From patchwork Wed Sep 1 20:19:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 12470239 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 766D7C43214 for ; Wed, 1 Sep 2021 20:20:53 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4BB9F60FC0 for ; Wed, 1 Sep 2021 20:20:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 4BB9F60FC0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E220C6E2ED; Wed, 1 Sep 2021 20:20:51 +0000 (UTC) Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by gabe.freedesktop.org (Postfix) with ESMTPS id 316D26E2E1 for ; Wed, 1 Sep 2021 20:20:51 +0000 (UTC) Received: by mail-pj1-x1029.google.com with SMTP id mw10-20020a17090b4d0a00b0017b59213831so582435pjb.0 for ; Wed, 01 Sep 2021 13:20:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=dXkXwd4vEP4bwY9rQawnEqC6kwS+NIIDi4QUwZ6cGtQ=; b=EjRpUS2pwumz9y0I78cbBHrql1evvQsWCNm51l0dM73D/8WNx855hwhFYSzlErwRHk YcS15dy5jZkeq0WUu21+obBJn5yMCRcK32TO3GSQKrmQRdNaYUdDMSuuyR8WI30GWU4g JqjwHgBivWnaa1uyreX+etFVlEzjH/1onRP3Q= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=dXkXwd4vEP4bwY9rQawnEqC6kwS+NIIDi4QUwZ6cGtQ=; b=kP+SF07JLmcW85W+UW9S2sc0H8YFzA+TF2pOFfDOaT3r1s7Hb2vI0aRJyqoTa+frSK krLTQCR6RSihyBjh9Srvi2dJkyIAu8eS+7kyoS4gRteXTuKk00eJvHkif+ZYsPcr/Tyd dmGofSteThJgrRfWKyLEn3Thi1fiSisIOgju18QNgrSwzhQZ09Yq0fIIiDxTSXMlTql0 5Wa0Yty/2gr+6TsVAKgNN7LNptOesGIaemrRTvCoS+U+aAGSeRzVoOapMhtRFgFobGpr p0o2mXyuH+lXbiq1hWWyCuUpCUCeENc9y8C7yYE3Ei/WyFzQp5zfO71YAYpGoMQiGzde T7cQ== X-Gm-Message-State: AOAM5304nlXWoqJcHcPL4AcXWLlYKPhm/HcF8YfcmozQv4TE5n1Qo0La zWKplD1aphW0OaVrR9iyzGeR4A== X-Google-Smtp-Source: ABdhPJwL4AOuiR68h4fnDH1vn8eNeonNevqm7uEBhMAzmdJMIoUAPeb/6W9tokMMB5TvMjAgjvxvgQ== X-Received: by 2002:a17:902:c406:b0:138:c28f:a779 with SMTP id k6-20020a170902c40600b00138c28fa779mr833921plk.1.1630527650785; Wed, 01 Sep 2021 13:20:50 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:201:958b:b561:a735:e774]) by smtp.gmail.com with ESMTPSA id x15sm321178pfq.31.2021.09.01.13.20.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Sep 2021 13:20:50 -0700 (PDT) From: Douglas Anderson To: Thierry Reding , Rob Herring , Sam Ravnborg Cc: Maarten Lankhorst , linux-arm-msm@vger.kernel.org, Bjorn Andersson , Linus W , Daniel Vetter , devicetree@vger.kernel.org, Steev Klimaszewski , Thomas Zimmermann , Maxime Ripard , David Airlie , dri-devel@lists.freedesktop.org, Douglas Anderson , linux-kernel@vger.kernel.org Subject: [PATCH v3 13/16] drm/panel-simple-edp: hpd_reliable shouldn't be subtraced from hpd_absent Date: Wed, 1 Sep 2021 13:19:31 -0700 Message-Id: <20210901131531.v3.13.I2522235fca3aa6790ede0bf22a93d79a1f694e6b@changeid> X-Mailer: git-send-email 2.33.0.259.gc128427fd7-goog In-Reply-To: <20210901201934.1084250-1-dianders@chromium.org> References: <20210901201934.1084250-1-dianders@chromium.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Now that the delays are named / described with eDP-centric names, it becomes clear that we should really specify the "hpd_reliable" and "hpd_absent" separately without taking the other into account. Let's fix it. This should be a no-op change and just adjust how we specify things. The actual delays should be the same before and after for the one panel that currently species both "hpd_reliable" and "hpd_absent". Signed-off-by: Douglas Anderson --- (no changes since v1) drivers/gpu/drm/panel/panel-simple-edp.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-simple-edp.c b/drivers/gpu/drm/panel/panel-simple-edp.c index ede5e3e4920b..762589ef66c3 100644 --- a/drivers/gpu/drm/panel/panel-simple-edp.c +++ b/drivers/gpu/drm/panel/panel-simple-edp.c @@ -423,7 +423,7 @@ static int panel_edp_prepare_once(struct panel_edp *p) delay = p->desc->delay.hpd_reliable; if (p->no_hpd) - delay += p->desc->delay.hpd_absent; + delay = max(delay, p->desc->delay.hpd_absent); if (delay) msleep(delay); @@ -1039,15 +1039,13 @@ static const struct panel_desc boe_nv133fhm_n61 = { * spike on the HPD line. It was explained that this spike * was until the TCON data download was complete. On * one system this was measured at 8 ms. We'll put 15 ms - * in the prepare delay just to be safe and take it away - * from the hpd_absent (which would otherwise be 200 ms) - * to handle this. That means: + * in the prepare delay just to be safe. That means: * - If HPD isn't hooked up you still have 200 ms delay. * - If HPD is hooked up we won't try to look at it for the * first 15 ms. */ .hpd_reliable = 15, - .hpd_absent = 185, + .hpd_absent = 200, .unprepare = 500, },