ARM: EXYNOS: Decouple ARCH_EXYNOS from PLAT_S5P

After removing support for ATAGS based boot on Exynos, there is not much
that can be shared between Exynos and other S5P platforms. This patch
makes Exynos a standalone Samsung platform, not using PLAT_S5P.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/Kconfig

@@ -795,7 +795,9 @@ config ARCH_EXYNOS
 	bool "Samsung EXYNOS"
 	select ARCH_HAS_CPUFREQ
 	select ARCH_HAS_HOLES_MEMORYMODEL
+	select ARCH_REQUIRE_GPIOLIB
 	select ARCH_SPARSEMEM_ENABLE
+	select ARM_GIC
 	select CLKDEV_LOOKUP
 	select COMMON_CLK
 	select CPU_V7
@@ -807,6 +809,7 @@ config ARCH_EXYNOS
 	select HAVE_S3C_RTC if RTC_CLASS
 	select NEED_MACH_GPIO_H
 	select NEED_MACH_MEMORY_H
+	select S5P_GPIO_DRVSTR
 	select SAMSUNG_ATAGS
 	select USE_OF
 	help

arch/arm/Makefile

@@ -197,6 +197,7 @@ machine-$(CONFIG_ARCH_SUNXI)		+= sunxi
 
 # Platform directory name.  This list is sorted alphanumerically
 # by CONFIG_* macro name.
+plat-$(CONFIG_ARCH_EXYNOS)	+= samsung
 plat-$(CONFIG_ARCH_OMAP)	+= omap
 plat-$(CONFIG_ARCH_S3C64XX)	+= samsung
 plat-$(CONFIG_PLAT_IOP)		+= iop

arch/arm/mach-exynos/Kconfig

@@ -14,6 +14,7 @@ menu "SAMSUNG EXYNOS SoCs Support"
 config ARCH_EXYNOS4
 	bool "SAMSUNG EXYNOS4"
 	default y
+	select GIC_NON_BANKED
 	select HAVE_ARM_SCU if SMP
 	select HAVE_SMP
 	select MIGHT_HAVE_CACHE_L2X0

arch/arm/plat-samsung/Kconfig

@@ -6,7 +6,7 @@
 
 config PLAT_SAMSUNG
 	bool
-	depends on PLAT_S3C24XX || ARCH_S3C64XX || PLAT_S5P
+	depends on PLAT_S3C24XX || ARCH_S3C64XX || PLAT_S5P || ARCH_EXYNOS
 	default y
 	select GENERIC_IRQ_CHIP
 	select NO_IOPORT
@@ -15,12 +15,10 @@ config PLAT_SAMSUNG
 
 config PLAT_S5P
 	bool
-	depends on (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210 || ARCH_EXYNOS)
+	depends on (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210)
 	default y
 	select ARCH_REQUIRE_GPIOLIB
-	select ARM_GIC if ARCH_EXYNOS
-	select ARM_VIC if !ARCH_EXYNOS
-	select GIC_NON_BANKED if ARCH_EXYNOS4
+	select ARM_VIC
 	select NO_IOPORT
 	select PLAT_SAMSUNG
 	select S3C_GPIO_TRACK

arch/arm/plat-samsung/pm-gpio.c

@@ -192,7 +192,8 @@ struct samsung_gpio_pm samsung_gpio_pm_2bit = {
 	.resume = samsung_gpio_pm_2bit_resume,
 };
 
-#if defined(CONFIG_ARCH_S3C64XX) || defined(CONFIG_PLAT_S5P)
+#if defined(CONFIG_ARCH_S3C64XX) || defined(CONFIG_PLAT_S5P) \
+	|| defined(CONFIG_ARCH_EXYNOS)
 static void samsung_gpio_pm_4bit_save(struct samsung_gpio_chip *chip)
 {
 	chip->pm_save[1] = __raw_readl(chip->base + OFFS_CON);
@@ -302,7 +303,7 @@ struct samsung_gpio_pm samsung_gpio_pm_4bit = {
 	.save	= samsung_gpio_pm_4bit_save,
 	.resume = samsung_gpio_pm_4bit_resume,
 };
-#endif /* CONFIG_ARCH_S3C64XX || CONFIG_PLAT_S5P */
+#endif /* CONFIG_ARCH_S3C64XX || CONFIG_PLAT_S5P || CONFIG_ARCH_EXYNOS */
 
 /**
  * samsung_pm_save_gpio() - save gpio chip data for suspend