25a010c8c1
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>
32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
/*
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* g_printer.h -- Header file for USB Printer gadget driver
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*
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* Copyright (C) 2007 Craig W. Nadler
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define PRINTER_NOT_ERROR 0x08
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#define PRINTER_SELECTED 0x10
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#define PRINTER_PAPER_EMPTY 0x20
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/* The 'g' code is also used by gadgetfs ioctl requests.
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* Don't add any colliding codes to either driver, and keep
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* them in unique ranges (size 0x20 for now).
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*/
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#define GADGET_GET_PRINTER_STATUS _IOR('g', 0x21, unsigned char)
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#define GADGET_SET_PRINTER_STATUS _IOWR('g', 0x22, unsigned char)
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