22 Layer  section in Overview of D71 like display IPs
24 Layer is the first pipeline stage, which prepares the pixel data for the next
33 The usage of scaler is very flexible and can be connected to layer output
34 for layer scaling, or connected to compositor and scale the whole display
46 Writeback Layer (wb_layer)
48 Writeback layer does the opposite things of Layer, which connects to compiz
64 compared with Layer, like if Layer supports 4K input size, the scaler only can
66 introduces Layer Split, which splits the whole image to two half parts and feeds
73 Similar to Layer Split, but Splitter is used for writeback, which splits the
120          "Layer-0" -> "Scaler-0"
121          "Layer-1" -> "Scaler-0"
122          "Layer-2" -> "Scaler-1"
123          "Layer-3" -> "Scaler-1"
125          "Layer-0" -> "Compiz"
126          "Layer-1" -> "Compiz"
127          "Layer-2" -> "Compiz"
128          "Layer-3" -> "Compiz"
166          "Slave.Layer-0" -> "Slave.Scaler-0"
167          "Slave.Layer-1" -> "Slave.Scaler-0"
168          "Slave.Layer-2" -> "Slave.Scaler-1"
169          "Slave.Layer-3" -> "Slave.Scaler-1"
171          "Slave.Layer-0" -> "Slave.Compiz"
172          "Slave.Layer-1" -> "Slave.Compiz"
173          "Slave.Layer-2" -> "Slave.Compiz"
174          "Slave.Layer-3" -> "Slave.Compiz"
191          "Layer-0" -> "Scaler-0"
192          "Layer-1" -> "Scaler-0"
193          "Layer-2" -> "Scaler-1"
194          "Layer-3" -> "Scaler-1"
197          "Layer-0" -> "Compiz"
198          "Layer-1" -> "Compiz"
199          "Layer-2" -> "Compiz"
200          "Layer-3" -> "Compiz"
218 Layer(input) pipeline
222    :alt: Layer data digraph
223    :caption: Layer (input) data flow
234       "Layer-n" -> "Scaler-n" -> "Compiz"
238    :alt: Layer Split digraph
239    :caption: Layer Split pipeline
245       "Layer-0/1" -> "Scaler-0" -> "Merger"
246       "Layer-2/3" -> "Scaler-1" -> "Merger"
359 And a KMS-Plane may require multiple komeda resources: layer/scaler/compiz.
363 -   Plane: `Layer(input) pipeline`_
372 How to map plane to Layer(input) pipeline
375 Komeda has multiple Layer input pipelines, see:
379 The easiest way is binding a plane to a fixed Layer pipeline, but consider the
382 -   Layer Split, See `Layer(input) pipeline`_
388     special configurations to the layer and scaler. We'd better hide such HW
396     Layer according to plane_state->zpos.
398 So for komeda, the KMS-plane doesn't represent a fixed komeda layer pipeline,