Re: [PATCH v2] drm/amd/display: add FB_DAMAGE_CLIPS support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 11/18/22 16:51, Hamza Mahfooz wrote:

Currently, userspace doesn't have a way to communicate selective updates
to displays. So, enable support for FB_DAMAGE_CLIPS for DCN ASICs newer
than DCN301, convert DRM damage clips to dc dirty rectangles and fill
them into dirty_rects in fill_dc_dirty_rects().

Signed-off-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>


Thanks for the patch, it LGTM.

Reviewed-by: Leo Li <sunpeng.li@xxxxxxx>
It would be good to add an IGT case to cover combinations of MPO & damage clip commits. Perhaps something that covers the usecase of moving a MPO video, while desktop UI updates. We'd expect the SU region to cover both the MPO plane + UI damage clips, or fallback to FFU. 

Thanks,
Leo

---
v2: fallback to FFU if we run into too many dirty rectangles, consider
     dirty rectangles in non MPO case and always add a dirty rectangle
     for the new plane if there are bb changes in the MPO case.
---
  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 130 +++++++++++-------
  .../amd/display/amdgpu_dm/amdgpu_dm_plane.c   |   4 +
  2 files changed, 88 insertions(+), 46 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 4eb8201a2608..7af94a2c6237 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4842,6 +4842,35 @@ static int fill_dc_plane_attributes(struct amdgpu_device *adev,
  	return 0;
  }
+static inline void fill_dc_dirty_rect(struct drm_plane *plane, 
+				      struct rect *dirty_rect, int32_t x,
+				      int32_t y, int32_t width, int32_t height,
+				      int *i, bool ffu)
+{
+	if (*i > DC_MAX_DIRTY_RECTS)
+		return;
+
+	if (*i == DC_MAX_DIRTY_RECTS)
+		goto out;
+
+	dirty_rect->x = x;
+	dirty_rect->y = y;
+	dirty_rect->width = width;
+	dirty_rect->height = height;
+
+	if (ffu)
+		drm_dbg(plane->dev,
+			"[PLANE:%d] PSR FFU dirty rect size (%d, %d)\n",
+			plane->base.id, width, height);
+	else
+		drm_dbg(plane->dev,
+			"[PLANE:%d] PSR SU dirty rect at (%d, %d) size (%d, %d)",
+			plane->base.id, x, y, width, height);
+
+out:
+	(*i)++;
+}
+
  /**
   * fill_dc_dirty_rects() - Fill DC dirty regions for PSR selective updates
   *
@@ -4862,10 +4891,6 @@ static int fill_dc_plane_attributes(struct amdgpu_device *adev,
   * addition, certain use cases - such as cursor and multi-plane overlay (MPO) -
   * implicitly provide damage clips without any client support via the plane
   * bounds.
- *
- * Today, amdgpu_dm only supports the MPO and cursor usecase.
- *
- * TODO: Also enable for FB_DAMAGE_CLIPS
   */
  static void fill_dc_dirty_rects(struct drm_plane *plane,
  				struct drm_plane_state *old_plane_state,
@@ -4876,12 +4901,11 @@ static void fill_dc_dirty_rects(struct drm_plane *plane,
  	struct dm_crtc_state *dm_crtc_state = to_dm_crtc_state(crtc_state);
  	struct rect *dirty_rects = flip_addrs->dirty_rects;
  	uint32_t num_clips;
+	struct drm_mode_rect *clips;
  	bool bb_changed;
  	bool fb_changed;
  	uint32_t i = 0;
- flip_addrs->dirty_rect_count = 0; 
-
  	/*
  	 * Cursor plane has it's own dirty rect update interface. See
  	 * dcn10_dmub_update_cursor_data and dmub_cmd_update_cursor_info_data
@@ -4889,20 +4913,20 @@ static void fill_dc_dirty_rects(struct drm_plane *plane,
  	if (plane->type == DRM_PLANE_TYPE_CURSOR)
  		return;
- /* 
-	 * Today, we only consider MPO use-case for PSR SU. If MPO not
-	 * requested, and there is a plane update, do FFU.
-	 */
+	num_clips = drm_plane_get_damage_clips_count(new_plane_state);
+	clips = drm_plane_get_damage_clips(new_plane_state);
+
  	if (!dm_crtc_state->mpo_requested) {
-		dirty_rects[0].x = 0;
-		dirty_rects[0].y = 0;
-		dirty_rects[0].width = dm_crtc_state->base.mode.crtc_hdisplay;
-		dirty_rects[0].height = dm_crtc_state->base.mode.crtc_vdisplay;
-		flip_addrs->dirty_rect_count = 1;
-		DRM_DEBUG_DRIVER("[PLANE:%d] PSR FFU dirty rect size (%d, %d)\n",
-				 new_plane_state->plane->base.id,
-				 dm_crtc_state->base.mode.crtc_hdisplay,
-				 dm_crtc_state->base.mode.crtc_vdisplay);
+		if (!num_clips || num_clips > DC_MAX_DIRTY_RECTS)
+			goto ffu;
+
+		for (; flip_addrs->dirty_rect_count < num_clips; clips++)
+			fill_dc_dirty_rect(new_plane_state->plane,
+					   &dirty_rects[i], clips->x1,
+					   clips->y1, clips->x2 - clips->x1,
+					   clips->y2 - clips->y1,
+					   &flip_addrs->dirty_rect_count,
+					   false);
  		return;
  	}
@@ -4913,7 +4937,6 @@ static void fill_dc_dirty_rects(struct drm_plane *plane, 
  	 * If plane is moved or resized, also add old bounding box to dirty
  	 * rects.
  	 */
-	num_clips = drm_plane_get_damage_clips_count(new_plane_state);
  	fb_changed = old_plane_state->fb->base.id !=
  		     new_plane_state->fb->base.id;
  	bb_changed = (old_plane_state->crtc_x != new_plane_state->crtc_x ||
@@ -4921,36 +4944,51 @@ static void fill_dc_dirty_rects(struct drm_plane *plane,
  		      old_plane_state->crtc_w != new_plane_state->crtc_w ||
  		      old_plane_state->crtc_h != new_plane_state->crtc_h);
- DRM_DEBUG_DRIVER("[PLANE:%d] PSR bb_changed:%d fb_changed:%d num_clips:%d\n", 
-			 new_plane_state->plane->base.id,
-			 bb_changed, fb_changed, num_clips);
-
-	if (num_clips || fb_changed || bb_changed) {
-		dirty_rects[i].x = new_plane_state->crtc_x;
-		dirty_rects[i].y = new_plane_state->crtc_y;
-		dirty_rects[i].width = new_plane_state->crtc_w;
-		dirty_rects[i].height = new_plane_state->crtc_h;
-		DRM_DEBUG_DRIVER("[PLANE:%d] PSR SU dirty rect at (%d, %d) size (%d, %d)\n",
-				 new_plane_state->plane->base.id,
-				 dirty_rects[i].x, dirty_rects[i].y,
-				 dirty_rects[i].width, dirty_rects[i].height);
-		i += 1;
-	}
+	drm_dbg(plane->dev,
+		"[PLANE:%d] PSR bb_changed:%d fb_changed:%d num_clips:%d\n",
+		new_plane_state->plane->base.id,
+		bb_changed, fb_changed, num_clips);
- /* Add old plane bounding-box if plane is moved or resized */ 
  	if (bb_changed) {
-		dirty_rects[i].x = old_plane_state->crtc_x;
-		dirty_rects[i].y = old_plane_state->crtc_y;
-		dirty_rects[i].width = old_plane_state->crtc_w;
-		dirty_rects[i].height = old_plane_state->crtc_h;
-		DRM_DEBUG_DRIVER("[PLANE:%d] PSR SU dirty rect at (%d, %d) size (%d, %d)\n",
-				old_plane_state->plane->base.id,
-				dirty_rects[i].x, dirty_rects[i].y,
-				dirty_rects[i].width, dirty_rects[i].height);
-		i += 1;
-	}
+		fill_dc_dirty_rect(new_plane_state->plane, &dirty_rects[i],
+				   new_plane_state->crtc_x,
+				   new_plane_state->crtc_y,
+				   new_plane_state->crtc_w,
+				   new_plane_state->crtc_h, &i, false);
+
+		/* Add old plane bounding-box if plane is moved or resized */
+		fill_dc_dirty_rect(new_plane_state->plane, &dirty_rects[i],
+				   old_plane_state->crtc_x,
+				   old_plane_state->crtc_y,
+				   old_plane_state->crtc_w,
+				   old_plane_state->crtc_h, &i, false);
+	}
+
+	if (num_clips) {
+		for (; i < num_clips; clips++)
+			fill_dc_dirty_rect(new_plane_state->plane,
+					   &dirty_rects[i], clips->x1,
+					   clips->y1, clips->x2 - clips->x1,
+					   clips->y2 - clips->y1, &i, false);
+	} else if (fb_changed && !bb_changed) {
+		fill_dc_dirty_rect(new_plane_state->plane, &dirty_rects[i],
+				   new_plane_state->crtc_x,
+				   new_plane_state->crtc_y,
+				   new_plane_state->crtc_w,
+				   new_plane_state->crtc_h, &i, false);
+	}
+
+	if (i > DC_MAX_DIRTY_RECTS)
+		goto ffu;
flip_addrs->dirty_rect_count = i; 
+	return;
+
+ffu:
+	fill_dc_dirty_rect(new_plane_state->plane, &dirty_rects[0], 0, 0,
+			   dm_crtc_state->base.mode.crtc_hdisplay,
+			   dm_crtc_state->base.mode.crtc_vdisplay,
+			   &flip_addrs->dirty_rect_count, true);
  }
static void update_stream_scaling_settings(const struct drm_display_mode *mode, 
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index e6854f7270a6..3c50b3ff7954 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
@@ -1600,6 +1600,10 @@ int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
  		drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
  						   supported_rotations);
+ if (dm->adev->ip_versions[DCE_HWIP][0] > IP_VERSION(3, 0, 1) && 
+	    plane->type != DRM_PLANE_TYPE_CURSOR)
+		drm_plane_enable_fb_damage_clips(plane);
+
  	drm_plane_helper_add(plane, &dm_plane_helper_funcs);
#ifdef CONFIG_DRM_AMD_DC_HDR
[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux