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Now that we track framestart_delay in the crtc state with readout and state checker support we can remove the explicit framestart_delay sanitation code. Also I'm not convinced reprogramming this while the pipe is running is even valid. CHICKEN_TRANS (hsw+) and TRANS_CHICKEN2 (cpt+) docs at least make no mention of double buffering which seems to imply that live reprogramming is not supported. On older platforms PIPECONF and PCH_TRANSCONF (ibx) are double buffered though, so might be that we could do this on the older platforms. But doesn't really make sense to special case old platforms for this. So from now on if the BIOS has misprogrammed this we shall simply do a full modeset at boot to fix it up. Such systems will of course lose fastboot, but I think less code (and less uncertainty what reprogramming this on a running pipe will even do) outweighs that. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220221110356.5532-2-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com> |
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| 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.