[PATCH v11 1/2] drm/i915/vrr: Split vrr-compute-config in two phases

[Animesh Manna]

As vrr guardband calculation is dependent on modified
vblank start so better to compute late after all
vblank adjustement.

v1: Initial version.
v2: Split in a separate patch from panel-replay workaround. [Ankit]
v3: Add a function for late vrr related computation. [Ville]

Signed-off-by: Animesh Manna <animesh.manna at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c |  2 ++
 drivers/gpu/drm/i915/display/intel_vrr.c     | 30 +++++++++++++-------
 drivers/gpu/drm/i915/display/intel_vrr.h     |  1 +
 3 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index fdf244a32b24..111e61eceafc 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4802,6 +4802,8 @@ intel_modeset_pipe_config_late(struct intel_atomic_state *state,
 	struct drm_connector *connector;
 	int i;
 
+	intel_vrr_compute_config_late(crtc_state);
+
 	for_each_new_connector_in_state(&state->base, connector,
 					conn_state, i) {
 		struct intel_encoder *encoder =
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 9a51f5bac307..2de1c04bf1a5 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -239,18 +239,26 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
 			(crtc_state->hw.adjusted_mode.crtc_vtotal -
 			 crtc_state->hw.adjusted_mode.vsync_end);
 	}
+}
 
-	/*
-	 * For XE_LPD+, we use guardband and pipeline override
-	 * is deprecated.
-	 */
-	if (DISPLAY_VER(display) >= 13) {
-		crtc_state->vrr.guardband =
-			crtc_state->vrr.vmin + 1 - adjusted_mode->crtc_vblank_start;
-	} else {
-		crtc_state->vrr.pipeline_full =
-			min(255, crtc_state->vrr.vmin - adjusted_mode->crtc_vblank_start -
-			    crtc_state->framestart_delay - 1);
+void intel_vrr_compute_config_late(struct intel_crtc_state *crtc_state)
+{
+	struct intel_display *display = to_intel_display(crtc_state);
+	struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+
+	if (crtc_state->vrr.enable) {
+		/*
+		 * For XE_LPD+, we use guardband and pipeline override
+		 * is deprecated.
+		 */
+		if (DISPLAY_VER(display) >= 13) {
+			crtc_state->vrr.guardband =
+				crtc_state->vrr.vmin + 1 - adjusted_mode->crtc_vblank_start;
+		} else {
+			crtc_state->vrr.pipeline_full =
+				min(255, crtc_state->vrr.vmin - adjusted_mode->crtc_vblank_start -
+				crtc_state->framestart_delay - 1);
+		}
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
index 89937858200d..3127c94e9778 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -18,6 +18,7 @@ bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh);
 void intel_vrr_check_modeset(struct intel_atomic_state *state);
 void intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
 			      struct drm_connector_state *conn_state);
+void intel_vrr_compute_config_late(struct intel_crtc_state *crtc_state);
 void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state);
 void intel_vrr_enable(const struct intel_crtc_state *crtc_state);
 void intel_vrr_send_push(const struct intel_crtc_state *crtc_state);
-- 
2.29.0