drm/msm/a6xx: Move CX GMU power counter enablement to hw_init

Since the introduction of A6xx support, we've been enabling the CX GMU
power counter 0 in a bit of a weird spot. Move it to hw_init so that
GMU wrapper GPUs can reuse the same code paths. As a bonus, this order
makes it easier to compare mainline and downstream register access traces.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/542765/
Signed-off-by: Rob Clark <robdclark@chromium.org>

Author: konradybcio

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

@@ -479,12 +479,6 @@ static int a6xx_rpmh_start(struct a6xx_gmu *gmu)
 
 	gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0);
 
-	/* Set up CX GMU counter 0 to count busy ticks */
-	gmu_write(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_MASK, 0xff000000);
-	gmu_rmw(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_SELECT_0, 0xff, 0x20);
-
-	/* Enable the power counter */
-	gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 1);
 	return 0;
 }
 

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

@@ -1256,6 +1256,13 @@ static int hw_init(struct msm_gpu *gpu)
 			0x3f0243f0);
 	}
 
+	/* Set up the CX GMU counter 0 to count busy ticks */
+	gmu_write(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_MASK, 0xff000000);
+
+	/* Enable the power counter */
+	gmu_rmw(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_SELECT_0, 0xff, BIT(5));
+	gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 1);
+
 	/* Protect registers from the CP */
 	a6xx_set_cp_protect(gpu);