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rtc: hym8563: make the irq optional

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Sometimes the irq line is not connected to any soc-pin. This does
not hinder basic timekeeping functionality of the rtc, so probe
should not fail in this case.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Heiko Stübner 2015-06-13 12:34:04 +02:00 committed by Alexandre Belloni
parent 45b4c85b71
commit 4be1f6bbd1
2 changed files with 11 additions and 9 deletions
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2
Documentation/devicetree/bindings/rtc/haoyu,hym8563.txt
View File

@ -6,11 +6,11 @@ as well as a clock output of up to 32kHz.
Required properties: Required properties:
- compatible: should be: "haoyu,hym8563" - compatible: should be: "haoyu,hym8563"
- reg: i2c address - reg: i2c address
- interrupts: rtc alarm/event interrupt
- #clock-cells: the value should be 0 - #clock-cells: the value should be 0
Optional properties: Optional properties:
- clock-output-names: From common clock binding - clock-output-names: From common clock binding
- interrupts: rtc alarm/event interrupt
Example: Example:

2
drivers/rtc/rtc-hym8563.c
View File

@ -548,6 +548,7 @@ static int hym8563_probe(struct i2c_client *client,
return ret; return ret;
} }
if (client->irq > 0) {
ret = devm_request_threaded_irq(&client->dev, client->irq, ret = devm_request_threaded_irq(&client->dev, client->irq,
NULL, hym8563_irq, NULL, hym8563_irq,
IRQF_TRIGGER_LOW | IRQF_ONESHOT, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
@ -557,6 +558,7 @@ static int hym8563_probe(struct i2c_client *client,
client->irq, ret); client->irq, ret);
return ret; return ret;
} }
}
/* check state of calendar information */ /* check state of calendar information */
ret = i2c_smbus_read_byte_data(client, HYM8563_SEC); ret = i2c_smbus_read_byte_data(client, HYM8563_SEC);