Thanks for your answer :)
Le Tue 24/06/2008 à 00:18 Laurent Pinchart à écrit:
> bInterfaceClass should be set to '14 Video'. This means your firmware
> hasn't been patched.
Well, there are three different interface descriptors, and one of these
have the correct bInterfaceClass:
Interface Descriptor:
...
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
...
Interface Descriptor:
...
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
...
Interface Descriptor:
...
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
> > Do you have any ideas about this problem ?
> > Some months ago, my webcam worked with a driver derived from
> > uvcvideo. but that was with the previous kernel. Now it no longer
> > compiles.
>
> Try to upgrade the firmware extractor/loader. It should patch your
> firmware to make it compatible with the UVC driver.
I tried the iSight firmware tools version 1.2 with two different
firmwares. Their MD5 sums are:
8b78709d02d3584f40cc041db9eecfe8 An old version
28da1ad8c1e468d8533eca68853f0d40 My current Mac OS X version
And i also booted from Mac OS X, used the webcam and then rebooted
Linux. it should have loaded the firmware corectly, but I didn't have
any more success.
ift-extract -a shows to me:
** Message: Found Mac OS X.4 intel driver
** Message: Firmware extracted successfully in /lib/firmware/isight.fw
** Message: Apply patch 0 : Fix video control interface descriptor
** Message: Apply patch 1 : Fix video streaming interface descriptor
** Message: Apply patch 2 : Fix video streaming device qualifier
** Message: Firmware patched successfully
and
** Message: Found Mac OS X.5.1 driver
** Message: Firmware extracted successfully in /lib/firmware/isight.fw
** Message: Apply patch 0 : Fix video control interface descriptor
** Message: Apply patch 1 : Fix video streaming interface descriptor
** Message: Apply patch 2 : Fix video streaming device qualifier
** Message: Firmware patched successfully
So, do you think the firmware is correctly loaded or not?
In the meantime, I was looking at the driver source code (mainly
ucv_driver.c), and I just discovered that the iSight webcam was referred
as:
/* Apple Built-In iSight */
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
| USB_DEVICE_ID_MATCH_INT_INFO,
.idVendor = 0x05ac,
.idProduct = 0x8501,
.bInterfaceClass = USB_CLASS_VIDEO,
.bInterfaceSubClass = 1,
.bInterfaceProtocol = 0,
.driver_info = UVC_QUIRK_PROBE_MINMAX
| UVC_QUIRK_BUILTIN_ISIGHT },
And that my bInterfaceSubClass was 2 instead of 1. Changing that in the
driver doesn't seems to help. When I load the driver (trace=255), I
don't get any probe message.
I think i'll have to find some documentation about the USB interface in
the Linux kernel.
I'd be glad if someone can find a solution to that issue.
Thanks for any help
Mildred
--
Mildred Ki'lya
E-Mail: mildred593(at)online.fr
Site: <http://mildred632.free.fr/>
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