linux-kernel - [PATCH v1 1/2] rtc: tps65910: Support wakeup-source property

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Message-Id: <20210119235949.15601-1-digetx@gmail.com>
Date:   Wed, 20 Jan 2021 02:59:48 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter Geis <pgwipeout@...il.com>,
        Matt Merhar <mattmerhar@...tonmail.com>
Cc:     linux-rtc@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] rtc: tps65910: Support wakeup-source property

TPS65910 is a PMIC MFD device and RTC is one of its functions. The
wakeup-source DT property is specified for the parent MFD device and we
need to use this property for the RTC in order to allow to use RTC alarm
for waking up system from suspend by default, instead of requiring user
to enable wakeup manually via sysfs.

Tested-by: Peter Geis <pgwipeout@...il.com> # Ouya T30
Tested-by: Matt Merhar <mattmerhar@...tonmail.com> # Ouya T30
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/rtc/rtc-tps65910.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c
index 2d87b62826a8..f94899d2d5b3 100644
--- a/drivers/rtc/rtc-tps65910.c
+++ b/drivers/rtc/rtc-tps65910.c
@@ -426,7 +426,11 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
 
 	tps_rtc->irq = irq;
 	if (irq != -1) {
-		device_set_wakeup_capable(&pdev->dev, 1);
+		if (device_property_present(tps65910->dev, "wakeup-source"))
+			device_init_wakeup(&pdev->dev, 1);
+		else
+			device_set_wakeup_capable(&pdev->dev, 1);
+
 		tps_rtc->rtc->ops = &tps65910_rtc_ops;
 	} else
 		tps_rtc->rtc->ops = &tps65910_rtc_ops_noirq;
-- 
2.29.2