1 // SPDX-License-Identifier: GPL-2.0-only
10 #include <linux/iio/iio.h>
11 #include <linux/iio/buffer_impl.h>
12 #include <linux/iio/consumer.h>
30 	return cb_buff->cb(data, cb_buff->private);  in iio_buffer_cb_store_to()
37 	bitmap_free(cb_buff->buffer.scan_mask);  in iio_buffer_cb_release()
59 		return ERR_PTR(-EINVAL);  in iio_channel_get_all_cb()
64 		return ERR_PTR(-ENOMEM);  in iio_channel_get_all_cb()
66 	iio_buffer_init(&cb_buff->buffer);  in iio_channel_get_all_cb()
68 	cb_buff->private = private;  in iio_channel_get_all_cb()
69 	cb_buff->cb = cb;  in iio_channel_get_all_cb()
70 	cb_buff->buffer.access = &iio_cb_access;  in iio_channel_get_all_cb()
71 	INIT_LIST_HEAD(&cb_buff->buffer.demux_list);  in iio_channel_get_all_cb()
73 	cb_buff->channels = iio_channel_get_all(dev);  in iio_channel_get_all_cb()
74 	if (IS_ERR(cb_buff->channels)) {  in iio_channel_get_all_cb()
75 		ret = PTR_ERR(cb_buff->channels);  in iio_channel_get_all_cb()
79 	cb_buff->indio_dev = cb_buff->channels[0].indio_dev;  in iio_channel_get_all_cb()
80 	cb_buff->buffer.scan_mask = bitmap_zalloc(iio_get_masklength(cb_buff->indio_dev),  in iio_channel_get_all_cb()
82 	if (cb_buff->buffer.scan_mask == NULL) {  in iio_channel_get_all_cb()
83 		ret = -ENOMEM;  in iio_channel_get_all_cb()
86 	chan = &cb_buff->channels[0];  in iio_channel_get_all_cb()
87 	while (chan->indio_dev) {  in iio_channel_get_all_cb()
88 		if (chan->indio_dev != cb_buff->indio_dev) {  in iio_channel_get_all_cb()
89 			ret = -EINVAL;  in iio_channel_get_all_cb()
92 		set_bit(chan->channel->scan_index,  in iio_channel_get_all_cb()
93 			cb_buff->buffer.scan_mask);  in iio_channel_get_all_cb()
100 	bitmap_free(cb_buff->buffer.scan_mask);  in iio_channel_get_all_cb()
102 	iio_channel_release_all(cb_buff->channels);  in iio_channel_get_all_cb()
113 		return -EINVAL;  in iio_channel_cb_set_buffer_watermark()
114 	cb_buff->buffer.watermark = watermark;  in iio_channel_cb_set_buffer_watermark()
122 	return iio_update_buffers(cb_buff->indio_dev, &cb_buff->buffer,  in iio_channel_start_all_cb()
129 	iio_update_buffers(cb_buff->indio_dev, NULL, &cb_buff->buffer);  in iio_channel_stop_all_cb()
135 	iio_channel_release_all(cb_buff->channels);  in iio_channel_release_all_cb()
136 	iio_buffer_put(&cb_buff->buffer);  in iio_channel_release_all_cb()
143 	return cb_buffer->channels;  in iio_channel_cb_get_channels()
150 	return cb_buffer->indio_dev;  in iio_channel_cb_get_iio_dev()