mainlining shenanigans
d6ef9b4175
[Why] The vblank and pageflip interrupts should only be enabled for a CRTC that's enabled and has active planes. The current logic takes care of this, but isn't setup to handle the case where the active plane count goes to zero but the stream remains enabled. We currently block this case since we don't allow commits that enable a CRTC with no active planes, but shouldn't be any reason we can't support this from a hardware perspective and many userspace applications expect to be able to do it (like IGT). [How] The count_crtc_active_planes function fills in the number of "active_planes" on the dm_crtc_state. This should be the same as DC's plane_count on the stream_status but easier to access since we don't need to lock the private atomic state with the DC context. Add the "interrupts_enabled" flag to the dm_crtc_state and set it based on whether the stream exists and if there are active planes on the stream. Update the disable and enable logic to make use of this new flag. There shouldn't be any functional change (yet) with this patch. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: David Francis <David.Francis@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.