drm/msm/a6xx: Add devfreq support for a6xx

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Implement routines to estimate GPU busy time and fetching the
current frequency for the polling interval. This is required by
the devfreq framework which recommends a frequency change if needed.
The driver code then tries to set this new frequency on the GPU by
sending an Out Of Band(OOB) request to the GMU.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

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Sharat Masetty 2018-10-04 15:11:43 +05:30 • committed by Rob Clark

parent de0a3d094d

commit a2c3c0a54d

4 changed files with 67 additions and 5 deletions

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40

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

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2

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

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27

drivers/gpu/drm/msm/adreno/a6xx_gpu.c

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3

drivers/gpu/drm/msm/adreno/a6xx_gpu.h

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