From mboxrd@z Thu Jan 1 00:00:00 1970 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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 80DCBC432C1 for ; Tue, 24 Sep 2019 16:42:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 50CD621906 for ; Tue, 24 Sep 2019 16:42:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569343379; bh=LwusMpGPNsCVEui+CxCkO+wYv9bCaUMlqnWW/yVJQbo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=eMYrSSNpzSxGEP1Rk+54iOtTEXPbLTgKXAvrv/LFiU+k3Ec1bKrXcKlZ6RHIeFHzv V3qkfLu1ikZOGCXRC80HBy2ITk/hhh4dXsvz2bo5jOeMZf1MdGT4hzJFUhzDfZXKB1 EsSZCBLDbcYOLaS63EcHzvGoqh32k+WiMqhziis4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2632850AbfIXQm6 (ORCPT ); Tue, 24 Sep 2019 12:42:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:59088 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2409825AbfIXQmi (ORCPT ); Tue, 24 Sep 2019 12:42:38 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C4DEC21848; Tue, 24 Sep 2019 16:42:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569343357; bh=LwusMpGPNsCVEui+CxCkO+wYv9bCaUMlqnWW/yVJQbo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EMXfdF3GuiLcJVJZl3b1vg9Jzez5QhWKVT0g2OUtULheuApGlChvHMg5pIWwP/Y01 XbElByQWWKoUmnb7lqt5Rc+1dY+D3bpWifk7VOWX6x2SazBBtmabDuhYzK13aHQCbc aESi4qLgMP1X5dKTlfLP5+ADRuO0p4xfeeAQDs7A= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sean Paul , Zain Wang , Tomasz Figa , Heiko Stuebner , Sasha Levin , dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.3 18/87] drm/rockchip: Check for fast link training before enabling psr Date: Tue, 24 Sep 2019 12:40:34 -0400 Message-Id: <20190924164144.25591-18-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190924164144.25591-1-sashal@kernel.org> References: <20190924164144.25591-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sean Paul [ Upstream commit ad309284a52be47c8b3126c9376358bf381861bc ] Once we start shutting off the link during PSR, we're going to want fast training to work. If the display doesn't support fast training, don't enable psr. Changes in v2: - None Changes in v3: - None Changes in v4: - None Changes in v5: - None Link to v1: https://patchwork.freedesktop.org/patch/msgid/20190228210939.83386-3-sean@poorly.run Link to v2: https://patchwork.freedesktop.org/patch/msgid/20190326204509.96515-2-sean@poorly.run Link to v3: https://patchwork.freedesktop.org/patch/msgid/20190502194956.218441-9-sean@poorly.run Link to v4: https://patchwork.freedesktop.org/patch/msgid/20190508160920.144739-8-sean@poorly.run Cc: Zain Wang Cc: Tomasz Figa Tested-by: Heiko Stuebner Reviewed-by: Heiko Stuebner Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20190611160844.257498-8-sean@poorly.run Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 3f7f4880be091..37bd541166a5e 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1035,16 +1035,17 @@ static int analogix_dp_commit(struct analogix_dp_device *dp) if (ret) return ret; + /* Check whether panel supports fast training */ + ret = analogix_dp_fast_link_train_detection(dp); + if (ret) + dp->psr_enable = false; + if (dp->psr_enable) { ret = analogix_dp_enable_sink_psr(dp); if (ret) return ret; } - /* Check whether panel supports fast training */ - ret = analogix_dp_fast_link_train_detection(dp); - if (ret) - dp->psr_enable = false; return ret; } -- 2.20.1