| Message ID | 1510222354-15290-11-git-send-email-arnaud.pouliquen@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, 9 Nov 2017 11:12:32 +0100 Arnaud Pouliquen <arnaud.pouliquen@st.com> wrote: > 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> > --- > V3 -> V4 changes: > - Set only the Watermark not the buffer lenght > - Rename functions to replace "params" with "watermark" > > drivers/iio/buffer/industrialio-buffer-cb.c | 11 +++++++++++ > include/linux/iio/consumer.h | 11 +++++++++++ > 2 files changed, 22 insertions(+) > > diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c > index 4847534..ea63c83 100644 > --- a/drivers/iio/buffer/industrialio-buffer-cb.c > +++ b/drivers/iio/buffer/industrialio-buffer-cb.c > @@ -104,6 +104,17 @@ 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_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, > diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h > index 5e347a9..0d94557 100644 > --- a/include/linux/iio/consumer.h > +++ b/include/linux/iio/consumer.h > @@ -134,6 +134,17 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, > 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. > */
diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c index 4847534..ea63c83 100644 --- a/drivers/iio/buffer/industrialio-buffer-cb.c +++ b/drivers/iio/buffer/industrialio-buffer-cb.c @@ -104,6 +104,17 @@ 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_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, diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 5e347a9..0d94557 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -134,6 +134,17 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, 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. */
Add iio consumer API to set buffer size and watermark according to sysfs API. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> --- V3 -> V4 changes: - Set only the Watermark not the buffer lenght - Rename functions to replace "params" with "watermark" drivers/iio/buffer/industrialio-buffer-cb.c | 11 +++++++++++ include/linux/iio/consumer.h | 11 +++++++++++ 2 files changed, 22 insertions(+)