From mboxrd@z Thu Jan 1 00:00:00 1970 From: johan@kernel.org (Johan Hovold) Date: Tue, 21 Oct 2014 19:38:02 +0200 Subject: [PATCH v2 16/20] rtc: omap: enable wake-up from power off In-Reply-To: <1413913086-12730-1-git-send-email-johan@kernel.org> References: <1412881594-25678-1-git-send-email-johan@kernel.org> <1413913086-12730-1-git-send-email-johan@kernel.org> Message-ID: <1413913086-12730-17-git-send-email-johan@kernel.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.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 | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index f6c93f877857..cb5ef3c845d1 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -687,8 +687,15 @@ static SIMPLE_DEV_PM_OPS(omap_rtc_pm_ops, omap_rtc_suspend, omap_rtc_resume); static void omap_rtc_shutdown(struct platform_device *pdev) { struct omap_rtc *rtc = platform_get_drvdata(pdev); + u8 mask; - rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0); + /* + * Keep the ALARM interrupt enabled to allow the system to power up on + * alarm events. + */ + mask = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); + mask &= OMAP_RTC_INTERRUPTS_IT_ALARM; + rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, mask); } static struct platform_driver omap_rtc_driver = { -- 2.0.4