lkml.org 
[lkml]   [2020]   [Mar]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH resend] extcon: axp288: Add wakeup support
Date
On devices with an AXP288, we need to wakeup from suspend when a charger
is plugged in, so that we can do charger-type detection and so that the
axp288-charger driver, which listens for our extcon events, can configure
the input-current-limit accordingly.

Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/extcon/extcon-axp288.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c
index a7f216191493..710a3bb66e95 100644
--- a/drivers/extcon/extcon-axp288.c
+++ b/drivers/extcon/extcon-axp288.c
@@ -443,9 +443,40 @@ static int axp288_extcon_probe(struct platform_device *pdev)
/* Start charger cable type detection */
axp288_extcon_enable(info);

+ device_init_wakeup(dev, true);
+ platform_set_drvdata(pdev, info);
+
+ return 0;
+}
+
+static int __maybe_unused axp288_extcon_suspend(struct device *dev)
+{
+ struct axp288_extcon_info *info = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(info->irq[VBUS_RISING_IRQ]);
+
return 0;
}

+static int __maybe_unused axp288_extcon_resume(struct device *dev)
+{
+ struct axp288_extcon_info *info = dev_get_drvdata(dev);
+
+ /*
+ * Wakeup when a charger is connected to do charger-type
+ * connection and generate an extcon event which makes the
+ * axp288 charger driver set the input current limit.
+ */
+ if (device_may_wakeup(dev))
+ disable_irq_wake(info->irq[VBUS_RISING_IRQ]);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(axp288_extcon_pm_ops, axp288_extcon_suspend,
+ axp288_extcon_resume);
+
static const struct platform_device_id axp288_extcon_table[] = {
{ .name = "axp288_extcon" },
{},
@@ -457,6 +488,7 @@ static struct platform_driver axp288_extcon_driver = {
.id_table = axp288_extcon_table,
.driver = {
.name = "axp288_extcon",
+ .pm = &axp288_extcon_pm_ops,
},
};

--
2.26.0.rc2
\
 
 \ /
  Last update: 2020-03-23 22:59    [W:0.060 / U:0.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site