[media] Exynos4 JPEG codec v4l2 driver

Add driver for the JPEG codec IP block available in Samsung Exynos SoC series.

The driver is implemented as a V4L2 mem-to-mem device. It exposes two video
nodes to user space, one for the encoding part, and one for the decoding part.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Sakari Ailus <sakari.ailus@iki.fi>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/Kconfig

@@ -1160,6 +1160,14 @@ config VIDEO_SAMSUNG_S5P_G2D
 	  This is a v4l2 driver for Samsung S5P and EXYNOS4 G2D
 	  2d graphics accelerator.
 
+config VIDEO_SAMSUNG_S5P_JPEG
+	tristate "Samsung S5P/Exynos4 JPEG codec driver (EXPERIMENTAL)"
+	depends on VIDEO_DEV && VIDEO_V4L2 && PLAT_S5P && EXPERIMENTAL
+	select VIDEOBUF2_DMA_CONTIG
+	select V4L2_MEM2MEM_DEV
+	---help---
+	  This is a v4l2 driver for Samsung S5P and EXYNOS4 JPEG codec
+
 config VIDEO_SAMSUNG_S5P_MFC
 	tristate "Samsung S5P MFC 5.1 Video Codec"
 	depends on VIDEO_DEV && VIDEO_V4L2 && PLAT_S5P

drivers/media/video/Makefile

@@ -178,6 +178,7 @@ obj-$(CONFIG_VIDEO_OMAP1)		+= omap1_camera.o
 obj-$(CONFIG_VIDEO_ATMEL_ISI)		+= atmel-isi.o
 
 obj-$(CONFIG_VIDEO_SAMSUNG_S5P_FIMC) 	+= s5p-fimc/
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_JPEG)	+= s5p-jpeg/
 obj-$(CONFIG_VIDEO_SAMSUNG_S5P_MFC)	+= s5p-mfc/
 obj-$(CONFIG_VIDEO_SAMSUNG_S5P_TV)	+= s5p-tv/
 

drivers/media/video/s5p-jpeg/Makefile

@@ -0,0 +1,2 @@
+s5p-jpeg-objs := jpeg-core.o
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_JPEG) := s5p-jpeg.o