Uwe Bonnes wrote: > >>>>> "Paul" == Paul Fox <p...@foxharp.boston.ma.us> writes: > > Paul> i've been out of the loop for a while, and i'm hoping this problem > Paul> has been solved. > > Paul> i use a flash programmer that's based on the MPSSE engine of an > Paul> ft4232h -- it uses the ft2232_spi.c driver in flashrom. i also > Paul> use USB-to-serial converters (often two at a time) that are > Paul> ftdi-based. > > Paul> if i'm using the serial converters, i can't then use the > Paul> programmer -- i get an error due to conflict with the kernel > Paul> ftdi_sio module. in practice, i plug the programmer into one > Paul> laptop, and the serial modules into another, and ssh between them, > Paul> but that's a fairly heavyweight workaround. > > Paul> is there a way, using API calls from either libftdi or libusb, > Paul> that i can tell the kernel driver to not take ownership of my > Paul> ftdi-based programmer? > > Multiple devices without different name are doomed for failure. libftdi > allows to open a device with product and/or serial string. Look at the recent > "ftdi_usb_open_dev & ftdi_set_baudrate" thread. ft2232_spi.c and flashrom > need to provide a way to specify these names. Look at examples/eeprom.c or > how (sourceforge/svn) xc3prog handles this. > > If your flash programmer doesn't provide a product/serial string, program > them with MPROG, by adapting examples/eeprom.c or with ftdi_eeprom. If the > flash-programmer doesn't provide the EEPROM, use the default string, > something like "Dual RS232" depending on chip type. If the other device also > has no EEPROM, you are wrecked...
That's a more general issue with working with multiple devices. Regarding Paul's specific question about kernel module conflicts, libftdi should detach the ftdi_sio kernel driver already -- look for usb_detach_kernel_driver_np in the source. You might need to be running as root for that to work properly. -jim -- libftdi - see http://www.intra2net.com/en/developer/libftdi for details. To unsubscribe send a mail to libftdi+unsubscr...@developer.intra2net.com
