Unverified Commit 16cbca06 authored by Arnaud Pouliquen's avatar Arnaud Pouliquen Committed by Mark Brown
Browse files

IIO: consumer: allow to set buffer sizes 



Add iio consumer API to set buffer size and watermark according
to sysfs API.

Signed-off-by: default avatarArnaud Pouliquen <arnaud.pouliquen@st.com>
Reviewed-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent eca94980

drivers/iio/buffer/industrialio-buffer-cb.c

+11 −0
Original line number Diff line number Diff line
@@ -104,6 +104,17 @@ error_free_cb_buff: 
}

EXPORT_SYMBOL_GPL(iio_channel_get_all_cb);



int iio_channel_cb_set_buffer_watermark(struct iio_cb_buffer *cb_buff,

					size_t watermark)

{

	if (!watermark)

		return -EINVAL;

	cb_buff->buffer.watermark = watermark;



	return 0;

}

EXPORT_SYMBOL_GPL(iio_channel_cb_set_buffer_watermark);



int iio_channel_start_all_cb(struct iio_cb_buffer *cb_buff)

{

	return iio_update_buffers(cb_buff->indio_dev, &cb_buff->buffer,

include/linux/iio/consumer.h

+11 −0
Original line number Diff line number Diff line
@@ -133,6 +133,17 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, 
					     int (*cb)(const void *data,

						       void *private),

					     void *private);

/**

 * iio_channel_cb_set_buffer_watermark() - set the buffer watermark.

 * @cb_buffer:		The callback buffer from whom we want the channel

 *			information.

 * @watermark: buffer watermark in bytes.

 *

 * This function allows to configure the buffer watermark.

 */

int iio_channel_cb_set_buffer_watermark(struct iio_cb_buffer *cb_buffer,

					size_t watermark);



/**

 * iio_channel_release_all_cb() - release and unregister the callback.

 * @cb_buffer:		The callback buffer that was allocated.

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