drm/msm/a6xx: Poll for HFI responses

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The only HFI communication with the GMU on sdm845 happens
during initialization and all commands are synchronous. A fancy
interrupt tasklet and associated infrastructure is entirely
not eeded and puts us at the mercy of the scheduler.

Instead poll for the message signal and handle the response
immediately and go on our way.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

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Jordan Crouse 2018-09-20 17:04:43 -06:00 • committed by Rob Clark

parent 32aa27e15c

commit df0dff1329

3 changed files with 57 additions and 120 deletions

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13

drivers/gpu/drm/msm/adreno/a6xx_gmu.c

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3

drivers/gpu/drm/msm/adreno/a6xx_gmu.h

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167

drivers/gpu/drm/msm/adreno/a6xx_hfi.c

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