From patchwork Thu Feb 7 12:36:58 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: avinash philip X-Patchwork-Id: 2110761 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id EFC6ADFB7B for ; Thu, 7 Feb 2013 12:41:50 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1U3QlU-0002kH-JL; Thu, 07 Feb 2013 12:39:44 +0000 Received: from comal.ext.ti.com ([198.47.26.152]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1U3QlF-0002Zs-2h; Thu, 07 Feb 2013 12:39:30 +0000 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id r17CdLTO010388; Thu, 7 Feb 2013 06:39:22 -0600 Received: from DBDE70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id r17CdKFG014812; Thu, 7 Feb 2013 18:09:20 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by dbde70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 14.1.323.3; Thu, 7 Feb 2013 18:09:21 +0530 Received: from ucmsshproxy.india.ext.ti.com (dbdp20.itg.ti.com [172.24.170.38]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with SMTP id r17CdK2U024272; Thu, 7 Feb 2013 18:09:20 +0530 Received: from symphony.india.ext.ti.com (unknown [192.168.247.13]) by ucmsshproxy.india.ext.ti.com (Postfix) with ESMTP id 5015E158003; Thu, 7 Feb 2013 18:09:20 +0530 (IST) Received: from ubuntu-psp-linux.india.ext.ti.com (ubuntu-psp-linux [192.168.247.46]) by symphony.india.ext.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id r17CdJR08398; Thu, 7 Feb 2013 18:09:19 +0530 (IST) From: Philip Avinash To: , , , , Subject: [PATCH v2 4/4] mtd: nand: omap2: Low power transition support Date: Thu, 7 Feb 2013 18:06:58 +0530 Message-ID: <1360240618-11094-5-git-send-email-avinashphilip@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1360240618-11094-1-git-send-email-avinashphilip@ti.com> References: <1360240618-11094-1-git-send-email-avinashphilip@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130207_073929_265209_6CFD95EE X-CRM114-Status: GOOD ( 11.31 ) X-Spam-Score: -4.6 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [198.47.26.152 listed in list.dnswl.org] 3.0 KHOP_BIG_TO_CC Sent to 10+ recipients instaed of Bcc or a list -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: afzal@ti.com, nsekhar@ti.com, linux-kernel@vger.kernel.org, hvaibhav@ti.com, gururaja.hebbar@ti.com, linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add support for Low power transition support in nand driver. Also ensures the current transaction finishes before going to low power mode with _suspend support in mtd layer. Signed-off-by: Philip Avinash --- drivers/mtd/nand/omap2.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 8e820dd..790215b 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -2103,9 +2103,28 @@ static int omap_nand_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int omap_nand_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct mtd_info *mtd = platform_get_drvdata(pdev); + + mtd->_suspend(mtd); + return 0; +} + +static int omap_nand_resume(struct platform_device *pdev) +{ + return 0; +} +#endif + static struct platform_driver omap_nand_driver = { .probe = omap_nand_probe, .remove = omap_nand_remove, +#ifdef CONFIG_PM + .suspend = omap_nand_suspend, + .resume = omap_nand_resume, +#endif .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE,