[V6,08/13] interconnect: mediatek: Add interconnect provider driver

Message ID	1608790134-27425-9-git-send-email-henryc.chen@mediatek.com
State	New
Headers	show Return-Path: <devicetree-owner@kernel.org> From: Henry Chen <henryc.chen@mediatek.com> To: Georgi Djakov <georgi.djakov@linaro.org>, Rob Herring <robh+dt@kernel.org>, Matthias Brugger <matthias.bgg@gmail.com>, Stephen Boyd <swboyd@chromium.org>, Ryan Case <ryandcase@chromium.org>, Mark Brown <broonie@kernel.org> CC: Mark Rutland <mark.rutland@arm.com>, Nicolas Boichat <drinkcat@google.com>, Fan Chen <fan.chen@mediatek.com>, James Liao <jamesjj.liao@mediatek.com>, Arvin Wang <arvin.wang@mediatek.com>, <devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-mediatek@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>, Henry Chen <henryc.chen@mediatek.com> Subject: [PATCH V6 08/13] interconnect: mediatek: Add interconnect provider driver Date: Thu, 24 Dec 2020 14:08:49 +0800 Message-ID: <1608790134-27425-9-git-send-email-henryc.chen@mediatek.com> In-Reply-To: <1608790134-27425-1-git-send-email-henryc.chen@mediatek.com> References: <1608790134-27425-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk
Series	Add driver for dvfsrc, support for active state of scpsys \| expand [V6,00/13] Add driver for dvfsrc, support for active state of scpsys [V6,03/13] soc: mediatek: add driver for dvfsrc support [V6,04/13] arm64: dts: mt8183: add dvfsrc related nodes [V6,06/13] dt-bindings: interconnect: add MT8183 interconnect dt-bindings [V6,08/13] interconnect: mediatek: Add interconnect provider driver

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 d203520..0643a24 100644 --- a/drivers/interconnect/Makefile +++ b/drivers/interconnect/Makefile @@ -6,3 +6,4 @@ icc-core-objs := core.o bulk.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 <linux/device.h> +#include <linux/interconnect-provider.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/soc/mediatek/mtk_dvfsrc.h> +#include <dt-bindings/interconnect/mtk,mt8183-emi.h> +#include <dt-bindings/interconnect/mtk,mt6873-emi.h> + +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 <henryc.chen@mediatek.com>"); +MODULE_LICENSE("GPL v2");

[V6,08/13] interconnect: mediatek: Add interconnect provider driver

Commit Message

Comments

Patch