1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* |
3 | * Real time clock device driver for DA9063 |
4 | * Copyright (C) 2013-2015 Dialog Semiconductor Ltd. |
5 | */ |
6 | |
7 | #include <linux/delay.h> |
8 | #include <linux/init.h> |
9 | #include <linux/interrupt.h> |
10 | #include <linux/kernel.h> |
11 | #include <linux/module.h> |
12 | #include <linux/of.h> |
13 | #include <linux/platform_device.h> |
14 | #include <linux/pm_wakeirq.h> |
15 | #include <linux/regmap.h> |
16 | #include <linux/rtc.h> |
17 | #include <linux/slab.h> |
18 | |
19 | #include <linux/mfd/da9062/registers.h> |
20 | #include <linux/mfd/da9063/registers.h> |
21 | #include <linux/mfd/da9063/core.h> |
22 | |
23 | #define YEARS_TO_DA9063(year) ((year) - 100) |
24 | #define MONTHS_TO_DA9063(month) ((month) + 1) |
25 | #define YEARS_FROM_DA9063(year) ((year) + 100) |
26 | #define MONTHS_FROM_DA9063(month) ((month) - 1) |
27 | |
28 | enum { |
29 | RTC_SEC = 0, |
30 | RTC_MIN = 1, |
31 | RTC_HOUR = 2, |
32 | RTC_DAY = 3, |
33 | RTC_MONTH = 4, |
34 | RTC_YEAR = 5, |
35 | RTC_DATA_LEN |
36 | }; |
37 | |
38 | struct da9063_compatible_rtc_regmap { |
39 | /* REGS */ |
40 | int rtc_enable_reg; |
41 | int rtc_enable_32k_crystal_reg; |
42 | int rtc_alarm_secs_reg; |
43 | int rtc_alarm_year_reg; |
44 | int rtc_count_secs_reg; |
45 | int rtc_count_year_reg; |
46 | int rtc_event_reg; |
47 | /* MASKS */ |
48 | int rtc_enable_mask; |
49 | int rtc_crystal_mask; |
50 | int rtc_event_alarm_mask; |
51 | int rtc_alarm_on_mask; |
52 | int rtc_alarm_status_mask; |
53 | int rtc_tick_on_mask; |
54 | int rtc_ready_to_read_mask; |
55 | int rtc_count_sec_mask; |
56 | int rtc_count_min_mask; |
57 | int rtc_count_hour_mask; |
58 | int rtc_count_day_mask; |
59 | int rtc_count_month_mask; |
60 | int rtc_count_year_mask; |
61 | /* ALARM CONFIG */ |
62 | int rtc_data_start; |
63 | int rtc_alarm_len; |
64 | }; |
65 | |
66 | struct da9063_compatible_rtc { |
67 | struct rtc_device *rtc_dev; |
68 | struct rtc_time alarm_time; |
69 | struct regmap *regmap; |
70 | const struct da9063_compatible_rtc_regmap *config; |
71 | bool rtc_sync; |
72 | }; |
73 | |
74 | static const struct da9063_compatible_rtc_regmap da9063_ad_regs = { |
75 | /* REGS */ |
76 | .rtc_enable_reg = DA9063_REG_CONTROL_E, |
77 | .rtc_alarm_secs_reg = DA9063_AD_REG_ALARM_MI, |
78 | .rtc_alarm_year_reg = DA9063_AD_REG_ALARM_Y, |
79 | .rtc_count_secs_reg = DA9063_REG_COUNT_S, |
80 | .rtc_count_year_reg = DA9063_REG_COUNT_Y, |
81 | .rtc_event_reg = DA9063_REG_EVENT_A, |
82 | /* MASKS */ |
83 | .rtc_enable_mask = DA9063_RTC_EN, |
84 | .rtc_crystal_mask = DA9063_CRYSTAL, |
85 | .rtc_enable_32k_crystal_reg = DA9063_REG_EN_32K, |
86 | .rtc_event_alarm_mask = DA9063_E_ALARM, |
87 | .rtc_alarm_on_mask = DA9063_ALARM_ON, |
88 | .rtc_alarm_status_mask = DA9063_ALARM_STATUS_ALARM | |
89 | DA9063_ALARM_STATUS_TICK, |
90 | .rtc_tick_on_mask = DA9063_TICK_ON, |
91 | .rtc_ready_to_read_mask = DA9063_RTC_READ, |
92 | .rtc_count_sec_mask = DA9063_COUNT_SEC_MASK, |
93 | .rtc_count_min_mask = DA9063_COUNT_MIN_MASK, |
94 | .rtc_count_hour_mask = DA9063_COUNT_HOUR_MASK, |
95 | .rtc_count_day_mask = DA9063_COUNT_DAY_MASK, |
96 | .rtc_count_month_mask = DA9063_COUNT_MONTH_MASK, |
97 | .rtc_count_year_mask = DA9063_COUNT_YEAR_MASK, |
98 | /* ALARM CONFIG */ |
99 | .rtc_data_start = RTC_MIN, |
100 | .rtc_alarm_len = RTC_DATA_LEN - 1, |
101 | }; |
102 | |
103 | static const struct da9063_compatible_rtc_regmap da9063_bb_regs = { |
104 | /* REGS */ |
105 | .rtc_enable_reg = DA9063_REG_CONTROL_E, |
106 | .rtc_alarm_secs_reg = DA9063_BB_REG_ALARM_S, |
107 | .rtc_alarm_year_reg = DA9063_BB_REG_ALARM_Y, |
108 | .rtc_count_secs_reg = DA9063_REG_COUNT_S, |
109 | .rtc_count_year_reg = DA9063_REG_COUNT_Y, |
110 | .rtc_event_reg = DA9063_REG_EVENT_A, |
111 | /* MASKS */ |
112 | .rtc_enable_mask = DA9063_RTC_EN, |
113 | .rtc_crystal_mask = DA9063_CRYSTAL, |
114 | .rtc_enable_32k_crystal_reg = DA9063_REG_EN_32K, |
115 | .rtc_event_alarm_mask = DA9063_E_ALARM, |
116 | .rtc_alarm_on_mask = DA9063_ALARM_ON, |
117 | .rtc_alarm_status_mask = DA9063_ALARM_STATUS_ALARM | |
118 | DA9063_ALARM_STATUS_TICK, |
119 | .rtc_tick_on_mask = DA9063_TICK_ON, |
120 | .rtc_ready_to_read_mask = DA9063_RTC_READ, |
121 | .rtc_count_sec_mask = DA9063_COUNT_SEC_MASK, |
122 | .rtc_count_min_mask = DA9063_COUNT_MIN_MASK, |
123 | .rtc_count_hour_mask = DA9063_COUNT_HOUR_MASK, |
124 | .rtc_count_day_mask = DA9063_COUNT_DAY_MASK, |
125 | .rtc_count_month_mask = DA9063_COUNT_MONTH_MASK, |
126 | .rtc_count_year_mask = DA9063_COUNT_YEAR_MASK, |
127 | /* ALARM CONFIG */ |
128 | .rtc_data_start = RTC_SEC, |
129 | .rtc_alarm_len = RTC_DATA_LEN, |
130 | }; |
131 | |
132 | static const struct da9063_compatible_rtc_regmap da9062_aa_regs = { |
133 | /* REGS */ |
134 | .rtc_enable_reg = DA9062AA_CONTROL_E, |
135 | .rtc_alarm_secs_reg = DA9062AA_ALARM_S, |
136 | .rtc_alarm_year_reg = DA9062AA_ALARM_Y, |
137 | .rtc_count_secs_reg = DA9062AA_COUNT_S, |
138 | .rtc_count_year_reg = DA9062AA_COUNT_Y, |
139 | .rtc_event_reg = DA9062AA_EVENT_A, |
140 | /* MASKS */ |
141 | .rtc_enable_mask = DA9062AA_RTC_EN_MASK, |
142 | .rtc_crystal_mask = DA9062AA_CRYSTAL_MASK, |
143 | .rtc_enable_32k_crystal_reg = DA9062AA_EN_32K, |
144 | .rtc_event_alarm_mask = DA9062AA_M_ALARM_MASK, |
145 | .rtc_alarm_on_mask = DA9062AA_ALARM_ON_MASK, |
146 | .rtc_alarm_status_mask = (0x02 << 6), |
147 | .rtc_tick_on_mask = DA9062AA_TICK_ON_MASK, |
148 | .rtc_ready_to_read_mask = DA9062AA_RTC_READ_MASK, |
149 | .rtc_count_sec_mask = DA9062AA_COUNT_SEC_MASK, |
150 | .rtc_count_min_mask = DA9062AA_COUNT_MIN_MASK, |
151 | .rtc_count_hour_mask = DA9062AA_COUNT_HOUR_MASK, |
152 | .rtc_count_day_mask = DA9062AA_COUNT_DAY_MASK, |
153 | .rtc_count_month_mask = DA9062AA_COUNT_MONTH_MASK, |
154 | .rtc_count_year_mask = DA9062AA_COUNT_YEAR_MASK, |
155 | /* ALARM CONFIG */ |
156 | .rtc_data_start = RTC_SEC, |
157 | .rtc_alarm_len = RTC_DATA_LEN, |
158 | }; |
159 | |
160 | static const struct of_device_id da9063_compatible_reg_id_table[] = { |
161 | { .compatible = "dlg,da9063-rtc" , .data = &da9063_bb_regs }, |
162 | { .compatible = "dlg,da9062-rtc" , .data = &da9062_aa_regs }, |
163 | { }, |
164 | }; |
165 | MODULE_DEVICE_TABLE(of, da9063_compatible_reg_id_table); |
166 | |
167 | static void da9063_data_to_tm(u8 *data, struct rtc_time *tm, |
168 | struct da9063_compatible_rtc *rtc) |
169 | { |
170 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
171 | |
172 | tm->tm_sec = data[RTC_SEC] & config->rtc_count_sec_mask; |
173 | tm->tm_min = data[RTC_MIN] & config->rtc_count_min_mask; |
174 | tm->tm_hour = data[RTC_HOUR] & config->rtc_count_hour_mask; |
175 | tm->tm_mday = data[RTC_DAY] & config->rtc_count_day_mask; |
176 | tm->tm_mon = MONTHS_FROM_DA9063(data[RTC_MONTH] & |
177 | config->rtc_count_month_mask); |
178 | tm->tm_year = YEARS_FROM_DA9063(data[RTC_YEAR] & |
179 | config->rtc_count_year_mask); |
180 | } |
181 | |
182 | static void da9063_tm_to_data(struct rtc_time *tm, u8 *data, |
183 | struct da9063_compatible_rtc *rtc) |
184 | { |
185 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
186 | |
187 | data[RTC_SEC] = tm->tm_sec & config->rtc_count_sec_mask; |
188 | data[RTC_MIN] = tm->tm_min & config->rtc_count_min_mask; |
189 | data[RTC_HOUR] = tm->tm_hour & config->rtc_count_hour_mask; |
190 | data[RTC_DAY] = tm->tm_mday & config->rtc_count_day_mask; |
191 | data[RTC_MONTH] = MONTHS_TO_DA9063(tm->tm_mon) & |
192 | config->rtc_count_month_mask; |
193 | data[RTC_YEAR] = YEARS_TO_DA9063(tm->tm_year) & |
194 | config->rtc_count_year_mask; |
195 | } |
196 | |
197 | static int da9063_rtc_stop_alarm(struct device *dev) |
198 | { |
199 | struct da9063_compatible_rtc *rtc = dev_get_drvdata(dev); |
200 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
201 | |
202 | return regmap_update_bits(map: rtc->regmap, |
203 | reg: config->rtc_alarm_year_reg, |
204 | mask: config->rtc_alarm_on_mask, |
205 | val: 0); |
206 | } |
207 | |
208 | static int da9063_rtc_start_alarm(struct device *dev) |
209 | { |
210 | struct da9063_compatible_rtc *rtc = dev_get_drvdata(dev); |
211 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
212 | |
213 | return regmap_update_bits(map: rtc->regmap, |
214 | reg: config->rtc_alarm_year_reg, |
215 | mask: config->rtc_alarm_on_mask, |
216 | val: config->rtc_alarm_on_mask); |
217 | } |
218 | |
219 | static int da9063_rtc_read_time(struct device *dev, struct rtc_time *tm) |
220 | { |
221 | struct da9063_compatible_rtc *rtc = dev_get_drvdata(dev); |
222 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
223 | unsigned long tm_secs; |
224 | unsigned long al_secs; |
225 | u8 data[RTC_DATA_LEN]; |
226 | int ret; |
227 | |
228 | ret = regmap_bulk_read(map: rtc->regmap, |
229 | reg: config->rtc_count_secs_reg, |
230 | val: data, val_count: RTC_DATA_LEN); |
231 | if (ret < 0) { |
232 | dev_err(dev, "Failed to read RTC time data: %d\n" , ret); |
233 | return ret; |
234 | } |
235 | |
236 | if (!(data[RTC_SEC] & config->rtc_ready_to_read_mask)) { |
237 | dev_dbg(dev, "RTC not yet ready to be read by the host\n" ); |
238 | return -EINVAL; |
239 | } |
240 | |
241 | da9063_data_to_tm(data, tm, rtc); |
242 | |
243 | tm_secs = rtc_tm_to_time64(tm); |
244 | al_secs = rtc_tm_to_time64(tm: &rtc->alarm_time); |
245 | |
246 | /* handle the rtc synchronisation delay */ |
247 | if (rtc->rtc_sync && al_secs - tm_secs == 1) |
248 | memcpy(tm, &rtc->alarm_time, sizeof(struct rtc_time)); |
249 | else |
250 | rtc->rtc_sync = false; |
251 | |
252 | return 0; |
253 | } |
254 | |
255 | static int da9063_rtc_set_time(struct device *dev, struct rtc_time *tm) |
256 | { |
257 | struct da9063_compatible_rtc *rtc = dev_get_drvdata(dev); |
258 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
259 | u8 data[RTC_DATA_LEN]; |
260 | int ret; |
261 | |
262 | da9063_tm_to_data(tm, data, rtc); |
263 | ret = regmap_bulk_write(map: rtc->regmap, |
264 | reg: config->rtc_count_secs_reg, |
265 | val: data, val_count: RTC_DATA_LEN); |
266 | if (ret < 0) |
267 | dev_err(dev, "Failed to set RTC time data: %d\n" , ret); |
268 | |
269 | return ret; |
270 | } |
271 | |
272 | static int da9063_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
273 | { |
274 | struct da9063_compatible_rtc *rtc = dev_get_drvdata(dev); |
275 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
276 | u8 data[RTC_DATA_LEN]; |
277 | int ret; |
278 | unsigned int val; |
279 | |
280 | data[RTC_SEC] = 0; |
281 | ret = regmap_bulk_read(map: rtc->regmap, |
282 | reg: config->rtc_alarm_secs_reg, |
283 | val: &data[config->rtc_data_start], |
284 | val_count: config->rtc_alarm_len); |
285 | if (ret < 0) |
286 | return ret; |
287 | |
288 | da9063_data_to_tm(data, tm: &alrm->time, rtc); |
289 | |
290 | alrm->enabled = !!(data[RTC_YEAR] & config->rtc_alarm_on_mask); |
291 | |
292 | ret = regmap_read(map: rtc->regmap, |
293 | reg: config->rtc_event_reg, |
294 | val: &val); |
295 | if (ret < 0) |
296 | return ret; |
297 | |
298 | if (val & config->rtc_event_alarm_mask) |
299 | alrm->pending = 1; |
300 | else |
301 | alrm->pending = 0; |
302 | |
303 | return 0; |
304 | } |
305 | |
306 | static int da9063_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
307 | { |
308 | struct da9063_compatible_rtc *rtc = dev_get_drvdata(dev); |
309 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
310 | u8 data[RTC_DATA_LEN]; |
311 | int ret; |
312 | |
313 | da9063_tm_to_data(tm: &alrm->time, data, rtc); |
314 | |
315 | ret = da9063_rtc_stop_alarm(dev); |
316 | if (ret < 0) { |
317 | dev_err(dev, "Failed to stop alarm: %d\n" , ret); |
318 | return ret; |
319 | } |
320 | |
321 | ret = regmap_bulk_write(map: rtc->regmap, |
322 | reg: config->rtc_alarm_secs_reg, |
323 | val: &data[config->rtc_data_start], |
324 | val_count: config->rtc_alarm_len); |
325 | if (ret < 0) { |
326 | dev_err(dev, "Failed to write alarm: %d\n" , ret); |
327 | return ret; |
328 | } |
329 | |
330 | da9063_data_to_tm(data, tm: &rtc->alarm_time, rtc); |
331 | |
332 | if (alrm->enabled) { |
333 | ret = da9063_rtc_start_alarm(dev); |
334 | if (ret < 0) { |
335 | dev_err(dev, "Failed to start alarm: %d\n" , ret); |
336 | return ret; |
337 | } |
338 | } |
339 | |
340 | return ret; |
341 | } |
342 | |
343 | static int da9063_rtc_alarm_irq_enable(struct device *dev, |
344 | unsigned int enabled) |
345 | { |
346 | if (enabled) |
347 | return da9063_rtc_start_alarm(dev); |
348 | else |
349 | return da9063_rtc_stop_alarm(dev); |
350 | } |
351 | |
352 | static irqreturn_t da9063_alarm_event(int irq, void *data) |
353 | { |
354 | struct da9063_compatible_rtc *rtc = data; |
355 | const struct da9063_compatible_rtc_regmap *config = rtc->config; |
356 | |
357 | regmap_update_bits(map: rtc->regmap, |
358 | reg: config->rtc_alarm_year_reg, |
359 | mask: config->rtc_alarm_on_mask, |
360 | val: 0); |
361 | |
362 | rtc->rtc_sync = true; |
363 | rtc_update_irq(rtc: rtc->rtc_dev, num: 1, RTC_IRQF | RTC_AF); |
364 | |
365 | return IRQ_HANDLED; |
366 | } |
367 | |
368 | static const struct rtc_class_ops da9063_rtc_ops = { |
369 | .read_time = da9063_rtc_read_time, |
370 | .set_time = da9063_rtc_set_time, |
371 | .read_alarm = da9063_rtc_read_alarm, |
372 | .set_alarm = da9063_rtc_set_alarm, |
373 | .alarm_irq_enable = da9063_rtc_alarm_irq_enable, |
374 | }; |
375 | |
376 | static int da9063_rtc_probe(struct platform_device *pdev) |
377 | { |
378 | struct da9063_compatible_rtc *rtc; |
379 | const struct da9063_compatible_rtc_regmap *config; |
380 | int irq_alarm; |
381 | u8 data[RTC_DATA_LEN]; |
382 | int ret; |
383 | |
384 | if (!pdev->dev.of_node) |
385 | return -ENXIO; |
386 | |
387 | rtc = devm_kzalloc(dev: &pdev->dev, size: sizeof(*rtc), GFP_KERNEL); |
388 | if (!rtc) |
389 | return -ENOMEM; |
390 | |
391 | rtc->config = device_get_match_data(dev: &pdev->dev); |
392 | if (of_device_is_compatible(device: pdev->dev.of_node, "dlg,da9063-rtc" )) { |
393 | struct da9063 *chip = dev_get_drvdata(dev: pdev->dev.parent); |
394 | |
395 | if (chip->variant_code == PMIC_DA9063_AD) |
396 | rtc->config = &da9063_ad_regs; |
397 | } |
398 | |
399 | rtc->regmap = dev_get_regmap(dev: pdev->dev.parent, NULL); |
400 | if (!rtc->regmap) { |
401 | dev_warn(&pdev->dev, "Parent regmap unavailable.\n" ); |
402 | return -ENXIO; |
403 | } |
404 | |
405 | config = rtc->config; |
406 | ret = regmap_update_bits(map: rtc->regmap, |
407 | reg: config->rtc_enable_reg, |
408 | mask: config->rtc_enable_mask, |
409 | val: config->rtc_enable_mask); |
410 | if (ret < 0) |
411 | return dev_err_probe(dev: &pdev->dev, err: ret, fmt: "Failed to enable RTC\n" ); |
412 | |
413 | ret = regmap_update_bits(map: rtc->regmap, |
414 | reg: config->rtc_enable_32k_crystal_reg, |
415 | mask: config->rtc_crystal_mask, |
416 | val: config->rtc_crystal_mask); |
417 | if (ret < 0) |
418 | return dev_err_probe(dev: &pdev->dev, err: ret, |
419 | fmt: "Failed to run 32kHz oscillator\n" ); |
420 | |
421 | ret = regmap_update_bits(map: rtc->regmap, |
422 | reg: config->rtc_alarm_secs_reg, |
423 | mask: config->rtc_alarm_status_mask, |
424 | val: 0); |
425 | if (ret < 0) |
426 | return dev_err_probe(dev: &pdev->dev, err: ret, |
427 | fmt: "Failed to access RTC alarm register\n" ); |
428 | |
429 | ret = regmap_update_bits(map: rtc->regmap, |
430 | reg: config->rtc_alarm_secs_reg, |
431 | DA9063_ALARM_STATUS_ALARM, |
432 | DA9063_ALARM_STATUS_ALARM); |
433 | if (ret < 0) |
434 | return dev_err_probe(dev: &pdev->dev, err: ret, |
435 | fmt: "Failed to access RTC alarm register\n" ); |
436 | |
437 | ret = regmap_update_bits(map: rtc->regmap, |
438 | reg: config->rtc_alarm_year_reg, |
439 | mask: config->rtc_tick_on_mask, |
440 | val: 0); |
441 | if (ret < 0) |
442 | return dev_err_probe(dev: &pdev->dev, err: ret, |
443 | fmt: "Failed to disable TICKs\n" ); |
444 | |
445 | data[RTC_SEC] = 0; |
446 | ret = regmap_bulk_read(map: rtc->regmap, |
447 | reg: config->rtc_alarm_secs_reg, |
448 | val: &data[config->rtc_data_start], |
449 | val_count: config->rtc_alarm_len); |
450 | if (ret < 0) |
451 | return dev_err_probe(dev: &pdev->dev, err: ret, |
452 | fmt: "Failed to read initial alarm data\n" ); |
453 | |
454 | platform_set_drvdata(pdev, data: rtc); |
455 | |
456 | rtc->rtc_dev = devm_rtc_allocate_device(dev: &pdev->dev); |
457 | if (IS_ERR(ptr: rtc->rtc_dev)) |
458 | return PTR_ERR(ptr: rtc->rtc_dev); |
459 | |
460 | rtc->rtc_dev->ops = &da9063_rtc_ops; |
461 | rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_2000; |
462 | rtc->rtc_dev->range_max = RTC_TIMESTAMP_END_2063; |
463 | |
464 | da9063_data_to_tm(data, tm: &rtc->alarm_time, rtc); |
465 | rtc->rtc_sync = false; |
466 | |
467 | if (config->rtc_data_start != RTC_SEC) { |
468 | set_bit(RTC_FEATURE_ALARM_RES_MINUTE, addr: rtc->rtc_dev->features); |
469 | /* |
470 | * TODO: some models have alarms on a minute boundary but still |
471 | * support real hardware interrupts. |
472 | */ |
473 | clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, addr: rtc->rtc_dev->features); |
474 | } |
475 | |
476 | irq_alarm = platform_get_irq_byname_optional(dev: pdev, name: "ALARM" ); |
477 | if (irq_alarm >= 0) { |
478 | ret = devm_request_threaded_irq(dev: &pdev->dev, irq: irq_alarm, NULL, |
479 | thread_fn: da9063_alarm_event, |
480 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, |
481 | devname: "ALARM" , dev_id: rtc); |
482 | if (ret) |
483 | dev_err(&pdev->dev, |
484 | "Failed to request ALARM IRQ %d: %d\n" , |
485 | irq_alarm, ret); |
486 | |
487 | ret = dev_pm_set_wake_irq(dev: &pdev->dev, irq: irq_alarm); |
488 | if (ret) |
489 | dev_warn(&pdev->dev, |
490 | "Failed to set IRQ %d as a wake IRQ: %d\n" , |
491 | irq_alarm, ret); |
492 | |
493 | device_init_wakeup(dev: &pdev->dev, enable: true); |
494 | } else if (irq_alarm != -ENXIO) { |
495 | return irq_alarm; |
496 | } else { |
497 | clear_bit(RTC_FEATURE_ALARM, addr: rtc->rtc_dev->features); |
498 | } |
499 | |
500 | return devm_rtc_register_device(rtc->rtc_dev); |
501 | } |
502 | |
503 | static struct platform_driver da9063_rtc_driver = { |
504 | .probe = da9063_rtc_probe, |
505 | .driver = { |
506 | .name = DA9063_DRVNAME_RTC, |
507 | .of_match_table = da9063_compatible_reg_id_table, |
508 | }, |
509 | }; |
510 | |
511 | module_platform_driver(da9063_rtc_driver); |
512 | |
513 | MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>" ); |
514 | MODULE_DESCRIPTION("Real time clock device driver for Dialog DA9063" ); |
515 | MODULE_LICENSE("GPL" ); |
516 | MODULE_ALIAS("platform:" DA9063_DRVNAME_RTC); |
517 | |