samples/rpmsg/rpmsg_client_sample.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Remote processor messaging - sample client driver
8  * Ohad Ben-Cohen <ohad@wizery.com>
14 #include <linux/rpmsg.h>
29 	struct instance_data *idata = dev_get_drvdata(&rpdev->dev);  in rpmsg_sample_cb()
31 	dev_info(&rpdev->dev, "incoming msg %d (src: 0x%x)\n",  in rpmsg_sample_cb()
32 		 ++idata->rx_count, src);  in rpmsg_sample_cb()
38 	if (idata->rx_count >= count) {  in rpmsg_sample_cb()
39 		dev_info(&rpdev->dev, "goodbye!\n");  in rpmsg_sample_cb()
44 	ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG));  in rpmsg_sample_cb()
46 		dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);  in rpmsg_sample_cb()
56 	dev_info(&rpdev->dev, "new channel: 0x%x -> 0x%x!\n",  in rpmsg_sample_probe()
57 					rpdev->src, rpdev->dst);  in rpmsg_sample_probe()
59 	idata = devm_kzalloc(&rpdev->dev, sizeof(*idata), GFP_KERNEL);  in rpmsg_sample_probe()
61 		return -ENOMEM;  in rpmsg_sample_probe()
63 	dev_set_drvdata(&rpdev->dev, idata);  in rpmsg_sample_probe()
66 	ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG));  in rpmsg_sample_probe()
68 		dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);  in rpmsg_sample_probe()
77 	dev_info(&rpdev->dev, "rpmsg sample client driver is removed\n");  in rpmsg_sample_remove()
81 	{ .name	= "rpmsg-client-sample" },
84 MODULE_DEVICE_TABLE(rpmsg, rpmsg_driver_sample_id_table);
87 	.drv.name	= KBUILD_MODNAME,