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Commit 7a1fe407 authored by Fabien Lahoudere's avatar Fabien Lahoudere Committed by Alexandre Belloni
Browse files

rtc: s35390a: implement ioctls 



Implements RTC_VL_READ and RTC_VL_CLR ioctls.

Signed-off-by: default avatarFabien Lahoudere <fabien.lahoudere@collabora.co.uk>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent 16486d0c

drivers/rtc/rtc-s35390a.c

+31 −1
Original line number Diff line number Diff line
@@ -404,12 +404,42 @@ static int s35390a_rtc_set_time(struct device *dev, struct rtc_time *tm) 
	return s35390a_set_datetime(to_i2c_client(dev), tm);

}



static int s35390a_rtc_ioctl(struct device *dev, unsigned int cmd,

			     unsigned long arg)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct s35390a *s35390a = i2c_get_clientdata(client);

	char sts;

	int err;



	switch (cmd) {

	case RTC_VL_READ:

		/* s35390a_reset set lowvoltage flag and init RTC if needed */

		err = s35390a_read_status(s35390a, &sts);

		if (err < 0)

			return err;

		if (copy_to_user((void __user *)arg, &err, sizeof(int)))

			return -EFAULT;

		break;

	case RTC_VL_CLR:

		/* update flag and clear register */

		err = s35390a_init(s35390a);

		if (err < 0)

			return err;

		break;

	default:

		return -ENOIOCTLCMD;

	}



	return 0;

}



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,

};



static struct i2c_driver s35390a_driver;