[1/7,OMAP] gpio: Allow for extended GPIO space

Commit Message

Cory Maccarrone July 20, 2010, 4:05 a.m. UTC

None

Patch

diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index e2ed952..5bc7a79 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -2,6 +2,24 @@  if ARCH_OMAP
 
 menu "TI OMAP Common Features"
 
+config OMAP_GPIO_EXTRA
+	int
+	default 128 if OMAP_GPIO_EXTRA128
+	default 64 if OMAP_GPIO_EXTRA64
+	default 0
+
+config OMAP_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 OMAP_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 ARCH_OMAP_OTG
 	bool
 
diff --git a/arch/arm/plat-omap/include/plat/gpio.h b/arch/arm/plat-omap/include/plat/gpio.h
index de1c604..d21b790 100644
--- a/arch/arm/plat-omap/include/plat/gpio.h
+++ b/arch/arm/plat-omap/include/plat/gpio.h
@@ -86,6 +86,13 @@  extern void omap_gpio_restore_context(void);
  * The original OMAP-specfic calls should eventually be removed.
  */
 
+/*
+ * Some boards require extra gpio capacity to support external
+ * devices that need GPIO.
+ */
+
+#define ARCH_NR_GPIOS	(256 + CONFIG_OMAP_GPIO_EXTRA)
+
 #include <linux/errno.h>
 #include <asm-generic/gpio.h>