Date: Sat, 15 Nov 2008 10:22:55 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: Stefan Ehmann <shoesoft@gmx.net> Cc: freebsd-current@freebsd.org Subject: Re: usb2: no sound with M-Audio Transit Message-ID: <200811151022.56606.hselasky@c2i.net> In-Reply-To: <200811151004.06521.shoesoft@gmx.net> References: <200811141541.49595.shoesoft@gmx.net> <200811141811.24491.hselasky@c2i.net> <200811151004.06521.shoesoft@gmx.net>
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On Saturday 15 November 2008, Stefan Ehmann wrote: > On Friday 14 November 2008 18:11:23 Hans Petter Selasky wrote: > > On Friday 14 November 2008, Stefan Ehmann wrote: > > > http://stud4.tuwien.ac.at/~e0125637/fbsd/transit_config.dump > > > > Maybe there is something wrong with the 16-bit to 24-bit data conversion > > ? > > One more thing: > > I'm using dfu-util for the firmware download. See > http://svn.openmoko.org/trunk/src/host/dfu-util/ > > The second usb_claim_interface() call fails. But that doesn't seem to be > fatal. If I comment out the exit() the download succeeds. > > Here's the output: > dfu-util - (C) 2007-2008 by OpenMoko Inc. > This program is Free Software and has ABSOLUTELY NO WARRANTY > > Opening USB Device 0x0000:0x0000... > Claiming USB DFU Runtime Interface... > Determining device status: state = dfuIDLE, status = 0 > WARNING: Runtime device already in DFU state ?!? > Found Runtime: [0x0763:0x2806] devnum=0, cfg=0, intf=0, alt=0, name="RAM" > Claiming USB DFU Interface... > Cannot claim interface: Unknown error > Setting Alternate Setting ... > Determining device status: state = dfuIDLE, status = 0 > dfuIDLE, continuing > Transfer Size = 0x0040 > bytes_per_hash=112 > Starting download: [##################################################] > finished! > state(7) = dfuMANIFEST, status(0) = No error condition is present > state(2) = dfuIDLE, status(0) = No error condition is present > Done! > can't detach: Unknown error > Resetting USB to switch back to runtime mode > error resetting after download: Unknown error > > > The problem is that after the download the device needs to be reset so it > gets recognized as uaudio device. This was not implemented in the libusb > from sourceforge for BSD. > > As a workaround you can slightly unplug the cable (I think I read this on > some netbsd list) which works but is not very convenient. > > The reset in dfu-util fails, possibly due to preceding errors. > > I also tried it with usbconfig: > # usbconfig -u 0 -a 2 reset > usbconfig: could not reset device: Device not configured > > And this error in dmesg > usb2_req_re_enumerate:1362: addr=2, getting device descriptor failed! > > This is not critical but it would be nice to get rid of this ugly > workaround. Hi, The problem is that the device changes its configuration descriptor and the reset implementation assumes that the configuration descriptor is the same after the reset. I will see if I can make a patch for this. I have the same problem when flashing the openmoko. I will make a patch for this by tomorrow. --HPS
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