[ARM] pxafb: add flag to specify output format on LDD pins when base is RGBT16

Another fix of inconsistent shift of the LCD_BIAS_ACTIVE_* and
LCD_PCLK_EDGE_* is also included.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/include/mach/pxafb.h

@@ -28,6 +28,7 @@
  * bits 10-17 : for AC Bias Pin Frequency
  * bit     18 : for output enable polarity
  * bit     19 : for pixel clock edge
+ * bit     20 : for output pixel format when base is RGBT16
  */
 #define LCD_CONN_TYPE(_x)	((_x) & 0x0f)
 #define LCD_CONN_WIDTH(_x)	(((_x) >> 4) & 0x1f)
@@ -53,10 +54,11 @@
 #define LCD_SMART_PANEL_18BPP	((18 << 4) | LCD_TYPE_SMART_PANEL)
 
 #define LCD_AC_BIAS_FREQ(x)	(((x) & 0xff) << 10)
-#define LCD_BIAS_ACTIVE_HIGH	(0 << 17)
-#define LCD_BIAS_ACTIVE_LOW	(1 << 17)
-#define LCD_PCLK_EDGE_RISE	(0 << 18)
-#define LCD_PCLK_EDGE_FALL	(1 << 18)
+#define LCD_BIAS_ACTIVE_HIGH	(0 << 18)
+#define LCD_BIAS_ACTIVE_LOW	(1 << 18)
+#define LCD_PCLK_EDGE_RISE	(0 << 19)
+#define LCD_PCLK_EDGE_FALL	(1 << 19)
+#define LCD_ALTERNATE_MAPPING	(1 << 20)
 
 /*
  * This structure describes the machine which we are running on.

drivers/video/pxafb.c

@@ -1402,6 +1402,8 @@ static void pxafb_decode_mach_info(struct pxafb_info *fbi,
 	if (lcd_conn == LCD_MONO_STN_8BPP)
 		fbi->lccr0 |= LCCR0_DPD;
 
+	fbi->lccr0 |= (lcd_conn & LCD_ALTERNATE_MAPPING) ? LCCR0_LDDALT : 0;
+
 	fbi->lccr3 = LCCR3_Acb((inf->lcd_conn >> 10) & 0xff);
 	fbi->lccr3 |= (lcd_conn & LCD_BIAS_ACTIVE_LOW) ? LCCR3_OEP : 0;
 	fbi->lccr3 |= (lcd_conn & LCD_PCLK_EDGE_FALL)  ? LCCR3_PCP : 0;