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Commit 5bccae6e authored by Sangbeom Kim's avatar Sangbeom Kim Committed by Linus Torvalds
Browse files

rtc: s5m-rtc: add real-time clock driver for s5m8767 



Add real-time clock driver for s5m8767.

Signed-off-by: default avatarSangbeom Kim <sbkim73@samsung.com>
Signed-off-by: default avatarSachin Kamat <sachin.kamat@linaro.org>
Cc: Todd Broch <tbroch@chromium.org>
Cc: Mark Brown <broonie@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>	[mfd parts]
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5e0d1214

drivers/rtc/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -497,6 +497,16 @@ config RTC_DRV_RV3029C2 
	  This driver can also be built as a module. If so, the module

	  will be called rtc-rv3029c2.



config RTC_DRV_S5M

	tristate "Samsung S5M series"

	depends on MFD_SEC_CORE

	help

	  If you say yes here you will get support for the

	  RTC of Samsung S5M PMIC series.



	  This driver can also be built as a module. If so, the module

	  will be called rtc-s5m.



endif # I2C



comment "SPI RTC drivers"

drivers/rtc/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -107,6 +107,7 @@ obj-$(CONFIG_RTC_DRV_RX8025) += rtc-rx8025.o 
obj-$(CONFIG_RTC_DRV_RX8581)	+= rtc-rx8581.o

obj-$(CONFIG_RTC_DRV_S35390A)	+= rtc-s35390a.o

obj-$(CONFIG_RTC_DRV_S3C)	+= rtc-s3c.o

obj-$(CONFIG_RTC_DRV_S5M)	+= rtc-s5m.o

obj-$(CONFIG_RTC_DRV_SA1100)	+= rtc-sa1100.o

obj-$(CONFIG_RTC_DRV_SH)	+= rtc-sh.o

obj-$(CONFIG_RTC_DRV_SNVS)	+= rtc-snvs.o

drivers/rtc/rtc-s5m.c

0 → 100644
+635 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2013 Samsung Electronics Co., Ltd

 *	http://www.samsung.com

 *

 *  Copyright (C) 2013 Google, Inc

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 */



#include <linux/module.h>

#include <linux/i2c.h>

#include <linux/slab.h>

#include <linux/bcd.h>

#include <linux/bitops.h>

#include <linux/regmap.h>

#include <linux/rtc.h>

#include <linux/delay.h>

#include <linux/platform_device.h>

#include <linux/mfd/samsung/core.h>

#include <linux/mfd/samsung/irq.h>

#include <linux/mfd/samsung/rtc.h>



struct s5m_rtc_info {

	struct device *dev;

	struct sec_pmic_dev *s5m87xx;

	struct regmap *rtc;

	struct rtc_device *rtc_dev;

	int irq;

	int device_type;

	int rtc_24hr_mode;

	bool wtsr_smpl;

};



static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm,

			       int rtc_24hr_mode)

{

	tm->tm_sec = data[RTC_SEC] & 0x7f;

	tm->tm_min = data[RTC_MIN] & 0x7f;

	if (rtc_24hr_mode) {

		tm->tm_hour = data[RTC_HOUR] & 0x1f;

	} else {

		tm->tm_hour = data[RTC_HOUR] & 0x0f;

		if (data[RTC_HOUR] & HOUR_PM_MASK)

			tm->tm_hour += 12;

	}



	tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f);

	tm->tm_mday = data[RTC_DATE] & 0x1f;

	tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1;

	tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100;

	tm->tm_yday = 0;

	tm->tm_isdst = 0;

}



static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data)

{

	data[RTC_SEC] = tm->tm_sec;

	data[RTC_MIN] = tm->tm_min;



	if (tm->tm_hour >= 12)

		data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK;

	else

		data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK;



	data[RTC_WEEKDAY] = 1 << tm->tm_wday;

	data[RTC_DATE] = tm->tm_mday;

	data[RTC_MONTH] = tm->tm_mon + 1;

	data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;



	if (tm->tm_year < 100) {

		pr_err("s5m8767 RTC cannot handle the year %d.\n",

		       1900 + tm->tm_year);

		return -EINVAL;

	} else {

		return 0;

	}

}



static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info)

{

	int ret;

	unsigned int data;



	ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);

	if (ret < 0) {

		dev_err(info->dev, "failed to read update reg(%d)\n", ret);

		return ret;

	}



	data |= RTC_TIME_EN_MASK;

	data |= RTC_UDR_MASK;



	ret = regmap_write(info->rtc, SEC_RTC_UDR_CON, data);

	if (ret < 0) {

		dev_err(info->dev, "failed to write update reg(%d)\n", ret);

		return ret;

	}



	do {

		ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);

	} while ((data & RTC_UDR_MASK) && !ret);



	return ret;

}



static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)

{

	int ret;

	unsigned int data;



	ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);

	if (ret < 0) {

		dev_err(info->dev, "%s: fail to read update reg(%d)\n",

			__func__, ret);

		return ret;

	}



	data &= ~RTC_TIME_EN_MASK;

	data |= RTC_UDR_MASK;



	ret = regmap_write(info->rtc, SEC_RTC_UDR_CON, data);

	if (ret < 0) {

		dev_err(info->dev, "%s: fail to write update reg(%d)\n",

			__func__, ret);

		return ret;

	}



	do {

		ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);

	} while ((data & RTC_UDR_MASK) && !ret);



	return ret;

}



static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm)

{

	tm->tm_sec = bcd2bin(data[RTC_SEC]);

	tm->tm_min = bcd2bin(data[RTC_MIN]);



	if (data[RTC_HOUR] & HOUR_12) {

		tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f);

		if (data[RTC_HOUR] & HOUR_PM)

			tm->tm_hour += 12;

	} else {

		tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f);

	}



	tm->tm_wday = data[RTC_WEEKDAY] & 0x07;

	tm->tm_mday = bcd2bin(data[RTC_DATE]);

	tm->tm_mon = bcd2bin(data[RTC_MONTH]);

	tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100;

	tm->tm_year -= 1900;

}



static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data)

{

	data[RTC_SEC] = bin2bcd(tm->tm_sec);

	data[RTC_MIN] = bin2bcd(tm->tm_min);

	data[RTC_HOUR] = bin2bcd(tm->tm_hour);

	data[RTC_WEEKDAY] = tm->tm_wday;

	data[RTC_DATE] = bin2bcd(tm->tm_mday);

	data[RTC_MONTH] = bin2bcd(tm->tm_mon);

	data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100);

	data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100);

}



static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)

{

	struct s5m_rtc_info *info = dev_get_drvdata(dev);

	u8 data[8];

	int ret;



	ret = regmap_bulk_read(info->rtc, SEC_RTC_SEC, data, 8);

	if (ret < 0)

		return ret;



	switch (info->device_type) {

	case S5M8763X:

		s5m8763_data_to_tm(data, tm);

		break;



	case S5M8767X:

		s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode);

		break;



	default:

		return -EINVAL;

	}



	dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,

		1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday,

		tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday);



	return rtc_valid_tm(tm);

}



static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm)

{

	struct s5m_rtc_info *info = dev_get_drvdata(dev);

	u8 data[8];

	int ret = 0;



	switch (info->device_type) {

	case S5M8763X:

		s5m8763_tm_to_data(tm, data);

		break;

	case S5M8767X:

		ret = s5m8767_tm_to_data(tm, data);

		break;

	default:

		return -EINVAL;

	}



	if (ret < 0)

		return ret;



	dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,

		1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday,

		tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday);



	ret = regmap_raw_write(info->rtc, SEC_RTC_SEC, data, 8);

	if (ret < 0)

		return ret;



	ret = s5m8767_rtc_set_time_reg(info);



	return ret;

}



static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)

{

	struct s5m_rtc_info *info = dev_get_drvdata(dev);

	u8 data[8];

	unsigned int val;

	int ret, i;



	ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);

	if (ret < 0)

		return ret;



	switch (info->device_type) {

	case S5M8763X:

		s5m8763_data_to_tm(data, &alrm->time);

		ret = regmap_read(info->rtc, SEC_ALARM0_CONF, &val);

		if (ret < 0)

			return ret;



		alrm->enabled = !!val;



		ret = regmap_read(info->rtc, SEC_RTC_STATUS, &val);

		if (ret < 0)

			return ret;



		break;



	case S5M8767X:

		s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);

		dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,

			1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon,

			alrm->time.tm_mday, alrm->time.tm_hour,

			alrm->time.tm_min, alrm->time.tm_sec,

			alrm->time.tm_wday);



		alrm->enabled = 0;

		for (i = 0; i < 7; i++) {

			if (data[i] & ALARM_ENABLE_MASK) {

				alrm->enabled = 1;

				break;

			}

		}



		alrm->pending = 0;

		ret = regmap_read(info->rtc, SEC_RTC_STATUS, &val);

		if (ret < 0)

			return ret;

		break;



	default:

		return -EINVAL;

	}



	if (val & ALARM0_STATUS)

		alrm->pending = 1;

	else

		alrm->pending = 0;



	return 0;

}



static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info)

{

	u8 data[8];

	int ret, i;

	struct rtc_time tm;



	ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);

	if (ret < 0)

		return ret;



	s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode);

	dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,

		1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday,

		tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday);



	switch (info->device_type) {

	case S5M8763X:

		ret = regmap_write(info->rtc, SEC_ALARM0_CONF, 0);

		break;



	case S5M8767X:

		for (i = 0; i < 7; i++)

			data[i] &= ~ALARM_ENABLE_MASK;



		ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);

		if (ret < 0)

			return ret;



		ret = s5m8767_rtc_set_alarm_reg(info);



		break;



	default:

		return -EINVAL;

	}



	return ret;

}



static int s5m_rtc_start_alarm(struct s5m_rtc_info *info)

{

	int ret;

	u8 data[8];

	u8 alarm0_conf;

	struct rtc_time tm;



	ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);

	if (ret < 0)

		return ret;



	s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode);

	dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,

		1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday,

		tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday);



	switch (info->device_type) {

	case S5M8763X:

		alarm0_conf = 0x77;

		ret = regmap_write(info->rtc, SEC_ALARM0_CONF, alarm0_conf);

		break;



	case S5M8767X:

		data[RTC_SEC] |= ALARM_ENABLE_MASK;

		data[RTC_MIN] |= ALARM_ENABLE_MASK;

		data[RTC_HOUR] |= ALARM_ENABLE_MASK;

		data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK;

		if (data[RTC_DATE] & 0x1f)

			data[RTC_DATE] |= ALARM_ENABLE_MASK;

		if (data[RTC_MONTH] & 0xf)

			data[RTC_MONTH] |= ALARM_ENABLE_MASK;

		if (data[RTC_YEAR1] & 0x7f)

			data[RTC_YEAR1] |= ALARM_ENABLE_MASK;



		ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);

		if (ret < 0)

			return ret;

		ret = s5m8767_rtc_set_alarm_reg(info);



		break;



	default:

		return -EINVAL;

	}



	return ret;

}



static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)

{

	struct s5m_rtc_info *info = dev_get_drvdata(dev);

	u8 data[8];

	int ret;



	switch (info->device_type) {

	case S5M8763X:

		s5m8763_tm_to_data(&alrm->time, data);

		break;



	case S5M8767X:

		s5m8767_tm_to_data(&alrm->time, data);

		break;



	default:

		return -EINVAL;

	}



	dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,

		1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon,

		alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min,

		alrm->time.tm_sec, alrm->time.tm_wday);



	ret = s5m_rtc_stop_alarm(info);

	if (ret < 0)

		return ret;



	ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);

	if (ret < 0)

		return ret;



	ret = s5m8767_rtc_set_alarm_reg(info);

	if (ret < 0)

		return ret;



	if (alrm->enabled)

		ret = s5m_rtc_start_alarm(info);



	return ret;

}



static int s5m_rtc_alarm_irq_enable(struct device *dev,

				    unsigned int enabled)

{

	struct s5m_rtc_info *info = dev_get_drvdata(dev);



	if (enabled)

		return s5m_rtc_start_alarm(info);

	else

		return s5m_rtc_stop_alarm(info);

}



static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data)

{

	struct s5m_rtc_info *info = data;



	rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF);



	return IRQ_HANDLED;

}



static const struct rtc_class_ops s5m_rtc_ops = {

	.read_time = s5m_rtc_read_time,

	.set_time = s5m_rtc_set_time,

	.read_alarm = s5m_rtc_read_alarm,

	.set_alarm = s5m_rtc_set_alarm,

	.alarm_irq_enable = s5m_rtc_alarm_irq_enable,

};



static void s5m_rtc_enable_wtsr(struct s5m_rtc_info *info, bool enable)

{

	int ret;

	ret = regmap_update_bits(info->rtc, SEC_WTSR_SMPL_CNTL,

				 WTSR_ENABLE_MASK,

				 enable ? WTSR_ENABLE_MASK : 0);

	if (ret < 0)

		dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",

			__func__, ret);

}



static void s5m_rtc_enable_smpl(struct s5m_rtc_info *info, bool enable)

{

	int ret;

	ret = regmap_update_bits(info->rtc, SEC_WTSR_SMPL_CNTL,

				 SMPL_ENABLE_MASK,

				 enable ? SMPL_ENABLE_MASK : 0);

	if (ret < 0)

		dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",

			__func__, ret);

}



static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)

{

	u8 data[2];

	unsigned int tp_read;

	int ret;

	struct rtc_time tm;



	ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &tp_read);

	if (ret < 0) {

		dev_err(info->dev, "%s: fail to read control reg(%d)\n",

			__func__, ret);

		return ret;

	}



	/* Set RTC control register : Binary mode, 24hour mode */

	data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);

	data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);



	info->rtc_24hr_mode = 1;

	ret = regmap_raw_write(info->rtc, SEC_ALARM0_CONF, data, 2);

	if (ret < 0) {

		dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",

			__func__, ret);

		return ret;

	}



	/* In first boot time, Set rtc time to 1/1/2012 00:00:00(SUN) */

	if ((tp_read & RTC_TCON_MASK) == 0) {

		dev_dbg(info->dev, "rtc init\n");

		tm.tm_sec = 0;

		tm.tm_min = 0;

		tm.tm_hour = 0;

		tm.tm_wday = 0;

		tm.tm_mday = 1;

		tm.tm_mon = 0;

		tm.tm_year = 112;

		tm.tm_yday = 0;

		tm.tm_isdst = 0;

		ret = s5m_rtc_set_time(info->dev, &tm);

	}



	ret = regmap_update_bits(info->rtc, SEC_RTC_UDR_CON,

				 RTC_TCON_MASK, tp_read | RTC_TCON_MASK);

	if (ret < 0)

		dev_err(info->dev, "%s: fail to update TCON reg(%d)\n",

			__func__, ret);



	return ret;

}



static int s5m_rtc_probe(struct platform_device *pdev)

{

	struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent);

	struct sec_platform_data *pdata = s5m87xx->pdata;

	struct s5m_rtc_info *info;

	int ret;



	if (!pdata) {

		dev_err(pdev->dev.parent, "Platform data not supplied\n");

		return -ENODEV;

	}



	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);

	if (!info)

		return -ENOMEM;



	info->dev = &pdev->dev;

	info->s5m87xx = s5m87xx;

	info->rtc = s5m87xx->rtc;

	info->device_type = s5m87xx->device_type;

	info->wtsr_smpl = s5m87xx->wtsr_smpl;



	switch (pdata->device_type) {

	case S5M8763X:

		info->irq = s5m87xx->irq_base + S5M8763_IRQ_ALARM0;

		break;



	case S5M8767X:

		info->irq = s5m87xx->irq_base + S5M8767_IRQ_RTCA1;

		break;



	default:

		ret = -EINVAL;

		dev_err(&pdev->dev, "Unsupported device type: %d\n", ret);

		return ret;

	}



	platform_set_drvdata(pdev, info);



	ret = s5m8767_rtc_init_reg(info);



	if (info->wtsr_smpl) {

		s5m_rtc_enable_wtsr(info, true);

		s5m_rtc_enable_smpl(info, true);

	}



	device_init_wakeup(&pdev->dev, 1);



	info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc",

						 &s5m_rtc_ops, THIS_MODULE);



	if (IS_ERR(info->rtc_dev))

		return PTR_ERR(info->rtc_dev);



	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,

					s5m_rtc_alarm_irq, 0, "rtc-alarm0",

					info);

	if (ret < 0)

		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",

			info->irq, ret);



	return ret;

}



static void s5m_rtc_shutdown(struct platform_device *pdev)

{

	struct s5m_rtc_info *info = platform_get_drvdata(pdev);

	int i;

	unsigned int val = 0;

	if (info->wtsr_smpl) {

		for (i = 0; i < 3; i++) {

			s5m_rtc_enable_wtsr(info, false);

			regmap_read(info->rtc, SEC_WTSR_SMPL_CNTL, &val);

			pr_debug("%s: WTSR_SMPL reg(0x%02x)\n", __func__, val);

			if (val & WTSR_ENABLE_MASK)

				pr_emerg("%s: fail to disable WTSR\n",

					 __func__);

			else {

				pr_info("%s: success to disable WTSR\n",

					__func__);

				break;

			}

		}

	}

	/* Disable SMPL when power off */

	s5m_rtc_enable_smpl(info, false);

}



static const struct platform_device_id s5m_rtc_id[] = {

	{ "s5m-rtc", 0 },

};



static struct platform_driver s5m_rtc_driver = {

	.driver		= {

		.name	= "s5m-rtc",

		.owner	= THIS_MODULE,

	},

	.probe		= s5m_rtc_probe,

	.shutdown	= s5m_rtc_shutdown,

	.id_table	= s5m_rtc_id,

};



module_platform_driver(s5m_rtc_driver);



/* Module information */

MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");

MODULE_DESCRIPTION("Samsung S5M RTC driver");

MODULE_LICENSE("GPL");

MODULE_ALIAS("platform:s5m-rtc");

include/linux/mfd/samsung/core.h

+1 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ struct sec_pmic_dev { 
	int ono;

	int type;

	bool wakeup;

	bool wtsr_smpl;

};



int sec_irq_init(struct sec_pmic_dev *sec_pmic);

include/linux/mfd/samsung/rtc.h

+11 −0
Original line number Diff line number Diff line
@@ -62,6 +62,11 @@ enum sec_rtc_reg { 
/* RTC Update Register1 */

#define RTC_UDR_SHIFT		0

#define RTC_UDR_MASK		(1 << RTC_UDR_SHIFT)

#define RTC_TCON_SHIFT		1

#define RTC_TCON_MASK		(1 << RTC_TCON_SHIFT)

#define RTC_TIME_EN_SHIFT	3

#define RTC_TIME_EN_MASK	(1 << RTC_TIME_EN_SHIFT)



/* RTC Hour register */

#define HOUR_PM_SHIFT		6

#define HOUR_PM_MASK		(1 << HOUR_PM_SHIFT)
@@ -69,6 +74,12 @@ enum sec_rtc_reg { 
#define ALARM_ENABLE_SHIFT	7

#define ALARM_ENABLE_MASK	(1 << ALARM_ENABLE_SHIFT)



#define SMPL_ENABLE_SHIFT	7

#define SMPL_ENABLE_MASK	(1 << SMPL_ENABLE_SHIFT)



#define WTSR_ENABLE_SHIFT	6

#define WTSR_ENABLE_MASK	(1 << WTSR_ENABLE_SHIFT)



enum {

	RTC_SEC = 0,

	RTC_MIN,