drivers/rtc/rx8010sj.c - u-boot-mtk - Git at Google

 /*
  * Epson RX8010 RTC driver.
  *
  * Copyright (c) 2017, General Electric Company
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
  * version 2, as published by the Free Software Foundation.
  *
  * This program is distributed in the hope 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.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */

 #include <command.h>
 #include <common.h>
 #include <dm.h>
 #include <i2c.h>
 #include <rtc.h>

 /*---------------------------------------------------------------------*/
 /* #undef DEBUG_RTC */

 #ifdef DEBUG_RTC
 #define DEBUGR(fmt, args...) printf(fmt, ##args)
 #else
 #define DEBUGR(fmt, args...)
 #endif
 /*---------------------------------------------------------------------*/

 #ifndef CONFIG_SYS_I2C_RTC_ADDR
 # define CONFIG_SYS_I2C_RTC_ADDR	0x32
 #endif

 /*
  * RTC register addresses
  */
 #define RX8010_SEC     0x10
 #define RX8010_MIN     0x11
 #define RX8010_HOUR    0x12
 #define RX8010_WDAY    0x13
 #define RX8010_MDAY    0x14
 #define RX8010_MONTH   0x15
 #define RX8010_YEAR    0x16
 #define RX8010_YEAR    0x16
 #define RX8010_RESV17  0x17
 #define RX8010_ALMIN   0x18
 #define RX8010_ALHOUR  0x19
 #define RX8010_ALWDAY  0x1A
 #define RX8010_TCOUNT0 0x1B
 #define RX8010_TCOUNT1 0x1C
 #define RX8010_EXT     0x1D
 #define RX8010_FLAG    0x1E
 #define RX8010_CTRL    0x1F
 /* 0x20 to 0x2F are user registers */
 #define RX8010_RESV30  0x30
 #define RX8010_RESV31  0x32
 #define RX8010_IRQ     0x32

 #define RX8010_EXT_WADA  BIT(3)

 #define RX8010_FLAG_VLF  BIT(1)
 #define RX8010_FLAG_AF   BIT(3)
 #define RX8010_FLAG_TF   BIT(4)
 #define RX8010_FLAG_UF   BIT(5)

 #define RX8010_CTRL_AIE  BIT(3)
 #define RX8010_CTRL_UIE  BIT(5)
 #define RX8010_CTRL_STOP BIT(6)
 #define RX8010_CTRL_TEST BIT(7)

 #define RX8010_ALARM_AE  BIT(7)

 #ifdef CONFIG_DM_RTC

 #define DEV_TYPE struct udevice

 #else

 /* Local udevice */
 struct ludevice {
 	u8 chip;
 };

 #define DEV_TYPE struct ludevice

 #endif

 static int rx8010sj_rtc_read8(DEV_TYPE *dev, unsigned int reg)
 {
 	u8 val;
 	int ret;

 #ifdef CONFIG_DM_RTC
 	ret = dm_i2c_read(dev, reg, &val, sizeof(val));
 #else
 	ret = i2c_read(dev->chip, reg, 1, &val, 1);
 #endif

 	return ret < 0 ? ret : val;
 }

 static int rx8010sj_rtc_write8(DEV_TYPE *dev, unsigned int reg, int val)
 {
 	int ret;
 	u8 lval = val;

 #ifdef CONFIG_DM_RTC
 	ret = dm_i2c_write(dev, reg, &lval, 1);
 #else
 	ret = i2c_write(dev->chip, reg, 1, &lval, 1);
 #endif

 	return ret < 0 ? ret : 0;
 }

 static int validate_time(const struct rtc_time *tm)
 {
 	if ((tm->tm_year < 2000) || (tm->tm_year > 2099))
 		return -EINVAL;

 	if ((tm->tm_mon < 1) || (tm->tm_mon > 12))
 		return -EINVAL;

 	if ((tm->tm_mday < 1) || (tm->tm_mday > 31))
 		return -EINVAL;

 	if ((tm->tm_wday < 0) || (tm->tm_wday > 6))
 		return -EINVAL;

 	if ((tm->tm_hour < 0) || (tm->tm_hour > 23))
 		return -EINVAL;

 	if ((tm->tm_min < 0) || (tm->tm_min > 59))
 		return -EINVAL;

 	if ((tm->tm_sec < 0) || (tm->tm_sec > 59))
 		return -EINVAL;

 	return 0;
 }

 void rx8010sj_rtc_init(DEV_TYPE *dev)
 {
 	u8 ctrl[2];
 	int need_clear = 0, ret = 0;

 	/* Initialize reserved registers as specified in datasheet */
 	ret = rx8010sj_rtc_write8(dev, RX8010_RESV17, 0xD8);
 	if (ret < 0)
 		goto error;

 	ret = rx8010sj_rtc_write8(dev, RX8010_RESV30, 0x00);
 	if (ret < 0)
 		goto error;

 	ret = rx8010sj_rtc_write8(dev, RX8010_RESV31, 0x08);
 	if (ret < 0)
 		goto error;

 	ret = rx8010sj_rtc_write8(dev, RX8010_IRQ, 0x00);
 	if (ret < 0)
 		goto error;

 	for (int i = 0; i < 2; i++) {
 		ret = rx8010sj_rtc_read8(dev, RX8010_FLAG + i);
 		if (ret < 0)
 			goto error;

 		ctrl[i] = ret;
 	}

 	if (ctrl[0] & RX8010_FLAG_VLF)
 		printf("RTC low voltage detected\n");

 	if (ctrl[0] & RX8010_FLAG_AF) {
 		printf("Alarm was detected\n");
 		need_clear = 1;
 	}

 	if (ctrl[0] & RX8010_FLAG_TF)
 		need_clear = 1;

 	if (ctrl[0] & RX8010_FLAG_UF)
 		need_clear = 1;

 	if (need_clear) {
 		ctrl[0] &= ~(RX8010_FLAG_AF | RX8010_FLAG_TF | RX8010_FLAG_UF);
 		ret = rx8010sj_rtc_write8(dev, RX8010_FLAG, ctrl[0]);
 		if (ret < 0)
 			goto error;
 	}

 	return;

 error:
 	printf("Error rtc init.\n");
 }

 /* Get the current time from the RTC */
 static int rx8010sj_rtc_get(DEV_TYPE *dev, struct rtc_time *tmp)
 {
 	u8 date[7];
 	int flagreg;
 	int ret;

 	flagreg = rx8010sj_rtc_read8(dev, RX8010_FLAG);
 	if (flagreg < 0) {
 		DEBUGR("Error reading from RTC. err: %d\n", flagreg);
 		return -EIO;
 	}

 	if (flagreg & RX8010_FLAG_VLF) {
 		DEBUGR("RTC low voltage detected\n");
 		return -EINVAL;
 	}

 	for (int i = 0; i < 7; i++) {
 		ret = rx8010sj_rtc_read8(dev, RX8010_SEC + i);
 		if (ret < 0) {
 			DEBUGR("Error reading from RTC. err: %d\n", ret);
 			return -EIO;
 		}
 		date[i] = ret;
 	}

 	tmp->tm_sec = bcd2bin(date[RX8010_SEC - RX8010_SEC] & 0x7f);
 	tmp->tm_min = bcd2bin(date[RX8010_MIN - RX8010_SEC] & 0x7f);
 	tmp->tm_hour = bcd2bin(date[RX8010_HOUR - RX8010_SEC] & 0x3f);
 	tmp->tm_mday = bcd2bin(date[RX8010_MDAY - RX8010_SEC] & 0x3f);
 	tmp->tm_mon = bcd2bin(date[RX8010_MONTH - RX8010_SEC] & 0x1f);
 	tmp->tm_year = bcd2bin(date[RX8010_YEAR - RX8010_SEC]) + 2000;
 	tmp->tm_wday = 0;
 	tmp->tm_yday = 0;
 	tmp->tm_isdst = 0;

 	DEBUGR("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
 	       tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
 	       tmp->tm_hour, tmp->tm_min, tmp->tm_sec);

 	return 0;
 }

 /* Set the RTC */
 static int rx8010sj_rtc_set(DEV_TYPE *dev, const struct rtc_time *tm)
 {
 	u8 date[7];
 	int ctrl, flagreg;
 	int ret;

 	ret = validate_time(tm);
 	if (ret < 0)
 		return -EINVAL;

 	/* set STOP bit before changing clock/calendar */
 	ctrl = rx8010sj_rtc_read8(dev, RX8010_CTRL);
 	if (ctrl < 0)
 		return ctrl;
 	ret = rx8010sj_rtc_write8(dev, RX8010_CTRL, ctrl | RX8010_CTRL_STOP);
 	if (ret < 0)
 		return ret;

 	date[RX8010_SEC - RX8010_SEC] = bin2bcd(tm->tm_sec);
 	date[RX8010_MIN - RX8010_SEC] = bin2bcd(tm->tm_min);
 	date[RX8010_HOUR - RX8010_SEC] = bin2bcd(tm->tm_hour);
 	date[RX8010_MDAY - RX8010_SEC] = bin2bcd(tm->tm_mday);
 	date[RX8010_MONTH - RX8010_SEC] = bin2bcd(tm->tm_mon);
 	date[RX8010_YEAR - RX8010_SEC] = bin2bcd(tm->tm_year - 2000);
 	date[RX8010_WDAY - RX8010_SEC] = bin2bcd(tm->tm_wday);

 	for (int i = 0; i < 7; i++) {
 		ret = rx8010sj_rtc_write8(dev, RX8010_SEC + i, date[i]);
 		if (ret < 0) {
 			DEBUGR("Error writing to RTC. err: %d\n", ret);
 			return -EIO;
 		}
 	}

 	/* clear STOP bit after changing clock/calendar */
 	ctrl = rx8010sj_rtc_read8(dev, RX8010_CTRL);
 	if (ctrl < 0)
 		return ctrl;

 	ret = rx8010sj_rtc_write8(dev, RX8010_CTRL, ctrl & ~RX8010_CTRL_STOP);
 	if (ret < 0)
 		return ret;

 	flagreg = rx8010sj_rtc_read8(dev, RX8010_FLAG);
 	if (flagreg < 0)
 		return flagreg;

 	if (flagreg & RX8010_FLAG_VLF)
 		ret = rx8010sj_rtc_write8(dev, RX8010_FLAG,
 					  flagreg & ~RX8010_FLAG_VLF);

 	return 0;
 }

 /* Reset the RTC. */
 static int rx8010sj_rtc_reset(DEV_TYPE *dev)
 {
 	/* Not needed */
 	return 0;
 }

 #ifndef CONFIG_DM_RTC

 int rtc_get(struct rtc_time *tm)
 {
 	struct ludevice dev = {
 			.chip = CONFIG_SYS_I2C_RTC_ADDR,
 	};

 	return rx8010sj_rtc_get(&dev, tm);
 }

 int rtc_set(struct rtc_time *tm)
 {
 	struct ludevice dev = {
 			.chip = CONFIG_SYS_I2C_RTC_ADDR,
 	};

 	return rx8010sj_rtc_set(&dev, tm);
 }

 void rtc_reset(void)
 {
 	struct ludevice dev = {
 			.chip = CONFIG_SYS_I2C_RTC_ADDR,
 	};

 	rx8010sj_rtc_reset(&dev);
 }

 void rtc_init(void)
 {
 	struct ludevice dev = {
 			.chip = CONFIG_SYS_I2C_RTC_ADDR,
 	};

 	rx8010sj_rtc_init(&dev);
 }

 #else

 static int rx8010sj_probe(struct udevice *dev)
 {
 	rx8010sj_rtc_init(&dev);

 	return 0;
 }

 static const struct rtc_ops rx8010sj_rtc_ops = {
 	.get = rx8010sj_rtc_get,
 	.set = rx8010sj_rtc_set,
 	.read8 = rx8010sj_rtc_read8,
 	.write8 = rx8010sj_rtc_write8,
 	.reset = rx8010sj_rtc_reset,
 };

 static const struct udevice_id rx8010sj_rtc_ids[] = {
 	{ .compatible = "epson,rx8010sj-rtc" },
 	{ }
 };

 U_BOOT_DRIVER(rx8010sj_rtc) = {
 	.name	  = "rx8010sj_rtc",
 	.id	      = UCLASS_RTC,
 	.probe    = rx8010sj_probe,
 	.of_match = rx8010sj_rtc_ids,
 	.ops	  = &rx8010sj_rtc_ops,
 };

 #endif
	/*
	* Epson RX8010 RTC driver.
	*
	* Copyright (c) 2017, General Electric Company
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms and conditions of the GNU General Public License,
	* version 2, as published by the Free Software Foundation.
	*
	* This program is distributed in the hope 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.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	*/

	#include <command.h>
	#include <common.h>
	#include <dm.h>
	#include <i2c.h>
	#include <rtc.h>

	/---------------------------------------------------------------------/
	/* #undef DEBUG_RTC */

	#ifdef DEBUG_RTC
	#define DEBUGR(fmt, args...) printf(fmt, ##args)
	#else
	#define DEBUGR(fmt, args...)
	#endif
	/---------------------------------------------------------------------/

	#ifndef CONFIG_SYS_I2C_RTC_ADDR
	# define CONFIG_SYS_I2C_RTC_ADDR 0x32
	#endif

	/*
	* RTC register addresses
	*/
	#define RX8010_SEC 0x10
	#define RX8010_MIN 0x11
	#define RX8010_HOUR 0x12
	#define RX8010_WDAY 0x13
	#define RX8010_MDAY 0x14
	#define RX8010_MONTH 0x15
	#define RX8010_YEAR 0x16
	#define RX8010_YEAR 0x16
	#define RX8010_RESV17 0x17
	#define RX8010_ALMIN 0x18
	#define RX8010_ALHOUR 0x19
	#define RX8010_ALWDAY 0x1A
	#define RX8010_TCOUNT0 0x1B
	#define RX8010_TCOUNT1 0x1C
	#define RX8010_EXT 0x1D
	#define RX8010_FLAG 0x1E
	#define RX8010_CTRL 0x1F
	/* 0x20 to 0x2F are user registers */
	#define RX8010_RESV30 0x30
	#define RX8010_RESV31 0x32
	#define RX8010_IRQ 0x32

	#define RX8010_EXT_WADA BIT(3)

	#define RX8010_FLAG_VLF BIT(1)
	#define RX8010_FLAG_AF BIT(3)
	#define RX8010_FLAG_TF BIT(4)
	#define RX8010_FLAG_UF BIT(5)

	#define RX8010_CTRL_AIE BIT(3)
	#define RX8010_CTRL_UIE BIT(5)
	#define RX8010_CTRL_STOP BIT(6)
	#define RX8010_CTRL_TEST BIT(7)

	#define RX8010_ALARM_AE BIT(7)

	#ifdef CONFIG_DM_RTC

	#define DEV_TYPE struct udevice

	#else

	/* Local udevice */
	struct ludevice {
	u8 chip;
	};

	#define DEV_TYPE struct ludevice

	#endif

	static int rx8010sj_rtc_read8(DEV_TYPE *dev, unsigned int reg)
	{
	u8 val;
	int ret;

	#ifdef CONFIG_DM_RTC
	ret = dm_i2c_read(dev, reg, &val, sizeof(val));
	#else
	ret = i2c_read(dev->chip, reg, 1, &val, 1);
	#endif

	return ret < 0 ? ret : val;
	}

	static int rx8010sj_rtc_write8(DEV_TYPE *dev, unsigned int reg, int val)
	{
	int ret;
	u8 lval = val;

	#ifdef CONFIG_DM_RTC
	ret = dm_i2c_write(dev, reg, &lval, 1);
	#else
	ret = i2c_write(dev->chip, reg, 1, &lval, 1);
	#endif

	return ret < 0 ? ret : 0;
	}

	static int validate_time(const struct rtc_time *tm)
	{
	if ((tm->tm_year < 2000) \|\| (tm->tm_year > 2099))
	return -EINVAL;

	if ((tm->tm_mon < 1) \|\| (tm->tm_mon > 12))
	return -EINVAL;

	if ((tm->tm_mday < 1) \|\| (tm->tm_mday > 31))
	return -EINVAL;

	if ((tm->tm_wday < 0) \|\| (tm->tm_wday > 6))
	return -EINVAL;

	if ((tm->tm_hour < 0) \|\| (tm->tm_hour > 23))
	return -EINVAL;

	if ((tm->tm_min < 0) \|\| (tm->tm_min > 59))
	return -EINVAL;

	if ((tm->tm_sec < 0) \|\| (tm->tm_sec > 59))
	return -EINVAL;

	return 0;
	}

	void rx8010sj_rtc_init(DEV_TYPE *dev)
	{
	u8 ctrl[2];
	int need_clear = 0, ret = 0;

	/* Initialize reserved registers as specified in datasheet */
	ret = rx8010sj_rtc_write8(dev, RX8010_RESV17, 0xD8);
	if (ret < 0)
	goto error;

	ret = rx8010sj_rtc_write8(dev, RX8010_RESV30, 0x00);
	if (ret < 0)
	goto error;

	ret = rx8010sj_rtc_write8(dev, RX8010_RESV31, 0x08);
	if (ret < 0)
	goto error;

	ret = rx8010sj_rtc_write8(dev, RX8010_IRQ, 0x00);
	if (ret < 0)
	goto error;

	for (int i = 0; i < 2; i++) {
	ret = rx8010sj_rtc_read8(dev, RX8010_FLAG + i);
	if (ret < 0)
	goto error;

	ctrl[i] = ret;
	}

	if (ctrl[0] & RX8010_FLAG_VLF)
	printf("RTC low voltage detected\n");

	if (ctrl[0] & RX8010_FLAG_AF) {
	printf("Alarm was detected\n");
	need_clear = 1;
	}

	if (ctrl[0] & RX8010_FLAG_TF)
	need_clear = 1;

	if (ctrl[0] & RX8010_FLAG_UF)
	need_clear = 1;

	if (need_clear) {
	ctrl[0] &= ~(RX8010_FLAG_AF \| RX8010_FLAG_TF \| RX8010_FLAG_UF);
	ret = rx8010sj_rtc_write8(dev, RX8010_FLAG, ctrl[0]);
	if (ret < 0)
	goto error;
	}

	return;

	error:
	printf("Error rtc init.\n");
	}

	/* Get the current time from the RTC */
	static int rx8010sj_rtc_get(DEV_TYPE dev, struct rtc_time tmp)
	{
	u8 date[7];
	int flagreg;
	int ret;

	flagreg = rx8010sj_rtc_read8(dev, RX8010_FLAG);
	if (flagreg < 0) {
	DEBUGR("Error reading from RTC. err: %d\n", flagreg);
	return -EIO;
	}

	if (flagreg & RX8010_FLAG_VLF) {
	DEBUGR("RTC low voltage detected\n");
	return -EINVAL;
	}

	for (int i = 0; i < 7; i++) {
	ret = rx8010sj_rtc_read8(dev, RX8010_SEC + i);
	if (ret < 0) {
	DEBUGR("Error reading from RTC. err: %d\n", ret);
	return -EIO;
	}
	date[i] = ret;
	}

	tmp->tm_sec = bcd2bin(date[RX8010_SEC - RX8010_SEC] & 0x7f);
	tmp->tm_min = bcd2bin(date[RX8010_MIN - RX8010_SEC] & 0x7f);
	tmp->tm_hour = bcd2bin(date[RX8010_HOUR - RX8010_SEC] & 0x3f);
	tmp->tm_mday = bcd2bin(date[RX8010_MDAY - RX8010_SEC] & 0x3f);
	tmp->tm_mon = bcd2bin(date[RX8010_MONTH - RX8010_SEC] & 0x1f);
	tmp->tm_year = bcd2bin(date[RX8010_YEAR - RX8010_SEC]) + 2000;
	tmp->tm_wday = 0;
	tmp->tm_yday = 0;
	tmp->tm_isdst = 0;

	DEBUGR("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
	tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
	tmp->tm_hour, tmp->tm_min, tmp->tm_sec);

	return 0;
	}

	/* Set the RTC */
	static int rx8010sj_rtc_set(DEV_TYPE dev, const struct rtc_time tm)
	{
	u8 date[7];
	int ctrl, flagreg;
	int ret;

	ret = validate_time(tm);
	if (ret < 0)
	return -EINVAL;

	/* set STOP bit before changing clock/calendar */
	ctrl = rx8010sj_rtc_read8(dev, RX8010_CTRL);
	if (ctrl < 0)
	return ctrl;
	ret = rx8010sj_rtc_write8(dev, RX8010_CTRL, ctrl \| RX8010_CTRL_STOP);
	if (ret < 0)
	return ret;

	date[RX8010_SEC - RX8010_SEC] = bin2bcd(tm->tm_sec);
	date[RX8010_MIN - RX8010_SEC] = bin2bcd(tm->tm_min);
	date[RX8010_HOUR - RX8010_SEC] = bin2bcd(tm->tm_hour);
	date[RX8010_MDAY - RX8010_SEC] = bin2bcd(tm->tm_mday);
	date[RX8010_MONTH - RX8010_SEC] = bin2bcd(tm->tm_mon);
	date[RX8010_YEAR - RX8010_SEC] = bin2bcd(tm->tm_year - 2000);
	date[RX8010_WDAY - RX8010_SEC] = bin2bcd(tm->tm_wday);

	for (int i = 0; i < 7; i++) {
	ret = rx8010sj_rtc_write8(dev, RX8010_SEC + i, date[i]);
	if (ret < 0) {
	DEBUGR("Error writing to RTC. err: %d\n", ret);
	return -EIO;
	}
	}

	/* clear STOP bit after changing clock/calendar */
	ctrl = rx8010sj_rtc_read8(dev, RX8010_CTRL);
	if (ctrl < 0)
	return ctrl;

	ret = rx8010sj_rtc_write8(dev, RX8010_CTRL, ctrl & ~RX8010_CTRL_STOP);
	if (ret < 0)
	return ret;

	flagreg = rx8010sj_rtc_read8(dev, RX8010_FLAG);
	if (flagreg < 0)
	return flagreg;

	if (flagreg & RX8010_FLAG_VLF)
	ret = rx8010sj_rtc_write8(dev, RX8010_FLAG,
	flagreg & ~RX8010_FLAG_VLF);

	return 0;
	}

	/* Reset the RTC. */
	static int rx8010sj_rtc_reset(DEV_TYPE *dev)
	{
	/* Not needed */
	return 0;
	}

	#ifndef CONFIG_DM_RTC

	int rtc_get(struct rtc_time *tm)
	{
	struct ludevice dev = {
	.chip = CONFIG_SYS_I2C_RTC_ADDR,
	};

	return rx8010sj_rtc_get(&dev, tm);
	}

	int rtc_set(struct rtc_time *tm)
	{
	struct ludevice dev = {
	.chip = CONFIG_SYS_I2C_RTC_ADDR,
	};

	return rx8010sj_rtc_set(&dev, tm);
	}

	void rtc_reset(void)
	{
	struct ludevice dev = {
	.chip = CONFIG_SYS_I2C_RTC_ADDR,
	};

	rx8010sj_rtc_reset(&dev);
	}

	void rtc_init(void)
	{
	struct ludevice dev = {
	.chip = CONFIG_SYS_I2C_RTC_ADDR,
	};

	rx8010sj_rtc_init(&dev);
	}

	#else

	static int rx8010sj_probe(struct udevice *dev)
	{
	rx8010sj_rtc_init(&dev);

	return 0;
	}

	static const struct rtc_ops rx8010sj_rtc_ops = {
	.get = rx8010sj_rtc_get,
	.set = rx8010sj_rtc_set,
	.read8 = rx8010sj_rtc_read8,
	.write8 = rx8010sj_rtc_write8,
	.reset = rx8010sj_rtc_reset,
	};

	static const struct udevice_id rx8010sj_rtc_ids[] = {
	{ .compatible = "epson,rx8010sj-rtc" },
	{ }
	};

	U_BOOT_DRIVER(rx8010sj_rtc) = {
	.name = "rx8010sj_rtc",
	.id = UCLASS_RTC,
	.probe = rx8010sj_probe,
	.of_match = rx8010sj_rtc_ids,
	.ops = &rx8010sj_rtc_ops,
	};

	#endif