[PATCH 05/14] iio: backend: add support for number of lanes
From: Antoniu Miclaus
Date: Thu Feb 20 2025 - 08:57:10 EST
Add iio backend support for number of lanes to be enabled.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
---
drivers/iio/industrialio-backend.c | 17 +++++++++++++++++
include/linux/iio/backend.h | 3 +++
2 files changed, 20 insertions(+)
diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c
index 99c46b79e373..64ac3c6d9eb4 100644
--- a/drivers/iio/industrialio-backend.c
+++ b/drivers/iio/industrialio-backend.c
@@ -874,6 +874,23 @@ int iio_backend_sync_status_get(struct iio_backend *back, bool *sync_en)
}
EXPORT_SYMBOL_NS_GPL(iio_backend_sync_status_get, "IIO_BACKEND");
+/**
+ * iio_backend_num_lanes_set - Number of lanes enabled.
+ * @back: Backend device
+ * @num_lanes: Number of lanes.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_num_lanes_set(struct iio_backend *back, unsigned int num_lanes)
+{
+ if (!num_lanes)
+ return -EINVAL;
+
+ return iio_backend_op_call(back, num_lanes_set, num_lanes);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_num_lanes_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 38322e808ee2..67e062cabbea 100644
--- a/include/linux/iio/backend.h
+++ b/include/linux/iio/backend.h
@@ -107,6 +107,7 @@ enum iio_backend_interface_type {
* @self_sync_enable: Enable the self sync data capture.
* @self_sync_disable: Disable the self sync data capture.
* @sync_status_get: Get the syncronization status (enabled/disabled).
+ * @num_lanes_set: Set the number of lanes enabled.
* @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 {
int (*self_sync_enable)(struct iio_backend *back);
int (*self_sync_disable)(struct iio_backend *back);
int (*sync_status_get)(struct iio_backend *back, bool *sync_en);
+ int (*num_lanes_set)(struct iio_backend *back, unsigned int num_lanes);
int (*ddr_enable)(struct iio_backend *back);
int (*ddr_disable)(struct iio_backend *back);
int (*data_stream_enable)(struct iio_backend *back);
@@ -211,6 +213,7 @@ int iio_backend_bitslip_disable(struct iio_backend *back);
int iio_backend_self_sync_enable(struct iio_backend *back);
int iio_backend_self_sync_disable(struct iio_backend *back);
int iio_backend_sync_status_get(struct iio_backend *back, bool *sync_en);
+int iio_backend_num_lanes_set(struct iio_backend *back, unsigned int num_lanes);
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);
--
2.48.1