[media] demux.h: Some documentation fixups for the header
The DocBook description of this header has two issues: - It calls the Kernel ABI as API, instead of kABI; - It mentions that the DVB frontend kABI is not described within the document. As this will actually generate a single DocBook, this is actually not true, now that the documentation for the frontend was added. So, fix both issues. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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@ -35,31 +35,31 @@
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/**
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* DOC: Digital TV Demux
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*
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* The kernel demux API defines a driver-internal interface for registering
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* low-level, hardware specific driver to a hardware independent demux layer.
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* It is only of interest for Digital TV device driver writers.
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* The header file for this API is named demux.h and located in
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* The Kernel Digital TV Demux kABI defines a driver-internal interface for
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* registering low-level, hardware specific driver to a hardware independent
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* demux layer. It is only of interest for Digital TV device driver writers.
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* The header file for this kABI is named demux.h and located in
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* drivers/media/dvb-core.
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*
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* The demux API should be implemented for each demux in the system. It is
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* The demux kABI should be implemented for each demux in the system. It is
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* used to select the TS source of a demux and to manage the demux resources.
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* When the demux client allocates a resource via the demux API, it receives
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* a pointer to the API of that resource.
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* When the demux client allocates a resource via the demux kABI, it receives
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* a pointer to the kABI of that resource.
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*
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* Each demux receives its TS input from a DVB front-end or from memory, as
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* set via this demux API. In a system with more than one front-end, the API
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* set via this demux kABI. In a system with more than one front-end, the kABI
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* can be used to select one of the DVB front-ends as a TS source for a demux,
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* unless this is fixed in the HW platform.
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*
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* The demux API only controls front-ends regarding to their connections with
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* demuxes; the APIs used to set the other front-end parameters, such as
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* tuning, are not defined in this document.
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* The demux kABI only controls front-ends regarding to their connections with
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* demuxes; the kABI used to set the other front-end parameters, such as
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* tuning, are devined via the Digital TV Frontend kABI.
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*
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* The functions that implement the abstract interface demux should be defined
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* static or module private and registered to the Demux core for external
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* access. It is not necessary to implement every function in the struct
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* &dmx_demux. For example, a demux interface might support Section filtering,
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* but not PES filtering. The API client is expected to check the value of any
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* but not PES filtering. The kABI client is expected to check the value of any
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* function pointer before calling the function: the value of NULL means
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* that the function is not available.
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*
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@ -71,7 +71,7 @@
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* Even a simple memory allocation without using %GFP_ATOMIC can result in a
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* kernel thread being put to sleep if swapping is needed. For example, the
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* Linux Kernel calls the functions of a network device interface from a
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* bottom half context. Thus, if a demux API function is called from network
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* bottom half context. Thus, if a demux kABI function is called from network
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* device code, the function must not sleep.
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*/
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