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rkvdec2 link mode use a new serialized work flow. This process is for link mode decoder in RK356x. The new flow run async with hardware and use multiple trigger event to run the work thread. All task operation, power operation and reset operation are serialzed in one thread with certain order. This is mainly for runtime debug and it will simplify the system design. rkvdec2 link mode use two sets of counters to control the hardware io: 1. write / read task for preparing link mode task to ddr. 2. send / recv task for sending / receiving task from hardware. All the operations are serialized in single work thread. So only a few of lock and atomic is required. The decoded counter and total counter are the synchronization method between driver and hardware. NOTE: 1. link mode reset should use sip_reset. 2. link mode should not change hardware frequency or power off when there is still task running. 3. link mode should not access hardware when there is an error happen. 4. link mode should reserve a stuff task for H.264 decode task. Signed-off-by: Herman Chen <herman.chen@rock-chips.com> Change-Id: I7736d54a64225089cd6d1b6522f660ce4481d437
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.