From patchwork Fri Mar 13 09:34:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 11436477 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7E9B8921 for ; Fri, 13 Mar 2020 09:36:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 4F37C2073E for ; Fri, 13 Mar 2020 09:36:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="s+C7A271"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="HhCBFr7u" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4F37C2073E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=y36r+ngPwwYExCdFxdrqDeOXTHKngRpL3E0SPZFFvFY=; b=s+C7A271zfxNgR 2IgKLe/TmzPDM4UfmLprJCMOQ5LsbFEQtc/fjpNGTzvhKPTKVOOCKdco8FJWvEOfSl+muMFTo9arB TA3KBO/ar9/0ld2AcdQeMp0lTHqR0Fw+Pc5VclnQu8E2hRUT/TJfXq1eWLG7N9OGI4QmslNxc+qDY k4JDs5pXLQWVX4IyHzxaZdrhskaGmNU/nkADwOiZ+c9G42X+r32xZ4QWwi3gbueyVz8LhoIDr60+v Dst6rMbhM5ek/6Cf0DqBNC80WZREwzNc+j7M+0eFurkb7ng7jzO+k0+brdbtOUNsEIdzvUVeCH+Hz pe/UXCsZSKOkTwaAFh3Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jCgjb-0008DC-UU; Fri, 13 Mar 2020 09:36:03 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jCgiE-0005h4-UE; Fri, 13 Mar 2020 09:34:40 +0000 X-UUID: b7918b4a164b48e2861c9b5e3d0f2781-20200313 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=nSetGGb2jD7H2Q1+b1MHx20VuqlBL37mjvVtdatOQl4=; b=HhCBFr7uTuiCtwbk4tyC9IakvBbu1exjsWb8YGt3jZVIQmsojH/nMgzg/Iy0efWFIo8QVHefq/CYnoNmyv4w/0dNdl+zsQldFPJD4wOYk3kB6r2fa1qBJh1oVVdZiDvb9EjNbt6unOTRPwPgKh4XwfN0QvW77hLE0JRrbfR5Reg=; X-UUID: b7918b4a164b48e2861c9b5e3d0f2781-20200313 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1222113180; Fri, 13 Mar 2020 01:34:32 -0800 Received: from MTKMBS07N2.mediatek.inc (172.21.101.141) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 13 Mar 2020 02:34:42 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 13 Mar 2020 17:33:33 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 13 Mar 2020 17:33:41 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case , Mark Brown Subject: [PATCH V4 09/13] interconnect: mediatek: Add mt8183 interconnect provider driver Date: Fri, 13 Mar 2020 17:34:22 +0800 Message-ID: <1584092066-24425-10-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> References: <1584092066-24425-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200313_023438_992300_A8487D63 X-CRM114-Status: GOOD ( 18.79 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Nicolas Boichat , Mike Turquette , srv_heupstream@mediatek.com, James Liao , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Henry Chen , Fan Chen , devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, Arvin Wang , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org Introduce Mediatek MT8183 specific provider driver using the interconnect framework. Signed-off-by: Henry Chen --- drivers/interconnect/Kconfig | 1 + drivers/interconnect/Makefile | 1 + drivers/interconnect/mediatek/Kconfig | 13 ++ drivers/interconnect/mediatek/Makefile | 3 + drivers/interconnect/mediatek/mtk-emi.c | 242 ++++++++++++++++++++++++++++++++ 5 files changed, 260 insertions(+) create mode 100644 drivers/interconnect/mediatek/Kconfig create mode 100644 drivers/interconnect/mediatek/Makefile create mode 100644 drivers/interconnect/mediatek/mtk-emi.c diff --git a/drivers/interconnect/Kconfig b/drivers/interconnect/Kconfig index bfa4ca3..dd9ecb6 100644 --- a/drivers/interconnect/Kconfig +++ b/drivers/interconnect/Kconfig @@ -12,5 +12,6 @@ menuconfig INTERCONNECT if INTERCONNECT source "drivers/interconnect/qcom/Kconfig" +source "drivers/interconnect/mediatek/Kconfig" endif diff --git a/drivers/interconnect/Makefile b/drivers/interconnect/Makefile index 725029a..330a108 100644 --- a/drivers/interconnect/Makefile +++ b/drivers/interconnect/Makefile @@ -5,3 +5,4 @@ icc-core-objs := core.o obj-$(CONFIG_INTERCONNECT) += icc-core.o obj-$(CONFIG_INTERCONNECT_QCOM) += qcom/ +obj-$(CONFIG_INTERCONNECT_MTK) += mediatek/ diff --git a/drivers/interconnect/mediatek/Kconfig b/drivers/interconnect/mediatek/Kconfig new file mode 100644 index 0000000..972d3bb --- /dev/null +++ b/drivers/interconnect/mediatek/Kconfig @@ -0,0 +1,13 @@ +config INTERCONNECT_MTK + bool "Mediatek Network-on-Chip interconnect drivers" + depends on ARCH_MEDIATEK + help + Support for Mediatek's Network-on-Chip interconnect hardware. + +config INTERCONNECT_MTK_EMI + tristate "Mediatek EMI interconnect driver" + depends on INTERCONNECT_MTK + depends on (MTK_DVFSRC && OF) + help + This is a driver for the Mediatek Network-on-Chip on DVFSRC-based + platforms. diff --git a/drivers/interconnect/mediatek/Makefile b/drivers/interconnect/mediatek/Makefile new file mode 100644 index 0000000..353842b --- /dev/null +++ b/drivers/interconnect/mediatek/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_INTERCONNECT_MTK_EMI) += mtk-emi.o \ No newline at end of file diff --git a/drivers/interconnect/mediatek/mtk-emi.c b/drivers/interconnect/mediatek/mtk-emi.c new file mode 100644 index 0000000..0a16992 --- /dev/null +++ b/drivers/interconnect/mediatek/mtk-emi.c @@ -0,0 +1,242 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019, The Linux Foundation. All rights reserved. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +enum mtk_icc_name { + SLAVE_DDR_EMI, + MASTER_MCUSYS, + MASTER_GPUSYS, + MASTER_MMSYS, + MASTER_MM_VPU, + MASTER_MM_DISP, + MASTER_MM_VDEC, + MASTER_MM_VENC, + MASTER_MM_CAM, + MASTER_MM_IMG, + MASTER_MM_MDP, +}; + +#define MT8183_MAX_LINKS 1 + +/** + * struct mtk_icc_node - Mediatek specific interconnect nodes + * @name: the node name used in debugfs + * @ep: true if the node is an end point. + * @id: a unique node identifier + * @links: an array of nodes where we can go next while traversing + * @num_links: the total number of @links + * @buswidth: width of the interconnect between a node and the bus + * @sum_avg: current sum aggregate value of all avg bw kBps requests + * @max_peak: current max aggregate value of all peak bw kBps requests + */ +struct mtk_icc_node { + unsigned char *name; + bool ep; + u16 id; + u16 links[MT8183_MAX_LINKS]; + u16 num_links; + u16 buswidth; + u64 sum_avg; + u64 max_peak; +}; + +struct mtk_icc_desc { + struct mtk_icc_node **nodes; + size_t num_nodes; +}; + +#define DEFINE_MNODE(_name, _id, _buswidth, _ep, ...) \ + static struct mtk_icc_node _name = { \ + .name = #_name, \ + .id = _id, \ + .buswidth = _buswidth, \ + .ep = _ep, \ + .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })), \ +} + +DEFINE_MNODE(ddr_emi, SLAVE_DDR_EMI, 1024, 1, 0); +DEFINE_MNODE(mcusys, MASTER_MCUSYS, 256, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(gpu, MASTER_GPUSYS, 256, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(mmsys, MASTER_MMSYS, 256, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(mm_vpu, MASTER_MM_VPU, 128, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_disp, MASTER_MM_DISP, 128, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_vdec, MASTER_MM_VDEC, 128, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_venc, MASTER_MM_VENC, 128, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_cam, MASTER_MM_CAM, 128, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_img, MASTER_MM_IMG, 128, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_mdp, MASTER_MM_MDP, 128, 0, MASTER_MMSYS); + +static struct mtk_icc_node *mt8183_icc_nodes[] = { + [MT8183_SLAVE_DDR_EMI] = &ddr_emi, + [MT8183_MASTER_MCUSYS] = &mcusys, + [MT8183_MASTER_GPU] = &gpu, + [MT8183_MASTER_MMSYS] = &mmsys, + [MT8183_MASTER_MM_VPU] = &mm_vpu, + [MT8183_MASTER_MM_DISP] = &mm_disp, + [MT8183_MASTER_MM_VDEC] = &mm_vdec, + [MT8183_MASTER_MM_VENC] = &mm_venc, + [MT8183_MASTER_MM_CAM] = &mm_cam, + [MT8183_MASTER_MM_IMG] = &mm_img, + [MT8183_MASTER_MM_MDP] = &mm_mdp, +}; + +static struct mtk_icc_desc mt8183_icc = { + .nodes = mt8183_icc_nodes, + .num_nodes = ARRAY_SIZE(mt8183_icc_nodes), +}; + +static int emi_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, + u32 peak_bw, u32 *agg_avg, u32 *agg_peak) +{ + struct mtk_icc_node *in; + + in = node->data; + + *agg_avg += avg_bw; + *agg_peak += peak_bw; + + in->sum_avg = *agg_avg; + in->max_peak = *agg_peak; + + return 0; +} + +static int emi_icc_set(struct icc_node *src, struct icc_node *dst) +{ + int ret = 0; + struct mtk_icc_node *node; + + node = dst->data; + if (node->ep) { + pr_debug("sum_avg (%llu), max_peak (%llu)\n", + node->sum_avg, node->max_peak); + mtk_dvfsrc_send_request(src->provider->dev->parent, + MTK_DVFSRC_CMD_BW_REQUEST, + node->max_peak); + } + + return ret; +} + +static int emi_icc_remove(struct platform_device *pdev); +static int emi_icc_probe(struct platform_device *pdev) +{ + int ret; + const struct mtk_icc_desc *desc; + struct icc_node *node; + struct icc_onecell_data *data; + struct icc_provider *provider; + struct mtk_icc_node **mnodes; + size_t num_nodes, i, j; + + desc = of_device_get_match_data(&pdev->dev); + if (!desc) + return -EINVAL; + + mnodes = desc->nodes; + num_nodes = desc->num_nodes; + + provider = devm_kzalloc(&pdev->dev, sizeof(*provider), GFP_KERNEL); + if (!provider) + return -ENOMEM; + + data = devm_kcalloc(&pdev->dev, num_nodes, sizeof(*node), GFP_KERNEL); + if (!data) + return -ENOMEM; + + provider->dev = &pdev->dev; + provider->set = emi_icc_set; + provider->aggregate = emi_icc_aggregate; + provider->xlate = of_icc_xlate_onecell; + INIT_LIST_HEAD(&provider->nodes); + provider->data = data; + + ret = icc_provider_add(provider); + if (ret) { + dev_err(&pdev->dev, "error adding interconnect provider\n"); + return ret; + } + + for (i = 0; i < num_nodes; i++) { + node = icc_node_create(mnodes[i]->id); + if (IS_ERR(node)) { + ret = PTR_ERR(node); + goto err; + } + + node->name = mnodes[i]->name; + node->data = mnodes[i]; + icc_node_add(node, provider); + + dev_dbg(&pdev->dev, "registered node %s, num link: %d\n", + mnodes[i]->name, mnodes[i]->num_links); + + /* populate links */ + for (j = 0; j < mnodes[i]->num_links; j++) + icc_link_create(node, mnodes[i]->links[j]); + + data->nodes[i] = node; + } + data->num_nodes = num_nodes; + + platform_set_drvdata(pdev, provider); + + return 0; +err: + emi_icc_remove(pdev); + return ret; +} + +static int emi_icc_remove(struct platform_device *pdev) +{ + struct icc_provider *provider = platform_get_drvdata(pdev); + struct icc_node *n; + + list_for_each_entry(n, &provider->nodes, node_list) { + icc_node_del(n); + icc_node_destroy(n->id); + } + + return icc_provider_del(provider); +} + +static const struct of_device_id emi_icc_of_match[] = { + { .compatible = "mediatek,mt8183-emi", .data = &mt8183_icc }, + { }, +}; +MODULE_DEVICE_TABLE(of, emi_icc_of_match); + +static struct platform_driver emi_icc_driver = { + .probe = emi_icc_probe, + .remove = emi_icc_remove, + .driver = { + .name = "mediatek-emi-icc", + .of_match_table = emi_icc_of_match, + }, +}; + +static int __init mtk_emi_icc_init(void) +{ + return platform_driver_register(&emi_icc_driver); +} +subsys_initcall(mtk_emi_icc_init); + +static void __exit mtk_emi_icc_exit(void) +{ + platform_driver_unregister(&emi_icc_driver); +} +module_exit(mtk_emi_icc_exit); + +MODULE_AUTHOR("Henry Chen "); +MODULE_LICENSE("GPL v2");