[U-Boot] [PATCH] video: ct6900: Add an option to skip video initialization
Stefan Roese
sr at denx.de
Thu May 14 07:25:32 CEST 2009
This patch adds an option to skip the video initialization on the
ct6900. 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.
Signed-off-by: Stefan Roese <sr at denx.de>
Cc: Anatolij Gustschin <agust at denx.de>
---
drivers/video/ct69000.c | 16 +++++++++++++++-
1 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/drivers/video/ct69000.c b/drivers/video/ct69000.c
index ae219cc..6a5243b 100644
--- a/drivers/video/ct69000.c
+++ b/drivers/video/ct69000.c
@@ -964,6 +964,16 @@ static struct pci_device_id supported[] = {
{}
};
+/*
+ * Implement a weak default function for boards that optionally
+ * need to skip the video initialization.
+ */
+int __board_video_skip(void)
+{
+ return 0;
+}
+int board_video_skip(void) __attribute__((weak, alias("__board_video_skip")));
+
/*******************************************************************************
*
* Init video chip
@@ -982,8 +992,12 @@ video_hw_init (void)
struct ctfb_res_modes *res_mode;
struct ctfb_res_modes var_mode;
struct ctfb_chips_properties *chips_param;
- /* Search for video chip */
+ /* Check if video initialization should be skipped */
+ if (board_video_skip())
+ return NULL;
+
+ /* Search for video chip */
if ((devbusfn = pci_find_devices (supported, 0)) < 0) {
#ifdef CONFIG_VIDEO_ONBOARD
printf ("Video: Controller not found !\n");
--
1.6.2.5
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