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lcd: Add CONFIG_LCD_ALIGNMENT to select frame buffer alignment

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The normal alignment is PAGE_SIZE, but if this is defined, we can support
other alignments.

The motivation for this change is to make the display section-aligned on
ARM so that we can easily turn off data caching for the frame buffer region
without resorting to level 2 page tables.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Simon Glass
2012-10-17 13:24:54 +00:00
committed by Tom Warren
parent 0dde7f5379
commit 676d319ef5
3 changed files with 29 additions and 5 deletions
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3
include/lcd.h
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@@ -297,6 +297,9 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y);
/* Allow boards to customize the information displayed */
void lcd_show_board_info(void);
/* Return the size of the LCD frame buffer, and the line length */
int lcd_get_size(int *line_length);
/************************************************************************/
/* ** BITMAP DISPLAY SUPPORT */
/************************************************************************/