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drm/msm: add max-freq gpu param to uapi

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We need this in userspace for interpreting some of the perf ctrs.

Note possibly not quite sufficient if we had some frequency mgmt
approach other than race-to-idle.  Not really sure what the best
thing to do if we did.  Although displaying results as a percentage
of max frequence seems sensible(ish) if we did.

Signed-off-by: Rob Clark <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
This commit is contained in:
Rob Clark 2016-02-09 12:05:30 -05:00 • committed by Dave Airlie
commit 4102a9e532
2 changed files with 4 additions and 0 deletions
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3
drivers/gpu/drm/msm/adreno/adreno_gpu.c
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@ -41,6 +41,9 @@ int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value)
(adreno_gpu->rev.major << 16) |
(adreno_gpu->rev.core << 24);
return 0;
case MSM_PARAM_MAX_FREQ:
*value = adreno_gpu->base.fast_rate;
return 0;
default:
DBG("%s: invalid param: %u", gpu->name, param);
return -EINVAL;