diff options
Diffstat (limited to 'sys/arch/luna88k/dev/lcd.c')
| -rw-r--r-- | sys/arch/luna88k/dev/lcd.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/sys/arch/luna88k/dev/lcd.c b/sys/arch/luna88k/dev/lcd.c new file mode 100644 index 00000000000..cfba031871c --- /dev/null +++ b/sys/arch/luna88k/dev/lcd.c @@ -0,0 +1,173 @@ +/* $OpenBSD: lcd.c,v 1.1 2004/04/21 15:23:52 aoyama Exp $ */ +/* $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. + */ + +/* Taken from NetBSD/luna68k */ + +/* + * 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 unsigned : 24; + volatile u_int8_t portB; + volatile unsigned : 24; + volatile u_int8_t portC; + volatile unsigned : 24; + volatile u_int8_t cntrl; + volatile unsigned : 24; +}; + +void lcdbusywait(void); +void lcdput(int); +void lcdctrl(int); +void lcdshow(const char *); +void greeting(void); + /* "1234567890123456" */ +static const char lcd_boot_message1[] = "OpenBSD/luna88k "; +static const 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) + const 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); +} |