USB: ftdi_sio: add ST Micro Connect Lite uart support

commit 6ec2f46c4b4abf48c88c0ae7c476f347b97e1105 upstream.

on ST Micro Connect Lite we have 4 port
Part A and B for the JTAG
Port C Uart
Port D for PIO

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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 4d8ba637547620fc08a375efe626314850f16c88..96208a97703812544cdb0155c4427761815b51d9 100644 (file)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -104,6 +104,7 @@ 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 int   ftdi_stmclite_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);
 
@@ -127,6 +128,10 @@ static struct ftdi_sio_quirk ftdi_HE_TIRA1_quirk = {
        .port_probe = ftdi_HE_TIRA1_setup,
 };
 
+static struct ftdi_sio_quirk ftdi_stmclite_quirk = {
+       .probe  = ftdi_stmclite_probe,
+};
+
 /*
  * The 8U232AM has the same API as the sio except for:
  * - it can support MUCH higher baudrates; up to:
@@ -793,6 +798,8 @@ static struct usb_device_id id_table_combined [] = {
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
        { USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_SH4_PID),
                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+       { USB_DEVICE(ST_VID, ST_STMCLT1030_PID),
+               .driver_info = (kernel_ulong_t)&ftdi_stmclite_quirk },
        { },                                    /* Optional parameter entry */
        { }                                     /* Terminating entry */
 };
@@ -1725,6 +1732,25 @@ static int ftdi_jtag_probe(struct usb_serial *serial)
        return 0;
 }
 
+/*
+ * First and second port on STMCLiteadaptors is reserved for JTAG interface
+ * and the forth port for pio
+ */
+static int ftdi_stmclite_probe(struct usb_serial *serial)
+{
+       struct usb_device *udev = serial->dev;
+       struct usb_interface *interface = serial->interface;
+
+       dbg("%s", __func__);
+
+       if (interface == udev->actconfig->interface[2])
+               return 0;
+
+       dev_info(&udev->dev, "Ignoring serial port reserved for JTAG\n");
+
+       return -ENODEV;
+}
+
 /*
  * The Matrix Orbital VK204-25-USB has an invalid IN endpoint.
  * We have to correct it if we want to read from it.

diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 4b876b45e44e906637e4b94aae52d3352d520d2c..fa61c337c5226602b39d6628604b95e8990b2591 100644 (file)
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -1014,6 +1014,12 @@
 #define STB_PID                        0x0001 /* Sensor Terminal Board */
 #define WHT_PID                        0x0004 /* Wireless Handheld Terminal */
 
+/*
+ * STMicroelectonics
+ */
+#define ST_VID                 0x0483
+#define ST_STMCLT1030_PID      0x3747 /* ST Micro Connect Lite STMCLT1030 */
+
 /*
  * Papouch products (http://www.papouch.com/)
  * Submitted by Folkert van Heusden