141 lines
3.7 KiB
C
141 lines
3.7 KiB
C
/* $NetBSD: xboxlcd.c,v 1.2 2007/01/07 02:32:10 hubertf Exp $ */
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/*-
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* Copyright (c) 2006 Andrew Gillham
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* Driver for Xecuter X3 LCD add-on
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <machine/bus.h>
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#include <machine/xbox.h>
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#include <machine/pio.h>
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void xbox_lcd_init(void)
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{
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outb(X3LCD_O_DAT, 0);
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outb(X3LCD_O_CMD, 0);
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outb(X3LCD_O_DIR_DAT, 0xFF);
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outb(X3LCD_O_DIR_CMD, 0x07);
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xbox_lcd_output(X3LCD_FUNC_SET | X3LCD_DL_FLAG, X3LCD_INI);
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delay(50000);
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xbox_lcd_output(X3LCD_FUNC_SET | X3LCD_DL_FLAG, X3LCD_INI);
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delay(50000);
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xbox_lcd_output(X3LCD_FUNC_SET | X3LCD_DL_FLAG, X3LCD_INI);
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delay(50000);
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xbox_lcd_output(X3LCD_FUNC_SET, X3LCD_INI);
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delay(50000);
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xbox_lcd_output(X3LCD_FUNC_SET | X3LCD_DL_FLAG | X3LCD_N_FLAG, X3LCD_CMD);
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delay(50000);
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xbox_lcd_output(X3LCD_CONTROL | X3LCD_D_FLAG, X3LCD_CMD);
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delay(50000);
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xbox_lcd_output(X3LCD_CLEAR, X3LCD_CMD);
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delay(50000);
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xbox_lcd_output(X3LCD_ENTRY_MODE | X3LCD_ID_FLAG, X3LCD_CMD);
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delay(50000);
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/* xbox_lcd_setpos(0,0); */
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outb(X3LCD_O_LIGHT, 81);
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delay(50000);
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}
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void xbox_lcd_output(unsigned char data, unsigned char command)
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{
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unsigned char cmd = 0;
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int s;
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if (command & X3LCD_DAT)
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{
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cmd |= X3LCD_DISPCON_RS;
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}
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/* output upper nibble of data */
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/* outb(X3LCD_O_DAT, data & 0xF0); */
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/*
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outb(X3LCD_O_DAT, data);
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outb(X3LCD_O_CMD, cmd);
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outb(X3LCD_O_CMD, X3LCD_DISPCON_E | cmd);
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outb(X3LCD_O_CMD, cmd);
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*/
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s = splhigh();
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/* only if not init command */
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if ((command & X3LCD_INI) == 0)
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{
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/* output lower nibble of data */
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/* outb(X3LCD_O_DAT, (data << 4) & 0xF0); */
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outb(X3LCD_O_DAT, data);
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outb(X3LCD_O_CMD, cmd);
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outb(X3LCD_O_CMD, X3LCD_DISPCON_E | cmd);
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outb(X3LCD_O_CMD, cmd);
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}
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splx(s);
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delay(30000);
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}
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void xbox_lcd_writestring(char *lcdstring)
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{
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unsigned char i;
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do {
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i = *lcdstring;
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if ( i == 0x00)
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break;
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xbox_lcd_output(i, X3LCD_DAT);
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i = *lcdstring++;
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} while(1);
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}
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void xbox_lcd_writetext(const char *lcdtext)
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{
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unsigned char i;
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while ((i = *lcdtext++)) {
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if ((i > 31) && (i < 128)) {
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xbox_lcd_output(i, X3LCD_DAT);
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}
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}
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}
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void xbox_lcd_putchar(unsigned char data)
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{
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if ((data >= ' ') && (data <= '~')) {
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xbox_lcd_output(data, X3LCD_DAT);
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}
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}
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void xbox_lcd_setpos(unsigned int pos, unsigned int line)
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{
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xbox_lcd_output(X3LCD_DDRAM_SET | 0, X3LCD_CMD);
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}
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