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Linux/Documentation/userspace-api/media/mediactl/media-controller-model.rst

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Diff markup

Differences between /Documentation/userspace-api/media/mediactl/media-controller-model.rst (Version linux-6.12-rc7) and /Documentation/userspace-api/media/mediactl/media-controller-model.rst (Version linux-2.4.37.11)


  1 .. SPDX-License-Identifier: GFDL-1.1-no-invari    
  2                                                   
  3 .. _media-controller-model:                       
  4                                                   
  5 Media device model                                
  6 ==================                                
  7                                                   
  8 Discovering a device internal topology, and co    
  9 is one of the goals of the media controller AP    
 10 hardware devices and Linux Kernel interfaces a    
 11 objects on an oriented graph. The object types    
 12 are:                                              
 13                                                   
 14 -  An **entity** is a basic media hardware or     
 15    It can correspond to a large variety of log    
 16    physical hardware devices (CMOS sensor for     
 17    hardware devices (a building block in a Sys    
 18    processing pipeline), DMA channels or physi    
 19                                                   
 20 -  An **interface** is a graph representation     
 21    userspace API interface, like a device node    
 22    controls one or more entities in the graph.    
 23                                                   
 24 -  A **pad** is a data connection endpoint thr    
 25    interact with other entities. Data (not res    
 26    by an entity flows from the entity's output    
 27    inputs. Pads should not be confused with ph    
 28    boundaries.                                    
 29                                                   
 30 -  A **data link** is a point-to-point oriente    
 31    pads, either on the same entity or on diffe    
 32    from a source pad to a sink pad.               
 33                                                   
 34 -  An **interface link** is a point-to-point b    
 35    connection between a Linux Kernel interface    
 36                                                   
 37 - An **ancillary link** is a point-to-point co    
 38   entities form a single logical unit. For exa    
 39   fact that a particular camera sensor and len    
 40   physical module, meaning this lens controlle    
 41   camera sensor.                                  
                                                      

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