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29bbb93080
At boot time, if we detect that a pixelvalve has been enabled, we need to be able to retrieve the HVS channel it has been assigned to so that we can disable that channel too. Let's create that function that returns the FIFO or an error from a given output. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/178192d90874559b8386139f2226e773347729fc.1599120059.git-series.maxime@cerno.tech
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.
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.