usb gadget: cdc obex glue

The following patch introduces a new f_obex.c function driver.
It allows userspace obex servers to use usb as transport layer
for their messages.

[ dbrownell@users.sourceforge.net: various fixes and cleanups ]

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 3faa7a7022df..2dee848b2f59 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -43,6 +43,7 @@
 #include "epautoconf.c"
 
 #include "f_acm.c"
+#include "f_obex.c"
 #include "f_serial.c"
 #include "u_serial.c"
 
@@ -56,6 +57,7 @@
 #define GS_VENDOR_ID                    0x0525  /* NetChip */
 #define GS_PRODUCT_ID                   0xa4a6  /* Linux-USB Serial Gadget */
 #define GS_CDC_PRODUCT_ID               0xa4a7  /* ... as CDC-ACM */
+#define GS_CDC_OBEX_PRODUCT_ID          0xa4a9  /* ... as CDC-OBEX */
 
 /* string IDs are assigned dynamically */
 
@@ -125,6 +127,10 @@ static int use_acm = true;
 module_param(use_acm, bool, 0);
 MODULE_PARM_DESC(use_acm, "Use CDC ACM, default=yes");
 
+static int use_obex = false;
+module_param(use_obex, bool, 0);
+MODULE_PARM_DESC(use_obex, "Use CDC OBEX, default=no");
+
 static unsigned n_ports = 1;
 module_param(n_ports, uint, 0);
 MODULE_PARM_DESC(n_ports, "number of ports to create, default=1");
@@ -139,6 +145,8 @@ static int __init serial_bind_config(struct usb_configuration *c)
         for (i = 0; i < n_ports && status == 0; i++) {
                 if (use_acm)
                         status = acm_bind_config(c, i);
+                else if (use_obex)
+                        status = obex_bind_config(c, i);
                 else
                         status = gser_bind_config(c, i);
         }
@@ -249,6 +257,12 @@ static int __init init(void)
                 device_desc.bDeviceClass = USB_CLASS_COMM;
                 device_desc.idProduct =
                                 __constant_cpu_to_le16(GS_CDC_PRODUCT_ID);
+        } else if (use_obex) {
+                serial_config_driver.label = "CDC OBEX config";
+                serial_config_driver.bConfigurationValue = 3;
+                device_desc.bDeviceClass = USB_CLASS_COMM;
+                device_desc.idProduct =
+                        __constant_cpu_to_le16(GS_CDC_OBEX_PRODUCT_ID);
         } else {
                 serial_config_driver.label = "Generic Serial config";
                 serial_config_driver.bConfigurationValue = 1;