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=unavailable 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 280D2C3F2CD for ; Tue, 3 Mar 2020 07:23:10 +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 E123620CC7 for ; Tue, 3 Mar 2020 07:23:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="FN+wda9L" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E123620CC7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mxic.com.tw 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: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=jwUwtU/a/pENzY5cpOO/O5LDG/XPcHOKRVcsvXWmWJY=; b=FN+wda9LtQXCWOsPpCKGRBgttY Xfx9/EhMTFX4Wh0lkmg8eaGHSjMtrEw5cpbpazB3/1SwxwVMjCXtDNbSsnRbkol+6rVyu1wK8kdEp Pqx0SG1rU66GYtnMJk/HbVPOOLjcQf2Js+q0X7oUtCh9e3kplsGX1duSjQ69/TwBvBZmzCAwtfzXV cyUDRG0hPyy+pvUm3ddkVJ6FB6auNBEkORDyKGZ2KndyXBMoyQ6/+IkMs/n+DKgFQMw3gCPY0iPOv tvkRdwI/KJXUq+9epTfsf9A2F4a04ZTPzy/98pklInoVFrj+bosskVrkXBbJARExZO/iJW873v3rM noLSA6cg==; 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 1j91tJ-0000A8-NH; Tue, 03 Mar 2020 07:22:57 +0000 Received: from twhmllg3.macronix.com ([122.147.135.201]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j91sw-0008As-Sa for linux-mtd@lists.infradead.org; Tue, 03 Mar 2020 07:22:38 +0000 Received: from localhost.localdomain ([172.17.195.96]) by TWHMLLG3.macronix.com with ESMTP id 0237LRLC023026; Tue, 3 Mar 2020 15:21:31 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) From: Mason Yang To: miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com Subject: [PATCH v3 3/4] mtd: rawnand: Add support manufacturer specific suspend/resume operation Date: Tue, 3 Mar 2020 15:21:23 +0800 Message-Id: <1583220084-10890-4-git-send-email-masonccyang@mxic.com.tw> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1583220084-10890-1-git-send-email-masonccyang@mxic.com.tw> References: <1583220084-10890-1-git-send-email-masonccyang@mxic.com.tw> X-MAIL: TWHMLLG3.macronix.com 0237LRLC023026 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200302_232235_355716_C99BF28E X-CRM114-Status: GOOD ( 13.16 ) 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: bbrezillon@kernel.org, juliensu@mxic.com.tw, s.hauer@pengutronix.de, yuehaibing@huawei.com, linux-kernel@vger.kernel.org, stefan@agner.ch, rfontana@redhat.com, linux-mtd@lists.infradead.org, frieder.schrempf@kontron.de, tglx@linutronix.de, Mason Yang , allison@lohutok.net MIME-Version: 1.0 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 Patch nand_suspend() & nand_resume() for manufacturer specific suspend/resume operation. Signed-off-by: Mason Yang Reported-by: kbuild test robot Reviewed-by: Miquel Raynal --- drivers/mtd/nand/raw/nand_base.c | 11 ++++++++--- include/linux/mtd/rawnand.h | 4 ++++ 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 769be81..b44e460 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4327,7 +4327,9 @@ static int nand_suspend(struct mtd_info *mtd) struct nand_chip *chip = mtd_to_nand(mtd); mutex_lock(&chip->lock); - chip->suspended = 1; + if (chip->_suspend) + if (!chip->_suspend(chip)) + chip->suspended = 1; mutex_unlock(&chip->lock); return 0; @@ -4342,11 +4344,14 @@ static void nand_resume(struct mtd_info *mtd) struct nand_chip *chip = mtd_to_nand(mtd); mutex_lock(&chip->lock); - if (chip->suspended) + if (chip->suspended) { + if (chip->_resume) + chip->_resume(chip); chip->suspended = 0; - else + } else { pr_err("%s called for a chip which is not in suspended state\n", __func__); + } mutex_unlock(&chip->lock); } diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index bc2fa3c..c0055ed 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -1064,6 +1064,8 @@ struct nand_legacy { * @lock: lock protecting the suspended field. Also used to * serialize accesses to the NAND device. * @suspended: set to 1 when the device is suspended, 0 when it's not. + * @_suspend: [REPLACEABLE] specific NAND device suspend operation + * @_resume: [REPLACEABLE] specific NAND device resume operation * @bbt: [INTERN] bad block table pointer * @bbt_td: [REPLACEABLE] bad block table descriptor for flash * lookup. @@ -1119,6 +1121,8 @@ struct nand_chip { struct mutex lock; unsigned int suspended : 1; + int (*_suspend)(struct nand_chip *chip); + void (*_resume)(struct nand_chip *chip); uint8_t *oob_poi; struct nand_controller *controller; -- 1.9.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/