From patchwork Tue Nov 16 07:07:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sankeerth Billakanti (QUIC)" X-Patchwork-Id: 12621607 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19334C433F5 for ; Tue, 16 Nov 2021 07:08:39 +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 CA70161B3D for ; Tue, 16 Nov 2021 07:08:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org CA70161B3D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=quicinc.com 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 557446E209; Tue, 16 Nov 2021 07:08:29 +0000 (UTC) Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by gabe.freedesktop.org (Postfix) with ESMTPS id B3A656E117; Tue, 16 Nov 2021 07:08:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1637046507; x=1668582507; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=cNmbT8/rJgG7bxdZj/1w3/CE2sIkSDiX/FJADzDXwos=; b=RkrSgYfgNmyXXesi19DiTSBDDB/mHbWzUODX37m5POjI2fEggDnVyGOB MGThGFiOoakG4Oy7lqYWKCdkOCGvTJ0MVFJ0wowJBIG27WA/4joZQmmsw 4n3YhldvurNcqQXgmU6ZMdf2pdV3UH4I3rJaHc13auf5dx//++gEGyGbt c=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-01.qualcomm.com with ESMTP; 15 Nov 2021 23:08:26 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Nov 2021 23:08:26 -0800 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Mon, 15 Nov 2021 23:08:11 -0800 Received: from sbillaka-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Mon, 15 Nov 2021 23:08:07 -0800 From: Sankeerth Billakanti To: , , , Subject: [PATCH v1 3/3] phy: qcom: Program SSC only if supported by sink Date: Tue, 16 Nov 2021 12:37:38 +0530 Message-ID: <1637046458-20607-4-git-send-email-quic_sbillaka@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1637046458-20607-1-git-send-email-quic_sbillaka@quicinc.com> References: <1637046458-20607-1-git-send-email-quic_sbillaka@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) 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: , Cc: quic_kalyant@quicinc.com, Sankeerth Billakanti , dianders@chromium.org, quic_abhinavk@quicinc.com, swboyd@chromium.org, seanpaul@chromium.org, quic_mkrishn@quicinc.com, quic_khsieh@quicinc.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Some legacy eDP sinks may not support SSC. The support for SSC is indicated through an opts flag from the controller driver. This change will enable SSC only if the sink supports it. Signed-off-by: Sankeerth Billakanti Reviewed-by: Stephen Boyd --- drivers/phy/qualcomm/phy-qcom-edp.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c index 6d9404d..06ba609 100644 --- a/drivers/phy/qualcomm/phy-qcom-edp.c +++ b/drivers/phy/qualcomm/phy-qcom-edp.c @@ -335,9 +335,11 @@ static int qcom_edp_phy_power_on(struct phy *phy) writel(0x00, edp->tx0 + TXn_LANE_MODE_1); writel(0x00, edp->tx1 + TXn_LANE_MODE_1); - ret = qcom_edp_configure_ssc(edp); - if (ret) - return ret; + if (edp->dp_opts.ssc) { + ret = qcom_edp_configure_ssc(edp); + if (ret) + return ret; + } ret = qcom_edp_configure_pll(edp); if (ret)