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https://github.com/torvalds/linux
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6ae141718e
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the last of the __dev* markings from the kernel from a variety of different, tiny, places. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/*
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* Remote processor messaging - sample client driver
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*
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* Copyright (C) 2011 Texas Instruments, Inc.
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* Copyright (C) 2011 Google, Inc.
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*
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* Ohad Ben-Cohen <ohad@wizery.com>
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* Brian Swetland <swetland@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/rpmsg.h>
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#define MSG "hello world!"
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#define MSG_LIMIT 100
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static void rpmsg_sample_cb(struct rpmsg_channel *rpdev, void *data, int len,
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void *priv, u32 src)
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{
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int ret;
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static int rx_count;
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dev_info(&rpdev->dev, "incoming msg %d (src: 0x%x)\n", ++rx_count, src);
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print_hex_dump(KERN_DEBUG, __func__, DUMP_PREFIX_NONE, 16, 1,
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data, len, true);
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/* samples should not live forever */
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if (rx_count >= MSG_LIMIT) {
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dev_info(&rpdev->dev, "goodbye!\n");
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return;
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}
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/* send a new message now */
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ret = rpmsg_send(rpdev, MSG, strlen(MSG));
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if (ret)
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dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);
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}
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static int rpmsg_sample_probe(struct rpmsg_channel *rpdev)
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{
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int ret;
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dev_info(&rpdev->dev, "new channel: 0x%x -> 0x%x!\n",
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rpdev->src, rpdev->dst);
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/* send a message to our remote processor */
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ret = rpmsg_send(rpdev, MSG, strlen(MSG));
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if (ret) {
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dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static void rpmsg_sample_remove(struct rpmsg_channel *rpdev)
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{
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dev_info(&rpdev->dev, "rpmsg sample client driver is removed\n");
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}
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static struct rpmsg_device_id rpmsg_driver_sample_id_table[] = {
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{ .name = "rpmsg-client-sample" },
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{ },
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};
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MODULE_DEVICE_TABLE(rpmsg, rpmsg_driver_sample_id_table);
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static struct rpmsg_driver rpmsg_sample_client = {
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.drv.name = KBUILD_MODNAME,
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.drv.owner = THIS_MODULE,
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.id_table = rpmsg_driver_sample_id_table,
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.probe = rpmsg_sample_probe,
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.callback = rpmsg_sample_cb,
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.remove = rpmsg_sample_remove,
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};
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static int __init rpmsg_client_sample_init(void)
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{
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return register_rpmsg_driver(&rpmsg_sample_client);
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}
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module_init(rpmsg_client_sample_init);
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static void __exit rpmsg_client_sample_fini(void)
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{
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unregister_rpmsg_driver(&rpmsg_sample_client);
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}
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module_exit(rpmsg_client_sample_fini);
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MODULE_DESCRIPTION("Remote processor messaging sample client driver");
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MODULE_LICENSE("GPL v2");
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