ARM: EXYNOS: add platform device for core DRM subsystem

Add platform device for Exynos DRM core. This device is used
for creating DRM user-space device and allocating memory for
display buffers.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

4 files changed, 37 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index e81c35f936b5..8bc89f27e9da 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -80,6 +80,11 @@ config EXYNOS4_DEV_AHCI
         help
           Compile in platform device definitions for AHCI
 
+config EXYNOS_DEV_DRM
+        bool
+        help
+          Compile in platform device definitions for core DRM device
+
 config EXYNOS4_SETUP_FIMD0
         bool
         help
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 8631840d1b5e..f67e882b9dab 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_MACH_EXYNOS5_DT)		+= mach-exynos5-dt.o
 obj-y                                   += dev-uart.o
 obj-$(CONFIG_ARCH_EXYNOS4)              += dev-audio.o
 obj-$(CONFIG_EXYNOS4_DEV_AHCI)          += dev-ahci.o
+obj-$(CONFIG_EXYNOS_DEV_DRM)            += dev-drm.o
 obj-$(CONFIG_EXYNOS4_DEV_SYSMMU)        += dev-sysmmu.o
 obj-$(CONFIG_EXYNOS4_DEV_DWMCI)         += dev-dwmci.o
 obj-$(CONFIG_EXYNOS4_DEV_DMA)           += dma.o
diff --git a/arch/arm/mach-exynos/dev-drm.c b/arch/arm/mach-exynos/dev-drm.c
new file mode 100644
index 000000000000..17c9c6ecc2e0
--- /dev/null
+++ b/arch/arm/mach-exynos/dev-drm.c
@@ -0,0 +1,29 @@
+/*
+ * linux/arch/arm/mach-exynos/dev-drm.c
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * EXYNOS - core DRM device
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+
+#include <plat/devs.h>
+
+static u64 exynos_drm_dma_mask = DMA_BIT_MASK(32);
+
+struct platform_device exynos_device_drm = {
+        .name   = "exynos-drm",
+        .dev    = {
+                .dma_mask               = &exynos_drm_dma_mask,
+                .coherent_dma_mask      = DMA_BIT_MASK(32),
+        }
+};
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index 2155d4af62a3..62e6251e4b19 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -135,6 +135,8 @@ extern struct platform_device exynos4_device_pd[];
 extern struct platform_device exynos4_device_spdif;
 extern struct platform_device exynos4_device_sysmmu;
 
+extern struct platform_device exynos_device_drm;
+
 extern struct platform_device samsung_asoc_dma;
 extern struct platform_device samsung_asoc_idma;
 extern struct platform_device samsung_device_keypad;