[Intel-gfx] [RFC v4] drm/hdcp: drm enum property for CP State

[Ramalingam C]

Wrapping the image, to make it compatible for viewers with 80Char limit.


On Saturday 05 August 2017 09:21 PM, Ramalingam C wrote:
> If a stream can be distributed to HDCP1.4 compliant devices also, that 
> is tagged as Type 0. Refer the below diagram for pictorial 
> representation for flow of encrypted stream tagged as Type 0 and 1. 
                  +-----------+
                  | HDCP v2.2 |
                  |Transmitter|
                  +-----+-----+
                        |
                        | v2.2 link
                        v
                   +----+----+
                   |HDCP v2.2|
                   | Repeater|
                   +--+---+--+
                      |   |
                      |   |
     v2.2 link +------+   +-------+ v1.4 link
               |                  |
               v                  v
          +----+----+        +----+----+
          |HDCP v2.2|        |HDCP v1.4|
          |  Panel  |        |  Panel  |
          +---------+        +---------+



                               HDCP v2.2 protected
   Type 0 Content                  Type 1 Content
      flow path                       flow path

          +                               +
          |                               |
          |                               |
          |                               |
          |                               |
          |                               |
          |                               |
        +-+-+                           +-+
        |   |                           |
+------+   +-------+            +------+
|                  |            |
v                  v            v

--Ram