From patchwork Wed Jun 1 11:21:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tinghan Shen X-Patchwork-Id: 12866769 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5FCD2645 for ; Wed, 1 Jun 2022 11:22:20 +0000 (UTC) X-UUID: 432b53617dc04d8dbd1be94df7adfb3c-20220601 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.5,REQID:fffaa3e9-abb4-4101-a970-403a9ff13232,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:2a19b09,CLOUDID:98648f14-f88c-475e-badf-d9ee54230b8f,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:0,BEC:nil X-UUID: 432b53617dc04d8dbd1be94df7adfb3c-20220601 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1619438567; Wed, 01 Jun 2022 19:22:05 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Wed, 1 Jun 2022 19:22:04 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Wed, 1 Jun 2022 19:22:04 +0800 From: Tinghan Shen To: Bjorn Andersson , Mathieu Poirier , Rob Herring , "Krzysztof Kozlowski" , Matthias Brugger , Lee Jones , Benson Leung , Guenter Roeck , Daisuke Nojiri , Sebastian Reichel , "Dustin L. Howett" , Tzung-Bi Shih , Tinghan Shen , "Gustavo A. R. Silva" , Prashant Malani , "Enric Balletbo i Serra" , Brian Norris CC: , , , , , , , Subject: [PATCH v1 05/15] remoteproc: mediatek: Add SCP core 1 driver for dual-core scp Date: Wed, 1 Jun 2022 19:21:51 +0800 Message-ID: <20220601112201.15510-6-tinghan.shen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220601112201.15510-1-tinghan.shen@mediatek.com> References: <20220601112201.15510-1-tinghan.shen@mediatek.com> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MTK: N MT8195 SCP is a dual-core processor. The mtk_scp.c driver only controls SCP core 0. This patch adds a basic driver to control the another core. Core 1 and core 0 of the SCP are housed in the same subsys.They see registers and memory in the same way. Core 1 of the SCP features its own set of core configuration registers, interrupt controller, timers, and DMAs. The rest of the peripherals in this subsystem are shared by core 0 and core 1. As for memory, core 1 has its own cache memory, and the SCP SRAM is shared by core 0 and core 1. Signed-off-by: Tinghan Shen --- drivers/remoteproc/Makefile | 1 + drivers/remoteproc/mtk_scp_dual.c | 97 +++++++++++++++++++++++++++++++ 2 files changed, 98 insertions(+) create mode 100644 drivers/remoteproc/mtk_scp_dual.c diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile index 5478c7cb9e07..84cb687d28da 100644 --- a/drivers/remoteproc/Makefile +++ b/drivers/remoteproc/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_IMX_REMOTEPROC) += imx_rproc.o obj-$(CONFIG_IMX_DSP_REMOTEPROC) += imx_dsp_rproc.o obj-$(CONFIG_INGENIC_VPU_RPROC) += ingenic_rproc.o obj-$(CONFIG_MTK_SCP) += mtk_scp.o mtk_scp_ipi.o +obj-$(CONFIG_MTK_SCP_DUALCORE) += mtk_scp_dual.o obj-$(CONFIG_OMAP_REMOTEPROC) += omap_remoteproc.o obj-$(CONFIG_WKUP_M3_RPROC) += wkup_m3_rproc.o obj-$(CONFIG_DA8XX_REMOTEPROC) += da8xx_remoteproc.o diff --git a/drivers/remoteproc/mtk_scp_dual.c b/drivers/remoteproc/mtk_scp_dual.c new file mode 100644 index 000000000000..7bc08d26f208 --- /dev/null +++ b/drivers/remoteproc/mtk_scp_dual.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2022 MediaTek Inc. + +#include +#include +#include +#include +#include +#include + +#include "mtk_common.h" +#include "remoteproc_internal.h" + +static const struct rproc_ops scp_ops; + +static int scp_dual_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct mtk_scp *scp; + struct rproc *rproc; + const char *fw_name = "scp-dual.img"; + int ret, i; + struct resource *res; + + ret = rproc_of_parse_firmware(dev, 0, &fw_name); + if (ret < 0 && ret != -EINVAL) + return ret; + + rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp)); + if (!rproc) { + dev_err(dev, "unable to allocate remoteproc\n"); + return -ENOMEM; + } + + scp = (struct mtk_scp *)rproc->priv; + scp->rproc = rproc; + scp->dev = dev; + platform_set_drvdata(pdev, scp); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram"); + scp->sram_base = devm_ioremap(dev, res->start, resource_size(res)); + if (IS_ERR(scp->sram_base)) + return dev_err_probe(dev, PTR_ERR(scp->sram_base), + "Failed to parse and map sram memory\n"); + + scp->sram_size = resource_size(res); + scp->sram_phys = res->start; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg"); + scp->reg_base = devm_ioremap(dev, res->start, resource_size(res)); + if (IS_ERR(scp->reg_base)) + return dev_err_probe(dev, PTR_ERR(scp->reg_base), + "Failed to parse and map cfg memory\n"); + + mutex_init(&scp->send_lock); + for (i = 0; i < SCP_IPI_MAX; i++) + mutex_init(&scp->ipi_desc[i].lock); + + init_waitqueue_head(&scp->run.wq); + init_waitqueue_head(&scp->ack_wq); + + return 0; +} + +static int scp_dual_remove(struct platform_device *pdev) +{ + struct mtk_scp *scp = platform_get_drvdata(pdev); + int i; + + for (i = 0; i < SCP_IPI_MAX; i++) + mutex_destroy(&scp->ipi_desc[i].lock); + mutex_destroy(&scp->send_lock); + + return 0; +} + +static const struct of_device_id mtk_scp_dual_of_match[] = { + { .compatible = "mediatek,mt8195-scp-dual" }, + {}, +}; +MODULE_DEVICE_TABLE(of, mtk_scp_dual_of_match); + +static struct platform_driver mtk_scp_dual_driver = { + .probe = scp_dual_probe, + .remove = scp_dual_remove, + .driver = { + .name = "mtk-scp-dual", + .of_match_table = mtk_scp_dual_of_match, + }, +}; + +module_platform_driver(mtk_scp_dual_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("MediaTek SCP dualcore control driver");