]>
Commit | Line | Data |
---|---|---|
5bccae6e SK |
1 | /* |
2 | * Copyright (c) 2013 Samsung Electronics Co., Ltd | |
3 | * http://www.samsung.com | |
4 | * | |
5 | * Copyright (C) 2013 Google, Inc | |
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 as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/i2c.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/bcd.h> | |
22 | #include <linux/bitops.h> | |
23 | #include <linux/regmap.h> | |
24 | #include <linux/rtc.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/platform_device.h> | |
27 | #include <linux/mfd/samsung/core.h> | |
28 | #include <linux/mfd/samsung/irq.h> | |
29 | #include <linux/mfd/samsung/rtc.h> | |
30 | ||
31 | struct s5m_rtc_info { | |
32 | struct device *dev; | |
33 | struct sec_pmic_dev *s5m87xx; | |
5ccb7d71 | 34 | struct regmap *regmap; |
5bccae6e SK |
35 | struct rtc_device *rtc_dev; |
36 | int irq; | |
37 | int device_type; | |
38 | int rtc_24hr_mode; | |
39 | bool wtsr_smpl; | |
40 | }; | |
41 | ||
42 | static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, | |
43 | int rtc_24hr_mode) | |
44 | { | |
45 | tm->tm_sec = data[RTC_SEC] & 0x7f; | |
46 | tm->tm_min = data[RTC_MIN] & 0x7f; | |
47 | if (rtc_24hr_mode) { | |
48 | tm->tm_hour = data[RTC_HOUR] & 0x1f; | |
49 | } else { | |
50 | tm->tm_hour = data[RTC_HOUR] & 0x0f; | |
51 | if (data[RTC_HOUR] & HOUR_PM_MASK) | |
52 | tm->tm_hour += 12; | |
53 | } | |
54 | ||
55 | tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); | |
56 | tm->tm_mday = data[RTC_DATE] & 0x1f; | |
57 | tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; | |
58 | tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; | |
59 | tm->tm_yday = 0; | |
60 | tm->tm_isdst = 0; | |
61 | } | |
62 | ||
63 | static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) | |
64 | { | |
65 | data[RTC_SEC] = tm->tm_sec; | |
66 | data[RTC_MIN] = tm->tm_min; | |
67 | ||
68 | if (tm->tm_hour >= 12) | |
69 | data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; | |
70 | else | |
71 | data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; | |
72 | ||
73 | data[RTC_WEEKDAY] = 1 << tm->tm_wday; | |
74 | data[RTC_DATE] = tm->tm_mday; | |
75 | data[RTC_MONTH] = tm->tm_mon + 1; | |
76 | data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; | |
77 | ||
78 | if (tm->tm_year < 100) { | |
79 | pr_err("s5m8767 RTC cannot handle the year %d.\n", | |
80 | 1900 + tm->tm_year); | |
81 | return -EINVAL; | |
82 | } else { | |
83 | return 0; | |
84 | } | |
85 | } | |
86 | ||
87 | static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) | |
88 | { | |
89 | int ret; | |
90 | unsigned int data; | |
91 | ||
5ccb7d71 | 92 | ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &data); |
5bccae6e SK |
93 | if (ret < 0) { |
94 | dev_err(info->dev, "failed to read update reg(%d)\n", ret); | |
95 | return ret; | |
96 | } | |
97 | ||
98 | data |= RTC_TIME_EN_MASK; | |
99 | data |= RTC_UDR_MASK; | |
100 | ||
5ccb7d71 | 101 | ret = regmap_write(info->regmap, SEC_RTC_UDR_CON, data); |
5bccae6e SK |
102 | if (ret < 0) { |
103 | dev_err(info->dev, "failed to write update reg(%d)\n", ret); | |
104 | return ret; | |
105 | } | |
106 | ||
107 | do { | |
5ccb7d71 | 108 | ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &data); |
5bccae6e SK |
109 | } while ((data & RTC_UDR_MASK) && !ret); |
110 | ||
111 | return ret; | |
112 | } | |
113 | ||
114 | static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) | |
115 | { | |
116 | int ret; | |
117 | unsigned int data; | |
118 | ||
5ccb7d71 | 119 | ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &data); |
5bccae6e SK |
120 | if (ret < 0) { |
121 | dev_err(info->dev, "%s: fail to read update reg(%d)\n", | |
122 | __func__, ret); | |
123 | return ret; | |
124 | } | |
125 | ||
126 | data &= ~RTC_TIME_EN_MASK; | |
127 | data |= RTC_UDR_MASK; | |
128 | ||
5ccb7d71 | 129 | ret = regmap_write(info->regmap, SEC_RTC_UDR_CON, data); |
5bccae6e SK |
130 | if (ret < 0) { |
131 | dev_err(info->dev, "%s: fail to write update reg(%d)\n", | |
132 | __func__, ret); | |
133 | return ret; | |
134 | } | |
135 | ||
136 | do { | |
5ccb7d71 | 137 | ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &data); |
5bccae6e SK |
138 | } while ((data & RTC_UDR_MASK) && !ret); |
139 | ||
140 | return ret; | |
141 | } | |
142 | ||
143 | static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) | |
144 | { | |
145 | tm->tm_sec = bcd2bin(data[RTC_SEC]); | |
146 | tm->tm_min = bcd2bin(data[RTC_MIN]); | |
147 | ||
148 | if (data[RTC_HOUR] & HOUR_12) { | |
149 | tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); | |
150 | if (data[RTC_HOUR] & HOUR_PM) | |
151 | tm->tm_hour += 12; | |
152 | } else { | |
153 | tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); | |
154 | } | |
155 | ||
156 | tm->tm_wday = data[RTC_WEEKDAY] & 0x07; | |
157 | tm->tm_mday = bcd2bin(data[RTC_DATE]); | |
158 | tm->tm_mon = bcd2bin(data[RTC_MONTH]); | |
159 | tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; | |
160 | tm->tm_year -= 1900; | |
161 | } | |
162 | ||
163 | static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) | |
164 | { | |
165 | data[RTC_SEC] = bin2bcd(tm->tm_sec); | |
166 | data[RTC_MIN] = bin2bcd(tm->tm_min); | |
167 | data[RTC_HOUR] = bin2bcd(tm->tm_hour); | |
168 | data[RTC_WEEKDAY] = tm->tm_wday; | |
169 | data[RTC_DATE] = bin2bcd(tm->tm_mday); | |
170 | data[RTC_MONTH] = bin2bcd(tm->tm_mon); | |
171 | data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); | |
172 | data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); | |
173 | } | |
174 | ||
175 | static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) | |
176 | { | |
177 | struct s5m_rtc_info *info = dev_get_drvdata(dev); | |
178 | u8 data[8]; | |
179 | int ret; | |
180 | ||
5ccb7d71 | 181 | ret = regmap_bulk_read(info->regmap, SEC_RTC_SEC, data, 8); |
5bccae6e SK |
182 | if (ret < 0) |
183 | return ret; | |
184 | ||
185 | switch (info->device_type) { | |
186 | case S5M8763X: | |
187 | s5m8763_data_to_tm(data, tm); | |
188 | break; | |
189 | ||
190 | case S5M8767X: | |
191 | s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); | |
192 | break; | |
193 | ||
194 | default: | |
195 | return -EINVAL; | |
196 | } | |
197 | ||
198 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, | |
199 | 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, | |
200 | tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); | |
201 | ||
202 | return rtc_valid_tm(tm); | |
203 | } | |
204 | ||
205 | static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) | |
206 | { | |
207 | struct s5m_rtc_info *info = dev_get_drvdata(dev); | |
208 | u8 data[8]; | |
209 | int ret = 0; | |
210 | ||
211 | switch (info->device_type) { | |
212 | case S5M8763X: | |
213 | s5m8763_tm_to_data(tm, data); | |
214 | break; | |
215 | case S5M8767X: | |
216 | ret = s5m8767_tm_to_data(tm, data); | |
217 | break; | |
218 | default: | |
219 | return -EINVAL; | |
220 | } | |
221 | ||
222 | if (ret < 0) | |
223 | return ret; | |
224 | ||
225 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, | |
226 | 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, | |
227 | tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); | |
228 | ||
5ccb7d71 | 229 | ret = regmap_raw_write(info->regmap, SEC_RTC_SEC, data, 8); |
5bccae6e SK |
230 | if (ret < 0) |
231 | return ret; | |
232 | ||
233 | ret = s5m8767_rtc_set_time_reg(info); | |
234 | ||
235 | return ret; | |
236 | } | |
237 | ||
238 | static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) | |
239 | { | |
240 | struct s5m_rtc_info *info = dev_get_drvdata(dev); | |
241 | u8 data[8]; | |
242 | unsigned int val; | |
243 | int ret, i; | |
244 | ||
5ccb7d71 | 245 | ret = regmap_bulk_read(info->regmap, SEC_ALARM0_SEC, data, 8); |
5bccae6e SK |
246 | if (ret < 0) |
247 | return ret; | |
248 | ||
249 | switch (info->device_type) { | |
250 | case S5M8763X: | |
251 | s5m8763_data_to_tm(data, &alrm->time); | |
5ccb7d71 | 252 | ret = regmap_read(info->regmap, SEC_ALARM0_CONF, &val); |
5bccae6e SK |
253 | if (ret < 0) |
254 | return ret; | |
255 | ||
256 | alrm->enabled = !!val; | |
257 | ||
5ccb7d71 | 258 | ret = regmap_read(info->regmap, SEC_RTC_STATUS, &val); |
5bccae6e SK |
259 | if (ret < 0) |
260 | return ret; | |
261 | ||
262 | break; | |
263 | ||
264 | case S5M8767X: | |
265 | s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); | |
266 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, | |
267 | 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, | |
268 | alrm->time.tm_mday, alrm->time.tm_hour, | |
269 | alrm->time.tm_min, alrm->time.tm_sec, | |
270 | alrm->time.tm_wday); | |
271 | ||
272 | alrm->enabled = 0; | |
273 | for (i = 0; i < 7; i++) { | |
274 | if (data[i] & ALARM_ENABLE_MASK) { | |
275 | alrm->enabled = 1; | |
276 | break; | |
277 | } | |
278 | } | |
279 | ||
280 | alrm->pending = 0; | |
5ccb7d71 | 281 | ret = regmap_read(info->regmap, SEC_RTC_STATUS, &val); |
5bccae6e SK |
282 | if (ret < 0) |
283 | return ret; | |
284 | break; | |
285 | ||
286 | default: | |
287 | return -EINVAL; | |
288 | } | |
289 | ||
290 | if (val & ALARM0_STATUS) | |
291 | alrm->pending = 1; | |
292 | else | |
293 | alrm->pending = 0; | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
298 | static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) | |
299 | { | |
300 | u8 data[8]; | |
301 | int ret, i; | |
302 | struct rtc_time tm; | |
303 | ||
5ccb7d71 | 304 | ret = regmap_bulk_read(info->regmap, SEC_ALARM0_SEC, data, 8); |
5bccae6e SK |
305 | if (ret < 0) |
306 | return ret; | |
307 | ||
308 | s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); | |
309 | dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, | |
310 | 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, | |
311 | tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); | |
312 | ||
313 | switch (info->device_type) { | |
314 | case S5M8763X: | |
5ccb7d71 | 315 | ret = regmap_write(info->regmap, SEC_ALARM0_CONF, 0); |
5bccae6e SK |
316 | break; |
317 | ||
318 | case S5M8767X: | |
319 | for (i = 0; i < 7; i++) | |
320 | data[i] &= ~ALARM_ENABLE_MASK; | |
321 | ||
5ccb7d71 | 322 | ret = regmap_raw_write(info->regmap, SEC_ALARM0_SEC, data, 8); |
5bccae6e SK |
323 | if (ret < 0) |
324 | return ret; | |
325 | ||
326 | ret = s5m8767_rtc_set_alarm_reg(info); | |
327 | ||
328 | break; | |
329 | ||
330 | default: | |
331 | return -EINVAL; | |
332 | } | |
333 | ||
334 | return ret; | |
335 | } | |
336 | ||
337 | static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) | |
338 | { | |
339 | int ret; | |
340 | u8 data[8]; | |
341 | u8 alarm0_conf; | |
342 | struct rtc_time tm; | |
343 | ||
5ccb7d71 | 344 | ret = regmap_bulk_read(info->regmap, SEC_ALARM0_SEC, data, 8); |
5bccae6e SK |
345 | if (ret < 0) |
346 | return ret; | |
347 | ||
348 | s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); | |
349 | dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, | |
350 | 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, | |
351 | tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); | |
352 | ||
353 | switch (info->device_type) { | |
354 | case S5M8763X: | |
355 | alarm0_conf = 0x77; | |
5ccb7d71 | 356 | ret = regmap_write(info->regmap, SEC_ALARM0_CONF, alarm0_conf); |
5bccae6e SK |
357 | break; |
358 | ||
359 | case S5M8767X: | |
360 | data[RTC_SEC] |= ALARM_ENABLE_MASK; | |
361 | data[RTC_MIN] |= ALARM_ENABLE_MASK; | |
362 | data[RTC_HOUR] |= ALARM_ENABLE_MASK; | |
363 | data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; | |
364 | if (data[RTC_DATE] & 0x1f) | |
365 | data[RTC_DATE] |= ALARM_ENABLE_MASK; | |
366 | if (data[RTC_MONTH] & 0xf) | |
367 | data[RTC_MONTH] |= ALARM_ENABLE_MASK; | |
368 | if (data[RTC_YEAR1] & 0x7f) | |
369 | data[RTC_YEAR1] |= ALARM_ENABLE_MASK; | |
370 | ||
5ccb7d71 | 371 | ret = regmap_raw_write(info->regmap, SEC_ALARM0_SEC, data, 8); |
5bccae6e SK |
372 | if (ret < 0) |
373 | return ret; | |
374 | ret = s5m8767_rtc_set_alarm_reg(info); | |
375 | ||
376 | break; | |
377 | ||
378 | default: | |
379 | return -EINVAL; | |
380 | } | |
381 | ||
382 | return ret; | |
383 | } | |
384 | ||
385 | static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) | |
386 | { | |
387 | struct s5m_rtc_info *info = dev_get_drvdata(dev); | |
388 | u8 data[8]; | |
389 | int ret; | |
390 | ||
391 | switch (info->device_type) { | |
392 | case S5M8763X: | |
393 | s5m8763_tm_to_data(&alrm->time, data); | |
394 | break; | |
395 | ||
396 | case S5M8767X: | |
397 | s5m8767_tm_to_data(&alrm->time, data); | |
398 | break; | |
399 | ||
400 | default: | |
401 | return -EINVAL; | |
402 | } | |
403 | ||
404 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, | |
405 | 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, | |
406 | alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, | |
407 | alrm->time.tm_sec, alrm->time.tm_wday); | |
408 | ||
409 | ret = s5m_rtc_stop_alarm(info); | |
410 | if (ret < 0) | |
411 | return ret; | |
412 | ||
5ccb7d71 | 413 | ret = regmap_raw_write(info->regmap, SEC_ALARM0_SEC, data, 8); |
5bccae6e SK |
414 | if (ret < 0) |
415 | return ret; | |
416 | ||
417 | ret = s5m8767_rtc_set_alarm_reg(info); | |
418 | if (ret < 0) | |
419 | return ret; | |
420 | ||
421 | if (alrm->enabled) | |
422 | ret = s5m_rtc_start_alarm(info); | |
423 | ||
424 | return ret; | |
425 | } | |
426 | ||
427 | static int s5m_rtc_alarm_irq_enable(struct device *dev, | |
428 | unsigned int enabled) | |
429 | { | |
430 | struct s5m_rtc_info *info = dev_get_drvdata(dev); | |
431 | ||
432 | if (enabled) | |
433 | return s5m_rtc_start_alarm(info); | |
434 | else | |
435 | return s5m_rtc_stop_alarm(info); | |
436 | } | |
437 | ||
438 | static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) | |
439 | { | |
440 | struct s5m_rtc_info *info = data; | |
441 | ||
442 | rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); | |
443 | ||
444 | return IRQ_HANDLED; | |
445 | } | |
446 | ||
447 | static const struct rtc_class_ops s5m_rtc_ops = { | |
448 | .read_time = s5m_rtc_read_time, | |
449 | .set_time = s5m_rtc_set_time, | |
450 | .read_alarm = s5m_rtc_read_alarm, | |
451 | .set_alarm = s5m_rtc_set_alarm, | |
452 | .alarm_irq_enable = s5m_rtc_alarm_irq_enable, | |
453 | }; | |
454 | ||
455 | static void s5m_rtc_enable_wtsr(struct s5m_rtc_info *info, bool enable) | |
456 | { | |
457 | int ret; | |
5ccb7d71 | 458 | ret = regmap_update_bits(info->regmap, SEC_WTSR_SMPL_CNTL, |
5bccae6e SK |
459 | WTSR_ENABLE_MASK, |
460 | enable ? WTSR_ENABLE_MASK : 0); | |
461 | if (ret < 0) | |
462 | dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n", | |
463 | __func__, ret); | |
464 | } | |
465 | ||
466 | static void s5m_rtc_enable_smpl(struct s5m_rtc_info *info, bool enable) | |
467 | { | |
468 | int ret; | |
5ccb7d71 | 469 | ret = regmap_update_bits(info->regmap, SEC_WTSR_SMPL_CNTL, |
5bccae6e SK |
470 | SMPL_ENABLE_MASK, |
471 | enable ? SMPL_ENABLE_MASK : 0); | |
472 | if (ret < 0) | |
473 | dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n", | |
474 | __func__, ret); | |
475 | } | |
476 | ||
477 | static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) | |
478 | { | |
479 | u8 data[2]; | |
480 | unsigned int tp_read; | |
481 | int ret; | |
482 | struct rtc_time tm; | |
483 | ||
5ccb7d71 | 484 | ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &tp_read); |
5bccae6e SK |
485 | if (ret < 0) { |
486 | dev_err(info->dev, "%s: fail to read control reg(%d)\n", | |
487 | __func__, ret); | |
488 | return ret; | |
489 | } | |
490 | ||
491 | /* Set RTC control register : Binary mode, 24hour mode */ | |
492 | data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); | |
493 | data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); | |
494 | ||
495 | info->rtc_24hr_mode = 1; | |
5ccb7d71 | 496 | ret = regmap_raw_write(info->regmap, SEC_ALARM0_CONF, data, 2); |
5bccae6e SK |
497 | if (ret < 0) { |
498 | dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", | |
499 | __func__, ret); | |
500 | return ret; | |
501 | } | |
502 | ||
503 | /* In first boot time, Set rtc time to 1/1/2012 00:00:00(SUN) */ | |
504 | if ((tp_read & RTC_TCON_MASK) == 0) { | |
505 | dev_dbg(info->dev, "rtc init\n"); | |
506 | tm.tm_sec = 0; | |
507 | tm.tm_min = 0; | |
508 | tm.tm_hour = 0; | |
509 | tm.tm_wday = 0; | |
510 | tm.tm_mday = 1; | |
511 | tm.tm_mon = 0; | |
512 | tm.tm_year = 112; | |
513 | tm.tm_yday = 0; | |
514 | tm.tm_isdst = 0; | |
515 | ret = s5m_rtc_set_time(info->dev, &tm); | |
516 | } | |
517 | ||
5ccb7d71 | 518 | ret = regmap_update_bits(info->regmap, SEC_RTC_UDR_CON, |
5bccae6e SK |
519 | RTC_TCON_MASK, tp_read | RTC_TCON_MASK); |
520 | if (ret < 0) | |
521 | dev_err(info->dev, "%s: fail to update TCON reg(%d)\n", | |
522 | __func__, ret); | |
523 | ||
524 | return ret; | |
525 | } | |
526 | ||
527 | static int s5m_rtc_probe(struct platform_device *pdev) | |
528 | { | |
529 | struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); | |
530 | struct sec_platform_data *pdata = s5m87xx->pdata; | |
531 | struct s5m_rtc_info *info; | |
532 | int ret; | |
533 | ||
534 | if (!pdata) { | |
535 | dev_err(pdev->dev.parent, "Platform data not supplied\n"); | |
536 | return -ENODEV; | |
537 | } | |
538 | ||
539 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); | |
540 | if (!info) | |
541 | return -ENOMEM; | |
542 | ||
543 | info->dev = &pdev->dev; | |
544 | info->s5m87xx = s5m87xx; | |
5ccb7d71 | 545 | info->regmap = s5m87xx->regmap; |
5bccae6e SK |
546 | info->device_type = s5m87xx->device_type; |
547 | info->wtsr_smpl = s5m87xx->wtsr_smpl; | |
548 | ||
549 | switch (pdata->device_type) { | |
550 | case S5M8763X: | |
7b003be8 KK |
551 | info->irq = regmap_irq_get_virq(s5m87xx->irq_data, |
552 | S5M8763_IRQ_ALARM0); | |
5bccae6e SK |
553 | break; |
554 | ||
555 | case S5M8767X: | |
7b003be8 KK |
556 | info->irq = regmap_irq_get_virq(s5m87xx->irq_data, |
557 | S5M8767_IRQ_RTCA1); | |
5bccae6e SK |
558 | break; |
559 | ||
560 | default: | |
561 | ret = -EINVAL; | |
562 | dev_err(&pdev->dev, "Unsupported device type: %d\n", ret); | |
563 | return ret; | |
564 | } | |
565 | ||
566 | platform_set_drvdata(pdev, info); | |
567 | ||
568 | ret = s5m8767_rtc_init_reg(info); | |
569 | ||
570 | if (info->wtsr_smpl) { | |
571 | s5m_rtc_enable_wtsr(info, true); | |
572 | s5m_rtc_enable_smpl(info, true); | |
573 | } | |
574 | ||
575 | device_init_wakeup(&pdev->dev, 1); | |
576 | ||
577 | info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", | |
578 | &s5m_rtc_ops, THIS_MODULE); | |
579 | ||
580 | if (IS_ERR(info->rtc_dev)) | |
581 | return PTR_ERR(info->rtc_dev); | |
582 | ||
583 | ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, | |
584 | s5m_rtc_alarm_irq, 0, "rtc-alarm0", | |
585 | info); | |
586 | if (ret < 0) | |
587 | dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", | |
588 | info->irq, ret); | |
589 | ||
590 | return ret; | |
591 | } | |
592 | ||
593 | static void s5m_rtc_shutdown(struct platform_device *pdev) | |
594 | { | |
595 | struct s5m_rtc_info *info = platform_get_drvdata(pdev); | |
596 | int i; | |
597 | unsigned int val = 0; | |
598 | if (info->wtsr_smpl) { | |
599 | for (i = 0; i < 3; i++) { | |
600 | s5m_rtc_enable_wtsr(info, false); | |
5ccb7d71 | 601 | regmap_read(info->regmap, SEC_WTSR_SMPL_CNTL, &val); |
5bccae6e SK |
602 | pr_debug("%s: WTSR_SMPL reg(0x%02x)\n", __func__, val); |
603 | if (val & WTSR_ENABLE_MASK) | |
604 | pr_emerg("%s: fail to disable WTSR\n", | |
605 | __func__); | |
606 | else { | |
607 | pr_info("%s: success to disable WTSR\n", | |
608 | __func__); | |
609 | break; | |
610 | } | |
611 | } | |
612 | } | |
613 | /* Disable SMPL when power off */ | |
614 | s5m_rtc_enable_smpl(info, false); | |
615 | } | |
616 | ||
617 | static const struct platform_device_id s5m_rtc_id[] = { | |
618 | { "s5m-rtc", 0 }, | |
619 | }; | |
620 | ||
621 | static struct platform_driver s5m_rtc_driver = { | |
622 | .driver = { | |
623 | .name = "s5m-rtc", | |
624 | .owner = THIS_MODULE, | |
625 | }, | |
626 | .probe = s5m_rtc_probe, | |
627 | .shutdown = s5m_rtc_shutdown, | |
628 | .id_table = s5m_rtc_id, | |
629 | }; | |
630 | ||
631 | module_platform_driver(s5m_rtc_driver); | |
632 | ||
633 | /* Module information */ | |
634 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
635 | MODULE_DESCRIPTION("Samsung S5M RTC driver"); | |
636 | MODULE_LICENSE("GPL"); | |
637 | MODULE_ALIAS("platform:s5m-rtc"); |