disp: msm: sde: fix compression info usage in resource alloc

Currently, compression info passed to resource manager is not
valid in atomic check phase. Also in current design allocation
of msm mode info object is from stack which is huge and causing
stack overflow in continuous splash use case. This change fixes
these issues by moving mode info object to heap allocation.

Change-Id: Ifaf39b3ae59c942da5c00b82c73cb97cdaf500d3
Signed-off-by: Prabhanjan Kandula <pkandula@codeaurora.org>

msm/sde/sde_encoder.c

@@ -510,22 +510,22 @@ void sde_encoder_get_hw_resources(struct drm_encoder *drm_enc,
 		struct drm_connector_state *conn_state)
 {
 	struct sde_encoder_virt *sde_enc = NULL;
-	struct msm_mode_info mode_info;
-	int i = 0;
+	int ret, i = 0;
 
-	if (!hw_res || !drm_enc || !conn_state) {
-		SDE_ERROR("invalid argument(s), drm_enc %d, res %d, state %d\n",
-				!drm_enc, !hw_res, !conn_state);
+	if (!hw_res || !drm_enc || !conn_state || !hw_res->comp_info) {
+		SDE_ERROR("rc %d, drm_enc %d, res %d, state %d, comp-info %d\n",
+				-EINVAL, !drm_enc, !hw_res, !conn_state,
+				hw_res ? !hw_res->comp_info : 0);
 		return;
 	}
 
 	sde_enc = to_sde_encoder_virt(drm_enc);
 	SDE_DEBUG_ENC(sde_enc, "\n");
 
-	/* Query resources used by phys encs, expected to be without overlap */
-	memset(hw_res, 0, sizeof(*hw_res));
 	hw_res->display_num_of_h_tiles = sde_enc->display_num_of_h_tiles;
+	hw_res->display_type = sde_enc->disp_info.display_type;
 
+	/* Query resources used by phys encs, expected to be without overlap */
 	for (i = 0; i < sde_enc->num_phys_encs; i++) {
 		struct sde_encoder_phys *phys = sde_enc->phys_encs[i];
 
@@ -538,10 +538,14 @@ void sde_encoder_get_hw_resources(struct drm_encoder *drm_enc,
 	 * called from atomic_check phase. Use the below API to get mode
 	 * information of the temporary conn_state passed
 	 */
-	sde_connector_state_get_mode_info(conn_state, &mode_info);
-	hw_res->topology = mode_info.topology;
-	hw_res->comp_info = &sde_enc->mode_info.comp_info;
-	hw_res->display_type = sde_enc->disp_info.display_type;
+	ret = sde_connector_state_get_topology(conn_state, &hw_res->topology);
+	if (ret)
+		SDE_ERROR("failed to get topology ret %d\n", ret);
+
+	ret = sde_connector_state_get_compression_info(conn_state,
+			hw_res->comp_info);
+	if (ret)
+		SDE_ERROR("failed to get compression info ret %d\n", ret);
 }
 
 void sde_encoder_destroy(struct drm_encoder *drm_enc)