From nobody Sat Sep 21 21:37:18 2024 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 E48A9C433EF for ; Wed, 29 Jun 2022 19:06:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229975AbiF2TGQ (ORCPT ); Wed, 29 Jun 2022 15:06:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49584 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229703AbiF2TGN (ORCPT ); Wed, 29 Jun 2022 15:06:13 -0400 Received: from mail-pg1-x52b.google.com (mail-pg1-x52b.google.com [IPv6:2607:f8b0:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F42D201A7 for ; Wed, 29 Jun 2022 12:06:11 -0700 (PDT) Received: by mail-pg1-x52b.google.com with SMTP id x8so11582411pgj.13 for ; Wed, 29 Jun 2022 12:06:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4iLjVUVD01Ec5lhezzfL4b6+r3st8AOk4JH6YYFpua4=; b=LjxdwGocB300LRlrR3clI8v8Q6E/VOBSmVpRm49ABnVrx64ZPtRJw6AYgvjQrC+zFP fnXrQCrsYOVOEJ/GV5LF/hPis5i67QMn6Qq6P7Qkc8gaMByE2H0BaG8PUJq2fAsw5Cqh io1ISaJDdagUxdEYmHYGp26m3cHHacY3Aa2M4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4iLjVUVD01Ec5lhezzfL4b6+r3st8AOk4JH6YYFpua4=; b=RRyG9zsZlXFDpLSuNbuh2mN+GfqAlfMZIUgJdAr1oIIfgjMrY7nkfRhWSxYqYOGr6S CEFee3llHkInxn8rO4JPq4JyY4/Is1iwW6InpTgvd4e/mfsIAbtU5hefy6KhjO++AK/Y mC4UFMGj8cAvbiMyLcNMXvnfRtcs6Phvx8MjvbqLoiM6caaNEeFfa4JL8KcoqTUWwSZb RdgOYF4HLfTfmKOG0aun6cFbw/RzNrV/RLocriGKZI9aLBfaB6Bb5CYkV9SRX2yL7rNz zzlztZjOaBPK6TNtpPcp8RPMjrJFGBziTH7/SXy2PkZ6plHCjMq0/Iv645HjY9LFLUKv 3lyA== X-Gm-Message-State: AJIora989wXBiTlAmy7b/hlnYJ14uFBL3DJ1L7hzTyKh5S2vSTqLZtUA S3Y+iHw8sQqHW23fF/bP06DrnA== X-Google-Smtp-Source: AGRyM1tdAZEaXsMXy4WDHw5pEvorBzaveQ/9uCKpadAq4lprCZEMl9Q/ZZY7m+ks6j6sgcZ+ER9EZw== X-Received: by 2002:a62:82cb:0:b0:525:79d9:ddc4 with SMTP id w194-20020a6282cb000000b0052579d9ddc4mr10478560pfd.48.1656529570846; Wed, 29 Jun 2022 12:06:10 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:9841:721:7d8b:4502]) by smtp.gmail.com with ESMTPSA id y11-20020a63de4b000000b0040c644e82efsm11572917pgi.43.2022.06.29.12.06.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jun 2022 12:06:10 -0700 (PDT) From: Hsin-Yi Wang To: Chun-Kuang Hu Cc: Philipp Zabel , David Airlie , Daniel Vetter , Matthias Brugger , dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] drm/mediatek: ensure bridge disable happends before suspend Date: Thu, 30 Jun 2022 03:05:46 +0800 Message-Id: <20220629190545.478113-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.37.0.rc0.161.g10f37bed90-goog MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Make sure bridge_disable will be called before suspend by calling drm_mode_config_helper_suspend() in .prepare callback. Signed-off-by: Hsin-Yi Wang Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: CK Hu --- The issue is found if suspend is called via VT2 in several MTK SoC (eg. MT8173, MT8183, MT8186) chromebook boards with eDP bridge: bridge disable is called through mtk-drm's suspend, and it needs to be called before bridge pm runtime suspend. So we move the hook to .prepare() and .complete(). --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/media= tek/mtk_drm_drv.c index 13a1bbe7ead7f..a42812e490007 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -828,8 +828,7 @@ static int mtk_drm_remove(struct platform_device *pdev) return 0; } =20 -#ifdef CONFIG_PM_SLEEP -static int mtk_drm_sys_suspend(struct device *dev) +static int mtk_drm_sys_prepare(struct device *dev) { struct mtk_drm_private *private =3D dev_get_drvdata(dev); struct drm_device *drm =3D private->drm; @@ -840,20 +839,21 @@ static int mtk_drm_sys_suspend(struct device *dev) return ret; } =20 -static int mtk_drm_sys_resume(struct device *dev) +static void mtk_drm_sys_complete(struct device *dev) { struct mtk_drm_private *private =3D dev_get_drvdata(dev); struct drm_device *drm =3D private->drm; int ret; =20 ret =3D drm_mode_config_helper_resume(drm); - - return ret; + if (ret) + dev_err(dev, "Failed to resume\n"); } -#endif =20 -static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend, - mtk_drm_sys_resume); +static const struct dev_pm_ops mtk_drm_pm_ops =3D { + .prepare =3D mtk_drm_sys_prepare, + .complete =3D mtk_drm_sys_complete, +}; =20 static struct platform_driver mtk_drm_platform_driver =3D { .probe =3D mtk_drm_probe, --=20 2.37.0.rc0.161.g10f37bed90-goog