@@ -22,6 +22,8 @@
#include <linux/kernel.h>
#include <linux/rpmsg.h>
+#include "rpmsg_internal.h"
+
/**
* rpmsg_create_ept() - create a new rpmsg_endpoint
* @rpdev: rpmsg channel device
@@ -229,3 +231,34 @@ int rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst,
return ept->ops->trysend_offchannel(ept, src, dst, data, len);
}
EXPORT_SYMBOL(rpmsg_trysend_offchannel);
+
+/*
+ * match an rpmsg channel with a channel info struct.
+ * this is used to make sure we're not creating rpmsg devices for channels
+ * that already exist.
+ */
+static int rpmsg_device_match(struct device *dev, void *data)
+{
+ struct rpmsg_channel_info *chinfo = data;
+ struct rpmsg_device *rpdev = to_rpmsg_device(dev);
+
+ if (chinfo->src != RPMSG_ADDR_ANY && chinfo->src != rpdev->src)
+ return 0;
+
+ if (chinfo->dst != RPMSG_ADDR_ANY && chinfo->dst != rpdev->dst)
+ return 0;
+
+ if (strncmp(chinfo->name, rpdev->id.name, RPMSG_NAME_SIZE))
+ return 0;
+
+ /* found a match ! */
+ return 1;
+}
+
+struct device *rpmsg_find_device(struct device *parent,
+ struct rpmsg_channel_info *chinfo)
+{
+ return device_find_child(parent, chinfo, rpmsg_device_match);
+
+}
+EXPORT_SYMBOL(rpmsg_find_device);
new file mode 100644
@@ -0,0 +1,31 @@
+/*
+ * remote processor messaging bus internals
+ *
+ * Copyright (C) 2011 Texas Instruments, Inc.
+ * Copyright (C) 2011 Google, Inc.
+ *
+ * Ohad Ben-Cohen <ohad@wizery.com>
+ * Brian Swetland <swetland@google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __RPMSG_INTERNAL_H__
+#define __RPMSG_INTERNAL_H__
+
+#include <linux/rpmsg.h>
+
+#define to_rpmsg_device(d) container_of(d, struct rpmsg_device, dev)
+#define to_rpmsg_driver(d) container_of(d, struct rpmsg_driver, drv)
+
+struct device *rpmsg_find_device(struct device *parent,
+ struct rpmsg_channel_info *chinfo);
+
+#endif
@@ -35,6 +35,8 @@
#include <linux/mutex.h>
#include <linux/of_device.h>
+#include "rpmsg_internal.h"
+
/**
* struct virtproc_info - virtual remote processor state
* @vdev: the virtio device
@@ -452,29 +454,6 @@ static void rpmsg_release_device(struct device *dev)
kfree(rpdev);
}
-/*
- * match an rpmsg channel with a channel info struct.
- * this is used to make sure we're not creating rpmsg devices for channels
- * that already exist.
- */
-static int rpmsg_device_match(struct device *dev, void *data)
-{
- struct rpmsg_channel_info *chinfo = data;
- struct rpmsg_device *rpdev = to_rpmsg_device(dev);
-
- if (chinfo->src != RPMSG_ADDR_ANY && chinfo->src != rpdev->src)
- return 0;
-
- if (chinfo->dst != RPMSG_ADDR_ANY && chinfo->dst != rpdev->dst)
- return 0;
-
- if (strncmp(chinfo->name, rpdev->id.name, RPMSG_NAME_SIZE))
- return 0;
-
- /* found a match ! */
- return 1;
-}
-
static const struct rpmsg_device_ops virtio_rpmsg_ops = {
.create_ept = virtio_rpmsg_create_ept,
.announce_create = virtio_rpmsg_announce_create,
@@ -494,7 +473,7 @@ static struct rpmsg_device *rpmsg_create_channel(struct virtproc_info *vrp,
int ret;
/* make sure a similar channel doesn't already exist */
- tmp = device_find_child(dev, chinfo, rpmsg_device_match);
+ tmp = rpmsg_find_device(dev, chinfo);
if (tmp) {
/* decrement the matched device's refcount back */
put_device(tmp);
@@ -547,7 +526,7 @@ static int rpmsg_destroy_channel(struct virtproc_info *vrp,
struct virtio_device *vdev = vrp->vdev;
struct device *dev;
- dev = device_find_child(&vdev->dev, chinfo, rpmsg_device_match);
+ dev = rpmsg_find_device(&vdev->dev, chinfo);
if (!dev)
return -EINVAL;
Extract and move the helper function for finding rpmsg child devices to the core. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- Changes since v1: - Extracted this from the big move to rpmsg_core.c in v1 drivers/rpmsg/rpmsg_core.c | 33 +++++++++++++++++++++++++++++++++ drivers/rpmsg/rpmsg_internal.h | 31 +++++++++++++++++++++++++++++++ drivers/rpmsg/virtio_rpmsg_bus.c | 29 ++++------------------------- 3 files changed, 68 insertions(+), 25 deletions(-) create mode 100644 drivers/rpmsg/rpmsg_internal.h