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pcf8563: add wakeup-source support

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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: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2024-04-27 00:58:21 +02:00
parent eca1b3c2e7
commit 4c9a91b94c
1 changed files with 7 additions and 2 deletions
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9
drivers/rtc/rtc-pcf8563.c
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@ -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);