ACPI: thinkpad-acpi: make the video output feature optional

The video output port control feature is not very useful on many ThinkPads
(especially when a X server is running), and lately userspace is getting
better and better at it, so it makes sense to allow users to stripe out the
thinkpad-acpi video feature from their kernels and save at least 2KB.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 1abc95ca9dfa..982e27b86d10 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -258,6 +258,23 @@ config THINKPAD_ACPI_BAY
 
           If you are not sure, say Y here.
 
+config THINKPAD_ACPI_VIDEO
+        bool "Video output control support"
+        depends on THINKPAD_ACPI
+        default y
+        ---help---
+          Allows the thinkpad_acpi driver to provide an interface to control
+          the various video output ports.
+
+          This feature often won't work well, depending on ThinkPad model,
+          display state, video output devices in use, whether there is a X
+          server running, phase of the moon, and the current mood of
+          Schroedinger's cat.  If you can use X.org's RandR to control
+          your ThinkPad's video output ports instead of this feature,
+          don't think twice: do it and say N here to save some memory.
+
+          If you are not sure, say Y here.
+
 config THINKPAD_ACPI_HOTKEY_POLL
         bool "Suport NVRAM polling for hot keys"
         depends on THINKPAD_ACPI