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: 2110721 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 8B8BE40106 for ; Thu, 7 Feb 2013 12:39:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932119Ab3BGMjd (ORCPT ); Thu, 7 Feb 2013 07:39:33 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:44916 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932092Ab3BGMjb (ORCPT ); Thu, 7 Feb 2013 07:39:31 -0500 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: , , , , CC: , , , , , , , , Philip Avinash 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 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.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,