From patchwork Tue Nov 30 18:15:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SmFzb24tSkggTGluICjmnpfnnb/npaUp?= X-Patchwork-Id: 12647983 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4301CC433FE for ; Tue, 30 Nov 2021 18:16:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 56B076E040; Tue, 30 Nov 2021 18:16:00 +0000 (UTC) Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by gabe.freedesktop.org (Postfix) with ESMTPS id 898676E040 for ; Tue, 30 Nov 2021 18:15:58 +0000 (UTC) X-UUID: b1c7bbe20b23490d9a8a42398b27a50b-20211201 X-UUID: b1c7bbe20b23490d9a8a42398b27a50b-20211201 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 437039697; Wed, 01 Dec 2021 02:15:55 +0800 Received: from mtkexhb01.mediatek.inc (172.21.101.102) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 1 Dec 2021 02:15:54 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkexhb01.mediatek.inc (172.21.101.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 1 Dec 2021 02:15:54 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 1 Dec 2021 02:15:54 +0800 From: jason-jh.lin To: Chun-Kuang Hu , Philipp Zabel , Matthias Brugger , Subject: [PATCH v3 2/2] drm/mediatek: add devlink to cmdq dev Date: Wed, 1 Dec 2021 02:15:52 +0800 Message-ID: <20211130181552.9928-3-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20211130181552.9928-1-jason-jh.lin@mediatek.com> References: <20211130181552.9928-1-jason-jh.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N 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: fshao@chromium.org, David Airlie , "jason-jh.lin" , singo.chang@mediatek.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, nancy.lin@mediatek.com, linux-mediatek@lists.infradead.org, hsinyi@chromium.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add devlink to cmdq to make sure the order of suspend and resume is correct. Signed-off-by: jason-jh.lin --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 6ca96802fd77..88b57a20f26d 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -61,6 +61,7 @@ struct mtk_drm_crtc { #endif struct device *mmsys_dev; + struct device *drm_dev; struct mtk_mutex *mutex; unsigned int ddp_comp_nr; struct mtk_ddp_comp **ddp_comp; @@ -160,6 +161,7 @@ static void mtk_drm_crtc_destroy(struct drm_crtc *crtc) mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle); if (mtk_crtc->cmdq_client.chan) { + device_link_remove(mtk_crtc->drm_dev, mtk_crtc->cmdq_client.chan->mbox->dev); mbox_free_channel(mtk_crtc->cmdq_client.chan); mtk_crtc->cmdq_client.chan = NULL; } @@ -908,6 +910,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, return -ENOMEM; mtk_crtc->mmsys_dev = priv->mmsys_dev; + mtk_crtc->drm_dev = priv->dev; mtk_crtc->ddp_comp_nr = path_len; mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc->ddp_comp_nr, sizeof(*mtk_crtc->ddp_comp), @@ -975,6 +978,17 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, } if (mtk_crtc->cmdq_client.chan) { + struct device_link *link; + + /* add devlink to cmdq dev to make sure suspend/resume order is correct */ + link = device_link_add(priv->dev, mtk_crtc->cmdq_client.chan->mbox->dev, + DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS); + if (!link) { + dev_err(priv->dev, "Unable to link dev=%s\n", + dev_name(mtk_crtc->cmdq_client.chan->mbox->dev)); + return -ENODEV; + } + ret = of_property_read_u32_index(priv->mutex_node, "mediatek,gce-events", i,