[lcd4linux @ 2004-02-15 21:43:43 by reinelt]

T6963 driver nearly finished
framework for graphic displays done
i2c_sensors patch from Xavier
some more old generation files removed

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@367 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 498 insertions, 0 deletions

diff --git a/drv_T6963.c b/drv_T6963.c
new file mode 100644
index 0000000..2706805
--- /dev/null
+++ b/drv_T6963.c
@@ -0,0 +1,498 @@
+/* $Id: drv_T6963.c,v 1.1 2004/02/15 21:43:43 reinelt Exp $
+ *
+ * new style driver for T6963-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_T6963.c,v $
+ * Revision 1.1  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
+ *
+ */
+
+/* 
+ *
+ * exported fuctions:
+ *
+ * struct DRIVER drv_T6963
+ *
+ */
+
+#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_graphic.h"
+#include "drv_generic_parport.h"
+
+static char Name[]="T6963";
+static int Model;
+
+typedef struct {
+  int type;
+  char *name;
+} MODEL;
+
+static MODEL Models[] = {
+  { 0x01, "generic" },
+  { 0xff, "Unknown" }
+};
+
+
+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;
+
+
+// ****************************************
+// ***  hardware dependant functions    ***
+// ****************************************
+
+// perform normal status check
+static void drv_T6_status1 (void)
+{
+  int n;
+  
+  // turn off data line drivers
+  drv_generic_parport_direction (1);
+  
+  // lower CE and RD
+  drv_generic_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 ((drv_generic_parport_read() & 0x03) != 0x03);
+  
+  // rise RD and CE
+  drv_generic_parport_control (SIGNAL_RD | SIGNAL_CE, SIGNAL_RD | SIGNAL_CE);
+  
+  // Output Hold Time: 50 ns 
+  ndelay(50);
+  
+  // turn on data line drivers
+  drv_generic_parport_direction (0);
+}
+
+
+// perform status check in "auto mode"
+static void drv_T6_status2 (void)
+{
+  int n;
+
+  // turn off data line drivers
+  drv_generic_parport_direction (1);
+  
+  // lower RD and CE
+  drv_generic_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 ((drv_generic_parport_read() & 0x08) != 0x08);
+
+  // rise RD and CE
+  drv_generic_parport_control (SIGNAL_RD | SIGNAL_CE, SIGNAL_RD | SIGNAL_CE);
+
+  // Output Hold Time: 50 ns 
+  ndelay(50);
+
+  // turn on data line drivers
+  drv_generic_parport_direction (0);
+}
+
+
+static void drv_T6_write_cmd (unsigned char cmd)
+{
+  // wait until the T6963 is idle
+  drv_T6_status1();
+
+  // put data on DB1..DB8
+  drv_generic_parport_data (cmd);
+  
+  // lower WR and CE
+  drv_generic_parport_control (SIGNAL_WR | SIGNAL_CE, 0);
+  
+  // Pulse width
+  ndelay(80);
+
+  // rise WR and CE
+  drv_generic_parport_control (SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
+
+  // Data Hold Time
+  ndelay(40);
+}
+
+
+static void drv_T6_write_data (unsigned char data)
+{
+  // wait until the T6963 is idle
+  drv_T6_status1();
+
+  // put data on DB1..DB8
+  drv_generic_parport_data (data);
+
+  // lower C/D
+  drv_generic_parport_control (SIGNAL_CD, 0);
+  
+  // C/D Setup Time
+  ndelay(20);
+
+  // lower WR and CE
+  drv_generic_parport_control (SIGNAL_WR | SIGNAL_CE, 0);
+  
+  // Pulse Width
+  ndelay(80);
+  
+  // rise WR and CE
+  drv_generic_parport_control (SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
+  
+  // Data Hold Time
+  ndelay(40);
+
+  // rise CD
+  drv_generic_parport_control (SIGNAL_CD, SIGNAL_CD);
+}
+
+
+static void drv_T6_write_auto (unsigned char data)
+{
+  // wait until the T6963 is idle
+  drv_T6_status2();
+
+  // put data on DB1..DB8
+  drv_generic_parport_data (data);
+
+  // lower C/D
+  drv_generic_parport_control (SIGNAL_CD, 0);
+  
+  // C/D Setup Time
+  ndelay(20);
+
+  // lower WR and CE
+  drv_generic_parport_control (SIGNAL_WR | SIGNAL_CE, 0);
+  
+  // Pulse Width
+  ndelay(80);
+  
+  // rise WR and CE
+  drv_generic_parport_control (SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
+  
+  // Data Hold Time
+  ndelay(40);
+
+  // rise CD
+  drv_generic_parport_control (SIGNAL_CD, SIGNAL_CD);
+}
+
+
+#if 0 // not used
+static void drv_T6_send_byte (unsigned char cmd, unsigned char data)
+{
+  drv_T6_write_data(data);
+  drv_T6_write_cmd(cmd);
+}
+#endif
+
+static void drv_T6_send_word (unsigned char cmd, unsigned short data)
+{
+  drv_T6_write_data(data&0xff);
+  drv_T6_write_data(data>>8);
+  drv_T6_write_cmd(cmd);
+}
+
+
+static void drv_T6_memset(unsigned short addr, unsigned char data, int len)
+{
+  int i;
+  
+  drv_T6_send_word (0x24, addr);      // Set Adress Pointer
+  drv_T6_write_cmd(0xb0);             // Set Data Auto Write
+  for (i=0; i<len; i++) {
+    drv_T6_write_auto(data);
+    if (bug) {
+      bug=0;
+      debug("bug occured at byte %d of %d", i, len);
+    }
+  }
+  drv_T6_status2();
+  drv_T6_write_cmd(0xb2);             // Auto Reset
+}
+
+
+static void drv_T6_memcpy(unsigned short addr, unsigned char *data, int len)
+{
+  int i;
+  
+  drv_T6_send_word (0x24, 0x0200+addr);  // Set Adress Pointer
+  drv_T6_write_cmd(0xb0);                // Set Data Auto Write
+  for (i=0; i<len; i++) {
+    drv_T6_write_auto(*(data++));
+    if (bug) {
+      bug=0;
+      debug("bug occured at byte %d of %d, addr=%d", i, len, addr);
+    }
+  }
+  drv_T6_status2();
+  drv_T6_write_cmd(0xb2);                // Auto Reset
+}
+
+
+static int drv_T6_start (char *section)
+{
+  char *model, *s;
+  int rows, cols;
+  
+  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;
+  }
+
+  DROWS = -1;
+  DCOLS = -1;
+  if (sscanf(s, "%dx%d", &DCOLS, &DROWS)!=2 || DCOLS<1 || DROWS<1) {
+    error ("%s: bad Size '%s' from %s", Name, s, cfg_source());
+    return -1;
+  }
+  
+  s=cfg_get(section, "Font", "6x8");
+  if (s==NULL || *s=='\0') {
+    error ("%s: no '%s.Font' entry from %s", Name, section, cfg_source());
+    return -1;
+  }
+
+  XRES = -1;
+  YRES = -1;
+  if (sscanf(s, "%dx%d", &XRES, &YRES)!=2 || XRES<1 || YRES<1) {
+    error ("%s: bad Font '%s' from %s", Name, s, cfg_source());
+    return -1;
+  }
+  
+  if (drv_generic_parport_open(section, Name) != 0) {
+    error ("%s: could not initialize parallel port!", Name);
+    return -1;
+  }
+  
+  if ((SIGNAL_CE=drv_generic_parport_wire_ctrl ("CE", "STROBE"))==0xff) return -1;
+  if ((SIGNAL_CD=drv_generic_parport_wire_ctrl ("CD", "SELECT"))==0xff) return -1;
+  if ((SIGNAL_RD=drv_generic_parport_wire_ctrl ("RD", "AUTOFD"))==0xff) return -1;
+  if ((SIGNAL_WR=drv_generic_parport_wire_ctrl ("WR", "INIT")  )==0xff) return -1;
+  
+  // rise CE, CD, RD and WR
+  drv_generic_parport_control (SIGNAL_CE | SIGNAL_CD | SIGNAL_RD | SIGNAL_WR,
+			       SIGNAL_CE | SIGNAL_CD | SIGNAL_RD | SIGNAL_WR);
+  // set direction: write
+  drv_generic_parport_direction (0);
+  
+  // initialize display
+  
+  rows=DROWS/8; // text rows, assume 6x8 font
+  cols=DCOLS/6; // text cols, assume 6x8 font
+
+  drv_T6_send_word (0x40, 0x0000);    // Set Text Home Address
+  drv_T6_send_word (0x41, cols);      // Set Text Area
+  
+  drv_T6_send_word (0x42, 0x0200);    // Set Graphic Home Address
+  drv_T6_send_word (0x43, cols);      // Set Graphic Area
+  
+  drv_T6_write_cmd (0x80);            // Mode Set: OR mode, Internal CG RAM mode
+  drv_T6_send_word (0x22, 0x0002);    // Set Offset Register
+  drv_T6_write_cmd (0x98);            // Set Display Mode: Curser off, Text off, Graphics on
+  drv_T6_write_cmd (0xa0);            // Set Cursor Pattern: 1 line cursor
+  drv_T6_send_word (0x21, 0x0000);    // Set Cursor Pointer to (0,0)
+  
+  
+  // clear display
+  
+  // upper half
+  if (rows>8) rows=8;
+  drv_T6_memset(0x0000, 0, cols*rows);    // clear text area 
+  drv_T6_memset(0x0200, 0, cols*rows*8);  // clear graphic area
+  
+  // lower half
+  if (DROWS>8*8) {
+    rows=DROWS/8-8;
+    drv_T6_memset(0x8000, 0, cols*rows);    // clear text area #2
+    drv_T6_memset(0x8200, 0, cols*rows*8);  // clear graphic area #2
+  }
+  
+  return 0;
+}
+
+
+// ****************************************
+// ***            plugins               ***
+// ****************************************
+
+// none at the moment...
+
+
+// ****************************************
+// ***        widget callbacks          ***
+// ****************************************
+
+
+// using drv_generic_graphic_draw(W)
+// using drv_generic_graphic_icon_draw(W)
+// using drv_generic_graphic_bar_draw(W)
+
+
+// ****************************************
+// ***        exported functions        ***
+// ****************************************
+
+
+// list models
+int drv_T6_list (void)
+{
+  int i;
+  
+  for (i=0; Models[i].type!=0xff; i++) {
+    printf ("%s ", Models[i].name);
+  }
+  return 0;
+}
+
+
+// initialize driver & display
+int drv_T6_init (char *section)
+{
+  WIDGET_CLASS wc;
+  int ret;  
+  
+  // display preferences
+  GOTO_COST = 2;  // number of bytes a goto command requires
+  
+  // real worker functions
+  // Fixme: which one?
+  // drv_generic_text_real_write   = drv_T6_write;
+  // drv_generic_text_real_goto    = drv_T6_goto;
+  // drv_generic_text_real_defchar = drv_T6_defchar;
+  
+  // start display
+  if ((ret=drv_T6_start (section))!=0)
+    return ret;
+  
+  // initialize generic graphic driver
+  if ((ret=drv_generic_graphic_init(section, Name))!=0)
+    return ret;
+  
+  // register text widget
+  wc=Widget_Text;
+  wc.draw=drv_generic_graphic_draw;
+  widget_register(&wc);
+
+  // register icon widget
+  wc=Widget_Icon;
+  wc.draw=drv_generic_graphic_icon_draw;
+  widget_register(&wc);
+  
+  // register bar widget
+  wc=Widget_Bar;
+  wc.draw=drv_generic_graphic_bar_draw;
+  widget_register(&wc);
+  
+  // register plugins
+  // none at the moment...
+
+
+  return 0;
+}
+
+
+// close driver & display
+int drv_T6_quit (void) {
+
+  info("%s: shutting down.", Name);
+  drv_generic_parport_close();
+  drv_generic_graphic_quit();
+  
+  return (0);
+}
+
+
+DRIVER drv_T6963 = {
+  name: Name,
+  list: drv_T6_list,
+  init: drv_T6_init,
+  quit: drv_T6_quit, 
+};
+
+