linux-kernel - [PATCH v4 3/7] drm: msm: a6xx: set gpu freq through hfi

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Message-Id: <1594324828-9571-4-git-send-email-akhilpo@codeaurora.org>
Date:   Fri, 10 Jul 2020 01:30:23 +0530
From:   Akhil P Oommen <akhilpo@...eaurora.org>
To:     freedreno@...ts.freedesktop.org
Cc:     dri-devel@...edesktop.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jcrouse@...eaurora.org,
        smasetty@...eaurora.org, devicetree@...r.kernel.org,
        mka@...omium.org, saravanak@...gle.com, sibis@...eaurora.org,
        viresh.kumar@...aro.org, jonathan@...ek.ca
Subject: [PATCH v4 3/7] drm: msm: a6xx: set gpu freq through hfi

Newer targets support changing gpu frequency through HFI. So
use that wherever supported instead of the legacy method.

Signed-off-by: Akhil P Oommen <akhilpo@...eaurora.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 233afea..b547339 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -121,6 +121,12 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp)
 		if (gpu_freq == gmu->gpu_freqs[perf_index])
 			break;
 
+	if (!gmu->legacy) {
+		a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
+		icc_set_bw(gpu->icc_path, 0, MBps_to_icc(7216));
+		return;
+	}
+
 	gmu->current_perf_index = perf_index;
 	gmu->freq = gmu->gpu_freqs[perf_index];
 
@@ -893,10 +899,7 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
 	enable_irq(gmu->hfi_irq);
 
 	/* Set the GPU to the current freq */
-	if (gmu->legacy)
-		a6xx_gmu_set_initial_freq(gpu, gmu);
-	else
-		a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
+	a6xx_gmu_set_initial_freq(gpu, gmu);
 
 	/*
 	 * "enable" the GX power domain which won't actually do anything but it
-- 
2.7.4