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Diffstat (limited to '')
-rw-r--r-- | Documentation/admin-guide/media/fimc.rst (renamed from Documentation/media/v4l-drivers/fimc.rst) | 30 |
1 files changed, 6 insertions, 24 deletions
diff --git a/Documentation/media/v4l-drivers/fimc.rst b/Documentation/admin-guide/media/fimc.rst index 74585ba48b7f..267ef52fe387 100644 --- a/Documentation/media/v4l-drivers/fimc.rst +++ b/Documentation/admin-guide/media/fimc.rst @@ -2,7 +2,7 @@ .. include:: <isonum.txt> -The Samsung S5P/EXYNOS4 FIMC driver +The Samsung S5P/Exynos4 FIMC driver =================================== Copyright |copy| 2012 - 2013 Samsung Electronics Co., Ltd. @@ -14,12 +14,12 @@ data from LCD controller (FIMD) through the SoC internal writeback data path. There are multiple FIMC instances in the SoCs (up to 4), having slightly different capabilities, like pixel alignment constraints, rotator availability, LCD writeback support, etc. The driver is located at -drivers/media/platform/exynos4-is directory. +drivers/media/platform/samsung/exynos4-is directory. Supported SoCs -------------- -S5PC100 (mem-to-mem only), S5PV210, EXYNOS4210 +S5PC100 (mem-to-mem only), S5PV210, Exynos4210 Supported features ------------------ @@ -38,26 +38,6 @@ Not currently supported - 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 --------------------- @@ -65,7 +45,7 @@ Media device interface ~~~~~~~~~~~~~~~~~~~~~~ The driver supports Media Controller API as defined at :ref:`media_controller`. -The media device driver name is "SAMSUNG S5P FIMC". +The media device driver name is "Samsung S5P FIMC". The purpose of this interface is to allow changing assignment of FIMC instances to the SoC peripheral camera input at runtime and optionally to control internal @@ -74,6 +54,7 @@ connections of the MIPI-CSIS device(s) to the FIMC entities. 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. @@ -116,6 +97,7 @@ sensor subdev -> mipi-csi subdev -> fimc subdev -> video node 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 |