53 	struct iio_trigger *trig = to_iio_trigger(dev);  in name_show()  local
55 	return sysfs_emit(buf, "%s\n", trig->name);  in name_show()
114 int iio_trigger_set_immutable(struct iio_dev *indio_dev, struct iio_trigger *trig)  in iio_trigger_set_immutable()  argument
118 	if (!indio_dev || !trig)  in iio_trigger_set_immutable()
125 	indio_dev->trig = iio_trigger_get(trig);  in iio_trigger_set_immutable()
158 	struct iio_trigger *trig = container_of(work, struct iio_trigger,  in iio_reenable_work_fn()  local
165 	trig->ops->reenable(trig);  in iio_reenable_work_fn()
182 static void iio_trigger_notify_done_atomic(struct iio_trigger *trig)  in iio_trigger_notify_done_atomic()  argument
184 	if (atomic_dec_and_test(&trig->use_count) && trig->ops &&  in iio_trigger_notify_done_atomic()
185 	    trig->ops->reenable)  in iio_trigger_notify_done_atomic()
186 		schedule_work(&trig->reenable_work);  in iio_trigger_notify_done_atomic()
195 void iio_trigger_poll(struct iio_trigger *trig)  in iio_trigger_poll()  argument
199 	if (!atomic_read(&trig->use_count)) {  in iio_trigger_poll()
200 		atomic_set(&trig->use_count, CONFIG_IIO_CONSUMERS_PER_TRIGGER);  in iio_trigger_poll()
203 			if (trig->subirqs[i].enabled)  in iio_trigger_poll()
204 				generic_handle_irq(trig->subirq_base + i);  in iio_trigger_poll()
206 				iio_trigger_notify_done_atomic(trig);  in iio_trigger_poll()
226 void iio_trigger_poll_nested(struct iio_trigger *trig)  in iio_trigger_poll_nested()  argument
230 	if (!atomic_read(&trig->use_count)) {  in iio_trigger_poll_nested()
231 		atomic_set(&trig->use_count, CONFIG_IIO_CONSUMERS_PER_TRIGGER);  in iio_trigger_poll_nested()
234 			if (trig->subirqs[i].enabled)  in iio_trigger_poll_nested()
235 				handle_nested_irq(trig->subirq_base + i);  in iio_trigger_poll_nested()
237 				iio_trigger_notify_done(trig);  in iio_trigger_poll_nested()
243 void iio_trigger_notify_done(struct iio_trigger *trig)  in iio_trigger_notify_done()  argument
245 	if (atomic_dec_and_test(&trig->use_count) && trig->ops &&  in iio_trigger_notify_done()
246 	    trig->ops->reenable)  in iio_trigger_notify_done()
247 		trig->ops->reenable(trig);  in iio_trigger_notify_done()
252 static int iio_trigger_get_irq(struct iio_trigger *trig)  in iio_trigger_get_irq()  argument
256 	scoped_guard(mutex, &trig->pool_lock) {  in iio_trigger_get_irq()
257 		ret = bitmap_find_free_region(trig->pool,  in iio_trigger_get_irq()
264 	return ret + trig->subirq_base;  in iio_trigger_get_irq()
267 static void iio_trigger_put_irq(struct iio_trigger *trig, int irq)  in iio_trigger_put_irq()  argument
269 	guard(mutex)(&trig->pool_lock);  in iio_trigger_put_irq()
270 	clear_bit(irq - trig->subirq_base, trig->pool);  in iio_trigger_put_irq()
280 int iio_trigger_attach_poll_func(struct iio_trigger *trig,  in iio_trigger_attach_poll_func()  argument
285 		bitmap_empty(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER);  in iio_trigger_attach_poll_func()
292 	pf->irq = iio_trigger_get_irq(trig);  in iio_trigger_attach_poll_func()
295 			trig->name, CONFIG_IIO_CONSUMERS_PER_TRIGGER);  in iio_trigger_attach_poll_func()
307 	if (trig->ops && trig->ops->set_trigger_state && notinuse) {  in iio_trigger_attach_poll_func()
308 		ret = trig->ops->set_trigger_state(trig, true);  in iio_trigger_attach_poll_func()
318 	if (!iio_validate_own_trigger(pf->indio_dev, trig))  in iio_trigger_attach_poll_func()
319 		trig->attached_own_device = true;  in iio_trigger_attach_poll_func()
326 	iio_trigger_put_irq(trig, pf->irq);  in iio_trigger_attach_poll_func()
332 int iio_trigger_detach_poll_func(struct iio_trigger *trig,  in iio_trigger_detach_poll_func()  argument
337 		bitmap_weight(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER) == 1;  in iio_trigger_detach_poll_func()
340 	if (trig->ops && trig->ops->set_trigger_state && no_other_users) {  in iio_trigger_detach_poll_func()
341 		ret = trig->ops->set_trigger_state(trig, false);  in iio_trigger_detach_poll_func()
345 	if (pf->indio_dev->dev.parent == trig->dev.parent)  in iio_trigger_detach_poll_func()
346 		trig->attached_own_device = false;  in iio_trigger_detach_poll_func()
347 	iio_trigger_put_irq(trig, pf->irq);  in iio_trigger_detach_poll_func()
419 	if (indio_dev->trig)  in current_trigger_show()
420 		return sysfs_emit(buf, "%s\n", indio_dev->trig->name);  in current_trigger_show()
444 	struct iio_trigger *oldtrig = indio_dev->trig;  in current_trigger_store()
445 	struct iio_trigger *trig;  in current_trigger_store()  local
455 	trig = iio_trigger_acquire_by_name(buf);  in current_trigger_store()
456 	if (oldtrig == trig) {  in current_trigger_store()
461 	if (trig && indio_dev->info->validate_trigger) {  in current_trigger_store()
462 		ret = indio_dev->info->validate_trigger(indio_dev, trig);  in current_trigger_store()
467 	if (trig && trig->ops && trig->ops->validate_device) {  in current_trigger_store()
468 		ret = trig->ops->validate_device(trig, indio_dev);  in current_trigger_store()
473 	indio_dev->trig = trig;  in current_trigger_store()
481 	if (indio_dev->trig) {  in current_trigger_store()
483 			iio_trigger_attach_poll_func(indio_dev->trig,  in current_trigger_store()
490 	if (trig)  in current_trigger_store()
491 		iio_trigger_put(trig);  in current_trigger_store()
509 	struct iio_trigger *trig = to_iio_trigger(device);  in iio_trig_release()  local
512 	if (trig->subirq_base) {  in iio_trig_release()
514 			irq_modify_status(trig->subirq_base + i,  in iio_trig_release()
517 			irq_set_chip(trig->subirq_base + i,  in iio_trig_release()
519 			irq_set_handler(trig->subirq_base + i,  in iio_trig_release()
523 		irq_free_descs(trig->subirq_base,  in iio_trig_release()
526 	kfree(trig->name);  in iio_trig_release()
527 	kfree(trig);  in iio_trig_release()
538 	struct iio_trigger *trig = container_of(chip, struct iio_trigger, subirq_chip);  in iio_trig_subirqmask()  local
540 	trig->subirqs[d->irq - trig->subirq_base].enabled = false;  in iio_trig_subirqmask()
546 	struct iio_trigger *trig = container_of(chip, struct iio_trigger, subirq_chip);  in iio_trig_subirqunmask()  local
548 	trig->subirqs[d->irq - trig->subirq_base].enabled = true;  in iio_trig_subirqunmask()
557 	struct iio_trigger *trig;  in viio_trigger_alloc()  local
560 	trig = kzalloc(sizeof(*trig), GFP_KERNEL);  in viio_trigger_alloc()
561 	if (!trig)  in viio_trigger_alloc()
564 	trig->dev.parent = parent;  in viio_trigger_alloc()
565 	trig->dev.type = &iio_trig_type;  in viio_trigger_alloc()
566 	trig->dev.bus = &iio_bus_type;  in viio_trigger_alloc()
567 	device_initialize(&trig->dev);  in viio_trigger_alloc()
568 	INIT_WORK(&trig->reenable_work, iio_reenable_work_fn);  in viio_trigger_alloc()
570 	mutex_init(&trig->pool_lock);  in viio_trigger_alloc()
571 	trig->subirq_base = irq_alloc_descs(-1, 0,  in viio_trigger_alloc()
574 	if (trig->subirq_base < 0)  in viio_trigger_alloc()
577 	trig->name = kvasprintf(GFP_KERNEL, fmt, vargs);  in viio_trigger_alloc()
578 	if (trig->name == NULL)  in viio_trigger_alloc()
581 	INIT_LIST_HEAD(&trig->list);  in viio_trigger_alloc()
583 	trig->owner = this_mod;  in viio_trigger_alloc()
585 	trig->subirq_chip.name = trig->name;  in viio_trigger_alloc()
586 	trig->subirq_chip.irq_mask = &iio_trig_subirqmask;  in viio_trigger_alloc()
587 	trig->subirq_chip.irq_unmask = &iio_trig_subirqunmask;  in viio_trigger_alloc()
589 		irq_set_chip(trig->subirq_base + i, &trig->subirq_chip);  in viio_trigger_alloc()
590 		irq_set_handler(trig->subirq_base + i, &handle_simple_irq);  in viio_trigger_alloc()
591 		irq_modify_status(trig->subirq_base + i,  in viio_trigger_alloc()
595 	return trig;  in viio_trigger_alloc()
598 	irq_free_descs(trig->subirq_base, CONFIG_IIO_CONSUMERS_PER_TRIGGER);  in viio_trigger_alloc()
600 	kfree(trig);  in viio_trigger_alloc()
619 	struct iio_trigger *trig;  in __iio_trigger_alloc()  local
623 	trig = viio_trigger_alloc(parent, this_mod, fmt, vargs);  in __iio_trigger_alloc()
626 	return trig;  in __iio_trigger_alloc()
630 void iio_trigger_free(struct iio_trigger *trig)  in iio_trigger_free()  argument
632 	if (trig)  in iio_trigger_free()
633 		put_device(&trig->dev);  in iio_trigger_free()
661 	struct iio_trigger **ptr, *trig;  in __devm_iio_trigger_alloc()  local
671 	trig = viio_trigger_alloc(parent, this_mod, fmt, vargs);  in __devm_iio_trigger_alloc()
673 	if (trig) {  in __devm_iio_trigger_alloc()
674 		*ptr = trig;  in __devm_iio_trigger_alloc()
680 	return trig;  in __devm_iio_trigger_alloc()
717 	return indio_dev->trig->attached_own_device;  in iio_trigger_using_own()
733 int iio_validate_own_trigger(struct iio_dev *idev, struct iio_trigger *trig)  in iio_validate_own_trigger()  argument
735 	if (idev->dev.parent != trig->dev.parent)  in iio_validate_own_trigger()
753 int iio_trigger_validate_own_device(struct iio_trigger *trig,  in iio_trigger_validate_own_device()  argument
756 	if (indio_dev->dev.parent != trig->dev.parent)  in iio_trigger_validate_own_device()
771 	if (indio_dev->trig)  in iio_device_unregister_trigger_consumer()
772 		iio_trigger_put(indio_dev->trig);  in iio_device_unregister_trigger_consumer()