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authorAntonino A. Daplas <adaplas@gmail.com>2005-09-09 13:04:34 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-09 13:57:59 -0700
commit5e518d7672dea4cd7c60871e40d0490c52f01d13 (patch)
treea97dc33b2ce9a0553fb6b9b3206ee7674ae4d06a /arch
parent53eed4ec8bcd8701b9135859ec46b10a0d88ba25 (diff)
downloadlinux-linaro-5e518d7672dea4cd7c60871e40d0490c52f01d13.tar.gz
[PATCH] fbdev: Resurrect hooks to get EDID from firmware
For the i386, code is already present in video.S that gets the EDID from the video BIOS. Make this visible so drivers can also use this data as fallback when i2c does not work. To ensure that the EDID block is returned for the primary graphics adapter only, by check if the IORESOURCE_ROM_SHADOW flag is set. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/boot/video.S2
-rw-r--r--arch/i386/kernel/setup.c1
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/i386/boot/video.S b/arch/i386/boot/video.S
index 02bf625a681..92f66947014 100644
--- a/arch/i386/boot/video.S
+++ b/arch/i386/boot/video.S
@@ -1949,7 +1949,7 @@ store_edid:
movw $0x4f15, %ax # do VBE/DDC
movw $0x01, %bx
movw $0x00, %cx
- movw $0x01, %dx
+ movw $0x00, %dx
movw $0x140, %di
int $0x10
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index a659d274914..fa0c69eb937 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -139,6 +139,7 @@ struct sys_desc_table_struct {
unsigned char table[0];
};
struct edid_info edid_info;
+EXPORT_SYMBOL_GPL(edid_info);
struct ist_info ist_info;
#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)