[PATCH 01/15] drm/msm/a6xx: Honor perfmode_bw threshold on A8x

[Akhil P Oommen]

Instead of voting ACV for all bw corners for A8x GPU, restrict it to BW
votes above the perfmode_bw threshold, similar to the A7x GPUs.

Fixes: 288a93200892 ("drm/msm/adreno: Introduce A8x GPU Support")
Signed-off-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c   | 8 ++++++--
 drivers/gpu/drm/msm/adreno/adreno_gpu.h | 5 +++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 6d49c51df1a2..baf77a620572 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -1656,8 +1656,12 @@ static int a6xx_gmu_rpmh_bw_votes_init(struct adreno_gpu *adreno_gpu,
 			if (bcm->fixed) {
 				u32 perfmode = 0;
 
-				/* GMU on A6xx votes perfmode on all valid bandwidth */
-				if (!adreno_is_a7xx(adreno_gpu) ||
+				/*
+				 * GMU on A6xx votes perfmode on all valid
+				 * bandwidth. A7xx and A8xx only vote perfmode
+				 * above the perfmode_bw threshold.
+				 */
+				if (adreno_is_a6xx(adreno_gpu) ||
 				    (bcm->perfmode_bw && bw >= bcm->perfmode_bw))
 					perfmode = bcm->perfmode;
 
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 114a40f79ef3..bd5c440f1753 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -580,6 +580,11 @@ static inline int adreno_is_a750_family(struct adreno_gpu *gpu)
 	return gpu->info->family == ADRENO_7XX_GEN3;
 }
 
+static inline int adreno_is_a6xx(struct adreno_gpu *gpu)
+{
+	return (gpu->info->family >= ADRENO_6XX_GEN1) && (gpu->info->family < ADRENO_7XX_GEN1);
+}
+
 static inline int adreno_is_a7xx(struct adreno_gpu *gpu)
 {
 	/* Update with non-fake (i.e. non-A702) Gen 7 GPUs */

-- 
2.55.0