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From bc04d91127b508a61007613a0d30d0cd38ede3f3 Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@amd.com>
Date: Thu, 17 Jan 2019 17:48:30 +0800
Subject: [PATCH 1121/2940] drm/amd/powerplay: avoid unnecessary dpm level
setting
No dpm level setting is needed when the request level
is actually same as current.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c
index 56437866d120..68f3dcaa8070 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c
@@ -278,7 +278,8 @@ int psm_adjust_power_state_dynamic(struct pp_hwmgr *hwmgr, bool skip,
phm_notify_smc_display_config_after_ps_adjustment(hwmgr);
- if (!phm_force_dpm_levels(hwmgr, hwmgr->request_dpm_level))
+ if ((hwmgr->request_dpm_level != hwmgr->dpm_level) &&
+ !phm_force_dpm_levels(hwmgr, hwmgr->request_dpm_level))
hwmgr->dpm_level = hwmgr->request_dpm_level;
if (hwmgr->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL) {
--
2.17.1
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