On Wed, 2008-09-17 at 11:36 -0700, Randall J. Parr wrote:
> Andy Walls wrote:
> > There are a number of things which could be going wrong. Non of which
> > are easy to diagnose.
> >
> > As a quick work-around please see if this works:
> >
> > # ivtvctl -d /dev/video1 --reset 2
> > # v4l2-ctl -d /dev/video1 -i2
> > # v4l2-ctl -d /dev/video1 -i0
> >
> > That should reset the CX28543 broadcast decoder on the second half of
> > the card, try to reload it's firmware, and re-setup all it's registers.
> > I also added the other commands to go to Composite 1 and back to tuner,
> > just to make sure the chip and driver are is set up right for tuner
> > input.
> >
> >
> > Regards,
> > Andy
> >
>
> First, thank you for the extremely cogent analysis.
>
> I tried to reset the decoder but my version of ivtvctl does not support
> the --reset option.
> I have ivtvctl version 1.0.3 on 2.6.24-19 Ubuntu 8.04 kernel
Well, the 1.1.0 version of ivtv and ivtvctl does support the '--reset n'
option. Since your kernel has a 1.1.0 version of the driver, you may
just want tp update to the version of the ivtv-utils that match your
kernel:
http://www.ivtvdriver.org/index.php/Download
> I did not see a similar option in v4l2-ctl.
It's sn ivtv (and cx18) private ioctl() call. v4l2-ctl won't let you
execute it.
> Is there additional utilities I need or an alternate way to achieve this?
> I do have the libvideo-ivtv-perl package installed.
Yes. I have attached a small C program that will perform the private
reset ioctl().
Regards,
Andy
> Thanks
> R.Parr
/*
* ivtvreset.c - issue an ivtv or cx18 internal reset ioctl
*
* Copyright (C) 2008 Andy Walls
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Andy Walls <[EMAIL PROTECTED]>
*
* Compile: gcc -Wall -O2 -o ivtvreset ivtvreset.c
*
* Invoke: ./ivtvreset -d /dev/video1 -i -b
*
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/videodev2.h>
#define VIDIOC_INT_RESET _IOW ('d', 102, __u32)
struct parsed_args
{
char *devpath;
__u32 device_mask;
};
int parse_args (int argc, char **argv, struct parsed_args *args)
{
int c, retval;
args->devpath = "/dev/video";
args->device_mask = 0;
retval = 0;
while ((c = getopt(argc, argv, "d:ib")) != -1)
{
switch (c)
{
case 'd':
args->devpath = optarg;
break;
case 'i':
args->device_mask |= 1; /* IR microcontroller */
break;
case 'b':
args->device_mask |= 2; /* broadcast decoder */
break;
default:
fprintf (stderr, "Usage:\nivtvreset [-d videodev] [-i] [-b]\n");
retval = -1;
break;
}
}
return retval;
}
int main (int argc, char **argv)
{
int fd;
struct parsed_args args;
if (parse_args(argc, argv, &args) < 0)
exit(1);
if ((fd = open(args.devpath, O_RDWR)) < 0)
{
perror("open");
fprintf(stderr, "Unable to open video control device: %s\n",
args.devpath);
exit(2);
}
if (ioctl(fd, VIDIOC_INT_RESET, &args.device_mask) < 0)
{
perror ("ioctl");
fprintf (stderr, "Can't issue private command on device %s\n",
args.devpath);
exit(3);
}
close(fd);
exit(0);
}
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