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/* hd44780.h
*
* $Id: drv_LCDLinux.h,v 1.6 2005/08/27 07:02:25 reinelt Exp $
*
* LCD-Linux:
* Driver for HD44780 compatible displays connected to the parallel port.
*
* HD44780 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 HD44780_H
#define HD44780_H
#include <linux/lcd-linux.h>
#define HD44780_VERSION "0.9.0" /* Version number */
#define HD44780_STRING "hd44780"
/* IOCTLs */
#include <asm/ioctl.h>
#define IOCTL_RAW_CMD _IOW(LCD_MAJOR, 0, unsigned char *)
/* flags */
#define HD44780_CHECK_BF 0x0001 /* Do busy flag checking */
#define HD44780_4BITS_BUS 0x0002 /* Set the bus length to 4 bits */
#define HD44780_5X10_FONT 0x0004 /* Use 5x10 dots fonts */
/*** HD44780 Command Set ***/
/* Clear Display*/
#define CLR_DISP 0x01 /* Clear entire display; cursor at row 0, column 0 */
/* Return Home */
#define RET_HOME 0x02 /* Cursor at row 0, column 0; display content doesn't change */
/* Entry Mode Set */
#define DISP_SHIFT_ON 0x05 /* Shift display, not cursor after data write */
#define DISP_SHIFT_OFF 0x04 /* Shift cursor, not display after data write */
#define CURS_INC 0x06 /* Shift on the right after data read/write */
#define CURS_DEC 0x04 /* Shift on the left after data read/write */
/* Display on/off Control */
#define BLINK_ON 0x09 /* Cursor blinking on */
#define BLINK_OFF 0x08 /* Cursor blinking off */
#define CURS_ON 0x0a /* Display Cursor */
#define CURS_OFF 0x08 /* Hide Cursor */
#define DISP_ON 0x0c /* Turn on display updating */
#define DISP_OFF 0x08 /* Freeze display content */
/* Cursor or Display Shift */
#define SHIFT_RIGHT 0x14 /* Shift on the right */
#define SHIFT_LEFT 0x10 /* Shift on the left */
#define SHIFT_DISP 0x18 /* Shift display */
#define SHIFT_CURS 0x10 /* Shift cursor */
/* Function Set */
#define FONT_5X10 0x24 /* Select 5x10 dots font */
#define FONT_5X8 0x20 /* Select 5x8 dots font */
#define DISP_2_LINES 0x28 /* Select 2 lines display (only 5x8 font allowed) */
#define DISP_1_LINE 0x20 /* Select 1 line display */
#define BUS_8_BITS 0x30 /* Set 8 data bits */
#define BUS_4_BITS 0x20 /* Set 4 data bits */
/* Set CGRAM Address */
#define CGRAM_IO 0x40 /* Access the CGRAM */
/* Set DDRAM Address */
#define DDRAM_IO 0x80 /* Access the DDRAM */
#endif /* HD44780 included */
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