releases/2.6.34.13/USB-ftdi_sio-add-Calao-reference-board-support.patch

From 4810efa8cae603216ead9a571809047cf60c4ddd Mon Sep 17 00:00:00 2001
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Date: Thu, 25 Aug 2011 11:46:58 +0200
Subject: [PATCH] USB: ftdi_sio: add Calao reference board support

commit c96fbdd0ab97235f930ebf24b38fa42a2e3458cf upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index c7e4fb8..e8bc908 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -105,6 +105,7 @@ 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);
 
@@ -132,6 +133,10 @@ 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:
@@ -181,7 +186,8 @@ 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_MICRO_CHAMELEON_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) },
@@ -1749,6 +1755,18 @@ 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
-- 
1.7.12.rc1.1.gbce1580