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authorCraig W. Nadler <craig@nadler.us>2007-11-11 15:00:15 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2008-02-01 14:34:49 -0800
commit25a010c8c1a5f0cc2e2794adf969e2df2ad1f0b6 (patch)
tree1d2e477e44a2a8122696711bfd2b9aad35a265bf /include
parent676d3aa16f66d94bf5654781b77d1e070c8b0514 (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')
-rw-r--r--include/linux/usb/Kbuild1
-rw-r--r--include/linux/usb/g_printer.h31
-rw-r--r--include/linux/usb/gadgetfs.h5
3 files changed, 37 insertions, 0 deletions
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