[PATCH v5 2/9] iio: add enable and disable services to iio backend framework

[Olivier Moysan]

Add iio_backend_disable() and iio_backend_enable() APIs to allow
IIO backend consumer to request backend disabling and enabling.

Signed-off-by: Olivier Moysan <olivier...@foss.st.com>
Reviewed-by: Nuno Sa <nun...@analog.com>
---
drivers/iio/industrialio-backend.c | 25 ++++++++++++++++++++++++-
include/linux/iio/backend.h | 2 ++
2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c
index 72dc82a42d8f..b53904b03464 100644
--- a/drivers/iio/industrialio-backend.c
+++ b/drivers/iio/industrialio-backend.c
@@ -150,6 +150,29 @@ static void __iio_backend_disable(void *back)
iio_backend_void_op_call(back, disable);
}

+/**
+ * iio_backend_disable - Backend disable
+ * @back: Backend device
+ */
+void iio_backend_disable(struct iio_backend *back)
+{
+ __iio_backend_disable(back);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_disable, IIO_BACKEND);
+
+/**
+ * iio_backend_enable - Backend enable
+ * @back: Backend device
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_enable(struct iio_backend *back)
+{
+ return iio_backend_op_call(back, enable);
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_enable, IIO_BACKEND);
+
/**
* devm_iio_backend_enable - Device managed backend enable
* @dev: Consumer device for the backend
@@ -162,7 +185,7 @@ int devm_iio_backend_enable(struct device *dev, struct iio_backend *back)
{
int ret;

- ret = iio_backend_op_call(back, enable);
+ ret = iio_backend_enable(back);
if (ret)
return ret;

diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h
index 578e8f33d27b..84d362272fc7 100644
--- a/include/linux/iio/backend.h
+++ b/include/linux/iio/backend.h
@@ -123,6 +123,8 @@ struct iio_backend_ops {
int iio_backend_chan_enable(struct iio_backend *back, unsigned int chan);
int iio_backend_chan_disable(struct iio_backend *back, unsigned int chan);
int devm_iio_backend_enable(struct device *dev, struct iio_backend *back);
+int iio_backend_enable(struct iio_backend *back);
+void iio_backend_disable(struct iio_backend *back);
int iio_backend_data_format_set(struct iio_backend *back, unsigned int chan,
const struct iio_backend_data_fmt *data);
int iio_backend_data_source_set(struct iio_backend *back, unsigned int chan,
--
2.25.1

[Olivier Moysan]

index 18b20426c25e..25fce30f08d8 100644