dtv-scan-tables.git - dtv-scan-tables Debian packaging

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/* $Id: drv_M50530.c,v 1.7 2004/06/01 06:45:29 reinelt Exp $ * * new style driver for M50530-based displays * * Copyright 1999-2004 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: drv_M50530.c,v $ * Revision 1.7 2004/06/01 06:45:29 reinelt * * some Fixme's processed * documented some code * * Revision 1.6 2004/05/31 05:38:02 reinelt * * fixed possible bugs with user-defined chars (clear high bits) * thanks to Andy Baxter for debugging the MilfordInstruments driver! * * Revision 1.5 2004/05/29 15:53:28 reinelt * * M50530: reset parport signals on exit * plugin_ppp: ppp() has two parameters, not three * lcd4linux.conf.sample: diskstats() corrected * * Revision 1.4 2004/05/26 11:37:36 reinelt * * Curses driver ported. * * Revision 1.3 2004/03/19 09:17:46 reinelt * * removed the extra 'goto' function, row and col are additional parameters * of the write() function now. * * Revision 1.2 2004/02/15 21:43:43 reinelt * T6963 driver nearly finished * framework for graphic displays done * i2c_sensors patch from Xavier * some more old generation files removed * * Revision 1.1 2004/02/15 08:22:47 reinelt * ported USBLCD driver to NextGeneration * added drv_M50530.c (I forgot yesterday, sorry) * removed old drivers M50530.c and USBLCD.c * */ /* * * exported fuctions: * * struct DRIVER drv_M50530 * */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <unistd.h> #include <termios.h> #include <fcntl.h> #include <sys/time.h> #include "debug.h" #include "cfg.h" #include "udelay.h" #include "plugin.h" #include "widget.h" #include "widget_text.h" #include "widget_icon.h" #include "widget_bar.h" #include "drv.h" #include "drv_generic_text.h" #include "drv_generic_parport.h" static char Name[]="M50530"; static int Model; static unsigned char SIGNAL_EX; static unsigned char SIGNAL_IOC1; static unsigned char SIGNAL_IOC2; static unsigned char SIGNAL_GPO; // Fixme: GPO's not yet implemented static int GPOS; // static int GPO=0; typedef struct { int type; char *name; } MODEL; static MODEL Models[] = { { 0x01, "generic" }, { 0xff, "Unknown" } }; // **************************************** // *** hardware dependant functions *** // **************************************** static void drv_M5_command (unsigned int cmd, int delay) { // put data on DB1..DB8 drv_generic_parport_data (cmd&0xff); // set I/OC1 // set I/OC2 drv_generic_parport_control (SIGNAL_IOC1|SIGNAL_IOC2, (cmd&0x200?SIGNAL_IOC1:0) | (cmd&0x100?SIGNAL_IOC2:0)); // Control data setup time ndelay(200); // send command // EX signal pulse width = 500ns // Fixme: why 500 ns? Datasheet says 200ns drv_generic_parport_toggle (SIGNAL_EX, 1, 500); // wait udelay(delay); } static void drv_M5_write (int row, int col, unsigned char *data, int len) { unsigned int cmd; unsigned int pos; pos=row*48+col; if (row>3) pos-=168; drv_M5_command (0x300|pos, 20); while (len--) { cmd=*data++; drv_M5_command (0x100|cmd, 20); } } static void drv_M5_defchar (int ascii, unsigned char *matrix) { int i; drv_M5_command (0x300+192+8*(ascii-CHAR0), 20); // Fixme: looks like the M50530 cannot control the bottom line // therefore we have only 7 bytes here for (i=0; i<7; i++) { drv_M5_command (0x100|(matrix[i] & 0x3f), 20); } } // Fixme: GPO's #if 0 static void drv_M5_setGPO (int bits) { if (Lcd.gpos>0) { // put data on DB1..DB8 drv_generic_parport_data (bits); // 74HCT573 set-up time ndelay(20); // send data // 74HCT573 enable pulse width = 24ns drv_generic_parport_toggle (SIGNAL_GPO, 1, 24); } } #endif static int drv_M5_start (char *section) { char *model, *s; int rows=-1, cols=-1, gpos=-1; model=cfg_get(section, "Model", "generic"); if (model!=NULL && *model!='\0') { int i; for (i=0; Models[i].type!=0xff; i++) { if (strcasecmp(Models[i].name, model)==0) break; } if (Models[i].type==0xff) { error ("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source()); return -1; } Model=i; info ("%s: using model '%s'", Name, Models[Model].name); } else { error ("%s: empty '%s.Model' entry from %s", Name, section, cfg_source()); return -1; } s=cfg_get(section, "Size", NULL); if (s==NULL || *s=='\0') { error ("%s: no '%s.Size' entry from %s", Name, section, cfg_source()); return -1; } if (sscanf(s,"%dx%d",&cols,&rows)!=2 || rows<1 || cols<1) { error ("%s: bad size '%s'", Name, s); return -1; } if (cfg_number(section, "GPOs", 0, 0, 8, &gpos)<0) return -1; info ("%s: controlling %d GPO's", Name, gpos); DROWS = rows; DCOLS = cols; GPOS = gpos; if (drv_generic_parport_open(section, Name) != 0) { error ("%s: could not initialize parallel port!", Name); return -1; } if ((SIGNAL_EX = drv_generic_parport_wire_ctrl ("EX", "STROBE"))==0xff) return -1; if ((SIGNAL_IOC1 = drv_generic_parport_wire_ctrl ("IOC1", "SELECT"))==0xff) return -1; if ((SIGNAL_IOC2 = drv_generic_parport_wire_ctrl ("IOC2", "AUTOFD"))==0xff) return -1; if ((SIGNAL_GPO = drv_generic_parport_wire_ctrl ("GPO", "INIT" ))==0xff) return -1; // clear all signals drv_generic_parport_control (SIGNAL_EX|SIGNAL_IOC1|SIGNAL_IOC2|SIGNAL_GPO, 0); // set direction: write drv_generic_parport_direction (0); drv_M5_command (0x00FA, 20); // set function mode drv_M5_command (0x0020, 20); // set display mode drv_M5_command (0x0050, 20); // set entry mode drv_M5_command (0x0030, 20); // set display mode drv_M5_command (0x0001, 1250); // clear display return 0; } // **************************************** // *** plugins *** // **************************************** // none at the moment // **************************************** // *** widget callbacks *** // **************************************** // using drv_generic_text_draw(W) // using drv_generic_text_icon_draw(W) // using drv_generic_text_bar_draw(W) // **************************************** // *** exported functions *** // **************************************** // list models int drv_M5_list (void) { int i; for (i=0; Models[i].type!=0xff; i++) { printf ("%s ", Models[i].name); } return 0; } // initialize driver & display int drv_M5_init (char *section) { WIDGET_CLASS wc; int ret; // display preferences XRES = 5; // pixel width of one char YRES = 8; // pixel height of one char CHARS = 8; // number of user-defineable characters CHAR0 = 248; // ASCII of first user-defineable char GOTO_COST = 1; // number of bytes a goto command requires // real worker functions drv_generic_text_real_write = drv_M5_write; drv_generic_text_real_defchar = drv_M5_defchar; // start display if ((ret=drv_M5_start (section))!=0) return ret; // initialize generic text driver if ((ret=drv_generic_text_init(section, Name))!=0) return ret; // initialize generic icon driver if ((ret=drv_generic_text_icon_init())!=0) return ret; // initialize generic bar driver if ((ret=drv_generic_text_bar_init(0))!=0) return ret; // add fixed chars to the bar driver drv_generic_text_bar_add_segment (0,0,255,32); // ASCII 32 = blank // register text widget wc=Widget_Text; wc.draw=drv_generic_text_draw; widget_register(&wc); // register icon widget wc=Widget_Icon; wc.draw=drv_generic_text_icon_draw; widget_register(&wc); // register bar widget wc=Widget_Bar; wc.draw=drv_generic_text_bar_draw; widget_register(&wc); // register plugins // none at the moment return 0; } // close driver & display int drv_M5_quit (void) { info("%s: shutting down.", Name); // clear all signals drv_generic_parport_control (SIGNAL_EX|SIGNAL_IOC1|SIGNAL_IOC2|SIGNAL_GPO, 0); drv_generic_parport_close(); drv_generic_text_quit(); return (0); } DRIVER drv_M50530 = { name: Name, list: drv_M5_list, init: drv_M5_init, quit: drv_M5_quit, };


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