[PATCH] drm/amd/display: Allow idle optimization based on vblank.

[Bindu Ramamurthy]

[Why]
idle optimization was being disabled after commit.

[How]
check vblank count for display off and enable idle optimization based on this count.

Signed-off-by: Bindu Ramamurthy <bindu.r at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 553e39f9538c..56a55143ad2d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -987,7 +987,7 @@ static void event_mall_stutter(struct work_struct *work)
 
 	if (vblank_work->enable)
 		dm->active_vblank_irq_count++;
-	else
+	else if(dm->active_vblank_irq_count)
 		dm->active_vblank_irq_count--;
 
 	dc_allow_idle_optimizations(
@@ -8694,7 +8694,10 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
 		WARN_ON(!dc_commit_state(dm->dc, dc_state));
 		mutex_unlock(&dm->dc_lock);
 	}
-
+    /* Allow idle optimization when vblank count is 0 for display off */
+    if (dm->active_vblank_irq_count == 0)
+               dc_allow_idle_optimizations(dm->dc,true);
+			   
 	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
 		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
 
-- 
2.25.1