From nobody Fri Sep 20 14:50:22 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 64B08CA0FE6 for ; Fri, 1 Sep 2023 08:10:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242348AbjIAIKg (ORCPT ); Fri, 1 Sep 2023 04:10:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43950 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348626AbjIAIKP (ORCPT ); Fri, 1 Sep 2023 04:10:15 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E915B10E4; Fri, 1 Sep 2023 01:10:04 -0700 (PDT) X-UUID: eeae6fbc489e11eea33bb35ae8d461a2-20230901 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=pan37MMUAtXdTtGayZJ6AbpcFfvHsqT8tHnhc1Zmxg4=; b=ZTaZ8MqGNZCh4N2NQN5aI48AMRqqLJOBNTvrW/Oy04gJVg1+m/yEPIIj6lE3Swcq7KYf/OLhmQiHKU/n3ehgCYHpC0MgJkscNhTveNonevDoF7kHUWyBgps869MpRiv95xp++2f2AH9iE5oFC94H3QeY84mVE6nu4YLsUC7OFd0=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.31,REQID:e1c33d0a-3519-4a6c-beba-d5c5d6319496,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:0ad78a4,CLOUDID:256433ef-9a6e-4c39-b73e-f2bc08ca3dc5,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO, DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: eeae6fbc489e11eea33bb35ae8d461a2-20230901 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 622437176; Fri, 01 Sep 2023 16:09:54 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by MTKMBS14N1.mediatek.inc (172.21.101.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Fri, 1 Sep 2023 16:09:52 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 1 Sep 2023 16:09:52 +0800 From: Tinghan Shen To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Tinghan Shen CC: , , , , , Subject: [PATCH v17 08/14] remoteproc: mediatek: Probe SCP cluster on multi-core SCP Date: Fri, 1 Sep 2023 16:09:29 +0800 Message-ID: <20230901080935.14571-9-tinghan.shen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230901080935.14571-1-tinghan.shen@mediatek.com> References: <20230901080935.14571-1-tinghan.shen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The difference of single-core SCP and multi-core SCP device tree is the presence of child device nodes described SCP cores. The SCP driver populates the platform device and checks the child nodes to identify whether it's a single-core SCP or a multi-core SCP. Add the remoteproc instances of multi-core SCP to the SCP cluster list. When the SCP driver is removed, it cleanup resources by walking through the cluster list. Signed-off-by: Tinghan Shen Reviewed-by: AngeloGioacchino Del Regno --- drivers/remoteproc/mtk_scp.c | 123 +++++++++++++++++++++++++++++++++-- 1 file changed, 118 insertions(+), 5 deletions(-) diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index d67dcabdab9e..685e2c2bb6ee 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -855,7 +855,8 @@ static void scp_remove_rpmsg_subdev(struct mtk_scp *scp) } =20 static struct mtk_scp *scp_rproc_init(struct platform_device *pdev, - struct mtk_scp_of_cluster *scp_cluster) + struct mtk_scp_of_cluster *scp_cluster, + const struct mtk_scp_of_data *of_data) { struct device *dev =3D &pdev->dev; struct device_node *np =3D dev->of_node; @@ -878,7 +879,7 @@ static struct mtk_scp *scp_rproc_init(struct platform_d= evice *pdev, scp =3D rproc->priv; scp->rproc =3D rproc; scp->dev =3D dev; - scp->data =3D of_device_get_match_data(dev); + scp->data =3D of_data; scp->cluster =3D scp_cluster; platform_set_drvdata(pdev, scp); =20 @@ -951,15 +952,15 @@ static void scp_free(struct mtk_scp *scp) mutex_destroy(&scp->send_lock); } =20 -static int scp_cluster_init(struct platform_device *pdev, - struct mtk_scp_of_cluster *scp_cluster) +static int scp_add_single_core(struct platform_device *pdev, + struct mtk_scp_of_cluster *scp_cluster) { struct device *dev =3D &pdev->dev; struct list_head *scp_list =3D &scp_cluster->mtk_scp_list; struct mtk_scp *scp; int ret; =20 - scp =3D scp_rproc_init(pdev, scp_cluster); + scp =3D scp_rproc_init(pdev, scp_cluster, of_device_get_match_data(dev)); if (IS_ERR(scp)) return PTR_ERR(scp); =20 @@ -975,6 +976,107 @@ static int scp_cluster_init(struct platform_device *p= dev, return 0; } =20 +static int scp_add_multi_core(struct platform_device *pdev, + struct mtk_scp_of_cluster *scp_cluster) +{ + struct device *dev =3D &pdev->dev; + struct device_node *np =3D dev_of_node(dev); + struct platform_device *cpdev; + struct device_node *child; + struct list_head *scp_list =3D &scp_cluster->mtk_scp_list; + const struct mtk_scp_of_data **cluster_of_data; + struct mtk_scp *scp, *temp; + int core_id =3D 0; + int ret; + + cluster_of_data =3D (const struct mtk_scp_of_data **)of_device_get_match_= data(dev); + + for_each_available_child_of_node(np, child) { + if (!cluster_of_data[core_id]) { + ret =3D -EINVAL; + dev_err(dev, "Not support core %d\n", core_id); + of_node_put(child); + goto init_fail; + } + + cpdev =3D of_find_device_by_node(child); + if (!cpdev) { + ret =3D -ENODEV; + dev_err(dev, "Not found platform device for core %d\n", core_id); + of_node_put(child); + goto init_fail; + } + + scp =3D scp_rproc_init(cpdev, scp_cluster, cluster_of_data[core_id]); + put_device(&cpdev->dev); + if (IS_ERR(scp)) { + ret =3D PTR_ERR(scp); + dev_err(dev, "Failed to initialize core %d rproc\n", core_id); + of_node_put(child); + goto init_fail; + } + + ret =3D rproc_add(scp->rproc); + if (ret) { + dev_err(dev, "Failed to add rproc of core %d\n", core_id); + of_node_put(child); + scp_free(scp); + goto init_fail; + } + + list_add_tail(&scp->elem, scp_list); + core_id++; + } + + /* Here we are setting the platform device for @pdev to the last @scp tha= t was + * created, which is needed because (1) scp_rproc_init() is calling + * platform_set_drvdata() on the child platform devices and (2) we need a= handle to + * the cluster list in scp_remove(). + */ + platform_set_drvdata(pdev, scp); + + return 0; + +init_fail: + list_for_each_entry_safe_reverse(scp, temp, scp_list, elem) { + list_del(&scp->elem); + rproc_del(scp->rproc); + scp_free(scp); + } + + return ret; +} + +static int scp_is_single_core(struct platform_device *pdev) +{ + struct device *dev =3D &pdev->dev; + struct device_node *np =3D dev_of_node(dev); + struct device_node *child; + + child =3D of_get_next_available_child(np, NULL); + if (!child) + return dev_err_probe(dev, -ENODEV, "No child node\n"); + + of_node_put(child); + return of_node_name_eq(child, "cros-ec-rpmsg"); +} + +static int scp_cluster_init(struct platform_device *pdev, struct mtk_scp_o= f_cluster *scp_cluster) +{ + int ret; + + ret =3D scp_is_single_core(pdev); + if (ret < 0) + return ret; + + if (ret) + ret =3D scp_add_single_core(pdev, scp_cluster); + else + ret =3D scp_add_multi_core(pdev, scp_cluster); + + return ret; +} + static int scp_probe(struct platform_device *pdev) { struct device *dev =3D &pdev->dev; @@ -1007,6 +1109,10 @@ static int scp_probe(struct platform_device *pdev) =20 INIT_LIST_HEAD(&scp_cluster->mtk_scp_list); =20 + ret =3D devm_of_platform_populate(dev); + if (ret) + return dev_err_probe(dev, ret, "Failed to populate platform devices\n"); + ret =3D scp_cluster_init(pdev, scp_cluster); if (ret) return ret; @@ -1101,12 +1207,19 @@ static const struct mtk_scp_of_data mt8195_of_data_= c1 =3D { .host_to_scp_int_bit =3D MT8195_CORE1_HOST_IPC_INT_BIT, }; =20 +static const struct mtk_scp_of_data *mt8195_of_data_cores[] =3D { + &mt8195_of_data, + &mt8195_of_data_c1, + NULL +}; + static const struct of_device_id mtk_scp_of_match[] =3D { { .compatible =3D "mediatek,mt8183-scp", .data =3D &mt8183_of_data }, { .compatible =3D "mediatek,mt8186-scp", .data =3D &mt8186_of_data }, { .compatible =3D "mediatek,mt8188-scp", .data =3D &mt8188_of_data }, { .compatible =3D "mediatek,mt8192-scp", .data =3D &mt8192_of_data }, { .compatible =3D "mediatek,mt8195-scp", .data =3D &mt8195_of_data }, + { .compatible =3D "mediatek,mt8195-scp-dual", .data =3D &mt8195_of_data_c= ores }, {}, }; MODULE_DEVICE_TABLE(of, mtk_scp_of_match); --=20 2.18.0