[PATCH 08/16] WIP: drm/i915/display: Drop unecessary frontbuffer flushes

[José Roberto de Souza]

All of those flushes are not necessary and only causing power-savings
features to be disarmed and saving less power.

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 3 ---
 drivers/gpu/drm/i915/display/intel_fbdev.c   | 2 --
 2 files changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f27c294beb926..b5cb71e36f8f8 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1607,8 +1607,6 @@ intel_find_initial_plane_obj(struct intel_crtc *crtc,
 	plane_state->uapi.crtc = &crtc->base;
 	intel_plane_copy_uapi_to_hw_state(plane_state, plane_state, crtc);
 
-	intel_frontbuffer_flush(to_intel_frontbuffer(fb), ORIGIN_DIRTYFB);
-
 	atomic_or(plane->frontbuffer_bit, &to_intel_frontbuffer(fb)->bits);
 }
 
@@ -10666,7 +10664,6 @@ intel_prepare_plane_fb(struct drm_plane *_plane,
 		return ret;
 
 	i915_gem_object_wait_priority(obj, 0, &attr);
-	i915_gem_object_flush_frontbuffer(obj, ORIGIN_DIRTYFB);
 
 	if (!new_plane_state->uapi.fence) { /* implicit fencing */
 		struct dma_fence *fence;
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 60d3ded270476..53484267b2a4a 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -230,8 +230,6 @@ static int intelfb_create(struct drm_fb_helper *helper,
 		goto out_unlock;
 	}
 
-	intel_frontbuffer_flush(to_frontbuffer(ifbdev), ORIGIN_DIRTYFB);
-
 	info = drm_fb_helper_alloc_fbi(helper);
 	if (IS_ERR(info)) {
 		drm_err(&dev_priv->drm, "Failed to allocate fb_info\n");
-- 
2.33.0