From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 159D2C072B5 for ; Wed, 22 May 2019 01:47:20 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id DF87221841 for ; Wed, 22 May 2019 01:47:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="J8iSrqAW"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="TQvVRpXQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DF87221841 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:References: 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=5RSIv+59EfHKPzh4ecYvfioXMWIvQF35bj2d49rSoBY=; b=J8iSrqAW6CQU3g dgagG9bFWIVWCf6VSK/jOrXghgwbADgOMg5h4BhrkPM4mkvTGCZ3F2xrt5nL0sCOPf3VTKhFxZnVk 5vBibMkm/chugp6kTwmqBG7vx1pIrP5IHI936Kr52lBZDL+vRr1CTY8LOlS4h60O47CXpitjzb6SP bQHi9eXIvFyT4CoXxajnyz920Hvyk8c2yjRdFpEZBPb9eZYprzSHVzc056CAaSeiKxEIlMTSKOqnG NuUIti9ki+5vWci83HobZMsIXvXEdNy6Ahfbx5rQYY4vekfSwPd7J5QuU+RkogvDvaHeCEazWzTot 6OiW+/bw2xlLq2NVmzig==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hTGLc-0005aT-6M; Wed, 22 May 2019 01:47:16 +0000 Received: from mail-eopbgr20074.outbound.protection.outlook.com ([40.107.2.74] helo=EUR02-VE1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hTGLO-0005Iy-2X for linux-arm-kernel@lists.infradead.org; Wed, 22 May 2019 01:47:03 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Qfw7tIirkwCnRpnfsoTwEOAubjFw3Zu2rG9tnNmnNkw=; b=TQvVRpXQrhK2U+TcHMeEMYD0upguxYJ+qjYteu9MevfvcHzK8eih3RPEYE1p4rfqUlwjUox1ooFeYV7iordTMFRcjJ6zY8E1mWoIfOka4bN7aZqHoCRvLgkJ8WYTe8vvcCoYndcIIvS9yNzhuxtJ3RZh+5St7sOnE3IjtfnxR80= Received: from AM0PR04MB4481.eurprd04.prod.outlook.com (52.135.147.15) by AM0PR04MB5954.eurprd04.prod.outlook.com (20.178.115.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1922.15; Wed, 22 May 2019 01:46:58 +0000 Received: from AM0PR04MB4481.eurprd04.prod.outlook.com ([fe80::3173:24:d401:2378]) by AM0PR04MB4481.eurprd04.prod.outlook.com ([fe80::3173:24:d401:2378%6]) with mapi id 15.20.1900.020; Wed, 22 May 2019 01:46:58 +0000 From: Peng Fan To: "srinivas.kandagatla@linaro.org" , "robh+dt@kernel.org" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "festevam@gmail.com" Subject: [PATCH V3 RESEND 2/4] nvmem: imx: add i.MX8 nvmem driver Thread-Topic: [PATCH V3 RESEND 2/4] nvmem: imx: add i.MX8 nvmem driver Thread-Index: AQHVEEA+3aCz3fYjE0ifbeExyefVtw== Date: Wed, 22 May 2019 01:46:58 +0000 Message-ID: <20190522020040.30283-2-peng.fan@nxp.com> References: <20190522020040.30283-1-peng.fan@nxp.com> In-Reply-To: <20190522020040.30283-1-peng.fan@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.16.4 x-clientproxiedby: HK0PR04CA0016.apcprd04.prod.outlook.com (2603:1096:203:36::28) To AM0PR04MB4481.eurprd04.prod.outlook.com (2603:10a6:208:70::15) authentication-results: spf=none (sender IP is ) smtp.mailfrom=peng.fan@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.71] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: aeca3e36-bfbe-43e2-7ab8-08d6de5760b4 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(4618075)(2017052603328)(7193020); SRVR:AM0PR04MB5954; x-ms-traffictypediagnostic: AM0PR04MB5954: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4714; x-forefront-prvs: 0045236D47 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(366004)(189003)(199004)(44832011)(486006)(2501003)(186003)(305945005)(11346002)(446003)(476003)(2616005)(2906002)(14444005)(76176011)(71190400001)(71200400001)(14454004)(52116002)(99286004)(256004)(102836004)(26005)(6116002)(3846002)(6506007)(68736007)(386003)(498600001)(5660300002)(54906003)(110136005)(6512007)(6486002)(50226002)(4326008)(66066001)(25786009)(6436002)(53936002)(2201001)(8676002)(8936002)(81166006)(81156014)(73956011)(66946007)(86362001)(66476007)(66556008)(64756008)(66446008)(1076003)(7416002)(36756003)(7736002); DIR:OUT; SFP:1101; SCL:1; SRVR:AM0PR04MB5954; H:AM0PR04MB4481.eurprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: Vy4Ft/mKMJbcEMCqmFdRGzP2yWcC/ImwCqhFuI7FNpJXj9GyngOUJXYVsGCRcTlQnGT6CxzZIW9RiXz24hKb4WQaR+PvLe9QUyOs8gSHgYM+8DhcB85i6oxddutS3jftr09tqMeOjf8EtwbEEniDMZRjyErO2XvpSXKx9SN1sykh/Cs26ZHRQV/b+FMj7u81PmppHuod66u3HerZexqDZOs0PElyPJ0BUwG+JGjtDf/EnpPm1XgzXbmBKOW6JpbwJjckBnvVlKVEyt/PYr4Ly97T2V9XkMVlfqNwItAGqN/hMuuK9t+20JCBNCK5bmt2BYXMT5k7qWlzwTiX29/pSDSDhyLqggxTqHmNk/brD2PTNT00ENiGWSre4Q0E6J7XwJpl1WPE+rFKGAK238JvUfrjDNf7/E9E46jt/fO8RNg= MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: aeca3e36-bfbe-43e2-7ab8-08d6de5760b4 X-MS-Exchange-CrossTenant-originalarrivaltime: 22 May 2019 01:46:58.7844 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB5954 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190521_184702_117527_6C20B845 X-CRM114-Status: GOOD ( 19.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "devicetree@vger.kernel.org" , Peng Fan , "linux-kernel@vger.kernel.org" , dl-linux-imx , Pengutronix Kernel Team , "van.freenix@gmail.com" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch adds i.MX8 nvmem ocotp driver to access fuse via RPC to i.MX8 system controller. Cc: Srinivas Kandagatla Cc: Shawn Guo Cc: Sascha Hauer Cc: Pengutronix Kernel Team Cc: Fabio Estevam Cc: NXP Linux Team Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Peng Fan --- V3: Use imx_sc_msg_misc_fuse_read for req/resp Drop uneccessary check Drop the unnecessary type conversion Minor fixes according to v2 comments V2: Add "scu" or "SCU", Add imx_sc_misc_otp_fuse_read, minor fixes drivers/nvmem/Kconfig | 7 ++ drivers/nvmem/Makefile | 2 + drivers/nvmem/imx-ocotp-scu.c | 161 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 170 insertions(+) create mode 100644 drivers/nvmem/imx-ocotp-scu.c diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index 530d570724c9..79afe44195a1 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -36,6 +36,13 @@ config NVMEM_IMX_OCOTP This driver can also be built as a module. If so, the module will be called nvmem-imx-ocotp. +config NVMEM_IMX_OCOTP_SCU + tristate "i.MX8 SCU On-Chip OTP Controller support" + depends on IMX_SCU + help + This is a driver for the SCU On-Chip OTP Controller (OCOTP) + available on i.MX8 SoCs. + config NVMEM_LPC18XX_EEPROM tristate "NXP LPC18XX EEPROM Memory Support" depends on ARCH_LPC18XX || COMPILE_TEST diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index 2ece8ffffdda..30d653d34e57 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -13,6 +13,8 @@ obj-$(CONFIG_NVMEM_IMX_IIM) += nvmem-imx-iim.o nvmem-imx-iim-y := imx-iim.o obj-$(CONFIG_NVMEM_IMX_OCOTP) += nvmem-imx-ocotp.o nvmem-imx-ocotp-y := imx-ocotp.o +obj-$(CONFIG_NVMEM_IMX_OCOTP_SCU) += nvmem-imx-ocotp-scu.o +nvmem-imx-ocotp-scu-y := imx-ocotp-scu.o obj-$(CONFIG_NVMEM_LPC18XX_EEPROM) += nvmem_lpc18xx_eeprom.o nvmem_lpc18xx_eeprom-y := lpc18xx_eeprom.o obj-$(CONFIG_NVMEM_LPC18XX_OTP) += nvmem_lpc18xx_otp.o diff --git a/drivers/nvmem/imx-ocotp-scu.c b/drivers/nvmem/imx-ocotp-scu.c new file mode 100644 index 000000000000..d9dc482ecb2f --- /dev/null +++ b/drivers/nvmem/imx-ocotp-scu.c @@ -0,0 +1,161 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * i.MX8 OCOTP fusebox driver + * + * Copyright 2019 NXP + * + * Peng Fan + */ + +#include +#include +#include +#include +#include +#include + +enum ocotp_devtype { + IMX8QXP, +}; + +struct ocotp_devtype_data { + int devtype; + int nregs; +}; + +struct ocotp_priv { + struct device *dev; + const struct ocotp_devtype_data *data; + struct imx_sc_ipc *nvmem_ipc; +}; + +struct imx_sc_msg_misc_fuse_read { + struct imx_sc_rpc_msg hdr; + u32 word; +} __packed; + +static struct ocotp_devtype_data imx8qxp_data = { + .devtype = IMX8QXP, + .nregs = 800, +}; + +static int imx_sc_misc_otp_fuse_read(struct imx_sc_ipc *ipc, u32 word, + u32 *val) +{ + struct imx_sc_msg_misc_fuse_read msg; + struct imx_sc_rpc_msg *hdr = &msg.hdr; + int ret; + + hdr->ver = IMX_SC_RPC_VERSION; + hdr->svc = IMX_SC_RPC_SVC_MISC; + hdr->func = IMX_SC_MISC_FUNC_OTP_FUSE_READ; + hdr->size = 2; + + msg.word = word; + + ret = imx_scu_call_rpc(ipc, &msg, true); + if (ret) + return ret; + + *val = msg.word; + + return 0; +} + +static int imx_scu_ocotp_read(void *context, unsigned int offset, + void *val, size_t bytes) +{ + struct ocotp_priv *priv = context; + u32 count, index, num_bytes; + u32 *buf; + void *p; + int i, ret; + + index = offset >> 2; + num_bytes = round_up((offset % 4) + bytes, 4); + count = num_bytes >> 2; + + if (count > (priv->data->nregs - index)) + count = priv->data->nregs - index; + + p = kzalloc(num_bytes, GFP_KERNEL); + if (!p) + return -ENOMEM; + + buf = p; + + for (i = index; i < (index + count); i++) { + if (priv->data->devtype == IMX8QXP) { + if ((i > 271) && (i < 544)) { + *buf++ = 0; + continue; + } + } + + ret = imx_sc_misc_otp_fuse_read(priv->nvmem_ipc, i, buf); + if (ret) { + kfree(p); + return ret; + } + buf++; + } + + memcpy(val, (u8 *)p + offset % 4, bytes); + + kfree(p); + + return 0; +} + +static struct nvmem_config imx_scu_ocotp_nvmem_config = { + .name = "imx-scu-ocotp", + .read_only = true, + .word_size = 4, + .stride = 1, + .owner = THIS_MODULE, + .reg_read = imx_scu_ocotp_read, +}; + +static const struct of_device_id imx_scu_ocotp_dt_ids[] = { + { .compatible = "fsl,imx8qxp-scu-ocotp", (void *)&imx8qxp_data }, + { }, +}; +MODULE_DEVICE_TABLE(of, imx_scu_ocotp_dt_ids); + +static int imx_scu_ocotp_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct ocotp_priv *priv; + struct nvmem_device *nvmem; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + ret = imx_scu_get_handle(&priv->nvmem_ipc); + if (ret) + return ret; + + priv->data = of_device_get_match_data(dev); + priv->dev = dev; + imx_scu_ocotp_nvmem_config.size = 4 * priv->data->nregs; + imx_scu_ocotp_nvmem_config.dev = dev; + imx_scu_ocotp_nvmem_config.priv = priv; + nvmem = devm_nvmem_register(dev, &imx_scu_ocotp_nvmem_config); + + return PTR_ERR_OR_ZERO(nvmem); +} + +static struct platform_driver imx_scu_ocotp_driver = { + .probe = imx_scu_ocotp_probe, + .driver = { + .name = "imx_scu_ocotp", + .of_match_table = imx_scu_ocotp_dt_ids, + }, +}; +module_platform_driver(imx_scu_ocotp_driver); + +MODULE_AUTHOR("Peng Fan "); +MODULE_DESCRIPTION("i.MX8 SCU OCOTP fuse box driver"); +MODULE_LICENSE("GPL v2"); -- 2.16.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel