Release 4.11 samples/rpmsg/rpmsg_client_sample.c

/*
 * Remote processor messaging - sample client driver
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/rpmsg.h>


#define MSG		"hello world!"

#define MSG_LIMIT	100


struct instance_data {
	
int rx_count;
};



static int rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len,
						void *priv, u32 src)
{
	int ret;
	struct instance_data *idata = dev_get_drvdata(&rpdev->dev);

	dev_info(&rpdev->dev, "incoming msg %d (src: 0x%x)\n",
		 ++idata->rx_count, src);

	print_hex_dump(KERN_DEBUG, __func__, DUMP_PREFIX_NONE, 16, 1,
		       data, len,  true);

	/* samples should not live forever */
	if (idata->rx_count >= MSG_LIMIT) {
		dev_info(&rpdev->dev, "goodbye!\n");
		return 0;
	}

	/* send a new message now */
	ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG));
	if (ret)
		dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ohad Ben-Cohen
111
81.02%
1
20.00%
Suman Anna
16
11.68%
1
20.00%
Björn Andersson
10
7.30%
3
60.00%
Total
137
100.00%
5
100.00%



static int rpmsg_sample_probe(struct rpmsg_device *rpdev)
{
	int ret;
	struct instance_data *idata;

	dev_info(&rpdev->dev, "new channel: 0x%x -> 0x%x!\n",
					rpdev->src, rpdev->dst);

	idata = devm_kzalloc(&rpdev->dev, sizeof(*idata), GFP_KERNEL);
	if (!idata)
		return -ENOMEM;

	dev_set_drvdata(&rpdev->dev, idata);

	/* send a message to our remote processor */
	ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG));
	if (ret) {
		dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);
		return ret;
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ohad Ben-Cohen
70
60.87%
1
25.00%
Suman Anna
42
36.52%
1
25.00%
Björn Andersson
3
2.61%
2
50.00%
Total
115
100.00%
4
100.00%



static void rpmsg_sample_remove(struct rpmsg_device *rpdev)
{
	dev_info(&rpdev->dev, "rpmsg sample client driver is removed\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ohad Ben-Cohen
20
95.24%
1
50.00%
Björn Andersson
1
4.76%
1
50.00%
Total
21
100.00%
2
100.00%


static struct rpmsg_device_id rpmsg_driver_sample_id_table[] = {
	{ .name	= "rpmsg-client-sample" },
	{ },
};
MODULE_DEVICE_TABLE(rpmsg, rpmsg_driver_sample_id_table);


static struct rpmsg_driver rpmsg_sample_client = {
	.drv.name	= KBUILD_MODNAME,
	.id_table	= rpmsg_driver_sample_id_table,
	.probe		= rpmsg_sample_probe,
	.callback	= rpmsg_sample_cb,
	.remove		= rpmsg_sample_remove,
};

module_rpmsg_driver(rpmsg_sample_client);

MODULE_DESCRIPTION("Remote processor messaging sample client driver");
MODULE_LICENSE("GPL v2");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Ohad Ben-Cohen
291
78.23%
1
16.67%
Suman Anna
66
17.74%
1
16.67%
Björn Andersson
14
3.76%
3
50.00%
Andrew F. Davis
1
0.27%
1
16.67%
Total
372
100.00%
6
100.00%
Directory: samples/rpmsg

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