[PATCH v5 3/6] rtc: s35390a: Fix alarm not disabling

[Alexandre Belloni]

On 19/08/2026 22:05:55+0000, Markus Probst wrote:
> Implement alarm_irq_enable callback.
> 
> Fixes: 542dd33a4925 ("drivers/rtc/rtc-s35390a.c: add wakealarm support for rtc-s35390A rtc chip")
> Signed-off-by: Markus Probst <markus.probst at posteo.de>
> ---
>  drivers/rtc/rtc-s35390a.c | 29 ++++++++++++++++++++++++-----
>  1 file changed, 24 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c
> index 4cfe7034c516..575bb256eb25 100644
> --- a/drivers/rtc/rtc-s35390a.c
> +++ b/drivers/rtc/rtc-s35390a.c
> @@ -270,6 +270,24 @@ static int s35390a_rtc_read_time(struct device *dev, struct rtc_time *tm)
>  	return 0;
>  }
>  
> +static int s35390a_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
> +{
> +	struct s35390a *s35390a = dev_get_drvdata(dev);
> +	u8 sts;
> +	int err;
> +
> +	if (enabled)
> +		sts = S35390A_INT2_MODE_ALARM;
> +	else
> +		sts = S35390A_INT2_MODE_NOINTR;
> +
> +	err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts));
> +	if (err < 0)
> +		return err;
> +
> +	return 0;
> +}


You can definitively call this from s35390a_rtc_set_alarm instead of
duplicating code.

> +
>  static int s35390a_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
>  {
>  	struct i2c_client *client = to_i2c_client(dev);
> @@ -410,11 +428,12 @@ static int s35390a_rtc_ioctl(struct device *dev, unsigned int cmd,
>  }
>  
>  static const struct rtc_class_ops s35390a_rtc_ops = {
> -	.read_time	= s35390a_rtc_read_time,
> -	.set_time	= s35390a_rtc_set_time,
> -	.set_alarm	= s35390a_rtc_set_alarm,
> -	.read_alarm	= s35390a_rtc_read_alarm,
> -	.ioctl          = s35390a_rtc_ioctl,
> +	.read_time		= s35390a_rtc_read_time,
> +	.set_time		= s35390a_rtc_set_time,
> +	.set_alarm		= s35390a_rtc_set_alarm,
> +	.read_alarm		= s35390a_rtc_read_alarm,
> +	.alarm_irq_enable	= s35390a_rtc_alarm_irq_enable,
> +	.ioctl			= s35390a_rtc_ioctl,
>  };
>  
>  static int s35390a_nvmem_read(void *priv, unsigned int offset, void *val,
> 
> -- 
> 2.54.0
> 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com