pxa_lcd: make driver cache-aware

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>

drivers/video/pxa_lcd.c

@@ -353,6 +353,9 @@ void lcd_ctrl_init (void *lcdbase)
 	pxafb_init(&panel_info);
 	pxafb_setup_gpio(&panel_info);
 	pxafb_enable_controller(&panel_info);
+
+	/* Enable flushing if we enabled dcache */
+	lcd_set_flush_dcache(1);
 }
 
 /*----------------------------------------------------------------------*/
@@ -565,6 +568,10 @@ static int pxafb_init (vidinfo_t *vid)
 	fbi->dmadesc_fblow->fidr  = 0;
 	fbi->dmadesc_fblow->ldcmd = BYTES_PER_PANEL;
 
+	flush_dcache_range((u32)fbi->dmadesc_fblow,
+			   (u32)fbi->dmadesc_fblow +
+			   sizeof(*fbi->dmadesc_fblow));
+
 	fbi->fdadr1 = (u_long)fbi->dmadesc_fblow; /* only used in dual-panel mode */
 
 	fbi->dmadesc_fbhigh->fsadr = fbi->screen;
@@ -580,11 +587,20 @@ static int pxafb_init (vidinfo_t *vid)
 		/* assume any mode with <12 bpp is palette driven */
 		fbi->dmadesc_palette->fdadr = (u_long)fbi->dmadesc_fbhigh;
 		fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_palette;
+		flush_dcache_range((u32)fbi->dmadesc_fbhigh,
+				   (u32)fbi->dmadesc_fbhigh +
+				   sizeof(*fbi->dmadesc_fbhigh));
+		flush_dcache_range((u32)fbi->dmadesc_palette,
+				   (u32)fbi->dmadesc_palette +
+				   sizeof(*fbi->dmadesc_palette));
 		/* flips back and forth between pal and fbhigh */
 		fbi->fdadr0 = (u_long)fbi->dmadesc_palette;
 	}
 	else
 	{
+		flush_dcache_range((u32)fbi->dmadesc_fbhigh,
+				   (u32)fbi->dmadesc_fbhigh +
+				   sizeof(*fbi->dmadesc_fbhigh));
 		/* palette shouldn't be loaded in true-color mode */
 		fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_fbhigh;
 		fbi->fdadr0 = (u_long)fbi->dmadesc_fbhigh; /* no pal just fbhigh */