video: Make CONFIG_FIRMWARE_EDID generally available

DRM drivers such as efidrm and vesadrm can export firmware EDID
data to userspace. Make the related option CONFIG_FIRMWARE_EDID
available without CONFIG_FB. Make it depend on X86, which is
currently the only architecture providing EDID information.

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Helge Deller <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Thomas Zimmermann

drivers/video/Kconfig

@@ -61,6 +61,23 @@ config HDMI
 
 endif # HAS_IOMEM
 
+config FIRMWARE_EDID
+	bool "Enable firmware EDID"
+	depends on X86
+	help
+	  This enables access to the EDID transferred from the firmware.
+	  On x86, this is from the VESA BIOS. DRM display drivers will
+	  be able to export the information to userspace.
+
+	  Also 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.
+
 if VT
 	source "drivers/video/console/Kconfig"
 endif
@@ -70,5 +87,4 @@ if FB_CORE || SGI_NEWPORT_CONSOLE
 
 endif
 
-
 endmenu

drivers/video/fbdev/core/Kconfig

@@ -10,21 +10,6 @@ config FB_CORE
 config FB_NOTIFY
 	bool
 
-config FIRMWARE_EDID
-	bool "Enable firmware EDID"
-	depends on FB
-	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_DEVICE
 	bool "Provide legacy /dev/fb* device"
 	depends on FB_CORE

drivers/video/fbdev/core/fbmon.c

@@ -1484,13 +1484,12 @@ int fb_validate_mode(const struct fb_var_screeninfo *var, struct fb_info *info)
 		-EINVAL : 0;
 }
 
-#if defined(CONFIG_FIRMWARE_EDID) && defined(CONFIG_X86)
-
 /*
  * We need to ensure that the EDID block is only returned for
  * the primary graphics adapter.
  */
 
+#if defined(CONFIG_FIRMWARE_EDID)
 const unsigned char *fb_firmware_edid(struct device *device)
 {
 	struct pci_dev *dev = NULL;