From patchwork Thu Oct 24 16:45:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thierry Reding X-Patchwork-Id: 11210293 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8628814ED for ; Thu, 24 Oct 2019 16:46:33 +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 6A71421929 for ; Thu, 24 Oct 2019 16:46:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6A71421929 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2FAE46E4B0; Thu, 24 Oct 2019 16:46:32 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-wm1-x342.google.com (mail-wm1-x342.google.com [IPv6:2a00:1450:4864:20::342]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0E73B6E4BA for ; Thu, 24 Oct 2019 16:46:08 +0000 (UTC) Received: by mail-wm1-x342.google.com with SMTP id g24so3592884wmh.5 for ; Thu, 24 Oct 2019 09:46:07 -0700 (PDT) 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=v7sIBy+NeFxNLTjK62J325/VvVdEVUMB1reiPu3pIc8=; b=ShH6gxUNIMVXwrw5awm7XMbMTlx8GFLuNBnqZwCLOIU/nmqdmE76iJwjZmZvngVRsL vmpWhWLD+uSJjInS9dLetAANbBU5h/LwX22EsKvFZJBUb7ERY/18n1tnrYQZCDpDa7ps PEree52n5A+Jxh8+flD0tsF2BHSbLQQaO8fkPsxbBfT4ggZoaQR/8uIE3vfqBoktOjTF IOLriEd3/6OZ2wwfHoYJw9Vbm7ubFRSA+Q0JUQLHw23XZUHk4ULhNYA+M5tr9fDo0Fu9 2/ImEUeN7aDBt4iJ7twFc2c0AYRVZr4+BMV8wzDzhGF5gsx+R4/zRsve0qJmfzIdNJHR Q7Tg== X-Gm-Message-State: APjAAAXHeaQ+vk2UG0k0Y79Pa20vSVAyGQqUeYwNwV072KzUDRnnG5iI 6gQcjizcwyK3encwwXnPzY8= X-Google-Smtp-Source: APXvYqzNMQfQSe21eo66v5s9QJVWKaQWzPmmQo+HbPGXpXR1lqS8E7bqjTx+spu0jHtb5iCHVx5TQQ== X-Received: by 2002:a1c:41c1:: with SMTP id o184mr6063460wma.81.1571935565957; Thu, 24 Oct 2019 09:46:05 -0700 (PDT) Received: from localhost (p2E5BE2CE.dip0.t-ipconnect.de. [46.91.226.206]) by smtp.gmail.com with ESMTPSA id r3sm42193380wre.29.2019.10.24.09.46.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Oct 2019 09:46:05 -0700 (PDT) From: Thierry Reding To: Thierry Reding Subject: [PATCH 13/32] drm/tegra: dp: Enable alternate scrambler reset when supported Date: Thu, 24 Oct 2019 18:45:15 +0200 Message-Id: <20191024164534.132764-14-thierry.reding@gmail.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191024164534.132764-1-thierry.reding@gmail.com> References: <20191024164534.132764-1-thierry.reding@gmail.com> MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=v7sIBy+NeFxNLTjK62J325/VvVdEVUMB1reiPu3pIc8=; b=h2AkK8Fk42hDKnysvCBeOGI1jEnFs/G/r+XJcTwS4ymT5ODIFNyQGWEPknw1kx6V1i QvibakSkAbdHHpT/L0egKH5XsGcX3ntr5VS6QASDLiVIMdWCu/qyhl3VPTjyxxWlZeqC cOq9PCsJoRIxzwcVaEr8zdDrUnLtzWVS6j8cwzry2JAghgu4Mqv195T3aqMefkZXmqOq tuXucWEQY6Bu+nxz1OKB7RiMKmlmG1QvfI2QQgnC41DDD0SnD0WyaFqc99T0fe/TVlVR GmwRL/ZxJxF70qpNaXSAIoTzag4cTjaKdDo3vvHKZp5iXkdpMtg0l5JksOTvwQi8KN8s sTNQ== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Thierry Reding If the sink is eDP and supports the alternate scrambler reset, enable it. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dp.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/tegra/dp.c b/drivers/gpu/drm/tegra/dp.c index ca287b50fad8..638081b568f4 100644 --- a/drivers/gpu/drm/tegra/dp.c +++ b/drivers/gpu/drm/tegra/dp.c @@ -225,5 +225,12 @@ int drm_dp_link_configure(struct drm_dp_aux *aux, struct drm_dp_link *link) if (err < 0) return err; + if (link->caps.alternate_scrambler_reset) { + err = drm_dp_dpcd_writeb(aux, DP_EDP_CONFIGURATION_SET, + DP_ALTERNATE_SCRAMBLER_RESET_ENABLE); + if (err < 0) + return err; + } + return 0; }