diff options
Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index e9e9c78dceb..88eb5878914 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -107,6 +107,7 @@ struct ftdi_sio_quirk { static int ftdi_jtag_probe(struct usb_serial *serial); static int ftdi_mtxorb_hack_setup(struct usb_serial *serial); +static int ftdi_NDI_device_setup(struct usb_serial *serial); static void ftdi_USB_UIRT_setup(struct ftdi_private *priv); static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv); @@ -118,6 +119,10 @@ static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = { .probe = ftdi_mtxorb_hack_setup, }; +static struct ftdi_sio_quirk ftdi_NDI_device_quirk = { + .probe = ftdi_NDI_device_setup, +}; + static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = { .port_probe = ftdi_USB_UIRT_setup, }; @@ -648,6 +653,16 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) }, { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) }, { USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID), + .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) }, { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) }, { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) }, @@ -671,7 +686,6 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) }, { USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) }, { USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) }, - { USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID) }, { USB_DEVICE(ATMEL_VID, STK541_PID) }, { USB_DEVICE(DE_VID, STB_PID) }, { USB_DEVICE(DE_VID, WHT_PID) }, @@ -1027,6 +1041,16 @@ static __u32 get_ftdi_divisor(struct tty_struct *tty, case FT2232C: /* FT2232C chip */ case FT232RL: if (baud <= 3000000) { + __u16 product_id = le16_to_cpu( + port->serial->dev->descriptor.idProduct); + if (((FTDI_NDI_HUC_PID == product_id) || + (FTDI_NDI_SPECTRA_SCU_PID == product_id) || + (FTDI_NDI_FUTURE_2_PID == product_id) || + (FTDI_NDI_FUTURE_3_PID == product_id) || + (FTDI_NDI_AURORA_SCU_PID == product_id)) && + (baud == 19200)) { + baud = 1200000; + } div_value = ftdi_232bm_baud_to_divisor(baud); } else { dbg("%s - Baud rate too high!", __func__); @@ -1558,6 +1582,39 @@ static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv) } /* ftdi_HE_TIRA1_setup */ /* + * Module parameter to control latency timer for NDI FTDI-based USB devices. + * If this value is not set in modprobe.conf.local its value will be set to 1ms. + */ +static int ndi_latency_timer = 1; + +/* Setup for the NDI FTDI-based USB devices, which requires hardwired + * baudrate (19200 gets mapped to 1200000). + * + * Called from usbserial:serial_probe. + */ +static int ftdi_NDI_device_setup(struct usb_serial *serial) +{ + struct usb_device *udev = serial->dev; + int latency = ndi_latency_timer; + int rv = 0; + char buf[1]; + + if (latency == 0) + latency = 1; + if (latency > 99) + latency = 99; + + dbg("%s setting NDI device latency to %d", __func__, latency); + dev_info(&udev->dev, "NDI device with a latency value of %d", latency); + + rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + FTDI_SIO_SET_LATENCY_TIMER_REQUEST, + FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE, + latency, 0, buf, 0, WDR_TIMEOUT); + return 0; +} + +/* * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from * userspace using openocd. @@ -2626,3 +2683,5 @@ MODULE_PARM_DESC(vendor, "User specified vendor ID (default=" module_param(product, ushort, 0); MODULE_PARM_DESC(product, "User specified product ID"); +module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override"); |