---

yaml --- r: 24371 b: refs/heads/master c: 59153f7 h: refs/heads/master i: 24369: 29ac50d 24367: 598b51c v: v3
git-mirror · Mar 27, 2006 · 87b83c0 · 87b83c0
1 parent f8189a0
commit 87b83c0
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Showing 4 changed files with 22 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f95ec3c6df271ae4e6290cd6b95c18a009c76dc9
+refs/heads/master: 59153f7d7effdb5b3c81eb6d03914a866157b319
diff --git a/trunk/arch/i386/boot/video.S b/trunk/arch/i386/boot/video.S
@@ -1924,6 +1924,7 @@ skip10:	movb	%ah, %al
 	ret
 
 store_edid:
+#ifdef CONFIG_FB_FIRMWARE_EDID
 	pushw	%es				# just save all registers
 	pushw	%ax
 	pushw	%bx
@@ -1954,6 +1955,7 @@ store_edid:
 	popw	%bx
 	popw	%ax
 	popw	%es
+#endif
 	ret
 
 # VIDEO_SELECT-only variables

diff --git a/trunk/drivers/video/Kconfig b/trunk/drivers/video/Kconfig
@@ -70,6 +70,22 @@ config FB_MACMODES
        depends on FB
        default n
 
+config FB_FIRMWARE_EDID
+       bool "Enable firmware EDID"
+       depends on FB
+       default y
+       ---help---
+         This enables access to the EDID transferred from the firmware.
+	 On the i386, this is from the Video BIOS. Enable this if DDC/I2C
+	 transfers do not work for your driver and if you are using
+	 nvidiafb, i810fb or savagefb.
+
+	 In general, choosing Y for this option is safe.  If you
+	 experience extremely long delays while booting before you get
+	 something on your display, try setting this to N.  Matrox cards in
+	 combination with certain motherboards and monitors are known to
+	 suffer from this problem.
+
 config FB_MODE_HELPERS
         bool "Enable Video Mode Handling Helpers"
         depends on FB

diff --git a/trunk/drivers/video/fbmon.c b/trunk/drivers/video/fbmon.c
@@ -1281,7 +1281,7 @@ int fb_validate_mode(const struct fb_var_screeninfo *var, struct fb_info *info)
 		-EINVAL : 0;
 }
 
-#if defined(__i386__)
+#if defined(CONFIG_FB_FIRMWARE_EDID) && defined(__i386__)
 #include <linux/pci.h>
 
 /*
@@ -1311,11 +1311,11 @@ const unsigned char *fb_firmware_edid(struct device *device)
 {
 	return NULL;
 }
-#endif /* _i386_ */
+#endif
+EXPORT_SYMBOL(fb_firmware_edid);
 
 EXPORT_SYMBOL(fb_parse_edid);
 EXPORT_SYMBOL(fb_edid_to_monspecs);
-EXPORT_SYMBOL(fb_firmware_edid);
 EXPORT_SYMBOL(fb_get_mode);
 EXPORT_SYMBOL(fb_validate_mode);
 EXPORT_SYMBOL(fb_destroy_modedb);