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