From patchwork Mon Sep 14 03:04:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 11772743 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 494AA139F for ; Mon, 14 Sep 2020 03:14:24 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 08421208C7 for ; Mon, 14 Sep 2020 03:14:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="V+BgQq7q"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="uLH4nsLh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 08421208C7 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-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=k7lVMJ2RLCVUzhYFb6on7loflJbf2M+PJB/3DYTYQaU=; b=V+BgQq7qCKFnj00Gh7A3LiPrv COd5gz6sNTmDtFjUL+bR3DbJ7DKRfIGlgxL/QDKq76VpKT8T7TDffjwQPARGkjTNgOkqh6XW4f8mj qjtYyy9Nj6twECp59IfI8hz/pufR3mf6Kh4HnQNs+T6H908ggbZGCr1ARo4I3ItPYshDHbNfqKvvb h72X0sGJ7G4Jy5E4/7AoVYRDjpR/CpEK8QD3ixJxj/uYLX2MEyjV7rSa+yrLA+HNLEgq6IGUrYLzu yukHqSRa5g8ct2VWUmvS72GfvpqV7LY3kLfVqDzUqdWgFUosLZrwpmp647wvicgix/qT3zIdj4k6R ChdeVZJDg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHeuy-0003HQ-Ot; Mon, 14 Sep 2020 03:12:36 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHeuQ-00033k-Ek; Mon, 14 Sep 2020 03:12:04 +0000 X-UUID: 6f384c765b1f41f484dbb38c73c32fbb-20200913 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=nvQRJm4sVECHKjdCBLZvn1Ku1AJv7srF1NJ0jCgZY1Q=; b=uLH4nsLhWgORKbqWBzSNdPQUB+GAxOHLiytR18Tpcu2BwWrVlTLq6AeIClgJkGLWcYf4Zyjsa81BIlXeEh5+QE1rTyOKKnonq2ooQnr60Xs2FzwGts/ku6lwm6gjwnVfeaAKaxnr+GJwaAe5PBVCUYiAAQSCuT4G+KjhrTEw8oI=; X-UUID: 6f384c765b1f41f484dbb38c73c32fbb-20200913 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1335384962; Sun, 13 Sep 2020 19:11:53 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 13 Sep 2020 20:04:50 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 14 Sep 2020 11:04:49 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 14 Sep 2020 11:04:49 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case , Mark Brown Subject: [PATCH V5 11/17] interconnect: mediatek: Add interconnect provider driver Date: Mon, 14 Sep 2020 11:04:38 +0800 Message-ID: <1600052684-21198-12-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1600052684-21198-1-git-send-email-henryc.chen@mediatek.com> References: <1600052684-21198-1-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-20200913_231202_711502_33C0A658 X-CRM114-Status: GOOD ( 20.77 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.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_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -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 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@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 , 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-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Introduce Mediatek MT6873/MT8183/MT8192 specific provider driver using the interconnect framework. ICC provider ICC Nodes ---- ---- --------- |CPU | |--- |VPU | ----- | |----- ---- | ---- |DRAM |--|DRAM | ---- | ---- | |--|scheduler|----- |GPU | |--- |DISP| | |--|(EMI) | ---- | ---- | |--| | ----- | ---- ----- | |----- |MMSYS|--|--- |VDEC| --------- ----- | ---- /|\ | ---- |change DRAM freq |--- |VENC| ---------- | ---- | DVFSR | | | | | ---- ---------- |--- |IMG | | ---- | ---- |--- |CAM | ---- 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 | 330 ++++++++++++++++++++++++++++++++ 5 files changed, 348 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 5b7204e..e939f5a 100644 --- a/drivers/interconnect/Kconfig +++ b/drivers/interconnect/Kconfig @@ -13,5 +13,6 @@ if INTERCONNECT source "drivers/interconnect/imx/Kconfig" source "drivers/interconnect/qcom/Kconfig" +source "drivers/interconnect/mediatek/Kconfig" endif diff --git a/drivers/interconnect/Makefile b/drivers/interconnect/Makefile index 4825c28..6f4b88a 100644 --- a/drivers/interconnect/Makefile +++ b/drivers/interconnect/Makefile @@ -6,3 +6,4 @@ icc-core-objs := core.o obj-$(CONFIG_INTERCONNECT) += icc-core.o obj-$(CONFIG_INTERCONNECT_IMX) += imx/ 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..9670077 --- /dev/null +++ b/drivers/interconnect/mediatek/mtk-emi.c @@ -0,0 +1,330 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2020, 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, + MASTER_VPUSYS, + MASTER_VPU_PORT_0, + MASTER_VPU_PORT_1, + MASTER_MDLASYS, + MASTER_MDLA_PORT_0, + MASTER_UFS, + MASTER_PCIE, + MASTER_USB, + MASTER_WIFI, + MASTER_BT, + MASTER_NETSYS, + MASTER_DBGIF, + + SLAVE_HRT_DDR_EMI, + MASTER_HRT_MMSYS, + MASTER_HRT_MM_DISP, + MASTER_HRT_MM_VDEC, + MASTER_HRT_MM_VENC, + MASTER_HRT_MM_CAM, + MASTER_HRT_MM_IMG, + MASTER_HRT_MM_MDP, + MASTER_HRT_DBGIF, +}; + +#define MT8183_MAX_LINKS 1 + +/** + * struct mtk_icc_node - Mediatek specific interconnect nodes + * @name: the node name used in debugfs + * @ep : the type of this endpoint + * @id: a unique node identifier + * @links: an array of nodes where we can go next while traversing + * @num_links: the total number of @links + * @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; + int ep; + u16 id; + u16 links[MT8183_MAX_LINKS]; + u16 num_links; + u64 sum_avg; + u64 max_peak; +}; + +struct mtk_icc_desc { + struct mtk_icc_node **nodes; + size_t num_nodes; +}; + +#define DEFINE_MNODE(_name, _id, _ep, ...) \ + static struct mtk_icc_node _name = { \ + .name = #_name, \ + .id = _id, \ + .ep = _ep, \ + .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })), \ + .links = { __VA_ARGS__ }, \ +} + +DEFINE_MNODE(ddr_emi, SLAVE_DDR_EMI, 1); +DEFINE_MNODE(mcusys, MASTER_MCUSYS, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(gpu, MASTER_GPUSYS, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(mmsys, MASTER_MMSYS, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(mm_vpu, MASTER_MM_VPU, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_disp, MASTER_MM_DISP, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_vdec, MASTER_MM_VDEC, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_venc, MASTER_MM_VENC, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_cam, MASTER_MM_CAM, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_img, MASTER_MM_IMG, 0, MASTER_MMSYS); +DEFINE_MNODE(mm_mdp, MASTER_MM_MDP, 0, MASTER_MMSYS); +DEFINE_MNODE(vpusys, MASTER_VPUSYS, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(vpu_port_0, MASTER_VPU_PORT_0, 0, MASTER_VPUSYS); +DEFINE_MNODE(vpu_port_1, MASTER_VPU_PORT_1, 0, MASTER_VPUSYS); +DEFINE_MNODE(mdlasys, MASTER_MDLASYS, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(mdla_port_0, MASTER_MDLA_PORT_0, 0, MASTER_MDLASYS); +DEFINE_MNODE(ufs, MASTER_UFS, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(pcie, MASTER_PCIE, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(usb, MASTER_USB, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(wifi, MASTER_WIFI, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(bt, MASTER_BT, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(netsys, MASTER_NETSYS, 0, SLAVE_DDR_EMI); +DEFINE_MNODE(dbgif, MASTER_DBGIF, 0, SLAVE_DDR_EMI); + +DEFINE_MNODE(hrt_ddr_emi, SLAVE_HRT_DDR_EMI, 2); +DEFINE_MNODE(hrt_mmsys, MASTER_HRT_MMSYS, 0, SLAVE_HRT_DDR_EMI); +DEFINE_MNODE(hrt_mm_disp, MASTER_HRT_MM_DISP, 0, MASTER_HRT_MMSYS); +DEFINE_MNODE(hrt_mm_vdec, MASTER_HRT_MM_VDEC, 0, MASTER_HRT_MMSYS); +DEFINE_MNODE(hrt_mm_venc, MASTER_HRT_MM_VENC, 0, MASTER_HRT_MMSYS); +DEFINE_MNODE(hrt_mm_cam, MASTER_HRT_MM_CAM, 0, MASTER_HRT_MMSYS); +DEFINE_MNODE(hrt_mm_img, MASTER_HRT_MM_IMG, 0, MASTER_HRT_MMSYS); +DEFINE_MNODE(hrt_mm_mdp, MASTER_HRT_MM_MDP, 0, MASTER_HRT_MMSYS); +DEFINE_MNODE(hrt_dbgif, MASTER_HRT_DBGIF, 0, SLAVE_HRT_DDR_EMI); + +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 const struct mtk_icc_desc mt8183_icc = { + .nodes = mt8183_icc_nodes, + .num_nodes = ARRAY_SIZE(mt8183_icc_nodes), +}; + +static struct mtk_icc_node *mt6873_icc_nodes[] = { + [MT6873_SLAVE_DDR_EMI] = &ddr_emi, + [MT6873_MASTER_MCUSYS] = &mcusys, + [MT6873_MASTER_GPUSYS] = &gpu, + [MT6873_MASTER_MMSYS] = &mmsys, + [MT6873_MASTER_MM_VPU] = &mm_vpu, + [MT6873_MASTER_MM_DISP] = &mm_disp, + [MT6873_MASTER_MM_VDEC] = &mm_vdec, + [MT6873_MASTER_MM_VENC] = &mm_venc, + [MT6873_MASTER_MM_CAM] = &mm_cam, + [MT6873_MASTER_MM_IMG] = &mm_img, + [MT6873_MASTER_MM_MDP] = &mm_mdp, + [MT6873_MASTER_VPUSYS] = &vpusys, + [MT6873_MASTER_VPU_0] = &vpu_port_0, + [MT6873_MASTER_VPU_1] = &vpu_port_1, + [MT6873_MASTER_MDLASYS] = &mdlasys, + [MT6873_MASTER_MDLA_0] = &mdla_port_0, + [MT6873_MASTER_UFS] = &ufs, + [MT6873_MASTER_PCIE] = &pcie, + [MT6873_MASTER_USB] = &usb, + [MT6873_MASTER_WIFI] = &wifi, + [MT6873_MASTER_BT] = &bt, + [MT6873_MASTER_NETSYS] = &netsys, + [MT6873_MASTER_DBGIF] = &dbgif, + + [MT6873_SLAVE_HRT_DDR_EMI] = &hrt_ddr_emi, + [MT6873_MASTER_HRT_MMSYS] = &hrt_mmsys, + [MT6873_MASTER_HRT_MM_DISP] = &hrt_mm_disp, + [MT6873_MASTER_HRT_MM_VDEC] = &hrt_mm_vdec, + [MT6873_MASTER_HRT_MM_VENC] = &hrt_mm_venc, + [MT6873_MASTER_HRT_MM_CAM] = &hrt_mm_cam, + [MT6873_MASTER_HRT_MM_IMG] = &hrt_mm_img, + [MT6873_MASTER_HRT_MM_MDP] = &hrt_mm_mdp, + [MT6873_MASTER_HRT_DBGIF] = &hrt_dbgif, +}; + +static struct mtk_icc_desc mt6873_icc = { + .nodes = mt6873_icc_nodes, + .num_nodes = ARRAY_SIZE(mt6873_icc_nodes), +}; + +static const struct of_device_id emi_icc_of_match[] = { + { .compatible = "mediatek,mt8183-dvfsrc", .data = &mt8183_icc }, + { .compatible = "mediatek,mt8192-dvfsrc", .data = &mt6873_icc }, + { .compatible = "mediatek,mt6873-dvfsrc", .data = &mt6873_icc }, + { }, +}; +MODULE_DEVICE_TABLE(of, emi_icc_of_match); + +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 = max_t(u32, *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 == 1) { + mtk_dvfsrc_send_request(src->provider->dev, + MTK_DVFSRC_CMD_PEAK_BW_REQUEST, + node->max_peak); + mtk_dvfsrc_send_request(src->provider->dev, + MTK_DVFSRC_CMD_BW_REQUEST, + node->sum_avg); + } else if (node->ep == 2) { + mtk_dvfsrc_send_request(src->provider->dev, + MTK_DVFSRC_CMD_HRTBW_REQUEST, + node->sum_avg); + } + + return ret; +} + +static int emi_icc_remove(struct platform_device *pdev); +static int emi_icc_probe(struct platform_device *pdev) +{ + const struct of_device_id *match; + const struct mtk_icc_desc *desc; + struct device *dev = &pdev->dev; + struct icc_node *node; + struct icc_onecell_data *data; + struct icc_provider *provider; + struct mtk_icc_node **mnodes; + size_t num_nodes, i, j; + int ret; + + match = of_match_node(emi_icc_of_match, dev->parent->of_node); + + if (!match) { + dev_err(dev, "invalid compatible string\n"); + return -ENODEV; + } + + desc = match->data; + mnodes = desc->nodes; + num_nodes = desc->num_nodes; + + provider = devm_kzalloc(dev, sizeof(*provider), GFP_KERNEL); + if (!provider) + return -ENOMEM; + + data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes), + GFP_KERNEL); + if (!data) + return -ENOMEM; + + provider->dev = pdev->dev.parent; + 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); + + 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: + icc_nodes_remove(provider); + return ret; +} + +static int emi_icc_remove(struct platform_device *pdev) +{ + struct icc_provider *provider = platform_get_drvdata(pdev); + + icc_nodes_remove(provider); + return icc_provider_del(provider); +} + +static struct platform_driver emi_icc_driver = { + .probe = emi_icc_probe, + .remove = emi_icc_remove, + .driver = { + .name = "mediatek-emi-icc", + }, +}; + +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");