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authorBen Dooks <ben-linux@fluff.org>2008-11-10 10:59:32 +0000
committerBen Dooks <ben-linux@fluff.org>2008-12-18 14:43:07 +0000
commite2178d437460dafaaae89926088523432eb4de53 (patch)
treefe14348512ccfa934eead187f315c2bde8d72f48
parent8783b3446ba33a1cdd43f7eaa4ad6a1b73502a1a (diff)
[ARM] S3C24XX: Add extra GPIOs via Kconfig
Add Kconfig entries to allow more GPIO space to be specified depending on the machine(s) selected. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
-rw-r--r--arch/arm/mach-s3c2410/include/mach/gpio.h6
-rw-r--r--arch/arm/mach-s3c2440/Kconfig2
-rw-r--r--arch/arm/plat-s3c24xx/Kconfig21
3 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/include/mach/gpio.h b/arch/arm/mach-s3c2410/include/mach/gpio.h
index 3b52b86498a..e0349af8a48 100644
--- a/arch/arm/mach-s3c2410/include/mach/gpio.h
+++ b/arch/arm/mach-s3c2410/include/mach/gpio.h
@@ -15,4 +15,10 @@
#define gpio_set_value __gpio_set_value
#define gpio_cansleep __gpio_cansleep
+/* some boards require extra gpio capacity to support external
+ * devices that need GPIO.
+ */
+
+#define ARCH_NR_GPIOS (256 + CONFIG_S3C24XX_GPIO_EXTRA)
+
#include <asm-generic/gpio.h>
diff --git a/arch/arm/mach-s3c2440/Kconfig b/arch/arm/mach-s3c2440/Kconfig
index 0429d255b0d..402213dc5d8 100644
--- a/arch/arm/mach-s3c2440/Kconfig
+++ b/arch/arm/mach-s3c2440/Kconfig
@@ -31,6 +31,7 @@ config MACH_ANUBIS
select CPU_S3C2440
select PM_SIMTEC if PM
select HAVE_PATA_PLATFORM
+ select S3C24XX_GPIO_EXTRA64
help
Say Y here if you are using the Simtec Electronics ANUBIS
development system
@@ -39,6 +40,7 @@ config MACH_OSIRIS
bool "Simtec IM2440D20 (OSIRIS) module"
select CPU_S3C2440
select PM_SIMTEC if PM
+ select S3C24XX_GPIO_EXTRA128
help
Say Y here if you are using the Simtec IM2440D20 module, also
known as the Osiris.
diff --git a/arch/arm/plat-s3c24xx/Kconfig b/arch/arm/plat-s3c24xx/Kconfig
index 0af3872fb76..7fe28aaa08c 100644
--- a/arch/arm/plat-s3c24xx/Kconfig
+++ b/arch/arm/plat-s3c24xx/Kconfig
@@ -28,6 +28,27 @@ config S3C24XX_PWM
Support for exporting the PWM timer blocks via the pwm device
system.
+
+# gpio configurations
+
+config S3C24XX_GPIO_EXTRA
+ int
+ default 128 if S3C24XX_GPIO_EXTRA128
+ default 64 if S3C24XX_GPIO_EXTRA64
+ default 0
+
+config S3C24XX_GPIO_EXTRA64
+ bool
+ help
+ Add an extra 64 gpio numbers to the available GPIO pool. This is
+ available for boards that need extra gpios for external devices.
+
+config S3C24XX_GPIO_EXTRA128
+ bool
+ help
+ Add an extra 128 gpio numbers to the available GPIO pool. This is
+ available for boards that need extra gpios for external devices.
+
config PM_SIMTEC
bool
help