From patchwork Mon Oct 28 09:55:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mason Yang X-Patchwork-Id: 1185273 X-Patchwork-Delegate: miquel.raynal@bootlin.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=mxic.com.tw Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="CwvpSXFy"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 471qGG69dYz9sP4 for ; Mon, 28 Oct 2019 20:31:02 +1100 (AEDT) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To: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=z+sBTfAMp1xZ9rrzHiw2E+HdH47zthTBd++Q6dju3rQ=; b=CwvpSXFyPafEzcB4ik3DsJW8Xc NQhbDS9UjQqkmaJdbP6DMUTJ/8kMXtasTrhVSPaJiWvPzyNxZFbFIR0PkGZnuYilcvf06o089TeIy QbZjAbjAYj0s8J6d+1dTCGGC0f6S7ws3Y0hodwvhO/2n/ikdXFarHVFrkuL0cQkHc+Z2smCKBHA0A cJF3lyrtMLbE+MNELgvaEhFzKbTAR6hXSjq5HsqB8DBf9xP7411NhAcm2cgzyBbBk6b/uUhaw3YzM 9YMa1xC/jBSGeVCqK9Ledh49pd07VZMxVt19A4y9bQTKcoc7OW4TfNKaY4myQfpf2AIrotkO5fDwC eXTg7BOQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iP1Ma-0002fN-Bx; Mon, 28 Oct 2019 09:31:00 +0000 Received: from twhmllg4.macronix.com ([211.75.127.132]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iP1Ly-00022L-Iu for linux-mtd@lists.infradead.org; Mon, 28 Oct 2019 09:30:25 +0000 Received: from localhost.localdomain ([172.17.195.96]) by TWHMLLG4.macronix.com with ESMTP id x9S9TQPN013435; Mon, 28 Oct 2019 17:29:27 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) From: Mason Yang To: miquel.raynal@bootlin.com, richard@nod.at, marek.vasut@gmail.com, dwmw2@infradead.org, bbrezillon@kernel.org, computersforpeace@gmail.com, vigneshr@ti.com Subject: [PATCH v2 1/4] mtd: rawnand: Add support manufacturer specific lock/unlock operatoin Date: Mon, 28 Oct 2019 17:55:24 +0800 Message-Id: <1572256527-5074-2-git-send-email-masonccyang@mxic.com.tw> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1572256527-5074-1-git-send-email-masonccyang@mxic.com.tw> References: <1572256527-5074-1-git-send-email-masonccyang@mxic.com.tw> X-MAIL: TWHMLLG4.macronix.com x9S9TQPN013435 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191028_023022_909129_4F01B66A X-CRM114-Status: UNSURE ( 9.70 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [211.75.127.132 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: juliensu@mxic.com.tw, masonccyang@mxic.com.tw, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Add nand_lock() & nand_unlock() for manufacturer specific lock & unlock operation while the device supports Block Protection function. Signed-off-by: Mason Yang Reviewed-by: Miquel Raynal --- drivers/mtd/nand/raw/nand_base.c | 32 ++++++++++++++++++++++++++++++-- include/linux/mtd/rawnand.h | 3 +++ 2 files changed, 33 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 5c2c30a..5e318ff 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4356,6 +4356,34 @@ static void nand_shutdown(struct mtd_info *mtd) nand_suspend(mtd); } +/** + * nand_lock - [MTD Interface] Lock the NAND flash + * @mtd: MTD device structure + */ +static int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (!chip->_lock) + return -ENOTSUPP; + + return chip->_lock(chip, ofs, len); +} + +/** + * nand_unlock - [MTD Interface] Unlock the NAND flash + * @mtd: MTD device structure + */ +static int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (!chip->_unlock) + return -ENOTSUPP; + + return chip->_unlock(chip, ofs, len); +} + /* Set default functions */ static void nand_set_defaults(struct nand_chip *chip) { @@ -5782,8 +5810,8 @@ static int nand_scan_tail(struct nand_chip *chip) mtd->_read_oob = nand_read_oob; mtd->_write_oob = nand_write_oob; mtd->_sync = nand_sync; - mtd->_lock = NULL; - mtd->_unlock = NULL; + mtd->_lock = nand_lock; + mtd->_unlock = nand_unlock; mtd->_suspend = nand_suspend; mtd->_resume = nand_resume; mtd->_reboot = nand_shutdown; diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 4ab9bcc..2430ecd 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -1136,6 +1136,9 @@ struct nand_chip { const struct nand_manufacturer *desc; void *priv; } manufacturer; + + int (*_lock)(struct nand_chip *chip, loff_t ofs, uint64_t len); + int (*_unlock)(struct nand_chip *chip, loff_t ofs, uint64_t len); }; extern const struct mtd_ooblayout_ops nand_ooblayout_sp_ops;