From patchwork Sat Jan 11 12:42:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivaylo Dimitrov X-Patchwork-Id: 3469051 Return-Path: X-Original-To: patchwork-linux-fbdev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 873089F2E9 for ; Sat, 11 Jan 2014 12:43:25 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9AAEC2015B for ; Sat, 11 Jan 2014 12:43:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 74F392010E for ; Sat, 11 Jan 2014 12:43:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752664AbaAKMmw (ORCPT ); Sat, 11 Jan 2014 07:42:52 -0500 Received: from mail-ea0-f175.google.com ([209.85.215.175]:45701 "EHLO mail-ea0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751572AbaAKMmv (ORCPT ); Sat, 11 Jan 2014 07:42:51 -0500 Received: by mail-ea0-f175.google.com with SMTP id z10so2479653ead.20 for ; Sat, 11 Jan 2014 04:42:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id; bh=g/9fEVMgYlrW0eaJjOqM5Bj0mGMjIwClu+xlgAMpyrk=; b=JkMdkdgi2x3GNR9n/y35mdEPWIkMk6cImkbZ13w6DQ/sNONdocWE7iC2dZaighVYzD pTtylXL/dIU9x8WXcPnHjlCBOpHAL4hJOU+v2VdqPZkFkS+LScGKBEn8Pt2GCe9Ose5z dDeQNaYF8dc8s+F+3NbIwbbr0/E9vweMEZByZuUy1LBrwHT0zSqMxKQF6VeglqtpmUNE mrWaL56Wfnb4/aiZ6r1nh4buRgHqrlxGGoh+5EFCWYuc1iaqtmDfzEZHXe1xs4GMGNRd RVH9pbq7CpV0WxV7KDhbWqV5RPNCNEqqN0ky+f8TgKI/hnCoaI00WUjdytM1cQ0aW6DP bQ5A== X-Received: by 10.14.95.194 with SMTP id p42mr132447eef.115.1389444166773; Sat, 11 Jan 2014 04:42:46 -0800 (PST) Received: from localhost ([46.249.74.23]) by mx.google.com with ESMTPSA id l4sm22548917een.13.2014.01.11.04.42.44 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Sat, 11 Jan 2014 04:42:45 -0800 (PST) From: Ivaylo Dimitrov To: tomi.valkeinen@ti.com Cc: plagnioj@jcrosoft.com, pali.rohar@gmail.com, pavel@ucw.cz, linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, Ivaylo Dimitrov , Ivaylo Dimitrov Subject: [PATCH] OMAPDSS: DISPC: Fix 34xx overlay scaling calculation Date: Sat, 11 Jan 2014 14:42:05 +0200 Message-Id: <1389444125-5000-1-git-send-email-ivo.g.dimitrov.75@gmail.com> X-Mailer: git-send-email 1.8.4.msysgit.0 Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ivaylo Dimitrov commit 7faa92339bbb1e6b9a80983b206642517327eb75 OMAPDSS: DISPC: Handle synclost errors in OMAP3 introduces limits check to prevent SYNCLOST errors on OMAP3. However, it misses the logic found in Nokia kernels that is needed to correctly calculate whether 3 tap or 5 tap rescaler to be used as well as the logic to fallback to 3 taps if 5 taps clock results in too tight horizontal timings. Without that patch "horizontal timing too tight" errors are seen when a video with resolution above 640x350 is tried to be played. The patch is a forward-ported logic found in Nokia N900 and N9/50 kernels. Signed-off-by: Ivaylo Dimitrov --- drivers/video/omap2/dss/dispc.c | 36 +++++++++++++++++++++++++----------- 1 files changed, 25 insertions(+), 11 deletions(-) diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index 67e413e..9d1aa25 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -1999,7 +1999,8 @@ static void calc_tiler_rotation_offset(u16 screen_width, u16 width, */ static int check_horiz_timing_omap3(unsigned long pclk, unsigned long lclk, const struct omap_video_timings *t, u16 pos_x, - u16 width, u16 height, u16 out_width, u16 out_height) + u16 width, u16 height, u16 out_width, u16 out_height, + bool five_taps) { const int ds = DIV_ROUND_UP(height, out_height); unsigned long nonactive; @@ -2019,6 +2020,10 @@ static int check_horiz_timing_omap3(unsigned long pclk, unsigned long lclk, if (blank <= limits[i]) return -EINVAL; + /* FIXME add checks for 3-tap filter once the limitations are known */ + if (!five_taps) + return 0; + /* * Pixel data should be prepared before visible display point starts. * So, atleast DS-2 lines must have already been fetched by DISPC @@ -2191,24 +2196,33 @@ static int dispc_ovl_calc_scaling_34xx(unsigned long pclk, unsigned long lclk, const int maxsinglelinewidth = dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH); + *five_taps = height > out_height; + do { in_height = DIV_ROUND_UP(height, *decim_y); in_width = DIV_ROUND_UP(width, *decim_x); - *core_clk = calc_core_clk_five_taps(pclk, mgr_timings, - in_width, in_height, out_width, out_height, color_mode); - - error = check_horiz_timing_omap3(pclk, lclk, mgr_timings, - pos_x, in_width, in_height, out_width, - out_height); if (in_width > maxsinglelinewidth) if (in_height > out_height && in_height < out_height * 2) *five_taps = false; - if (!*five_taps) +again: + if (*five_taps) + *core_clk = calc_core_clk_five_taps(pclk, mgr_timings, + in_width, in_height, out_width, + out_height, color_mode); + else *core_clk = dispc.feat->calc_core_clk(pclk, in_width, - in_height, out_width, out_height, - mem_to_mem); + in_height, out_width, out_height, + mem_to_mem); + + error = check_horiz_timing_omap3(pclk, lclk, mgr_timings, + pos_x, in_width, in_height, out_width, + out_height, *five_taps); + if (error && *five_taps) { + *five_taps = false; + goto again; + } error = (error || in_width > maxsinglelinewidth * 2 || (in_width > maxsinglelinewidth && *five_taps) || @@ -2226,7 +2240,7 @@ static int dispc_ovl_calc_scaling_34xx(unsigned long pclk, unsigned long lclk, } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error); if (check_horiz_timing_omap3(pclk, lclk, mgr_timings, pos_x, width, - height, out_width, out_height)){ + height, out_width, out_height, *five_taps)) { DSSERR("horizontal timing too tight\n"); return -EINVAL; }