From patchwork Fri Dec 22 08:07:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William-tw Lin X-Patchwork-Id: 757579 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) (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 28F1AC154; Fri, 22 Dec 2023 08:07:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="aBcGlFix" X-UUID: 30275300a0a111eeba30773df0976c77-20231222 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=ZM2jh6gBPjamkd/7fNfKwSuBLsOwb+NxJrmTHzjoqKA=; b=aBcGlFixnvPBWcafy2P0LsdMb90vL+wBBAYsGHtZ4o6sSuqXYE1nxkJpzlyNduHIbri/BHNDzCxHlt6ZAFeo4qqMDe2WJZXxOG3Rx6eNJHyv6Ek90gJ+GA+mD8cb0JPZnD+RLElCZCb3+KSL8hKZcthvli8qrFdhENUWKdn1lhw=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.35, REQID:9f8d0bb2-6a72-4d58-b11f-c996c9fc5353, IP:0, U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:5d391d7, CLOUDID:2830602e-1ab8-4133-9780-81938111c800, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO, DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: 30275300a0a111eeba30773df0976c77-20231222 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 404698019; Fri, 22 Dec 2023 16:07:45 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by MTKMBS14N1.mediatek.inc (172.21.101.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Fri, 22 Dec 2023 16:07:43 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 22 Dec 2023 16:07:43 +0800 From: William-tw Lin To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Srinivas Kandagatla CC: , , , , William-tw Lin Subject: [PATCH v4 2/3] soc: mediatek: mtk-socinfo: Add driver for getting chip information Date: Fri, 22 Dec 2023 16:07:38 +0800 Message-ID: <20231222080739.21706-3-william-tw.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20231222080739.21706-1-william-tw.lin@mediatek.com> References: <20231222080739.21706-1-william-tw.lin@mediatek.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--6.082600-8.000000 X-TMASE-MatchedRID: PsyXYoMXngg9S3IiQd+eNeEbUg4xvs+wK2i9pofGVSvvSbc8qoHu0dnf JrUSEbFD0ixIj1RfazktZ0CLG0VuhqPKM9uZBgjQuIwLnB3Aqp2WHGENdT+VP8SiwizsgluQaqw IoaIdvpFgTxTvlGH/Ws2cSlJJpVq0R+CktnkqPjQzvWHRIxWXwu3+iQEtoSj4X0jyhj9/Qq4SEQ gQCsPiVEcN36UB4MN7+ewtXJwydIBZT98H9cWYnAwfhKwa9GwDD+LwVja9M4FUjspoiX02F9qS7 v+0q636xMujmXyGahWAMuqetGVetksDkkP3zIjq3QfwsVk0UbuGrPnef/I+eqJRJRlk2PQKDK72 FPdlXZ2kuBsRdnplyYg87FTk1SIhw2tMTSg0x74= X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--6.082600-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 69E642C939B306DDCB0BBA335FD881180D27B1CD0ECB450C622BEEB4FDE3419B2000:8 Add driver for socinfo retrieval. This patch includes the following: 1. mtk-socinfo driver for chip info retrieval 2. Related changes to Makefile and Kconfig Signed-off-by: William-tw Lin --- drivers/soc/mediatek/Kconfig | 9 ++ drivers/soc/mediatek/Makefile | 1 + drivers/soc/mediatek/mtk-socinfo.c | 186 +++++++++++++++++++++++++++++ 3 files changed, 196 insertions(+) create mode 100644 drivers/soc/mediatek/mtk-socinfo.c diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig index 0810b5b0c688..50c664b65f4d 100644 --- a/drivers/soc/mediatek/Kconfig +++ b/drivers/soc/mediatek/Kconfig @@ -68,4 +68,13 @@ config MTK_SVS chip process corner, temperatures and other factors. Then DVFS driver could apply SVS bank voltage to PMIC/Buck. +config MTK_SOCINFO + tristate "MediaTek SoC Information" + default y + depends on NVMEM_MTK_EFUSE + help + The MediaTek SoC Information (mtk-socinfo) driver provides + information about the SoC to the userspace including the + manufacturer name, marketing name and soc name. + endmenu diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile index 9d3ce7878c5c..6830512848fd 100644 --- a/drivers/soc/mediatek/Makefile +++ b/drivers/soc/mediatek/Makefile @@ -7,3 +7,4 @@ obj-$(CONFIG_MTK_REGULATOR_COUPLER) += mtk-regulator-coupler.o obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o obj-$(CONFIG_MTK_MMSYS) += mtk-mutex.o obj-$(CONFIG_MTK_SVS) += mtk-svs.o +obj-$(CONFIG_MTK_SOCINFO) += mtk-socinfo.o diff --git a/drivers/soc/mediatek/mtk-socinfo.c b/drivers/soc/mediatek/mtk-socinfo.c new file mode 100644 index 000000000000..0094f43e1e08 --- /dev/null +++ b/drivers/soc/mediatek/mtk-socinfo.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2023 MediaTek Inc. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MTK_SOCINFO_ENTRY(_soc_name, _segment_name, _marketing_name, _cell_data1, _cell_data2) {\ + .soc_name = _soc_name, \ + .segment_name = _segment_name, \ + .marketing_name = _marketing_name, \ + .cell_data = {_cell_data1, _cell_data2} \ +} +#define CELL_NOT_USED (0xFFFFFFFF) +#define MAX_CELLS (2) + +struct mtk_socinfo { + struct device *dev; + struct name_data *name_data; + struct socinfo_data *socinfo_data; + struct soc_device *soc_dev; +}; + +struct socinfo_data { + char *soc_name; + char *segment_name; + char *marketing_name; + u32 cell_data[MAX_CELLS]; +}; + +static const char *cell_names[MAX_CELLS] = {"socinfo-data1", "socinfo-data2"}; + +static struct socinfo_data socinfo_data_table[] = { + MTK_SOCINFO_ENTRY("MT8173", "MT8173V/AC", "MT8173", 0x6CA20004, 0x10000000), + MTK_SOCINFO_ENTRY("MT8183", "MT8183V/AZA", "Kompanio 500", 0x00010043, 0x00000840), + MTK_SOCINFO_ENTRY("MT8186", "MT8186GV/AZA", "Kompanio 520", 0x81861001, CELL_NOT_USED), + MTK_SOCINFO_ENTRY("MT8186T", "MT8186TV/AZA", "Kompanio 528", 0x81862001, CELL_NOT_USED), + MTK_SOCINFO_ENTRY("MT8188", "MT8188GV/AZA", "Kompanio 830", 0x81880000, 0x00000010), + MTK_SOCINFO_ENTRY("MT8188", "MT8188GV/HZA", "Kompanio 830", 0x81880000, 0x00000011), + MTK_SOCINFO_ENTRY("MT8192", "MT8192V/AZA", "Kompanio 820", 0x00001100, 0x00040080), + MTK_SOCINFO_ENTRY("MT8192T", "MT8192V/ATZA", "Kompanio 828", 0x00000100, 0x000400C0), + MTK_SOCINFO_ENTRY("MT8195", "MT8195GV/EZA", "Kompanio 1200", 0x81950300, CELL_NOT_USED), + MTK_SOCINFO_ENTRY("MT8195", "MT8195GV/EHZA", "Kompanio 1200", 0x81950304, CELL_NOT_USED), + MTK_SOCINFO_ENTRY("MT8195", "MT8195TV/EZA", "Kompanio 1380", 0x81950400, CELL_NOT_USED), + MTK_SOCINFO_ENTRY("MT8195", "MT8195TV/EHZA", "Kompanio 1380", 0x81950404, CELL_NOT_USED), +}; + +static int mtk_socinfo_create_socinfo_node(struct mtk_socinfo *mtk_socinfop) +{ + struct soc_device_attribute *attrs; + static char machine[30] = {0}; + static const char *soc_manufacturer = "MediaTek"; + + attrs = devm_kzalloc(mtk_socinfop->dev, sizeof(*attrs), GFP_KERNEL); + if (!attrs) + return -ENOMEM; + + snprintf(machine, sizeof(machine), "%s (%s)", mtk_socinfop->socinfo_data->marketing_name, + mtk_socinfop->socinfo_data->soc_name); + attrs->family = soc_manufacturer; + attrs->machine = machine; + + mtk_socinfop->soc_dev = soc_device_register(attrs); + if (IS_ERR(mtk_socinfop->soc_dev)) + return PTR_ERR(mtk_socinfop->soc_dev); + + dev_info(mtk_socinfop->dev, "%s %s SoC detected.\n", soc_manufacturer, attrs->machine); + return 0; +} + +static u32 mtk_socinfo_read_cell(struct device *dev, const char *name) +{ + struct nvmem_device *nvmemp; + struct device_node *np = dev->of_node; + u32 offset; + u32 cell_val = CELL_NOT_USED; + + nvmemp = devm_nvmem_device_get(dev, "mtk-efuse0"); + if (IS_ERR(nvmemp)) + goto out; + + np = of_find_node_by_name(NULL, name); + if (!np) + goto out; + + if (of_property_read_u32_index(np, "reg", 0, &offset)) + goto out; + + nvmem_device_read(nvmemp, offset, sizeof(cell_val), &cell_val); + + nvmem_device_put(nvmemp); + +out: + return cell_val; +} + +static int mtk_socinfo_get_socinfo_data(struct mtk_socinfo *mtk_socinfop) +{ + unsigned int i, j; + unsigned int num_cell_data = 0; + u32 cell_data[MAX_CELLS] = {0}; + bool match_socinfo; + int match_socinfo_index = -1; + + for (i = 0; i < MAX_CELLS; i++) { + cell_data[i] = mtk_socinfo_read_cell(mtk_socinfop->dev, cell_names[i]); + if (cell_data[i] != CELL_NOT_USED) + num_cell_data++; + else + break; + } + + if (!num_cell_data) + return -ENOENT; + + for (i = 0; i < ARRAY_SIZE(socinfo_data_table); i++) { + match_socinfo = true; + for (j = 0; j < num_cell_data; j++) { + if (cell_data[j] != socinfo_data_table[i].cell_data[j]) { + match_socinfo = false; + break; + } + } + if (match_socinfo) { + mtk_socinfop->socinfo_data = &(socinfo_data_table[i]); + match_socinfo_index = i; + break; + } + } + + return match_socinfo_index >= 0 ? match_socinfo_index : -ENOENT; +} + +static int mtk_socinfo_probe(struct platform_device *pdev) +{ + struct mtk_socinfo *mtk_socinfop; + int ret; + + mtk_socinfop = devm_kzalloc(&pdev->dev, sizeof(*mtk_socinfop), GFP_KERNEL); + if (!mtk_socinfop) + return -ENOMEM; + + mtk_socinfop->dev = &pdev->dev; + + ret = mtk_socinfo_get_socinfo_data(mtk_socinfop); + if (ret < 0) + return dev_err_probe(mtk_socinfop->dev, ret, "Failed to get socinfo data\n"); + + ret = mtk_socinfo_create_socinfo_node(mtk_socinfop); + if (ret) + return dev_err_probe(mtk_socinfop->dev, ret, "Cannot create node\n"); + + platform_set_drvdata(pdev, mtk_socinfop); + return 0; +} + +static void mtk_socinfo_remove(struct platform_device *pdev) +{ + struct mtk_socinfo *mtk_socinfop = platform_get_drvdata(pdev); + + soc_device_unregister(mtk_socinfop->soc_dev); +} + +static struct platform_driver mtk_socinfo = { + .probe = mtk_socinfo_probe, + .remove_new = mtk_socinfo_remove, + .driver = { + .name = "mtk-socinfo", + }, +}; +module_platform_driver(mtk_socinfo); + +MODULE_AUTHOR("William-TW LIN "); +MODULE_DESCRIPTION("MediaTek socinfo driver"); +MODULE_LICENSE("GPL");