Re: [Linux-uvc-devel] [SVN] Added preliminary pan/tilt support for Quickcam Orbit MP

[Laurent P. <lau...@sk...>]

> Feb  7 13:16:26 linux kernel: usbcore: deregistering driver usbvideo
> Feb  7 13:16:33 linux kernel: uvcvideo: Found UVC 1.00 device <unnamed>
> (046d:08c2)
> Feb  7 13:16:33 linux kernel: usbcore: registered new driver usbvideo
> Feb  7 13:16:33 linux kernel: USB Video Class driver (v0.1.0)
> Feb  7 13:16:57 linux kernel: uvcvideo: Failed to query (132) UVC control 1
> (unit 9) : 1.
> Feb  7 13:16:57 linux syslog-ng[3019]: STATS: dropped 0
> Feb  7 13:17:00 linux kernel: uvcvideo: Failed to query (132) UVC control 1
> (unit 9) : 1.

Are you sure you're not having trouble with querying 
V4L2_CID_PANTILT_RELATIVE ? The failure in the kernel log seems to indicate 
that you're querying V4L2_CID_PANTILT_RELATIVE twice.

Anyway, the following patch might help.

Laurent Pinchart

Index: uvcvideo.c
===================================================================
--- uvcvideo.c  (revision 18)
+++ uvcvideo.c  (working copy)
@@ -477,8 +477,7 @@
                .type           = V4L2_CTRL_TYPE_INTEGER,
                .unit           = UVC_GUID_LOGITECH_MOTOR,
                .flags          = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_MIN
-                               | UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES
-                               | UVC_CONTROL_GET_DEF,
+                               | UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_DEF,
        },
        {
                .v4l2           = V4L2_CID_PANTILT_RESET,