Speed up the Fuze's LCD by a factor of ~2.1 (lcd_update()) by using 32bit transfers when possible.

Unaligned (to 4byte boundary) and odd (where the amount of data is not an integer multiple of 32bit) are still supported. Even those still have a speedup of >2.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22574 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 4 insertions, 1 deletions

diff --git a/firmware/export/as3525.h b/firmware/export/as3525.h
index cf8d11ba05..d2b5a4fef2 100644
--- a/firmware/export/as3525.h
+++ b/firmware/export/as3525.h
@@ -114,7 +114,10 @@
 #define DBOP_TIMPOL_23    (*(volatile unsigned long *)(DBOP_BASE + 0x04))
 #define DBOP_CTRL         (*(volatile unsigned long *)(DBOP_BASE + 0x08))
 #define DBOP_STAT         (*(volatile unsigned long *)(DBOP_BASE + 0x0C))
-#define DBOP_DOUT         (*(volatile unsigned short *)(DBOP_BASE + 0x10))
+/* default is 16bit, but we switch to 32bit for some targets for better speed */
+#define DBOP_DOUT         (*(volatile unsigned short*)(DBOP_BASE + 0x10))
+#define DBOP_DOUT16       (*(volatile unsigned short*)(DBOP_BASE + 0x10))
+#define DBOP_DOUT32       (*(volatile unsigned long *)(DBOP_BASE + 0x10))
 #define DBOP_DIN          (*(volatile unsigned short*)(DBOP_BASE + 0x14))