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V4L/DVB (4852): Pvrusb2: Fix horizontal resolution setting problem for 24xxx devices 

Fix long-standing issue which prevented use of 24xxx devices at any
horizontal resolution other an 720.  The problem is in the cx25840
module, if no attempt is made to initialize VBI there.  Such a thing
should not be needed, but the pvrusb2 driver is updated now to deal
with this.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mike Isely 2006-11-19 20:50:31 -03:00 committed by Mauro Carvalho Chehab
parent fa4cdd0dc4
commit ff67c614e2
2 changed files with 16 additions and 26 deletions
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16
drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
View File

@ -260,6 +260,22 @@ int pvr2_i2c_cx2584x_v4l_setup(struct pvr2_hdw *hdw,
sizeof(decoder_ops[0]))) - 1;
hdw->decoder_ctrl = &ctxt->ctrl;
cp->handler = &ctxt->handler;
{
/*
Mike Isely <isely@pobox.com> 19-Nov-2006 - This bit
of nuttiness for cx25840 causes that module to
correctly set up its video scaling. This is really
a problem in the cx25840 module itself, but we work
around it here. The problem has not been seen in
ivtv because there VBI is supported and set up. We
don't do VBI here (at least not yet) and thus we
never attempted to even set it up.
*/
struct v4l2_format fmt;
memset(&fmt,0,sizeof(fmt));
fmt.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_S_FMT,&fmt);
}
pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x cx2584x V4L2 handler set up",
cp->client->addr);
return !0;

26
drivers/media/video/pvrusb2/pvrusb2-hdw.c
View File

@ -356,28 +356,6 @@ static int ctrl_freq_set(struct pvr2_ctrl *cptr,int m,int v)
return 0;
}
static int ctrl_hres_max_get(struct pvr2_ctrl *cptr,int *vp)
{
/* If we're dealing with a 24xxx device, force the horizontal
maximum to be 720 no matter what, since we can't get the device
to work properly with any other value. Otherwise just return
the normal value. */
*vp = cptr->info->def.type_int.max_value;
if (cptr->hdw->hdw_type == PVR2_HDW_TYPE_24XXX) *vp = 720;
return 0;
}
static int ctrl_hres_min_get(struct pvr2_ctrl *cptr,int *vp)
{
/* If we're dealing with a 24xxx device, force the horizontal
minimum to be 720 no matter what, since we can't get the device
to work properly with any other value. Otherwise just return
the normal value. */
*vp = cptr->info->def.type_int.min_value;
if (cptr->hdw->hdw_type == PVR2_HDW_TYPE_24XXX) *vp = 720;
return 0;
}
static int ctrl_vres_max_get(struct pvr2_ctrl *cptr,int *vp)
{
/* Actual maximum depends on the video standard in effect. */
@ -758,10 +736,6 @@ static const struct pvr2_ctl_info control_defs[] = {
.default_value = 720,
DEFREF(res_hor),
DEFINT(19,720),
/* Hook in check for clamp on horizontal resolution in
order to avoid unsolved problem involving cx25840. */
.get_max_value = ctrl_hres_max_get,
.get_min_value = ctrl_hres_min_get,
},{
.desc = "Vertical capture resolution",
.name = "resolution_ver",