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authorNicolas Ferre <nicolas.ferre@atmel.com>2008-04-28 02:15:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:39 -0700
commitfd0858017eb67aa0d41dd4e8499ca6a7bfb63941 (patch)
tree782b525181b6cd2f10b4f1307e93a8716c783dd4 /include/video
parentcf19a37e0641d975d271a5a30f097dd6b96d232f (diff)
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atmel_lcdfb: wiring BGR to RGB color mode
Adds different wiring mode for the LCD screen. The legacy atmel LCDC IP uses a non standard color mode, "BGR-555.1" instead "RGB-565". The major part of graphic stacks for embedded systems uses only "RGB-565". It is possible to swap LCD IOs instead of doing this bit swapping by software (See application note AT91SAM9 LCD Controller http://www.atmel.com/dyn/resources/prod_documents/doc6300.pdf) This wire swapping is done on the at91sam9rl-ek board (board code using this patch will come later). Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Hans-Christian Egtvedt <hcegtvedt@atmel.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Andrew Victor <avictor.za@gmail.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/video')
-rw-r--r--include/video/atmel_lcdc.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/video/atmel_lcdc.h b/include/video/atmel_lcdc.h
index 2fd9fad922e..ed64862c4e1 100644
--- a/include/video/atmel_lcdc.h
+++ b/include/video/atmel_lcdc.h
@@ -22,6 +22,15 @@
#ifndef __ATMEL_LCDC_H__
#define __ATMEL_LCDC_H__
+
+/* Way LCD wires are connected to the chip:
+ * Some Atmel chips use BGR color mode (instead of standard RGB)
+ * A swapped wiring onboard can bring to RGB mode.
+ */
+#define ATMEL_LCDC_WIRING_BGR 0
+#define ATMEL_LCDC_WIRING_RGB 1
+
+
/* LCD Controller info data structure, stored in device platform_data */
struct atmel_lcdfb_info {
spinlock_t lock;
@@ -42,6 +51,7 @@ struct atmel_lcdfb_info {
u8 saved_lcdcon;
u8 default_bpp;
+ u8 lcd_wiring_mode;
unsigned int default_lcdcon2;
unsigned int default_dmacon;
void (*atmel_lcdfb_power_control)(int on);