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drm/msm/a6xx: restore previous freq on resume 

Previously, if the freq were overriden (ie. via sysfs), it would get
reset to max on resume.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
This commit is contained in:
Rob Clark 2019-11-18 15:39:11 -08:00
parent 7ec9741b19
commit bd3fe8119d
2 changed files with 9 additions and 2 deletions
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8
drivers/gpu/drm/msm/adreno/a6xx_gmu.c
View File

@ -149,6 +149,8 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, unsigned long freq)
if (freq == gmu->gpu_freqs[perf_index])
break;
gmu->current_perf_index = perf_index;
__a6xx_gmu_set_freq(gmu, perf_index);
}
@ -741,8 +743,8 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~A6XX_HFI_IRQ_MASK);
enable_irq(gmu->hfi_irq);
/* Set the GPU to the highest power frequency */
__a6xx_gmu_set_freq(gmu, gmu->nr_gpu_freqs - 1);
/* Set the GPU to the current freq */
__a6xx_gmu_set_freq(gmu, gmu->current_perf_index);
/*
* "enable" the GX power domain which won't actually do anything but it
@ -1166,6 +1168,8 @@ static int a6xx_gmu_pwrlevels_probe(struct a6xx_gmu *gmu)
gmu->nr_gpu_freqs = a6xx_gmu_build_freq_table(&gpu->pdev->dev,
gmu->gpu_freqs, ARRAY_SIZE(gmu->gpu_freqs));
gmu->current_perf_index = gmu->nr_gpu_freqs - 1;
/* Build the list of RPMh votes that we'll send to the GMU */
return a6xx_gmu_rpmh_votes_init(gmu);
}

3
drivers/gpu/drm/msm/adreno/a6xx_gmu.h
View File

@ -63,6 +63,9 @@ struct a6xx_gmu {
struct clk_bulk_data *clocks;
struct clk *core_clk;
/* current performance index set externally */
int current_perf_index;
int nr_gpu_freqs;
unsigned long gpu_freqs[16];
u32 gx_arc_votes[16];