[PATCH 2/3] drm/atomic-helper: Remove the timestamping constant update from drm_atomic_helper_update_legacy_modeset_state()

[Ville Syrjala]

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

The timestamping constants have nothing to do with any legacy state
so should not be updated from
drm_atomic_helper_update_legacy_modeset_state().

Let's make everyone call drm_atomic_helper_calc_timestamping_constants()
directly instead of relying on
drm_atomic_helper_update_legacy_modeset_state() to call it.

@@
expression S;
@@
- drm_atomic_helper_calc_timestamping_constants(S);

@@
expression D, S;
@@
  drm_atomic_helper_update_legacy_modeset_state(D, S);
+ drm_atomic_helper_calc_timestamping_constants(S);

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 +
 drivers/gpu/drm/drm_atomic_helper.c               | 7 ++-----
 drivers/gpu/drm/i915/display/intel_display.c      | 1 +
 drivers/gpu/drm/nouveau/dispnv50/disp.c           | 1 +
 4 files changed, 5 insertions(+), 5 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 490684787cff..0511097343da 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7397,6 +7397,7 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
 	int crtc_disable_count = 0;
 
 	drm_atomic_helper_update_legacy_modeset_state(dev, state);
+	drm_atomic_helper_calc_timestamping_constants(state);
 
 	dm_state = dm_atomic_get_new_state(state);
 	if (dm_state && dm_state->context) {
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 673e3fc282d9..45ee613c8efd 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1115,9 +1115,7 @@ disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state)
  * @old_state: atomic state object with old state structures
  *
  * This function updates all the various legacy modeset state pointers in
- * connectors, encoders and CRTCs. It also updates the timestamping constants
- * used for precise vblank timestamps by calling
- * drm_calc_timestamping_constants().
+ * connectors, encoders and CRTCs.
  *
  * Drivers can use this for building their own atomic commit if they don't have
  * a pure helper-based modeset implementation.
@@ -1187,8 +1185,6 @@ drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev,
 			crtc->y = new_plane_state->src_y >> 16;
 		}
 	}
-
-	drm_atomic_helper_calc_timestamping_constants(old_state);
 }
 EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state);
 
@@ -1296,6 +1292,7 @@ void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev,
 	disable_outputs(dev, old_state);
 
 	drm_atomic_helper_update_legacy_modeset_state(dev, old_state);
+	drm_atomic_helper_calc_timestamping_constants(old_state);
 
 	crtc_set_mode(dev, old_state);
 }
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index ec148a8da2c2..035840ce3825 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -15578,6 +15578,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 
 	if (state->modeset) {
 		drm_atomic_helper_update_legacy_modeset_state(dev, &state->base);
+		drm_atomic_helper_calc_timestamping_constants(&state->base);
 
 		intel_set_cdclk_pre_plane_update(state);
 
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 7799530e07c1..b6d1b926bc5e 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -2069,6 +2069,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state)
 	drm_atomic_helper_wait_for_fences(dev, state, false);
 	drm_atomic_helper_wait_for_dependencies(state);
 	drm_atomic_helper_update_legacy_modeset_state(dev, state);
+	drm_atomic_helper_calc_timestamping_constants(state);
 
 	if (atom->lock_core)
 		mutex_lock(&disp->mutex);
-- 
2.26.2