GigabeatFX: Change the way that the LCD copy routine works: Do the copy and translation in one step.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20195 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 11 insertions, 10 deletions

diff --git a/firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c b/firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c
index 6288079..d9a28d1 100644
--- a/firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c
+++ b/firmware/target/arm/s3c2440/gigabeat-fx/lcd-meg-fx.c
@@ -246,22 +246,23 @@ void lcd_init_device(void)
 {
 #ifdef BOOTLOADER
     int i;
-    /* When the Rockbox bootloader starts, we are changing framebuffer address,
-       but we don't want what's shown on the LCD to change until we do an
-       lcd_update(), so copy the data from the old framebuffer to the new one */
-    unsigned short *buf = (unsigned short*)FRAME;
-
-    memcpy(FRAME, (short *)((LCDSADDR1)<<1), 320*240*2);
+    /* When the Rockbox bootloader starts the framebuffer address is changed
+     * but the LCD display should stay the same til an lcd_update() occurs.
+     * This copies the data from the old framebuffer to the new one to make the
+     * change non-visable to the user.
+     */
+    unsigned short *buf     = (unsigned short*)(FRAME);
+    unsigned short *oldbuf  = (unsigned short*)(LCDSADDR1<<1);
 
     /* The Rockbox bootloader is transitioning from RGB555I to RGB565 mode
        so convert the frambuffer data accordingly */
-    for(i=0; i< 320*240; i++){
-        *buf = ((*buf>>1) & 0x1F) | (*buf & 0xffc0);
-        buf++;
+    for(i=0; i< 320*240; i++)
+    {
+        *(buf++) = ((*oldbuf>>1) & 0x1F) | (*oldbuf & 0xffc0);
+        oldbuf++;
     }
 #endif
 
-
     /* Set pins up */
 
     GPHUP   &= 0x600;