patch-2.4.19 linux-2.4.19/drivers/char/dummy_keyb.c

• Lines: 61
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/drivers/char/dummy_keyb.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/drivers/char/dummy_keyb.c linux-2.4.19/drivers/char/dummy_keyb.c
@@ -0,0 +1,60 @@
+/*
+ * linux/drivers/char/dummy_keyb.c
+ *
+ * Allows CONFIG_VT on hardware without keyboards.
+ *
+ * Copyright (C) 1999, 2001 Bradley D. LaRonde
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * What is this for?
+ *
+ * Not all systems have keyboards.  Some don't even have a keyboard
+ * port.  However, some of those systems have video support and can
+ * use the virtual terminal support for display.  However, the virtual
+ * terminal code expects a keyboard of some kind.  This driver keeps
+ * the virtual terminal code happy by providing it a "keyboard", albeit
+ * a very quiet one.
+ *
+ * If you want to use the virtual terminal support but your system
+ * does not support a keyboard, define CONFIG_DUMMY_KEYB along with
+ * CONFIG_VT.
+ *
+ */
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+
+void kbd_leds(unsigned char leds)
+{
+}
+
+int kbd_setkeycode(unsigned int scancode, unsigned int keycode)
+{
+	return (scancode == keycode) ? 0 : -EINVAL;
+}
+
+int kbd_getkeycode(unsigned int scancode)
+{
+	return scancode;
+}
+
+int kbd_translate(unsigned char scancode, unsigned char *keycode,
+	char raw_mode)
+{
+	*keycode = scancode;
+
+	return 1;
+}
+
+char kbd_unexpected_up(unsigned char keycode)
+{
+	return 0x80;
+}
+
+void __init kbd_init_hw(void)
+{
+	printk("Dummy keyboard driver installed.\n");
+}