diff options
| -rw-r--r-- | drivers/iio/industrialio-backend.c | 18 | ||||
| -rw-r--r-- | include/linux/iio/backend.h | 13 |
2 files changed, 31 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c index c1eb9ef9db08..e2d46c12c15f 100644 --- a/drivers/iio/industrialio-backend.c +++ b/drivers/iio/industrialio-backend.c @@ -809,6 +809,24 @@ static int __devm_iio_backend_get(struct device *dev, struct iio_backend *back) } /** + * iio_backend_filter_type_set - Set filter type + * @back: Backend device + * @type: Filter type. + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_filter_type_set(struct iio_backend *back, + enum iio_backend_filter_type type) +{ + if (type >= IIO_BACKEND_FILTER_TYPE_MAX) + return -EINVAL; + + return iio_backend_op_call(back, filter_type_set, type); +} +EXPORT_SYMBOL_NS_GPL(iio_backend_filter_type_set, "IIO_BACKEND"); + +/** * iio_backend_ddr_enable - Enable interface DDR (Double Data Rate) mode * @back: Backend device * diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h index e59d909cb659..8a1690f21318 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -76,6 +76,14 @@ enum iio_backend_interface_type { IIO_BACKEND_INTERFACE_MAX }; +enum iio_backend_filter_type { + IIO_BACKEND_FILTER_TYPE_DISABLED, + IIO_BACKEND_FILTER_TYPE_SINC1, + IIO_BACKEND_FILTER_TYPE_SINC5, + IIO_BACKEND_FILTER_TYPE_SINC5_PLUS_COMP, + IIO_BACKEND_FILTER_TYPE_MAX +}; + /** * struct iio_backend_ops - operations structure for an iio_backend * @enable: Enable backend. @@ -101,6 +109,7 @@ enum iio_backend_interface_type { * @read_raw: Read a channel attribute from a backend device * @debugfs_print_chan_status: Print channel status into a buffer. * @debugfs_reg_access: Read or write register value of backend. + * @filter_type_set: Set filter type. * @ddr_enable: Enable interface DDR (Double Data Rate) mode. * @ddr_disable: Disable interface DDR (Double Data Rate) mode. * @data_stream_enable: Enable data stream. @@ -153,6 +162,8 @@ struct iio_backend_ops { size_t len); int (*debugfs_reg_access)(struct iio_backend *back, unsigned int reg, unsigned int writeval, unsigned int *readval); + int (*filter_type_set)(struct iio_backend *back, + enum iio_backend_filter_type type); int (*ddr_enable)(struct iio_backend *back); int (*ddr_disable)(struct iio_backend *back); int (*data_stream_enable)(struct iio_backend *back); @@ -195,6 +206,8 @@ int iio_backend_data_sample_trigger(struct iio_backend *back, int devm_iio_backend_request_buffer(struct device *dev, struct iio_backend *back, struct iio_dev *indio_dev); +int iio_backend_filter_type_set(struct iio_backend *back, + enum iio_backend_filter_type type); int iio_backend_ddr_enable(struct iio_backend *back); int iio_backend_ddr_disable(struct iio_backend *back); int iio_backend_data_stream_enable(struct iio_backend *back); |