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Ben Dooks1add6782006-07-01 04:36:26 -07001/* drivers/rtc/rtc-s3c.c
2 *
Atul Dahiyae48add82010-07-20 12:19:14 +05303 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
5 *
Ben Dooks1add6782006-07-01 04:36:26 -07006 * Copyright (c) 2004,2006 Simtec Electronics
7 * Ben Dooks, <ben@simtec.co.uk>
8 * http://armlinux.simtec.co.uk/
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * S3C2410/S3C2440/S3C24XX Internal RTC Driver
15*/
16
17#include <linux/module.h>
18#include <linux/fs.h>
19#include <linux/string.h>
20#include <linux/init.h>
21#include <linux/platform_device.h>
22#include <linux/interrupt.h>
23#include <linux/rtc.h>
24#include <linux/bcd.h>
25#include <linux/clk.h>
Robert P. J. Day9974b6e2008-02-06 01:38:42 -080026#include <linux/log2.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090027#include <linux/slab.h>
Thomas Abraham39ce4082011-10-24 14:49:04 +020028#include <linux/of.h>
Sachin Kamatdbd9acb2012-07-30 14:41:48 -070029#include <linux/uaccess.h>
30#include <linux/io.h>
Ben Dooks1add6782006-07-01 04:36:26 -070031
Ben Dooks1add6782006-07-01 04:36:26 -070032#include <asm/irq.h>
Arnd Bergmannb9d7c5d2013-03-05 12:04:37 +010033#include "rtc-s3c.h"
Ben Dooks1add6782006-07-01 04:36:26 -070034
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -070035enum s3c_cpu_type {
36 TYPE_S3C2410,
Heiko Stuebner25c1a242011-12-24 10:52:19 +090037 TYPE_S3C2416,
38 TYPE_S3C2443,
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -070039 TYPE_S3C64XX,
40};
41
Tushar Beherac3cba922012-04-12 12:49:14 -070042struct s3c_rtc_drv_data {
43 int cpu_type;
44};
45
Ben Dooks1add6782006-07-01 04:36:26 -070046/* I have yet to find an S3C implementation with more than one
47 * of these rtc blocks in */
48
Atul Dahiyae48add82010-07-20 12:19:14 +053049static struct clk *rtc_clk;
Ben Dooks1add6782006-07-01 04:36:26 -070050static void __iomem *s3c_rtc_base;
Pankaj Dubeyebe75332014-04-03 14:50:19 -070051static int s3c_rtc_alarmno;
52static int s3c_rtc_tickno;
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -070053static enum s3c_cpu_type s3c_rtc_cpu_type;
Ben Dooks1add6782006-07-01 04:36:26 -070054
55static DEFINE_SPINLOCK(s3c_rtc_pie_lock);
Ben Dooks1add6782006-07-01 04:36:26 -070056
Donggeun Kim88cee8f2011-09-14 16:22:19 -070057static void s3c_rtc_alarm_clk_enable(bool enable)
58{
59 static DEFINE_SPINLOCK(s3c_rtc_alarm_clk_lock);
60 static bool alarm_clk_enabled;
61 unsigned long irq_flags;
62
63 spin_lock_irqsave(&s3c_rtc_alarm_clk_lock, irq_flags);
64 if (enable) {
65 if (!alarm_clk_enabled) {
66 clk_enable(rtc_clk);
67 alarm_clk_enabled = true;
68 }
69 } else {
70 if (alarm_clk_enabled) {
71 clk_disable(rtc_clk);
72 alarm_clk_enabled = false;
73 }
74 }
75 spin_unlock_irqrestore(&s3c_rtc_alarm_clk_lock, irq_flags);
76}
77
Ben Dooks1add6782006-07-01 04:36:26 -070078/* IRQ Handlers */
79
David Howells7d12e782006-10-05 14:55:46 +010080static irqreturn_t s3c_rtc_alarmirq(int irq, void *id)
Ben Dooks1add6782006-07-01 04:36:26 -070081{
82 struct rtc_device *rdev = id;
83
Donggeun Kimcefe4fb2011-07-25 17:13:32 -070084 clk_enable(rtc_clk);
David Brownellab6a2d72007-05-08 00:33:30 -070085 rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF);
Atul Dahiya2f3478f2010-07-20 16:02:51 +053086
87 if (s3c_rtc_cpu_type == TYPE_S3C64XX)
88 writeb(S3C2410_INTP_ALM, s3c_rtc_base + S3C2410_INTP);
89
Donggeun Kimcefe4fb2011-07-25 17:13:32 -070090 clk_disable(rtc_clk);
Donggeun Kim88cee8f2011-09-14 16:22:19 -070091
92 s3c_rtc_alarm_clk_enable(false);
93
Ben Dooks1add6782006-07-01 04:36:26 -070094 return IRQ_HANDLED;
95}
96
David Howells7d12e782006-10-05 14:55:46 +010097static irqreturn_t s3c_rtc_tickirq(int irq, void *id)
Ben Dooks1add6782006-07-01 04:36:26 -070098{
99 struct rtc_device *rdev = id;
100
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700101 clk_enable(rtc_clk);
Ben Dooks773be7e2008-07-23 21:30:45 -0700102 rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF);
Atul Dahiya2f3478f2010-07-20 16:02:51 +0530103
104 if (s3c_rtc_cpu_type == TYPE_S3C64XX)
105 writeb(S3C2410_INTP_TIC, s3c_rtc_base + S3C2410_INTP);
106
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700107 clk_disable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700108 return IRQ_HANDLED;
109}
110
111/* Update control registers */
Axel Lin2ec38a02011-03-04 17:36:19 -0800112static int s3c_rtc_setaie(struct device *dev, unsigned int enabled)
Ben Dooks1add6782006-07-01 04:36:26 -0700113{
114 unsigned int tmp;
115
Jingoo Hand4a48c22013-02-21 16:45:06 -0800116 dev_dbg(dev, "%s: aie=%d\n", __func__, enabled);
Ben Dooks1add6782006-07-01 04:36:26 -0700117
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700118 clk_enable(rtc_clk);
Ben Dooks9a654512006-08-27 01:23:22 -0700119 tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
Ben Dooks1add6782006-07-01 04:36:26 -0700120
Axel Lin2ec38a02011-03-04 17:36:19 -0800121 if (enabled)
Ben Dooks1add6782006-07-01 04:36:26 -0700122 tmp |= S3C2410_RTCALM_ALMEN;
123
Ben Dooks9a654512006-08-27 01:23:22 -0700124 writeb(tmp, s3c_rtc_base + S3C2410_RTCALM);
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700125 clk_disable(rtc_clk);
Axel Lin2ec38a02011-03-04 17:36:19 -0800126
Donggeun Kim88cee8f2011-09-14 16:22:19 -0700127 s3c_rtc_alarm_clk_enable(enabled);
128
Axel Lin2ec38a02011-03-04 17:36:19 -0800129 return 0;
Ben Dooks1add6782006-07-01 04:36:26 -0700130}
131
Ben Dooks773be7e2008-07-23 21:30:45 -0700132static int s3c_rtc_setfreq(struct device *dev, int freq)
Ben Dooks1add6782006-07-01 04:36:26 -0700133{
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700134 struct platform_device *pdev = to_platform_device(dev);
135 struct rtc_device *rtc_dev = platform_get_drvdata(pdev);
136 unsigned int tmp = 0;
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900137 int val;
Ben Dooks1add6782006-07-01 04:36:26 -0700138
Jonathan Cameron5d2a5032009-01-06 14:42:12 -0800139 if (!is_power_of_2(freq))
140 return -EINVAL;
141
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700142 clk_enable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700143 spin_lock_irq(&s3c_rtc_pie_lock);
Ben Dooks773be7e2008-07-23 21:30:45 -0700144
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900145 if (s3c_rtc_cpu_type != TYPE_S3C64XX) {
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700146 tmp = readb(s3c_rtc_base + S3C2410_TICNT);
147 tmp &= S3C2410_TICNT_ENABLE;
148 }
149
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900150 val = (rtc_dev->max_user_freq / freq) - 1;
151
152 if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) {
153 tmp |= S3C2443_TICNT_PART(val);
154 writel(S3C2443_TICNT1_PART(val), s3c_rtc_base + S3C2443_TICNT1);
155
156 if (s3c_rtc_cpu_type == TYPE_S3C2416)
157 writel(S3C2416_TICNT2_PART(val), s3c_rtc_base + S3C2416_TICNT2);
158 } else {
159 tmp |= val;
160 }
Ben Dooks1add6782006-07-01 04:36:26 -0700161
Atul Dahiya2f3478f2010-07-20 16:02:51 +0530162 writel(tmp, s3c_rtc_base + S3C2410_TICNT);
Ben Dooks1add6782006-07-01 04:36:26 -0700163 spin_unlock_irq(&s3c_rtc_pie_lock);
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700164 clk_disable(rtc_clk);
Ben Dooks773be7e2008-07-23 21:30:45 -0700165
166 return 0;
Ben Dooks1add6782006-07-01 04:36:26 -0700167}
168
169/* Time read/write */
170
171static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
172{
173 unsigned int have_retried = 0;
Ben Dooks9a654512006-08-27 01:23:22 -0700174 void __iomem *base = s3c_rtc_base;
Ben Dooks1add6782006-07-01 04:36:26 -0700175
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700176 clk_enable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700177 retry_get_time:
Ben Dooks9a654512006-08-27 01:23:22 -0700178 rtc_tm->tm_min = readb(base + S3C2410_RTCMIN);
179 rtc_tm->tm_hour = readb(base + S3C2410_RTCHOUR);
180 rtc_tm->tm_mday = readb(base + S3C2410_RTCDATE);
181 rtc_tm->tm_mon = readb(base + S3C2410_RTCMON);
182 rtc_tm->tm_year = readb(base + S3C2410_RTCYEAR);
183 rtc_tm->tm_sec = readb(base + S3C2410_RTCSEC);
Ben Dooks1add6782006-07-01 04:36:26 -0700184
Adam Buchbinder48fc7f72012-09-19 21:48:00 -0400185 /* the only way to work out whether the system was mid-update
Ben Dooks1add6782006-07-01 04:36:26 -0700186 * when we read it is to check the second counter, and if it
187 * is zero, then we re-try the entire read
188 */
189
190 if (rtc_tm->tm_sec == 0 && !have_retried) {
191 have_retried = 1;
192 goto retry_get_time;
193 }
194
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700195 rtc_tm->tm_sec = bcd2bin(rtc_tm->tm_sec);
196 rtc_tm->tm_min = bcd2bin(rtc_tm->tm_min);
197 rtc_tm->tm_hour = bcd2bin(rtc_tm->tm_hour);
198 rtc_tm->tm_mday = bcd2bin(rtc_tm->tm_mday);
199 rtc_tm->tm_mon = bcd2bin(rtc_tm->tm_mon);
200 rtc_tm->tm_year = bcd2bin(rtc_tm->tm_year);
Ben Dooks1add6782006-07-01 04:36:26 -0700201
202 rtc_tm->tm_year += 100;
MyungJoo Ham4e8896c2011-08-25 15:59:22 -0700203
Jingoo Hand4a48c22013-02-21 16:45:06 -0800204 dev_dbg(dev, "read time %04d.%02d.%02d %02d:%02d:%02d\n",
MyungJoo Ham4e8896c2011-08-25 15:59:22 -0700205 1900 + rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday,
206 rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec);
207
Ben Dooks1add6782006-07-01 04:36:26 -0700208 rtc_tm->tm_mon -= 1;
209
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700210 clk_disable(rtc_clk);
Kukjin Kim5b3ffdd2010-10-27 15:33:11 -0700211 return rtc_valid_tm(rtc_tm);
Ben Dooks1add6782006-07-01 04:36:26 -0700212}
213
214static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
215{
Ben Dooks9a654512006-08-27 01:23:22 -0700216 void __iomem *base = s3c_rtc_base;
Ben Dooks641741e2006-08-27 01:23:27 -0700217 int year = tm->tm_year - 100;
Ben Dooks1add6782006-07-01 04:36:26 -0700218
Jingoo Hand4a48c22013-02-21 16:45:06 -0800219 dev_dbg(dev, "set time %04d.%02d.%02d %02d:%02d:%02d\n",
Kukjin Kim30ffc402010-10-27 15:33:09 -0700220 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
Ben Dooks9a654512006-08-27 01:23:22 -0700221 tm->tm_hour, tm->tm_min, tm->tm_sec);
222
Ben Dooks641741e2006-08-27 01:23:27 -0700223 /* we get around y2k by simply not supporting it */
224
225 if (year < 0 || year >= 100) {
226 dev_err(dev, "rtc only supports 100 years\n");
227 return -EINVAL;
228 }
229
Jonghwan Choi2dbcd052011-12-08 14:34:02 -0800230 clk_enable(rtc_clk);
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700231 writeb(bin2bcd(tm->tm_sec), base + S3C2410_RTCSEC);
232 writeb(bin2bcd(tm->tm_min), base + S3C2410_RTCMIN);
233 writeb(bin2bcd(tm->tm_hour), base + S3C2410_RTCHOUR);
234 writeb(bin2bcd(tm->tm_mday), base + S3C2410_RTCDATE);
235 writeb(bin2bcd(tm->tm_mon + 1), base + S3C2410_RTCMON);
236 writeb(bin2bcd(year), base + S3C2410_RTCYEAR);
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700237 clk_disable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700238
239 return 0;
240}
241
242static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
243{
244 struct rtc_time *alm_tm = &alrm->time;
Ben Dooks9a654512006-08-27 01:23:22 -0700245 void __iomem *base = s3c_rtc_base;
Ben Dooks1add6782006-07-01 04:36:26 -0700246 unsigned int alm_en;
247
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700248 clk_enable(rtc_clk);
Ben Dooks9a654512006-08-27 01:23:22 -0700249 alm_tm->tm_sec = readb(base + S3C2410_ALMSEC);
250 alm_tm->tm_min = readb(base + S3C2410_ALMMIN);
251 alm_tm->tm_hour = readb(base + S3C2410_ALMHOUR);
252 alm_tm->tm_mon = readb(base + S3C2410_ALMMON);
253 alm_tm->tm_mday = readb(base + S3C2410_ALMDATE);
254 alm_tm->tm_year = readb(base + S3C2410_ALMYEAR);
Ben Dooks1add6782006-07-01 04:36:26 -0700255
Ben Dooks9a654512006-08-27 01:23:22 -0700256 alm_en = readb(base + S3C2410_RTCALM);
Ben Dooks1add6782006-07-01 04:36:26 -0700257
David Brownella2db8df2006-12-13 00:35:08 -0800258 alrm->enabled = (alm_en & S3C2410_RTCALM_ALMEN) ? 1 : 0;
259
Jingoo Hand4a48c22013-02-21 16:45:06 -0800260 dev_dbg(dev, "read alarm %d, %04d.%02d.%02d %02d:%02d:%02d\n",
Ben Dooks1add6782006-07-01 04:36:26 -0700261 alm_en,
Kukjin Kim30ffc402010-10-27 15:33:09 -0700262 1900 + alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
Ben Dooks1add6782006-07-01 04:36:26 -0700263 alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec);
264
265
266 /* decode the alarm enable field */
267
268 if (alm_en & S3C2410_RTCALM_SECEN)
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700269 alm_tm->tm_sec = bcd2bin(alm_tm->tm_sec);
Ben Dooks1add6782006-07-01 04:36:26 -0700270 else
Changhwan Youndd061d12010-10-27 15:33:08 -0700271 alm_tm->tm_sec = -1;
Ben Dooks1add6782006-07-01 04:36:26 -0700272
273 if (alm_en & S3C2410_RTCALM_MINEN)
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700274 alm_tm->tm_min = bcd2bin(alm_tm->tm_min);
Ben Dooks1add6782006-07-01 04:36:26 -0700275 else
Changhwan Youndd061d12010-10-27 15:33:08 -0700276 alm_tm->tm_min = -1;
Ben Dooks1add6782006-07-01 04:36:26 -0700277
278 if (alm_en & S3C2410_RTCALM_HOUREN)
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700279 alm_tm->tm_hour = bcd2bin(alm_tm->tm_hour);
Ben Dooks1add6782006-07-01 04:36:26 -0700280 else
Changhwan Youndd061d12010-10-27 15:33:08 -0700281 alm_tm->tm_hour = -1;
Ben Dooks1add6782006-07-01 04:36:26 -0700282
283 if (alm_en & S3C2410_RTCALM_DAYEN)
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700284 alm_tm->tm_mday = bcd2bin(alm_tm->tm_mday);
Ben Dooks1add6782006-07-01 04:36:26 -0700285 else
Changhwan Youndd061d12010-10-27 15:33:08 -0700286 alm_tm->tm_mday = -1;
Ben Dooks1add6782006-07-01 04:36:26 -0700287
288 if (alm_en & S3C2410_RTCALM_MONEN) {
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700289 alm_tm->tm_mon = bcd2bin(alm_tm->tm_mon);
Ben Dooks1add6782006-07-01 04:36:26 -0700290 alm_tm->tm_mon -= 1;
291 } else {
Changhwan Youndd061d12010-10-27 15:33:08 -0700292 alm_tm->tm_mon = -1;
Ben Dooks1add6782006-07-01 04:36:26 -0700293 }
294
295 if (alm_en & S3C2410_RTCALM_YEAREN)
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700296 alm_tm->tm_year = bcd2bin(alm_tm->tm_year);
Ben Dooks1add6782006-07-01 04:36:26 -0700297 else
Changhwan Youndd061d12010-10-27 15:33:08 -0700298 alm_tm->tm_year = -1;
Ben Dooks1add6782006-07-01 04:36:26 -0700299
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700300 clk_disable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700301 return 0;
302}
303
304static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
305{
306 struct rtc_time *tm = &alrm->time;
Ben Dooks9a654512006-08-27 01:23:22 -0700307 void __iomem *base = s3c_rtc_base;
Ben Dooks1add6782006-07-01 04:36:26 -0700308 unsigned int alrm_en;
309
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700310 clk_enable(rtc_clk);
Jingoo Hand4a48c22013-02-21 16:45:06 -0800311 dev_dbg(dev, "s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
Ben Dooks1add6782006-07-01 04:36:26 -0700312 alrm->enabled,
MyungJoo Ham4e8896c2011-08-25 15:59:22 -0700313 1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,
Kukjin Kim30ffc402010-10-27 15:33:09 -0700314 tm->tm_hour, tm->tm_min, tm->tm_sec);
Ben Dooks1add6782006-07-01 04:36:26 -0700315
Ben Dooks9a654512006-08-27 01:23:22 -0700316 alrm_en = readb(base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
317 writeb(0x00, base + S3C2410_RTCALM);
Ben Dooks1add6782006-07-01 04:36:26 -0700318
319 if (tm->tm_sec < 60 && tm->tm_sec >= 0) {
320 alrm_en |= S3C2410_RTCALM_SECEN;
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700321 writeb(bin2bcd(tm->tm_sec), base + S3C2410_ALMSEC);
Ben Dooks1add6782006-07-01 04:36:26 -0700322 }
323
324 if (tm->tm_min < 60 && tm->tm_min >= 0) {
325 alrm_en |= S3C2410_RTCALM_MINEN;
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700326 writeb(bin2bcd(tm->tm_min), base + S3C2410_ALMMIN);
Ben Dooks1add6782006-07-01 04:36:26 -0700327 }
328
329 if (tm->tm_hour < 24 && tm->tm_hour >= 0) {
330 alrm_en |= S3C2410_RTCALM_HOUREN;
Adrian Bunkfe20ba72008-10-18 20:28:41 -0700331 writeb(bin2bcd(tm->tm_hour), base + S3C2410_ALMHOUR);
Ben Dooks1add6782006-07-01 04:36:26 -0700332 }
333
Jingoo Hand4a48c22013-02-21 16:45:06 -0800334 dev_dbg(dev, "setting S3C2410_RTCALM to %08x\n", alrm_en);
Ben Dooks1add6782006-07-01 04:36:26 -0700335
Ben Dooks9a654512006-08-27 01:23:22 -0700336 writeb(alrm_en, base + S3C2410_RTCALM);
Ben Dooks1add6782006-07-01 04:36:26 -0700337
Axel Lin2ec38a02011-03-04 17:36:19 -0800338 s3c_rtc_setaie(dev, alrm->enabled);
Ben Dooks1add6782006-07-01 04:36:26 -0700339
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700340 clk_disable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700341 return 0;
342}
343
Ben Dooks1add6782006-07-01 04:36:26 -0700344static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)
345{
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700346 unsigned int ticnt;
Ben Dooks1add6782006-07-01 04:36:26 -0700347
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700348 clk_enable(rtc_clk);
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700349 if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
Changhwan Younf61ae672010-10-27 15:33:06 -0700350 ticnt = readw(s3c_rtc_base + S3C2410_RTCCON);
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700351 ticnt &= S3C64XX_RTCCON_TICEN;
352 } else {
353 ticnt = readb(s3c_rtc_base + S3C2410_TICNT);
354 ticnt &= S3C2410_TICNT_ENABLE;
355 }
356
357 seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no");
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700358 clk_disable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700359 return 0;
360}
361
David Brownellff8371a2006-09-30 23:28:17 -0700362static const struct rtc_class_ops s3c_rtcops = {
Ben Dooks1add6782006-07-01 04:36:26 -0700363 .read_time = s3c_rtc_gettime,
364 .set_time = s3c_rtc_settime,
365 .read_alarm = s3c_rtc_getalarm,
366 .set_alarm = s3c_rtc_setalarm,
Changhwan Youne6eb5242010-10-27 15:33:09 -0700367 .proc = s3c_rtc_proc,
368 .alarm_irq_enable = s3c_rtc_setaie,
Ben Dooks1add6782006-07-01 04:36:26 -0700369};
370
371static void s3c_rtc_enable(struct platform_device *pdev, int en)
372{
Ben Dooks9a654512006-08-27 01:23:22 -0700373 void __iomem *base = s3c_rtc_base;
Ben Dooks1add6782006-07-01 04:36:26 -0700374 unsigned int tmp;
375
376 if (s3c_rtc_base == NULL)
377 return;
378
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700379 clk_enable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700380 if (!en) {
Changhwan Younf61ae672010-10-27 15:33:06 -0700381 tmp = readw(base + S3C2410_RTCCON);
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700382 if (s3c_rtc_cpu_type == TYPE_S3C64XX)
383 tmp &= ~S3C64XX_RTCCON_TICEN;
384 tmp &= ~S3C2410_RTCCON_RTCEN;
Changhwan Younf61ae672010-10-27 15:33:06 -0700385 writew(tmp, base + S3C2410_RTCCON);
Ben Dooks1add6782006-07-01 04:36:26 -0700386
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900387 if (s3c_rtc_cpu_type != TYPE_S3C64XX) {
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700388 tmp = readb(base + S3C2410_TICNT);
389 tmp &= ~S3C2410_TICNT_ENABLE;
390 writeb(tmp, base + S3C2410_TICNT);
391 }
Ben Dooks1add6782006-07-01 04:36:26 -0700392 } else {
393 /* re-enable the device, and check it is ok */
394
Changhwan Younf61ae672010-10-27 15:33:06 -0700395 if ((readw(base+S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0) {
Ben Dooks1add6782006-07-01 04:36:26 -0700396 dev_info(&pdev->dev, "rtc disabled, re-enabling\n");
397
Changhwan Younf61ae672010-10-27 15:33:06 -0700398 tmp = readw(base + S3C2410_RTCCON);
399 writew(tmp | S3C2410_RTCCON_RTCEN,
400 base + S3C2410_RTCCON);
Ben Dooks1add6782006-07-01 04:36:26 -0700401 }
402
Changhwan Younf61ae672010-10-27 15:33:06 -0700403 if ((readw(base + S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)) {
Ben Dooks1add6782006-07-01 04:36:26 -0700404 dev_info(&pdev->dev, "removing RTCCON_CNTSEL\n");
405
Changhwan Younf61ae672010-10-27 15:33:06 -0700406 tmp = readw(base + S3C2410_RTCCON);
407 writew(tmp & ~S3C2410_RTCCON_CNTSEL,
408 base + S3C2410_RTCCON);
Ben Dooks1add6782006-07-01 04:36:26 -0700409 }
410
Changhwan Younf61ae672010-10-27 15:33:06 -0700411 if ((readw(base + S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)) {
Ben Dooks1add6782006-07-01 04:36:26 -0700412 dev_info(&pdev->dev, "removing RTCCON_CLKRST\n");
413
Changhwan Younf61ae672010-10-27 15:33:06 -0700414 tmp = readw(base + S3C2410_RTCCON);
415 writew(tmp & ~S3C2410_RTCCON_CLKRST,
416 base + S3C2410_RTCCON);
Ben Dooks1add6782006-07-01 04:36:26 -0700417 }
418 }
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700419 clk_disable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700420}
421
Greg Kroah-Hartman5a167f42012-12-21 13:09:38 -0800422static int s3c_rtc_remove(struct platform_device *dev)
Ben Dooks1add6782006-07-01 04:36:26 -0700423{
Axel Lin2ec38a02011-03-04 17:36:19 -0800424 s3c_rtc_setaie(&dev->dev, 0);
Ben Dooks1add6782006-07-01 04:36:26 -0700425
Thomas Abraham1a3224f2013-04-29 16:20:24 -0700426 clk_unprepare(rtc_clk);
Atul Dahiyae48add82010-07-20 12:19:14 +0530427 rtc_clk = NULL;
428
Ben Dooks1add6782006-07-01 04:36:26 -0700429 return 0;
430}
431
Heiko Stuebnerd2524ca2011-12-24 10:52:14 +0900432static const struct of_device_id s3c_rtc_dt_match[];
433
434static inline int s3c_rtc_get_driver_data(struct platform_device *pdev)
435{
436#ifdef CONFIG_OF
Tushar Beherac3cba922012-04-12 12:49:14 -0700437 struct s3c_rtc_drv_data *data;
Heiko Stuebnerd2524ca2011-12-24 10:52:14 +0900438 if (pdev->dev.of_node) {
439 const struct of_device_id *match;
440 match = of_match_node(s3c_rtc_dt_match, pdev->dev.of_node);
Tushar Beherac3cba922012-04-12 12:49:14 -0700441 data = (struct s3c_rtc_drv_data *) match->data;
442 return data->cpu_type;
Heiko Stuebnerd2524ca2011-12-24 10:52:14 +0900443 }
444#endif
445 return platform_get_device_id(pdev)->driver_data;
446}
447
Greg Kroah-Hartman5a167f42012-12-21 13:09:38 -0800448static int s3c_rtc_probe(struct platform_device *pdev)
Ben Dooks1add6782006-07-01 04:36:26 -0700449{
450 struct rtc_device *rtc;
Changhwan Youne1df9622010-10-27 15:33:10 -0700451 struct rtc_time rtc_tm;
Ben Dooks1add6782006-07-01 04:36:26 -0700452 struct resource *res;
453 int ret;
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900454 int tmp;
Ben Dooks1add6782006-07-01 04:36:26 -0700455
Jingoo Hand4a48c22013-02-21 16:45:06 -0800456 dev_dbg(&pdev->dev, "%s: probe=%p\n", __func__, pdev);
Ben Dooks1add6782006-07-01 04:36:26 -0700457
458 /* find the IRQs */
459
460 s3c_rtc_tickno = platform_get_irq(pdev, 1);
461 if (s3c_rtc_tickno < 0) {
462 dev_err(&pdev->dev, "no irq for rtc tick\n");
Sachin Kamat1ee8c0c2012-10-04 17:14:14 -0700463 return s3c_rtc_tickno;
Ben Dooks1add6782006-07-01 04:36:26 -0700464 }
465
466 s3c_rtc_alarmno = platform_get_irq(pdev, 0);
467 if (s3c_rtc_alarmno < 0) {
468 dev_err(&pdev->dev, "no irq for alarm\n");
Sachin Kamat1ee8c0c2012-10-04 17:14:14 -0700469 return s3c_rtc_alarmno;
Ben Dooks1add6782006-07-01 04:36:26 -0700470 }
471
Jingoo Hand4a48c22013-02-21 16:45:06 -0800472 dev_dbg(&pdev->dev, "s3c2410_rtc: tick irq %d, alarm irq %d\n",
Ben Dooks1add6782006-07-01 04:36:26 -0700473 s3c_rtc_tickno, s3c_rtc_alarmno);
474
475 /* get the memory region */
476
477 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
Thierry Reding8cbce1e2013-01-21 11:09:17 +0100478 s3c_rtc_base = devm_ioremap_resource(&pdev->dev, res);
479 if (IS_ERR(s3c_rtc_base))
480 return PTR_ERR(s3c_rtc_base);
Ben Dooks1add6782006-07-01 04:36:26 -0700481
Tushar Behera1b997322012-12-17 16:02:48 -0800482 rtc_clk = devm_clk_get(&pdev->dev, "rtc");
Atul Dahiyae48add82010-07-20 12:19:14 +0530483 if (IS_ERR(rtc_clk)) {
484 dev_err(&pdev->dev, "failed to find rtc clock source\n");
485 ret = PTR_ERR(rtc_clk);
486 rtc_clk = NULL;
Tushar Behera1b997322012-12-17 16:02:48 -0800487 return ret;
Atul Dahiyae48add82010-07-20 12:19:14 +0530488 }
489
Thomas Abraham1a3224f2013-04-29 16:20:24 -0700490 clk_prepare_enable(rtc_clk);
Atul Dahiyae48add82010-07-20 12:19:14 +0530491
Ben Dooks1add6782006-07-01 04:36:26 -0700492 /* check to see if everything is setup correctly */
493
494 s3c_rtc_enable(pdev, 1);
495
Jingoo Hand4a48c22013-02-21 16:45:06 -0800496 dev_dbg(&pdev->dev, "s3c2410_rtc: RTCCON=%02x\n",
Changhwan Younf61ae672010-10-27 15:33:06 -0700497 readw(s3c_rtc_base + S3C2410_RTCCON));
Ben Dooks1add6782006-07-01 04:36:26 -0700498
Yauhen Kharuzhy51b76162008-10-29 14:01:16 -0700499 device_init_wakeup(&pdev->dev, 1);
500
Ben Dooks1add6782006-07-01 04:36:26 -0700501 /* register RTC and exit */
502
Jingoo Han4c99c132013-04-29 16:19:11 -0700503 rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops,
Ben Dooks1add6782006-07-01 04:36:26 -0700504 THIS_MODULE);
505
506 if (IS_ERR(rtc)) {
507 dev_err(&pdev->dev, "cannot attach rtc\n");
508 ret = PTR_ERR(rtc);
509 goto err_nortc;
510 }
511
Heiko Stuebnerd2524ca2011-12-24 10:52:14 +0900512 s3c_rtc_cpu_type = s3c_rtc_get_driver_data(pdev);
Maurus Cuelenaereeaa6e4d2010-06-04 14:14:46 -0700513
Taekgyun Ko051fe542010-07-29 13:00:42 +0900514 /* Check RTC Time */
515
Changhwan Youne1df9622010-10-27 15:33:10 -0700516 s3c_rtc_gettime(NULL, &rtc_tm);
Taekgyun Ko051fe542010-07-29 13:00:42 +0900517
Changhwan Youne1df9622010-10-27 15:33:10 -0700518 if (rtc_valid_tm(&rtc_tm)) {
519 rtc_tm.tm_year = 100;
520 rtc_tm.tm_mon = 0;
521 rtc_tm.tm_mday = 1;
522 rtc_tm.tm_hour = 0;
523 rtc_tm.tm_min = 0;
524 rtc_tm.tm_sec = 0;
525
526 s3c_rtc_settime(NULL, &rtc_tm);
527
528 dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
Taekgyun Ko051fe542010-07-29 13:00:42 +0900529 }
530
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900531 if (s3c_rtc_cpu_type != TYPE_S3C2410)
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700532 rtc->max_user_freq = 32768;
533 else
534 rtc->max_user_freq = 128;
535
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900536 if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) {
537 tmp = readw(s3c_rtc_base + S3C2410_RTCCON);
538 tmp |= S3C2443_RTCCON_TICSEL;
539 writew(tmp, s3c_rtc_base + S3C2410_RTCCON);
540 }
541
Ben Dooks1add6782006-07-01 04:36:26 -0700542 platform_set_drvdata(pdev, rtc);
Maurus Cuelenaeree893de52010-06-04 14:14:44 -0700543
544 s3c_rtc_setfreq(&pdev->dev, 1);
545
Tushar Behera1b997322012-12-17 16:02:48 -0800546 ret = devm_request_irq(&pdev->dev, s3c_rtc_alarmno, s3c_rtc_alarmirq,
Yong Zhang2f6e5f92012-03-23 15:02:34 -0700547 0, "s3c2410-rtc alarm", rtc);
MyungJoo Ham62d17602011-08-25 15:59:24 -0700548 if (ret) {
549 dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_alarmno, ret);
Jingoo Hanfb9b5252013-07-03 15:06:34 -0700550 goto err_nortc;
MyungJoo Ham62d17602011-08-25 15:59:24 -0700551 }
552
Tushar Behera1b997322012-12-17 16:02:48 -0800553 ret = devm_request_irq(&pdev->dev, s3c_rtc_tickno, s3c_rtc_tickirq,
Yong Zhang2f6e5f92012-03-23 15:02:34 -0700554 0, "s3c2410-rtc tick", rtc);
MyungJoo Ham62d17602011-08-25 15:59:24 -0700555 if (ret) {
556 dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_tickno, ret);
Jingoo Hanfb9b5252013-07-03 15:06:34 -0700557 goto err_nortc;
MyungJoo Ham62d17602011-08-25 15:59:24 -0700558 }
559
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700560 clk_disable(rtc_clk);
561
Ben Dooks1add6782006-07-01 04:36:26 -0700562 return 0;
563
564 err_nortc:
565 s3c_rtc_enable(pdev, 0);
Thomas Abraham1a3224f2013-04-29 16:20:24 -0700566 clk_disable_unprepare(rtc_clk);
Atul Dahiyae48add82010-07-20 12:19:14 +0530567
Ben Dooks1add6782006-07-01 04:36:26 -0700568 return ret;
569}
570
Jingoo Han32e445a2013-04-29 16:19:27 -0700571#ifdef CONFIG_PM_SLEEP
Ben Dooks1add6782006-07-01 04:36:26 -0700572/* RTC Power management control */
573
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700574static int ticnt_save, ticnt_en_save;
Jingoo Han32e445a2013-04-29 16:19:27 -0700575static bool wake_en;
Ben Dooks1add6782006-07-01 04:36:26 -0700576
Jingoo Han32e445a2013-04-29 16:19:27 -0700577static int s3c_rtc_suspend(struct device *dev)
Ben Dooks1add6782006-07-01 04:36:26 -0700578{
Jingoo Han32e445a2013-04-29 16:19:27 -0700579 struct platform_device *pdev = to_platform_device(dev);
580
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700581 clk_enable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700582 /* save TICNT for anyone using periodic interrupts */
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700583 if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
Changhwan Younf61ae672010-10-27 15:33:06 -0700584 ticnt_en_save = readw(s3c_rtc_base + S3C2410_RTCCON);
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700585 ticnt_en_save &= S3C64XX_RTCCON_TICEN;
Vikas Sajjan40d2d962014-03-03 15:38:31 -0800586 ticnt_save = readl(s3c_rtc_base + S3C2410_TICNT);
587 } else {
588 ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700589 }
Ben Dooks1add6782006-07-01 04:36:26 -0700590 s3c_rtc_enable(pdev, 0);
Vladimir Zapolskiyf501ed52010-09-22 13:05:13 -0700591
Jingoo Han32e445a2013-04-29 16:19:27 -0700592 if (device_may_wakeup(dev) && !wake_en) {
Ben Dooks52cd4e52011-05-11 15:13:28 -0700593 if (enable_irq_wake(s3c_rtc_alarmno) == 0)
594 wake_en = true;
595 else
Jingoo Han32e445a2013-04-29 16:19:27 -0700596 dev_err(dev, "enable_irq_wake failed\n");
Ben Dooks52cd4e52011-05-11 15:13:28 -0700597 }
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700598 clk_disable(rtc_clk);
Vladimir Zapolskiyf501ed52010-09-22 13:05:13 -0700599
Ben Dooks1add6782006-07-01 04:36:26 -0700600 return 0;
601}
602
Jingoo Han32e445a2013-04-29 16:19:27 -0700603static int s3c_rtc_resume(struct device *dev)
Ben Dooks1add6782006-07-01 04:36:26 -0700604{
Jingoo Han32e445a2013-04-29 16:19:27 -0700605 struct platform_device *pdev = to_platform_device(dev);
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700606 unsigned int tmp;
607
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700608 clk_enable(rtc_clk);
Ben Dooks1add6782006-07-01 04:36:26 -0700609 s3c_rtc_enable(pdev, 1);
Vikas Sajjan40d2d962014-03-03 15:38:31 -0800610 if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
611 writel(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
612 if (ticnt_en_save) {
613 tmp = readw(s3c_rtc_base + S3C2410_RTCCON);
614 writew(tmp | ticnt_en_save,
615 s3c_rtc_base + S3C2410_RTCCON);
616 }
617 } else {
618 writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700619 }
Vladimir Zapolskiyf501ed52010-09-22 13:05:13 -0700620
Jingoo Han32e445a2013-04-29 16:19:27 -0700621 if (device_may_wakeup(dev) && wake_en) {
Vladimir Zapolskiyf501ed52010-09-22 13:05:13 -0700622 disable_irq_wake(s3c_rtc_alarmno);
Ben Dooks52cd4e52011-05-11 15:13:28 -0700623 wake_en = false;
624 }
Donggeun Kimcefe4fb2011-07-25 17:13:32 -0700625 clk_disable(rtc_clk);
Vladimir Zapolskiyf501ed52010-09-22 13:05:13 -0700626
Ben Dooks1add6782006-07-01 04:36:26 -0700627 return 0;
628}
Ben Dooks1add6782006-07-01 04:36:26 -0700629#endif
630
Jingoo Han32e445a2013-04-29 16:19:27 -0700631static SIMPLE_DEV_PM_OPS(s3c_rtc_pm_ops, s3c_rtc_suspend, s3c_rtc_resume);
632
Sachin Kamatecb41a72012-05-29 15:07:40 -0700633#ifdef CONFIG_OF
Tushar Beherac3cba922012-04-12 12:49:14 -0700634static struct s3c_rtc_drv_data s3c_rtc_drv_data_array[] = {
635 [TYPE_S3C2410] = { TYPE_S3C2410 },
636 [TYPE_S3C2416] = { TYPE_S3C2416 },
637 [TYPE_S3C2443] = { TYPE_S3C2443 },
638 [TYPE_S3C64XX] = { TYPE_S3C64XX },
639};
640
Thomas Abraham39ce4082011-10-24 14:49:04 +0200641static const struct of_device_id s3c_rtc_dt_match[] = {
Heiko Stuebnerd2524ca2011-12-24 10:52:14 +0900642 {
Tushar Beheracd1e6f92012-04-12 12:49:14 -0700643 .compatible = "samsung,s3c2410-rtc",
Tushar Beherac3cba922012-04-12 12:49:14 -0700644 .data = &s3c_rtc_drv_data_array[TYPE_S3C2410],
Heiko Stuebnerd2524ca2011-12-24 10:52:14 +0900645 }, {
Tushar Beheracd1e6f92012-04-12 12:49:14 -0700646 .compatible = "samsung,s3c2416-rtc",
Tushar Beherac3cba922012-04-12 12:49:14 -0700647 .data = &s3c_rtc_drv_data_array[TYPE_S3C2416],
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900648 }, {
Tushar Beheracd1e6f92012-04-12 12:49:14 -0700649 .compatible = "samsung,s3c2443-rtc",
Tushar Beherac3cba922012-04-12 12:49:14 -0700650 .data = &s3c_rtc_drv_data_array[TYPE_S3C2443],
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900651 }, {
Tushar Beheracd1e6f92012-04-12 12:49:14 -0700652 .compatible = "samsung,s3c6410-rtc",
Tushar Beherac3cba922012-04-12 12:49:14 -0700653 .data = &s3c_rtc_drv_data_array[TYPE_S3C64XX],
Heiko Stuebnerd2524ca2011-12-24 10:52:14 +0900654 },
Thomas Abraham39ce4082011-10-24 14:49:04 +0200655 {},
656};
657MODULE_DEVICE_TABLE(of, s3c_rtc_dt_match);
Thomas Abraham39ce4082011-10-24 14:49:04 +0200658#endif
659
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700660static struct platform_device_id s3c_rtc_driver_ids[] = {
661 {
662 .name = "s3c2410-rtc",
663 .driver_data = TYPE_S3C2410,
664 }, {
Heiko Stuebner25c1a242011-12-24 10:52:19 +0900665 .name = "s3c2416-rtc",
666 .driver_data = TYPE_S3C2416,
667 }, {
668 .name = "s3c2443-rtc",
669 .driver_data = TYPE_S3C2443,
670 }, {
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700671 .name = "s3c64xx-rtc",
672 .driver_data = TYPE_S3C64XX,
673 },
674 { }
675};
676
677MODULE_DEVICE_TABLE(platform, s3c_rtc_driver_ids);
678
679static struct platform_driver s3c_rtc_driver = {
Ben Dooks1add6782006-07-01 04:36:26 -0700680 .probe = s3c_rtc_probe,
Greg Kroah-Hartman5a167f42012-12-21 13:09:38 -0800681 .remove = s3c_rtc_remove,
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700682 .id_table = s3c_rtc_driver_ids,
Ben Dooks1add6782006-07-01 04:36:26 -0700683 .driver = {
Maurus Cuelenaere9f4123b2010-05-24 14:33:43 -0700684 .name = "s3c-rtc",
Ben Dooks1add6782006-07-01 04:36:26 -0700685 .owner = THIS_MODULE,
Jingoo Han32e445a2013-04-29 16:19:27 -0700686 .pm = &s3c_rtc_pm_ops,
Sachin Kamat04a373f2012-12-17 16:02:52 -0800687 .of_match_table = of_match_ptr(s3c_rtc_dt_match),
Ben Dooks1add6782006-07-01 04:36:26 -0700688 },
689};
690
Axel Lin0c4eae62012-01-10 15:10:48 -0800691module_platform_driver(s3c_rtc_driver);
Ben Dooks1add6782006-07-01 04:36:26 -0700692
693MODULE_DESCRIPTION("Samsung S3C RTC Driver");
694MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
695MODULE_LICENSE("GPL");
Kay Sieversad28a072008-04-10 21:29:25 -0700696MODULE_ALIAS("platform:s3c2410-rtc");