[PATCH 3/3] drm/amd/powerplay: disallow slow switch if NBPState is disabled

[Evan Quan]

Otherwise there may be potential SMU performance issues.

Change-Id: I05a09bb05407f7b3705d79a1d2c6628385c80461
Signed-off-by: Evan Quan <evan.q...@amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c | 5 ++++-
 drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c | 5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c 
b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
index 002ed77a5268..ccb587607b03 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
@@ -3779,9 +3779,12 @@ static int 
vega10_notify_smc_display_config_after_ps_adjustment(
        struct PP_Clocks min_clocks = {0};
        uint32_t i;
        struct pp_display_clock_request clock_req;
+       bool uclk_switching_disabled =
+                       (bool)hwmgr->display_config->nb_pstate_switch_disable;
 
        if ((hwmgr->display_config->num_display > 1) &&
-            !hwmgr->display_config->multi_monitor_in_sync)
+            !hwmgr->display_config->multi_monitor_in_sync &&
+            !uclk_switching_disabled)
                vega10_notify_smc_display_change(hwmgr, false);
        else
                vega10_notify_smc_display_change(hwmgr, true);
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c 
b/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
index 35f96dacb50a..e3b11ae8fdb8 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
@@ -1387,9 +1387,12 @@ static int 
vega12_notify_smc_display_config_after_ps_adjustment(
                        (struct vega12_hwmgr *)(hwmgr->backend);
        struct PP_Clocks min_clocks = {0};
        struct pp_display_clock_request clock_req;
+       bool uclk_switching_disabled =
+                       (bool)hwmgr->display_config->nb_pstate_switch_disable;
 
        if ((hwmgr->display_config->num_display > 1) &&
-               !hwmgr->display_config->multi_monitor_in_sync)
+            !hwmgr->display_config->multi_monitor_in_sync &&
+            !uclk_switching_disabled)
                vega12_notify_smc_display_change(hwmgr, false);
        else
                vega12_notify_smc_display_change(hwmgr, true);
-- 
2.18.0

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