ARM: EXYNOS: Limit usage of pl330 device instance to non-dt build

The pl330 device instances and associated platform data is required only
for non-device-tree builds. With device tree enabled, the data about the
platform is obtained from the device tree. For images that include both
dt and non-dt platforms, an addditional check is added to ensure that
static amba device registrations is applicable to only non-dt platforms.

Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

3 files changed, 16 insertions, 1 deletions

diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 724ec0f3560d..68e4ab0c9375 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -57,6 +57,11 @@ config EXYNOS4_MCT
         help
           Use MCT (Multi Core Timer) as kernel timers
 
+config EXYNOS4_DEV_DMA
+        bool
+        help
+          Compile in amba device definitions for DMA controller
+
 config EXYNOS4_DEV_AHCI
         bool
         help
@@ -177,6 +182,7 @@ config MACH_SMDKV310
         select SAMSUNG_DEV_BACKLIGHT
         select EXYNOS4_DEV_AHCI
         select SAMSUNG_DEV_KEYPAD
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_PD
         select SAMSUNG_DEV_PWM
         select EXYNOS4_DEV_SYSMMU
@@ -197,6 +203,7 @@ config MACH_ARMLEX4210
         select S3C_DEV_HSMMC2
         select S3C_DEV_HSMMC3
         select EXYNOS4_DEV_AHCI
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_SYSMMU
         select EXYNOS4_SETUP_SDHCI
         help
@@ -222,6 +229,7 @@ config MACH_UNIVERSAL_C210
         select S5P_DEV_MFC
         select S5P_DEV_ONENAND
         select S5P_DEV_TV
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_PD
         select EXYNOS4_SETUP_FIMD0
         select EXYNOS4_SETUP_I2C1
@@ -255,6 +263,7 @@ config MACH_NURI
         select S5P_DEV_MFC
         select S5P_DEV_USB_EHCI
         select S5P_SETUP_MIPIPHY
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_PD
         select EXYNOS4_SETUP_FIMC
         select EXYNOS4_SETUP_FIMD0
@@ -287,6 +296,7 @@ config MACH_ORIGEN
         select S5P_DEV_USB_EHCI
         select SAMSUNG_DEV_BACKLIGHT
         select SAMSUNG_DEV_PWM
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_PD
         select EXYNOS4_SETUP_FIMD0
         select EXYNOS4_SETUP_SDHCI
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 59069a35e40b..cb6fb0e8bcaf 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -13,7 +13,7 @@ obj-				:=
 # Core support for EXYNOS4 system
 
 obj-$(CONFIG_ARCH_EXYNOS4)      += cpu.o init.o clock.o irq-combiner.o setup-i2c0.o
-obj-$(CONFIG_ARCH_EXYNOS4)      += irq-eint.o dma.o pmu.o
+obj-$(CONFIG_ARCH_EXYNOS4)      += irq-eint.o pmu.o
 obj-$(CONFIG_CPU_EXYNOS4210)    += clock-exynos4210.o
 obj-$(CONFIG_SOC_EXYNOS4212)    += clock-exynos4212.o
 obj-$(CONFIG_PM)                += pm.o
@@ -44,6 +44,7 @@ obj-$(CONFIG_EXYNOS4_DEV_AHCI)		+= dev-ahci.o
 obj-$(CONFIG_EXYNOS4_DEV_PD)            += dev-pd.o
 obj-$(CONFIG_EXYNOS4_DEV_SYSMMU)        += dev-sysmmu.o
 obj-$(CONFIG_EXYNOS4_DEV_DWMCI)         += dev-dwmci.o
+obj-$(CONFIG_EXYNOS4_DEV_DMA)           += dma.o
 
 obj-$(CONFIG_EXYNOS4_SETUP_FIMC)        += setup-fimc.o
 obj-$(CONFIG_EXYNOS4_SETUP_FIMD0)       += setup-fimd0.o
diff --git a/arch/arm/mach-exynos/dma.c b/arch/arm/mach-exynos/dma.c
index 141093d60d0d..b10fcd270f07 100644
--- a/arch/arm/mach-exynos/dma.c
+++ b/arch/arm/mach-exynos/dma.c
@@ -24,6 +24,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/pl330.h>
+#include <linux/of.h>
 
 #include <asm/irq.h>
 #include <plat/devs.h>
@@ -140,6 +141,9 @@ struct amba_device exynos4_device_pdma1 = {
 
 static int __init exynos4_dma_init(void)
 {
+        if (of_have_populated_dt())
+                return 0;
+
         dma_cap_set(DMA_SLAVE, exynos4_pdma0_pdata.cap_mask);
         dma_cap_set(DMA_CYCLIC, exynos4_pdma0_pdata.cap_mask);
         amba_device_register(&exynos4_device_pdma0, &iomem_resource);