Lines Matching refs:rtc
28 struct rtc_device *rtc = to_rtc_device(dev); in rtc_device_release() local
30 ida_simple_remove(&rtc_ida, rtc->id); in rtc_device_release()
31 kfree(rtc); in rtc_device_release()
49 static void rtc_hctosys(struct rtc_device *rtc) in rtc_hctosys() argument
57 err = rtc_read_time(rtc, &tm); in rtc_hctosys()
59 dev_err(rtc->dev.parent, in rtc_hctosys()
75 dev_info(rtc->dev.parent, "setting system clock to %ptR UTC (%lld)\n", in rtc_hctosys()
93 struct rtc_device *rtc = to_rtc_device(dev); in rtc_suspend() local
101 if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0) in rtc_suspend()
105 err = rtc_read_time(rtc, &tm); in rtc_suspend()
107 pr_debug("%s: fail to read rtc time\n", dev_name(&rtc->dev)); in rtc_suspend()
138 struct rtc_device *rtc = to_rtc_device(dev); in rtc_resume() local
148 if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0) in rtc_resume()
153 err = rtc_read_time(rtc, &tm); in rtc_resume()
155 pr_debug("%s: fail to read rtc time\n", dev_name(&rtc->dev)); in rtc_resume()
163 pr_debug("%s: time travel!\n", dev_name(&rtc->dev)); in rtc_resume()
195 struct rtc_device *rtc; in rtc_allocate_device() local
197 rtc = kzalloc(sizeof(*rtc), GFP_KERNEL); in rtc_allocate_device()
198 if (!rtc) in rtc_allocate_device()
201 device_initialize(&rtc->dev); in rtc_allocate_device()
204 rtc->set_offset_nsec = NSEC_PER_SEC / 2; in rtc_allocate_device()
206 rtc->irq_freq = 1; in rtc_allocate_device()
207 rtc->max_user_freq = 64; in rtc_allocate_device()
208 rtc->dev.class = rtc_class; in rtc_allocate_device()
209 rtc->dev.groups = rtc_get_dev_attribute_groups(); in rtc_allocate_device()
210 rtc->dev.release = rtc_device_release; in rtc_allocate_device()
212 mutex_init(&rtc->ops_lock); in rtc_allocate_device()
213 spin_lock_init(&rtc->irq_lock); in rtc_allocate_device()
214 init_waitqueue_head(&rtc->irq_queue); in rtc_allocate_device()
217 timerqueue_init_head(&rtc->timerqueue); in rtc_allocate_device()
218 INIT_WORK(&rtc->irqwork, rtc_timer_do_work); in rtc_allocate_device()
220 rtc_timer_init(&rtc->aie_timer, rtc_aie_update_irq, rtc); in rtc_allocate_device()
222 rtc_timer_init(&rtc->uie_rtctimer, rtc_uie_update_irq, rtc); in rtc_allocate_device()
224 hrtimer_init(&rtc->pie_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); in rtc_allocate_device()
225 rtc->pie_timer.function = rtc_pie_update_irq; in rtc_allocate_device()
226 rtc->pie_enabled = 0; in rtc_allocate_device()
228 return rtc; in rtc_allocate_device()
252 static void rtc_device_get_offset(struct rtc_device *rtc) in rtc_device_get_offset() argument
263 if (rtc->range_min == rtc->range_max) in rtc_device_get_offset()
266 ret = device_property_read_u32(rtc->dev.parent, "start-year", in rtc_device_get_offset()
269 rtc->start_secs = mktime64(start_year, 1, 1, 0, 0, 0); in rtc_device_get_offset()
270 rtc->set_start_time = true; in rtc_device_get_offset()
277 if (!rtc->set_start_time) in rtc_device_get_offset()
280 range_secs = rtc->range_max - rtc->range_min + 1; in rtc_device_get_offset()
308 if (rtc->start_secs > rtc->range_max || in rtc_device_get_offset()
309 rtc->start_secs + range_secs - 1 < rtc->range_min) in rtc_device_get_offset()
310 rtc->offset_secs = rtc->start_secs - rtc->range_min; in rtc_device_get_offset()
311 else if (rtc->start_secs > rtc->range_min) in rtc_device_get_offset()
312 rtc->offset_secs = range_secs; in rtc_device_get_offset()
313 else if (rtc->start_secs < rtc->range_min) in rtc_device_get_offset()
314 rtc->offset_secs = -range_secs; in rtc_device_get_offset()
316 rtc->offset_secs = 0; in rtc_device_get_offset()
324 static void rtc_device_unregister(struct rtc_device *rtc) in rtc_device_unregister() argument
326 mutex_lock(&rtc->ops_lock); in rtc_device_unregister()
331 rtc_proc_del_device(rtc); in rtc_device_unregister()
332 cdev_device_del(&rtc->char_dev, &rtc->dev); in rtc_device_unregister()
333 rtc->ops = NULL; in rtc_device_unregister()
334 mutex_unlock(&rtc->ops_lock); in rtc_device_unregister()
335 put_device(&rtc->dev); in rtc_device_unregister()
340 struct rtc_device *rtc = *(struct rtc_device **)res; in devm_rtc_release_device() local
342 rtc_nvmem_unregister(rtc); in devm_rtc_release_device()
344 if (rtc->registered) in devm_rtc_release_device()
345 rtc_device_unregister(rtc); in devm_rtc_release_device()
347 put_device(&rtc->dev); in devm_rtc_release_device()
352 struct rtc_device **ptr, *rtc; in devm_rtc_allocate_device() local
365 rtc = rtc_allocate_device(); in devm_rtc_allocate_device()
366 if (!rtc) { in devm_rtc_allocate_device()
371 *ptr = rtc; in devm_rtc_allocate_device()
374 rtc->id = id; in devm_rtc_allocate_device()
375 rtc->dev.parent = dev; in devm_rtc_allocate_device()
376 dev_set_name(&rtc->dev, "rtc%d", id); in devm_rtc_allocate_device()
378 return rtc; in devm_rtc_allocate_device()
388 int __rtc_register_device(struct module *owner, struct rtc_device *rtc) in __rtc_register_device() argument
393 if (!rtc->ops) { in __rtc_register_device()
394 dev_dbg(&rtc->dev, "no ops set\n"); in __rtc_register_device()
398 rtc->owner = owner; in __rtc_register_device()
399 rtc_device_get_offset(rtc); in __rtc_register_device()
402 err = __rtc_read_alarm(rtc, &alrm); in __rtc_register_device()
404 rtc_initialize_alarm(rtc, &alrm); in __rtc_register_device()
406 rtc_dev_prepare(rtc); in __rtc_register_device()
408 err = cdev_device_add(&rtc->char_dev, &rtc->dev); in __rtc_register_device()
410 dev_warn(rtc->dev.parent, "failed to add char device %d:%d\n", in __rtc_register_device()
411 MAJOR(rtc->dev.devt), rtc->id); in __rtc_register_device()
413 dev_dbg(rtc->dev.parent, "char device (%d:%d)\n", in __rtc_register_device()
414 MAJOR(rtc->dev.devt), rtc->id); in __rtc_register_device()
416 rtc_proc_add_device(rtc); in __rtc_register_device()
418 rtc->registered = true; in __rtc_register_device()
419 dev_info(rtc->dev.parent, "registered as %s\n", in __rtc_register_device()
420 dev_name(&rtc->dev)); in __rtc_register_device()
423 if (!strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE)) in __rtc_register_device()
424 rtc_hctosys(rtc); in __rtc_register_device()
450 struct rtc_device *rtc; in devm_rtc_device_register() local
453 rtc = devm_rtc_allocate_device(dev); in devm_rtc_device_register()
454 if (IS_ERR(rtc)) in devm_rtc_device_register()
455 return rtc; in devm_rtc_device_register()
457 rtc->ops = ops; in devm_rtc_device_register()
459 err = __rtc_register_device(owner, rtc); in devm_rtc_device_register()
463 return rtc; in devm_rtc_device_register()