diff mbox series

drm/i915: Start using plane scale factor for relative data rate

Message ID 20230714123456.19153-1-stanislav.lisovskiy@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915: Start using plane scale factor for relative data rate | expand

Commit Message

Stanislav Lisovskiy July 14, 2023, 12:34 p.m. UTC 
BSpec 68907 clearly instructs us to use plane scale factor when calculating
relative data rate to be used when allocating DDB blocks for each plane.
For some reason we use scale factor for data_rate calculation, which is
used for BW calculations, however we are not using it for DDB calculations.

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
---
 drivers/gpu/drm/i915/display/intel_atomic_plane.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index 7d9578ebae556..60a492e186ab8 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -212,6 +212,7 @@  intel_plane_relative_data_rate(const struct intel_crtc_state *crtc_state,
 	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
 	const struct drm_framebuffer *fb = plane_state->hw.fb;
 	int width, height;
+	unsigned int rel_data_rate;
 
 	if (plane->id == PLANE_CURSOR)
 		return 0;
@@ -241,7 +242,11 @@  intel_plane_relative_data_rate(const struct intel_crtc_state *crtc_state,
 		height /= 2;
 	}
 
-	return width * height * fb->format->cpp[color_plane];
+	rel_data_rate = width * height * fb->format->cpp[color_plane];
+
+	return intel_adjusted_rate(&plane_state->uapi.src,
+				   &plane_state->uapi.dst,
+				   rel_data_rate);
 }
 
 int intel_plane_calc_min_cdclk(struct intel_atomic_state *state,