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charset="utf-8" Add backend support for obtaining the interface type used. Signed-off-by: Antoniu Miclaus --- drivers/iio/industrialio-backend.c | 24 ++++++++++++++++++++++++ include/linux/iio/backend.h | 10 ++++++++++ 2 files changed, 34 insertions(+) diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-= backend.c index efe05be284b6..53ab6bc86a50 100644 --- a/drivers/iio/industrialio-backend.c +++ b/drivers/iio/industrialio-backend.c @@ -449,6 +449,30 @@ ssize_t iio_backend_ext_info_set(struct iio_dev *indio= _dev, uintptr_t private, } EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, IIO_BACKEND); =20 +/** + * iio_backend_interface_type_get - get the interace type used. + * @back: Backend device + * @type: Interface type + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_interface_type_get(struct iio_backend *back, + enum iio_backend_interface_type *type) +{ + int ret; + + ret =3D iio_backend_op_call(back, interface_type_get, type); + if (ret) + return ret; + + if (*type > IIO_BACKEND_INTERFACE_CMOS) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL_NS_GPL(iio_backend_interface_type_get, IIO_BACKEND); + /** * iio_backend_extend_chan_spec - Extend an IIO channel * @indio_dev: IIO device diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h index 8099759d7242..ba8ad30ac9ba 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -63,6 +63,11 @@ enum iio_backend_sample_trigger { IIO_BACKEND_SAMPLE_TRIGGER_MAX }; =20 +enum iio_backend_interface_type { + IIO_BACKEND_INTERFACE_LVDS, + IIO_BACKEND_INTERFACE_CMOS +}; + /** * struct iio_backend_ops - operations structure for an iio_backend * @enable: Enable backend. @@ -81,6 +86,7 @@ enum iio_backend_sample_trigger { * @extend_chan_spec: Extend an IIO channel. * @ext_info_set: Extended info setter. * @ext_info_get: Extended info getter. + * @interface_type_get: Interface type. **/ struct iio_backend_ops { int (*enable)(struct iio_backend *back); @@ -113,6 +119,8 @@ struct iio_backend_ops { const char *buf, size_t len); int (*ext_info_get)(struct iio_backend *back, uintptr_t private, const struct iio_chan_spec *chan, char *buf); + int (*interface_type_get)(struct iio_backend *back, + enum iio_backend_interface_type *type); }; =20 int iio_backend_chan_enable(struct iio_backend *back, unsigned int chan); @@ -142,6 +150,8 @@ ssize_t iio_backend_ext_info_set(struct iio_dev *indio_= dev, uintptr_t private, ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t priv= ate, const struct iio_chan_spec *chan, char *buf); =20 +int iio_backend_interface_type_get(struct iio_backend *back, + enum iio_backend_interface_type *type); int iio_backend_extend_chan_spec(struct iio_dev *indio_dev, struct iio_backend *back, struct iio_chan_spec *chan); --=20 2.46.0