From 2f620b8af336d65a7f48f131b1a78ecb0487de36 Mon Sep 17 00:00:00 2001
From: Bertrik Sikken <bertrik@sikken.nl>
Date: Wed, 20 Jul 2011 22:05:16 +0000
Subject: ipod nano 1g: enable LCD invert

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30182 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/export/config/ipodnano1g.h       |  3 +++
 firmware/target/arm/ipod/lcd-color_nano.c | 11 +++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/firmware/export/config/ipodnano1g.h b/firmware/export/config/ipodnano1g.h
index e321d070cb..9dba533744 100644
--- a/firmware/export/config/ipodnano1g.h
+++ b/firmware/export/config/ipodnano1g.h
@@ -58,6 +58,9 @@
 #define LCD_DEPTH  16   /* 65536 colours */
 #define LCD_PIXELFORMAT RGB565SWAPPED /* rgb565 byte-swapped */
 
+/* define this if you can invert the colours on your LCD */
+#define HAVE_LCD_INVERT
+
 /* Define this if the LCD can shut down */
 #define HAVE_LCD_SHUTDOWN
 
diff --git a/firmware/target/arm/ipod/lcd-color_nano.c b/firmware/target/arm/ipod/lcd-color_nano.c
index d7e3beb197..589e8654ae 100644
--- a/firmware/target/arm/ipod/lcd-color_nano.c
+++ b/firmware/target/arm/ipod/lcd-color_nano.c
@@ -66,24 +66,31 @@ static void lcd_cmd_data(unsigned cmd, unsigned data)
 
 /*** hardware configuration ***/
 
+#ifdef HAVE_LCD_CONTRAST
 void lcd_set_contrast(int val)
 {
   /* TODO: Implement lcd_set_contrast() */
   (void)val;
 }
+#endif
 
+#ifdef HAVE_LCD_INVERT
 void lcd_set_invert_display(bool yesno)
 {
-  /* TODO: Implement lcd_set_invert_display() */
-  (void)yesno;
+#ifdef IPOD_NANO    /* this has only been tested on the ipod nano */
+    lcd_cmd_data(0x07, 0x73 | (yesno ? 0 : (1<<2)));
+#endif
 }
+#endif
 
+#ifdef HAVE_LCD_FLIP
 /* turn the display upside down (call lcd_update() afterwards) */
 void lcd_set_flip(bool yesno)
 {
   /* TODO: Implement lcd_set_flip() */
   (void)yesno;
 }
+#endif
 
 /* LCD init */
 void lcd_init_device(void)
-- 
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