From patchwork Thu Apr 14 12:19:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sankeerth Billakanti (QUIC)" X-Patchwork-Id: 12813407 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0CC5AC433EF for ; Thu, 14 Apr 2022 12:20:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243096AbiDNMWx (ORCPT ); Thu, 14 Apr 2022 08:22:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243178AbiDNMWs (ORCPT ); Thu, 14 Apr 2022 08:22:48 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9BB0B65167; Thu, 14 Apr 2022 05:20:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1649938824; x=1681474824; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=KlJZfmC6j3K6ts3F6kJZdzJDkVnIINRSALGaXn75HeI=; b=i5vuJZ1ve2hdMyKgW+e0qK3jyp1+B5DtNLcmfK6xGaHgNx206+WfZSAO vduSbso70HUeh3epFrVj28T0RGYIw1RC0Xh2pywe8A9GfmfNclwF8FOd3 HACS6Js+RoUtXIYc3/lOfjJ95nwoAhjwxTliCplq645eR95hDYQa9Xj37 I=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 14 Apr 2022 05:20:24 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Apr 2022 05:20:23 -0700 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 15.2.986.22; Thu, 14 Apr 2022 05:20:23 -0700 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 15.2.986.22; Thu, 14 Apr 2022 05:20:16 -0700 From: Sankeerth Billakanti To: , , , , CC: Sankeerth Billakanti , , , , , , , , , , , , , , , Subject: [PATCH v7 4/4] Support the eDP modes given by panel Date: Thu, 14 Apr 2022 17:49:26 +0530 Message-ID: <1649938766-6768-5-git-send-email-quic_sbillaka@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1649938766-6768-1-git-send-email-quic_sbillaka@quicinc.com> References: <1649938766-6768-1-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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The eDP controller does not have a reliable way keep panel powered on to read the sink capabilities. So, the controller driver cannot validate if a mode can be supported by the source. We will rely on the panel driver to populate only the supported modes for now. Signed-off-by: Sankeerth Billakanti Reviewed-by: Douglas Anderson --- drivers/gpu/drm/msm/dp/dp_display.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index c7277f0..0f18a16 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -998,6 +998,14 @@ enum drm_mode_status dp_bridge_mode_valid(struct drm_bridge *bridge, return -EINVAL; } + /* + * The eDP controller currently does not have a reliable way of + * enabling panel power to read sink capabilities. So, we rely + * on the panel driver to populate only supported modes for now. + */ + if (dp->is_edp) + return MODE_OK; + if ((dp->max_pclk_khz <= 0) || (dp->max_pclk_khz > DP_MAX_PIXEL_CLK_KHZ) || (mode->clock > dp->max_pclk_khz))