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/* $Id: layout.c,v 1.14 2004/06/26 12:04:59 reinelt Exp $
 *
 * new layouter framework
 *
 * Copyright 1999-2003 Michael Reinelt <reinelt@eunet.at>
 * Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * 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: layout.c,v $
 * Revision 1.14  2004/06/26 12:04:59  reinelt
 *
 * uh-oh... the last CVS log message messed up things a lot...
 *
 * Revision 1.13  2004/06/26 09:27:21  reinelt
 *
 * added '-W' to CFLAGS
 * changed all C++ comments to C ones
 * cleaned up a lot of signed/unsigned mistakes
 *
 * Revision 1.12  2004/06/20 10:09:56  reinelt
 *
 * 'const'ified the whole source
 *
 * Revision 1.11  2004/06/02 09:41:19  reinelt
 *
 * prepared support for startup splash screen
 *
 * Revision 1.10  2004/03/03 03:47:04  reinelt
 * big patch from Martin Hejl:
 * - use qprintf() where appropriate
 * - save CPU cycles on gettimeofday()
 * - add quit() functions to free allocated memory
 * - fixed lots of memory leaks
 *
 * Revision 1.9  2004/02/01 19:37:40  reinelt
 * got rid of every strtok() incarnation.
 *
 * Revision 1.8  2004/02/01 18:08:50  reinelt
 * removed strtok() from layout processing (took me hours to find this bug)
 * further strtok() removind should be done!
 *
 * Revision 1.7  2004/01/30 20:57:56  reinelt
 * HD44780 patch from Martin Hejl
 * dmalloc integrated
 *
 * Revision 1.6  2004/01/14 11:33:00  reinelt
 * new plugin 'uname' which does what it's called
 * text widget nearly finished
 * first results displayed on MatrixOrbital
 *
 * Revision 1.5  2004/01/13 08:18:19  reinelt
 * timer queues added
 * liblcd4linux deactivated turing transformation to new layout
 *
 * Revision 1.4  2004/01/12 03:51:01  reinelt
 * evaluating the 'Variables' section in the config file
 *
 * Revision 1.3  2004/01/11 18:26:02  reinelt
 * further widget and layout processing
 *
 * Revision 1.2  2004/01/11 09:26:15  reinelt
 * layout starts to exist...
 *
 * Revision 1.1  2004/01/10 20:22:33  reinelt
 * added new function 'cfg_list()' (not finished yet)
 * added layout.c (will replace processor.c someday)
 * added widget_text.c (will be the first and most important widget)
 * modified lcd4linux.c so that old-style configs should work, too
 *
 */

/* 
 * exported functions:
 *
 * layout_init (char *section)
 *    initializes the layouter
 *
 */

#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>

#include "debug.h"
#include "cfg.h"
#include "widget.h"
#include "layout.h"

#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif


int layout_addItem (const char *name, const int row, const int col)
{
  /* allocate widget */
  widget_add (name, row-1, col-1);
  return 0;
}


int layout_init (const char *layout)
{
  char *section;
  char *list, *l;
  char *widget;
  int row, col;
  
  info ("initializing layout '%s'", layout);
  
  /* prepare config section */
  /* strlen("Layout:")=7 */
  section=malloc(strlen(layout)+8);
  strcpy(section, "Layout:");
  strcat(section, layout);
  
  /* get a list of all keys in this section */
  list=cfg_list(section);

  /* map to lower char for scanf() */
  for (l=list; *l!='\0'; l++) *l=tolower(*l);

  l=list;
  while (l!=NULL) {
    char *p;
    int i, n;
    /* list is delimited by | */
    while (*l=='|') l++;
    if ((p=strchr(l, '|'))!=NULL) *p='\0';
    i=sscanf (l, "row%d.col%d%n", &row, &col, &n);
    if (i==2 && l[n]=='\0') {
      widget=cfg_get(section, l, NULL);
      if (widget!=NULL && *widget!='\0') {
        layout_addItem (widget, row, col);
      }
      free(widget);
    }
    /* next field */
    l=p?p+1:NULL;
  }
  free (list);
  free(section);
  return 0;
}
nd takes care of inverted signals * * void parport_toggle (unsigned char bit, int level, int delay) * toggles the line <bit> to <level> for <delay> nanoseconds * * void parport_data (unsigned char value) * put data bits on DB1..DB8 * * unsigned char parport_read (void) * reads a byte from the parallel port * * void parport_debug(void) * prints status of control lines */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <time.h> #include <errno.h> #include <sys/ioctl.h> #ifdef HAVE_SYS_IO_H #include <sys/io.h> #define WITH_OUTB #else #ifdef HAVE_ASM_IO_H #include <asm/io.h> #define WITH_OUTB #endif #endif #if defined (HAVE_LINUX_PARPORT_H) && defined (HAVE_LINUX_PPDEV_H) #define WITH_PPDEV #include <linux/parport.h> #include <linux/ppdev.h> #else #define PARPORT_CONTROL_STROBE 0x1 #define PARPORT_CONTROL_AUTOFD 0x2 #define PARPORT_CONTROL_INIT 0x4 #define PARPORT_CONTROL_SELECT 0x8 #endif #if !defined(WITH_OUTB) && !defined(WITH_PPDEV) #error neither outb() nor ppdev() possible #error cannot compile parallel port driver #endif #include "debug.h" #include "cfg.h" #include "udelay.h" #include "parport.h" static unsigned short Port=0; static char *PPdev=NULL; // initial value taken from linux/parport_pc.c static unsigned char ctr = 0xc; #ifdef WITH_PPDEV static int PPfd=-1; #endif int parport_open (void) { char *s, *e; #ifdef USE_OLD_UDELAY s=cfg_get ("Delay",NULL); if (s==NULL || *s=='\0') { error ("parport: no 'Delay' entry in %s", cfg_source()); return -1; } if ((loops_per_usec=strtol(s, &e, 0))==0 || *e!='\0') { error ("parport: bad delay '%s' in %s", s, cfg_source()); return -1; } #else udelay_init(); #endif s=cfg_get ("Port",NULL); if (s==NULL || *s=='\0') { error ("parport: no 'Port' entry in %s", cfg_source()); return -1; } PPdev=NULL; if ((Port=strtol(s, &e, 0))==0 || *e!='\0') { #ifdef WITH_PPDEV Port=0; PPdev=s; #else error ("parport: bad Port '%s' in %s", s, cfg_source()); return -1; #endif } #ifdef WITH_PPDEV if (PPdev) { debug ("using ppdev %s", PPdev); PPfd=open(PPdev, O_RDWR); if (PPfd==-1) { error ("parport: open(%s) failed: %s", PPdev, strerror(errno)); return -1; } #if 0 // Fixme 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 ("parport: ioctl(%s, PPCLAIM) failed: %d %s", PPdev, errno, strerror(errno)); return -1; } } else #endif { debug ("using raw port 0x%x", Port); if ((Port+3)<=0x3ff) { if (ioperm(Port, 3, 1)!=0) { error ("parport: ioperm(0x%x) failed: %s", Port, strerror(errno)); return -1; } } else { if (iopl(3)!=0) { error ("parport: iopl(1) failed: %s", strerror(errno)); return -1; } } } return 0; } int parport_close (void) { #ifdef WITH_PPDEV if (PPdev) { debug ("closing ppdev %s", PPdev); if (ioctl(PPfd, PPRELEASE)) { error ("parport: ioctl(%s, PPRELEASE) failed: %s", PPdev, strerror(errno)); } if (close(PPfd)==-1) { error ("parport: close(%s) failed: %s", PPdev, strerror(errno)); return -1; } } else #endif { debug ("closing raw port 0x%x", Port); if ((Port+3)<=0x3ff) { if (ioperm(Port, 3, 0)!=0) { error ("parport: ioperm(0x%x) failed: %s", Port, strerror(errno)); return -1; } } else { if (iopl(0)!=0) { error ("parport: iopl(0) failed: %s", strerror(errno)); return -1; } } } return 0; } unsigned char parport_wire_ctrl (char *name, unsigned char *deflt) { unsigned char w; char wire[256]; char *s; snprintf (wire, sizeof(wire), "Wire.%s", name); s=cfg_get (wire,deflt); if (strcasecmp(s,"STROBE")==0) { w=PARPORT_CONTROL_STROBE; } else if(strcasecmp(s,"AUTOFD")==0) { w=PARPORT_CONTROL_AUTOFD; } else if(strcasecmp(s,"INIT")==0) { w=PARPORT_CONTROL_INIT; } else if(strcasecmp(s,"SELECT")==0) { w=PARPORT_CONTROL_SELECT; } else if(strcasecmp(s,"GND")==0) { w=0; } else { error ("parport: unknown signal <%s> for wire <%s>", s, name); error (" should be STROBE, AUTOFD, INIT, SELECT or GND"); return 0xff; } if (w&PARPORT_CONTROL_STROBE) { info ("wiring: [DISPLAY:%s]<==>[PARPORT:STROBE]", name); } if (w&PARPORT_CONTROL_AUTOFD) { info ("wiring: [DISPLAY:%s]<==>[PARPORT:AUTOFD]", name); } if (w&PARPORT_CONTROL_INIT) { info ("wiring: [DISPLAY:%s]<==>[PARPORT:INIT]", name); } if (w&PARPORT_CONTROL_SELECT) { info ("wiring: [DISPLAY:%s]<==>[PARPORT:SELECT]", name); } if (w==0) { info ("wiring: [DISPLAY:%s]<==>[PARPORT:GND]", name); } return w; } unsigned char parport_wire_data (char *name, unsigned char *deflt) { unsigned char w; char wire[256]; char *s; snprintf (wire, sizeof(wire), "Wire.%s", name); s=cfg_get (wire,deflt); if(strlen(s)==3 && strncasecmp(s,"DB",2)==0 && s[2]>='0' && s[2]<='7') { w=s[2]-'0'; } else if(strcasecmp(s,"GND")==0) { w=0; } else { error ("parport: unknown signal <%s> for wire <%s>", s, name); error (" should be DB..7 or GND"); return 0xff; } if (w==0) { info ("wiring: [DISPLAY:%s]<==>[PARPORT:GND]", name); } else { info ("wiring: [DISPLAY:%s]<==>[PARPORT:DB%d]", name, w); } w=1<<w; return w; } void parport_direction (int direction) { #ifdef WITH_PPDEV if (PPdev) { ioctl (PPfd, PPDATADIR, &direction); } else #endif { // code stolen from linux/parport_pc.h ctr = (ctr & ~0x20) ^ (direction?0x20:0x00); outb (ctr, Port+2); } } void parport_control (unsigned char mask, unsigned char value) { // any signal affected? // Note: this may happen in case a signal is hardwired to GND if (mask==0) return; // Strobe, Select and AutoFeed are inverted! value = mask & (value ^ (PARPORT_CONTROL_STROBE|PARPORT_CONTROL_SELECT|PARPORT_CONTROL_AUTOFD)); #ifdef WITH_PPDEV if (PPdev) { struct ppdev_frob_struct frob; frob.mask=mask; frob.val=value; ioctl (PPfd, PPFCONTROL, &frob); } else #endif { // code stolen from linux/parport_pc.h ctr = (ctr & ~mask) ^ value; outb (ctr, Port+2); } } void parport_toggle (unsigned char bits, int level, int delay) { unsigned char value1, value2; // any signal affected? // Note: this may happen in case a signal is hardwired to GND if (bits==0) return; // prepare value value1=level?bits:0; value2=level?0:bits; // Strobe, Select and AutoFeed are inverted! value1 = bits & (value1 ^ (PARPORT_CONTROL_STROBE|PARPORT_CONTROL_SELECT|PARPORT_CONTROL_AUTOFD)); value2 = bits & (value2 ^ (PARPORT_CONTROL_STROBE|PARPORT_CONTROL_SELECT|PARPORT_CONTROL_AUTOFD)); #ifdef WITH_PPDEV if (PPdev) { struct ppdev_frob_struct frob; frob.mask=bits; // rise frob.val=value1; ioctl (PPfd, PPFCONTROL, &frob); // pulse width ndelay(delay); // lower frob.val=value2; ioctl (PPfd, PPFCONTROL, &frob); } else #endif { // rise ctr = (ctr & ~bits) ^ value1; outb (ctr, Port+2); // pulse width ndelay(delay); // lower ctr = (ctr & ~bits) ^ value2; outb (ctr, Port+2); } } void parport_data (unsigned char data) { #ifdef WITH_PPDEV if (PPdev) { ioctl(PPfd, PPWDATA, &data); } else #endif { outb (data, Port); } } unsigned char parport_read (void) { unsigned char data; #ifdef WITH_PPDEV if (PPdev) { ioctl (PPfd, PPRDATA, &data); } else #endif { data=inb (Port); } return data; } void parport_debug(void) { unsigned char control; ioctl (PPfd, PPRCONTROL, &control); debug ("%cSTROBE %cAUTOFD %cINIT %cSELECT", control & PARPORT_CONTROL_STROBE ? '-':'+', control & PARPORT_CONTROL_AUTOFD ? '-':'+', control & PARPORT_CONTROL_INIT ? '+':'-', control & PARPORT_CONTROL_SELECT ? '-':'+'); }