diff options
| author | Antoniu Miclaus <antoniu.miclaus@analog.com> | 2025-05-16 11:26:22 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-06-09 07:45:34 +0100 |
| commit | 995fd6e002b0d1ac435faed68005585906467e92 (patch) | |
| tree | 7c394c78c93e1c4d8d7bd588cc79c12198ad0695 | |
| parent | dc38441890ec0c54d032395ea9c365a4307185fa (diff) | |
iio: backend: add support for data alignment
Add backend support for staring the capture synchronization.
When activated, it initates a proccess that aligns the sample's most
significant bit (MSB) based solely on the captured data, without
considering any other external signals.
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250516082630.8236-3-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/industrialio-backend.c | 23 | ||||
| -rw-r--r-- | include/linux/iio/backend.h | 3 |
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c index e2d46c12c15f..1fd71b520691 100644 --- a/drivers/iio/industrialio-backend.c +++ b/drivers/iio/industrialio-backend.c @@ -827,6 +827,29 @@ int iio_backend_filter_type_set(struct iio_backend *back, EXPORT_SYMBOL_NS_GPL(iio_backend_filter_type_set, "IIO_BACKEND"); /** + * iio_backend_interface_data_align - Perform the data alignment process. + * @back: Backend device + * @timeout_us: Timeout value in us. + * + * When activated, it initates a proccess that aligns the sample's most + * significant bit (MSB) based solely on the captured data, without + * considering any other external signals. + * + * The timeout_us value must be greater than 0. + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_interface_data_align(struct iio_backend *back, u32 timeout_us) +{ + if (!timeout_us) + return -EINVAL; + + return iio_backend_op_call(back, interface_data_align, timeout_us); +} +EXPORT_SYMBOL_NS_GPL(iio_backend_interface_data_align, "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 8a1690f21318..c579eb523466 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -110,6 +110,7 @@ enum iio_backend_filter_type { * @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. + * @interface_data_align: Perform the data alignment process. * @ddr_enable: Enable interface DDR (Double Data Rate) mode. * @ddr_disable: Disable interface DDR (Double Data Rate) mode. * @data_stream_enable: Enable data stream. @@ -164,6 +165,7 @@ struct iio_backend_ops { unsigned int writeval, unsigned int *readval); int (*filter_type_set)(struct iio_backend *back, enum iio_backend_filter_type type); + int (*interface_data_align)(struct iio_backend *back, u32 timeout_us); int (*ddr_enable)(struct iio_backend *back); int (*ddr_disable)(struct iio_backend *back); int (*data_stream_enable)(struct iio_backend *back); @@ -208,6 +210,7 @@ int devm_iio_backend_request_buffer(struct device *dev, struct iio_dev *indio_dev); int iio_backend_filter_type_set(struct iio_backend *back, enum iio_backend_filter_type type); +int iio_backend_interface_data_align(struct iio_backend *back, u32 timeout_us); 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); |