1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2021-2023 Digiteq Automotive
7  * for event triggers that can be used to record events related to the video
10  * clock source as the video frames.
37 			return -EBUSY;  in trigger_read_raw()
38 		*val = mgb4_read_reg(&st->mgbdev->video, 0xA0);  in trigger_read_raw()
43 	return -EINVAL;  in trigger_read_raw()
50 	int irq = xdma_get_user_irq(st->mgbdev->xdev, 11);  in trigger_set_state()
53 		xdma_enable_user_irq(st->mgbdev->xdev, irq);  in trigger_set_state()
55 		xdma_disable_user_irq(st->mgbdev->xdev, irq);  in trigger_set_state()
89 	struct iio_dev *indio_dev = pf->indio_dev;  in trigger_handler()
96 	scan.data = mgb4_read_reg(&st->mgbdev->video, 0xA0);  in trigger_handler()
97 	mgb4_write_reg(&st->mgbdev->video, 0xA0, scan.data);  in trigger_handler()
99 	iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp);  in trigger_handler()
100 	iio_trigger_notify_done(indio_dev->trig);  in trigger_handler()
102 	mgb4_write_reg(&st->mgbdev->video, 0xB4, 1U << 11);  in trigger_handler()
112 	st->trig = iio_trigger_alloc(&st->mgbdev->pdev->dev, "%s-dev%d",  in probe_trigger()
113 				     indio_dev->name, iio_device_id(indio_dev));  in probe_trigger()
114 	if (!st->trig)  in probe_trigger()
115 		return -ENOMEM;  in probe_trigger()
118 			  "mgb4-trigger", st->trig);  in probe_trigger()
122 	st->trig->ops = &trigger_ops;  in probe_trigger()
123 	iio_trigger_set_drvdata(st->trig, indio_dev);  in probe_trigger()
124 	ret = iio_trigger_register(st->trig);  in probe_trigger()
128 	indio_dev->trig = iio_trigger_get(st->trig);  in probe_trigger()
133 	free_irq(irq, st->trig);  in probe_trigger()
135 	iio_trigger_free(st->trig);  in probe_trigger()
144 	iio_trigger_unregister(st->trig);  in remove_trigger()
145 	free_irq(irq, st->trig);  in remove_trigger()
146 	iio_trigger_free(st->trig);  in remove_trigger()
153 	struct pci_dev *pdev = mgbdev->pdev;  in mgb4_trigger_create()
154 	struct device *dev = &pdev->dev;  in mgb4_trigger_create()
161 	indio_dev->info = &trigger_info;  in mgb4_trigger_create()
162 	indio_dev->name = "mgb4";  in mgb4_trigger_create()
163 	indio_dev->modes = INDIO_DIRECT_MODE;  in mgb4_trigger_create()
164 	indio_dev->channels = trigger_channels;  in mgb4_trigger_create()
165 	indio_dev->num_channels = ARRAY_SIZE(trigger_channels);  in mgb4_trigger_create()
168 	data->mgbdev = mgbdev;  in mgb4_trigger_create()
170 	irq = xdma_get_user_irq(mgbdev->xdev, 11);  in mgb4_trigger_create()
206 	remove_trigger(indio_dev, xdma_get_user_irq(st->mgbdev->xdev, 11));  in mgb4_trigger_free()