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-rw-r--r--T6963.c511
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-/* $Id: T6963.c,v 1.15 2004/01/30 20:57:55 reinelt Exp $
- *
- * driver for display modules based on the Toshiba T6963 chip
- *
- * Copyright 1999, 2000 Michael Reinelt <reinelt@eunet.at>
- *
- * This file is part of LCD4Linux.
- *
- * LCD4Linux 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, or (at your option)
- * any later version.
- *
- * LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * $Log: T6963.c,v $
- * Revision 1.15 2004/01/30 20:57:55 reinelt
- * HD44780 patch from Martin Hejl
- * dmalloc integrated
- *
- * Revision 1.14 2004/01/09 04:16:06 reinelt
- * added 'section' argument to cfg_get(), but NULLed it on all calls by now.
- *
- * Revision 1.13 2003/10/05 17:58:50 reinelt
- * libtool junk; copyright messages cleaned up
- *
- * Revision 1.12 2003/09/29 06:12:56 reinelt
- * changed default HD44780 wiring: unused signals are GND
- *
- * Revision 1.11 2003/09/13 06:45:43 reinelt
- * icons for all remaining drivers
- *
- * Revision 1.10 2003/08/16 07:31:35 reinelt
- * double buffering in all drivers
- *
- * Revision 1.9 2003/08/15 07:54:07 reinelt
- * HD44780 4 bit mode implemented
- *
- * Revision 1.8 2003/08/01 05:15:42 reinelt
- * last cleanups for 0.9.9
- *
- * Revision 1.7 2003/07/24 04:48:09 reinelt
- * 'soft clear' needed for virtual rows
- *
- * Revision 1.6 2003/04/07 06:03:00 reinelt
- * further parallel port abstraction
- *
- * Revision 1.5 2003/02/22 07:53:10 reinelt
- * cfg_get(key,defval)
- *
- * Revision 1.4 2002/08/21 06:09:53 reinelt
- * some T6963 fixes, ndelay wrap
- *
- * Revision 1.3 2002/08/19 04:41:20 reinelt
- * introduced bar.c, moved bar stuff from display.h to bar.h
- *
- * Revision 1.2 2002/08/17 12:54:08 reinelt
- * minor T6963 changes
- *
- * Revision 1.1 2002/04/29 11:00:26 reinelt
- *
- * added Toshiba T6963 driver
- * added ndelay() with nanosecond resolution
- *
- *
- */
-
-/*
- *
- * exported fuctions:
- *
- * struct LCD T6963[]
- *
- */
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-
-#include "debug.h"
-#include "cfg.h"
-#include "display.h"
-#include "bar.h"
-#include "icon.h"
-#include "parport.h"
-#include "udelay.h"
-#include "pixmap.h"
-
-#ifdef WITH_DMALLOC
-#include <dmalloc.h>
-#endif
-
-
-#define XRES 6
-#define YRES 8
-
-static LCD Lcd;
-static int Icons;
-
-unsigned char *Buffer1, *Buffer2;
-
-static unsigned char SIGNAL_CE;
-static unsigned char SIGNAL_CD;
-static unsigned char SIGNAL_RD;
-static unsigned char SIGNAL_WR;
-
-
-// Fixme:
-static int bug=0;
-
-// perform normal status check
-void T6_status1 (void)
-{
- int n;
-
- // turn off data line drivers
- parport_direction (1);
-
- // lower CE and RD
- parport_control (SIGNAL_CE | SIGNAL_RD, 0);
-
- // Access Time: 150 ns
- ndelay(150);
-
- // wait for STA0=1 and STA1=1
- n=0;
- do {
- rep_nop();
- if (++n>1000) {
- debug("hang in status1");
- bug=1;
- break;
- }
- } while ((parport_read() & 0x03) != 0x03);
-
- // rise RD and CE
- parport_control (SIGNAL_RD | SIGNAL_CE, SIGNAL_RD | SIGNAL_CE);
-
- // Output Hold Time: 50 ns
- ndelay(50);
-
- // turn on data line drivers
- parport_direction (0);
-}
-
-
-// perform status check in "auto mode"
-void T6_status2 (void)
-{
- int n;
-
- // turn off data line drivers
- parport_direction (1);
-
- // lower RD and CE
- parport_control (SIGNAL_RD | SIGNAL_CE, 0);
-
- // Access Time: 150 ns
- ndelay(150);
-
- // wait for STA3=1
- n=0;
- do {
- rep_nop();
- if (++n>1000) {
- debug("hang in status2");
- bug=1;
- break;
- }
- } while ((parport_read() & 0x08) != 0x08);
-
- // rise RD and CE
- parport_control (SIGNAL_RD | SIGNAL_CE, SIGNAL_RD | SIGNAL_CE);
-
- // Output Hold Time: 50 ns
- ndelay(50);
-
- // turn on data line drivers
- parport_direction (0);
-}
-
-
-static void T6_write_cmd (unsigned char cmd)
-{
- // wait until the T6963 is idle
- T6_status1();
-
- // put data on DB1..DB8
- parport_data (cmd);
-
- // lower WR and CE
- parport_control (SIGNAL_WR | SIGNAL_CE, 0);
-
- // Pulse width
- ndelay(80);
-
- // rise WR and CE
- parport_control (SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
-
- // Data Hold Time
- ndelay(40);
-}
-
-
-static void T6_write_data (unsigned char data)
-{
- // wait until the T6963 is idle
- T6_status1();
-
- // put data on DB1..DB8
- parport_data (data);
-
- // lower C/D
- parport_control (SIGNAL_CD, 0);
-
- // C/D Setup Time
- ndelay(20);
-
- // lower WR and CE
- parport_control (SIGNAL_WR | SIGNAL_CE, 0);
-
- // Pulse Width
- ndelay(80);
-
- // rise WR and CE
- parport_control (SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
-
- // Data Hold Time
- ndelay(40);
-
- // rise CD
- parport_control (SIGNAL_CD, SIGNAL_CD);
-}
-
-
-static void T6_write_auto (unsigned char data)
-{
- // wait until the T6963 is idle
- T6_status2();
-
- // put data on DB1..DB8
- parport_data (data);
-
- // lower C/D
- parport_control (SIGNAL_CD, 0);
-
- // C/D Setup Time
- ndelay(20);
-
- // lower WR and CE
- parport_control (SIGNAL_WR | SIGNAL_CE, 0);
-
- // Pulse Width
- ndelay(80);
-
- // rise WR and CE
- parport_control (SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
-
- // Data Hold Time
- ndelay(40);
-
- // rise CD
- parport_control (SIGNAL_CD, SIGNAL_CD);
-}
-
-
-#if 0 // not used
-static void T6_send_byte (unsigned char cmd, unsigned char data)
-{
- T6_write_data(data);
- T6_write_cmd(cmd);
-}
-#endif
-
-static void T6_send_word (unsigned char cmd, unsigned short data)
-{
- T6_write_data(data&0xff);
- T6_write_data(data>>8);
- T6_write_cmd(cmd);
-}
-
-
-static void T6_memset(unsigned short addr, unsigned char data, int len)
-{
- int i;
-
- T6_send_word (0x24, addr); // Set Adress Pointer
- T6_write_cmd(0xb0); // Set Data Auto Write
- for (i=0; i<len; i++) {
- T6_write_auto(data);
- if (bug) {
- debug("bug occured at byte %d of %d", i, len);
- bug=0;
- }
- }
- T6_status2();
- T6_write_cmd(0xb2); // Auto Reset
-}
-
-
-static void T6_memcpy(unsigned short addr, unsigned char *data, int len)
-{
- int i;
-
- T6_send_word (0x24, 0x0200+addr); // Set Adress Pointer
- T6_write_cmd(0xb0); // Set Data Auto Write
- for (i=0; i<len; i++) {
- T6_write_auto(*(data++));
- if (bug) {
- debug("bug occured at byte %d of %d, addr=%d", i, len, addr);
- bug=0;
- }
- }
- T6_status2();
- T6_write_cmd(0xb2); // Auto Reset
-}
-
-
-int T6_clear (int full)
-{
- int rows;
-
- if (full) {
-
- rows=(Lcd.rows>8 ? 8 : Lcd.rows);
-
- T6_memset(0x0000, 0, Lcd.cols*rows); // clear text area
- T6_memset(0x0200, 0, Lcd.cols*rows*8); // clear graphic area
-
- if (Lcd.rows>8) {
- T6_memset(0x8000, 0, Lcd.cols*(Lcd.rows-rows)); // clear text area #2
- T6_memset(0x8200, 0, Lcd.cols*(Lcd.rows-rows)*8); // clear graphic area #2
- }
-
- memset(Buffer1,0,Lcd.cols*Lcd.rows*Lcd.yres*sizeof(*Buffer1));
- memset(Buffer2,0,Lcd.cols*Lcd.rows*Lcd.yres*sizeof(*Buffer2));
- }
-
- return pix_clear();
-}
-
-
-int T6_init (LCD *Self)
-{
- Lcd=*Self;
-
- if (pix_init (Lcd.rows, Lcd.cols, Lcd.xres, Lcd.yres)!=0) {
- error ("T6963: pix_init(%d, %d, %d, %d) failed", Lcd.rows, Lcd.cols, Lcd.xres, Lcd.yres);
- return -1;
- }
-
- if (cfg_number(NULL, "Icons", 0, 0, 8, &Icons) < 0) return -1;
- if (Icons>0) {
- info ("allocating %d icons", Icons);
- icon_init(Lcd.rows, Lcd.cols, Lcd.xres, Lcd.yres, 8, Icons, pix_icon);
- Self->icons=Icons;
- Lcd.icons=Icons;
- }
-
- Buffer1=malloc(Lcd.cols*Lcd.rows*Lcd.yres);
- if (Buffer1==NULL) {
- error ("T6963: malloc(%d) failed: %s", Lcd.cols*Lcd.rows*Lcd.yres, strerror(errno));
- return -1;
- }
-
- Buffer2=malloc(Lcd.cols*Lcd.rows*Lcd.yres);
- if (Buffer2==NULL) {
- error ("T6963: malloc(%d) failed: %s", Lcd.cols*Lcd.rows*Lcd.yres, strerror(errno));
- return -1;
- }
-
- if ((SIGNAL_CE=parport_wire_ctrl ("CE", "STROBE"))==0xff) return -1;
- if ((SIGNAL_CD=parport_wire_ctrl ("CD", "SELECT"))==0xff) return -1;
- if ((SIGNAL_RD=parport_wire_ctrl ("RD", "AUTOFD"))==0xff) return -1;
- if ((SIGNAL_WR=parport_wire_ctrl ("WR", "INIT") )==0xff) return -1;
-
- if (parport_open() != 0) {
- error ("T6963: could not initialize parallel port!");
- return -1;
- }
-
- // rise CE, CD, RD and WR
- parport_control (SIGNAL_CE | SIGNAL_CD | SIGNAL_RD | SIGNAL_WR,
- SIGNAL_CE | SIGNAL_CD | SIGNAL_RD | SIGNAL_WR);
-
- // set direction: write
- parport_direction (0);
-
- debug ("setting %d columns", Lcd.cols);
-
- T6_send_word (0x40, 0x0000); // Set Text Home Address
- T6_send_word (0x41, Lcd.cols); // Set Text Area
-
- T6_send_word (0x42, 0x0200); // Set Graphic Home Address
- T6_send_word (0x43, Lcd.cols); // Set Graphic Area
-
- T6_write_cmd (0x80); // Mode Set: OR mode, Internal CG RAM mode
- T6_send_word (0x22, 0x0002); // Set Offset Register
- T6_write_cmd (0x98); // Set Display Mode: Curser off, Text off, Graphics on
- T6_write_cmd (0xa0); // Set Cursor Pattern: 1 line cursor
- T6_send_word (0x21, 0x0000); // Set Cursor Pointer to (0,0)
-
- T6_clear(1);
-
- return 0;
-}
-
-
-int T6_put (int row, int col, char *text)
-{
- return pix_put(row,col,text);
-}
-
-
-int T6_bar (int type, int row, int col, int max, int len1, int len2)
-{
- return pix_bar(type,row,col,max,len1,len2);
-}
-
-
-int T6_icon (int num, int seq, int row, int col)
-{
- return icon_draw (num, seq, row, col);
-}
-
-
-int T6_flush (void)
-{
- int i, j, e;
-
- memset(Buffer1,0,Lcd.cols*Lcd.rows*Lcd.yres*sizeof(*Buffer1));
-
- for (i=0; i<Lcd.cols*Lcd.rows*Lcd.yres; i++) {
- for (j=0; j<Lcd.xres; j++) {
- Buffer1[i]<<=1;
- if (LCDpixmap[i*Lcd.xres+j]) Buffer1[i]|=1;
- }
- }
-
- for (i=0; i<Lcd.cols*Lcd.rows*Lcd.yres; i++) {
- if (Buffer1[i]==Buffer2[i]) continue;
- for (j=i, e=0; i<Lcd.cols*Lcd.rows*Lcd.yres; i++) {
- if (Buffer1[i]==Buffer2[i]) {
- if (++e>4) break;
- } else {
- e=0;
- }
- }
- T6_memcpy (j, Buffer1+j, i-j-e+1);
- }
-
- memcpy(Buffer2,Buffer1,Lcd.cols*Lcd.rows*Lcd.yres*sizeof(*Buffer1));
-
- return 0;
-}
-
-
-int T6_quit (void)
-{
- return parport_close();
-}
-
-
-LCD T6963[] = {
- { name: "TLC1091",
- rows: 16,
- cols: 40,
- xres: 6,
- yres: 8,
- bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2 | BAR_V2 | BAR_T,
- icons: 0,
- gpos: 0,
- init: T6_init,
- clear: T6_clear,
- put: T6_put,
- bar: T6_bar,
- icon: T6_icon,
- gpo: NULL,
- flush: T6_flush,
- quit: T6_quit
- },
- { name: "DMF5002N",
- rows: 14,
- cols: 16,
- xres: 8,
- yres: 8,
- bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2 | BAR_V2 | BAR_T,
- icons: 0,
- gpos: 0,
- init: T6_init,
- clear: T6_clear,
- put: T6_put,
- bar: T6_bar,
- icon: T6_icon,
- gpo: NULL,
- flush: T6_flush,
- quit: T6_quit
- },
- { NULL }
-};
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