f28fd51814
found to be tweaked. Need extensive verifications. - Add wsmouse node under ws; not useful this moment.
171 lines
4.2 KiB
C
171 lines
4.2 KiB
C
/* $NetBSD: lcd.c,v 1.2 2000/01/07 05:13:08 nisimura Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Tohru Nishimura.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: lcd.c,v 1.2 2000/01/07 05:13:08 nisimura Exp $");
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/*
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* XXX
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* Following code segments are subject to change.
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* XXX
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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/device.h>
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#define PIO1_MODE_OUTPUT 0x84
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#define PIO1_MODE_INPUT 0x94
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#define POWER 0x10
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#define ENABLE 0x80
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#define DISABLE 0x00
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#define WRITE_CMD (0x00 | 0x00)
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#define WRITE_DATA (0x00 | 0x40)
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#define READ_BUSY (0x20 | 0x00)
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#define READ_DATA (0x20 | 0x40)
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#define LCD_INIT 0x38
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#define LCD_ENTRY 0x06
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#define LCD_ON 0x0c
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#define LCD_CLS 0x01
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#define LCD_HOME 0x02
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#define LCD_LOCATE(X, Y) (((Y) & 1 ? 0xc0 : 0x80) | ((X) & 0x0f))
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struct pio {
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volatile u_int8_t portA;
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volatile u_int8_t portB;
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volatile u_int8_t portC;
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volatile u_int8_t cntrl;
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};
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void lcdbusywait __P((void));
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void lcdput __P((int));
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void lcdctrl __P((int));
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void lcdshow __P((char *));
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void greeting __P((void));
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/* "1234567890123456" */
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static char lcd_boot_message1[] = " NetBSD/luna68k ";
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static char lcd_boot_message2[] = " SX-9100/DT ";
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void
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lcdbusywait()
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{
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struct pio *p1 = (struct pio *)0x4D000000;
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int msb, s;
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s = splhigh();
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p1->cntrl = PIO1_MODE_INPUT;
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p1->portC = POWER | READ_BUSY | ENABLE;
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splx(s);
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do {
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msb = p1->portA & ENABLE;
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delay(5);
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} while (msb != 0);
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s = splhigh();
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p1->portC = POWER | READ_BUSY | DISABLE;
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splx(s);
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}
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void
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lcdput(cc)
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int cc;
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{
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struct pio *p1 = (struct pio *)0x4D000000;
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int s;
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lcdbusywait();
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s = splhigh();
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p1->cntrl = PIO1_MODE_OUTPUT;
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p1->portC = POWER | WRITE_DATA | ENABLE;
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p1->portA = cc;
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p1->portC = POWER | WRITE_DATA | DISABLE;
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splx(s);
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}
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void
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lcdctrl(cc)
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int cc;
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{
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struct pio *p1 = (struct pio *)0x4D000000;
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int s;
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lcdbusywait();
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s = splhigh();
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p1->cntrl = PIO1_MODE_OUTPUT;
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p1->portC = POWER | WRITE_CMD | ENABLE;
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p1->portA = cc;
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p1->portC = POWER | WRITE_CMD | DISABLE;
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splx(s);
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}
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void
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lcdshow(s)
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char *s;
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{
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int cc;
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while ((cc = *s++) != '\0')
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lcdput(cc);
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}
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void
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greeting()
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{
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lcdctrl(LCD_INIT);
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lcdctrl(LCD_ENTRY);
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lcdctrl(LCD_ON);
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lcdctrl(LCD_CLS);
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lcdctrl(LCD_HOME);
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lcdctrl(LCD_LOCATE(0, 0));
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lcdshow(lcd_boot_message1);
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lcdctrl(LCD_LOCATE(0, 1));
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lcdshow(lcd_boot_message2);
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}
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