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Gmane
From: Arun Kumar K <arun.kk <at> samsung.com>
Subject: [RFC v2 00/10] Exynos5 FIMC-IS driver
Newsgroups: gmane.linux.drivers.video-input-infrastructure
Date: Friday 31st May 2013 13:03:18 UTC (over 4 years ago)
Changes from v1
---------------
- Addressed all review comments from Sylwester
- Made sensor subdevs as independent i2c devices
- Lots of cleanup
- Debugfs support added
- Removed PMU global register access

Description
-----------
This patchset adds a new driver for the FIMC-IS IP available in
Samsung Exynos5 SoC onwards. The camera subsystem in Exynos5 is
significantly
different from that of Exynos4 and before.
In Exynos4, the FIMC-IS is a sub component of the camera subsystem which
takes input from fimc-lite and does post processing of the image and passes
it to the fimc-capture which writes to the output DMA.

But in case of Exynos5, the fimc-capture IP is removed and instead a more
powerful fimc-is takes the role of giving scaled image output via DMA.
FIMC-IS internally has two scalers for this in addition to other
post-processing components like dynamic range compression,
optical distortion correction, digital image stabilization, 3D noise
reduction
and face detection.

FIMC-IS firmware can directly control certain sensors and the
sensors compatible with the fimc-is will be termed as fimc-is sensors.
This patchset adds support for two such fimc-is sensors - s5k4e5 and
s5k6a3.
These sensors are controlled exclusively by the fimc-is firmware at
present.
They provide only SRGB unscaled output which will reach fimc-is
via mipi-csis and fimc-lite. The color space conversion, scaling and all
other
post processing will be then done by the fimc-is IP components.

The fimc-is driver operates in the following manner:
The sensor subdevice created by this driver will be used by the exynos5
media-device's pipeline0 which connects it with mipi-csis and fimc-lite.

|fimc-is-sensor|--->|mipi-csis|--->|fimc-lite|--->|Memory|

The output bayer image dumped by the fimc-lite subdev into memory is fed
into the ISP subdev of fimc-is driver. For that the pipeline1 of exynos5
media-device will look like this:

|Memory|--->|fimc-is-isp|--->|fimc-is-scaler-codec|--->|fimc-is-scaler-preview|

The isp subdev accepts bayer input buffer at its OUTPUT_MPLANE. It will
do a set of post processing operations and passes it on-the-fly to the
scalers. The two scalers can give two different scaled outputs which can
be used for recording and preview simultaneously. Both scaler-codec and
scaler-preview dumps DMA data out through its CAPTURE_MPLANE.

This patchset adds basic version of the driver which accepts
bayer input data and provides 2 different scaled outputs with most of
the post processing blocks disabled.


Arun Kumar K (10):
  exynos5-fimc-is: Add Exynos5 FIMC-IS device tree bindings
    documentation
  exynos5-fimc-is: Adds fimc-is driver core files
  exynos5-fimc-is: Adds common driver header files
  exynos5-fimc-is: Adds the register definition and context header
  exynos5-fimc-is: Adds the sensor subdev
  exynos5-fimc-is: Adds isp subdev
  exynos5-fimc-is: Adds scaler subdev
  exynos5-fimc-is: Adds the hardware pipeline control
  exynos5-fimc-is: Adds the hardware interface module
  exynos5-fimc-is: Adds the Kconfig and Makefile

 .../devicetree/bindings/media/exynos5-fimc-is.txt  |   41 +
 drivers/media/platform/exynos5-is/Kconfig          |   12 +
 drivers/media/platform/exynos5-is/Makefile         |    3 +
 drivers/media/platform/exynos5-is/fimc-is-cmd.h    |  201 ++
 drivers/media/platform/exynos5-is/fimc-is-core.c   |  304 +++
 drivers/media/platform/exynos5-is/fimc-is-core.h   |  126 ++
 drivers/media/platform/exynos5-is/fimc-is-err.h    |  261 +++
 .../media/platform/exynos5-is/fimc-is-interface.c  | 1025 ++++++++++
 .../media/platform/exynos5-is/fimc-is-interface.h  |  131 ++
 drivers/media/platform/exynos5-is/fimc-is-isp.c    |  438 +++++
 drivers/media/platform/exynos5-is/fimc-is-isp.h    |   89 +
 .../media/platform/exynos5-is/fimc-is-metadata.h   |  771 ++++++++
 drivers/media/platform/exynos5-is/fimc-is-param.h  | 1259 +++++++++++++
 .../media/platform/exynos5-is/fimc-is-pipeline.c   | 1959
++++++++++++++++++++
 .../media/platform/exynos5-is/fimc-is-pipeline.h   |  129 ++
 drivers/media/platform/exynos5-is/fimc-is-regs.h   |  107 ++
 drivers/media/platform/exynos5-is/fimc-is-scaler.c |  492 +++++
 drivers/media/platform/exynos5-is/fimc-is-scaler.h |  107 ++
 drivers/media/platform/exynos5-is/fimc-is-sensor.c |  463 +++++
 drivers/media/platform/exynos5-is/fimc-is-sensor.h |  168 ++
 drivers/media/platform/exynos5-is/fimc-is.h        |  151 ++
 21 files changed, 8237 insertions(+)
 create mode 100644
Documentation/devicetree/bindings/media/exynos5-fimc-is.txt
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-cmd.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-core.c
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-core.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-err.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-interface.c
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-interface.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-isp.c
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-isp.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-metadata.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-param.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-pipeline.c
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-pipeline.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-regs.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-scaler.c
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-scaler.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-sensor.c
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is-sensor.h
 create mode 100644 drivers/media/platform/exynos5-is/fimc-is.h

-- 
1.7.9.5
 
CD: 18ms