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USB: add Printer Gadget Driver

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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>
This commit is contained in:
Craig W. Nadler
2007-11-11 15:00:15 -08:00
committed by Greg Kroah-Hartman
parent 676d3aa16f
commit 25a010c8c1
7 changed files with 2156 additions and 0 deletions
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5
include/linux/usb/gadgetfs.h
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@ -59,6 +59,11 @@ struct usb_gadgetfs_event {
};
/* The 'g' code is also used by printer gadget ioctl requests.
* Don't add any colliding codes to either driver, and keep
* them in unique ranges (size 0x20 for now).
*/
/* endpoint ioctls */
/* IN transfers may be reported to the gadget driver as complete