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Dirty rectangle feature allows FBC to recompress a subsection
of a frame. When this feature is enabled, display will read
the scan lines between dirty rectangle start line and dirty
rectangle end line in subsequent frames.
Use the merged damage clip stored in the plane state to
configure the FBC dirty rect areas.
v2: - Move dirty rect handling to fbc state (Ville)
v3: - Use intel_fbc_dirty_rect_update_noarm (Ville)
- Split plane damage collection and dirty rect preparation
- Handle case where dirty rect fall outside the visible region
v4: - A state variable to check if we need to update dirty rect
registers in case intel_fbc_can_flip_nuke() (Ville)
v5: - No need to use a separate valid flag, updates to the
conditions for prepare damage rect (Ville)
- Usage of locks in fbc dirty rect related functions (Ville)
v6: - updates dirty rect handling (Ville)
v7: - Loop through all planes in atomic state is good enough (Ville)
Bspec: 68881, 71675, 73424
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250228093802.27091-8-vinod.govindapillai@intel.com
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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.