From d0e8c57b779bbf96d84c5251465dc92303df5424 Mon Sep 17 00:00:00 2001
From: Linus Nielsen Feltzing <linus@haxx.se>
Date: Wed, 22 Mar 2006 09:50:35 +0000
Subject: Now the X5 LCD driver works as expected

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9177 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/coldfire/iaudio/x5/lcd-x5.c | 54 +++++++++++++++++++++++------
 1 file changed, 44 insertions(+), 10 deletions(-)

(limited to 'firmware/target/coldfire')

diff --git a/firmware/target/coldfire/iaudio/x5/lcd-x5.c b/firmware/target/coldfire/iaudio/x5/lcd-x5.c
index 0ac9f5576e..813e5b9e96 100755
--- a/firmware/target/coldfire/iaudio/x5/lcd-x5.c
+++ b/firmware/target/coldfire/iaudio/x5/lcd-x5.c
@@ -38,8 +38,45 @@ static bool display_on=false; /* is the display turned on? */
 #define R_RAM_ADDR_SET  0x21
 #define R_WRITE_DATA_2_GRAM 0x22
 
+/*****************************************************
+The tables below were generated by the following script:
+
+#!/usr/bin/perl
+
+# low byte table
+print "short low8to9[] = {\n";
+$str = "  ";
+for my $m (0 .. 255) {
+    # RRRRRGGG => RRRRR0GGG
+    my $v = (($m & 0xF8) << 1) | ($m & 0x07);
+    if(length($str) > 75) {
+        print "$str\n";
+        $str="  ";
+    }
+    $str .= sprintf("0x%03x, ", $v);
+}
+print "$str\n};\n";
+
+$str = "  ";
+# high byte table
+print "short high8to9[] = {\n";
+
+# high byte table
+for my $m (0 .. 255) {
+    # GGGBBBBB = GGGBBBBB0
+    my $v = (($m & 0xFF) << 1);
+    if(length($str) > 75) {
+        print "$str\n";
+        $str="  ";
+    }
+    $str .= sprintf("0x%03x, ", $v);
+}
+print "$str\n};\n";
+
+*****************************************************/
+
 /* Lookup tables for 16->18bit conversion */
-const short low8to9[] = {
+const short high8to9[] = {
   0x000, 0x001, 0x002, 0x003, 0x004, 0x005, 0x006, 0x007, 0x010, 0x011, 0x012,
   0x013, 0x014, 0x015, 0x016, 0x017, 0x020, 0x021, 0x022, 0x023, 0x024, 0x025,
   0x026, 0x027, 0x030, 0x031, 0x032, 0x033, 0x034, 0x035, 0x036, 0x037, 0x040,
@@ -65,7 +102,7 @@ const short low8to9[] = {
   0x1e2, 0x1e3, 0x1e4, 0x1e5, 0x1e6, 0x1e7, 0x1f0, 0x1f1, 0x1f2, 0x1f3, 0x1f4,
   0x1f5, 0x1f6, 0x1f7,
 } ICONST_ATTR;
-const short high8to9[] = {
+const short low8to9[] = {
   0x000, 0x002, 0x004, 0x006, 0x008, 0x00a, 0x00c, 0x00e, 0x010, 0x012, 0x014,
   0x016, 0x018, 0x01a, 0x01c, 0x01e, 0x020, 0x022, 0x024, 0x026, 0x028, 0x02a,
   0x02c, 0x02e, 0x030, 0x032, 0x034, 0x036, 0x038, 0x03a, 0x03c, 0x03e, 0x040,
@@ -172,9 +209,9 @@ void lcd_init_device(void)
     
     lcd_write_reg(0x0d, 0x0401);
     lcd_write_reg(0x0e, 0x321e);
-    lcd_write_reg(0x01, 0x0113);
+    lcd_write_reg(0x01, 0x0313);
     lcd_write_reg(0x02, 0x0700);
-    lcd_write_reg(0x05, 0x9018);
+    lcd_write_reg(0x05, 0x9038);
     lcd_write_reg(0x06, 0x0000);
     lcd_write_reg(0x0b, 0x4000);
     
@@ -189,7 +226,7 @@ void lcd_init_device(void)
     lcd_write_reg(0x35,0x0704);
     lcd_write_reg(0x36,0x0407);
     lcd_write_reg(0x37,0x0503);
-    lcd_write_reg(0x0f,0x0000);
+    lcd_write_reg(0x0f,0x0002);
     lcd_write_reg(0x11,0x0000);
     lcd_write_reg(0x14,0x9f00);
     lcd_write_reg(0x15,0x5c00);
@@ -290,10 +327,7 @@ void lcd_update_rect(int x, int y, int width, int height)
         } 
 
         /* reset update window */ 
-        /* horiz ram addr: 0 - 175 */ 
-        lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0xaf00); 
-
-        /* vert ram addr: 0 - 219 */  
-        lcd_write_reg(R_VERT_RAM_ADDR_POS, 0xdb00); 
+        lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00);
+        lcd_write_reg(R_VERT_RAM_ADDR_POS, 0x9f00);
     }
 }
-- 
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