From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johan Hovold Subject: [PATCH 10/12] rtc: omap: enable wake-up from power off Date: Thu, 9 Oct 2014 21:06:32 +0200 Message-ID: <1412881594-25678-11-git-send-email-johan@kernel.org> References: <1412881594-25678-1-git-send-email-johan@kernel.org> Return-path: In-Reply-To: <1412881594-25678-1-git-send-email-johan@kernel.org> Sender: linux-omap-owner@vger.kernel.org To: Alessandro Zummo , Tony Lindgren , =?UTF-8?q?Beno=C3=AEt=20Cousson?= Cc: Andrew Morton , Felipe Balbi , Lokesh Vutla , Guenter Roeck , Colin Foe-Parker , AnilKumar Ch , nsekhar@ti.com, t-kristo@ti.com, j-keerthy@ti.com, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, rtc-linux@googlegroups.com, linux-kernel@vger.kernel.org, Johan Hovold List-Id: devicetree@vger.kernel.org The ALARM interrupt must not be disabled during shutdown in order to be able to power up the system using an RTC alarm. Signed-off-by: Johan Hovold --- drivers/rtc/rtc-omap.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index b0319864dd42..8836c58901b5 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -670,7 +670,15 @@ static SIMPLE_DEV_PM_OPS(omap_rtc_pm_ops, omap_rtc_suspend, omap_rtc_resume); static void omap_rtc_shutdown(struct platform_device *pdev) { - rtc_write(0, OMAP_RTC_INTERRUPTS_REG); + u8 mask; + + /* + * Keep the ALARM interrupt enabled to allow the system to power up on + * alarm events. + */ + mask = rtc_read(OMAP_RTC_INTERRUPTS_REG); + mask &= OMAP_RTC_INTERRUPTS_IT_ALARM; + rtc_write(mask, OMAP_RTC_INTERRUPTS_REG); } MODULE_ALIAS("platform:omap_rtc"); -- 2.0.4