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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc 
 kernel/drivers/rtc/rtc-rx8010.c
....@@ -1,13 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Driver for the Epson RTC module RX-8010 SJ
34  *
45  * Copyright(C) Timesys Corporation 2015
56  * Copyright(C) General Electric Company 2015
6
- *
7
- * This program is free software; you can redistribute it and/or modify
8
- * it under the terms of the GNU General Public License version 2 as
9
- * published by the Free Software Foundation.
10
- *
117  */
128 
139 #include <linux/bcd.h>
....@@ -15,42 +11,43 @@
1511 #include <linux/i2c.h>
1612 #include <linux/kernel.h>
1713 #include <linux/module.h>
14
+#include <linux/regmap.h>
1815 #include <linux/rtc.h>
1916 
20
-#define RX8010_SEC     0x10
21
-#define RX8010_MIN     0x11
22
-#define RX8010_HOUR    0x12
23
-#define RX8010_WDAY    0x13
24
-#define RX8010_MDAY    0x14
25
-#define RX8010_MONTH   0x15
26
-#define RX8010_YEAR    0x16
27
-#define RX8010_RESV17  0x17
28
-#define RX8010_ALMIN   0x18
29
-#define RX8010_ALHOUR  0x19
30
-#define RX8010_ALWDAY  0x1A
31
-#define RX8010_TCOUNT0 0x1B
32
-#define RX8010_TCOUNT1 0x1C
33
-#define RX8010_EXT     0x1D
34
-#define RX8010_FLAG    0x1E
35
-#define RX8010_CTRL    0x1F
17
+#define RX8010_SEC		0x10
18
+#define RX8010_MIN		0x11
19
+#define RX8010_HOUR		0x12
20
+#define RX8010_WDAY		0x13
21
+#define RX8010_MDAY		0x14
22
+#define RX8010_MONTH		0x15
23
+#define RX8010_YEAR		0x16
24
+#define RX8010_RESV17		0x17
25
+#define RX8010_ALMIN		0x18
26
+#define RX8010_ALHOUR		0x19
27
+#define RX8010_ALWDAY		0x1A
28
+#define RX8010_TCOUNT0		0x1B
29
+#define RX8010_TCOUNT1		0x1C
30
+#define RX8010_EXT		0x1D
31
+#define RX8010_FLAG		0x1E
32
+#define RX8010_CTRL		0x1F
3633 /* 0x20 to 0x2F are user registers */
37
-#define RX8010_RESV30  0x30
38
-#define RX8010_RESV31  0x31
39
-#define RX8010_IRQ     0x32
34
+#define RX8010_RESV30		0x30
35
+#define RX8010_RESV31		0x31
36
+#define RX8010_IRQ		0x32
4037 
41
-#define RX8010_EXT_WADA  BIT(3)
38
+#define RX8010_EXT_WADA		BIT(3)
4239 
43
-#define RX8010_FLAG_VLF  BIT(1)
44
-#define RX8010_FLAG_AF   BIT(3)
45
-#define RX8010_FLAG_TF   BIT(4)
46
-#define RX8010_FLAG_UF   BIT(5)
40
+#define RX8010_FLAG_VLF		BIT(1)
41
+#define RX8010_FLAG_AF		BIT(3)
42
+#define RX8010_FLAG_TF		BIT(4)
43
+#define RX8010_FLAG_UF		BIT(5)
4744 
48
-#define RX8010_CTRL_AIE  BIT(3)
49
-#define RX8010_CTRL_UIE  BIT(5)
50
-#define RX8010_CTRL_STOP BIT(6)
51
-#define RX8010_CTRL_TEST BIT(7)
45
+#define RX8010_CTRL_AIE		BIT(3)
46
+#define RX8010_CTRL_UIE		BIT(5)
47
+#define RX8010_CTRL_STOP	BIT(6)
48
+#define RX8010_CTRL_TEST	BIT(7)
5249 
53
-#define RX8010_ALARM_AE  BIT(7)
50
+#define RX8010_ALARM_AE		BIT(7)
5451 
5552 static const struct i2c_device_id rx8010_id[] = {
5653 	{ "rx8010", 0 },
....@@ -65,7 +62,7 @@
6562 MODULE_DEVICE_TABLE(of, rx8010_of_match);
6663 
6764 struct rx8010_data {
68
-	struct i2c_client *client;
65
+	struct regmap *regs;
6966 	struct rtc_device *rtc;
7067 	u8 ctrlreg;
7168 };
....@@ -74,13 +71,12 @@
7471 {
7572 	struct i2c_client *client = dev_id;
7673 	struct rx8010_data *rx8010 = i2c_get_clientdata(client);
77
-	int flagreg;
74
+	int flagreg, err;
7875 
7976 	mutex_lock(&rx8010->rtc->ops_lock);
8077 
81
-	flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG);
82
-
83
-	if (flagreg <= 0) {
78
+	err = regmap_read(rx8010->regs, RX8010_FLAG, &flagreg);
79
+	if (err) {
8480 		mutex_unlock(&rx8010->rtc->ops_lock);
8581 		return IRQ_NONE;
8682 	}
....@@ -103,32 +99,29 @@
10399 		rtc_update_irq(rx8010->rtc, 1, RTC_UF | RTC_IRQF);
104100 	}
105101 
106
-	i2c_smbus_write_byte_data(client, RX8010_FLAG, flagreg);
107
-
102
+	err = regmap_write(rx8010->regs, RX8010_FLAG, flagreg);
108103 	mutex_unlock(&rx8010->rtc->ops_lock);
109
-	return IRQ_HANDLED;
104
+	return err ? IRQ_NONE : IRQ_HANDLED;
110105 }
111106 
112107 static int rx8010_get_time(struct device *dev, struct rtc_time *dt)
113108 {
114109 	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
115
-	u8 date[7];
116
-	int flagreg;
117
-	int err;
110
+	u8 date[RX8010_YEAR - RX8010_SEC + 1];
111
+	int flagreg, err;
118112 
119
-	flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
120
-	if (flagreg < 0)
121
-		return flagreg;
113
+	err = regmap_read(rx8010->regs, RX8010_FLAG, &flagreg);
114
+	if (err)
115
+		return err;
122116 
123117 	if (flagreg & RX8010_FLAG_VLF) {
124118 		dev_warn(dev, "Frequency stop detected\n");
125119 		return -EINVAL;
126120 	}
127121 
128
-	err = i2c_smbus_read_i2c_block_data(rx8010->client, RX8010_SEC,
129
-					    7, date);
130
-	if (err != 7)
131
-		return err < 0 ? err : -EIO;
122
+	err = regmap_bulk_read(rx8010->regs, RX8010_SEC, date, sizeof(date));
123
+	if (err)
124
+		return err;
132125 
133126 	dt->tm_sec = bcd2bin(date[RX8010_SEC - RX8010_SEC] & 0x7f);
134127 	dt->tm_min = bcd2bin(date[RX8010_MIN - RX8010_SEC] & 0x7f);
....@@ -144,22 +137,13 @@
144137 static int rx8010_set_time(struct device *dev, struct rtc_time *dt)
145138 {
146139 	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
147
-	u8 date[7];
148
-	int ctrl, flagreg;
149
-	int ret;
150
-
151
-	if ((dt->tm_year < 100) || (dt->tm_year > 199))
152
-		return -EINVAL;
140
+	u8 date[RX8010_YEAR - RX8010_SEC + 1];
141
+	int err;
153142 
154143 	/* set STOP bit before changing clock/calendar */
155
-	ctrl = i2c_smbus_read_byte_data(rx8010->client, RX8010_CTRL);
156
-	if (ctrl < 0)
157
-		return ctrl;
158
-	rx8010->ctrlreg = ctrl | RX8010_CTRL_STOP;
159
-	ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
160
-					rx8010->ctrlreg);
161
-	if (ret < 0)
162
-		return ret;
144
+	err = regmap_set_bits(rx8010->regs, RX8010_CTRL, RX8010_CTRL_STOP);
145
+	if (err)
146
+		return err;
163147 
164148 	date[RX8010_SEC - RX8010_SEC] = bin2bcd(dt->tm_sec);
165149 	date[RX8010_MIN - RX8010_SEC] = bin2bcd(dt->tm_min);
....@@ -169,66 +153,54 @@
169153 	date[RX8010_YEAR - RX8010_SEC] = bin2bcd(dt->tm_year - 100);
170154 	date[RX8010_WDAY - RX8010_SEC] = bin2bcd(1 << dt->tm_wday);
171155 
172
-	ret = i2c_smbus_write_i2c_block_data(rx8010->client,
173
-					     RX8010_SEC, 7, date);
174
-	if (ret < 0)
175
-		return ret;
156
+	err = regmap_bulk_write(rx8010->regs, RX8010_SEC, date, sizeof(date));
157
+	if (err)
158
+		return err;
176159 
177160 	/* clear STOP bit after changing clock/calendar */
178
-	ctrl = i2c_smbus_read_byte_data(rx8010->client, RX8010_CTRL);
179
-	if (ctrl < 0)
180
-		return ctrl;
181
-	rx8010->ctrlreg = ctrl & ~RX8010_CTRL_STOP;
182
-	ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
183
-					rx8010->ctrlreg);
184
-	if (ret < 0)
185
-		return ret;
161
+	err = regmap_clear_bits(rx8010->regs, RX8010_CTRL, RX8010_CTRL_STOP);
162
+	if (err)
163
+		return err;
186164 
187
-	flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
188
-	if (flagreg < 0) {
189
-		return flagreg;
190
-	}
191
-
192
-	if (flagreg & RX8010_FLAG_VLF)
193
-		ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG,
194
-						flagreg & ~RX8010_FLAG_VLF);
165
+	err = regmap_clear_bits(rx8010->regs, RX8010_FLAG, RX8010_FLAG_VLF);
166
+	if (err)
167
+		return err;
195168 
196169 	return 0;
197170 }
198171 
199
-static int rx8010_init_client(struct i2c_client *client)
172
+static int rx8010_init(struct device *dev)
200173 {
201
-	struct rx8010_data *rx8010 = i2c_get_clientdata(client);
174
+	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
202175 	u8 ctrl[2];
203
-	int need_clear = 0, err = 0;
176
+	int need_clear = 0, err;
204177 
205178 	/* Initialize reserved registers as specified in datasheet */
206
-	err = i2c_smbus_write_byte_data(client, RX8010_RESV17, 0xD8);
207
-	if (err < 0)
179
+	err = regmap_write(rx8010->regs, RX8010_RESV17, 0xD8);
180
+	if (err)
208181 		return err;
209182 
210
-	err = i2c_smbus_write_byte_data(client, RX8010_RESV30, 0x00);
211
-	if (err < 0)
183
+	err = regmap_write(rx8010->regs, RX8010_RESV30, 0x00);
184
+	if (err)
212185 		return err;
213186 
214
-	err = i2c_smbus_write_byte_data(client, RX8010_RESV31, 0x08);
215
-	if (err < 0)
187
+	err = regmap_write(rx8010->regs, RX8010_RESV31, 0x08);
188
+	if (err)
216189 		return err;
217190 
218
-	err = i2c_smbus_write_byte_data(client, RX8010_IRQ, 0x00);
219
-	if (err < 0)
191
+	err = regmap_write(rx8010->regs, RX8010_IRQ, 0x00);
192
+	if (err)
220193 		return err;
221194 
222
-	err = i2c_smbus_read_i2c_block_data(rx8010->client, RX8010_FLAG,
223
-					    2, ctrl);
224
-	if (err != 2)
225
-		return err < 0 ? err : -EIO;
195
+	err = regmap_bulk_read(rx8010->regs, RX8010_FLAG, ctrl, 2);
196
+	if (err)
197
+		return err;
226198 
227199 	if (ctrl[0] & RX8010_FLAG_VLF)
228
-		dev_warn(&client->dev, "Frequency stop was detected\n");
200
+		dev_warn(dev, "Frequency stop was detected\n");
229201 
230202 	if (ctrl[0] & RX8010_FLAG_AF) {
231
-		dev_warn(&client->dev, "Alarm was detected\n");
203
+		dev_warn(dev, "Alarm was detected\n");
232204 		need_clear = 1;
233205 	}
234206 
....@@ -240,8 +212,8 @@
240212 
241213 	if (need_clear) {
242214 		ctrl[0] &= ~(RX8010_FLAG_AF | RX8010_FLAG_TF | RX8010_FLAG_UF);
243
-		err = i2c_smbus_write_byte_data(client, RX8010_FLAG, ctrl[0]);
244
-		if (err < 0)
215
+		err = regmap_write(rx8010->regs, RX8010_FLAG, ctrl[0]);
216
+		if (err)
245217 			return err;
246218 	}
247219 
....@@ -253,18 +225,16 @@
253225 static int rx8010_read_alarm(struct device *dev, struct rtc_wkalrm *t)
254226 {
255227 	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
256
-	struct i2c_client *client = rx8010->client;
257228 	u8 alarmvals[3];
258
-	int flagreg;
259
-	int err;
229
+	int flagreg, err;
260230 
261
-	err = i2c_smbus_read_i2c_block_data(client, RX8010_ALMIN, 3, alarmvals);
262
-	if (err != 3)
263
-		return err < 0 ? err : -EIO;
231
+	err = regmap_bulk_read(rx8010->regs, RX8010_ALMIN, alarmvals, 3);
232
+	if (err)
233
+		return err;
264234 
265
-	flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG);
266
-	if (flagreg < 0)
267
-		return flagreg;
235
+	err = regmap_read(rx8010->regs, RX8010_FLAG, &flagreg);
236
+	if (err)
237
+		return err;
268238 
269239 	t->time.tm_sec = 0;
270240 	t->time.tm_min = bcd2bin(alarmvals[0] & 0x7f);
....@@ -281,55 +251,38 @@
281251 
282252 static int rx8010_set_alarm(struct device *dev, struct rtc_wkalrm *t)
283253 {
284
-	struct i2c_client *client = to_i2c_client(dev);
285254 	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
286255 	u8 alarmvals[3];
287
-	int extreg, flagreg;
288256 	int err;
289
-
290
-	flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG);
291
-	if (flagreg < 0) {
292
-		return flagreg;
293
-	}
294257 
295258 	if (rx8010->ctrlreg & (RX8010_CTRL_AIE | RX8010_CTRL_UIE)) {
296259 		rx8010->ctrlreg &= ~(RX8010_CTRL_AIE | RX8010_CTRL_UIE);
297
-		err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
298
-						rx8010->ctrlreg);
299
-		if (err < 0) {
260
+		err = regmap_write(rx8010->regs, RX8010_CTRL, rx8010->ctrlreg);
261
+		if (err)
300262 			return err;
301
-		}
302263 	}
303264 
304
-	flagreg &= ~RX8010_FLAG_AF;
305
-	err = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG, flagreg);
306
-	if (err < 0)
265
+	err = regmap_clear_bits(rx8010->regs, RX8010_FLAG, RX8010_FLAG_AF);
266
+	if (err)
307267 		return err;
308268 
309269 	alarmvals[0] = bin2bcd(t->time.tm_min);
310270 	alarmvals[1] = bin2bcd(t->time.tm_hour);
311271 	alarmvals[2] = bin2bcd(t->time.tm_mday);
312272 
313
-	err = i2c_smbus_write_i2c_block_data(rx8010->client, RX8010_ALMIN,
314
-					     2, alarmvals);
315
-	if (err < 0)
273
+	err = regmap_bulk_write(rx8010->regs, RX8010_ALMIN, alarmvals, 2);
274
+	if (err)
316275 		return err;
317276 
318
-	extreg = i2c_smbus_read_byte_data(client, RX8010_EXT);
319
-	if (extreg < 0)
320
-		return extreg;
321
-
322
-	extreg |= RX8010_EXT_WADA;
323
-	err = i2c_smbus_write_byte_data(rx8010->client, RX8010_EXT, extreg);
324
-	if (err < 0)
277
+	err = regmap_clear_bits(rx8010->regs, RX8010_EXT, RX8010_EXT_WADA);
278
+	if (err)
325279 		return err;
326280 
327281 	if (alarmvals[2] == 0)
328282 		alarmvals[2] |= RX8010_ALARM_AE;
329283 
330
-	err = i2c_smbus_write_byte_data(rx8010->client, RX8010_ALWDAY,
331
-					alarmvals[2]);
332
-	if (err < 0)
284
+	err = regmap_write(rx8010->regs, RX8010_ALWDAY, alarmvals[2]);
285
+	if (err)
333286 		return err;
334287 
335288 	if (t->enabled) {
....@@ -339,9 +292,8 @@
339292 			rx8010->ctrlreg |=
340293 				(RX8010_CTRL_AIE | RX8010_CTRL_UIE);
341294 
342
-		err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
343
-						rx8010->ctrlreg);
344
-		if (err < 0)
295
+		err = regmap_write(rx8010->regs, RX8010_CTRL, rx8010->ctrlreg);
296
+		if (err)
345297 			return err;
346298 	}
347299 
....@@ -351,11 +303,9 @@
351303 static int rx8010_alarm_irq_enable(struct device *dev,
352304 				   unsigned int enabled)
353305 {
354
-	struct i2c_client *client = to_i2c_client(dev);
355306 	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
356
-	int flagreg;
357
-	u8 ctrl;
358307 	int err;
308
+	u8 ctrl;
359309 
360310 	ctrl = rx8010->ctrlreg;
361311 
....@@ -371,20 +321,14 @@
371321 			ctrl &= ~RX8010_CTRL_AIE;
372322 	}
373323 
374
-	flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG);
375
-	if (flagreg < 0)
376
-		return flagreg;
377
-
378
-	flagreg &= ~RX8010_FLAG_AF;
379
-	err = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG, flagreg);
380
-	if (err < 0)
324
+	err = regmap_clear_bits(rx8010->regs, RX8010_FLAG, RX8010_FLAG_AF);
325
+	if (err)
381326 		return err;
382327 
383328 	if (ctrl != rx8010->ctrlreg) {
384329 		rx8010->ctrlreg = ctrl;
385
-		err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
386
-						rx8010->ctrlreg);
387
-		if (err < 0)
330
+		err = regmap_write(rx8010->regs, RX8010_CTRL, rx8010->ctrlreg);
331
+		if (err)
388332 			return err;
389333 	}
390334 
....@@ -393,35 +337,17 @@
393337 
394338 static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
395339 {
396
-	struct i2c_client *client = to_i2c_client(dev);
397340 	struct rx8010_data *rx8010 = dev_get_drvdata(dev);
398
-	int ret, tmp;
399
-	int flagreg;
341
+	int tmp, flagreg, err;
400342 
401343 	switch (cmd) {
402344 	case RTC_VL_READ:
403
-		flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
404
-		if (flagreg < 0)
405
-			return flagreg;
345
+		err = regmap_read(rx8010->regs, RX8010_FLAG, &flagreg);
346
+		if (err)
347
+			return err;
406348 
407
-		tmp = !!(flagreg & RX8010_FLAG_VLF);
408
-		if (copy_to_user((void __user *)arg, &tmp, sizeof(int)))
409
-			return -EFAULT;
410
-
411
-		return 0;
412
-
413
-	case RTC_VL_CLR:
414
-		flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
415
-		if (flagreg < 0) {
416
-			return flagreg;
417
-		}
418
-
419
-		flagreg &= ~RX8010_FLAG_VLF;
420
-		ret = i2c_smbus_write_byte_data(client, RX8010_FLAG, flagreg);
421
-		if (ret < 0)
422
-			return ret;
423
-
424
-		return 0;
349
+		tmp = flagreg & RX8010_FLAG_VLF ? RTC_VL_DATA_INVALID : 0;
350
+		return put_user(tmp, (unsigned int __user *)arg);
425351 
426352 	default:
427353 		return -ENOIOCTLCMD;
....@@ -443,60 +369,57 @@
443369 	.alarm_irq_enable = rx8010_alarm_irq_enable,
444370 };
445371 
446
-static int rx8010_probe(struct i2c_client *client,
447
-			const struct i2c_device_id *id)
372
+static const struct regmap_config rx8010_regmap_config = {
373
+	.name = "rx8010-rtc",
374
+	.reg_bits = 8,
375
+	.val_bits = 8,
376
+};
377
+
378
+static int rx8010_probe(struct i2c_client *client)
448379 {
449
-	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
450
-	const struct rtc_class_ops *rtc_ops;
380
+	struct device *dev = &client->dev;
451381 	struct rx8010_data *rx8010;
452382 	int err = 0;
453383 
454
-	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA
455
-		| I2C_FUNC_SMBUS_I2C_BLOCK)) {
456
-		dev_err(&adapter->dev, "doesn't support required functionality\n");
457
-		return -EIO;
458
-	}
459
-
460
-	rx8010 = devm_kzalloc(&client->dev, sizeof(struct rx8010_data),
461
-			      GFP_KERNEL);
384
+	rx8010 = devm_kzalloc(dev, sizeof(*rx8010), GFP_KERNEL);
462385 	if (!rx8010)
463386 		return -ENOMEM;
464387 
465
-	rx8010->client = client;
466388 	i2c_set_clientdata(client, rx8010);
467389 
468
-	err = rx8010_init_client(client);
390
+	rx8010->regs = devm_regmap_init_i2c(client, &rx8010_regmap_config);
391
+	if (IS_ERR(rx8010->regs))
392
+		return PTR_ERR(rx8010->regs);
393
+
394
+	err = rx8010_init(dev);
469395 	if (err)
470396 		return err;
471397 
398
+	rx8010->rtc = devm_rtc_allocate_device(dev);
399
+	if (IS_ERR(rx8010->rtc))
400
+		return PTR_ERR(rx8010->rtc);
401
+
472402 	if (client->irq > 0) {
473
-		dev_info(&client->dev, "IRQ %d supplied\n", client->irq);
474
-		err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
403
+		dev_info(dev, "IRQ %d supplied\n", client->irq);
404
+		err = devm_request_threaded_irq(dev, client->irq, NULL,
475405 						rx8010_irq_1_handler,
476406 						IRQF_TRIGGER_LOW | IRQF_ONESHOT,
477407 						"rx8010", client);
478
-
479408 		if (err) {
480
-			dev_err(&client->dev, "unable to request IRQ\n");
409
+			dev_err(dev, "unable to request IRQ\n");
481410 			return err;
482411 		}
483412 
484
-		rtc_ops = &rx8010_rtc_ops_alarm;
413
+		rx8010->rtc->ops = &rx8010_rtc_ops_alarm;
485414 	} else {
486
-		rtc_ops = &rx8010_rtc_ops_default;
487
-	}
488
-
489
-	rx8010->rtc = devm_rtc_device_register(&client->dev, client->name,
490
-					       rtc_ops, THIS_MODULE);
491
-
492
-	if (IS_ERR(rx8010->rtc)) {
493
-		dev_err(&client->dev, "unable to register the class device\n");
494
-		return PTR_ERR(rx8010->rtc);
415
+		rx8010->rtc->ops = &rx8010_rtc_ops_default;
495416 	}
496417 
497418 	rx8010->rtc->max_user_freq = 1;
419
+	rx8010->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
420
+	rx8010->rtc->range_max = RTC_TIMESTAMP_END_2099;
498421 
499
-	return err;
422
+	return rtc_register_device(rx8010->rtc);
500423 }
501424 
502425 static struct i2c_driver rx8010_driver = {
....@@ -504,7 +427,7 @@
504427 		.name = "rtc-rx8010",
505428 		.of_match_table = of_match_ptr(rx8010_of_match),
506429 	},
507
-	.probe		= rx8010_probe,
430
+	.probe_new	= rx8010_probe,
508431 	.id_table	= rx8010_id,
509432 };
510433