lock);
fh->type = type;
fh->ov.setup_ok = 0;
- mutex_lock(&btv->lock);
v4l2_prio_open(&btv->prio, &fh->prio);
videobuf_queue_sg_init(&fh->cap, &bttv_video_qops,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct bttv_buffer),
- fh, NULL);
+ fh, &btv->lock);
videobuf_queue_sg_init(&fh->vbi, &bttv_vbi_qops,
&btv->c.pci->dev, &btv->s_lock,
V4L2_BUF_TYPE_VBI_CAPTURE,
V4L2_FIELD_SEQ_TB,
sizeof(struct bttv_buffer),
- fh, NULL);
+ fh, &btv->lock);
set_tvnorm(btv,btv->tvnorm);
set_input(btv, btv->input, btv->tvnorm);
bttv_vbi_fmt_reset(&fh->vbi_fmt, btv->tvnorm);
bttv_field_count(btv);
- mutex_unlock(&btv->lock);
return 0;
}
struct bttv_fh *fh = file->private_data;
struct bttv *btv = fh->btv;
- mutex_lock(&btv->lock);
/* turn off overlay */
if (check_btres(fh, RESOURCE_OVERLAY))
bttv_switch_overlay(btv,fh,NULL);
/* free stuff */
- /*
- * videobuf uses cap.vb_lock - we should avoid holding btv->lock,
- * otherwise we may have dead lock conditions
- */
- mutex_unlock(&btv->lock);
videobuf_mmap_free(&fh->cap);
videobuf_mmap_free(&fh->vbi);
- mutex_lock(&btv->lock);
v4l2_prio_close(&btv->prio, fh->prio);
file->private_data = NULL;
kfree(fh);
if (!btv->users)
audio_mute(btv, 1);
- mutex_unlock(&btv->lock);
return 0;
}
if (unlikely(!fh))
return -ENOMEM;
file->private_data = fh;
- mutex_lock(&fh->cap.vb_lock);
*fh = btv->init;
- mutex_unlock(&fh->cap.vb_lock);
- mutex_lock(&btv->lock);
v4l2_prio_open(&btv->prio, &fh->prio);
btv->radio_user++;
bttv_call_all(btv, tuner, s_radio);
audio_input(btv,TVAUDIO_INPUT_RADIO);
- mutex_unlock(&btv->lock);
return 0;
}
struct bttv *btv = fh->btv;
struct rds_command cmd;
- mutex_lock(&btv->lock);
v4l2_prio_close(&btv->prio, fh->prio);
file->private_data = NULL;
kfree(fh);
btv->radio_user--;
bttv_call_all(btv, core, ioctl, RDS_CMD_CLOSE, &cmd);
- mutex_unlock(&btv->lock);
return 0;
}
return -EINVAL;
if (0 != t->index)
return -EINVAL;
- mutex_lock(&btv->lock);
strcpy(t->name, "Radio");
t->type = V4L2_TUNER_RADIO;
if (btv->audio_mode_gpio)
btv->audio_mode_gpio(btv, t, 0);
- mutex_unlock(&btv->lock);
-
return 0;
}
.open = radio_open,
.read = radio_read,
.release = radio_release,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.poll = radio_poll,
};
projects / mv-sheeva.git / blobdiff