> > I found Documentation/ioctl-numbers.txt for new-style ioctls. > > Currently I'm using 'N' with a range of 20 to 3F. > > Before a final release, I'll check if they're still unused. > > Heh, good luck, I don't think I'll take a patch adding new ioctls > without a _very_ good reason.
What about the ioctls to control the latency of the on-chip buffers? They are very useful for performance tuning. IMHO there are enough useful uses for the new ioctls. > Also, you'll need to make the necessary > 64 bit thunking layer if somehow you convince me :) I thought using the _IO macros should do it or did I miss something? > > [FTDI Bit Bang mode] > > > It looks like this mode does not even look like a serial device anymore. > > > I'd recommend just using libusb to talk to the device to use this new > > > functionality (and to send new firmware to the device), that way you > > > don't have to mess with kernel programming at all. > > > > Hehe, it's still serial, because you have to write out bytes > > to change the status of the pins. It's more like synchronous serial. > > If you switch one line from zero to one and back constantly, > > you even have a clock line to talk to other chips. > > But it isn't serial data, so you don't need the tty layer. Why not just > do it all though libusb/usbfs in userspace? But you have to send the data using the serial way. A userspace program using libusb would have to copy all the init and data writing code of the kernel. Also it would be better if people could use a stock kernel instead of having to download libusb and special software if they want to use the bitbang mode. The bitbang mode just changes the final behavior of the chip, all data transfer is done the same way. [eeprom checkusm generation] > No, that should be done in userspace, not kernelspace. Already removed the code some hours later after my first post about it :-) Thomas ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
