android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

IIO: consumer: allow to set buffer sizes

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

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Arnaud Pouliquen 2018-01-10 11:13:13 +01:00 committed by Mark Brown
parent eca949800d
commit 16cbca06fa
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/iio/buffer/industrialio-buffer-cb.c
View File

@ -104,6 +104,17 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
} }
EXPORT_SYMBOL_GPL(iio_channel_get_all_cb); 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) int iio_channel_start_all_cb(struct iio_cb_buffer *cb_buff)
{ {
return iio_update_buffers(cb_buff->indio_dev, &cb_buff->buffer, return iio_update_buffers(cb_buff->indio_dev, &cb_buff->buffer,

11
include/linux/iio/consumer.h
View File

@ -133,6 +133,17 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
int (*cb)(const void *data, int (*cb)(const void *data,
void *private), void *private),
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. * iio_channel_release_all_cb() - release and unregister the callback.
* @cb_buffer: The callback buffer that was allocated. * @cb_buffer: The callback buffer that was allocated.