disp: msm: sde: add snapshot of SDE from 4.14 to 4.19

This change takes a snapshot from 4.14 to 4.19 as of
commit 47d149c31967 ("drm/msm/sde: Add null pointer
sanity checks").

Change-Id: Ib40428c562c3561c8a20d9849f16d13151496005
Signed-off-by: Samantha Tran <samtran@codeaurora.org>

msm/sde/sde_crtc.c

@@ -4644,8 +4644,10 @@ static int sde_crtc_atomic_check(struct drm_crtc *crtc,
 	struct sde_crtc *sde_crtc;
 	struct plane_state *pstates = NULL;
 	struct sde_crtc_state *cstate;
+	const struct drm_plane_state *pstate;
+	struct drm_plane *plane;
 	struct drm_display_mode *mode;
-	int rc = 0;
+	int mixer_height, mixer_width, rc = 0;
 	struct sde_multirect_plane_states *multirect_plane = NULL;
 	struct drm_connector *conn;
 	struct drm_connector_list_iter conn_iter;
@@ -4702,6 +4704,26 @@ static int sde_crtc_atomic_check(struct drm_crtc *crtc,
 		}
 	drm_connector_list_iter_end(&conn_iter);
 
+	mixer_width = sde_crtc_get_mixer_width(sde_crtc, cstate, mode);
+	mixer_height = sde_crtc_get_mixer_height(sde_crtc, cstate, mode);
+
+	if (cstate->num_ds_enabled) {
+		if (!state->state)
+			goto end;
+
+		drm_atomic_crtc_state_for_each_plane_state(plane,
+							pstate, state) {
+			if ((pstate->crtc_h > mixer_height) ||
+					(pstate->crtc_w > mixer_width)) {
+				SDE_ERROR("plane w/h:%x*%x > mixer w/h:%x*%x\n",
+					pstate->crtc_w, pstate->crtc_h,
+					mixer_width, mixer_height);
+				return -E2BIG;
+				goto end;
+			}
+		}
+	}
+
 	_sde_crtc_setup_is_ppsplit(state);
 	_sde_crtc_setup_lm_bounds(crtc, state);