diff options
Diffstat (limited to 'drivers/rpmsg/rpmsg_core.c')
| -rw-r--r-- | drivers/rpmsg/rpmsg_core.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c index 5039df757127..32b550c91d9f 100644 --- a/drivers/rpmsg/rpmsg_core.c +++ b/drivers/rpmsg/rpmsg_core.c @@ -331,6 +331,25 @@ int rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst, EXPORT_SYMBOL(rpmsg_trysend_offchannel); /** + * rpmsg_set_flow_control() - request remote to pause/resume transmission + * @ept: the rpmsg endpoint + * @pause: pause transmission + * @dst: destination address of the endpoint + * + * Return: 0 on success and an appropriate error value on failure. + */ +int rpmsg_set_flow_control(struct rpmsg_endpoint *ept, bool pause, u32 dst) +{ + if (WARN_ON(!ept)) + return -EINVAL; + if (!ept->ops->set_flow_control) + return -EOPNOTSUPP; + + return ept->ops->set_flow_control(ept, pause, dst); +} +EXPORT_SYMBOL_GPL(rpmsg_set_flow_control); + +/** * rpmsg_get_mtu() - get maximum transmission buffer size for sending message. * @ept: the rpmsg endpoint * @@ -539,6 +558,8 @@ static int rpmsg_dev_probe(struct device *dev) rpdev->ept = ept; rpdev->src = ept->addr; + + ept->flow_cb = rpdrv->flowcontrol; } err = rpdrv->probe(rpdev); |