[ARM] pxa/gumstix: fix incorrect init done by am200

Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Cc: Andre Puschmann <andre.puschmann@imms.de>
Signed-off-by: Eric Miao <eric.miao@marvell.com>

arch/arm/mach-pxa/Kconfig

@@ -27,15 +27,20 @@ endmenu
 endif
 
 config ARCH_GUMSTIX
-	bool "Gumstix XScale boards"
+	bool "Gumstix XScale 255 boards"
+	select PXA25x
 	help
-	  Say Y here if you intend to run this kernel on a
-	  Gumstix Full Function Minature Computer.
+	  Say Y here if you intend to run this kernel on
+	  Basix, Connex, ws-200ax, ws-400ax systems
 
-config MACH_GUMSTIX_F
-	bool "Basix, Connex, ws-200ax, ws-400ax systems"
+choice
+	prompt "Gumstix Carrier/Expansion Board"
 	depends on ARCH_GUMSTIX
-	select PXA25x
+
+config GUMSTIX_AM200EPD
+	bool "Enable AM200EPD board support"
+
+endchoice
 
 config ARCH_LUBBOCK
 	bool "Intel DBPXA250 Development Platform"
@@ -348,10 +353,6 @@ config PCM990_DISPLAY_NONE
 
 endchoice
 
-config MACH_AM200EPD
-	depends on MACH_GUMSTIX_F
-	bool "Enable AM200EPD board support"
-
 config PXA_EZX
 	bool "Motorola EZX Platform"
 	select PXA27x

arch/arm/mach-pxa/Makefile

@@ -27,7 +27,7 @@ obj-$(CONFIG_CPU_PXA930)	+= pxa930.o
 
 # Specific board support
 obj-$(CONFIG_ARCH_GUMSTIX)	+= gumstix.o
-obj-$(CONFIG_MACH_AM200EPD)	+= am200epd.o
+obj-$(CONFIG_GUMSTIX_AM200EPD)	+= am200epd.o
 obj-$(CONFIG_ARCH_LUBBOCK)	+= lubbock.o
 obj-$(CONFIG_MACH_LOGICPD_PXA270) += lpd270.o
 obj-$(CONFIG_MACH_MAINSTONE)	+= mainstone.o

arch/arm/mach-pxa/am200epd.c

@@ -331,7 +331,7 @@ static struct metronome_board am200_board = {
 	.cleanup		= am200_cleanup,
 };
 
-static int __init am200_init(void)
+int __init am200_init(void)
 {
 	int ret;
 
@@ -367,8 +367,6 @@ static int __init am200_init(void)
 module_param(panel_type, uint, 0);
 MODULE_PARM_DESC(panel_type, "Select the panel type: 6, 8, 97");
 
-module_init(am200_init);
-
 MODULE_DESCRIPTION("board driver for am200 metronome epd kit");
 MODULE_AUTHOR("Jaya Kumar");
 MODULE_LICENSE("GPL");

arch/arm/mach-pxa/gumstix.c

@@ -193,6 +193,20 @@ static unsigned long gumstix_pin_config[] __initdata = {
 	GPIO16_GPIO,
 };
 
+int __attribute__((weak)) am200_init(void)
+{
+	return 0;
+}
+
+static void __init carrier_board_init(void)
+{
+	/*
+	 * put carrier/expansion board init here if
+	 * they cannot be detected programatically
+	 */
+	am200_init();
+}
+
 static void __init gumstix_init(void)
 {
 	pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config));
@@ -201,6 +215,7 @@ static void __init gumstix_init(void)
 	gumstix_udc_init();
 	gumstix_mmc_init();
 	(void) platform_add_devices(devices, ARRAY_SIZE(devices));
+	carrier_board_init();
 }
 
 MACHINE_START(GUMSTIX, "Gumstix")

arch/arm/mach-pxa/include/mach/gumstix.h

@@ -94,3 +94,7 @@ has detected a cable insertion; driven low otherwise. */
 #define GPIO26_PRDY_nBSY_MD		(GPIO26_PRDY_nBSY | GPIO_IN)
 #define GPIO27_PRDY_nBSY_MD		(GPIO27_PRDY_nBSY | GPIO_IN)
 #define GPIO36_nCD_MD			(GPIO36_nCD | GPIO_IN)
+
+/* for expansion boards that can't be programatically detected */
+extern int am200_init(void);
+