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16f17eda8b
[Why] For DCN hardware, the crtc_high_irq handler is assigned to the vstartup interrupt. This is different from DCE, which has it assigned to vblank start. We'd like to send vblank and user events at vstartup because: * It happens close enough to vupdate - the point of no return for HW. * It is programmed as lines relative to vblank end - i.e. it is not in the variable portion when VRR is enabled. We should signal user events here. * The pflip interrupt responsible for sending user events today only fires if the DCH HUBP component is not clock gated. In situations where planes are disabled - but the CRTC is enabled - user events won't be sent out, leading to flip done timeouts. Consequently, this makes vupdate on DCN hardware redundant. It will be removed in the next change. [How] Add a DCN-specific crtc_high_irq handler, and hook it to the VStartup signal. Inside the DCN handler, we send off user events if the pflip handler hasn't already done so. Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
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| README | ||
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.