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We need to block DC6 entry in case of Panel Replay as enabling VBI doesn't prevent DC6 in case of Panel Replay. This causes problems if user-space is polling for vblank events. Fix this by setting target DC state as DC_STATE_EN_UPTO_DC5 when both source and sink are supporting eDP Panel Replay and VBI is enabled. v4: - s/vblank_work/vblank_dc_work/ - changed type of block_dc_for_vblank to bool v3: - do flush_work for vblank_work on intel_crtc_vblank_off - no need to use READ_ONCE in bdw_enable_vblank - check crtc->block_dc_for_vblank in bdw_disable_vblank as well - move adding block_dc_for_vblank into this patch v2: - use READ_ONCE in intel_display_vblank_work - use DC_STATE_DISABLE instead of DC_STATE_EN_UPTO_DC6 - use intel_crtc->block_dc6_needed Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2296 Signed-off-by: Jouni Högander <jouni.hogander@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240920062340.1333777-3-jouni.hogander@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 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.