3  * PTP 1588 clock support
98 	struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);  in ptp_clock_settime()  local
100 	return  ptp->info->settime64(ptp->info, tp);  in ptp_clock_settime()
105 	struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);  in ptp_clock_gettime()  local
108 	if (ptp->info->gettimex64)  in ptp_clock_gettime()
109 		err = ptp->info->gettimex64(ptp->info, tp, NULL);  in ptp_clock_gettime()
111 		err = ptp->info->gettime64(ptp->info, tp);  in ptp_clock_gettime()
117 	struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);  in ptp_clock_adjtime()  local
121 	ops = ptp->info;  in ptp_clock_adjtime()
148 		ptp->dialed_frequency = tx->freq;  in ptp_clock_adjtime()
159 		tx->freq = ptp->dialed_frequency;  in ptp_clock_adjtime()
180 	struct ptp_clock *ptp = container_of(dev, struct ptp_clock, dev);  in ptp_clock_release()  local
182 	ptp_cleanup_pin_groups(ptp);  in ptp_clock_release()
183 	mutex_destroy(&ptp->tsevq_mux);  in ptp_clock_release()
184 	mutex_destroy(&ptp->pincfg_mux);  in ptp_clock_release()
185 	ida_simple_remove(&ptp_clocks_map, ptp->index);  in ptp_clock_release()
186 	kfree(ptp);  in ptp_clock_release()
191 	struct ptp_clock *ptp = container_of(work, struct ptp_clock,  in ptp_aux_kworker()  local
193 	struct ptp_clock_info *info = ptp->info;  in ptp_aux_kworker()
199 		kthread_queue_delayed_work(ptp->kworker, &ptp->aux_work, delay);  in ptp_aux_kworker()
207 	struct ptp_clock *ptp;  in ptp_clock_register()  local
215 	ptp = kzalloc(sizeof(struct ptp_clock), GFP_KERNEL);  in ptp_clock_register()
216 	if (ptp == NULL)  in ptp_clock_register()
225 	ptp->clock.ops = ptp_clock_ops;  in ptp_clock_register()
226 	ptp->info = info;  in ptp_clock_register()
227 	ptp->devid = MKDEV(major, index);  in ptp_clock_register()
228 	ptp->index = index;  in ptp_clock_register()
229 	spin_lock_init(&ptp->tsevq.lock);  in ptp_clock_register()
230 	mutex_init(&ptp->tsevq_mux);  in ptp_clock_register()
231 	mutex_init(&ptp->pincfg_mux);  in ptp_clock_register()
232 	init_waitqueue_head(&ptp->tsev_wq);  in ptp_clock_register()
234 	if (ptp->info->do_aux_work) {  in ptp_clock_register()
235 		kthread_init_delayed_work(&ptp->aux_work, ptp_aux_kworker);  in ptp_clock_register()
236 		ptp->kworker = kthread_create_worker(0, "ptp%d", ptp->index);  in ptp_clock_register()
237 		if (IS_ERR(ptp->kworker)) {  in ptp_clock_register()
238 			err = PTR_ERR(ptp->kworker);  in ptp_clock_register()
239 			pr_err("failed to create ptp aux_worker %d\n", err);  in ptp_clock_register()
244 	err = ptp_populate_pin_groups(ptp);  in ptp_clock_register()
252 		snprintf(pps.name, PPS_MAX_NAME_LEN, "ptp%d", index);  in ptp_clock_register()
255 		ptp->pps_source = pps_register_source(&pps, PTP_PPS_DEFAULTS);  in ptp_clock_register()
256 		if (IS_ERR(ptp->pps_source)) {  in ptp_clock_register()
257 			err = PTR_ERR(ptp->pps_source);  in ptp_clock_register()
264 	device_initialize(&ptp->dev);  in ptp_clock_register()
265 	ptp->dev.devt = ptp->devid;  in ptp_clock_register()
266 	ptp->dev.class = ptp_class;  in ptp_clock_register()
267 	ptp->dev.parent = parent;  in ptp_clock_register()
268 	ptp->dev.groups = ptp->pin_attr_groups;  in ptp_clock_register()
269 	ptp->dev.release = ptp_clock_release;  in ptp_clock_register()
270 	dev_set_drvdata(&ptp->dev, ptp);  in ptp_clock_register()
271 	dev_set_name(&ptp->dev, "ptp%d", ptp->index);  in ptp_clock_register()
274 	err = posix_clock_register(&ptp->clock, &ptp->dev);  in ptp_clock_register()
280 	return ptp;  in ptp_clock_register()
283 	if (ptp->pps_source)  in ptp_clock_register()
284 		pps_unregister_source(ptp->pps_source);  in ptp_clock_register()
286 	ptp_cleanup_pin_groups(ptp);  in ptp_clock_register()
288 	if (ptp->kworker)  in ptp_clock_register()
289 		kthread_destroy_worker(ptp->kworker);  in ptp_clock_register()
291 	mutex_destroy(&ptp->tsevq_mux);  in ptp_clock_register()
292 	mutex_destroy(&ptp->pincfg_mux);  in ptp_clock_register()
295 	kfree(ptp);  in ptp_clock_register()
301 int ptp_clock_unregister(struct ptp_clock *ptp)  in ptp_clock_unregister()  argument
303 	ptp->defunct = 1;  in ptp_clock_unregister()
304 	wake_up_interruptible(&ptp->tsev_wq);  in ptp_clock_unregister()
306 	if (ptp->kworker) {  in ptp_clock_unregister()
307 		kthread_cancel_delayed_work_sync(&ptp->aux_work);  in ptp_clock_unregister()
308 		kthread_destroy_worker(ptp->kworker);  in ptp_clock_unregister()
312 	if (ptp->pps_source)  in ptp_clock_unregister()
313 		pps_unregister_source(ptp->pps_source);  in ptp_clock_unregister()
315 	posix_clock_unregister(&ptp->clock);  in ptp_clock_unregister()
321 void ptp_clock_event(struct ptp_clock *ptp, struct ptp_clock_event *event)  in ptp_clock_event()  argument
331 		enqueue_external_timestamp(&ptp->tsevq, event);  in ptp_clock_event()
332 		wake_up_interruptible(&ptp->tsev_wq);  in ptp_clock_event()
337 		pps_event(ptp->pps_source, &evt, PTP_PPS_EVENT, NULL);  in ptp_clock_event()
341 		pps_event(ptp->pps_source, &event->pps_times,  in ptp_clock_event()
348 int ptp_clock_index(struct ptp_clock *ptp)  in ptp_clock_index()  argument
350 	return ptp->index;  in ptp_clock_index()
354 int ptp_find_pin(struct ptp_clock *ptp,  in ptp_find_pin()  argument
360 	for (i = 0; i < ptp->info->n_pins; i++) {  in ptp_find_pin()
361 		if (ptp->info->pin_config[i].func == func &&  in ptp_find_pin()
362 		    ptp->info->pin_config[i].chan == chan) {  in ptp_find_pin()
363 			pin = &ptp->info->pin_config[i];  in ptp_find_pin()
372 int ptp_find_pin_unlocked(struct ptp_clock *ptp,  in ptp_find_pin_unlocked()  argument
377 	mutex_lock(&ptp->pincfg_mux);  in ptp_find_pin_unlocked()
379 	result = ptp_find_pin(ptp, func, chan);  in ptp_find_pin_unlocked()
381 	mutex_unlock(&ptp->pincfg_mux);  in ptp_find_pin_unlocked()
387 int ptp_schedule_worker(struct ptp_clock *ptp, unsigned long delay)  in ptp_schedule_worker()  argument
389 	return kthread_mod_delayed_work(ptp->kworker, &ptp->aux_work, delay);  in ptp_schedule_worker()
393 void ptp_cancel_worker_sync(struct ptp_clock *ptp)  in ptp_cancel_worker_sync()  argument
395 	kthread_cancel_delayed_work_sync(&ptp->aux_work);  in ptp_cancel_worker_sync()
412 	ptp_class = class_create(THIS_MODULE, "ptp");  in ptp_init()
414 		pr_err("ptp: failed to allocate class\n");  in ptp_init()
418 	err = alloc_chrdev_region(&ptp_devt, 0, MINORMASK + 1, "ptp");  in ptp_init()
420 		pr_err("ptp: failed to allocate device region\n");  in ptp_init()
425 	pr_info("PTP clock support registered\n");  in ptp_init()
437 MODULE_DESCRIPTION("PTP clocks support");