55 	struct iio_trigger *trig = to_iio_trigger(dev);  in iio_trigger_read_name()  local
56 	return sprintf(buf, "%s\n", trig->name);  in iio_trigger_read_name()
111 	struct iio_trigger *trig = NULL, *iter;  in iio_trigger_find_by_name()  local
116 			trig = iter;  in iio_trigger_find_by_name()
121 	return trig;  in iio_trigger_find_by_name()
124 void iio_trigger_poll(struct iio_trigger *trig)  in iio_trigger_poll()  argument
128 	if (!atomic_read(&trig->use_count)) {  in iio_trigger_poll()
129 		atomic_set(&trig->use_count, CONFIG_IIO_CONSUMERS_PER_TRIGGER);  in iio_trigger_poll()
132 			if (trig->subirqs[i].enabled)  in iio_trigger_poll()
133 				generic_handle_irq(trig->subirq_base + i);  in iio_trigger_poll()
135 				iio_trigger_notify_done(trig);  in iio_trigger_poll()
148 void iio_trigger_poll_chained(struct iio_trigger *trig)  in iio_trigger_poll_chained()  argument
152 	if (!atomic_read(&trig->use_count)) {  in iio_trigger_poll_chained()
153 		atomic_set(&trig->use_count, CONFIG_IIO_CONSUMERS_PER_TRIGGER);  in iio_trigger_poll_chained()
156 			if (trig->subirqs[i].enabled)  in iio_trigger_poll_chained()
157 				handle_nested_irq(trig->subirq_base + i);  in iio_trigger_poll_chained()
159 				iio_trigger_notify_done(trig);  in iio_trigger_poll_chained()
165 void iio_trigger_notify_done(struct iio_trigger *trig)  in iio_trigger_notify_done()  argument
167 	if (atomic_dec_and_test(&trig->use_count) && trig->ops &&  in iio_trigger_notify_done()
168 		trig->ops->try_reenable)  in iio_trigger_notify_done()
169 		if (trig->ops->try_reenable(trig))  in iio_trigger_notify_done()
171 			iio_trigger_poll(trig);  in iio_trigger_notify_done()
176 static int iio_trigger_get_irq(struct iio_trigger *trig)  in iio_trigger_get_irq()  argument
179 	mutex_lock(&trig->pool_lock);  in iio_trigger_get_irq()
180 	ret = bitmap_find_free_region(trig->pool,  in iio_trigger_get_irq()
183 	mutex_unlock(&trig->pool_lock);  in iio_trigger_get_irq()
185 		ret += trig->subirq_base;  in iio_trigger_get_irq()
190 static void iio_trigger_put_irq(struct iio_trigger *trig, int irq)  in iio_trigger_put_irq()  argument
192 	mutex_lock(&trig->pool_lock);  in iio_trigger_put_irq()
193 	clear_bit(irq - trig->subirq_base, trig->pool);  in iio_trigger_put_irq()
194 	mutex_unlock(&trig->pool_lock);  in iio_trigger_put_irq()
204 static int iio_trigger_attach_poll_func(struct iio_trigger *trig,  in iio_trigger_attach_poll_func()  argument
209 		= bitmap_empty(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER);  in iio_trigger_attach_poll_func()
213 	pf->irq = iio_trigger_get_irq(trig);  in iio_trigger_attach_poll_func()
222 	if (trig->ops && trig->ops->set_trigger_state && notinuse) {  in iio_trigger_attach_poll_func()
223 		ret = trig->ops->set_trigger_state(trig, true);  in iio_trigger_attach_poll_func()
231 static int iio_trigger_detach_poll_func(struct iio_trigger *trig,  in iio_trigger_detach_poll_func()  argument
236 		= (bitmap_weight(trig->pool,  in iio_trigger_detach_poll_func()
239 	if (trig->ops && trig->ops->set_trigger_state && no_other_users) {  in iio_trigger_detach_poll_func()
240 		ret = trig->ops->set_trigger_state(trig, false);  in iio_trigger_detach_poll_func()
244 	iio_trigger_put_irq(trig, pf->irq);  in iio_trigger_detach_poll_func()
315 	if (indio_dev->trig)  in iio_trigger_read_current()
316 		return sprintf(buf, "%s\n", indio_dev->trig->name);  in iio_trigger_read_current()
340 	struct iio_trigger *oldtrig = indio_dev->trig;  in iio_trigger_write_current()
341 	struct iio_trigger *trig;  in iio_trigger_write_current()  local
351 	trig = iio_trigger_find_by_name(buf, len);  in iio_trigger_write_current()
352 	if (oldtrig == trig)  in iio_trigger_write_current()
355 	if (trig && indio_dev->info->validate_trigger) {  in iio_trigger_write_current()
356 		ret = indio_dev->info->validate_trigger(indio_dev, trig);  in iio_trigger_write_current()
361 	if (trig && trig->ops && trig->ops->validate_device) {  in iio_trigger_write_current()
362 		ret = trig->ops->validate_device(trig, indio_dev);  in iio_trigger_write_current()
367 	indio_dev->trig = trig;  in iio_trigger_write_current()
375 	if (indio_dev->trig) {  in iio_trigger_write_current()
376 		iio_trigger_get(indio_dev->trig);  in iio_trigger_write_current()
378 			iio_trigger_attach_poll_func(indio_dev->trig,  in iio_trigger_write_current()
401 	struct iio_trigger *trig = to_iio_trigger(device);  in iio_trig_release()  local
404 	if (trig->subirq_base) {  in iio_trig_release()
406 			irq_modify_status(trig->subirq_base + i,  in iio_trig_release()
409 			irq_set_chip(trig->subirq_base + i,  in iio_trig_release()
411 			irq_set_handler(trig->subirq_base + i,  in iio_trig_release()
415 		irq_free_descs(trig->subirq_base,  in iio_trig_release()
418 	kfree(trig->name);  in iio_trig_release()
419 	kfree(trig);  in iio_trig_release()
430 	struct iio_trigger *trig  in iio_trig_subirqmask()  local
433 	trig->subirqs[d->irq - trig->subirq_base].enabled = false;  in iio_trig_subirqmask()
439 	struct iio_trigger *trig  in iio_trig_subirqunmask()  local
442 	trig->subirqs[d->irq - trig->subirq_base].enabled = true;  in iio_trig_subirqunmask()
447 	struct iio_trigger *trig;  in viio_trigger_alloc()  local
448 	trig = kzalloc(sizeof *trig, GFP_KERNEL);  in viio_trigger_alloc()
449 	if (trig) {  in viio_trigger_alloc()
451 		trig->dev.type = &iio_trig_type;  in viio_trigger_alloc()
452 		trig->dev.bus = &iio_bus_type;  in viio_trigger_alloc()
453 		device_initialize(&trig->dev);  in viio_trigger_alloc()
455 		mutex_init(&trig->pool_lock);  in viio_trigger_alloc()
456 		trig->subirq_base  in viio_trigger_alloc()
460 		if (trig->subirq_base < 0) {  in viio_trigger_alloc()
461 			kfree(trig);  in viio_trigger_alloc()
465 		trig->name = kvasprintf(GFP_KERNEL, fmt, vargs);  in viio_trigger_alloc()
466 		if (trig->name == NULL) {  in viio_trigger_alloc()
467 			irq_free_descs(trig->subirq_base,  in viio_trigger_alloc()
469 			kfree(trig);  in viio_trigger_alloc()
472 		trig->subirq_chip.name = trig->name;  in viio_trigger_alloc()
473 		trig->subirq_chip.irq_mask = &iio_trig_subirqmask;  in viio_trigger_alloc()
474 		trig->subirq_chip.irq_unmask = &iio_trig_subirqunmask;  in viio_trigger_alloc()
476 			irq_set_chip(trig->subirq_base + i,  in viio_trigger_alloc()
477 				     &trig->subirq_chip);  in viio_trigger_alloc()
478 			irq_set_handler(trig->subirq_base + i,  in viio_trigger_alloc()
480 			irq_modify_status(trig->subirq_base + i,  in viio_trigger_alloc()
484 		get_device(&trig->dev);  in viio_trigger_alloc()
487 	return trig;  in viio_trigger_alloc()
492 	struct iio_trigger *trig;  in iio_trigger_alloc()  local
496 	trig = viio_trigger_alloc(fmt, vargs);  in iio_trigger_alloc()
499 	return trig;  in iio_trigger_alloc()
503 void iio_trigger_free(struct iio_trigger *trig)  in iio_trigger_free()  argument
505 	if (trig)  in iio_trigger_free()
506 		put_device(&trig->dev);  in iio_trigger_free()
547 	struct iio_trigger **ptr, *trig;  in devm_iio_trigger_alloc()  local
557 	trig = viio_trigger_alloc(fmt, vargs);  in devm_iio_trigger_alloc()
559 	if (trig) {  in devm_iio_trigger_alloc()
560 		*ptr = trig;  in devm_iio_trigger_alloc()
566 	return trig;  in devm_iio_trigger_alloc()
596 	if (indio_dev->trig)  in iio_device_unregister_trigger_consumer()
597 		iio_trigger_put(indio_dev->trig);  in iio_device_unregister_trigger_consumer()
602 	return iio_trigger_attach_poll_func(indio_dev->trig,  in iio_triggered_buffer_postenable()
609 	return iio_trigger_detach_poll_func(indio_dev->trig,  in iio_triggered_buffer_predisable()