misc: add dell-laptop driver

Add a driver for controlling Dell-specific backlight and rfkill interfaces.
This driver makes use of the dcdbas interface to the Dell firmware to
allow the backlight and rfkill interfaces on Dell systems to be driven
through the standardised sysfs interfaces.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Matt Domsch <Matt_Domsch@dell.com>
Cc: Ivo van Doorn <ivdoorn@gmail.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index fee7304102af..3949a1c73451 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -498,6 +498,18 @@ config SGI_GRU_DEBUG
         This option enables addition debugging code for the SGI GRU driver. If
         you are unsure, say N.
 
+config DELL_LAPTOP
+        tristate "Dell Laptop Extras (EXPERIMENTAL)"
+        depends on X86
+        depends on DCDBAS
+        depends on EXPERIMENTAL
+        depends on BACKLIGHT_CLASS_DEVICE
+        depends on RFKILL
+        default n
+        ---help---
+        This driver adds support for rfkill and backlight control to Dell
+        laptops.
+
 source "drivers/misc/c2port/Kconfig"
 
 endif # MISC_DEVICES