Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751910AbbGWFta (ORCPT ); Thu, 23 Jul 2015 01:49:30 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:41797 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751136AbbGWFtY (ORCPT ); Thu, 23 Jul 2015 01:49:24 -0400 X-Listener-Flag: 11101 From: Eddie Huang To: Wim Van Sebroeck , Guenter Roeck CC: Matthias Brugger , , , , , Sascha Hauer , Greta Zhang , Roger Lu , Eddie Huang Subject: [PATCH v2 1/2] watchdog: add wdt suspend/resume support Date: Thu, 23 Jul 2015 13:49:10 +0800 Message-ID: <1437630551-39650-2-git-send-email-eddie.huang@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1437630551-39650-1-git-send-email-eddie.huang@mediatek.com> References: <1437630551-39650-1-git-send-email-eddie.huang@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1854 Lines: 71 From: Greta Zhang add wdt driver suspend/resume support Signed-off-by: Greta Zhang Signed-off-by: Roger Lu Signed-off-by: Eddie Huang --- drivers/watchdog/mtk_wdt.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c index 938b987..056412c 100644 --- a/drivers/watchdog/mtk_wdt.c +++ b/drivers/watchdog/mtk_wdt.c @@ -221,17 +221,47 @@ static int mtk_wdt_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int mtk_wdt_suspend(struct device *dev) +{ + struct mtk_wdt_dev *mtk_wdt = dev_get_drvdata(dev); + + if (watchdog_active(&mtk_wdt->wdt_dev)) + mtk_wdt_stop(&mtk_wdt->wdt_dev); + + return 0; +} + +static int mtk_wdt_resume(struct device *dev) +{ + struct mtk_wdt_dev *mtk_wdt = dev_get_drvdata(dev); + + if (watchdog_active(&mtk_wdt->wdt_dev)) { + mtk_wdt_start(&mtk_wdt->wdt_dev); + mtk_wdt_ping(&mtk_wdt->wdt_dev); + } + + return 0; +} +#endif + static const struct of_device_id mtk_wdt_dt_ids[] = { { .compatible = "mediatek,mt6589-wdt" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, mtk_wdt_dt_ids); +static const struct dev_pm_ops mtk_wdt_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mtk_wdt_suspend, + mtk_wdt_resume) +}; + static struct platform_driver mtk_wdt_driver = { .probe = mtk_wdt_probe, .remove = mtk_wdt_remove, .driver = { .name = DRV_NAME, + .pm = &mtk_wdt_pm_ops, .of_match_table = mtk_wdt_dt_ids, }, }; -- 1.8.1.1.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/