From 5fc564eda7cc99a37fa485b452fdcc1260ee2d4f Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Fri, 7 Aug 2009 02:47:54 +0000 Subject: Blackfin: shutdown video DMA when booting Linux In case there is no frame buffer driver present in Linux to hand over the PPI LCD DMA upon boot, the DMA initiated by u-boot to display the splash screen runs unattended. Therefore always stop the video driver in u-boot before starting Linux. If people don't want this behavior, then they can simply stub out the video_stop() function in their board video driver. Signed-off-by: Michael Hennerich Signed-off-by: Mike Frysinger --- board/bf548-ezkit/video.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'board/bf548-ezkit/video.c') diff --git a/board/bf548-ezkit/video.c b/board/bf548-ezkit/video.c index af3d58bdd..cde877aa0 100644 --- a/board/bf548-ezkit/video.c +++ b/board/bf548-ezkit/video.c @@ -224,6 +224,12 @@ int video_init(void *dst) return 0; } +void video_stop(void) +{ + DisablePPI(); + DisableDMA(); +} + static void dma_bitblit(void *dst, fastimage_t *logo, int x, int y) { if (dcache_status()) -- cgit v1.2.3