[PATCH 8/8] Revert "drm/amdgpu: Refactor flip into prepare submit and submit. (v3)"

[Harry Wentland]

This reverts commit cb341a319f7e66f879d69af929c3dadfc1a8f31e.
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 136 ++++++----------------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h    |  15 ---
 2 files changed, 28 insertions(+), 123 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index a6000ce6ff43..7bcc65b0c76d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -138,52 +138,10 @@ static void amdgpu_unpin_work_func(struct work_struct *__work)
 	kfree(work);
 }
 
-
-static void amdgpu_flip_work_cleanup(struct amdgpu_flip_work *work)
-{
-	int i;
-
-	amdgpu_bo_unref(&work->old_abo);
-	dma_fence_put(work->excl);
-	for (i = 0; i < work->shared_count; ++i)
-		dma_fence_put(work->shared[i]);
-	kfree(work->shared);
-	kfree(work);
-}
-
-static void amdgpu_flip_cleanup_unreserve(struct amdgpu_flip_work *work,
-					  struct amdgpu_bo *new_abo)
-{
-	amdgpu_bo_unreserve(new_abo);
-	amdgpu_flip_work_cleanup(work);
-}
-
-static void amdgpu_flip_cleanup_unpin(struct amdgpu_flip_work *work,
-				      struct amdgpu_bo *new_abo)
-{
-	if (unlikely(amdgpu_bo_unpin(new_abo) != 0))
-		DRM_ERROR("failed to unpin new abo in error path\n");
-	amdgpu_flip_cleanup_unreserve(work, new_abo);
-}
-
-void amdgpu_crtc_cleanup_flip_ctx(struct amdgpu_flip_work *work,
-				  struct amdgpu_bo *new_abo)
-{
-	if (unlikely(amdgpu_bo_reserve(new_abo, false) != 0)) {
-		DRM_ERROR("failed to reserve new abo in error path\n");
-		amdgpu_flip_work_cleanup(work);
-		return;
-	}
-	amdgpu_flip_cleanup_unpin(work, new_abo);
-}
-
-int amdgpu_crtc_prepare_flip(struct drm_crtc *crtc,
-			     struct drm_framebuffer *fb,
-			     struct drm_pending_vblank_event *event,
-			     uint32_t page_flip_flags,
-			     uint32_t target,
-			     struct amdgpu_flip_work **work_p,
-			     struct amdgpu_bo **new_abo_p)
+int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
+				 struct drm_framebuffer *fb,
+				 struct drm_pending_vblank_event *event,
+				 uint32_t page_flip_flags, uint32_t target)
 {
 	struct drm_device *dev = crtc->dev;
 	struct amdgpu_device *adev = dev->dev_private;
@@ -196,7 +154,7 @@ int amdgpu_crtc_prepare_flip(struct drm_crtc *crtc,
 	unsigned long flags;
 	u64 tiling_flags;
 	u64 base;
-	int r;
+	int i, r;
 
 	work = kzalloc(sizeof *work, GFP_KERNEL);
 	if (work == NULL)
@@ -257,79 +215,41 @@ int amdgpu_crtc_prepare_flip(struct drm_crtc *crtc,
 		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 		r = -EBUSY;
 		goto pflip_cleanup;
-
 	}
-	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
-
-	*work_p = work;
-	*new_abo_p = new_abo;
-
-	return 0;
-
-pflip_cleanup:
-	amdgpu_crtc_cleanup_flip_ctx(work, new_abo);
-	return r;
-
-unpin:
-	amdgpu_flip_cleanup_unpin(work, new_abo);
-	return r;
-
-unreserve:
-	amdgpu_flip_cleanup_unreserve(work, new_abo);
-	return r;
 
-cleanup:
-	amdgpu_flip_work_cleanup(work);
-	return r;
-
-}
-
-void amdgpu_crtc_submit_flip(struct drm_crtc *crtc,
-			     struct drm_framebuffer *fb,
-			     struct amdgpu_flip_work *work,
-			     struct amdgpu_bo *new_abo)
-{
-	unsigned long flags;
-	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
-
-	spin_lock_irqsave(&crtc->dev->event_lock, flags);
 	amdgpu_crtc->pflip_status = AMDGPU_FLIP_PENDING;
 	amdgpu_crtc->pflip_works = work;
 
+
+	DRM_DEBUG_DRIVER("crtc:%d[%p], pflip_stat:AMDGPU_FLIP_PENDING, work: %p,\n",
+					 amdgpu_crtc->crtc_id, amdgpu_crtc, work);
 	/* update crtc fb */
 	crtc->primary->fb = fb;
 	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
-
-	DRM_DEBUG_DRIVER(
-			"crtc:%d[%p], pflip_stat:AMDGPU_FLIP_PENDING, work: %p,\n",
-			amdgpu_crtc->crtc_id, amdgpu_crtc, work);
-
 	amdgpu_flip_work_func(&work->flip_work.work);
-}
-
-int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
-				 struct drm_framebuffer *fb,
-				 struct drm_pending_vblank_event *event,
-				 uint32_t page_flip_flags,
-				 uint32_t target)
-{
-	struct amdgpu_bo *new_abo;
-	struct amdgpu_flip_work *work;
-	int r;
+	return 0;
 
-	r = amdgpu_crtc_prepare_flip(crtc,
-				     fb,
-				     event,
-				     page_flip_flags,
-				     target,
-				     &work,
-				     &new_abo);
-	if (r)
-		return r;
+pflip_cleanup:
+	if (unlikely(amdgpu_bo_reserve(new_abo, false) != 0)) {
+		DRM_ERROR("failed to reserve new abo in error path\n");
+		goto cleanup;
+	}
+unpin:
+	if (unlikely(amdgpu_bo_unpin(new_abo) != 0)) {
+		DRM_ERROR("failed to unpin new abo in error path\n");
+	}
+unreserve:
+	amdgpu_bo_unreserve(new_abo);
 
-	amdgpu_crtc_submit_flip(crtc, fb, work, new_abo);
+cleanup:
+	amdgpu_bo_unref(&work->old_abo);
+	dma_fence_put(work->excl);
+	for (i = 0; i < work->shared_count; ++i)
+		dma_fence_put(work->shared[i]);
+	kfree(work->shared);
+	kfree(work);
 
-	return 0;
+	return r;
 }
 
 int amdgpu_crtc_set_config(struct drm_mode_set *set)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 1e77136d6f0c..80f062099087 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -682,21 +682,6 @@ int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_pending_vblank_event *event,
 				 uint32_t page_flip_flags, uint32_t target);
-void amdgpu_crtc_cleanup_flip_ctx(struct amdgpu_flip_work *work,
-				  struct amdgpu_bo *new_abo);
-int amdgpu_crtc_prepare_flip(struct drm_crtc *crtc,
-			     struct drm_framebuffer *fb,
-			     struct drm_pending_vblank_event *event,
-			     uint32_t page_flip_flags,
-			     uint32_t target,
-			     struct amdgpu_flip_work **work,
-			     struct amdgpu_bo **new_abo);
-
-void amdgpu_crtc_submit_flip(struct drm_crtc *crtc,
-			     struct drm_framebuffer *fb,
-			     struct amdgpu_flip_work *work,
-			     struct amdgpu_bo *new_abo);
-
 extern const struct drm_mode_config_funcs amdgpu_mode_funcs;
 
 #endif
-- 
2.9.3