From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756517Ab3KFLdH (ORCPT ); Wed, 6 Nov 2013 06:33:07 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:45809 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756132Ab3KFLdE (ORCPT ); Wed, 6 Nov 2013 06:33:04 -0500 Message-ID: <527A28CE.2070802@ti.com> Date: Wed, 6 Nov 2013 13:32:30 +0200 From: "ivan.khoronzhuk" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Santosh Shilimkar , , , , CC: , , , , , , , , Subject: Fwd: [PATCH 4/8] watchdog: davinci: add GET_STATUS option support References: <1383680783-12114-5-git-send-email-ivan.khoronzhuk@ti.com> In-Reply-To: <1383680783-12114-5-git-send-email-ivan.khoronzhuk@ti.com> X-Forwarded-Message-Id: <1383680783-12114-5-git-send-email-ivan.khoronzhuk@ti.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.167.145.122] X-EXCLAIMER-MD-CONFIG: f9c360f5-3d1e-4c3c-8703-f45bf52eff6b Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When watchdog timer is expired we can know about it thought GET_STATUS ioctl option. Signed-off-by: Ivan Khoronzhuk --- drivers/watchdog/davinci_wdt.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c index 6cbf2e1..a371b2d 100644 --- a/drivers/watchdog/davinci_wdt.c +++ b/drivers/watchdog/davinci_wdt.c @@ -144,6 +144,18 @@ static unsigned int davinci_wdt_get_timeleft(struct watchdog_device *wdd) return wdd->timeout - timer_counter; } +static unsigned int davinci_wdt_status(struct watchdog_device *wdd) +{ + u32 val; + struct davinci_wdt_device *davinci_wdt = watchdog_get_drvdata(wdd); + + val = ioread32(davinci_wdt->base + WDTCR); + if (val & WDFLAG) + return WDIOF_CARDRESET; + + return 0; +} + static const struct watchdog_info davinci_wdt_info = { .options = WDIOF_KEEPALIVEPING, .identity = "DaVinci Watchdog", @@ -155,6 +167,7 @@ static const struct watchdog_ops davinci_wdt_ops = { .stop = davinci_wdt_ping, .ping = davinci_wdt_ping, .get_timeleft = davinci_wdt_get_timeleft, + .status = davinci_wdt_status, }; static int davinci_wdt_probe(struct platform_device *pdev) -- 1.7.9.5