drm/msm/dpu: call dpu_rm_get_intf() from dpu_encoder_get_intf()

There is little sense to get intf index just to call dpu_rm_get_intf()
on it. Move dpu_rm_get_intf() call to dpu_encoder_get_intf() function.
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Abhinav Kumar <quic_abhinavk@quicinc.com> # sc7280
Patchwork: https://patchwork.freedesktop.org/patch/540632/
Link: https://lore.kernel.org/r/20230601172236.564445-6-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c

@@ -1270,22 +1270,23 @@ static void dpu_encoder_virt_atomic_disable(struct drm_encoder *drm_enc,
 	mutex_unlock(&dpu_enc->enc_lock);
 }
 
-static enum dpu_intf dpu_encoder_get_intf(const struct dpu_mdss_cfg *catalog,
+static struct dpu_hw_intf *dpu_encoder_get_intf(const struct dpu_mdss_cfg *catalog,
+		struct dpu_rm *dpu_rm,
 		enum dpu_intf_type type, u32 controller_id)
 {
 	int i = 0;
 
 	if (type == INTF_WB)
-		return INTF_MAX;
+		return NULL;
 
 	for (i = 0; i < catalog->intf_count; i++) {
 		if (catalog->intf[i].type == type
 		    && catalog->intf[i].controller_id == controller_id) {
-			return catalog->intf[i].id;
+			return dpu_rm_get_intf(dpu_rm, catalog->intf[i].id);
 		}
 	}
 
-	return INTF_MAX;
+	return NULL;
 }
 
 void dpu_encoder_vblank_callback(struct drm_encoder *drm_enc,
@@ -2307,7 +2308,6 @@ static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc,
 		 * h_tile_instance_ids[2] = {1, 0}; DSI1 = left, DSI0 = right
 		 */
 		u32 controller_id = disp_info->h_tile_instance[i];
-		enum dpu_intf intf_idx;
 
 		if (disp_info->num_of_h_tiles > 1) {
 			if (i == 0)
@@ -2321,12 +2321,9 @@ static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc,
 		DPU_DEBUG("h_tile_instance %d = %d, split_role %d\n",
 				i, controller_id, phys_params.split_role);
 
-		intf_idx = dpu_encoder_get_intf(dpu_kms->catalog,
-							    disp_info->intf_type,
-							    controller_id);
-
-		if (intf_idx >= INTF_0 && intf_idx < INTF_MAX)
-			phys_params.hw_intf = dpu_rm_get_intf(&dpu_kms->rm, intf_idx);
+		phys_params.hw_intf = dpu_encoder_get_intf(dpu_kms->catalog, &dpu_kms->rm,
+							   disp_info->intf_type,
+							   controller_id);
 
 		if (disp_info->intf_type == INTF_WB && controller_id < WB_MAX)
 			phys_params.hw_wb = dpu_rm_get_wb(&dpu_kms->rm, controller_id);
@@ -2350,7 +2347,6 @@ static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc,
 			DPU_ERROR_ENC(dpu_enc, "failed to add phys encs\n");
 			break;
 		}
-
 	}
 
 	mutex_unlock(&dpu_enc->enc_lock);