linux-kernel - [PATCH v2 2/2] media: rc: gpio-ir-recv: Fix support for wake-up

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Date:   Fri, 24 Mar 2023 13:38:33 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Matthew Lear <matthew.lear@...adcom.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Sean Young <sean@...s.org>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Ravi Kumar V <kumarrav@...eaurora.org>,
        linux-media@...r.kernel.org (open list:MEDIA INPUT INFRASTRUCTURE
        (V4L/DVB)),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS)
Subject: [PATCH v2 2/2] media: rc: gpio-ir-recv: Fix support for wake-up

The driver was intended from the start to be a wake-up source for the
system, however due to the absence of a suitable call to
device_set_wakeup_capable(), the device_may_wakeup() call used to decide
whether to enable the GPIO interrupt as a wake-up source would never
happen. Lookup the DT standard "wakeup-source" property and call
device_init_wakeup() to ensure the device is flagged as being wakeup
capable.

Reported-by: Matthew Lear <matthew.lear@...adcom.com>
Fixes: fd0f6851eb46 ("[media] rc: Add support for GPIO based IR Receiver driver")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/media/rc/gpio-ir-recv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/rc/gpio-ir-recv.c b/drivers/media/rc/gpio-ir-recv.c
index 8dbe780dae4e..41ef8cdba28c 100644
--- a/drivers/media/rc/gpio-ir-recv.c
+++ b/drivers/media/rc/gpio-ir-recv.c
@@ -103,6 +103,8 @@ static int gpio_ir_recv_probe(struct platform_device *pdev)
 		rcdev->map_name = RC_MAP_EMPTY;
 
 	gpio_dev->rcdev = rcdev;
+	if (of_property_read_bool(np, "wakeup-source"))
+		device_init_wakeup(dev, true);
 
 	rc = devm_rc_register_device(dev, rcdev);
 	if (rc < 0) {
-- 
2.34.1