Date: Sun, 25 Apr 2010 15:20:53 +0200 From: Tiemen <maillist@diode.be> To: freebsd-usb@freebsd.org Subject: Re: webcamd and cameras with Micron (MT9M0x1 and MT9T0x1) chips Message-ID: <20100425152053.biben250qokssw40@webmail.diode.be> In-Reply-To: <201004250944.24898.hselasky@c2i.net> References: <20100424140902.4b7meoicg084g04g@webmail.diode.be> <201004241701.34223.hselasky@c2i.net> <20100424211809.fgn1vc5qaswkg8kk@webmail.diode.be> <201004250944.24898.hselasky@c2i.net>
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Quoting Hans Petter Selasky <hselasky@c2i.net>:
> On Saturday 24 April 2010 21:18:09 maillist@diode.be wrote:
>> Quoting Hans Petter Selasky <hselasky@c2i.net>:
>> > Hi,
>> >
>> >> For both Micron cameras, #webcamd -B just gives `Cannot find USB
>> >> device'.
>> >
>> > This usually happens when the webcamd is not listed.
>> >
>> >> dmesg output for the Mightex camera (MT9M001 chip):
>> >> ugen3.2: <Mightex> at usbus3
>> >>
>> >> and usbconfig -d ugen3.2 dump_device_desc gives:
>> >> ugen3.2: <USB-MT9M001-2 Mightex> at usbus3, cfg=3D0 md=3DHOST spd=3DHI=
GH
>> >> (480Mbps) pwr=3DON
>> >>
>> >> bLength =3D 0x0012
>> >> bDescriptorType =3D 0x0001
>> >> bcdUSB =3D 0x0200
>> >> bDeviceClass =3D 0x0000
>> >> bDeviceSubClass =3D 0x0000
>> >> bDeviceProtocol =3D 0x0000
>> >> bMaxPacketSize0 =3D 0x0040
>> >> idVendor =3D 0x04b4
>> >> idProduct =3D 0x0228
>> >> bcdDevice =3D 0x0000
>> >> iManufacturer =3D 0x0001 <Mightex>
>> >> iProduct =3D 0x0002 <USB-MT9M001-2>
>> >> iSerialNumber =3D 0x0000 <no string>
>> >> bNumConfigurations =3D 0x0001
>> >>
>> >>
>> >
>> > Hi,
>> >
>> > I did a little bit of grepping, and I think you need to patch the
>> > following file to get your webcam working:
>> >
>> > v4l-dvb/linux/drivers/media/video/gspca/sn9c20x.c
>> >
>> > You can use this entry as an example:
>> >
>> > {USB_DEVICE(0x0c45, 0x6240), SN9C20X(MT9M001, 0x5d, 0)},
>> >
>> > The iProduct dump indicates this is the right place to hack for the
>> > MT9M001 one :-)
>> >
>> > --HPS
>>
>> I added
>> {USB_DEVICE(0x04b4, 0x0228), SN9C20X(MT9M001, 0x5d, 0)},
>> to the list, with 0x5d as i2c address as the other two MT9M001 entries
>> have it too. After re-making ulinux and using the new webcamd from
>> that directory, I get
>>
>> Attached ugen3.2[0] to cuse init 0
>> Cannot find USB device
>>
>
> After you add that USB_DEVICE() entry, the following code should be called=
.
>
> Try adding
>
> CFLAGS+=3D -g
>
> in the Makefile.
>
> Then run webcamd via gdb.
>
> In gdb type:
>
> break gspca_dev_probe
> run
>
> at first break:
>
> next
>
> If you don't get the break, you're running an older version of webcamd. Tr=
y
> svn up! You might have to do:
>
> make fetch_clean
> make fetch
>
> cd patches/
> ./do_patch.sh
>
> After svn up.
>
> /* -- device connect -- */
> static int sd_probe(struct usb_interface *intf,
> const struct usb_device_id *id)
> {
> return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
> THIS_MODULE);
> }
>
> --HPS
>
Thanks. I updated ports and svn upped the webcamd code once more, and =20
now I have pwcview working again. Below is the output of gdb with the =20
MT9M001 camera, with the USB_DEVICE() added to sn9c20x.c
Maybe one more thing: I checked the hardware, and the bridge of (both) =20
cameras is a CY7C68013(A) (a.k.a. Cypress FX2) microprocessor, not a =20
SN9C20x. Its behaviour will depend on the firmware, so this may become =20
difficult to get to work, and I guess this has more to do with v4l =20
than with freebsd-usb. Yet, I noticed that this bridge is sometimes =20
integrated in webcams functioning as an OV511 replacement:
http://ovcam.org/ov511/cameras.html
I will try to find out more about what `language' it speaks in my =20
specific cameras.
------------------------
testdoos# gdb ./webcamd
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions=
.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...
(gdb) break gspca_dev_probe
Breakpoint 1 at 0x806e4a9: file =20
/usr/home/tc/ulinux/v4l-dvb/linux/drivers/media/video/gspca/gspca.c, =20
line 2290.
(gdb) run
Starting program: /usr/home/tc/ulinux/webcamd
[New LWP 100114]
[New Thread 28401140 (LWP 100114)]
[New Thread 28419140 (LWP 100102)]
[New Thread 28418ec0 (LWP 100115)]
[New Thread 28418d80 (LWP 100132)]
Attached ugen3.2[0] to cuse unit 0
[New Thread 28418c40 (LWP 100139)]
[Switching to Thread 28401140 (LWP 100114)]
Breakpoint 1, gspca_dev_probe (intf=3D0x285b82b4, id=3D0x813c020,
sd_desc=3D0x8139be0, dev_size=3D1808, module=3D0x0)
at =20
/usr/home/tc/ulinux/v4l-dvb/linux/drivers/media/video/gspca/gspca.c:2290
2290 struct usb_device *dev =3D interface_to_usbdev(intf);
(gdb) next
2293 PDEBUG(D_PROBE, "probing %04x:%04x", id->idVendor, =20
id->idProduct);
(gdb) c
Continuing.
Program received signal SIGHUP, Hangup.
[Switching to Thread 28418c40 (LWP 100139)]
0x28288f3f in poll () from /lib/libc.so.7
(gdb) c
Continuing.
[Thread 28418c40 (LWP 100139) exited]
[New Thread 28418c40 (LWP 100139)]
Cannot find USB device
Program exited with code 01.
(gdb) quit
---------------------------------
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