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-rw-r--r--drv_LCDLinux.h92
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diff --git a/drv_LCDLinux.h b/drv_LCDLinux.h
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+/* lcd.h
+ *
+ * $Id: drv_LCDLinux.h,v 1.1 2005/04/09 07:36:42 reinelt Exp $
+ *
+ * LCD driver for HD44780 compatible displays connected to the parallel port.
+ *
+ * External interface header file.
+ *
+ * Copyright (C) 2004, 2005 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
+ *
+ * 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
+ *
+ */
+
+#ifndef LCD_H
+#define LCD_H
+
+#define LCD_LINUX_VERSION "0.8.8" /* Version number */
+
+#define LCD_MAJOR 120 /* Major number for this device
+ * Set this to 0 for dynamic allocation
+ */
+
+#include <linux/types.h>
+
+struct lcd_driver {
+ /* Hardware */
+ unsigned short io; /* Parport base address */
+ unsigned short flags; /* Flags (see Documentation) */
+
+ /* Display geometry */
+ unsigned short num_cntr; /* Number of available controllers */
+ unsigned short cntr_rows; /* Rows per controller */
+ unsigned short disp_cols; /* Columns */
+ unsigned short frames; /* Framebuffer frames */
+
+ unsigned short tabstop; /* Length of tab character */
+};
+
+/* IOCTLs */
+#include <asm/ioctl.h>
+#define IOCTL_SET_PARAM _IOW(LCD_MAJOR, 0, struct lcd_driver *)
+#define IOCTL_GET_PARAM _IOR(LCD_MAJOR, 1, struct lcd_driver *)
+
+#define LCD_PROC_ON 0x0001 /* Enable the /proc filesystem support */
+#define LCD_READ_ON 0x0002 /* Enable the read functions */
+#define LCD_ETTY_ON 0x0004 /* Enable the tty support */
+#define LCD_CONSOLE 0x0008 /* Enable the console support */
+#define LCD_4BITS_BUS 0x0010 /* Set the bus length to 4 bits */
+#define LCD_5X10_FONT 0x0020 /* Use 5x10 dots fonts */
+
+
+
+#ifdef __KERNEL__ /* The rest is for kernel only */
+
+#include <linux/version.h>
+
+#ifndef KERNEL_VERSION
+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
+#endif
+
+#ifndef LINUX_VERSION_CODE
+#error - LINUX_VERSION_CODE undefined.
+#endif
+
+/* External interface */
+int lcd_init(struct lcd_driver *);
+void lcd_exit(void);
+int lcd_ioctl(unsigned int, void *);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
+ssize_t lcd_write(const char *, size_t, unsigned int);
+ssize_t lcd_read(char *, size_t, unsigned int);
+#else
+int lcd_write(const char *, int, unsigned int);
+int lcd_read(char *, int, unsigned int);
+#endif
+
+#endif /* __KERNEL__ */
+
+#endif /* External interface included */