USB: ftdi_sio: add Calao reference board support

Calao use on there dev kits a FT2232 where the port 0 is used for the JTAG and
port 1 for the UART

They use the same VID and PID as FTDI Chip but they program the manufacturer
name in the eeprom

So use this information to detect it

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Gregory Hermant <gregory.hermant@calao-systems.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 78a2cf9..5fc13e7 100644 (file)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -101,6 +101,7 @@ 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 int   ftdi_stmclite_probe(struct usb_serial *serial);
+static int   ftdi_8u2232c_probe(struct usb_serial *serial);
 static void  ftdi_USB_UIRT_setup(struct ftdi_private *priv);
 static void  ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
 
@@ -128,6 +129,10 @@ static struct ftdi_sio_quirk ftdi_stmclite_quirk = {
        .probe  = ftdi_stmclite_probe,
 };
 
+static struct ftdi_sio_quirk ftdi_8u2232c_quirk = {
+       .probe  = ftdi_8u2232c_probe,
+};
+
 /*
  * The 8U232AM has the same API as the sio except for:
  * - it can support MUCH higher baudrates; up to:
@@ -178,7 +183,8 @@ static struct usb_device_id id_table_combined [] = {
        { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_232RL_PID) },
-       { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) },
+       { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) ,
+               .driver_info = (kernel_ulong_t)&ftdi_8u2232c_quirk },
        { USB_DEVICE(FTDI_VID, FTDI_4232H_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_232H_PID) },
        { USB_DEVICE(FTDI_VID, FTDI_MICRO_CHAMELEON_PID) },
@@ -1737,6 +1743,18 @@ static int ftdi_jtag_probe(struct usb_serial *serial)
        return 0;
 }
 
+static int ftdi_8u2232c_probe(struct usb_serial *serial)
+{
+       struct usb_device *udev = serial->dev;
+
+       dbg("%s", __func__);
+
+       if (strcmp(udev->manufacturer, "CALAO Systems") == 0)
+               return ftdi_jtag_probe(serial);
+
+       return 0;
+}
+
 /*
  * First and second port on STMCLiteadaptors is reserved for JTAG interface
  * and the forth port for pio