8d05ffd2b8
The GPIO core provides a handy GPIO_LOOKUP() macro to populate a struct gpiod_lookup array without having to spell out attribute names (but still avoid breakage when attributes within the struct are rearranged or added). The axp288_adc.c driver uses a similar macro to populate a struct iio_map array. Make it available to others. Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*
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* Industrial I/O in kernel access map definitions for board files.
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*
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* Copyright (c) 2011 Jonathan Cameron
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#ifndef __LINUX_IIO_MACHINE_H__
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#define __LINUX_IIO_MACHINE_H__
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/**
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* struct iio_map - description of link between consumer and device channels
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* @adc_channel_label: Label used to identify the channel on the provider.
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* This is matched against the datasheet_name element
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* of struct iio_chan_spec.
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* @consumer_dev_name: Name to uniquely identify the consumer device.
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* @consumer_channel: Unique name used to identify the channel on the
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* consumer side.
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* @consumer_data: Data about the channel for use by the consumer driver.
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*/
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struct iio_map {
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const char *adc_channel_label;
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const char *consumer_dev_name;
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const char *consumer_channel;
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void *consumer_data;
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};
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#define IIO_MAP(_provider_channel, _consumer_dev_name, _consumer_channel) \
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{ \
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.adc_channel_label = _provider_channel, \
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.consumer_dev_name = _consumer_dev_name, \
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.consumer_channel = _consumer_channel, \
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}
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#endif
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