From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philip Avinash Subject: [PATCH 4/4] mtd: nand: omap2: Low power transition support Date: Wed, 23 Jan 2013 15:15:46 +0530 Message-ID: <1358934346-16822-5-git-send-email-avinashphilip@ti.com> References: <1358933176-12409-1-git-send-email-avinashphilip@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1358933176-12409-1-git-send-email-avinashphilip@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: khilman@ti.com, tony@atomide.com, linux@arm.linux.org.uk, dwmw2@infradead.org Cc: afzal@ti.com, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, nsekhar@ti.com, gururaja.hebbar@ti.com, Philip Avinash List-Id: 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, -- 1.7.9.5