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rtc: pcf8523: add suspend handlers for alarm IRQ 

Ensure the RTC is able to wake up the system from suspend.

Link: https://lore.kernel.org/r/20240227211833.1820800-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2024-02-27 22:18:32 +01:00
parent 50891bd19f
commit 787bcc982c
1 changed files with 25 additions and 0 deletions
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25
drivers/rtc/rtc-pcf8523.c
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@ -370,6 +370,30 @@ static int pcf8523_rtc_set_offset(struct device *dev, long offset)
return regmap_write(pcf8523->regmap, PCF8523_REG_OFFSET, value);
}
#ifdef CONFIG_PM_SLEEP
static int pcf8523_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
if (client->irq > 0 && device_may_wakeup(dev))
enable_irq_wake(client->irq);
return 0;
}
static int pcf8523_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
if (client->irq > 0 && device_may_wakeup(dev))
disable_irq_wake(client->irq);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(pcf8523_pm, pcf8523_suspend, pcf8523_resume);
static const struct rtc_class_ops pcf8523_rtc_ops = {
.read_time = pcf8523_rtc_read_time,
.set_time = pcf8523_rtc_set_time,
@ -487,6 +511,7 @@ static struct i2c_driver pcf8523_driver = {
.driver = {
.name = "rtc-pcf8523",
.of_match_table = pcf8523_of_match,
.pm = &pcf8523_pm,
},
.probe = pcf8523_probe,
.id_table = pcf8523_id,