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As described in: https://patchwork.freedesktop.org/patch/msgid/20190228210939.83386-2-sean@poorly.run From the driver's perspective, this works like a regular disable/enable cycle. The driver need only check the 'psr_transition' state in connector_state and keep the panel turned on when in .disable(), while everything else will cycle off as normal. If drivers want more control, they can use the psr_transition state to enter a low-power state to minimize PSR exit time. While this carries the PSR moniker, it is not specific to the DisplayPort technology. This can be used for power savings with other types of self refresh, such as MIPI command mode. Change-Id: I80799c7f1356645e50dae98159591dde6aa5abff Signed-off-by: Guochun Huang <hero.huang@rock-chips.com>
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.