drm/i915: Add skl_wm_plane_disable_noatomic()

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Add skl_wm_plane_disable_noatomic() which will clear out all
the ddb and wm state for the plane. And let's do this _before_
we call plane->disable_arm() so that it'll actually clear out
the state in the hardware as well.

Currently this won't do anything new for most of the
intel_plane_disable_noatomic() calls since those are done before
wm readout, and thus everything wm/ddb related in the state
will still be zeroed anyway. The only difference will be for
skl_dbuf_sanitize() is happens after wm readout. But I'll be
reordering thigns so that wm readout happens earlier and at that
point this will guarantee that we still clear out the old
wm/ddb junk from the state.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306163420.3961-8-ville.syrjala@linux.intel.com

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Ville Syrjälä 2025-03-06 18:34:09 +02:00

parent 1dc6076c67

commit d34b59d5ba

3 changed files with 26 additions and 0 deletions

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2

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

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22

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

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2

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

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