drm/i915: Track the temporary wakerefs used for hsw_get_pipe_config

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Haswell+ require many power wells to probe the current HW display state.
Under the wakeref tracking scheme, we want each owner to store and
release the wakeref they use, so we can identify callers that have
leaked their wakeref. For hsw_get_pipe_config, this means we have to
keep the array of all wakerefs as it current acquires its power wells
piecemeal and releases them en masse.

By tracking these wakerefs, we should be able to eliminate a lot of
noise from the runtime-pm debug logs.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190406080341.2654-1-chris@chris-wilson.co.uk

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Chris Wilson 2019-04-06 09:03:41 +01:00

parent 141f3767e7

commit 513a4c5589

1 changed files with 33 additions and 13 deletions

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drivers/gpu/drm/i915/intel_display.c

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