--- /dev/null
+.. SPDX-License-Identifier: GPL-2.0
+
+.. include:: <isonum.txt>
+
+The Samsung S5P/EXYNOS4 FIMC driver
+===================================
+
+Copyright |copy| 2012 - 2013 Samsung Electronics Co., Ltd.
+
+Files partitioning
+------------------
+
+- media device driver
+
+ drivers/media/platform/exynos4-is/media-dev.[ch]
+
+- camera capture video device driver
+
+ drivers/media/platform/exynos4-is/fimc-capture.c
+
+- MIPI-CSI2 receiver subdev
+
+ drivers/media/platform/exynos4-is/mipi-csis.[ch]
+
+- video post-processor (mem-to-mem)
+
+ drivers/media/platform/exynos4-is/fimc-core.c
+
+- common files
+
+ drivers/media/platform/exynos4-is/fimc-core.h
+ drivers/media/platform/exynos4-is/fimc-reg.h
+ drivers/media/platform/exynos4-is/regs-fimc.h
- LCD writeback input
- per frame clock gating (mem-to-mem)
-Files partitioning
-------------------
-
-- media device driver
- drivers/media/platform/exynos4-is/media-dev.[ch]
-
-- camera capture video device driver
- drivers/media/platform/exynos4-is/fimc-capture.c
-
-- MIPI-CSI2 receiver subdev
- drivers/media/platform/exynos4-is/mipi-csis.[ch]
-
-- video post-processor (mem-to-mem)
- drivers/media/platform/exynos4-is/fimc-core.c
-
-- common files
- drivers/media/platform/exynos4-is/fimc-core.h
- drivers/media/platform/exynos4-is/fimc-reg.h
- drivers/media/platform/exynos4-is/regs-fimc.h
-
User space interfaces
---------------------
The media device interface allows to configure the SoC for capturing image
data from the sensor through more than one FIMC instance (e.g. for simultaneous
viewfinder and still capture setup).
+
Reconfiguration is done by enabling/disabling media links created by the driver
during initialization. The internal device topology can be easily discovered
through media entity and links enumeration.
When we configure these devices through sub-device API at user space, the
configuration flow must be from left to right, and the video node is
configured as last one.
+
When we don't use sub-device user space API the whole configuration of all
devices belonging to the pipeline is done at the video node driver.
The sysfs entry allows to instruct the capture node driver not to configure