ac220f5f75
PSR2 selective is not supported over rotated and scaled planes. We had the rotation check in intel_psr2_sel_fetch_config_valid() but that code path is only execute when a modeset is needed and those plane parameters can change without a modeset. Pipe selective fetch restrictions are also needed, it could be added in intel_psr_compute_config() but pippe scaling is computed after it is executed, so leaving as is for now. There is no much loss in this approach as it would cause selective fetch to not enabled as for alderlake-P and newer will cause it to switch to PSR1 that will have the same power-savings as do full pipe fetch. Also need to check those restricions in the second for_each_oldnew_intel_plane_in_state() loop because the state could only have a plane that is not affected by those restricitons but the damaged area intersect with planes that has those restrictions, so a full pipe fetch is required. v2: - also handling pipe restrictions BSpec: 55229 Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com> # v1 Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com> Signed-off-by: José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210930001409.254817-1-jose.souza@intel.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.