Commit 4c9a91b9 authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

pcf8563: add wakeup-source support 

In some platforms, the RTC is able to wake up the system but is not
directly connected to an IRQ. Add wakeup-source property support to be able
to express this in the Device Tree.

Link: https://lore.kernel.org/r/20240426225821.448963-1-alexandre.belloni@bootlin.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent eca1b3c2

drivers/rtc/rtc-pcf8563.c

+7 −2
Original line number Diff line number Diff line
@@ -527,7 +527,6 @@ static int pcf8563_probe(struct i2c_client *client) 


	i2c_set_clientdata(client, pcf8563);

	pcf8563->client = client;

	device_set_wakeup_capable(&client->dev, 1);



	/* Set timer to lowest frequency to save power (ref Haoyu datasheet) */

	buf = PCF8563_TMRC_1_60;
@@ -553,6 +552,7 @@ static int pcf8563_probe(struct i2c_client *client) 
	/* the pcf8563 alarm only supports a minute accuracy */

	set_bit(RTC_FEATURE_ALARM_RES_MINUTE, pcf8563->rtc->features);

	clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, pcf8563->rtc->features);

	clear_bit(RTC_FEATURE_ALARM, pcf8563->rtc->features);

	pcf8563->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;

	pcf8563->rtc->range_max = RTC_TIMESTAMP_END_2099;

	pcf8563->rtc->set_start_time = true;
@@ -573,7 +573,12 @@ static int pcf8563_probe(struct i2c_client *client) 
			return err;

		}

	} else {

		clear_bit(RTC_FEATURE_ALARM, pcf8563->rtc->features);

		client->irq = 0;

	}



	if (client->irq > 0 || device_property_read_bool(&client->dev, "wakeup-source")) {

		device_init_wakeup(&client->dev, true);

		set_bit(RTC_FEATURE_ALARM, pcf8563->rtc->features);

	}



	err = devm_rtc_register_device(pcf8563->rtc);