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881ef729dda42c8de54edc239e2cc6b2521c8c76
HDMI status maybe incorrect in the following condition: HDMI plug in -> system sleep -> HDMI plug out -> system wake up. At this time, cat /sys/class/drm/card 0-HDMI-A-1/status is connected. There is no hpd interrupt, because HDMI is powerdown during suspend. So we need check the current HDMI status in this case. Test on rk3288 & rk3399. Change-Id: I2fbafd1d80b59628bca65e9e45760a24d1668241 Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
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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.
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