[Patch 5/9]: vt: Amend three Kconfig files
From: Alan Mackenzie
Date: Thu Aug 27 2026 - 14:51:05 EST
vt: 32b glyph: 5. Amend three Kconfig files
Until it becomes clear how to integrate CONFIG_A11Y_BRAILLE_CONSOLE and
CONFIG_SPEAKUP, they will remain disabled when CONFIG_FB_GLYPH_21BIT is
#defined.
Signed-off-by: Alan Mackenzie <acm@xxxxxx>
diff --git a/drivers/accessibility/Kconfig b/drivers/accessibility/Kconfig
index 6b2f79d1f1b8..8f27e1c657b6 100644
--- a/drivers/accessibility/Kconfig
+++ b/drivers/accessibility/Kconfig
@@ -21,6 +21,7 @@ config A11Y_BRAILLE_CONSOLE
bool "Console on braille device"
depends on VT
depends on SERIAL_CORE_CONSOLE
+ depends on !FB_GLYPH_21BIT
help
Enables console output on a braille device connected to a 8250
serial port. For now only the VisioBraille device is supported.
diff --git a/drivers/accessibility/speakup/Kconfig b/drivers/accessibility/speakup/Kconfig
index e84fb617acc4..458bee03d3e8 100644
--- a/drivers/accessibility/speakup/Kconfig
+++ b/drivers/accessibility/speakup/Kconfig
@@ -3,6 +3,7 @@ menu "Speakup console speech"
config SPEAKUP
depends on VT
+ depends on !FB_GLYPH_21BIT
tristate "Speakup core"
help
This is the Speakup screen reader. Think of it as a
diff --git a/drivers/gpu/drm/clients/Kconfig b/drivers/gpu/drm/clients/Kconfig
index 6096c623d9d5..0ce8c1506eaa 100644
--- a/drivers/gpu/drm/clients/Kconfig
+++ b/drivers/gpu/drm/clients/Kconfig
@@ -42,6 +42,15 @@ config DRM_FBDEV_EMULATION
If in doubt, say "Y".
+config FB_GLYPH_21BIT
+ bool "Enable 21-bit glyphs in the frame buffer device"
+ depends on (DRM_FBDEV_EMULATION = y)
+ help
+ This option enables 21-bit glyphs in the fbdev framebuffer,
+ surmounting the traditional restriction to 256/512 glyphs dating back
+ to the VGA hardware of the 1980s and 1990s. To use this effectively
+ you will need a suitable font and possibly a suitable keyboard layout.
+
config DRM_FBDEV_OVERALLOC
int "Overallocation of the fbdev buffer"
depends on DRM_FBDEV_EMULATION