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rpmsg: core: Add channel creation internal API

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Add the channel creation API as a first step to be able to define the
name service announcement as a rpmsg driver independent from the RPMsg
virtio bus.

Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20201120214245.172963-6-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Arnaud Pouliquen
2020-11-20 14:42:42 -07:00
committed by Bjorn Andersson
parent 77d372989d
commit 9753e12cd3
2 changed files with 54 additions and 0 deletions
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44
drivers/rpmsg/rpmsg_core.c
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@@ -20,6 +20,50 @@
#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