Jouni Högander 39e4d3c2f8 drm/i915/psr: Apply underrun on PSR idle workaround
This patch is applying workaround for underrun on idle PSR HW issue
(Wa_16025596647) when PSR is getting enabled. It uses vblank enable/disable
status, DC5/6 enabled disabled and enabled pipes count information made
available.

This patch is also adding calls to dc5/dc6, vblank enable/disable and pipe
enable/disable notification functions as needed.
intel_psr_needs_block_dc_vblank is modified to get vblank enable/disable
notification on PSR capable system.

v2: use intel_dmc interface instead of directly writing dmc register

Bspec: 74151
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://lore.kernel.org/r/20250414100508.1208774-12-jouni.hogander@intel.com
2025-04-23 12:16:31 +03:00
2025-02-25 17:36:09 +10:00
2025-02-25 17:36:09 +10:00
2025-02-04 11:27:45 -05:00
2025-02-17 22:40:03 -08:00
2025-04-01 11:46:58 +03:00
2025-02-23 12:32:57 -08:00

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 reStructuredText 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.
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