ARM: SAMSUNG: Add config option for number of additional GPIO pins.

This patch adds a configuration option for specifing the number
of additional GPIO pins to be used in addition to the GPIO pins
supported onchip.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index 900b463fc197..faec4b8c626c 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -66,6 +66,14 @@ config S3C_GPIO_PULL_UP
         help
           Internal configuration to enable the correct GPIO pull helper
 
+config SAMSUNG_GPIO_EXTRA
+        int "Number of additional GPIO pins"
+        default 0
+        help
+          Use additional GPIO space in addition to the GPIO's the SOC
+          provides. This allows expanding the GPIO space for use with
+          GPIO expanders.
+
 # device definitions to compile in
 
 config S3C_DEV_HSMMC