From 9463b103078c3c5d63f5e532c7db150638234cf4 Mon Sep 17 00:00:00 2001 From: reinelt Date: Tue, 11 Sep 2001 05:31:37 +0000 Subject: [lcd4linux @ 2001-09-11 05:31:37 by reinelt] M50530 driver git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@145 3ae390bd-cb1e-0410-b409-cd5a39f66f1f --- M50530.c | 669 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 669 insertions(+) create mode 100644 M50530.c diff --git a/M50530.c b/M50530.c new file mode 100644 index 0000000..e7f39cc --- /dev/null +++ b/M50530.c @@ -0,0 +1,669 @@ +/* $Id: M50530.c,v 1.1 2001/09/11 05:31:37 reinelt Exp $ + * + * driver for display modules based on the M50530 chip + * + * Copyright 1999, 2000 by Michael Reinelt (reinelt@eunet.at) + * + * This program 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. + * + * This program 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: M50530.c,v $ + * Revision 1.1 2001/09/11 05:31:37 reinelt + * M50530 driver + * + * + */ + +/* + * + * exported fuctions: + * + * struct LCD M50530[] + * + */ + +#include "config.h" + +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef HAVE_SYS_IO_H +#include +#define WITH_OUTB +#else +#ifdef HAVE_ASM_IO_H +#include +#define WITH_OUTB +#endif +#endif + +#if defined (HAVE_LINUX_PARPORT_H) && defined (HAVE_LINUX_PPDEV_H) +#define WITH_PPDEV +#include +#include +#endif + + +#if !defined(WITH_OUTB) && !defined(WITH_PPDEV) +#error neither outb() nor ppdev() possible +#error cannot compile M50530 driver +#endif + +#include "debug.h" +#include "cfg.h" +#include "display.h" +#include "udelay.h" + +#define XRES 5 +#define YRES 8 +#define CHARS 8 +#define BARS ( BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2 ) + +typedef struct { + int len1; + int len2; + int type; + int segment; +} BAR; + +typedef struct { + int len1; + int len2; + int type; + int used; + int ascii; +} SEGMENT; + +static LCD Lcd; + + +static unsigned short Port=0; + +static char *PPdev=NULL; + +#ifdef WITH_PPDEV +static int PPfd=-1; +#endif + +static char Txt[8][40]; +static BAR Bar[8][40]; +static int GPO=0; + +static int nSegment=1; +static SEGMENT Segment[128] = {{ len1:0, len2:0, type:255, used:0, ascii:32 }}; + +static void M5_command (unsigned int cmd, int delay) +{ +#ifdef WITH_PPDEV + if (PPdev) { + + unsigned char data; + struct ppdev_frob_struct frob; + + // set I/OC1 (Select inverted) + // set I/OC2 (AutoFeed inverted) + frob.mask=PARPORT_CONTROL_SELECT | PARPORT_CONTROL_AUTOFD; + frob.val=0; + if (!(cmd & 0x200)) { + frob.val|=PARPORT_CONTROL_SELECT; + } + if (!(cmd & 0x100)) { + frob.val|=PARPORT_CONTROL_AUTOFD; + } + ioctl (PPfd, PPFCONTROL, &frob); + + // rise EX (Strobe, inverted) + frob.mask=PARPORT_CONTROL_STROBE; + frob.val=0; + ioctl (PPfd, PPFCONTROL, &frob); + + // put data on DB1..DB8 + data=cmd&0xff; + ioctl(PPfd, PPWDATA, &data); + + // lower EX (Strobe, inverted) + frob.mask=PARPORT_CONTROL_STROBE; + frob.val=PARPORT_CONTROL_STROBE; + ioctl (PPfd, PPFCONTROL, &frob); + + // wait + udelay(delay); + + } else + +#endif + + { + // Fixme: not implemented + } +} + +static void M5_write (unsigned char *string, int len) +{ + unsigned int cmd; + + while (len--) { + cmd=*string++; + M5_command (0x100|cmd, 20); + } +} + +static void M5_setGPO (int bits) +{ + if (Lcd.gpos>0) { + +#ifdef WITH_PPDEV + + if (PPdev) { + + struct ppdev_frob_struct frob; + + // put data on DB1..DB8 + ioctl(PPfd, PPWDATA, &bits); + + // toggle INIT + frob.mask=PARPORT_CONTROL_INIT; + frob.val=PARPORT_CONTROL_INIT; // rise + ioctl (PPfd, PPFCONTROL, &frob); + udelay(1); + frob.val=0; // lower + ioctl (PPfd, PPFCONTROL, &frob); + + } else + +#endif + + { + // Fixme: not implemented + } + } +} + +static int M5_open (void) +{ +#ifdef WITH_PPDEV + + if (PPdev) { + debug ("using ppdev %s", PPdev); + PPfd=open(PPdev, O_RDWR); + if (PPfd==-1) { + error ("open(%s) failed: %s", PPdev, strerror(errno)); + return -1; + } + +#if 0 + if (ioctl(PPfd, PPEXCL)) { + debug ("ioctl(%s, PPEXCL) failed: %s", PPdev, strerror(errno)); + } else { + debug ("ioctl(%s, PPEXCL) succeded."); + } +#endif + + if (ioctl(PPfd, PPCLAIM)) { + error ("ioctl(%s, PPCLAIM) failed: %d %s", PPdev, errno, strerror(errno)); + return -1; + } + } else + +#endif + + { + debug ("using raw port 0x%x", Port); + if (ioperm(Port, 3, 1)!=0) { + error ("M50530: ioperm(0x%x) failed: %s", Port, strerror(errno)); + return -1; + } + } + + M5_command (0x00FA, 20); // set function mode + M5_command (0x0020, 20); // set display mode + M5_command (0x0050, 20); // set entry mode + M5_command (0x0030, 20); // set display mode + M5_command (0x0001, 1250); // clear display + + return 0; +} + +static void M5_process_bars (void) +{ + int row, col; + int i, j; + + for (i=1; i=RES && Segment[j].len1=RES && Segment[j].len2RES) i1=RES; + i2=Segment[i].len2; if (i2>RES) i2=RES; + j1=Segment[j].len1; if (j1>RES) i1=RES; + j2=Segment[j].len2; if (j2>RES) i2=RES; + + return (i1-i2)*(i1-i2)+(j1-j2)*(j1-j2); +} + +static void M5_compact_bars (void) +{ + int i, j, r, c, min; + int pack_i, pack_j; + int pass1=1; + int deviation[nSegment][nSegment]; + + if (nSegment>CHARS+1) { + + for (i=1; iCHARS+1) { + min=65535; + pack_i=-1; + pack_j=-1; + for (i=2; i8) { + error ("M50530: bad GPOs '%s' in %s", s, cfg_file()); + return -1; + } + + Self->rows=rows; + Self->cols=cols; + Self->gpos=gpos; + Lcd=*Self; + +#ifndef USE_OLD_UDELAY + udelay_init(); +#endif + + if (M5_open()!=0) + return -1; + + M5_clear(); + + return 0; +} + +void M5_goto (int row, int col) +{ + int pos; + + pos=row*48+col; + if (row>3) pos-=168; + M5_command (0x300|pos, 20); +} + +int M5_put (int row, int col, char *text) +{ + char *p=&Txt[row][col]; + char *t=text; + + while (*t && col++<=Lcd.cols) { + *p++=*t++; + } + return 0; +} + +int M5_bar (int type, int row, int col, int max, int len1, int len2) +{ + int rev=0; + + if (len1<1) len1=1; + else if (len1>max) len1=max; + + if (len2<1) len2=1; + else if (len2>max) len2=max; + + switch (type) { + case BAR_L: + len1=max-len1; + len2=max-len2; + rev=1; + + case BAR_R: + while (max>0 && col<=Lcd.cols) { + Bar[row][col].type=type; + Bar[row][col].segment=-1; + if (len1>=XRES) { + Bar[row][col].len1=rev?0:XRES; + len1-=XRES; + } else { + Bar[row][col].len1=rev?XRES-len1:len1; + len1=0; + } + if (len2>=XRES) { + Bar[row][col].len2=rev?0:XRES; + len2-=XRES; + } else { + Bar[row][col].len2=rev?XRES-len2:len2; + len2=0; + } + max-=XRES; + col++; + } + break; + + case BAR_U: + len1=max-len1; + len2=max-len2; + rev=1; + + case BAR_D: + while (max>0 && row<=Lcd.rows) { + Bar[row][col].type=type; + Bar[row][col].segment=-1; + if (len1>=YRES) { + Bar[row][col].len1=rev?0:YRES; + len1-=YRES; + } else { + Bar[row][col].len1=rev?YRES-len1:len1; + len1=0; + } + if (len2>=YRES) { + Bar[row][col].len2=rev?0:YRES; + len2-=YRES; + } else { + Bar[row][col].len2=rev?YRES-len2:len2; + len2=0; + } + max-=YRES; + row++; + } + break; + + } + return 0; +} + +int M5_gpo (int num, int val) +{ + if (num>=Lcd.gpos) + return -1; + + if (val) { + GPO |= 1<