From c4f2382f358143d296ebe5837ec9736ffbe6e937 Mon Sep 17 00:00:00 2001 From: Deepak Sikri Date: Mon, 17 Dec 2012 16:02:34 -0800 Subject: [PATCH] rtc: rtc-spear: Provide flag for no support of UIE mode The applications can set the RTC hardware to trigger interrupts in one of three modes: * AIE: Alarm interrupt * UIE: Update interrupt (ie: once per second) * PIE: Periodic interrupt (sub-second irqs) The above defined 3 modes are to be supported in the RTC HW in form of interrupts. The SPEAr RTC hardware does not support the later two modes. There have been refinements in the RTC core in mainline related to use of timer queue infrastructure to manage events in RTC. Please refer the below mentioned patch for details: * RTC: Rework RTC code to use timerqueue for events * SHA ID: 451a0151f7c997c5122233cfdf83d3b4749f5d30 There have been provisions added to support hardware that do not have support the UIE mode. Please refer the following patch. * rtc: Provide flag for rtc devices that don't support UIE * SHA ID: 180799beb80a3614ba86ee2ea02c07a7c633f6bc The patch makes use of the provision defined in the above patch to update the hardware status of UIE mode. Signed-off-by: Deepak Sikri Signed-off-by: Viresh Kumar Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-spear.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c index c96f56cfc1d86..141fc945295f0 100644 --- a/drivers/rtc/rtc-spear.c +++ b/drivers/rtc/rtc-spear.c @@ -411,6 +411,8 @@ static int __devinit spear_rtc_probe(struct platform_device *pdev) goto err_disable_clock; } + config->rtc->uie_unsupported = 1; + if (!device_can_wakeup(&pdev->dev)) device_init_wakeup(&pdev->dev, 1); -- 2.39.5