I'm trying to add the usb to serial port driver to my arch linux arm device, and I noticed that the kernel source tree already includes the source files for the FTDI driver, located in:
drivers/usb/serial, there exists the ftdi_sio.c and ftdi_sio.h files.
When I navigate to kernel/drivers, I cannot find the ftdi_sio.ko module anywhere.
How do I build the ftdi kernel module and include it to boot so I can have usb to serial port capability on my arch linux arm?
I suppose you have the kernel source tree (from your distro package manager) on your arm device and you don't cross-compile :
make menuconfig
Navigate to : Device Drivers -> USB Support -> USB Serial Converter Support
And choose 'M'odule for USB FTDI Single Port Serial Driver
Exit, save changes and
make M=drivers/usb/serial/
make modules_install