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Commit 4102a9e5 authored by Rob Clark's avatar Rob Clark Committed by Dave Airlie
Browse files

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



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: default avatarRob Clark <robdclark@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 10c1b618

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

+3 −0
Original line number Diff line number Diff line
@@ -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;

include/uapi/drm/msm_drm.h

+1 −0
Original line number Diff line number Diff line
@@ -50,6 +50,7 @@ struct drm_msm_timespec { 
#define MSM_PARAM_GPU_ID     0x01

#define MSM_PARAM_GMEM_SIZE  0x02

#define MSM_PARAM_CHIP_ID    0x03

#define MSM_PARAM_MAX_FREQ   0x04



struct drm_msm_param {

	__u32 pipe;           /* in, MSM_PIPE_x */