[media] s5p-fimc: Add support for Exynos4x12 FIMC-LITE

This patch adds driver for FIMC-LITE camera host interface. This new IP
differs from the regular FIMC IP in that it doesn't have input DMA,
scaler and color space conversion support. So it just plain camera host
interface for MIPI-CSI2 and ITU-R interfaces. For the serial bus support
it interworks with MIPI-CSIS and the exisiting s5p-csis driver.
The FIMC-LITE and MIPI-CSIS drivers can also be reused in the Exynos5
SoC series.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/Kconfig

@@ -1130,19 +1130,6 @@ config VIDEO_MX2
 	  This is a v4l2 driver for the i.MX27 and the i.MX25 Camera Sensor
 	  Interface
 
-config  VIDEO_SAMSUNG_S5P_FIMC
-	tristate "Samsung S5P and EXYNOS4 camera interface driver (EXPERIMENTAL)"
-	depends on VIDEO_V4L2 && I2C && PLAT_S5P && PM_RUNTIME && \
-		VIDEO_V4L2_SUBDEV_API && EXPERIMENTAL
-	select VIDEOBUF2_DMA_CONTIG
-	select V4L2_MEM2MEM_DEV
-	---help---
-	  This is a v4l2 driver for Samsung S5P and EXYNOS4 camera
-	  host interface and video postprocessor.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called s5p-fimc.
-
 config VIDEO_ATMEL_ISI
 	tristate "ATMEL Image Sensor Interface (ISI) support"
 	depends on VIDEO_DEV && SOC_CAMERA && ARCH_AT91
@@ -1151,16 +1138,7 @@ config VIDEO_ATMEL_ISI
 	  This module makes the ATMEL Image Sensor Interface available
 	  as a v4l2 device.
 
-config VIDEO_S5P_MIPI_CSIS
-	tristate "Samsung S5P and EXYNOS4 MIPI CSI receiver driver"
-	depends on VIDEO_V4L2 && PM_RUNTIME && PLAT_S5P
-	depends on VIDEO_V4L2_SUBDEV_API && REGULATOR
-	---help---
-	  This is a v4l2 driver for Samsung S5P/EXYNOS4 MIPI-CSI receiver.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called s5p-csis.
-
+source "drivers/media/video/s5p-fimc/Kconfig"
 source "drivers/media/video/s5p-tv/Kconfig"
 
 endif # V4L_PLATFORM_DRIVERS

drivers/media/video/s5p-fimc/Kconfig

@@ -0,0 +1,48 @@
+
+config VIDEO_SAMSUNG_S5P_FIMC
+	bool "Samsung S5P/EXYNOS SoC camera interface driver (experimental)"
+	depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && PLAT_S5P && PM_RUNTIME
+	depends on EXPERIMENTAL
+	help
+	  Say Y here to enable camera host interface devices for
+	  Samsung S5P and EXYNOS SoC series.
+
+if VIDEO_SAMSUNG_S5P_FIMC
+
+config VIDEO_S5P_FIMC
+	tristate "S5P/EXYNOS4 FIMC/CAMIF camera interface driver"
+	depends on I2C
+	select VIDEOBUF2_DMA_CONTIG
+	select V4L2_MEM2MEM_DEV
+	help
+	  This is a V4L2 driver for Samsung S5P and EXYNOS4 SoC camera host
+	  interface and video postprocessor (FIMC and FIMC-LITE) devices.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called s5p-fimc.
+
+config VIDEO_S5P_MIPI_CSIS
+	tristate "S5P/EXYNOS MIPI-CSI2 receiver (MIPI-CSIS) driver"
+	depends on REGULATOR
+	help
+	  This is a V4L2 driver for Samsung S5P and EXYNOS4 SoC MIPI-CSI2
+	  receiver (MIPI-CSIS) devices.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called s5p-csis.
+
+if ARCH_EXYNOS
+
+config VIDEO_EXYNOS_FIMC_LITE
+	tristate "EXYNOS FIMC-LITE camera interface driver"
+	depends on I2C
+	select VIDEOBUF2_DMA_CONTIG
+	help
+	  This is a V4L2 driver for Samsung EXYNOS4/5 SoC FIMC-LITE camera
+	  host interface.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called exynos-fimc-lite.
+endif
+
+endif # VIDEO_SAMSUNG_S5P_FIMC

drivers/media/video/s5p-fimc/Makefile

@@ -1,5 +1,7 @@
 s5p-fimc-objs := fimc-core.o fimc-reg.o fimc-m2m.o fimc-capture.o fimc-mdevice.o
+exynos-fimc-lite-objs += fimc-lite-reg.o fimc-lite.o
 s5p-csis-objs := mipi-csis.o
 
 obj-$(CONFIG_VIDEO_S5P_MIPI_CSIS)	+= s5p-csis.o
-obj-$(CONFIG_VIDEO_SAMSUNG_S5P_FIMC)	+= s5p-fimc.o
+obj-$(CONFIG_VIDEO_EXYNOS_FIMC_LITE)	+= exynos-fimc-lite.o
+obj-$(CONFIG_VIDEO_S5P_FIMC)		+= s5p-fimc.o

drivers/media/video/s5p-fimc/fimc-core.h

@@ -17,6 +17,7 @@
 #include <linux/types.h>
 #include <linux/videodev2.h>
 #include <linux/io.h>
+#include <asm/sizes.h>
 
 #include <media/media-entity.h>
 #include <media/videobuf2-core.h>