From: Martin Kaiser <martin@kaiser.cx>
To: Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Shawn Guo <shawnguo@kernel.org>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>
Cc: linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org,
Martin Kaiser <martin@kaiser.cx>
Subject: [PATCH v2] rtc: imxdi: add wakeup support
Date: Wed, 5 May 2021 18:30:09 +0200 [thread overview]
Message-ID: <20210505163009.14252-1-martin@kaiser.cx> (raw)
In-Reply-To: <20210430093210.7034-1-martin@kaiser.cx>
The DryIce-based RTC supports alarms that trigger an interrupt.
Add an option to configure this interrupt as a wakeup source that wakes the
system up from standby mode.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
---
v2:
- unconditionally declare rtc-imxdi as wakeup source
- use dev_pm_set_wake_irq instead of manually coding suspend and resume
simple test (no need to configure the wakeup source via sysfs any more)
[root@board ]# rtcwake -s 3 -m mem
wakeup from "mem" at Fri Apr 30 09:23:52 2021
...
[root@board ]#
drivers/rtc/rtc-imxdi.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/rtc/rtc-imxdi.c b/drivers/rtc/rtc-imxdi.c
index c1806f4d68e7..4b712e5ab08a 100644
--- a/drivers/rtc/rtc-imxdi.c
+++ b/drivers/rtc/rtc-imxdi.c
@@ -24,6 +24,7 @@
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
#include <linux/rtc.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
@@ -811,6 +812,9 @@ static int __init dryice_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, imxdi);
+ device_init_wakeup(&pdev->dev, true);
+ dev_pm_set_wake_irq(&pdev->dev, norm_irq);
+
imxdi->rtc->ops = &dryice_rtc_ops;
imxdi->rtc->range_max = U32_MAX;
--
2.20.1
next prev parent reply other threads:[~2021-05-05 16:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-30 9:32 [PATCH] rtc: imxdi: add wakeup support Martin Kaiser
2021-05-01 10:05 ` Alexandre Belloni
2021-05-04 10:08 ` Martin Kaiser
2021-05-04 12:12 ` Alexandre Belloni
2021-05-05 16:25 ` Martin Kaiser
2021-05-05 16:30 ` Martin Kaiser [this message]
2021-05-05 17:34 ` [PATCH v2] " Alexandre Belloni
2021-05-11 16:12 ` [PATCH v3] " Martin Kaiser
2021-05-24 22:43 ` Alexandre Belloni
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