soc: fsl: dpio: add a device_link at dpaa2_io_service_register

Automatically add a device link between the actual device requesting the
dpaa2_io_service_register and the underlying dpaa2_io used. This link
will ensure that when a DPIO device, which is indirectly used by other
devices, is unbound any consumer devices will be also unbound from their
drivers.

For example, any DPNI, bound to the dpaa2-eth driver, which is using
DPIO devices will be unbound before its supplier device.

Also, add a new parameter to the dpaa2_io_service_[de]register functions
to specify the requesting device (ie the consumer).

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Horia Geanta <horia.geanta@nxp.com>
Reviewed-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/include/soc/fsl/dpaa2-io.h b/include/soc/fsl/dpaa2-io.h
index e252066d1f43..3447fd10a3e6 100644
--- a/include/soc/fsl/dpaa2-io.h
+++ b/include/soc/fsl/dpaa2-io.h
@@ -94,9 +94,11 @@ struct dpaa2_io_notification_ctx {
 int dpaa2_io_get_cpu(struct dpaa2_io *d);
 
 int dpaa2_io_service_register(struct dpaa2_io *service,
-			      struct dpaa2_io_notification_ctx *ctx);
+			      struct dpaa2_io_notification_ctx *ctx,
+			      struct device *dev);
 void dpaa2_io_service_deregister(struct dpaa2_io *service,
-				 struct dpaa2_io_notification_ctx *ctx);
+				 struct dpaa2_io_notification_ctx *ctx,
+				 struct device *dev);
 int dpaa2_io_service_rearm(struct dpaa2_io *service,
 			   struct dpaa2_io_notification_ctx *ctx);