From 25a010c8c1a5f0cc2e2794adf969e2df2ad1f0b6 Mon Sep 17 00:00:00 2001 From: "Craig W. Nadler" Date: Sun, 11 Nov 2007 15:00:15 -0800 Subject: 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 Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/Kbuild | 1 + include/linux/usb/g_printer.h | 31 +++++++++++++++++++++++++++++++ include/linux/usb/gadgetfs.h | 5 +++++ 3 files changed, 37 insertions(+) create mode 100644 include/linux/usb/g_printer.h (limited to 'include/linux/usb') diff --git a/include/linux/usb/Kbuild b/include/linux/usb/Kbuild index 6ce42bf9f74..74a9ce78e7a 100644 --- a/include/linux/usb/Kbuild +++ b/include/linux/usb/Kbuild @@ -3,4 +3,5 @@ unifdef-y += cdc.h unifdef-y += ch9.h unifdef-y += gadgetfs.h unifdef-y += midi.h +unifdef-y += g_printer.h 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) diff --git a/include/linux/usb/gadgetfs.h b/include/linux/usb/gadgetfs.h index e8654c33872..981e9ceb8fe 100644 --- a/include/linux/usb/gadgetfs.h +++ b/include/linux/usb/gadgetfs.h @@ -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 -- cgit v1.2.3