USB: add Printer Gadget Driver

G_PRINTER: Adds a USB printer gadget driver for use in printer firmware.

This adds a USB printer gadget driver for use in printer firmware.
The printer gadget channels data between the USB host and a userspace
program driving the print engine. The user space program reads and
writes the device file /dev/g_printer to receive or send printer data.
It can use ioctl calls to the device file to get or set printer status.

Signed-off-by: Craig W. Nadler <craig@nadler.us>
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/Kconfig b/drivers/usb/gadget/Kconfig
index e706882a8e6f..8a88f24270be 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -548,6 +548,20 @@ config USB_MIDI_GADGET
           Say "y" to link the driver statically, or "m" to build a
           dynamically linked module called "g_midi".
 
+config USB_G_PRINTER
+        tristate "Printer Gadget"
+        help
+          The Printer Gadget channels data between the USB host and a
+          userspace program driving the print engine. The user space
+          program reads and writes the device file /dev/g_printer to
+          receive or send printer data. It can use ioctl calls to
+          the device file to get or set printer status.
+
+          Say "y" to link the driver statically, or "m" to build a
+          dynamically linked module called "g_printer".
+
+          For more information, see Documentation/usb/gadget_printer.txt
+          which includes sample code for accessing the device file.
 
 # put drivers that need isochronous transfer support (for audio
 # or video class gadget drivers), or specific hardware, here.