blob: 1df5c7e94198054e9c34d1e7d0525dbcc6d356f7 [file] [log] [blame]
Nobuhiro Iwamatsu9734a1a2021-07-07 16:58:04 +09001// SPDX-License-Identifier: GPL-2.0-only
Rajeev Kumar0942a712011-05-26 16:25:09 -07002/*
3 * drivers/rtc/rtc-spear.c
4 *
5 * Copyright (C) 2010 ST Microelectronics
6 * Rajeev Kumar<rajeev-dlh.kumar@st.com>
Rajeev Kumar0942a712011-05-26 16:25:09 -07007 */
8
9#include <linux/bcd.h>
10#include <linux/clk.h>
11#include <linux/delay.h>
12#include <linux/init.h>
13#include <linux/io.h>
14#include <linux/irq.h>
15#include <linux/module.h>
Viresh Kumar0108c4f2012-05-29 15:07:35 -070016#include <linux/of.h>
Rajeev Kumar0942a712011-05-26 16:25:09 -070017#include <linux/platform_device.h>
18#include <linux/rtc.h>
19#include <linux/slab.h>
20#include <linux/spinlock.h>
21
22/* RTC registers */
23#define TIME_REG 0x00
24#define DATE_REG 0x04
25#define ALARM_TIME_REG 0x08
26#define ALARM_DATE_REG 0x0C
27#define CTRL_REG 0x10
28#define STATUS_REG 0x14
29
30/* TIME_REG & ALARM_TIME_REG */
31#define SECONDS_UNITS (0xf<<0) /* seconds units position */
32#define SECONDS_TENS (0x7<<4) /* seconds tens position */
33#define MINUTES_UNITS (0xf<<8) /* minutes units position */
34#define MINUTES_TENS (0x7<<12) /* minutes tens position */
35#define HOURS_UNITS (0xf<<16) /* hours units position */
36#define HOURS_TENS (0x3<<20) /* hours tens position */
37
38/* DATE_REG & ALARM_DATE_REG */
39#define DAYS_UNITS (0xf<<0) /* days units position */
40#define DAYS_TENS (0x3<<4) /* days tens position */
41#define MONTHS_UNITS (0xf<<8) /* months units position */
42#define MONTHS_TENS (0x1<<12) /* months tens position */
43#define YEARS_UNITS (0xf<<16) /* years units position */
44#define YEARS_TENS (0xf<<20) /* years tens position */
45#define YEARS_HUNDREDS (0xf<<24) /* years hundereds position */
46#define YEARS_MILLENIUMS (0xf<<28) /* years millenium position */
47
48/* MASK SHIFT TIME_REG & ALARM_TIME_REG*/
49#define SECOND_SHIFT 0x00 /* seconds units */
50#define MINUTE_SHIFT 0x08 /* minutes units position */
51#define HOUR_SHIFT 0x10 /* hours units position */
52#define MDAY_SHIFT 0x00 /* Month day shift */
53#define MONTH_SHIFT 0x08 /* Month shift */
54#define YEAR_SHIFT 0x10 /* Year shift */
55
56#define SECOND_MASK 0x7F
57#define MIN_MASK 0x7F
58#define HOUR_MASK 0x3F
59#define DAY_MASK 0x3F
60#define MONTH_MASK 0x7F
61#define YEAR_MASK 0xFFFF
62
63/* date reg equal to time reg, for debug only */
64#define TIME_BYP (1<<9)
65#define INT_ENABLE (1<<31) /* interrupt enable */
66
67/* STATUS_REG */
68#define CLK_UNCONNECTED (1<<0)
69#define PEND_WR_TIME (1<<2)
70#define PEND_WR_DATE (1<<3)
71#define LOST_WR_TIME (1<<4)
72#define LOST_WR_DATE (1<<5)
73#define RTC_INT_MASK (1<<31)
74#define STATUS_BUSY (PEND_WR_TIME | PEND_WR_DATE)
75#define STATUS_FAIL (LOST_WR_TIME | LOST_WR_DATE)
76
77struct spear_rtc_config {
Viresh Kumaree6c54c2012-03-23 15:02:30 -070078 struct rtc_device *rtc;
Rajeev Kumar0942a712011-05-26 16:25:09 -070079 struct clk *clk;
80 spinlock_t lock;
81 void __iomem *ioaddr;
Deepak Sikricd0e08a2012-03-23 15:02:29 -070082 unsigned int irq_wake;
Rajeev Kumar0942a712011-05-26 16:25:09 -070083};
84
85static inline void spear_rtc_clear_interrupt(struct spear_rtc_config *config)
86{
87 unsigned int val;
88 unsigned long flags;
89
90 spin_lock_irqsave(&config->lock, flags);
91 val = readl(config->ioaddr + STATUS_REG);
92 val |= RTC_INT_MASK;
93 writel(val, config->ioaddr + STATUS_REG);
94 spin_unlock_irqrestore(&config->lock, flags);
95}
96
97static inline void spear_rtc_enable_interrupt(struct spear_rtc_config *config)
98{
99 unsigned int val;
100
101 val = readl(config->ioaddr + CTRL_REG);
102 if (!(val & INT_ENABLE)) {
103 spear_rtc_clear_interrupt(config);
104 val |= INT_ENABLE;
105 writel(val, config->ioaddr + CTRL_REG);
106 }
107}
108
109static inline void spear_rtc_disable_interrupt(struct spear_rtc_config *config)
110{
111 unsigned int val;
112
113 val = readl(config->ioaddr + CTRL_REG);
114 if (val & INT_ENABLE) {
115 val &= ~INT_ENABLE;
116 writel(val, config->ioaddr + CTRL_REG);
117 }
118}
119
120static inline int is_write_complete(struct spear_rtc_config *config)
121{
122 int ret = 0;
123 unsigned long flags;
124
125 spin_lock_irqsave(&config->lock, flags);
126 if ((readl(config->ioaddr + STATUS_REG)) & STATUS_FAIL)
127 ret = -EIO;
128 spin_unlock_irqrestore(&config->lock, flags);
129
130 return ret;
131}
132
133static void rtc_wait_not_busy(struct spear_rtc_config *config)
134{
135 int status, count = 0;
136 unsigned long flags;
137
138 /* Assuming BUSY may stay active for 80 msec) */
139 for (count = 0; count < 80; count++) {
140 spin_lock_irqsave(&config->lock, flags);
141 status = readl(config->ioaddr + STATUS_REG);
142 spin_unlock_irqrestore(&config->lock, flags);
143 if ((status & STATUS_BUSY) == 0)
144 break;
145 /* check status busy, after each msec */
146 msleep(1);
147 }
148}
149
150static irqreturn_t spear_rtc_irq(int irq, void *dev_id)
151{
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700152 struct spear_rtc_config *config = dev_id;
Tian Tao880f25d2021-03-15 10:39:30 +0800153 unsigned long events = 0;
Rajeev Kumar0942a712011-05-26 16:25:09 -0700154 unsigned int irq_data;
155
Tian Tao880f25d2021-03-15 10:39:30 +0800156 spin_lock(&config->lock);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700157 irq_data = readl(config->ioaddr + STATUS_REG);
Tian Tao880f25d2021-03-15 10:39:30 +0800158 spin_unlock(&config->lock);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700159
160 if ((irq_data & RTC_INT_MASK)) {
161 spear_rtc_clear_interrupt(config);
162 events = RTC_IRQF | RTC_AF;
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700163 rtc_update_irq(config->rtc, 1, events);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700164 return IRQ_HANDLED;
165 } else
166 return IRQ_NONE;
167
168}
169
Alexandre Belloni9fb7aa72018-02-21 11:23:19 +0100170static void tm2bcd(struct rtc_time *tm)
Rajeev Kumar0942a712011-05-26 16:25:09 -0700171{
Rajeev Kumar0942a712011-05-26 16:25:09 -0700172 tm->tm_sec = bin2bcd(tm->tm_sec);
173 tm->tm_min = bin2bcd(tm->tm_min);
174 tm->tm_hour = bin2bcd(tm->tm_hour);
175 tm->tm_mday = bin2bcd(tm->tm_mday);
176 tm->tm_mon = bin2bcd(tm->tm_mon + 1);
177 tm->tm_year = bin2bcd(tm->tm_year);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700178}
179
180static void bcd2tm(struct rtc_time *tm)
181{
182 tm->tm_sec = bcd2bin(tm->tm_sec);
183 tm->tm_min = bcd2bin(tm->tm_min);
184 tm->tm_hour = bcd2bin(tm->tm_hour);
185 tm->tm_mday = bcd2bin(tm->tm_mday);
186 tm->tm_mon = bcd2bin(tm->tm_mon) - 1;
187 /* epoch == 1900 */
188 tm->tm_year = bcd2bin(tm->tm_year);
189}
190
191/*
192 * spear_rtc_read_time - set the time
193 * @dev: rtc device in use
194 * @tm: holds date and time
195 *
196 * This function read time and date. On success it will return 0
197 * otherwise -ve error is returned.
198 */
199static int spear_rtc_read_time(struct device *dev, struct rtc_time *tm)
200{
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700201 struct spear_rtc_config *config = dev_get_drvdata(dev);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700202 unsigned int time, date;
203
204 /* we don't report wday/yday/isdst ... */
205 rtc_wait_not_busy(config);
206
Alexandre Bellonia87a07a2022-03-09 17:22:52 +0100207 do {
208 time = readl(config->ioaddr + TIME_REG);
209 date = readl(config->ioaddr + DATE_REG);
210 } while (time == readl(config->ioaddr + TIME_REG));
Rajeev Kumar0942a712011-05-26 16:25:09 -0700211 tm->tm_sec = (time >> SECOND_SHIFT) & SECOND_MASK;
212 tm->tm_min = (time >> MINUTE_SHIFT) & MIN_MASK;
213 tm->tm_hour = (time >> HOUR_SHIFT) & HOUR_MASK;
214 tm->tm_mday = (date >> MDAY_SHIFT) & DAY_MASK;
215 tm->tm_mon = (date >> MONTH_SHIFT) & MONTH_MASK;
216 tm->tm_year = (date >> YEAR_SHIFT) & YEAR_MASK;
217
218 bcd2tm(tm);
219 return 0;
220}
221
222/*
223 * spear_rtc_set_time - set the time
224 * @dev: rtc device in use
225 * @tm: holds date and time
226 *
227 * This function set time and date. On success it will return 0
228 * otherwise -ve error is returned.
229 */
230static int spear_rtc_set_time(struct device *dev, struct rtc_time *tm)
231{
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700232 struct spear_rtc_config *config = dev_get_drvdata(dev);
Lars-Peter Clausena16e8392012-10-04 17:14:01 -0700233 unsigned int time, date;
Rajeev Kumar0942a712011-05-26 16:25:09 -0700234
Alexandre Belloni9fb7aa72018-02-21 11:23:19 +0100235 tm2bcd(tm);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700236
237 rtc_wait_not_busy(config);
238 time = (tm->tm_sec << SECOND_SHIFT) | (tm->tm_min << MINUTE_SHIFT) |
239 (tm->tm_hour << HOUR_SHIFT);
240 date = (tm->tm_mday << MDAY_SHIFT) | (tm->tm_mon << MONTH_SHIFT) |
241 (tm->tm_year << YEAR_SHIFT);
242 writel(time, config->ioaddr + TIME_REG);
243 writel(date, config->ioaddr + DATE_REG);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700244
Lars-Peter Clausena16e8392012-10-04 17:14:01 -0700245 return is_write_complete(config);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700246}
247
248/*
249 * spear_rtc_read_alarm - read the alarm time
250 * @dev: rtc device in use
251 * @alm: holds alarm date and time
252 *
253 * This function read alarm time and date. On success it will return 0
254 * otherwise -ve error is returned.
255 */
256static int spear_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
257{
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700258 struct spear_rtc_config *config = dev_get_drvdata(dev);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700259 unsigned int time, date;
260
261 rtc_wait_not_busy(config);
262
263 time = readl(config->ioaddr + ALARM_TIME_REG);
264 date = readl(config->ioaddr + ALARM_DATE_REG);
265 alm->time.tm_sec = (time >> SECOND_SHIFT) & SECOND_MASK;
266 alm->time.tm_min = (time >> MINUTE_SHIFT) & MIN_MASK;
267 alm->time.tm_hour = (time >> HOUR_SHIFT) & HOUR_MASK;
268 alm->time.tm_mday = (date >> MDAY_SHIFT) & DAY_MASK;
269 alm->time.tm_mon = (date >> MONTH_SHIFT) & MONTH_MASK;
270 alm->time.tm_year = (date >> YEAR_SHIFT) & YEAR_MASK;
271
272 bcd2tm(&alm->time);
273 alm->enabled = readl(config->ioaddr + CTRL_REG) & INT_ENABLE;
274
275 return 0;
276}
277
278/*
279 * spear_rtc_set_alarm - set the alarm time
280 * @dev: rtc device in use
281 * @alm: holds alarm date and time
282 *
283 * This function set alarm time and date. On success it will return 0
284 * otherwise -ve error is returned.
285 */
286static int spear_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
287{
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700288 struct spear_rtc_config *config = dev_get_drvdata(dev);
Lars-Peter Clausena16e8392012-10-04 17:14:01 -0700289 unsigned int time, date;
290 int err;
Rajeev Kumar0942a712011-05-26 16:25:09 -0700291
Alexandre Belloni9fb7aa72018-02-21 11:23:19 +0100292 tm2bcd(&alm->time);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700293
294 rtc_wait_not_busy(config);
295
296 time = (alm->time.tm_sec << SECOND_SHIFT) | (alm->time.tm_min <<
297 MINUTE_SHIFT) | (alm->time.tm_hour << HOUR_SHIFT);
298 date = (alm->time.tm_mday << MDAY_SHIFT) | (alm->time.tm_mon <<
299 MONTH_SHIFT) | (alm->time.tm_year << YEAR_SHIFT);
300
301 writel(time, config->ioaddr + ALARM_TIME_REG);
302 writel(date, config->ioaddr + ALARM_DATE_REG);
303 err = is_write_complete(config);
304 if (err < 0)
305 return err;
306
307 if (alm->enabled)
308 spear_rtc_enable_interrupt(config);
309 else
310 spear_rtc_disable_interrupt(config);
311
312 return 0;
313}
Shiraz Hashim131f8b72012-03-23 15:02:29 -0700314
315static int spear_alarm_irq_enable(struct device *dev, unsigned int enabled)
316{
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700317 struct spear_rtc_config *config = dev_get_drvdata(dev);
Shiraz Hashim131f8b72012-03-23 15:02:29 -0700318 int ret = 0;
319
320 spear_rtc_clear_interrupt(config);
321
322 switch (enabled) {
323 case 0:
324 /* alarm off */
325 spear_rtc_disable_interrupt(config);
326 break;
327 case 1:
328 /* alarm on */
329 spear_rtc_enable_interrupt(config);
330 break;
331 default:
332 ret = -EINVAL;
333 break;
334 }
335
336 return ret;
337}
338
Julia Lawall34c7b3a2016-08-31 10:05:25 +0200339static const struct rtc_class_ops spear_rtc_ops = {
Rajeev Kumar0942a712011-05-26 16:25:09 -0700340 .read_time = spear_rtc_read_time,
341 .set_time = spear_rtc_set_time,
342 .read_alarm = spear_rtc_read_alarm,
343 .set_alarm = spear_rtc_set_alarm,
Shiraz Hashim131f8b72012-03-23 15:02:29 -0700344 .alarm_irq_enable = spear_alarm_irq_enable,
Rajeev Kumar0942a712011-05-26 16:25:09 -0700345};
346
Greg Kroah-Hartman5a167f42012-12-21 13:09:38 -0800347static int spear_rtc_probe(struct platform_device *pdev)
Rajeev Kumar0942a712011-05-26 16:25:09 -0700348{
Rajeev Kumar0942a712011-05-26 16:25:09 -0700349 struct spear_rtc_config *config;
Lars-Peter Clausena16e8392012-10-04 17:14:01 -0700350 int status = 0;
Rajeev Kumar0942a712011-05-26 16:25:09 -0700351 int irq;
352
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800353 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
Jingoo Han681acc92014-04-03 14:49:46 -0700354 if (!config)
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800355 return -ENOMEM;
Rajeev Kumar0942a712011-05-26 16:25:09 -0700356
Alexandre Belloni4fc4d332022-03-09 17:22:49 +0100357 config->rtc = devm_rtc_allocate_device(&pdev->dev);
358 if (IS_ERR(config->rtc))
359 return PTR_ERR(config->rtc);
360
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800361 /* alarm irqs */
362 irq = platform_get_irq(pdev, 0);
Stephen Boydfaac9102019-07-30 11:15:39 -0700363 if (irq < 0)
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800364 return irq;
Rajeev Kumar0942a712011-05-26 16:25:09 -0700365
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800366 status = devm_request_irq(&pdev->dev, irq, spear_rtc_irq, 0, pdev->name,
367 config);
368 if (status) {
369 dev_err(&pdev->dev, "Alarm interrupt IRQ%d already claimed\n",
370 irq);
371 return status;
372 }
373
YueHaibing09ef18b2019-10-06 18:29:20 +0800374 config->ioaddr = devm_platform_ioremap_resource(pdev, 0);
Thierry Reding8cbce1e2013-01-21 11:09:17 +0100375 if (IS_ERR(config->ioaddr))
376 return PTR_ERR(config->ioaddr);
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800377
378 config->clk = devm_clk_get(&pdev->dev, NULL);
379 if (IS_ERR(config->clk))
380 return PTR_ERR(config->clk);
381
Deepak Sikri93d78392012-12-17 16:02:32 -0800382 status = clk_prepare_enable(config->clk);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700383 if (status < 0)
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800384 return status;
Rajeev Kumar0942a712011-05-26 16:25:09 -0700385
386 spin_lock_init(&config->lock);
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700387 platform_set_drvdata(pdev, config);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700388
Alexandre Belloni4fc4d332022-03-09 17:22:49 +0100389 config->rtc->ops = &spear_rtc_ops;
Alexandre Bellonif395e1d2022-03-09 17:22:50 +0100390 config->rtc->range_min = RTC_TIMESTAMP_BEGIN_0000;
Zeng Jingxiang03c4cd62022-07-28 18:01:01 +0800391 config->rtc->range_max = RTC_TIMESTAMP_END_9999;
Deepak Sikric9f5c7e2012-12-17 16:02:34 -0800392
Alexandre Belloni4fc4d332022-03-09 17:22:49 +0100393 status = devm_rtc_register_device(config->rtc);
394 if (status)
395 goto err_disable_clock;
396
Rajeev Kumar0942a712011-05-26 16:25:09 -0700397 if (!device_can_wakeup(&pdev->dev))
398 device_init_wakeup(&pdev->dev, 1);
399
400 return 0;
401
Rajeev Kumar0942a712011-05-26 16:25:09 -0700402err_disable_clock:
Deepak Sikri93d78392012-12-17 16:02:32 -0800403 clk_disable_unprepare(config->clk);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700404
405 return status;
406}
407
Uwe Kleine-König25ffc852023-03-04 14:30:18 +0100408static void spear_rtc_remove(struct platform_device *pdev)
Rajeev Kumar0942a712011-05-26 16:25:09 -0700409{
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700410 struct spear_rtc_config *config = platform_get_drvdata(pdev);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700411
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800412 spear_rtc_disable_interrupt(config);
Deepak Sikri93d78392012-12-17 16:02:32 -0800413 clk_disable_unprepare(config->clk);
Viresh Kumarbdaa2c62012-12-17 16:02:29 -0800414 device_init_wakeup(&pdev->dev, 0);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700415}
416
Jingoo Hanb086e392013-04-29 16:21:02 -0700417#ifdef CONFIG_PM_SLEEP
418static int spear_rtc_suspend(struct device *dev)
Rajeev Kumar0942a712011-05-26 16:25:09 -0700419{
Jingoo Hanb086e392013-04-29 16:21:02 -0700420 struct platform_device *pdev = to_platform_device(dev);
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700421 struct spear_rtc_config *config = platform_get_drvdata(pdev);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700422 int irq;
423
424 irq = platform_get_irq(pdev, 0);
Deepak Sikricd0e08a2012-03-23 15:02:29 -0700425 if (device_may_wakeup(&pdev->dev)) {
426 if (!enable_irq_wake(irq))
427 config->irq_wake = 1;
428 } else {
Rajeev Kumar0942a712011-05-26 16:25:09 -0700429 spear_rtc_disable_interrupt(config);
430 clk_disable(config->clk);
431 }
432
433 return 0;
434}
435
Jingoo Hanb086e392013-04-29 16:21:02 -0700436static int spear_rtc_resume(struct device *dev)
Rajeev Kumar0942a712011-05-26 16:25:09 -0700437{
Jingoo Hanb086e392013-04-29 16:21:02 -0700438 struct platform_device *pdev = to_platform_device(dev);
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700439 struct spear_rtc_config *config = platform_get_drvdata(pdev);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700440 int irq;
441
442 irq = platform_get_irq(pdev, 0);
443
Deepak Sikricd0e08a2012-03-23 15:02:29 -0700444 if (device_may_wakeup(&pdev->dev)) {
445 if (config->irq_wake) {
446 disable_irq_wake(irq);
447 config->irq_wake = 0;
448 }
449 } else {
Rajeev Kumar0942a712011-05-26 16:25:09 -0700450 clk_enable(config->clk);
451 spear_rtc_enable_interrupt(config);
452 }
453
454 return 0;
455}
Rajeev Kumar0942a712011-05-26 16:25:09 -0700456#endif
457
Jingoo Hanb086e392013-04-29 16:21:02 -0700458static SIMPLE_DEV_PM_OPS(spear_rtc_pm_ops, spear_rtc_suspend, spear_rtc_resume);
459
Rajeev Kumar0942a712011-05-26 16:25:09 -0700460static void spear_rtc_shutdown(struct platform_device *pdev)
461{
Viresh Kumaree6c54c2012-03-23 15:02:30 -0700462 struct spear_rtc_config *config = platform_get_drvdata(pdev);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700463
464 spear_rtc_disable_interrupt(config);
465 clk_disable(config->clk);
466}
467
Viresh Kumar0108c4f2012-05-29 15:07:35 -0700468#ifdef CONFIG_OF
469static const struct of_device_id spear_rtc_id_table[] = {
470 { .compatible = "st,spear600-rtc" },
471 {}
472};
473MODULE_DEVICE_TABLE(of, spear_rtc_id_table);
474#endif
475
Rajeev Kumar0942a712011-05-26 16:25:09 -0700476static struct platform_driver spear_rtc_driver = {
477 .probe = spear_rtc_probe,
Uwe Kleine-König25ffc852023-03-04 14:30:18 +0100478 .remove_new = spear_rtc_remove,
Rajeev Kumar0942a712011-05-26 16:25:09 -0700479 .shutdown = spear_rtc_shutdown,
480 .driver = {
481 .name = "rtc-spear",
Jingoo Hanb086e392013-04-29 16:21:02 -0700482 .pm = &spear_rtc_pm_ops,
Viresh Kumar0108c4f2012-05-29 15:07:35 -0700483 .of_match_table = of_match_ptr(spear_rtc_id_table),
Rajeev Kumar0942a712011-05-26 16:25:09 -0700484 },
485};
486
Axel Lin0c4eae62012-01-10 15:10:48 -0800487module_platform_driver(spear_rtc_driver);
Rajeev Kumar0942a712011-05-26 16:25:09 -0700488
489MODULE_ALIAS("platform:rtc-spear");
490MODULE_AUTHOR("Rajeev Kumar <rajeev-dlh.kumar@st.com>");
491MODULE_DESCRIPTION("ST SPEAr Realtime Clock Driver (RTC)");
492MODULE_LICENSE("GPL");