> Add iio consumer API to set buffer size and watermark according
> to sysfs API.
comments below
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxx>
> ---
> drivers/iio/buffer/industrialio-buffer-cb.c | 12 ++++++++++++
> include/linux/iio/consumer.h | 13 +++++++++++++
> 2 files changed, 25 insertions(+)
>
> diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c
> index b8f550e..43c066a 100644
> --- a/drivers/iio/buffer/industrialio-buffer-cb.c
> +++ b/drivers/iio/buffer/industrialio-buffer-cb.c
> @@ -103,6 +103,18 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
> }
> EXPORT_SYMBOL_GPL(iio_channel_get_all_cb);
>
> +int iio_channel_cb_set_buffer_params(struct iio_cb_buffer *cb_buff,
> + size_t length, size_t watermark)
> +{
> + if (!length || length < watermark)
> + return -EINVAL;
> + cb_buff->buffer.watermark = watermark;
> + cb_buff->buffer.length = length;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(iio_channel_start_all_cb);
> +
> int iio_channel_start_all_cb(struct iio_cb_buffer *cb_buff)
> {
> return iio_update_buffers(cb_buff->indio_dev, &cb_buff->buffer,
> diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h
> index cb44771..0f6e94d 100644
> --- a/include/linux/iio/consumer.h
> +++ b/include/linux/iio/consumer.h
> @@ -134,6 +134,19 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
> void *private),
> void *private);
> /**
> + * iio_channel_cb_set_buffer_size() - set the buffer length.
> + * @cb_buffer: The callback buffer from whom we want the channel
> + * information.
> + * @length: buffer length in bytes
> + * @watermark: buffer watermark in bytes
> + *
> + * This function allows to configure the buffer length. The watermark if
if -> is
> + * forced to half of the buffer.
> + */
> +int iio_channel_cb_set_buffer_params(struct iio_cb_buffer *cb_buffer,
> + size_t length, size_t watermark);
> +
> +/**
> * iio_channel_release_all_cb() - release and unregister the callback.
> * @cb_buffer: The callback buffer that was allocated.
> */
>
--
Peter Meerwald-Stadler
Mobile: +43 664 24 44 418
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