Re: [PATCH v2 4/5] rtc: s35390a: Add pinctrl

[Markus Probst <markus.probst@posteo.de>]

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On Wed, 2026-08-05 at 00:20 +0200, Alexandre Belloni wrote:
> On 01/08/2026 18:43:04+0000, Markus Probst wrote:
> > Allow configuration of other output modes than wake alarm, including:
> > - keeping the previous configured mode
> > - disabling output
> > - custom frequency
> > - minute periodical interrupt (1: 50% duty, 2: 7.81 ms)
> > - raw 32.768 kHz output
> > 
> > Allow use of interrupt signal 1.
> 
> There are a lot of checkpatch --strict warnings taht can be fixed. This
> patch also needs to be reviewed by the pinctrl maintainers.
Sashiko found quite a lot of issues too.

I also wrongfully used pinconf instead of pinmux, for the pin function
assignment.

I will try to create a new revision today/tomorrow (depending on the
timezone).

Thanks
- Markus Probst

> 
> > 
> > Signed-off-by: Markus Probst <markus.probst@posteo.de>
> > ---
> >  drivers/rtc/Kconfig       |   3 +
> >  drivers/rtc/rtc-s35390a.c | 403 +++++++++++++++++++++++++++++++++++++++-------
> >  2 files changed, 349 insertions(+), 57 deletions(-)
> > 
> > diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> > index 01def8231873..054ff134d84e 100644
> > --- a/drivers/rtc/Kconfig
> > +++ b/drivers/rtc/Kconfig
> > @@ -668,7 +668,10 @@ config RTC_DRV_RC5T619
> >  
> >  config RTC_DRV_S35390A
> >  	tristate "Seiko Instruments S-35390A"
> > +	depends on OF
> > +	depends on PINCTRL
> >  	select BITREVERSE
> > +	select GENERIC_PINCONF
> >  	help
> >  	  If you say yes here you will get support for the Seiko
> >  	  Instruments S-35390A.
> > diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c
> > index fbf5471eb3d0..fc0dbce0e8f4 100644
> > --- a/drivers/rtc/rtc-s35390a.c
> > +++ b/drivers/rtc/rtc-s35390a.c
> > @@ -12,11 +12,18 @@
> >  #include <linux/bcd.h>
> >  #include <linux/slab.h>
> >  #include <linux/delay.h>
> > +#include <linux/pinctrl/pinctrl.h>
> > +#include <linux/pinctrl/pinconf.h>
> > +#include <linux/pinctrl/pinconf-generic.h>
> > +#include <dt-bindings/rtc/s35390a.h>
> > +
> > +#define DRIVER_NAME "rtc-s35390a"
> >  
> >  #define S35390A_CMD_STATUS1	0
> >  #define S35390A_CMD_STATUS2	1
> >  #define S35390A_CMD_TIME1	2
> >  #define S35390A_CMD_TIME2	3
> > +#define S35390A_CMD_INT1_REG1	4
> >  #define S35390A_CMD_INT2_REG1	5
> >  #define S35390A_CMD_FREE_REG    7
> >  
> > @@ -36,19 +43,31 @@
> >  #define S35390A_FLAG_POC	BIT(0)
> >  #define S35390A_FLAG_BLD	BIT(1)
> >  #define S35390A_FLAG_INT2	BIT(2)
> > +#define S35390A_FLAG_INT1	BIT(3)
> >  #define S35390A_FLAG_24H	BIT(6)
> >  #define S35390A_FLAG_RESET	BIT(7)
> >  
> >  /* flag for STATUS2 */
> >  #define S35390A_FLAG_TEST	BIT(0)
> >  
> > +
> > +#define S35390A_INT_MODE_NOINTR	0x00
> > +
> >  /* INT2 pin output mode */
> >  #define S35390A_INT2_MODE_MASK		0x0E
> > -#define S35390A_INT2_MODE_NOINTR	0x00
> >  #define S35390A_INT2_MODE_ALARM		BIT(1) /* INT2AE */
> >  #define S35390A_INT2_MODE_PMIN_EDG	BIT(2) /* INT2ME */
> >  #define S35390A_INT2_MODE_FREQ		BIT(3) /* INT2FE */
> > -#define S35390A_INT2_MODE_PMIN		(BIT(3) | BIT(2)) /* INT2FE | INT2ME */
> > +#define S35390A_INT2_MODE_PMIN1		(BIT(3) | BIT(2)) /* INT2FE | INT2ME */
> > +
> > +/* INT1 pin output mode */
> > +#define S35390A_INT1_MODE_MASK		0xF0
> > +#define S35390A_INT1_MODE_ALARM		BIT(5) /* INT1AE */
> > +#define S35390A_INT1_MODE_PMIN_EDG	BIT(6) /* INT1ME */
> > +#define S35390A_INT1_MODE_FREQ		BIT(7) /* INT1FE */
> > +#define S35390A_INT1_MODE_PMIN1		(BIT(7) | BIT(6)) /* INT1FE | INT1ME */
> > +#define S35390A_INT1_MODE_PMIN2		(BIT(7) | BIT(6) | BIT(5)) /* INT1FE | INT1ME | INT1AE */
> > +#define S35390A_INT1_MODE_32768KHZ	BIT(4) /* 32kE */
> >  
> >  static const struct i2c_device_id s35390a_id[] = {
> >  	{ .name = "s35390a" },
> > @@ -64,8 +83,15 @@ MODULE_DEVICE_TABLE(of, s35390a_of_match);
> >  
> >  struct s35390a {
> >  	struct i2c_client *client[8];
> > -	struct rtc_time tm_alarm;
> > +	struct rtc_device *rtc;
> > +	struct pinctrl_dev *pinctrl;
> > +	struct rtc_wkalrm alarm;
> >  	int twentyfourhour;
> > +
> > +	struct mutex mode_lock;
> > +	bool mode_init;
> > +	int mode[2];
> > +	u8 freq[2];
> >  };
> >  
> >  static int s35390a_set_reg(struct s35390a *s35390a, int reg, u8  *buf, int len)
> > @@ -283,33 +309,33 @@ static int s35390a_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
> >  		alm->time.tm_min, alm->time.tm_hour, alm->time.tm_mday,
> >  		alm->time.tm_mon, alm->time.tm_year, alm->time.tm_wday);
> >  
> > -	/* disable interrupt (which deasserts the irq line) */
> > -	err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts));
> > -	if (err < 0)
> > -		return err;
> > +	guard(mutex)(&s35390a->mode_lock);
> >  
> > -	/* clear pending interrupt (in STATUS1 only), if any */
> > -	err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, &sts, sizeof(sts));
> > +	err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts));
> >  	if (err < 0)
> >  		return err;
> >  
> > -	if (alm->enabled)
> > -		sts = S35390A_INT2_MODE_ALARM;
> > -	else
> > -		sts = S35390A_INT2_MODE_NOINTR;
> > +	/* disable interrupt (which deasserts the irq line) */
> > +	if (s35390a->mode[0] == S35390A_MODE_WAKEUP)
> > +		sts = (sts & ~S35390A_INT1_MODE_MASK) | S35390A_INT_MODE_NOINTR;
> > +
> > +	if (s35390a->mode[1] == S35390A_MODE_WAKEUP)
> > +		sts = (sts & ~S35390A_INT2_MODE_MASK) | S35390A_INT_MODE_NOINTR;
> >  
> > -	/* set interrupt mode*/
> >  	err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts));
> >  	if (err < 0)
> >  		return err;
> >  
> > +	if (!alm->enabled)
> > +		goto end;
> > +
> >  	if (alm->time.tm_wday != -1)
> >  		buf[S35390A_ALRM_BYTE_WDAY] = bin2bcd(alm->time.tm_wday) | 0x80;
> >  	else
> >  		buf[S35390A_ALRM_BYTE_WDAY] = 0;
> >  
> >  	buf[S35390A_ALRM_BYTE_HOURS] = s35390a_hr2reg(s35390a,
> > -			alm->time.tm_hour) | 0x80;
> > +						      alm->time.tm_hour) | 0x80;
> >  	buf[S35390A_ALRM_BYTE_MINS] = bin2bcd(alm->time.tm_min) | 0x80;
> >  
> >  	if (alm->time.tm_hour >= 12)
> > @@ -318,13 +344,33 @@ static int s35390a_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
> >  	for (i = 0; i < 3; ++i)
> >  		buf[i] = bitrev8(buf[i]);
> >  
> > -	err = s35390a_set_reg(s35390a, S35390A_CMD_INT2_REG1, buf,
> > -								sizeof(buf));
> > +	/* set interrupt mode */
> > +	if (s35390a->mode[0] == S35390A_MODE_WAKEUP)
> > +		sts = (sts & ~S35390A_INT1_MODE_MASK) | S35390A_INT1_MODE_ALARM;
> > +
> > +	if (s35390a->mode[1] == S35390A_MODE_WAKEUP)
> > +		sts = (sts & ~S35390A_INT2_MODE_MASK) | S35390A_INT2_MODE_ALARM;
> > +
> > +	err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts));
> > +	if (err < 0)
> > +		return err;
> > +
> > +	if (s35390a->mode[0] == S35390A_MODE_WAKEUP) {
> > +		err = s35390a_set_reg(s35390a, S35390A_CMD_INT1_REG1, buf, sizeof(buf));
> > +		if (err)
> > +			return err;
> > +	}
> > +
> > +	if (s35390a->mode[1] == S35390A_MODE_WAKEUP) {
> > +		err = s35390a_set_reg(s35390a, S35390A_CMD_INT2_REG1, buf, sizeof(buf));
> > +		if (err)
> > +			return err;
> > +	}
> >  
> > -	if (!err)
> > -		s35390a->tm_alarm = alm->time;
> > +end:
> > +	s35390a->alarm = *alm;
> >  
> > -	return err;
> > +	return 0;
> >  }
> >  
> >  static int s35390a_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
> > @@ -332,24 +378,35 @@ static int s35390a_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
> >  	struct i2c_client *client = to_i2c_client(dev);
> >  	struct s35390a *s35390a = i2c_get_clientdata(client);
> >  	u8 buf[3], sts;
> > -	int i, err;
> > +	int i, err, reg;
> > +
> > +	guard(mutex)(&s35390a->mode_lock);
> >  
> >  	err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts));
> >  	if (err < 0)
> >  		return err;
> >  
> > -	if ((sts & S35390A_INT2_MODE_MASK) != S35390A_INT2_MODE_ALARM) {
> > +	if (s35390a->mode[1] == S35390A_MODE_WAKEUP
> > +		&& (sts & S35390A_INT2_MODE_MASK) == S35390A_INT2_MODE_ALARM) {
> > +
> > +		reg = S35390A_CMD_INT2_REG1;
> > +	} else if (s35390a->mode[0] == S35390A_MODE_WAKEUP
> > +		&& (sts & S35390A_INT1_MODE_MASK) == S35390A_INT1_MODE_ALARM) {
> > +
> > +		reg = S35390A_CMD_INT1_REG1;
> > +	} else {
> >  		/*
> >  		 * When the alarm isn't enabled, the register to configure
> >  		 * the alarm time isn't accessible.
> >  		 */
> >  		alm->enabled = 0;
> > +		alm->time = s35390a->alarm.time;
> >  		return 0;
> > -	} else {
> > -		alm->enabled = 1;
> >  	}
> >  
> > -	err = s35390a_get_reg(s35390a, S35390A_CMD_INT2_REG1, buf, sizeof(buf));
> > +	alm->enabled = 1;
> > +
> > +	err = s35390a_get_reg(s35390a, reg, buf, sizeof(buf));
> >  	if (err < 0)
> >  		return err;
> >  
> > @@ -358,7 +415,7 @@ static int s35390a_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
> >  		buf[i] = bitrev8(buf[i]);
> >  
> >  	/*
> > -	 * B0 of the three matching registers is an enable flag. Iff it is set
> > +	 * B0 of the three matching registers is an enable flag. If it is set
> >  	 * the configured value is used for matching.
> >  	 */
> >  	if (buf[S35390A_ALRM_BYTE_WDAY] & 0x80)
> > @@ -388,10 +445,10 @@ static int s35390a_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled
> >  	struct s35390a *s35390a = dev_get_drvdata(dev);
> >  	struct rtc_wkalrm alm;
> >  
> > -	alm.enabled = enabled;
> > -
> >  	if (enabled)
> > -		alm.time = s35390a->tm_alarm;
> > +		alm = s35390a->alarm;
> > +
> > +	alm.enabled = enabled;
> >  
> >  	return s35390a_rtc_set_alarm(dev, &alm);
> >  }
> > @@ -452,13 +509,241 @@ static int s35390a_nvmem_write(void *priv, unsigned int offset, void *val,
> >  	return s35390a_set_reg(s35390a, S35390A_CMD_FREE_REG, val, bytes);
> >  }
> >  
> > +static int s35390a_pinctrl_get_groups_count(struct pinctrl_dev *pctldev)
> > +{
> > +	return 0;
> > +}
> > +
> > +static const char *s35390a_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
> > +						  unsigned int group)
> > +{
> > +	return NULL;
> > +}
> > +
> > +static const struct pinctrl_pin_desc s35390a_pins_desc[] = {
> > +	PINCTRL_PIN(0, "int1"),
> > +	PINCTRL_PIN(1, "int2"),
> > +};
> > +
> > +static const struct pinctrl_ops s35390a_pinctrl_ops = {
> > +	.get_groups_count = s35390a_pinctrl_get_groups_count,
> > +	.get_group_name = s35390a_pinctrl_get_group_name,
> > +	.dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
> > +	.dt_free_map = pinconf_generic_dt_free_map,
> > +};
> > +
> > +#define PIN_CONFIG_MODE		(PIN_CONFIG_END + 1)
> > +#define PIN_CONFIG_FREQ		(PIN_CONFIG_END + 2)
> > +
> > +static const struct pinconf_generic_params s35390a_pinconf_params[] = {
> > +	{"sii,mode", PIN_CONFIG_MODE},
> > +	{"sii,frequency", PIN_CONFIG_FREQ},
> > +};
> > +
> > +static int s35390a_set_freq(struct s35390a *s35390a, int pin, int freq)
> > +{
> > +	int err, reg;
> > +	u8 buf;
> > +
> > +	reg = pin == 0 ? S35390A_CMD_INT1_REG1 : S35390A_CMD_INT2_REG1;
> > +
> > +	buf = bitrev8(freq);
> > +
> > +	err = s35390a_set_reg(s35390a, reg, &buf, 1);
> > +	if (err < 0)
> > +		return err;
> > +	return 0;
> > +}
> > +
> > +static int s35390a_update_mode(struct s35390a *s35390a, int pin, int mode, int freq)
> > +{
> > +	int err;
> > +	u8 buf, status1, flag, mask;
> > +	bool update_irq = false;
> > +
> > +	mask = pin == 0 ? S35390A_INT1_MODE_MASK : S35390A_INT2_MODE_MASK;
> > +
> > +	s35390a->mode_init = true;
> > +
> > +	guard(mutex)(&s35390a->mode_lock);
> > +
> > +	dev_dbg(&s35390a->client[0]->dev, "%s: pin=%d mode=%d\n",
> > +			__func__, pin, mode);
> > +
> > +	if (mode == S35390A_MODE_FREQ) {
> > +		if (freq & ~S35390A_FREQ_MASK) {
> > +			dev_err(&s35390a->client[0]->dev, "Unsupported frequency %u\n", freq);
> > +			return -EINVAL;
> > +		}
> > +	} else
> > +		freq = 0;
> > +
> > +	if (mode == s35390a->mode[pin] && freq == s35390a->freq[pin])
> > +		return 0;
> > +
> > +	s35390a->mode[pin] = mode;
> > +	s35390a->freq[pin] = freq;
> > +
> > +	if (mode == S35390A_MODE_IGNORE)
> > +		return 0;
> > +
> > +	err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1);
> > +	if (err < 0) {
> > +		dev_err(&s35390a->client[0]->dev, "error reading status\n");
> > +		return err;
> > +	}
> > +
> > +	switch (mode) {
> > +	case S35390A_MODE_DISABLE:
> > +	case S35390A_MODE_ALARM: /* not implemented */
> > +		buf = (buf & ~mask) | S35390A_INT_MODE_NOINTR;
> > +		break;
> > +	case S35390A_MODE_WAKEUP:
> > +		flag = pin == 0 ? S35390A_INT1_MODE_ALARM : S35390A_INT2_MODE_ALARM;
> > +		if ((buf & mask) != flag) {
> > +			buf = (buf & ~mask) | S35390A_INT_MODE_NOINTR;
> > +			break;
> > +		}
> > +
> > +		err = s35390a_read_status(s35390a, &status1);
> > +		if (err < 0) {
> > +			dev_err(&s35390a->client[0]->dev, "error reading status\n");
> > +			return err;
> > +		}
> > +
> > +		flag = pin == 0 ? S35390A_FLAG_INT1 : S35390A_FLAG_INT2;
> > +
> > +		/* disable alarm */
> > +		if (status1 & flag) {
> > +			buf = (buf & ~mask) | S35390A_INT_MODE_NOINTR;
> > +			update_irq = true;
> > +		}
> > +
> > +		break;
> > +	case S35390A_MODE_FREQ:
> > +		flag = pin == 0 ? S35390A_INT1_MODE_FREQ : S35390A_INT2_MODE_FREQ;
> > +		buf = (buf & ~mask) | flag;
> > +		break;
> > +	case S35390A_MODE_PMIN1:
> > +		flag = pin == 0 ? S35390A_INT1_MODE_PMIN1 : S35390A_INT2_MODE_PMIN1;
> > +		buf = (buf & ~mask) | flag;
> > +		break;
> > +
> > +	/* INT1 only modes */
> > +	case S35390A_MODE_PMIN2:
> > +		buf = (buf & ~mask) | S35390A_INT1_MODE_PMIN2;
> > +		break;
> > +	case S35390A_MODE_32768KHZ:
> > +		buf = (buf & ~mask) | S35390A_INT1_MODE_32768KHZ;
> > +		break;
> > +	}
> > +
> > +	err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1);
> > +	if (err < 0) {
> > +		dev_err(&s35390a->client[0]->dev, "error setting interrupts\n");
> > +		return err;
> > +	}
> > +
> > +	if (freq) {
> > +		err = s35390a_set_freq(s35390a, pin, freq);
> > +		if (err < 0) {
> > +			dev_err(&s35390a->client[0]->dev, "error setting frequency\n");
> > +			return err;
> > +		}
> > +	}
> > +
> > +	if (update_irq)
> > +		rtc_update_irq(s35390a->rtc, 1, RTC_AF);
> > +
> > +	return 0;
> > +}
> > +
> > +static int s35390a_pinconf_get(struct pinctrl_dev *pctldev,
> > +			       unsigned int pin, unsigned long *config)
> > +{
> > +	struct s35390a *s35390a = pinctrl_dev_get_drvdata(pctldev);
> > +	unsigned int param = pinconf_to_config_param(*config);
> > +	u16 arg;
> > +
> > +	switch (param) {
> > +	case PIN_CONFIG_MODE:
> > +		arg = s35390a->mode[pin];
> > +		break;
> > +	case PIN_CONFIG_FREQ:
> > +		arg = s35390a->freq[pin];
> > +		break;
> > +	default:
> > +		return -EOPNOTSUPP;
> > +	}
> > +
> > +	*config = pinconf_to_config_packed(param, arg);
> > +
> > +	return 0;
> > +}
> > +
> > +static int s35390a_pinconf_set(struct pinctrl_dev *pctldev,
> > +			       unsigned int pin, unsigned long *configs,
> > +			       unsigned int num_configs)
> > +{
> > +	struct s35390a *s35390a = pinctrl_dev_get_drvdata(pctldev);
> > +	unsigned int param;
> > +	u32 param_val;
> > +	int i, mode, freq = 0;
> > +
> > +	mode = pin == 0 ? S35390A_MODE_IGNORE : S35390A_MODE_WAKEUP;
> > +
> > +	for (i = 0; i < num_configs; i++) {
> > +		param = pinconf_to_config_param(configs[0]);
> > +		param_val = pinconf_to_config_argument(configs[0]);
> > +
> > +		switch (param) {
> > +		case PIN_CONFIG_MODE:
> > +			if (param_val <= (pin == 0 ? S35390A_MODE_INT1_MAX : S35390A_MODE_INT2_MAX))
> > +				mode = param_val;
> > +			else {
> > +				dev_err(&s35390a->client[0]->dev, "Unsupported pin mode %u\n",
> > +					param_val);
> > +				return -EINVAL;
> > +			}
> > +			break;
> > +		case PIN_CONFIG_FREQ:
> > +			freq = param_val;
> > +			break;
> > +		default:
> > +			dev_err(&s35390a->client[0]->dev, "Property %u not supported\n",
> > +				param);
> > +			return -EOPNOTSUPP;
> > +		}
> > +	}
> > +
> > +	return s35390a_update_mode(s35390a, pin, mode, freq);
> > +}
> > +
> > +
> > +static const struct pinconf_ops s35390a_pinconf_ops = {
> > +	.is_generic = true,
> > +	.pin_config_get = s35390a_pinconf_get,
> > +	.pin_config_set = s35390a_pinconf_set,
> > +};
> > +
> > +static struct pinctrl_desc s35390a_pinctrl_desc = {
> > +	.name = DRIVER_NAME,
> > +	.pins = s35390a_pins_desc,
> > +	.npins = ARRAY_SIZE(s35390a_pins_desc),
> > +	.pctlops = &s35390a_pinctrl_ops,
> > +	.confops = &s35390a_pinconf_ops,
> > +	.custom_params = s35390a_pinconf_params,
> > +	.num_custom_params = ARRAY_SIZE(s35390a_pinconf_params),
> > +	.owner = THIS_MODULE,
> > +};
> > +
> >  static int s35390a_probe(struct i2c_client *client)
> >  {
> >  	int err, err_read;
> >  	unsigned int i;
> >  	struct s35390a *s35390a;
> >  	struct rtc_device *rtc;
> > -	u8 buf, status1;
> > +	u8 status1;
> >  	struct device *dev = &client->dev;
> >  	struct nvmem_config nvmem_cfg = {
> >  		.name = "s35390a_nvram",
> > @@ -477,7 +762,10 @@ static int s35390a_probe(struct i2c_client *client)
> >  	if (!s35390a)
> >  		return -ENOMEM;
> >  
> > +	mutex_init(&s35390a->mode_lock);
> > +
> >  	s35390a->client[0] = client;
> > +
> >  	i2c_set_clientdata(client, s35390a);
> >  
> >  	/* This chip uses multiple addresses, use dummy devices for them */
> > @@ -492,10 +780,37 @@ static int s35390a_probe(struct i2c_client *client)
> >  		}
> >  	}
> >  
> > +	err = s35390a_disable_test_mode(s35390a);
> > +	if (err < 0) {
> > +		dev_err(dev, "error disabling test mode\n");
> > +		return err;
> > +	}
> > +
> >  	rtc = devm_rtc_allocate_device(dev);
> >  	if (IS_ERR(rtc))
> >  		return PTR_ERR(rtc);
> >  
> > +	rtc->ops = &s35390a_rtc_ops;
> > +	rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
> > +	rtc->range_max = RTC_TIMESTAMP_END_2099;
> > +
> > +	set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->features);
> > +	clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features);
> > +
> > +	s35390a->rtc = rtc;
> > +
> > +	err = devm_pinctrl_register_and_init(dev, &s35390a_pinctrl_desc, s35390a,
> > +					     &s35390a->pinctrl);
> > +	if (err)
> > +		return err;
> > +
> > +	/* If no pinctrl config is defined in DT, fallback to previous behaviour */
> > +	if (!s35390a->mode_init) {
> > +		err = s35390a_update_mode(s35390a, 1, S35390A_MODE_WAKEUP, 0);
> > +		if (err)
> > +			return err;
> > +	}
> > +
> >  	err_read = s35390a_read_status(s35390a, &status1);
> >  	if (err_read < 0) {
> >  		dev_err(dev, "error resetting chip\n");
> > @@ -507,34 +822,8 @@ static int s35390a_probe(struct i2c_client *client)
> >  	else
> >  		s35390a->twentyfourhour = 0;
> >  
> > -	if (status1 & S35390A_FLAG_INT2) {
> > -		/* disable alarm (and maybe test mode) */
> > -		buf = 0;
> > -		err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1);
> > -		if (err < 0) {
> > -			dev_err(dev, "error disabling alarm\n");
> > -			return err;
> > -		}
> > -	} else {
> > -		err = s35390a_disable_test_mode(s35390a);
> > -		if (err < 0) {
> > -			dev_err(dev, "error disabling test mode\n");
> > -			return err;
> > -		}
> > -	}
> > -
> >  	device_set_wakeup_capable(dev, 1);
> >  
> > -	rtc->ops = &s35390a_rtc_ops;
> > -	rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
> > -	rtc->range_max = RTC_TIMESTAMP_END_2099;
> > -
> > -	set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->features);
> > -	clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features);
> > -
> > -	if (status1 & S35390A_FLAG_INT2)
> > -		rtc_update_irq(rtc, 1, RTC_AF);
> > -
> >  	nvmem_cfg.priv = s35390a;
> >  	err = devm_rtc_nvmem_register(rtc, &nvmem_cfg);
> >  	if (err)
> > @@ -545,7 +834,7 @@ static int s35390a_probe(struct i2c_client *client)
> >  
> >  static struct i2c_driver s35390a_driver = {
> >  	.driver		= {
> > -		.name	= "rtc-s35390a",
> > +		.name	= DRIVER_NAME,
> >  		.of_match_table = of_match_ptr(s35390a_of_match),
> >  	},
> >  	.probe		= s35390a_probe,
> > 
> > -- 
> > 2.54.0
> > 

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