1 files changed, 26 insertions, 5 deletions

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 9f986b417c5b..33351312327f 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -124,7 +124,7 @@ choice
 
 config USB_GADGET_AT91
         boolean "Atmel AT91 USB Device Port"
-        depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91CAP9
+        depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91CAP9 && !ARCH_AT91SAM9G45
         select USB_GADGET_SELECTED
         help
            Many Atmel AT91 processors (such as the AT91RM2000) have a
@@ -143,7 +143,7 @@ config USB_AT91
 config USB_GADGET_ATMEL_USBA
         boolean "Atmel USBA"
         select USB_GADGET_DUALSPEED
-        depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL
+        depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
         help
           USBA is the integrated high-speed USB Device controller on
           the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
@@ -627,9 +627,10 @@ config USB_AUDIO
 config USB_ETH
         tristate "Ethernet Gadget (with CDC Ethernet support)"
         depends on NET
+        select CRC32
         help
-          This driver implements Ethernet style communication, in either
-          of two ways:
+          This driver implements Ethernet style communication, in one of
+          several ways:
           
            - The "Communication Device Class" (CDC) Ethernet Control Model.
              That protocol is often avoided with pure Ethernet adapters, in
@@ -639,7 +640,11 @@ config USB_ETH
            - On hardware can't implement that protocol, a simple CDC subset
              is used, placing fewer demands on USB.
 
-          RNDIS support is a third option, more demanding than that subset.
+           - CDC Ethernet Emulation Model (EEM) is a newer standard that has
+             a simpler interface that can be used by more USB hardware.
+
+          RNDIS support is an additional option, more demanding than than
+          subset.
 
           Within the USB device, this gadget driver exposes a network device
           "usbX", where X depends on what other networking devices you have.
@@ -672,6 +677,22 @@ config USB_ETH_RNDIS
            XP, you'll need to download drivers from Microsoft's website; a URL
            is given in comments found in that info file.
 
+config USB_ETH_EEM
+       bool "Ethernet Emulation Model (EEM) support"
+       depends on USB_ETH
+       default n
+       help
+         CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
+         and therefore can be supported by more hardware.  Technically ECM and
+         EEM are designed for different applications.  The ECM model extends
+         the network interface to the target (e.g. a USB cable modem), and the
+         EEM model is for mobile devices to communicate with hosts using
+         ethernet over USB.  For Linux gadgets, however, the interface with
+         the host is the same (a usbX device), so the differences are minimal.
+
+         If you say "y" here, the Ethernet gadget driver will use the EEM
+         protocol rather than ECM.  If unsure, say "n".
+
 config USB_GADGETFS
         tristate "Gadget Filesystem (EXPERIMENTAL)"
         depends on EXPERIMENTAL