diff options
| author | Nicolas Ferre <nicolas.ferre@atmel.com> | 2008-04-28 11:15:21 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 17:58:39 +0200 |
| commit | fd0858017eb67aa0d41dd4e8499ca6a7bfb63941 (patch) | |
| tree | 782b525181b6cd2f10b4f1307e93a8716c783dd4 /include/video/atmel_lcdc.h | |
| parent | atmel_lcdfb: suspend/resume support (diff) | |
| download | linux-fd0858017eb67aa0d41dd4e8499ca6a7bfb63941.tar.xz linux-fd0858017eb67aa0d41dd4e8499ca6a7bfb63941.zip | |
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/atmel_lcdc.h')
| -rw-r--r-- | include/video/atmel_lcdc.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/video/atmel_lcdc.h b/include/video/atmel_lcdc.h index 2fd9fad922e5..ed64862c4e18 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); |