[Intel-gfx] [PATCH 1/4] drm/i915: Track logically enabled planes for hw state

[Ville Syrjala]

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

Currently crtc_state->uapi.plane_mask only tracks logically
enabled planes on the uapi level. For bigjoiner purposes
we want to do the same for the hw state. Let's follow the
pattern established by active_planes & co. here.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_atomic_plane.c  |  3 +++
 drivers/gpu/drm/i915/display/intel_display.c       | 13 +++++++++----
 drivers/gpu/drm/i915/display/intel_display_types.h |  5 ++++-
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index 7e9f84b00859..b5e1ee99535c 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -312,10 +312,13 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_
 	int ret;
 
 	intel_plane_set_invisible(new_crtc_state, new_plane_state);
+	new_crtc_state->enabled_planes &= ~BIT(plane->id);
 
 	if (!new_plane_state->hw.crtc && !old_plane_state->hw.crtc)
 		return 0;
 
+	new_crtc_state->enabled_planes |= BIT(plane->id);
+
 	ret = plane->check_plane(new_crtc_state, new_plane_state);
 	if (ret)
 		return ret;
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 595183f7b60f..068892e4d2f0 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3551,7 +3551,7 @@ intel_set_plane_visible(struct intel_crtc_state *crtc_state,
 		crtc_state->uapi.plane_mask &= ~drm_plane_mask(&plane->base);
 }
 
-static void fixup_active_planes(struct intel_crtc_state *crtc_state)
+static void fixup_plane_bitmasks(struct intel_crtc_state *crtc_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
 	struct drm_plane *plane;
@@ -3561,11 +3561,14 @@ static void fixup_active_planes(struct intel_crtc_state *crtc_state)
 	 * have been used on the same (or wrong) pipe. plane_mask uses
 	 * unique ids, hence we can use that to reconstruct active_planes.
 	 */
+	crtc_state->enabled_planes = 0;
 	crtc_state->active_planes = 0;
 
 	drm_for_each_plane_mask(plane, &dev_priv->drm,
-				crtc_state->uapi.plane_mask)
+				crtc_state->uapi.plane_mask) {
+		crtc_state->enabled_planes |= BIT(to_intel_plane(plane)->id);
 		crtc_state->active_planes |= BIT(to_intel_plane(plane)->id);
+	}
 }
 
 static void intel_plane_disable_noatomic(struct intel_crtc *crtc,
@@ -3583,7 +3586,7 @@ static void intel_plane_disable_noatomic(struct intel_crtc *crtc,
 		    crtc->base.base.id, crtc->base.name);
 
 	intel_set_plane_visible(crtc_state, plane_state, false);
-	fixup_active_planes(crtc_state);
+	fixup_plane_bitmasks(crtc_state);
 	crtc_state->data_rate[plane->id] = 0;
 	crtc_state->min_cdclk[plane->id] = 0;
 
@@ -12842,6 +12845,7 @@ static int icl_check_nv12_planes(struct intel_crtc_state *crtc_state)
 
 		plane_state->planar_linked_plane = NULL;
 		if (plane_state->planar_slave && !plane_state->uapi.visible) {
+			crtc_state->enabled_planes &= ~BIT(plane->id);
 			crtc_state->active_planes &= ~BIT(plane->id);
 			crtc_state->update_planes |= BIT(plane->id);
 		}
@@ -12885,6 +12889,7 @@ static int icl_check_nv12_planes(struct intel_crtc_state *crtc_state)
 
 		linked_state->planar_slave = true;
 		linked_state->planar_linked_plane = plane;
+		crtc_state->enabled_planes |= BIT(linked->id);
 		crtc_state->active_planes |= BIT(linked->id);
 		crtc_state->update_planes |= BIT(linked->id);
 		drm_dbg_kms(&dev_priv->drm, "Using %s as Y plane for %s\n",
@@ -19165,7 +19170,7 @@ static void readout_plane_state(struct drm_i915_private *dev_priv)
 		struct intel_crtc_state *crtc_state =
 			to_intel_crtc_state(crtc->base.state);
 
-		fixup_active_planes(crtc_state);
+		fixup_plane_bitmasks(crtc_state);
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index ce82d654d0f2..c93cf3ddebb6 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1047,7 +1047,10 @@ struct intel_crtc_state {
 		u32 cgm_mode;
 	};
 
-	/* bitmask of visible planes (enum plane_id) */
+	/* bitmask of logically enabled planes (enum plane_id) */
+	u8 enabled_planes;
+
+	/* bitmask of actually visible planes (enum plane_id) */
 	u8 active_planes;
 	u8 nv12_planes;
 	u8 c8_planes;
-- 
2.26.2