[thirdparty/u-boot.git] / drivers / rtc / rx8010sj.c

/*
 * 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>
#include <linux/bitops.h>

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

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

#ifndef CFG_SYS_I2C_RTC_ADDR
# define CFG_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 = CFG_SYS_I2C_RTC_ADDR,
	};

	return rx8010sj_rtc_get(&dev, tm);
}

int rtc_set(struct rtc_time *tm)
{
	struct ludevice dev = {
			.chip = CFG_SYS_I2C_RTC_ADDR,
	};

	return rx8010sj_rtc_set(&dev, tm);
}

void rtc_reset(void)
{
	struct ludevice dev = {
			.chip = CFG_SYS_I2C_RTC_ADDR,
	};

	rx8010sj_rtc_reset(&dev);
}

void rtc_init(void)
{
	struct ludevice dev = {
			.chip = CFG_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" },
	{ .compatible = "epson,rx8010" },
	{ }
};

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

#endif
Commit	Line	Data
958a2106 NH	1	/*
	2	* Epson RX8010 RTC driver.
	3	*
	4	* Copyright (c) 2017, General Electric Company
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	#include <command.h>
d678a59d	20	#include <common.h>
958a2106 NH	21	#include <dm.h>
	22	#include <i2c.h>
	23	#include <rtc.h>
cd93d625	24	#include <linux/bitops.h>
958a2106 NH	25
	26	/---------------------------------------------------------------------/
	27	/* #undef DEBUG_RTC */
	28
	29	#ifdef DEBUG_RTC
	30	#define DEBUGR(fmt, args...) printf(fmt, ##args)
	31	#else
	32	#define DEBUGR(fmt, args...)
	33	#endif
	34	/---------------------------------------------------------------------/
	35
65cc0e2a TR	36	#ifndef CFG_SYS_I2C_RTC_ADDR
65cc0e2a TR	37	# define CFG_SYS_I2C_RTC_ADDR 0x32
958a2106 NH	38	#endif
	39
	40	/*
	41	* RTC register addresses
	42	*/
	43	#define RX8010_SEC 0x10
	44	#define RX8010_MIN 0x11
	45	#define RX8010_HOUR 0x12
	46	#define RX8010_WDAY 0x13
	47	#define RX8010_MDAY 0x14
	48	#define RX8010_MONTH 0x15
	49	#define RX8010_YEAR 0x16
	50	#define RX8010_YEAR 0x16
	51	#define RX8010_RESV17 0x17
	52	#define RX8010_ALMIN 0x18
	53	#define RX8010_ALHOUR 0x19
	54	#define RX8010_ALWDAY 0x1A
	55	#define RX8010_TCOUNT0 0x1B
	56	#define RX8010_TCOUNT1 0x1C
	57	#define RX8010_EXT 0x1D
	58	#define RX8010_FLAG 0x1E
	59	#define RX8010_CTRL 0x1F
	60	/* 0x20 to 0x2F are user registers */
	61	#define RX8010_RESV30 0x30
	62	#define RX8010_RESV31 0x32
	63	#define RX8010_IRQ 0x32
	64
	65	#define RX8010_EXT_WADA BIT(3)
	66
	67	#define RX8010_FLAG_VLF BIT(1)
	68	#define RX8010_FLAG_AF BIT(3)
	69	#define RX8010_FLAG_TF BIT(4)
	70	#define RX8010_FLAG_UF BIT(5)
	71
	72	#define RX8010_CTRL_AIE BIT(3)
	73	#define RX8010_CTRL_UIE BIT(5)
	74	#define RX8010_CTRL_STOP BIT(6)
	75	#define RX8010_CTRL_TEST BIT(7)
	76
	77	#define RX8010_ALARM_AE BIT(7)
	78
	79	#ifdef CONFIG_DM_RTC
	80
	81	#define DEV_TYPE struct udevice
	82
	83	#else
	84
	85	/* Local udevice */
	86	struct ludevice {
	87	u8 chip;
	88	};
	89
	90	#define DEV_TYPE struct ludevice
	91
	92	#endif
	93
	94	static int rx8010sj_rtc_read8(DEV_TYPE *dev, unsigned int reg)
	95	{
	96	u8 val;
	97	int ret;
	98
	99	#ifdef CONFIG_DM_RTC
	100	ret = dm_i2c_read(dev, reg, &val, sizeof(val));
	101	#else
102	ret = i2c_read(dev->chip, reg, 1, &val, 1);
103	#endif
104
105	return ret < 0 ? ret : val;
106	}
107
108	static int rx8010sj_rtc_write8(DEV_TYPE *dev, unsigned int reg, int val)
109	{
110	int ret;
111	u8 lval = val;
112
113	#ifdef CONFIG_DM_RTC
114	ret = dm_i2c_write(dev, reg, &lval, 1);
115	#else
116	ret = i2c_write(dev->chip, reg, 1, &lval, 1);
117	#endif
118
119	return ret < 0 ? ret : 0;
120	}
121
122	static int validate_time(const struct rtc_time *tm)
123	{
124	if ((tm->tm_year < 2000) \|\| (tm->tm_year > 2099))
125	return -EINVAL;
126
127	if ((tm->tm_mon < 1) \|\| (tm->tm_mon > 12))
128	return -EINVAL;
129
130	if ((tm->tm_mday < 1) \|\| (tm->tm_mday > 31))
131	return -EINVAL;
132
133	if ((tm->tm_wday < 0) \|\| (tm->tm_wday > 6))
134	return -EINVAL;
135
136	if ((tm->tm_hour < 0) \|\| (tm->tm_hour > 23))
137	return -EINVAL;
138
139	if ((tm->tm_min < 0) \|\| (tm->tm_min > 59))
140	return -EINVAL;
141
142	if ((tm->tm_sec < 0) \|\| (tm->tm_sec > 59))
143	return -EINVAL;
144
145	return 0;
146	}
147
148	void rx8010sj_rtc_init(DEV_TYPE *dev)
149	{
150	u8 ctrl[2];
151	int need_clear = 0, ret = 0;
152
153	/* Initialize reserved registers as specified in datasheet */
154	ret = rx8010sj_rtc_write8(dev, RX8010_RESV17, 0xD8);
155	if (ret < 0)
156	goto error;
157
158	ret = rx8010sj_rtc_write8(dev, RX8010_RESV30, 0x00);
159	if (ret < 0)
160	goto error;
161
162	ret = rx8010sj_rtc_write8(dev, RX8010_RESV31, 0x08);
163	if (ret < 0)
164	goto error;
165
166	ret = rx8010sj_rtc_write8(dev, RX8010_IRQ, 0x00);
167	if (ret < 0)
168	goto error;
169
170	for (int i = 0; i < 2; i++) {
171	ret = rx8010sj_rtc_read8(dev, RX8010_FLAG + i);
172	if (ret < 0)
173	goto error;
174
175	ctrl[i] = ret;
176	}
177
178	if (ctrl[0] & RX8010_FLAG_VLF)
179	printf("RTC low voltage detected\n");
180
181	if (ctrl[0] & RX8010_FLAG_AF) {
182	printf("Alarm was detected\n");
183	need_clear = 1;
184	}
185
186	if (ctrl[0] & RX8010_FLAG_TF)
187	need_clear = 1;
188
189	if (ctrl[0] & RX8010_FLAG_UF)
190	need_clear = 1;
191
192	if (need_clear) {
193	ctrl[0] &= ~(RX8010_FLAG_AF \| RX8010_FLAG_TF \| RX8010_FLAG_UF);
194	ret = rx8010sj_rtc_write8(dev, RX8010_FLAG, ctrl[0]);
195	if (ret < 0)
196	goto error;
197	}
198
199	return;
200
201	error:
202	printf("Error rtc init.\n");
203	}
204
205	/* Get the current time from the RTC */
206	static int rx8010sj_rtc_get(DEV_TYPE dev, struct rtc_time tmp)
207	{
208	u8 date[7];
209	int flagreg;
210	int ret;
211
212	flagreg = rx8010sj_rtc_read8(dev, RX8010_FLAG);
213	if (flagreg < 0) {
214	DEBUGR("Error reading from RTC. err: %d\n", flagreg);
215	return -EIO;
216	}
217
218	if (flagreg & RX8010_FLAG_VLF) {
219	DEBUGR("RTC low voltage detected\n");
220	return -EINVAL;
221	}
222
223	for (int i = 0; i < 7; i++) {
224	ret = rx8010sj_rtc_read8(dev, RX8010_SEC + i);
225	if (ret < 0) {
226	DEBUGR("Error reading from RTC. err: %d\n", ret);
227	return -EIO;
228	}
229	date[i] = ret;
230	}
231
232	tmp->tm_sec = bcd2bin(date[RX8010_SEC - RX8010_SEC] & 0x7f);
233	tmp->tm_min = bcd2bin(date[RX8010_MIN - RX8010_SEC] & 0x7f);
234	tmp->tm_hour = bcd2bin(date[RX8010_HOUR - RX8010_SEC] & 0x3f);
235	tmp->tm_mday = bcd2bin(date[RX8010_MDAY - RX8010_SEC] & 0x3f);
236	tmp->tm_mon = bcd2bin(date[RX8010_MONTH - RX8010_SEC] & 0x1f);
237	tmp->tm_year = bcd2bin(date[RX8010_YEAR - RX8010_SEC]) + 2000;
238	tmp->tm_wday = 0;
239	tmp->tm_yday = 0;
240	tmp->tm_isdst = 0;
241
242	DEBUGR("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
243	tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
244	tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
245
246	return 0;
247	}
248
249	/* Set the RTC */
250	static int rx8010sj_rtc_set(DEV_TYPE dev, const struct rtc_time tm)
251	{
252	u8 date[7];
253	int ctrl, flagreg;
254	int ret;
255
256	ret = validate_time(tm);
257	if (ret < 0)
258	return -EINVAL;
259
260	/* set STOP bit before changing clock/calendar */
261	ctrl = rx8010sj_rtc_read8(dev, RX8010_CTRL);
262	if (ctrl < 0)
263	return ctrl;
264	ret = rx8010sj_rtc_write8(dev, RX8010_CTRL, ctrl \| RX8010_CTRL_STOP);
265	if (ret < 0)
266	return ret;
267
268	date[RX8010_SEC - RX8010_SEC] = bin2bcd(tm->tm_sec);
269	date[RX8010_MIN - RX8010_SEC] = bin2bcd(tm->tm_min);
270	date[RX8010_HOUR - RX8010_SEC] = bin2bcd(tm->tm_hour);
271	date[RX8010_MDAY - RX8010_SEC] = bin2bcd(tm->tm_mday);
272	date[RX8010_MONTH - RX8010_SEC] = bin2bcd(tm->tm_mon);
273	date[RX8010_YEAR - RX8010_SEC] = bin2bcd(tm->tm_year - 2000);
274	date[RX8010_WDAY - RX8010_SEC] = bin2bcd(tm->tm_wday);
275
276	for (int i = 0; i < 7; i++) {
277	ret = rx8010sj_rtc_write8(dev, RX8010_SEC + i, date[i]);
278	if (ret < 0) {
279	DEBUGR("Error writing to RTC. err: %d\n", ret);
280	return -EIO;
281	}
282	}
283
284	/* clear STOP bit after changing clock/calendar */
285	ctrl = rx8010sj_rtc_read8(dev, RX8010_CTRL);
286	if (ctrl < 0)
287	return ctrl;
288
289	ret = rx8010sj_rtc_write8(dev, RX8010_CTRL, ctrl & ~RX8010_CTRL_STOP);
290	if (ret < 0)
291	return ret;
292
293	flagreg = rx8010sj_rtc_read8(dev, RX8010_FLAG);
294	if (flagreg < 0)
295	return flagreg;
296
297	if (flagreg & RX8010_FLAG_VLF)
298	ret = rx8010sj_rtc_write8(dev, RX8010_FLAG,
299	flagreg & ~RX8010_FLAG_VLF);
300
301	return 0;
302	}
303
304	/* Reset the RTC. */
305	static int rx8010sj_rtc_reset(DEV_TYPE *dev)
306	{
307	/* Not needed */
308	return 0;
309	}
310
311	#ifndef CONFIG_DM_RTC
312
313	int rtc_get(struct rtc_time *tm)
314	{
315	struct ludevice dev = {
65cc0e2a	316	.chip = CFG_SYS_I2C_RTC_ADDR,
958a2106 NH	317	};
	318
	319	return rx8010sj_rtc_get(&dev, tm);
	320	}
	321
	322	int rtc_set(struct rtc_time *tm)
	323	{
	324	struct ludevice dev = {
65cc0e2a	325	.chip = CFG_SYS_I2C_RTC_ADDR,
958a2106 NH	326	};
	327
	328	return rx8010sj_rtc_set(&dev, tm);
	329	}
	330
	331	void rtc_reset(void)
	332	{
	333	struct ludevice dev = {
65cc0e2a	334	.chip = CFG_SYS_I2C_RTC_ADDR,
958a2106 NH	335	};
	336
	337	rx8010sj_rtc_reset(&dev);
	338	}
	339
	340	void rtc_init(void)
	341	{
	342	struct ludevice dev = {
65cc0e2a	343	.chip = CFG_SYS_I2C_RTC_ADDR,
958a2106 NH	344	};
	345
	346	rx8010sj_rtc_init(&dev);
	347	}
	348
	349	#else
	350
	351	static int rx8010sj_probe(struct udevice *dev)
	352	{
a00b1f9d	353	rx8010sj_rtc_init(dev);
958a2106 NH	354
	355	return 0;
	356	}
	357
	358	static const struct rtc_ops rx8010sj_rtc_ops = {
	359	.get = rx8010sj_rtc_get,
	360	.set = rx8010sj_rtc_set,
	361	.read8 = rx8010sj_rtc_read8,
	362	.write8 = rx8010sj_rtc_write8,
	363	.reset = rx8010sj_rtc_reset,
	364	};
	365
	366	static const struct udevice_id rx8010sj_rtc_ids[] = {
	367	{ .compatible = "epson,rx8010sj-rtc" },
fff7b33c	368	{ .compatible = "epson,rx8010" },
958a2106 NH	369	{ }
	370	};
	371
	372	U_BOOT_DRIVER(rx8010sj_rtc) = {
	373	.name = "rx8010sj_rtc",
	374	.id = UCLASS_RTC,
	375	.probe = rx8010sj_probe,
	376	.of_match = rx8010sj_rtc_ids,
	377	.ops = &rx8010sj_rtc_ops,
	378	};
	379
	380	#endif