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1// SPDX-License-Identifier: GPL-2.0-or-later
2/* NXP PCF50633 RTC Driver
3 *
4 * (C) 2006-2008 by Openmoko, Inc.
5 * Author: Balaji Rao <balajirrao@openmoko.org>
6 * All rights reserved.
7 *
8 * Broken down from monstrous PCF50633 driver mainly by
9 * Harald Welte, Andy Green and Werner Almesberger
10 */
11
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/device.h>
16#include <linux/slab.h>
17#include <linux/platform_device.h>
18#include <linux/rtc.h>
19#include <linux/bcd.h>
20#include <linux/err.h>
21
22#include <linux/mfd/pcf50633/core.h>
23
24#define PCF50633_REG_RTCSC 0x59 /* Second */
25#define PCF50633_REG_RTCMN 0x5a /* Minute */
26#define PCF50633_REG_RTCHR 0x5b /* Hour */
27#define PCF50633_REG_RTCWD 0x5c /* Weekday */
28#define PCF50633_REG_RTCDT 0x5d /* Day */
29#define PCF50633_REG_RTCMT 0x5e /* Month */
30#define PCF50633_REG_RTCYR 0x5f /* Year */
31#define PCF50633_REG_RTCSCA 0x60 /* Alarm Second */
32#define PCF50633_REG_RTCMNA 0x61 /* Alarm Minute */
33#define PCF50633_REG_RTCHRA 0x62 /* Alarm Hour */
34#define PCF50633_REG_RTCWDA 0x63 /* Alarm Weekday */
35#define PCF50633_REG_RTCDTA 0x64 /* Alarm Day */
36#define PCF50633_REG_RTCMTA 0x65 /* Alarm Month */
37#define PCF50633_REG_RTCYRA 0x66 /* Alarm Year */
38
39enum pcf50633_time_indexes {
40 PCF50633_TI_SEC,
41 PCF50633_TI_MIN,
42 PCF50633_TI_HOUR,
43 PCF50633_TI_WKDAY,
44 PCF50633_TI_DAY,
45 PCF50633_TI_MONTH,
46 PCF50633_TI_YEAR,
47 PCF50633_TI_EXTENT /* always last */
48};
49
50struct pcf50633_time {
51 u_int8_t time[PCF50633_TI_EXTENT];
52};
53
54struct pcf50633_rtc {
55 int alarm_enabled;
56 int alarm_pending;
57
58 struct pcf50633 *pcf;
59 struct rtc_device *rtc_dev;
60};
61
62static void pcf2rtc_time(struct rtc_time *rtc, struct pcf50633_time *pcf)
63{
64 rtc->tm_sec = bcd2bin(pcf->time[PCF50633_TI_SEC]);
65 rtc->tm_min = bcd2bin(pcf->time[PCF50633_TI_MIN]);
66 rtc->tm_hour = bcd2bin(pcf->time[PCF50633_TI_HOUR]);
67 rtc->tm_wday = bcd2bin(pcf->time[PCF50633_TI_WKDAY]);
68 rtc->tm_mday = bcd2bin(pcf->time[PCF50633_TI_DAY]);
69 rtc->tm_mon = bcd2bin(pcf->time[PCF50633_TI_MONTH]) - 1;
70 rtc->tm_year = bcd2bin(pcf->time[PCF50633_TI_YEAR]) + 100;
71}
72
73static void rtc2pcf_time(struct pcf50633_time *pcf, struct rtc_time *rtc)
74{
75 pcf->time[PCF50633_TI_SEC] = bin2bcd(rtc->tm_sec);
76 pcf->time[PCF50633_TI_MIN] = bin2bcd(rtc->tm_min);
77 pcf->time[PCF50633_TI_HOUR] = bin2bcd(rtc->tm_hour);
78 pcf->time[PCF50633_TI_WKDAY] = bin2bcd(rtc->tm_wday);
79 pcf->time[PCF50633_TI_DAY] = bin2bcd(rtc->tm_mday);
80 pcf->time[PCF50633_TI_MONTH] = bin2bcd(rtc->tm_mon + 1);
81 pcf->time[PCF50633_TI_YEAR] = bin2bcd(rtc->tm_year % 100);
82}
83
84static int
85pcf50633_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
86{
87 struct pcf50633_rtc *rtc = dev_get_drvdata(dev);
88 int err;
89
90 if (enabled)
91 err = pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
92 else
93 err = pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
94
95 if (err < 0)
96 return err;
97
98 rtc->alarm_enabled = enabled;
99
100 return 0;
101}
102
103static int pcf50633_rtc_read_time(struct device *dev, struct rtc_time *tm)
104{
105 struct pcf50633_rtc *rtc;
106 struct pcf50633_time pcf_tm;
107 int ret;
108
109 rtc = dev_get_drvdata(dev);
110
111 ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSC,
112 PCF50633_TI_EXTENT,
113 &pcf_tm.time[0]);
114 if (ret != PCF50633_TI_EXTENT) {
115 dev_err(dev, "Failed to read time\n");
116 return -EIO;
117 }
118
119 dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
120 pcf_tm.time[PCF50633_TI_DAY],
121 pcf_tm.time[PCF50633_TI_MONTH],
122 pcf_tm.time[PCF50633_TI_YEAR],
123 pcf_tm.time[PCF50633_TI_HOUR],
124 pcf_tm.time[PCF50633_TI_MIN],
125 pcf_tm.time[PCF50633_TI_SEC]);
126
127 pcf2rtc_time(tm, &pcf_tm);
128
129 dev_dbg(dev, "RTC_TIME: %ptRr\n", tm);
130
131 return 0;
132}
133
134static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm)
135{
136 struct pcf50633_rtc *rtc;
137 struct pcf50633_time pcf_tm;
138 int alarm_masked, ret = 0;
139
140 rtc = dev_get_drvdata(dev);
141
142 dev_dbg(dev, "RTC_TIME: %ptRr\n", tm);
143
144 rtc2pcf_time(&pcf_tm, tm);
145
146 dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
147 pcf_tm.time[PCF50633_TI_DAY],
148 pcf_tm.time[PCF50633_TI_MONTH],
149 pcf_tm.time[PCF50633_TI_YEAR],
150 pcf_tm.time[PCF50633_TI_HOUR],
151 pcf_tm.time[PCF50633_TI_MIN],
152 pcf_tm.time[PCF50633_TI_SEC]);
153
154
155 alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM);
156
157 if (!alarm_masked)
158 pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
159
160 /* Returns 0 on success */
161 ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSC,
162 PCF50633_TI_EXTENT,
163 &pcf_tm.time[0]);
164
165 if (!alarm_masked)
166 pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
167
168 return ret;
169}
170
171static int pcf50633_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
172{
173 struct pcf50633_rtc *rtc;
174 struct pcf50633_time pcf_tm;
175 int ret = 0;
176
177 rtc = dev_get_drvdata(dev);
178
179 alrm->enabled = rtc->alarm_enabled;
180 alrm->pending = rtc->alarm_pending;
181
182 ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSCA,
183 PCF50633_TI_EXTENT, &pcf_tm.time[0]);
184 if (ret != PCF50633_TI_EXTENT) {
185 dev_err(dev, "Failed to read time\n");
186 return -EIO;
187 }
188
189 pcf2rtc_time(&alrm->time, &pcf_tm);
190
191 return rtc_valid_tm(&alrm->time);
192}
193
194static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
195{
196 struct pcf50633_rtc *rtc;
197 struct pcf50633_time pcf_tm;
198 int alarm_masked, ret = 0;
199
200 rtc = dev_get_drvdata(dev);
201
202 rtc2pcf_time(&pcf_tm, &alrm->time);
203
204 /* do like mktime does and ignore tm_wday */
205 pcf_tm.time[PCF50633_TI_WKDAY] = 7;
206
207 alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM);
208
209 /* disable alarm interrupt */
210 if (!alarm_masked)
211 pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
212
213 /* Returns 0 on success */
214 ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSCA,
215 PCF50633_TI_EXTENT, &pcf_tm.time[0]);
216 if (!alrm->enabled)
217 rtc->alarm_pending = 0;
218
219 if (!alarm_masked || alrm->enabled)
220 pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
221 rtc->alarm_enabled = alrm->enabled;
222
223 return ret;
224}
225
226static const struct rtc_class_ops pcf50633_rtc_ops = {
227 .read_time = pcf50633_rtc_read_time,
228 .set_time = pcf50633_rtc_set_time,
229 .read_alarm = pcf50633_rtc_read_alarm,
230 .set_alarm = pcf50633_rtc_set_alarm,
231 .alarm_irq_enable = pcf50633_rtc_alarm_irq_enable,
232};
233
234static void pcf50633_rtc_irq(int irq, void *data)
235{
236 struct pcf50633_rtc *rtc = data;
237
238 rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF);
239 rtc->alarm_pending = 1;
240}
241
242static int pcf50633_rtc_probe(struct platform_device *pdev)
243{
244 struct pcf50633_rtc *rtc;
245
246 rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
247 if (!rtc)
248 return -ENOMEM;
249
250 rtc->pcf = dev_to_pcf50633(pdev->dev.parent);
251 platform_set_drvdata(pdev, rtc);
252 rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, "pcf50633-rtc",
253 &pcf50633_rtc_ops, THIS_MODULE);
254
255 if (IS_ERR(rtc->rtc_dev))
256 return PTR_ERR(rtc->rtc_dev);
257
258 pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_ALARM,
259 pcf50633_rtc_irq, rtc);
260 return 0;
261}
262
263static void pcf50633_rtc_remove(struct platform_device *pdev)
264{
265 struct pcf50633_rtc *rtc;
266
267 rtc = platform_get_drvdata(pdev);
268 pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_ALARM);
269}
270
271static struct platform_driver pcf50633_rtc_driver = {
272 .driver = {
273 .name = "pcf50633-rtc",
274 },
275 .probe = pcf50633_rtc_probe,
276 .remove_new = pcf50633_rtc_remove,
277};
278
279module_platform_driver(pcf50633_rtc_driver);
280
281MODULE_DESCRIPTION("PCF50633 RTC driver");
282MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
283MODULE_LICENSE("GPL");
284
1/* NXP PCF50633 RTC Driver
2 *
3 * (C) 2006-2008 by Openmoko, Inc.
4 * Author: Balaji Rao <balajirrao@openmoko.org>
5 * All rights reserved.
6 *
7 * Broken down from monstrous PCF50633 driver mainly by
8 * Harald Welte, Andy Green and Werner Almesberger
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16
17#include <linux/kernel.h>
18#include <linux/module.h>
19#include <linux/init.h>
20#include <linux/device.h>
21#include <linux/slab.h>
22#include <linux/platform_device.h>
23#include <linux/rtc.h>
24#include <linux/bcd.h>
25#include <linux/err.h>
26
27#include <linux/mfd/pcf50633/core.h>
28
29#define PCF50633_REG_RTCSC 0x59 /* Second */
30#define PCF50633_REG_RTCMN 0x5a /* Minute */
31#define PCF50633_REG_RTCHR 0x5b /* Hour */
32#define PCF50633_REG_RTCWD 0x5c /* Weekday */
33#define PCF50633_REG_RTCDT 0x5d /* Day */
34#define PCF50633_REG_RTCMT 0x5e /* Month */
35#define PCF50633_REG_RTCYR 0x5f /* Year */
36#define PCF50633_REG_RTCSCA 0x60 /* Alarm Second */
37#define PCF50633_REG_RTCMNA 0x61 /* Alarm Minute */
38#define PCF50633_REG_RTCHRA 0x62 /* Alarm Hour */
39#define PCF50633_REG_RTCWDA 0x63 /* Alarm Weekday */
40#define PCF50633_REG_RTCDTA 0x64 /* Alarm Day */
41#define PCF50633_REG_RTCMTA 0x65 /* Alarm Month */
42#define PCF50633_REG_RTCYRA 0x66 /* Alarm Year */
43
44enum pcf50633_time_indexes {
45 PCF50633_TI_SEC,
46 PCF50633_TI_MIN,
47 PCF50633_TI_HOUR,
48 PCF50633_TI_WKDAY,
49 PCF50633_TI_DAY,
50 PCF50633_TI_MONTH,
51 PCF50633_TI_YEAR,
52 PCF50633_TI_EXTENT /* always last */
53};
54
55struct pcf50633_time {
56 u_int8_t time[PCF50633_TI_EXTENT];
57};
58
59struct pcf50633_rtc {
60 int alarm_enabled;
61 int alarm_pending;
62
63 struct pcf50633 *pcf;
64 struct rtc_device *rtc_dev;
65};
66
67static void pcf2rtc_time(struct rtc_time *rtc, struct pcf50633_time *pcf)
68{
69 rtc->tm_sec = bcd2bin(pcf->time[PCF50633_TI_SEC]);
70 rtc->tm_min = bcd2bin(pcf->time[PCF50633_TI_MIN]);
71 rtc->tm_hour = bcd2bin(pcf->time[PCF50633_TI_HOUR]);
72 rtc->tm_wday = bcd2bin(pcf->time[PCF50633_TI_WKDAY]);
73 rtc->tm_mday = bcd2bin(pcf->time[PCF50633_TI_DAY]);
74 rtc->tm_mon = bcd2bin(pcf->time[PCF50633_TI_MONTH]) - 1;
75 rtc->tm_year = bcd2bin(pcf->time[PCF50633_TI_YEAR]) + 100;
76}
77
78static void rtc2pcf_time(struct pcf50633_time *pcf, struct rtc_time *rtc)
79{
80 pcf->time[PCF50633_TI_SEC] = bin2bcd(rtc->tm_sec);
81 pcf->time[PCF50633_TI_MIN] = bin2bcd(rtc->tm_min);
82 pcf->time[PCF50633_TI_HOUR] = bin2bcd(rtc->tm_hour);
83 pcf->time[PCF50633_TI_WKDAY] = bin2bcd(rtc->tm_wday);
84 pcf->time[PCF50633_TI_DAY] = bin2bcd(rtc->tm_mday);
85 pcf->time[PCF50633_TI_MONTH] = bin2bcd(rtc->tm_mon + 1);
86 pcf->time[PCF50633_TI_YEAR] = bin2bcd(rtc->tm_year % 100);
87}
88
89static int
90pcf50633_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
91{
92 struct pcf50633_rtc *rtc = dev_get_drvdata(dev);
93 int err;
94
95 if (enabled)
96 err = pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
97 else
98 err = pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
99
100 if (err < 0)
101 return err;
102
103 rtc->alarm_enabled = enabled;
104
105 return 0;
106}
107
108static int pcf50633_rtc_read_time(struct device *dev, struct rtc_time *tm)
109{
110 struct pcf50633_rtc *rtc;
111 struct pcf50633_time pcf_tm;
112 int ret;
113
114 rtc = dev_get_drvdata(dev);
115
116 ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSC,
117 PCF50633_TI_EXTENT,
118 &pcf_tm.time[0]);
119 if (ret != PCF50633_TI_EXTENT) {
120 dev_err(dev, "Failed to read time\n");
121 return -EIO;
122 }
123
124 dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
125 pcf_tm.time[PCF50633_TI_DAY],
126 pcf_tm.time[PCF50633_TI_MONTH],
127 pcf_tm.time[PCF50633_TI_YEAR],
128 pcf_tm.time[PCF50633_TI_HOUR],
129 pcf_tm.time[PCF50633_TI_MIN],
130 pcf_tm.time[PCF50633_TI_SEC]);
131
132 pcf2rtc_time(tm, &pcf_tm);
133
134 dev_dbg(dev, "RTC_TIME: %u.%u.%u %u:%u:%u\n",
135 tm->tm_mday, tm->tm_mon, tm->tm_year,
136 tm->tm_hour, tm->tm_min, tm->tm_sec);
137
138 return rtc_valid_tm(tm);
139}
140
141static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm)
142{
143 struct pcf50633_rtc *rtc;
144 struct pcf50633_time pcf_tm;
145 int alarm_masked, ret = 0;
146
147 rtc = dev_get_drvdata(dev);
148
149 dev_dbg(dev, "RTC_TIME: %u.%u.%u %u:%u:%u\n",
150 tm->tm_mday, tm->tm_mon, tm->tm_year,
151 tm->tm_hour, tm->tm_min, tm->tm_sec);
152
153 rtc2pcf_time(&pcf_tm, tm);
154
155 dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
156 pcf_tm.time[PCF50633_TI_DAY],
157 pcf_tm.time[PCF50633_TI_MONTH],
158 pcf_tm.time[PCF50633_TI_YEAR],
159 pcf_tm.time[PCF50633_TI_HOUR],
160 pcf_tm.time[PCF50633_TI_MIN],
161 pcf_tm.time[PCF50633_TI_SEC]);
162
163
164 alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM);
165
166 if (!alarm_masked)
167 pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
168
169 /* Returns 0 on success */
170 ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSC,
171 PCF50633_TI_EXTENT,
172 &pcf_tm.time[0]);
173
174 if (!alarm_masked)
175 pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
176
177 return ret;
178}
179
180static int pcf50633_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
181{
182 struct pcf50633_rtc *rtc;
183 struct pcf50633_time pcf_tm;
184 int ret = 0;
185
186 rtc = dev_get_drvdata(dev);
187
188 alrm->enabled = rtc->alarm_enabled;
189 alrm->pending = rtc->alarm_pending;
190
191 ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSCA,
192 PCF50633_TI_EXTENT, &pcf_tm.time[0]);
193 if (ret != PCF50633_TI_EXTENT) {
194 dev_err(dev, "Failed to read time\n");
195 return -EIO;
196 }
197
198 pcf2rtc_time(&alrm->time, &pcf_tm);
199
200 return rtc_valid_tm(&alrm->time);
201}
202
203static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
204{
205 struct pcf50633_rtc *rtc;
206 struct pcf50633_time pcf_tm;
207 int alarm_masked, ret = 0;
208
209 rtc = dev_get_drvdata(dev);
210
211 rtc2pcf_time(&pcf_tm, &alrm->time);
212
213 /* do like mktime does and ignore tm_wday */
214 pcf_tm.time[PCF50633_TI_WKDAY] = 7;
215
216 alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM);
217
218 /* disable alarm interrupt */
219 if (!alarm_masked)
220 pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
221
222 /* Returns 0 on success */
223 ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSCA,
224 PCF50633_TI_EXTENT, &pcf_tm.time[0]);
225 if (!alrm->enabled)
226 rtc->alarm_pending = 0;
227
228 if (!alarm_masked || alrm->enabled)
229 pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
230 rtc->alarm_enabled = alrm->enabled;
231
232 return ret;
233}
234
235static struct rtc_class_ops pcf50633_rtc_ops = {
236 .read_time = pcf50633_rtc_read_time,
237 .set_time = pcf50633_rtc_set_time,
238 .read_alarm = pcf50633_rtc_read_alarm,
239 .set_alarm = pcf50633_rtc_set_alarm,
240 .alarm_irq_enable = pcf50633_rtc_alarm_irq_enable,
241};
242
243static void pcf50633_rtc_irq(int irq, void *data)
244{
245 struct pcf50633_rtc *rtc = data;
246
247 rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF);
248 rtc->alarm_pending = 1;
249}
250
251static int __devinit pcf50633_rtc_probe(struct platform_device *pdev)
252{
253 struct pcf50633_rtc *rtc;
254
255 rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);
256 if (!rtc)
257 return -ENOMEM;
258
259 rtc->pcf = dev_to_pcf50633(pdev->dev.parent);
260 platform_set_drvdata(pdev, rtc);
261 rtc->rtc_dev = rtc_device_register("pcf50633-rtc", &pdev->dev,
262 &pcf50633_rtc_ops, THIS_MODULE);
263
264 if (IS_ERR(rtc->rtc_dev)) {
265 int ret = PTR_ERR(rtc->rtc_dev);
266 kfree(rtc);
267 return ret;
268 }
269
270 pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_ALARM,
271 pcf50633_rtc_irq, rtc);
272 return 0;
273}
274
275static int __devexit pcf50633_rtc_remove(struct platform_device *pdev)
276{
277 struct pcf50633_rtc *rtc;
278
279 rtc = platform_get_drvdata(pdev);
280
281 pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_ALARM);
282
283 rtc_device_unregister(rtc->rtc_dev);
284 kfree(rtc);
285
286 return 0;
287}
288
289static struct platform_driver pcf50633_rtc_driver = {
290 .driver = {
291 .name = "pcf50633-rtc",
292 },
293 .probe = pcf50633_rtc_probe,
294 .remove = __devexit_p(pcf50633_rtc_remove),
295};
296
297static int __init pcf50633_rtc_init(void)
298{
299 return platform_driver_register(&pcf50633_rtc_driver);
300}
301module_init(pcf50633_rtc_init);
302
303static void __exit pcf50633_rtc_exit(void)
304{
305 platform_driver_unregister(&pcf50633_rtc_driver);
306}
307module_exit(pcf50633_rtc_exit);
308
309MODULE_DESCRIPTION("PCF50633 RTC driver");
310MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
311MODULE_LICENSE("GPL");
312