rtc: hym8563: make the irq optional
From: Heiko Stuebner <heiko@...> Date: Wed, 10 Jun 2015 00:40:19 +0200
Commit-Message
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@...>
Patch-Comment
.../devicetree/bindings/rtc/haoyu,hym8563.txt | 2 +- drivers/rtc/rtc-hym8563.c | 18 ++++++++++-------- 2 files changed, 11 insertions(+), 9 deletions(-)
Statistics
- 11 lines added
- 9 lines removed
Changes
----------- Documentation/devicetree/bindings/rtc/haoyu,hym8563.txt ------------
index 5c199ee..a8934fe 100644
@@ -6,11 +6,11 @@ as well as a clock output of up to 32kHz.
Required properties:
- compatible: should be: "haoyu,hym8563"
- reg: i2c address
- #clock-cells: the value should be 0
Optional properties:
- clock-output-names: From common clock binding
+- interrupts: rtc alarm/event interrupt
Example:
-------------------------- drivers/rtc/rtc-hym8563.c ---------------------------
index 0f710e9..e9da795 100644
@@ -548,14 +548,16 @@ static int hym8563_probe(struct i2c_client *client,
return ret;
}
+ if (client->irq > 0) {
+ ret = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, hym8563_irq,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ client->name, hym8563);
+ if (ret < 0) {
+ dev_err(&client->dev, "irq %d request failed, %d\n",
+ client->irq, ret);
+ return ret;
+ }
}
/* check state of calendar information */