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From: Arnaud Pouliquen <arnaud.pouliquen@st.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Ohad Ben-Cohen <ohad@wizery.com>,
	Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: <linux-remoteproc@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<arnaud.pouliquen@st.com>
Subject: [PATCH 2/9] rpmsg: core: add channel creation internal API
Date: Fri, 31 Jul 2020 13:47:25 +0200
Message-ID: <20200731114732.12815-3-arnaud.pouliquen@st.com> (raw)
In-Reply-To: <20200731114732.12815-1-arnaud.pouliquen@st.com>

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.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
---
 drivers/rpmsg/rpmsg_core.c     | 37 ++++++++++++++++++++++++++++++++++
 drivers/rpmsg/rpmsg_internal.h | 12 +++++++++++
 2 files changed, 49 insertions(+)

diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index a6361cad608b..ae7da4a2e528 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -20,6 +20,43 @@
 
 #include "rpmsg_internal.h"
 
+/**
+ * rpmsg_create_channel() - create a new rpmsg channel
+ * using its name and address info.
+ * @rpdev: rpmsg driver
+ * @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) || !rpdev->ops->create_channel)
+		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 driver
+ * @chinfo: channel_info to bind
+ *
+ * Returns a pointer to the new rpmsg device on success, or NULL on error.
+ */
+int rpmsg_release_channel(struct rpmsg_device *rpdev,
+			  struct rpmsg_channel_info *chinfo)
+{
+	if (WARN_ON(!rpdev) || !rpdev->ops->release_channel)
+		return 0;
+
+	return rpdev->ops->release_channel(rpdev, chinfo);
+}
+EXPORT_SYMBOL(rpmsg_release_channel);
+
 /**
  * rpmsg_create_ept() - create a new rpmsg_endpoint
  * @rpdev: rpmsg channel device
diff --git a/drivers/rpmsg/rpmsg_internal.h b/drivers/rpmsg/rpmsg_internal.h
index 3fc83cd50e98..d5ab286d0e5e 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 +31,11 @@
  * 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 +82,11 @@ 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
-- 
2.17.1


  parent reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-31 11:47 [PATCH 0/9] introduce name service announcement rpmsg driver Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 1/9] rpmsg: virtio: rename rpmsg_create_channel Arnaud Pouliquen
2020-07-31 11:47 ` Arnaud Pouliquen [this message]
2020-08-24 22:44   ` [PATCH 2/9] rpmsg: core: add channel creation internal API Mathieu Poirier
2020-07-31 11:47 ` [PATCH 3/9] rpmsg: virtio: add rpmsg channel device ops Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 4/9] rpmsg: define the name service announcement as reserved address Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 5/9] rpmsg: introduce reserved rpmsg driver for ns announcement Arnaud Pouliquen
2020-08-05  9:05   ` kernel test robot
2020-08-24 22:47   ` Mathieu Poirier
2020-08-25 11:57     ` Arnaud POULIQUEN
2020-08-25 14:36       ` Mathieu Poirier
2020-07-31 11:47 ` [PATCH 6/9] rpmsg: virtio: use rpmsg ns device for the " Arnaud Pouliquen
2020-08-24 22:48   ` Mathieu Poirier
2020-08-25 12:02     ` Arnaud POULIQUEN
2020-07-31 11:47 ` [PATCH 7/9] rpmsg: ns: add name service announcement service Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 8/9] rpmsg: virtio: use rpmsg_ns driver to manage ns announcement Arnaud Pouliquen
2020-08-25 16:54   ` Mathieu Poirier
2020-08-26  7:42     ` Arnaud POULIQUEN
2020-08-26 22:10       ` Mathieu Poirier
2020-08-27  7:03         ` Arnaud POULIQUEN
2020-07-31 11:47 ` [PATCH 9/9] rpmsg: ns: name service announcement endianness Arnaud Pouliquen
2020-08-24 23:04   ` Mathieu Poirier
2020-08-20 22:32 ` [PATCH 0/9] introduce name service announcement rpmsg driver Mathieu Poirier

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