linux-kernel - [PATCH v3 6/8] rpmsg: virtio: Add rpmsg channel device ops

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Message-Id: <20201019203438.501174-7-mathieu.poirier@linaro.org>
Date:   Mon, 19 Oct 2020 14:34:36 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     ohad@...ery.com, bjorn.andersson@...aro.org
Cc:     guennadi.liakhovetski@...ux.intel.com, arnaud.pouliquen@...com,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 6/8] rpmsg: virtio: Add rpmsg channel device ops

From: Arnaud Pouliquen <arnaud.pouliquen@...com>

Implement the create and release of the RPMsg channel
for the RPMsg virtio bus.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>
---
 drivers/rpmsg/virtio_rpmsg_bus.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index bd5baa0dfcfb..e14390a81265 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -146,6 +146,8 @@ static int virtio_rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data,
 				  int len, u32 dst);
 static int virtio_rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src,
 					   u32 dst, void *data, int len);
+static struct rpmsg_device * __rpmsg_create_channel(struct virtproc_info *vrp,
+						    struct rpmsg_channel_info *chinfo);
 
 static const struct rpmsg_endpoint_ops virtio_endpoint_ops = {
 	.destroy_ept = virtio_rpmsg_destroy_ept,
@@ -250,6 +252,24 @@ static struct rpmsg_endpoint *__rpmsg_create_ept(struct virtproc_info *vrp,
 	return NULL;
 }
 
+static struct rpmsg_device *virtio_rpmsg_create_channel(struct rpmsg_device *rpdev,
+							struct rpmsg_channel_info *chinfo)
+{
+	struct virtio_rpmsg_channel *vch = to_virtio_rpmsg_channel(rpdev);
+	struct virtproc_info *vrp = vch->vrp;
+
+	return __rpmsg_create_channel(vrp, chinfo);
+}
+
+static int virtio_rpmsg_release_channel(struct rpmsg_device *rpdev,
+					struct rpmsg_channel_info *chinfo)
+{
+	struct virtio_rpmsg_channel *vch = to_virtio_rpmsg_channel(rpdev);
+	struct virtproc_info *vrp = vch->vrp;
+
+	return rpmsg_unregister_device(&vrp->vdev->dev, chinfo);
+}
+
 static struct rpmsg_endpoint *virtio_rpmsg_create_ept(struct rpmsg_device *rpdev,
 						      rpmsg_rx_cb_t cb,
 						      void *priv,
@@ -342,6 +362,8 @@ static int virtio_rpmsg_announce_destroy(struct rpmsg_device *rpdev)
 }
 
 static const struct rpmsg_device_ops virtio_rpmsg_ops = {
+	.create_channel = virtio_rpmsg_create_channel,
+	.release_channel = virtio_rpmsg_release_channel,
 	.create_ept = virtio_rpmsg_create_ept,
 	.announce_create = virtio_rpmsg_announce_create,
 	.announce_destroy = virtio_rpmsg_announce_destroy,
-- 
2.25.1