On Friday 14 April 2006 9:16 am, Brian Wang wrote: > Hello all, > > I am testing the USB gadget support for S3C2410 on a platform similar > to the SMDK2410 board. I am using the patches found on: > http://handhelds.org/moin/moin.cgi/HpIpaqH1940Downloads > (Linux 2.6.14.3)
There's newer code, as I recall; search archives of this list in the last month or two. I'd expect the newer code would be able to work on that older kernel. > The test results are described below. I am sorry that it's a bit long... > "testusb.c" program is used to perform the testing (The host is > running Gentoo, Linux 2.6.12-r1) on g_zero. > * -t9 always suceeds. > * -t10 seems to _pause_ when the "Operation not supported" message > is issued by the s3c2410_udc.c driver. > * -t14 always fails. I think the newer code got "-t9" and "-t10" to work, but still didn't resolve the ep0out issues shown by "-t14". > * Those bulk-out tests all succeed. > * The first -t2 (bulk-in) test always succeed. All the following > -t2 tests will fail with -110 (connection timeout). And I think the newer code was more successful with bulk-IN too. > One more strange thing is that if the debugging messages of > s3c2410_udc.c are turned on, M$ WinXP will recognize the board as a > mass storage device, when g_file_storage is used. I can even > read/write small amount of data to it with extremely bad performance, > of course. When the messages are turned off, the enumeration will > succeed, but XP will later claim that there is something wrong with > the drive. Does this indicate a race condition? Another option would be "gremlins", but they're harder to catch. > What should I check for the tests that failed? I am a newbie... > I must have done something very wrong since there seems to be people > running Linux with the gadget support on h1940 (S3C2410 as the MCU). The main wrong thing you're doing is trying an old driver version. I don't know that there's ever been a fully functional one; sometimes these things take time to solidify, especially when everyone looking at the problem is a newbie either to Linux or to USB. ;) - Dave ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
