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hwmon: (raspberrypi) Add PM suspend/resume support

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Add suspend/resume handler in order to stop firmware polling
during s2idle. This was just waking-up the system without a real
benefit.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Stefan Wahren 2024-12-02 12:58:32 +01:00 committed by Guenter Roeck
parent 4d2ffc42f7
commit c26eef8957
1 changed files with 22 additions and 0 deletions
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22
drivers/hwmon/raspberrypi-hwmon.c
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@ -128,10 +128,32 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
return 0;
}
static int rpi_hwmon_suspend(struct device *dev)
{
struct rpi_hwmon_data *data = dev_get_drvdata(dev);
cancel_delayed_work_sync(&data->get_values_poll_work);
return 0;
}
static int rpi_hwmon_resume(struct device *dev)
{
struct rpi_hwmon_data *data = dev_get_drvdata(dev);
get_values_poll(&data->get_values_poll_work.work);
return 0;
}
static DEFINE_SIMPLE_DEV_PM_OPS(rpi_hwmon_pm_ops, rpi_hwmon_suspend,
rpi_hwmon_resume);
static struct platform_driver rpi_hwmon_driver = {
.probe = rpi_hwmon_probe,
.driver = {
.name = "raspberrypi-hwmon",
.pm = pm_ptr(&rpi_hwmon_pm_ops),
},
};
module_platform_driver(rpi_hwmon_driver);