drm/i915/pc8: Add parent interface for PC8 forcewake tricks

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We use forcewake to prevent the SoC from actually entering
PC8 while performing the PC8 disable sequence. Hide that
behind a new parent interface to eliminate the naked
forcewake/uncore usage from the display power code.

v2: Mark the interface optional and warn if
    someone calls it when not provided (Jani)
    Include the header to make sure the extern
    declaration matches the definition (Jani)
v3: Rebase due to shuffling

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20251218182052.18756-1-ville.syrjala@linux.intel.com

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This commit is contained in:

Ville Syrjälä 2025-12-18 20:20:52 +02:00

parent 9236cf0ade

commit 35ec71285c

8 changed files with 76 additions and 4 deletions

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1

drivers/gpu/drm/i915/Makefile

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8

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

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17

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

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4

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

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31

drivers/gpu/drm/i915/i915_display_pc8.c

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9

drivers/gpu/drm/i915/i915_display_pc8.h

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2

drivers/gpu/drm/i915/i915_driver.c

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8

include/drm/intel/display_parent_interface.h

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