From 5b7a150807f7a709c335d3cc25d1f0cfc678cb46 Mon Sep 17 00:00:00 2001
From: Bertrik Sikken <bertrik@sikken.nl>
Date: Fri, 2 Sep 2011 19:57:29 +0000
Subject: [PATCH] sansa clipzip: add lcd_brightness function (to be used later
 to set the 'backlight' brightness)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30410 a1c6a512-1295-4272-9138-f99709370657
---
 .../arm/as3525/sansa-clipzip/lcd-clipzip.c    | 19 ++++++++++++-
 .../arm/as3525/sansa-clipzip/lcd-target.h     | 27 +++++++++++++++++++
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 firmware/target/arm/as3525/sansa-clipzip/lcd-target.h

diff --git a/firmware/target/arm/as3525/sansa-clipzip/lcd-clipzip.c b/firmware/target/arm/as3525/sansa-clipzip/lcd-clipzip.c
index 49241c10d2..c3f81fb989 100644
--- a/firmware/target/arm/as3525/sansa-clipzip/lcd-clipzip.c
+++ b/firmware/target/arm/as3525/sansa-clipzip/lcd-clipzip.c
@@ -22,6 +22,7 @@
 #include "config.h"
 
 #include "lcd.h"
+#include "lcd-target.h"
 #include "system.h"
 #include "cpu.h"
 
@@ -154,7 +155,7 @@ static void lcd_init_type0(void)
 /* writes a table entry (for type 1 LCDs) */
 static void lcd_write_table(uint8_t val)
 {
-    lcd_write_dat((val >> 4) & 0x07);
+    lcd_write_dat((val >> 4) & 0x0F);
     lcd_write_dat((val >> 0) & 0x0F);
 }
 
@@ -354,6 +355,22 @@ static void lcd_setup_rect(int x, int x_end, int y, int y_end)
     }
 }
 
+/* sets the brightness of the OLED */
+void lcd_brightness(uint8_t red, uint8_t green, uint8_t blue)
+{
+    if (lcd_type == 0) {
+        lcd_write(0x40, red);
+        lcd_write(0x41, green);
+        lcd_write(0x42, blue);
+    }
+    else {
+        lcd_write_cmd(0x0E);
+        lcd_write_table(red);
+        lcd_write_table(green);
+        lcd_write_table(blue);
+    }
+}
+
 /* Updates a fraction of the display. */
 void lcd_update_rect(int x, int y, int width, int height)
 {
diff --git a/firmware/target/arm/as3525/sansa-clipzip/lcd-target.h b/firmware/target/arm/as3525/sansa-clipzip/lcd-target.h
new file mode 100644
index 0000000000..137e9731dd
--- /dev/null
+++ b/firmware/target/arm/as3525/sansa-clipzip/lcd-target.h
@@ -0,0 +1,27 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2011 Bertrik Sikken
+ *
+ * This program 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
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdint.h>
+#include "config.h"
+
+/* target-specific OLED brightness function */
+void lcd_brightness(uint8_t red, uint8_t green, uint8_t blue);
+