From patchwork Thu Mar 4 01:25:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wangjingyu X-Patchwork-Id: 12115309 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=-16.8 required=3.0 tests=BAYES_00, 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 B1BF8C433E0 for ; Thu, 4 Mar 2021 01:25:45 +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 1752A65158 for ; Thu, 4 Mar 2021 01:25:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1752A65158 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=uniontech.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 6A8AB6E14F; Thu, 4 Mar 2021 01:25:44 +0000 (UTC) Received: from lucky1.263xmail.com (lucky1.263xmail.com [211.157.147.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2CC126E14F; Thu, 4 Mar 2021 01:25:42 +0000 (UTC) Received: from localhost (unknown [192.168.167.69]) by lucky1.263xmail.com (Postfix) with ESMTP id 3C267B945E; Thu, 4 Mar 2021 09:25:39 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED: 0 X-ANTISPAM-LEVEL: 2 X-ABS-CHECKED: 0 Received: from localhost.localdomain (unknown [124.126.19.250]) by smtp.263.net (postfix) whith ESMTP id P17142T139833580455680S1614821138633857_; Thu, 04 Mar 2021 09:25:38 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: <622fa203a92ef646e76853adc9a0004c> X-RL-SENDER: wangjingyu@uniontech.com X-SENDER: wangjingyu@uniontech.com X-LOGIN-NAME: wangjingyu@uniontech.com X-FST-TO: alexander.deucher@amd.com X-SENDER-IP: 124.126.19.250 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: wangjingyu To: alexander.deucher@amd.com Subject: [PATCH] MIPS: drm/radeon: A gray screen appears when going into hibernation(S4) Date: Thu, 4 Mar 2021 09:25:35 +0800 Message-Id: <20210304012535.25475-1-wangjingyu@uniontech.com> X-Mailer: git-send-email 2.11.0 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: , Cc: zhuyong , airlied@linux.ie, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, wangjingyu , amd-gfx@lists.freedesktop.org, christian.koenig@amd.com MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Radeon Card: Caicos[Radeon HD 6450/7450/8450 /R5 230 OEM] there is no gray screen when echo 4>/sys/module/drm/parameters/debug, so the WREG32 function after DRM_DEBUG_KMS may have wrong when going into hibernation.the delay of msleep(50) just can fix gray screen. Signed-off-by: wangjingyu Signed-off-by: zhuyong --- drivers/gpu/drm/radeon/radeon_display.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 652af7a134bd..1be50f949bb4 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -226,6 +226,8 @@ void radeon_crtc_load_lut(struct drm_crtc *crtc) if (!crtc->enabled) return; + sleep(50); + if (ASIC_IS_DCE5(rdev)) dce5_crtc_load_lut(crtc); else if (ASIC_IS_DCE4(rdev))