x86, olpc: Add XO-1 SCI driver and power button control

The System Control Interrupt is used in the OLPC XO-1 to control various
features of the laptop. Add the driver base and the power button
functionality.

This driver can't be built as a module, because functionality added in
future patches means that some drivers need to know at boot-time whether
SCI-based functionality is available.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Link: http://lkml.kernel.org/r/1309019658-1712-6-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f473151ac991..66b7b9d519d5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2080,6 +2080,15 @@ config OLPC_XO1_PM
         ---help---
           Add support for poweroff and suspend of the OLPC XO-1 laptop.
 
+config OLPC_XO1_SCI
+        bool "OLPC XO-1 SCI extras"
+        depends on OLPC && OLPC_XO1_PM
+        select GPIO_CS5535
+        select MFD_CORE
+        ---help---
+          Add support for SCI-based features of the OLPC XO-1 laptop:
+           - Power button
+
 endif # X86_32
 
 config AMD_NB