Commit 2530d7d4 authored by Olivier Moysan's avatar Olivier Moysan Committed by Jonathan Cameron
Browse files

iio: add enable and disable services to iio backend framework 



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

Signed-off-by: default avatarOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: default avatarNuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240730084640.1307938-3-olivier.moysan@foss.st.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 0737158a

drivers/iio/industrialio-backend.c

+24 −1
Original line number Diff line number Diff line
@@ -291,6 +291,29 @@ 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
@@ -303,7 +326,7 @@ 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;

include/linux/iio/backend.h

+2 −0
Original line number Diff line number Diff line
@@ -144,6 +144,8 @@ struct iio_backend_info { 
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,