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video: Add an option to skip video initialization

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This patch adds an option to skip the video initialization on for all
video drivers. This is needed for the CPCI750 which can be built as
CPCI host and adapter/target board. And the adapter board can't
access the video cards located on the CompactPCI bus.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>

Rebased against simplifying patch.
Signed-off-by: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Wolfgang Denk 2009-05-15 10:07:43 +02:00
parent f62f64692f
commit 6cc7ba9ed4
1 changed files with 15 additions and 0 deletions
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15
drivers/video/cfb_console.c
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@ -1330,11 +1330,26 @@ static int video_init (void)
/*****************************************************************************/
/*
* Implement a weak default function for boards that optionally
* need to skip the video initialization.
*/
int __board_video_skip(void)
{
/* As default, don't skip test */
return 0;
}
int board_video_skip(void) __attribute__((weak, alias("__board_video_skip")));
int drv_video_init (void)
{
int skip_dev_init;
device_t console_dev;
/* Check if video initialization should be skipped */
if (board_video_skip())
return 0;
/* Init video chip - returns with framebuffer cleared */
skip_dev_init = (video_init () == -1);