Re: [PATCH v5 01/13] [media] exynos5-is: Adding media device driver for exynos5

From: Shaik Ameer Basha <redacted>

This patch adds support for media device for EXYNOS5 SoCs.
The current media device supports the following ips to connect
through the media controller framework.

* MIPI-CSIS
  Support interconnection(subdev interface) between devices

* FIMC-LITE
  Support capture interface from device(Sensor, MIPI-CSIS) to memory
  Support interconnection(subdev interface) between devices

* FIMC-IS
  Camera post-processing IP having multiple sub-nodes.

G-Scaler will be added later to the current media device.

The media device creates two kinds of pipelines for connecting
the above mentioned IPs.
The pipeline0 is uses Sensor, MIPI-CSIS and FIMC-LITE which captures
image data and dumps to memory.
Pipeline1 uses FIMC-IS components for doing post-processing
operations on the captured image and give scaled YUV output.

Pipeline0
  +--------+     +-----------+     +-----------+     +--------+
  | Sensor | --> | MIPI-CSIS | --> | FIMC-LITE | --> | Memory |
  +--------+     +-----------+     +-----------+     +--------+

Pipeline1
 +--------+      +--------+     +-----------+     +-----------+
 | Memory | -->  |  ISP   | --> |    SCC    | --> |    SCP    |
 +--------+      +--------+     +-----------+     +-----------+

Signed-off-by: Shaik Ameer Basha <redacted>
Signed-off-by: Arun Kumar K <redacted>
---
 .../devicetree/bindings/media/exynos5-mdev.txt     |  130 +++
 drivers/media/platform/exynos5-is/exynos5-mdev.c   | 1218 ++++++++++++++++++++
 drivers/media/platform/exynos5-is/exynos5-mdev.h   |  160 +++
 3 files changed, 1508 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/exynos5-mdev.txt
 create mode 100644 drivers/media/platform/exynos5-is/exynos5-mdev.c
 create mode 100644 drivers/media/platform/exynos5-is/exynos5-mdev.h

diff --git a/Documentation/devicetree/bindings/media/exynos5-mdev.txt b/Documentation/devicetree/bindings/media/exynos5-mdev.txt
new file mode 100644
index 0000000..007ce21
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/exynos5-mdev.txt

@@ -0,0 +1,130 @@
+Samsung EXYNOS5 SoC Camera Subsystem
+------------------------------------
+
+The Exynos5 SoC Camera subsystem comprises of multiple sub-devices
+represented by separate device tree nodes. Currently this includes: FIMC-LITE,
+MIPI CSIS and FIMC-IS.
+
+The sub-subdevices are defined as child nodes of the common 'camera' node which
+also includes common properties of the whole subsystem not really specific to
+any single sub-device, like common camera port pins or the CAMCLK clock outputs
+for external image sensors attached to an SoC.
+
+Common 'camera' node
+--------------------
+
+Required properties:
+
+- compatible   : must be "samsung,exynos5-fimc", "simple-bus"