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5164c78898
This change adds a parameter to the {devm_}iio_triggered_buffer_setup()
functions to assign the extra sysfs buffer attributes that are typically
assigned via iio_buffer_set_attrs().
The functions also get renamed to iio_triggered_buffer_setup_ext() &
devm_iio_triggered_buffer_setup_ext().
For backwards compatibility the old {devm_}iio_triggered_buffer_setup()
functions are now macros wrap the new (renamed) functions with NULL for the
buffer attrs.
The aim is to remove iio_buffer_set_attrs(), so in the
iio_triggered_buffer_setup_ext() function the attributes are assigned
directly to 'buffer->attrs'.
When adding multiple IIO buffers per IIO device, it can be pretty
cumbersome to first allocate a set of buffers, then to dig them out of IIO
to assign extra attributes (with iio_buffer_set_attrs()).
Naturally, the best way would be to provide them at allocation time, which
is what this change does.
At this moment, buffers allocated with {devm_}iio_triggered_buffer_setup()
are the only ones in mainline IIO to call iio_buffer_set_attrs().
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200929125949.69934-4-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
31 lines
1.1 KiB
C
31 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_IIO_TRIGGERED_BUFFER_H_
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#define _LINUX_IIO_TRIGGERED_BUFFER_H_
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#include <linux/interrupt.h>
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struct attribute;
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struct iio_dev;
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struct iio_buffer_setup_ops;
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int iio_triggered_buffer_setup_ext(struct iio_dev *indio_dev,
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irqreturn_t (*h)(int irq, void *p),
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irqreturn_t (*thread)(int irq, void *p),
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const struct iio_buffer_setup_ops *setup_ops,
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const struct attribute **buffer_attrs);
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void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev);
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#define iio_triggered_buffer_setup(indio_dev, h, thread, setup_ops) \
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iio_triggered_buffer_setup_ext((indio_dev), (h), (thread), (setup_ops), NULL)
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int devm_iio_triggered_buffer_setup_ext(struct device *dev,
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struct iio_dev *indio_dev,
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irqreturn_t (*h)(int irq, void *p),
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irqreturn_t (*thread)(int irq, void *p),
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const struct iio_buffer_setup_ops *ops,
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const struct attribute **buffer_attrs);
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#define devm_iio_triggered_buffer_setup(dev, indio_dev, h, thread, setup_ops) \
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devm_iio_triggered_buffer_setup_ext((dev), (indio_dev), (h), (thread), (setup_ops), NULL)
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#endif
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