[PATCH 04/18] drm/i915: Introduce intel_vrr_{vmin,vmax}_vtotal()

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

On ICL/TGL vmin/vmax/flipline won't actually match the
vtotal valeues (currently they do, but that is wrong and
needs to be fixed). Add a few helpers that will compute the
actual vtotal values for us.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_dsb.c    |  2 +-
 drivers/gpu/drm/i915/display/intel_vblank.c |  4 ++--
 drivers/gpu/drm/i915/display/intel_vrr.c    | 11 +++++++++++
 drivers/gpu/drm/i915/display/intel_vrr.h    |  2 ++
 4 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c
index e6f8fc743fb4..fcb8bf9cb313 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.c
+++ b/drivers/gpu/drm/i915/display/intel_dsb.c
@@ -140,7 +140,7 @@ static int dsb_vtotal(struct intel_atomic_state *state,
 	const struct intel_crtc_state *crtc_state = pre_commit_crtc_state(state, crtc);
 
 	if (pre_commit_is_vrr_active(state, crtc))
-		return crtc_state->vrr.vmax;
+		return intel_vrr_vmax_vtotal(crtc_state);
 	else
 		return intel_mode_vtotal(&crtc_state->hw.adjusted_mode);
 }
diff --git a/drivers/gpu/drm/i915/display/intel_vblank.c b/drivers/gpu/drm/i915/display/intel_vblank.c
index a95fb3349eba..6f0e0c64187d 100644
--- a/drivers/gpu/drm/i915/display/intel_vblank.c
+++ b/drivers/gpu/drm/i915/display/intel_vblank.c
@@ -523,8 +523,8 @@ void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state,
 		drm_WARN_ON(display->drm,
 			    (mode_flags & I915_MODE_FLAG_VRR) == 0);
 
-		adjusted_mode.crtc_vtotal = crtc_state->vrr.vmax;
-		adjusted_mode.crtc_vblank_end = crtc_state->vrr.vmax;
+		adjusted_mode.crtc_vtotal = intel_vrr_vmax_vtotal(crtc_state);
+		adjusted_mode.crtc_vblank_end = intel_vrr_vmax_vtotal(crtc_state);
 		adjusted_mode.crtc_vblank_start = intel_vrr_vmin_vblank_start(crtc_state);
 		vmax_vblank_start = intel_vrr_vmax_vblank_start(crtc_state);
 	} else {
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 1b0a8e001141..0d40402fe043 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -103,6 +103,17 @@ static int intel_vrr_vblank_exit_length(const struct intel_crtc_state *crtc_stat
 		return crtc_state->vrr.pipeline_full + crtc_state->framestart_delay + 1;
 }
 
+int intel_vrr_vmin_vtotal(const struct intel_crtc_state *crtc_state)
+{
+	/* Min vblank actually determined by flipline that is always >=vmin+1 */
+	return crtc_state->vrr.vmin + 1;
+}
+
+int intel_vrr_vmax_vtotal(const struct intel_crtc_state *crtc_state)
+{
+	return crtc_state->vrr.vmax;
+}
+
 int intel_vrr_vmin_vblank_start(const struct intel_crtc_state *crtc_state)
 {
 	/* Min vblank actually determined by flipline that is always >=vmin+1 */
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
index b3b45c675020..75db88ae9cc4 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -26,6 +26,8 @@ void intel_vrr_send_push(const struct intel_crtc_state *crtc_state);
 bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state);
 void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state);
 void intel_vrr_get_config(struct intel_crtc_state *crtc_state);
+int intel_vrr_vmax_vtotal(const struct intel_crtc_state *crtc_state);
+int intel_vrr_vmin_vtotal(const struct intel_crtc_state *crtc_state);
 int intel_vrr_vmax_vblank_start(const struct intel_crtc_state *crtc_state);
 int intel_vrr_vmin_vblank_start(const struct intel_crtc_state *crtc_state);
 
-- 
2.45.2