diff options
Diffstat (limited to 'include/linux/iio')
| -rw-r--r-- | include/linux/iio/backend.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h index 2b9d1aa86552..838092b0de3d 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -3,6 +3,7 @@ #define _IIO_BACKEND_H_ #include <linux/types.h> +#include <linux/iio/iio.h> struct iio_chan_spec; struct fwnode_handle; @@ -85,6 +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. + * @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. **/ @@ -119,6 +121,9 @@ 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 (*read_raw)(struct iio_backend *back, + struct iio_chan_spec const *chan, int *val, int *val2, + long mask); int (*debugfs_print_chan_status)(struct iio_backend *back, unsigned int chan, char *buf, size_t len); @@ -162,7 +167,9 @@ ssize_t iio_backend_ext_info_set(struct iio_dev *indio_dev, uintptr_t private, const char *buf, size_t len); ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t private, const struct iio_chan_spec *chan, char *buf); - +int iio_backend_read_raw(struct iio_backend *back, + struct iio_chan_spec const *chan, int *val, int *val2, + long mask); int iio_backend_extend_chan_spec(struct iio_backend *back, struct iio_chan_spec *chan); void *iio_backend_get_priv(const struct iio_backend *conv); @@ -174,6 +181,21 @@ __devm_iio_backend_get_from_fwnode_lookup(struct device *dev, int devm_iio_backend_register(struct device *dev, const struct iio_backend_info *info, void *priv); +static inline int iio_backend_read_scale(struct iio_backend *back, + struct iio_chan_spec const *chan, + int *val, int *val2) +{ + return iio_backend_read_raw(back, chan, val, val2, IIO_CHAN_INFO_SCALE); +} + +static inline int iio_backend_read_offset(struct iio_backend *back, + struct iio_chan_spec const *chan, + int *val, int *val2) +{ + return iio_backend_read_raw(back, chan, val, val2, + IIO_CHAN_INFO_OFFSET); +} + ssize_t iio_backend_debugfs_print_chan_status(struct iio_backend *back, unsigned int chan, char *buf, size_t len); |