From e28d0cad12698102e3e9ce200cd79f57f9fcf3a6 Mon Sep 17 00:00:00 2001
From: reinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>
Date: Thu, 10 Aug 2006 19:06:52 +0000
Subject: [lcd4linux @ 2006-08-10 19:06:52 by reinelt] new 'fuzz' parameter for
 timings

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@686 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
---
 lcd4linux.conf.sample | 24 ++++++++++++++++++++++--
 udelay.c              | 20 ++++++++++++++++----
 2 files changed, 38 insertions(+), 6 deletions(-)

diff --git a/lcd4linux.conf.sample b/lcd4linux.conf.sample
index 884eb84..6a76170 100644
--- a/lcd4linux.conf.sample
+++ b/lcd4linux.conf.sample
@@ -157,6 +157,8 @@ Display HD44780-winamp {
 	POWER   'GND'
     }
     Timing {
+	# fuzz timings by value (100 = no change)
+	fuzz 100
 	# low-level communication [ns]
 	CY 1000  # Enable cycle time
 	PW  450  # Enable pulse width
@@ -178,6 +180,23 @@ Display HD44780-winamp {
     }
 }
 
+# HD44780 display 4-Bit mode
+Display HD44780-4bit {
+    Driver 'HD44780'
+    Model 'generic'
+    Port '/dev/parports/0'	
+    Size '16x1'
+    Bits 4
+    UseBusy 0
+    asc255bug 0
+    Wire {
+        RW     'GND'
+        RS     'DB4'
+        ENABLE 'DB6'
+        GPO    'GND'
+    }
+}
+
 # Dual-HD44780 display from Pollin
 Display WDC2704M {
     Driver 'HD44780'
@@ -1033,6 +1052,7 @@ Layout testMySQL {
 #Display 'CW12232'
 #Display 'HD44780-generic'
 #Display 'HD44780-WinAmp'
+#Display 'HD44780-4bit'
 #Display 'WDC2704M'
 #Display 'SC1602D'
 #Display 'LCM-162'
@@ -1040,7 +1060,7 @@ Layout testMySQL {
 #Display 'CF632'
 #Display 'CF633'
 #Display 'Curses'
-#Display 'M50530-24x8'
+Display 'M50530-24x8'
 #Display 'LCDTerm'
 #Display 'SimpleLCD'
 #Display 'BA63'
@@ -1051,7 +1071,7 @@ Layout testMySQL {
 #Display 'BWCT'
 #Display 'Image'
 #Display 'Trefon'
-Display 'LCD2USB'
+#Display 'LCD2USB'
 #Display 'LPH7508-serdisplib'
 #Display 'LPH7508'
 #Display 'ctinclud'
diff --git a/udelay.c b/udelay.c
index 82011db..14ccee9 100644
--- a/udelay.c
+++ b/udelay.c
@@ -1,4 +1,4 @@
-/* $Id: udelay.c,v 1.21 2005/12/12 09:08:08 reinelt Exp $
+/* $Id: udelay.c,v 1.22 2006/08/10 19:06:52 reinelt Exp $
  *
  * short delays
  *
@@ -23,6 +23,9 @@
  *
  *
  * $Log: udelay.c,v $
+ * Revision 1.22  2006/08/10 19:06:52  reinelt
+ * new 'fuzz' parameter for timings
+ *
  * Revision 1.21  2005/12/12 09:08:08  reinelt
  * finally removed old udelay code path; read timing values from config
  *
@@ -232,13 +235,22 @@ void udelay_init(void)
 unsigned long timing(const char *driver, const char *section, const char *name, const int defval, const char *unit)
 {
     char sec[256];
-    int ret, val;
+    int fuzz, val;
 
     qprintf(sec, sizeof(sec), "%s.Timing", section);
 
-    ret = cfg_number(sec, name, defval, 0, -1, &val);
+    /* fuzz all timings by given factor */
+    cfg_number(sec, "fuzz", 100, 1, -1, &fuzz);
+
+    cfg_number(sec, name, defval, 0, -1, &val);
+    val = val * fuzz / 100;
+    
     if (val != defval) {
-	info("%s: timing: %6s = %5d %s (default %d %s)", driver, name, val, unit, defval, unit);
+	if (fuzz != 100) {
+	    info("%s: timing: %6s = %5d %s (default %d %s, fuzz %d)", driver, name, val, unit, defval, unit, fuzz);
+	} else {
+	    info("%s: timing: %6s = %5d %s (default %d %s)", driver, name, val, unit, defval, unit);
+	}
     } else {
 	info("%s: timing: %6s = %5d %s (default)", driver, name, defval, unit);
     }
-- 
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