From patchwork Wed Nov 7 06:15:03 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: archit taneja X-Patchwork-Id: 1708081 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 6708EDFB7A for ; Wed, 7 Nov 2012 06:15:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751346Ab2KGGPe (ORCPT ); Wed, 7 Nov 2012 01:15:34 -0500 Received: from devils.ext.ti.com ([198.47.26.153]:41454 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751031Ab2KGGPe (ORCPT ); Wed, 7 Nov 2012 01:15:34 -0500 Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id qA76FXjs006956; Wed, 7 Nov 2012 00:15:33 -0600 Received: from DLEE74.ent.ti.com (dlee74.ent.ti.com [157.170.170.8]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id qA76FXU3005616; Wed, 7 Nov 2012 00:15:33 -0600 Received: from dlelxv23.itg.ti.com (172.17.1.198) by DLEE74.ent.ti.com (157.170.170.8) with Microsoft SMTP Server id 14.1.323.3; Wed, 7 Nov 2012 00:15:33 -0600 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlelxv23.itg.ti.com (8.13.8/8.13.8) with ESMTP id qA76FX1a022225; Wed, 7 Nov 2012 00:15:33 -0600 Received: from localhost (a0393947pc.apr.dhcp.ti.com [172.24.136.151]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id qA76FVw12438; Wed, 7 Nov 2012 00:15:31 -0600 (CST) From: Archit Taneja To: CC: , , Archit Taneja Subject: [PATCH 2/3] OMAPDSS: DISPC: Don't allow predecimation for writeback Date: Wed, 7 Nov 2012 11:45:03 +0530 Message-ID: <1352268905-31093-3-git-send-email-archit@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1352268905-31093-1-git-send-email-archit@ti.com> References: <1352268905-31093-1-git-send-email-archit@ti.com> MIME-Version: 1.0 Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Since writeback writes to a buffer instead of reading from one, predecimation doesn't make sense for it. Configure the width and height predecimation limits to 1 if the plane is writeback. Signed-off-by: Archit Taneja --- drivers/video/omap2/dss/dispc.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index f19cd37..664ac6f 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -2315,9 +2315,14 @@ static int dispc_ovl_calc_scaling(enum omap_plane plane, if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0) return -EINVAL; - *x_predecim = max_decim_limit; - *y_predecim = (rotation_type == OMAP_DSS_ROT_TILER && - dss_has_feature(FEAT_BURST_2D)) ? 2 : max_decim_limit; + if (plane == OMAP_DSS_WB) { + *x_predecim = *y_predecim = 1; + } else { + *x_predecim = max_decim_limit; + *y_predecim = (rotation_type == OMAP_DSS_ROT_TILER && + dss_has_feature(FEAT_BURST_2D)) ? + 2 : max_decim_limit; + } if (color_mode == OMAP_DSS_COLOR_CLUT1 || color_mode == OMAP_DSS_COLOR_CLUT2 ||