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87ebcd42fb
The HVS found in the BCM2711 has 6 outputs and 3 FIFOs, with each output being connected to a pixelvalve, and some muxing between the FIFOs and outputs. Any output cannot feed from any FIFO though, and they all have a bunch of constraints. In order to support this, let's store the possible FIFOs each output can be assigned to in the vc4_crtc_data, and use that information at atomic_check time to iterate over all the CRTCs enabled and assign them FIFOs. The channel assigned is then set in the vc4_crtc_state so that the rest of the driver can use it. 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: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://patchwork.freedesktop.org/patch/msgid/f9aba3814ef37156ff36f310118cdd3954dd3dc5.1599120059.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.