[PATCH 6/9] drm/i915/scaler: Carve up intel_atomic_setup_scalers()

[Ville Syrjala]

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

Declutter intel_atomic_setup_scalers() a bit by splitting
the crtc scaling/pfit vs. plane scaling cases into their
own functions.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/skl_scaler.c | 92 ++++++++++++++---------
 1 file changed, 56 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
index 437fc19972c6..e29e29c4cbc3 100644
--- a/drivers/gpu/drm/i915/display/skl_scaler.c
+++ b/drivers/gpu/drm/i915/display/skl_scaler.c
@@ -425,6 +425,55 @@ static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_stat
 	return 0;
 }
 
+static int setup_crtc_scaler(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc)
+{
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_crtc_scaler_state *scaler_state =
+		&crtc_state->scaler_state;
+
+	return intel_atomic_setup_scaler(scaler_state,
+					 hweight32(scaler_state->scaler_users),
+					 crtc, "CRTC", crtc->base.base.id,
+					 NULL, &scaler_state->scaler_id);
+}
+
+static int setup_plane_scaler(struct intel_atomic_state *state,
+			      struct intel_crtc *crtc,
+			      struct intel_plane *plane)
+{
+	struct intel_display *display = to_intel_display(state);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_crtc_scaler_state *scaler_state =
+		&crtc_state->scaler_state;
+	struct intel_plane_state *plane_state;
+
+	/* plane on different crtc cannot be a scaler user of this crtc */
+	if (drm_WARN_ON(display->drm, plane->pipe != crtc->pipe))
+		return 0;
+
+	plane_state = intel_atomic_get_new_plane_state(state, plane);
+
+	/*
+	 * GLK+ scalers don't have a HQ mode so it
+	 * isn't necessary to change between HQ and dyn mode
+	 * on those platforms.
+	 */
+	if (!plane_state && DISPLAY_VER(display) >= 10)
+		return 0;
+
+	plane_state = intel_atomic_get_plane_state(state, plane);
+	if (IS_ERR(plane_state))
+		return PTR_ERR(plane_state);
+
+	return intel_atomic_setup_scaler(scaler_state,
+					 hweight32(scaler_state->scaler_users),
+					 crtc, "PLANE", plane->base.base.id,
+					 plane_state, &plane_state->scaler_id);
+}
+
 /**
  * intel_atomic_setup_scalers() - setup scalers for crtc per staged requests
  * @state: atomic state
@@ -476,53 +525,24 @@ int intel_atomic_setup_scalers(struct intel_atomic_state *state,
 
 	/* walkthrough scaler_users bits and start assigning scalers */
 	for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) {
-		struct intel_plane_state *plane_state = NULL;
-		int *scaler_id;
-		const char *name;
-		int idx, ret;
+		int ret;
 
 		/* skip if scaler not required */
 		if (!(scaler_state->scaler_users & (1 << i)))
 			continue;
 
 		if (i == SKL_CRTC_INDEX) {
-			name = "CRTC";
-			idx = crtc->base.base.id;
-
-			/* panel fitter case: assign as a crtc scaler */
-			scaler_id = &scaler_state->scaler_id;
+			ret = setup_crtc_scaler(state, crtc);
+			if (ret)
+				return ret;
 		} else {
 			struct intel_plane *plane =
 				to_intel_plane(drm_plane_from_index(display->drm, i));
 
-			/* plane on different crtc cannot be a scaler user of this crtc */
-			if (drm_WARN_ON(display->drm, plane->pipe != crtc->pipe))
-				continue;
-
-			plane_state = intel_atomic_get_new_plane_state(state, plane);
-
-			/*
-			 * GLK+ scalers don't have a HQ mode so it
-			 * isn't necessary to change between HQ and dyn mode
-			 * on those platforms.
-			 */
-			if (!plane_state && DISPLAY_VER(display) >= 10)
-				continue;
-
-			plane_state = intel_atomic_get_plane_state(state, plane);
-			if (IS_ERR(plane_state))
-				return PTR_ERR(plane_state);
-
-			name = "PLANE";
-			idx = plane->base.base.id;
-			scaler_id = &plane_state->scaler_id;
+			ret = setup_plane_scaler(state, crtc, plane);
+			if (ret)
+				return ret;
 		}
-
-		ret = intel_atomic_setup_scaler(scaler_state, num_scalers_need,
-						crtc, name, idx,
-						plane_state, scaler_id);
-		if (ret < 0)
-			return ret;
 	}
 
 	return 0;
-- 
2.45.2