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path: root/drivers/rpmsg
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Diffstat (limited to 'drivers/rpmsg')
-rw-r--r--drivers/rpmsg/rpmsg_core.c44
-rw-r--r--drivers/rpmsg/rpmsg_internal.h10
2 files changed, 54 insertions, 0 deletions
diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index 91de940896e3..e5daee4f9373 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -21,6 +21,50 @@
#include "rpmsg_internal.h"
/**
+ * rpmsg_create_channel() - create a new rpmsg channel
+ * using its name and address info.
+ * @rpdev: rpmsg device
+ * @chinfo: channel_info to bind
+ *
+ * Returns a pointer to the new rpmsg device on success, or NULL on error.
+ */
+struct rpmsg_device *rpmsg_create_channel(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo)
+{
+ if (WARN_ON(!rpdev))
+ return NULL;
+ if (!rpdev->ops || !rpdev->ops->create_channel) {
+ dev_err(&rpdev->dev, "no create_channel ops found\n");
+ return NULL;
+ }
+
+ return rpdev->ops->create_channel(rpdev, chinfo);
+}
+EXPORT_SYMBOL(rpmsg_create_channel);
+
+/**
+ * rpmsg_release_channel() - release a rpmsg channel
+ * using its name and address info.
+ * @rpdev: rpmsg device
+ * @chinfo: channel_info to bind
+ *
+ * Returns 0 on success or an appropriate error value.
+ */
+int rpmsg_release_channel(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo)
+{
+ if (WARN_ON(!rpdev))
+ return -EINVAL;
+ if (!rpdev->ops || !rpdev->ops->release_channel) {
+ dev_err(&rpdev->dev, "no release_channel ops found\n");
+ return -ENXIO;
+ }
+
+ return rpdev->ops->release_channel(rpdev, chinfo);
+}
+EXPORT_SYMBOL(rpmsg_release_channel);
+
+/**
* rpmsg_create_ept() - create a new rpmsg_endpoint
* @rpdev: rpmsg channel device
* @cb: rx callback handler
diff --git a/drivers/rpmsg/rpmsg_internal.h b/drivers/rpmsg/rpmsg_internal.h
index 3fc83cd50e98..f1de73e0f2d6 100644
--- a/drivers/rpmsg/rpmsg_internal.h
+++ b/drivers/rpmsg/rpmsg_internal.h
@@ -20,6 +20,8 @@
/**
* struct rpmsg_device_ops - indirection table for the rpmsg_device operations
+ * @create_channel: create backend-specific channel, optional
+ * @release_channel: release backend-specific channel, optional
* @create_ept: create backend-specific endpoint, required
* @announce_create: announce presence of new channel, optional
* @announce_destroy: announce destruction of channel, optional
@@ -29,6 +31,10 @@
* advertise new channels implicitly by creating the endpoints.
*/
struct rpmsg_device_ops {
+ struct rpmsg_device *(*create_channel)(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo);
+ int (*release_channel)(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo);
struct rpmsg_endpoint *(*create_ept)(struct rpmsg_device *rpdev,
rpmsg_rx_cb_t cb, void *priv,
struct rpmsg_channel_info chinfo);
@@ -75,6 +81,10 @@ int rpmsg_unregister_device(struct device *parent,
struct device *rpmsg_find_device(struct device *parent,
struct rpmsg_channel_info *chinfo);
+struct rpmsg_device *rpmsg_create_channel(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo);
+int rpmsg_release_channel(struct rpmsg_device *rpdev,
+ struct rpmsg_channel_info *chinfo);
/**
* rpmsg_chrdev_register_device() - register chrdev device based on rpdev
* @rpdev: prepared rpdev to be used for creating endpoints