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=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 93015CA9EA0 for ; Mon, 28 Oct 2019 09:29:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5EA9E21D80 for ; Mon, 28 Oct 2019 09:29:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732607AbfJ1J3p (ORCPT ); Mon, 28 Oct 2019 05:29:45 -0400 Received: from twhmllg4.macronix.com ([211.75.127.132]:61724 "EHLO TWHMLLG4.macronix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731707AbfJ1J3o (ORCPT ); Mon, 28 Oct 2019 05:29:44 -0400 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 Cc: juliensu@mxic.com.tw, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, masonccyang@mxic.com.tw 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 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Patch nand_suspend() & nand_resume() for manufacturer specific suspend/resume operation. Signed-off-by: Mason Yang --- 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; -- 1.9.1