From patchwork Fri Sep 15 15:26:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?V2lsbGlhbS10dyBMaW4gKOael+m8juW0tCk=?= X-Patchwork-Id: 13387183 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5301EEED60E for ; Fri, 15 Sep 2023 15:27:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ofnThpgofCeEpSSPYWjuOfHoqiHMi2CCbhwwb+ngeLM=; b=hIWY9j08yFfGfz A3WsoBHmN5pjYH3oabFpPE8GjozvkFolLqZn1Ht36Jd7j0Pdti+BE8TDly6MmBdo2k9NurGZW8JYf qp9hkymkzGKZs9VRGitz2IeOv/UzmBOp2ivi8otkSktJ2mweIVh3CVggvTLagLUDOqAmCw4vI/z+T tB2zygSAnUo6iZqD7CM34JEXKv4Qlds0t5YRAvFffza/pDGy+MXAeHCzAvIZj2XD+unHXMD7oCAuu mL632rIjA4BD6kxl7cjcsn/uvcFaSmCwTLwEjCIPX5NZV38tMm1zEzU2AqzcEgSsXH5ucuXWP56sX GWThH7yf7FVHZpmKXjfA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qhAiM-00AyuL-13; Fri, 15 Sep 2023 15:26:38 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qhAiJ-00Ays9-0E; Fri, 15 Sep 2023 15:26:36 +0000 X-UUID: 3c92b4d453dc11ee9b7791016c24628a-20230915 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=utkzDn10EYvwp9e6WhYM1iztZKUB3fFaNCYAgHIa5iU=; b=gzpun3vFjJ2TMfOFB07xwNwvKP/9mlg2PW6WCzdIhqJh9/XRf8aYJQyQNHywK/ealPKgsKkOVpFSwApoFoPeRtIvfYzIzwDIj0i1asMnmDlR6+tnhfKN13sKB7bVZVMtjj7r2R01iPS+WPMVOYKTFJtamRz6XQ9XUSx2SiET4cE=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.31,REQID:845a7ae8-869e-43d8-a2c6-fc22542d58dd,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:0ad78a4,CLOUDID:7ae313c3-1e57-4345-9d31-31ad9818b39f,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: 3c92b4d453dc11ee9b7791016c24628a-20230915 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 658879013; Fri, 15 Sep 2023 08:26:26 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Fri, 15 Sep 2023 23:26:23 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 15 Sep 2023 23:26:23 +0800 From: William-tw Lin To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Kevin Hilman CC: , , , , , William-tw Lin Subject: [PATCH v2 2/3] soc: mediatek: mtk-socinfo: Add driver for getting chip information Date: Fri, 15 Sep 2023 23:26:06 +0800 Message-ID: <20230915152607.18116-3-william-tw.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230915152607.18116-1-william-tw.lin@mediatek.com> References: <20230915152607.18116-1-william-tw.lin@mediatek.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230915_082635_115885_1A2D3105 X-CRM114-Status: GOOD ( 22.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 | 166 +++++++++++++++++++++++++++++ 3 files changed, 176 insertions(+) create mode 100644 drivers/soc/mediatek/mtk-socinfo.c diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig index a88cf04fc803..5746d3b4c67d 100644 --- a/drivers/soc/mediatek/Kconfig +++ b/drivers/soc/mediatek/Kconfig @@ -91,4 +91,13 @@ 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 SOCINFO" + depends on MTK_EFUSE && NVMEM + help + Say y here to enable mtk socinfo information. + This enables a sysfs node which shows attributes of MTK soc info. + Information of soc info includes the manufacturer, the marketing + name, and the soc used. + 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..fe5a68925f58 --- /dev/null +++ b/drivers/soc/mediatek/mtk-socinfo.c @@ -0,0 +1,166 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2023 MediaTek Inc. + */ +#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 socinfo_data { + char *soc_name; + char *segment_name; + char *marketing_name; + u32 cell_data[MAX_CELLS]; +}; + +const char *soc_manufacturer = "MediaTek"; +struct soc_device *soc_dev; +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}; + + attrs = devm_kzalloc(mtk_socinfop->dev, sizeof(*attrs), GFP_KERNEL); + if (!attrs) + return -ENOMEM; + + snprintf(machine, 30, "%s (%s)", mtk_socinfop->socinfo_data->marketing_name, + mtk_socinfop->socinfo_data->soc_name); + attrs->family = soc_manufacturer; + attrs->machine = machine; + + soc_dev = soc_device_register(attrs); + if (IS_ERR(soc_dev)) + return PTR_ERR(soc_dev); + + dev_info(mtk_socinfop->dev, "%s SoC detected.\n", attrs->machine); + return 0; +} + +static int mtk_socinfo_get_socinfo_data(struct mtk_socinfo *mtk_socinfop) +{ + unsigned int i = 0, j = 0; + unsigned int num_cell_data = 0; + u32 *cell_datap[MAX_CELLS] = { NULL }; + size_t efuse_bytes; + struct nvmem_cell *cell; + bool match_socinfo = true; + int match_socinfo_index = -1; + + for (i = 0; i < MAX_CELLS; i++) { + cell = nvmem_cell_get(mtk_socinfop->dev, cell_names[i]); + if (IS_ERR_OR_NULL(cell)) + break; + cell_datap[i] = (u32 *)nvmem_cell_read(cell, &efuse_bytes); + nvmem_cell_put(cell); + num_cell_data++; + } + + 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_datap[j]) != socinfo_data_table[i].cell_data[j]) + match_socinfo = false; + } + if (num_cell_data > 0 && 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 const struct of_device_id mtk_socinfo_id_table[] = { + { .compatible = "mediatek,socinfo" }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, mtk_socinfo_id_table); + +static int mtk_socinfo_probe(struct platform_device *pdev) +{ + struct mtk_socinfo *mtk_socinfop; + int ret = 0; + + 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 != 0) + return dev_err_probe(mtk_socinfop->dev, -EINVAL, "Failed to create socinfo node\n"); + + return 0; +} + +static int mtk_socinfo_remove(struct platform_device *pdev) +{ + if (soc_dev) + soc_device_unregister(soc_dev); + return 0; +} + +static struct platform_driver mtk_socinfo = { + .probe = mtk_socinfo_probe, + .remove = mtk_socinfo_remove, + .driver = { + .name = "mtk_socinfo", + .owner = THIS_MODULE, + .of_match_table = mtk_socinfo_id_table, + }, +}; +module_platform_driver(mtk_socinfo); +MODULE_AUTHOR("William-TW LIN "); +MODULE_DESCRIPTION("Mediatek socinfo driver"); +MODULE_LICENSE("GPL");