[U-Boot] [PATCH RESEND] video:cache:fix: Buffer alignment and dcache flush for lcd subsystem

[Lukasz Majewski]

This commit makes the video subsystem code cache aware.
Memory allocated for decompressed BMP memory is now cache line aligned.

Flushing of the dcache is also performed after copying BMP data to fb
address (it is done for 32 BPP bitmap used on Trats board (Exynos4210)).


Tested-by: Lukasz Majewski <l.majewski at samsung.com>
Signed-off-by: Lukasz Majewski <l.majewski at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
Cc: Anatolij Gustschin <agust at denx.de>
---
 common/cmd_bmp.c |    2 +-
 common/lcd.c     |    3 +++
 2 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c
index 5a52edd..57f3eb5 100644
--- a/common/cmd_bmp.c
+++ b/common/cmd_bmp.c
@@ -55,7 +55,7 @@ bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
 	 * Decompress bmp image
 	 */
 	len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
-	dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE);
+	dst = memalign(CONFIG_SYS_CACHELINE_SIZE, len);
 	if (dst == NULL) {
 		puts("Error: malloc in gunzip failed!\n");
 		return NULL;
diff --git a/common/lcd.c b/common/lcd.c
index 4778655..784d1fb 100644
--- a/common/lcd.c
+++ b/common/lcd.c
@@ -1023,6 +1023,9 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
 			}
 			fb  -= (lcd_line_length + width * (bpix / 8));
 		}
+		flush_dcache_range((unsigned long) fb,
+				   (unsigned long) fb +
+				   (lcd_line_length * height));
 		break;
 #endif /* CONFIG_BMP_32BPP */
 	default:
-- 
1.7.2.3