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V4L/DVB (11174): pvrusb2: Implement reporting of connected sub-devices

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The pvrusb2 driver has a function that reports internal state.  It can
be accessed from either the debug interface or as the result of a v4l
log status request.  This change adds information listing sub-devices
to the report.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mike Isely 2009-03-07 00:28:28 -03:00 committed by Mauro Carvalho Chehab
parent 20ae26c84e
commit 858f910e86
1 changed files with 23 additions and 0 deletions
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23
drivers/media/video/pvrusb2/pvrusb2-hdw.c
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@ -4779,6 +4779,29 @@ static unsigned int pvr2_hdw_report_unlocked(struct pvr2_hdw *hdw,int which,
stats.buffers_processed,
stats.buffers_failed);
}
case 6: {
struct v4l2_subdev *sd;
unsigned int tcnt = 0;
unsigned int ccnt;
const char *p;
unsigned int id;
ccnt = scnprintf(buf,
acnt,
"Associted v4l2_subdev drivers:");
tcnt += ccnt;
v4l2_device_for_each_subdev(sd, &hdw->v4l2_dev) {
id = sd->grp_id;
p = NULL;
if (id < ARRAY_SIZE(module_names)) {
p = module_names[id];
}
if (!p) p = "(unknown)";
ccnt = scnprintf(buf + tcnt,
acnt - tcnt,
" %s (%u)", p, id);
}
return tcnt;
}
default: break;
}
return 0;