10 files changed, 31 insertions, 12 deletions

diff --git a/arch/arm/mach-s3c64xx/common.c b/arch/arm/mach-s3c64xx/common.c
index ddb30b8434c5..3dea4a4ef165 100644
--- a/arch/arm/mach-s3c64xx/common.c
+++ b/arch/arm/mach-s3c64xx/common.c
@@ -208,7 +208,7 @@ void __init s3c64xx_init_io(struct map_desc *mach_desc, int size)
 static __init int s3c64xx_dev_init(void)
 {
         /* Not applicable when using DT. */
-        if (of_have_populated_dt())
+        if (of_have_populated_dt() || !soc_is_s3c64xx())
                 return 0;
 
         subsys_system_register(&s3c64xx_subsys, NULL);
@@ -413,7 +413,7 @@ static int __init s3c64xx_init_irq_eint(void)
         int irq;
 
         /* On DT-enabled systems EINTs are handled by pinctrl-s3c64xx driver. */
-        if (of_have_populated_dt())
+        if (of_have_populated_dt() || !soc_is_s3c64xx())
                 return -ENODEV;
 
         for (irq = IRQ_EINT(0); irq <= IRQ_EINT(27); irq++) {
diff --git a/arch/arm/mach-s3c64xx/cpuidle.c b/arch/arm/mach-s3c64xx/cpuidle.c
index 93aa8cb70195..5322db51150e 100644
--- a/arch/arm/mach-s3c64xx/cpuidle.c
+++ b/arch/arm/mach-s3c64xx/cpuidle.c
@@ -18,6 +18,7 @@
 
 #include <asm/cpuidle.h>
 
+#include <plat/cpu.h>
 #include <mach/map.h>
 
 #include "regs-sys.h"
@@ -57,6 +58,8 @@ static struct cpuidle_driver s3c64xx_cpuidle_driver = {
 
 static int __init s3c64xx_init_cpuidle(void)
 {
-        return cpuidle_register(&s3c64xx_cpuidle_driver, NULL);
+        if (soc_is_s3c64xx())
+                return cpuidle_register(&s3c64xx_cpuidle_driver, NULL);
+        return 0;
 }
 device_initcall(s3c64xx_init_cpuidle);
diff --git a/arch/arm/mach-s3c64xx/irq-pm.c b/arch/arm/mach-s3c64xx/irq-pm.c
index ae4ea7601f60..0bbf1faaee42 100644
--- a/arch/arm/mach-s3c64xx/irq-pm.c
+++ b/arch/arm/mach-s3c64xx/irq-pm.c
@@ -113,7 +113,7 @@ static struct syscore_ops s3c64xx_irq_syscore_ops = {
 static __init int s3c64xx_syscore_init(void)
 {
         /* Appropriate drivers (pinctrl, uart) handle this when using DT. */
-        if (of_have_populated_dt())
+        if (of_have_populated_dt() || !soc_is_s3c64xx())
                 return 0;
 
         register_syscore_ops(&s3c64xx_irq_syscore_ops);
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410-module.c b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
index 9c00d83f7151..be21f06e6b3f 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410-module.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
@@ -29,6 +29,7 @@
 
 #include <linux/platform_data/spi-s3c64xx.h>
 
+#include <plat/cpu.h>
 #include "crag6410.h"
 
 static struct s3c64xx_spi_csinfo wm0010_spi_csinfo = {
@@ -399,6 +400,9 @@ static struct i2c_driver wlf_gf_module_driver = {
 
 static int __init wlf_gf_module_register(void)
 {
+        if (!soc_is_s3c64xx())
+                return 0;
+
         return i2c_add_driver(&wlf_gf_module_driver);
 }
 device_initcall(wlf_gf_module_register);
diff --git a/arch/arm/mach-s3c64xx/pl080.c b/arch/arm/mach-s3c64xx/pl080.c
index 901a984bddc2..89c5a62830a7 100644
--- a/arch/arm/mach-s3c64xx/pl080.c
+++ b/arch/arm/mach-s3c64xx/pl080.c
@@ -14,6 +14,7 @@
 #include <linux/amba/pl08x.h>
 #include <linux/of.h>
 
+#include <plat/cpu.h>
 #include <mach/irqs.h>
 #include <mach/map.h>
 
@@ -230,6 +231,9 @@ static AMBA_AHB_DEVICE(s3c64xx_dma1, "dma-pl080s.1", 0,
 
 static int __init s3c64xx_pl080_init(void)
 {
+        if (!soc_is_s3c64xx())
+                return 0;
+
         /* Set all DMA configuration to be DMA, not SDMA */
         writel(0xffffff, S3C64XX_SDMA_SEL);
 
diff --git a/arch/arm/mach-s3c64xx/pm.c b/arch/arm/mach-s3c64xx/pm.c
index 75b14e756383..59d91b83b03d 100644
--- a/arch/arm/mach-s3c64xx/pm.c
+++ b/arch/arm/mach-s3c64xx/pm.c
@@ -22,6 +22,7 @@
 #include <mach/map.h>
 #include <mach/irqs.h>
 
+#include <plat/cpu.h>
 #include <plat/devs.h>
 #include <plat/pm.h>
 #include <plat/wakeup-mask.h>
@@ -332,6 +333,9 @@ int __init s3c64xx_pm_init(void)
 
 static __init int s3c64xx_pm_initcall(void)
 {
+        if (!soc_is_s3c64xx())
+                return 0;
+
         pm_cpu_prep = s3c64xx_pm_prepare;
         pm_cpu_sleep = s3c64xx_cpu_suspend;
 
diff --git a/arch/arm/mach-s3c64xx/s3c6400.c b/arch/arm/mach-s3c64xx/s3c6400.c
index 33273abef669..5ea82accc773 100644
--- a/arch/arm/mach-s3c64xx/s3c6400.c
+++ b/arch/arm/mach-s3c64xx/s3c6400.c
@@ -81,7 +81,7 @@ static struct device s3c6400_dev = {
 static int __init s3c6400_core_init(void)
 {
         /* Not applicable when using DT. */
-        if (of_have_populated_dt())
+        if (of_have_populated_dt() || soc_is_s3c64xx())
                 return 0;
 
         return subsys_system_register(&s3c6400_subsys, NULL);
diff --git a/arch/arm/mach-s3c64xx/s3c6410.c b/arch/arm/mach-s3c64xx/s3c6410.c
index eadc48dee0e4..92bb927c4478 100644
--- a/arch/arm/mach-s3c64xx/s3c6410.c
+++ b/arch/arm/mach-s3c64xx/s3c6410.c
@@ -84,7 +84,7 @@ static struct device s3c6410_dev = {
 static int __init s3c6410_core_init(void)
 {
         /* Not applicable when using DT. */
-        if (of_have_populated_dt())
+        if (of_have_populated_dt() || !soc_is_s3c64xx())
                 return 0;
 
         return subsys_system_register(&s3c6410_subsys, NULL);
diff --git a/arch/arm/plat-samsung/gpio-samsung.c b/arch/arm/plat-samsung/gpio-samsung.c
index 7c288ba4dc87..37faa8eab78f 100644
--- a/arch/arm/plat-samsung/gpio-samsung.c
+++ b/arch/arm/plat-samsung/gpio-samsung.c
@@ -1176,14 +1176,16 @@ static __init int samsung_gpiolib_init(void)
          * interfaces. For legacy (non-DT) platforms this driver is used.
          */
         if (of_have_populated_dt())
-                return -ENODEV;
-
-        samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs));
+                return 0;
 
         if (soc_is_s3c24xx()) {
+                samsung_gpiolib_set_cfg(samsung_gpio_cfgs,
+                                ARRAY_SIZE(samsung_gpio_cfgs));
                 s3c24xx_gpiolib_add_chips(s3c24xx_gpios,
                                 ARRAY_SIZE(s3c24xx_gpios), S3C24XX_VA_GPIO);
         } else if (soc_is_s3c64xx()) {
+                samsung_gpiolib_set_cfg(samsung_gpio_cfgs,
+                                ARRAY_SIZE(samsung_gpio_cfgs));
                 samsung_gpiolib_add_2bit_chips(s3c64xx_gpios_2bit,
                                 ARRAY_SIZE(s3c64xx_gpios_2bit),
                                 S3C64XX_VA_GPIO + 0xE0, 0x20);
@@ -1192,9 +1194,6 @@ static __init int samsung_gpiolib_init(void)
                                 S3C64XX_VA_GPIO);
                 samsung_gpiolib_add_4bit2_chips(s3c64xx_gpios_4bit2,
                                 ARRAY_SIZE(s3c64xx_gpios_4bit2));
-        } else {
-                WARN(1, "Unknown SoC in gpio-samsung, no GPIOs added\n");
-                return -ENODEV;
         }
 
         return 0;
diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c
index 11fbbc26e49f..3776f7e752f0 100644
--- a/arch/arm/plat-samsung/init.c
+++ b/arch/arm/plat-samsung/init.c
@@ -152,6 +152,11 @@ static int __init s3c_arch_init(void)
 {
         int ret;
 
+        /* init is only needed for ATAGS based platforms */
+        if (!IS_ENABLED(CONFIG_ATAGS) ||
+            (!soc_is_s3c24xx() && !soc_is_s3c64xx()))
+                return 0;
+
         // do the correct init for cpu
 
         if (cpu == NULL) {