On Wed, Mar 14, 2012 at 05:54:25PM -0400, Jim Paris wrote: > Add PID 0x6015, corresponding to the new series of FT-X chips > (FT220XD, FT201X, FT220X, FT221X, FT230X, FT231X, FT240X). They all > appear as serial devices, and seem indistinguishable except for the > default product string stored in their EEPROM. The baudrate > generation matches FT232RL devices. > > Tested with a FT201X and FT230X at various baudrates (100 - 3000000). > > Sample dmesg: > ftdi_sio: v1.6.0:USB FTDI Serial Converters Driver > usb 2-1: new full-speed USB device number 6 using ohci_hcd > usb 2-1: New USB device found, idVendor=0403, idProduct=6015 > usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > usb 2-1: Product: FT230X USB Half UART > usb 2-1: Manufacturer: FTDI > usb 2-1: SerialNumber: DC001WI6 > ftdi_sio 2-1:1.0: FTDI USB Serial Device converter detected > drivers/usb/serial/ftdi_sio.c: ftdi_sio_port_probe > drivers/usb/serial/ftdi_sio.c: ftdi_determine_type: bcdDevice = 0x1000, bNumInterfaces = 1 > usb 2-1: Detected FT-X > usb 2-1: Number of endpoints 2 > usb 2-1: Endpoint 1 MaxPacketSize 64 > usb 2-1: Endpoint 2 MaxPacketSize 64 > usb 2-1: Setting MaxPacketSize 64 > drivers/usb/serial/ftdi_sio.c: read_latency_timer > drivers/usb/serial/ftdi_sio.c: write_latency_timer: setting latency timer = 1 > drivers/usb/serial/ftdi_sio.c: create_sysfs_attrs > drivers/usb/serial/ftdi_sio.c: sysfs attributes for FT-X > usb 2-1: FTDI USB Serial Device converter now attached to ttyUSB0 > > Signed-off-by: Jim Paris <jim@xxxxxxxx> > --- > > Unfortunately, the existing ftdi_determine_type considers anything > with bcdDevice >= 0x0900 to be a FT232H, which means that the baudrate > generation is incorrect if we just add a VID/PID. Would this still be > appropriate for -stable? Or maybe a stripped down version with just > the bare minimum to get it working (new VID/PID, and force FT232RL > chip type when bcdDevice == 0x1000)? > > drivers/usb/serial/ftdi_sio.c | 20 +++++++++++++++----- > drivers/usb/serial/ftdi_sio.h | 3 ++- > drivers/usb/serial/ftdi_sio_ids.h | 1 + > 3 files changed, 18 insertions(+), 6 deletions(-) Such a "small" patch is fine for stable as-is. Do you want me to take this one and mark it as such? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
