From patchwork Tue Apr 30 08:51:04 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 10923099 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CF19A933 for ; Tue, 30 Apr 2019 09:47:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BE64E286C4 for ; Tue, 30 Apr 2019 09:47:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B2A1728A94; Tue, 30 Apr 2019 09:47:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 17DBB286C4 for ; Tue, 30 Apr 2019 09:47:36 +0000 (UTC) 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=931zRlZ3hxLfrQaIfrplxHod8V6494ppKXBD7CpI8NU=; b=X16CARV17PuOet Aj6gepfrGAxv+33RHbdXmzikjiEkDvSvQkZE2bUCQuv/l3muIzz+ypUO2AjIDxi6WfmOtmP3AazCt USIq9unn/TeQt6HBKofBo9RPJuYrddVJyUfiFTUOJEEL1aYmNkujqXSADKsGynfzByN+sRb/6Uw+J nFFoQAzqJpvVcgfBhQvuvs4doqeiXFsOagILw+rluX++Vl5zhdv/LrE/OB1JQrjPQ6UPg/HiPUMxJ G4nI+0sFsFLBXjUxRBc7iq095ciLx5W7JOON80M5Vot2RgsQyK0MeopT+X+cdCtiNPAWv3SjrMEsK yEzU8Gu02LishehqYVEg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hLPMH-00025u-FR; Tue, 30 Apr 2019 09:47:29 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hLPKO-000050-TY; Tue, 30 Apr 2019 09:45:39 +0000 X-UUID: 16185863fe074d94a0c4161e015b0fa7-20190430 X-UUID: 16185863fe074d94a0c4161e015b0fa7-20190430 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 681525574; Tue, 30 Apr 2019 01:45:31 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 30 Apr 2019 02:45:29 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 30 Apr 2019 17:45:20 +0800 Received: from mtkslt205.mediatek.inc (10.21.15.75) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 30 Apr 2019 17:45:20 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd Subject: [RFC V2 10/11] interconnect: mediatek: Add mt8183 interconnect provider driver Date: Tue, 30 Apr 2019 16:51:04 +0800 Message-ID: <1556614265-12745-11-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1556614265-12745-1-git-send-email-henryc.chen@mediatek.com> References: <1556614265-12745-1-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-20190430_024533_210552_D38C7482 X-CRM114-Status: GOOD ( 18.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: James Liao , Weiyi Lu , Nicolas Boichat , linux-kernel@vger.kernel.org, Henry Chen , Fan Chen , devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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 | 5 + drivers/interconnect/mediatek/mt8183.c | 223 +++++++++++++++++++++++++++++++++ 5 files changed, 243 insertions(+) create mode 100644 drivers/interconnect/mediatek/Kconfig create mode 100644 drivers/interconnect/mediatek/Makefile create mode 100644 drivers/interconnect/mediatek/mt8183.c diff --git a/drivers/interconnect/Kconfig b/drivers/interconnect/Kconfig index 07a8276..ac41ea6 100644 --- a/drivers/interconnect/Kconfig +++ b/drivers/interconnect/Kconfig @@ -11,5 +11,6 @@ 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 28f2ab0..253f24a3 100644 --- a/drivers/interconnect/Makefile +++ b/drivers/interconnect/Makefile @@ -4,3 +4,4 @@ icc-core-objs := core.o obj-$(CONFIG_INTERCONNECT) += icc-core.o obj-$(CONFIG_INTERCONNECT_QCOM) += qcom/ +obj-$(CONFIG_INTERCONNECT_MTK) += mediatek/ diff --git a/drivers/interconnect/mediatek/Kconfig b/drivers/interconnect/mediatek/Kconfig new file mode 100644 index 0000000..0686494 --- /dev/null +++ b/drivers/interconnect/mediatek/Kconfig @@ -0,0 +1,13 @@ +config INTERCONNECT_MTK + bool "Mediatek Network-on-Chip interconnect drivers" + depends on ARCH_MEDIATEK + help + Support for Mediatek's Network-on-Chip interconnect hardware. + +config INTERCONNECT_MTK_MT8183 + tristate "Mediatek MT8183 interconnect driver" + depends on INTERCONNECT_MTK + depends on (MTK_DVFSRC && OF) + help + This is a driver for the Mediatek Network-on-Chip on mt8183-based + platforms. diff --git a/drivers/interconnect/mediatek/Makefile b/drivers/interconnect/mediatek/Makefile new file mode 100644 index 0000000..a39ceee --- /dev/null +++ b/drivers/interconnect/mediatek/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + +mtk-mt8183-objs := mt8183.o + +obj-$(CONFIG_INTERCONNECT_MTK_MT8183) += mtk-mt8183.o \ No newline at end of file diff --git a/drivers/interconnect/mediatek/mt8183.c b/drivers/interconnect/mediatek/mt8183.c new file mode 100644 index 0000000..38ffe0b --- /dev/null +++ b/drivers/interconnect/mediatek/mt8183.c @@ -0,0 +1,223 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019, The Linux Foundation. All rights reserved. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MT8183_MAX_LINKS 6 + +/** + * 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 requests + * @max_peak: current max aggregate value of all peak bw 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, _numlinks, ...) \ + static struct mtk_icc_node _name = { \ + .name = #_name, \ + .id = _id, \ + .buswidth = _buswidth, \ + .ep = _ep, \ + .num_links = _numlinks, \ + .links = { __VA_ARGS__ }, \ +} + +DEFINE_MNODE(ddr_emi, SLAVE_DDR_EMI, 1024, 1, 0, 0); +DEFINE_MNODE(mcusys, MASTER_MCUSYS, 256, 0, 1, SLAVE_DDR_EMI); +DEFINE_MNODE(gpu, MASTER_GPU, 256, 0, 1, SLAVE_DDR_EMI); +DEFINE_MNODE(mmsys, MASTER_MMSYS, 256, 0, 1, SLAVE_DDR_EMI); +DEFINE_MNODE(mm_vpu, MASTER_MM_VPU, 128, 0, 1, MASTER_MMSYS); +DEFINE_MNODE(mm_disp, MASTER_MM_DISP, 128, 0, 1, MASTER_MMSYS); +DEFINE_MNODE(mm_vdec, MASTER_MM_VDEC, 128, 0, 1, MASTER_MMSYS); +DEFINE_MNODE(mm_venc, MASTER_MM_VENC, 128, 0, 1, MASTER_MMSYS); +DEFINE_MNODE(mm_cam, MASTER_MM_CAM, 128, 0, 1, MASTER_MMSYS); +DEFINE_MNODE(mm_img, MASTER_MM_IMG, 128, 0, 1, MASTER_MMSYS); +DEFINE_MNODE(mm_mdp, MASTER_MM_MDP, 128, 0, 1, MASTER_MMSYS); + +static struct mtk_icc_node *mt8183_icc_nodes[] = { + &ddr_emi, + &mcusys, + &gpu, + &mmsys, + &mm_vpu, + &mm_disp, + &mm_vdec, + &mm_venc, + &mm_cam, + &mm_img, + &mm_mdp, +}; + +static struct mtk_icc_desc mt8183_icc = { + .nodes = mt8183_icc_nodes, + .num_nodes = ARRAY_SIZE(mt8183_icc_nodes), +}; + +static int mt8183_icc_aggregate(struct icc_node *node, 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 = max_t(u32, *agg_peak, peak_bw); + + in->sum_avg = *agg_avg; + in->max_peak = *agg_peak; + + return 0; +} + +static int mt8183_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 mt8183_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 = mt8183_icc_set; + provider->aggregate = mt8183_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 ret; +err: + list_for_each_entry(node, &provider->nodes, node_list) { + icc_node_del(node); + icc_node_destroy(node->id); + } + + icc_provider_del(provider); + return ret; +} + +static int mt8183_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 mt8183_icc_of_match[] = { + { .compatible = "mediatek,mt8183-emi-icc", .data = &mt8183_icc }, + { }, +}; +MODULE_DEVICE_TABLE(of, mt8183_icc_of_match); + +static struct platform_driver mt8183_icc_driver = { + .probe = mt8183_icc_probe, + .remove = mt8183_icc_remove, + .driver = { + .name = "mt8183-emi-icc", + .of_match_table = mt8183_icc_of_match, + }, +}; +module_platform_driver(mt8183_icc_driver); + +MODULE_AUTHOR("Henry Chen "); +MODULE_LICENSE("GPL v2");