From patchwork Mon Oct 28 09:55:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mason Yang X-Patchwork-Id: 1185272 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="uSOvcg4N"; 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 471qFz1jRGz9sP4 for ; Mon, 28 Oct 2019 20:30:47 +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=vZvXMv9NkHvtsCEotGG5x+L/ywsYDLgNTfU6H0OO8dk=; b=uSOvcg4N9vPtsq5/RU4kd/x4n7 HwUpOVx9VdQ94TupdDe+iKHum+dFJTFRqrynvhB4KHrMYOx+PFBhxDUjljFv2ce2mwGr05HMzy9kf +cwHf/e7K5Hcz8fcCeOQZ1MY/Xscd+pf11lz8jz2L1hrbQvyRet8QtQU86lYvbPRmPv3E8UBmjBDl 3O/OXGUi8pO2EIhE+o9X4gu9aQnDQWCjvprwjMp0xBxyjWrdpxMu9am7ZVWTtIIpGp959WV4U3YdJ jXwNwaQPAdwxm+4/dRZbKDe0BXOw03qcio/UhRbNVEBRhrz3ZDeZXnmUO86S39HT/ofgO7VDxOo3l wXRF6ObA==; 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 1iP1MJ-0002O7-NL; Mon, 28 Oct 2019 09:30:43 +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-00022O-Ir 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 x9S9TQPP013435; Mon, 28 Oct 2019 17:29:29 +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 3/4] mtd: rawnand: Add support manufacturer specific suspend/resume operation Date: Mon, 28 Oct 2019 17:55:26 +0800 Message-Id: <1572256527-5074-4-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 x9S9TQPP013435 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191028_023022_914506_1D16B92C X-CRM114-Status: UNSURE ( 9.53 ) 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 Patch nand_suspend() & nand_resume() for manufacturer specific suspend/resume operation. Signed-off-by: Mason Yang Reviewed-by: Miquel Raynal --- drivers/mtd/nand/raw/nand_base.c | 9 +++++++-- include/linux/mtd/rawnand.h | 2 ++ 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 5e318ff..2a9c5bb 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4323,6 +4323,8 @@ static int nand_suspend(struct mtd_info *mtd) struct nand_chip *chip = mtd_to_nand(mtd); mutex_lock(&chip->lock); + if (chip->_suspend) + chip->_suspend(chip); chip->suspended = 1; mutex_unlock(&chip->lock); @@ -4338,11 +4340,14 @@ 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 2430ecd..6b14041 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -1117,6 +1117,8 @@ 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;