diff options
| author | Craig W. Nadler <craig@nadler.us> | 2007-11-11 15:00:15 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-02-01 14:34:49 -0800 |
| commit | 25a010c8c1a5f0cc2e2794adf969e2df2ad1f0b6 (patch) | |
| tree | 1d2e477e44a2a8122696711bfd2b9aad35a265bf /include/linux/usb/g_printer.h | |
| parent | 676d3aa16f66d94bf5654781b77d1e070c8b0514 (diff) | |
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>
Diffstat (limited to 'include/linux/usb/g_printer.h')
| -rw-r--r-- | include/linux/usb/g_printer.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/linux/usb/g_printer.h b/include/linux/usb/g_printer.h new file mode 100644 index 00000000000..0c5ea1e3eb9 --- /dev/null +++ b/include/linux/usb/g_printer.h @@ -0,0 +1,31 @@ +/* + * g_printer.h -- Header file for USB Printer gadget driver + * + * Copyright (C) 2007 Craig W. Nadler + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#define PRINTER_NOT_ERROR 0x08 +#define PRINTER_SELECTED 0x10 +#define PRINTER_PAPER_EMPTY 0x20 + +/* The 'g' code is also used by gadgetfs ioctl requests. + * Don't add any colliding codes to either driver, and keep + * them in unique ranges (size 0x20 for now). + */ +#define GADGET_GET_PRINTER_STATUS _IOR('g', 0x21, unsigned char) +#define GADGET_SET_PRINTER_STATUS _IOWR('g', 0x22, unsigned char) |