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=-9.8 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,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 ACC85C2D0C2 for ; Tue, 31 Dec 2019 19:27:50 +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 89567206D9 for ; Tue, 31 Dec 2019 19:27:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="nZ+o6EE5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 89567206D9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=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: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=EhaW1O8Kw33gHaqvWadRxljvVF9+Frn82rPdmBWlZV4=; b=nZ+o6EE5z6e+cH mBZEN2jEIJzHnd1qLYa+MUdJuZUw9FS6Kw6aiqPreUJLC10qa9l+1wHldJ3/w6axHYbcPlyEosObc wBH33O9XomIojnf9CED7M+nIgGi8pr3eVdUf/y74o/bZhjJ86YotcFB6YpMwOP28conoxZULAC0Uo IFvK6b5Bafk/irCBxXn10AHjoih34XBldgIvuIAYL0/8qZ2OX4y6etYtLwicZE7YFI/rR6C42fz7F siXrpkj1WAeaeDykkqqFGfrVelJ5pjBWOfFRyuho73CXIxLGzlJaWg6spxgf7uXnfz0ySApHCyFW7 XsIdFJnMOw+I+wJ9VJUQ==; 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 1imNB1-0005AC-2E; Tue, 31 Dec 2019 19:27:35 +0000 Received: from relay1-d.mail.gandi.net ([217.70.183.193]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1imNAo-0004zb-NZ for linux-mtd@lists.infradead.org; Tue, 31 Dec 2019 19:27:24 +0000 X-Originating-IP: 91.224.148.103 Received: from localhost.localdomain (unknown [91.224.148.103]) (Authenticated sender: miquel.raynal@bootlin.com) by relay1-d.mail.gandi.net (Postfix) with ESMTPSA id 78589240002; Tue, 31 Dec 2019 19:27:16 +0000 (UTC) From: Miquel Raynal To: Richard Weinberger , Vignesh Raghavendra , Tudor Ambarus , Subject: [RFC PATCH 1/3] mtd: rawnand: Add the nand_chip->erase hook Date: Tue, 31 Dec 2019 20:26:54 +0100 Message-Id: <20191231192656.16376-2-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191231192656.16376-1-miquel.raynal@bootlin.com> References: <20191231192656.16376-1-miquel.raynal@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191231_112722_905325_51A60118 X-CRM114-Status: GOOD ( 11.16 ) 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: Miquel Raynal , Zoltan Szubbocsev , Thomas Petazzoni , Boris Brezillon , tglx@linutronix.de, Piotr Wojtaszczyk , Bean Huo Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org In order to solve an issue with Micron NANDs, we must be able to overload the erase operation. With this in mind, we create a ->erase hook in the nand_chip structure which points by default to the currently in use nand_erase_nand() helper. Signed-off-by: Miquel Raynal --- drivers/mtd/nand/raw/nand_base.c | 6 +++++- include/linux/mtd/rawnand.h | 3 +++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index f64e3b6605c6..1b1d86391e9d 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4153,7 +4153,9 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, */ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr) { - return nand_erase_nand(mtd_to_nand(mtd), instr, 0); + struct nand_chip *chip = mtd_to_nand(mtd); + + return chip->erase(chip, instr, 0); } /** @@ -4373,6 +4375,8 @@ static void nand_set_defaults(struct nand_chip *chip) if (!chip->buf_align) chip->buf_align = 1; + + chip->erase = nand_erase_nand; } /* Sanitize ONFI strings so we can safely print them */ diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 4ab9bccfcde0..aa956949b226 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -1020,6 +1020,7 @@ struct nand_legacy { * avoid using them. * @setup_read_retry: [FLASHSPECIFIC] flash (vendor) specific function for * setting the read-retry mode. Mostly needed for MLC NAND. + * @erase: Raw NAND erase operation. * @ecc: [BOARDSPECIFIC] ECC control structure * @buf_align: minimum buffer alignment required by a platform * @oob_poi: "poison value buffer," used for laying out OOB data @@ -1085,6 +1086,8 @@ struct nand_chip { struct nand_legacy legacy; int (*setup_read_retry)(struct nand_chip *chip, int retry_mode); + int (*erase)(struct nand_chip *chip, struct erase_info *instr, + int allowbbt); unsigned int options; unsigned int bbt_options; -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/