drm/i915: Eliminate PIPECONF RMWs from .color_commit()

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Eliminate the PIPECONF RMWs from .comit_commit() so
that we can finally declare the whole vblank evade part
(and the noarm() part) of the pipe commit free of register
reads. Or at least I hope that's the last read...

Only the i9xx/ilk codepaths need this for now, but let's
add the same thing for hsw+ just in case we want to start
calling that during fastsets at some point (eg. to change
dithering settings/etc.).

Should open up the way to start experimenting with
different DSB usage approaches for pipe commits.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220413192607.27533-1-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>

...

This commit is contained in:

Ville Syrjälä 2022-04-13 22:26:07 +03:00

parent 138c2fca6f

commit 3cdcdc34f3

3 changed files with 29 additions and 24 deletions

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21

drivers/gpu/drm/i915/display/intel_color.c

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30

drivers/gpu/drm/i915/display/intel_display.c

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2

drivers/gpu/drm/i915/display/intel_display.h

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