On 2/4/19 8:22 AM, Roger Quadros wrote:
> From: Jason Reeder <jreeder@xxxxxx>
>
[...]
> +/* .name matches on RPMsg Channels and causes a probe */
> +static const struct rpmsg_device_id rpmsg_driver_pru_id_table[] = {
> + { .name = "rpmsg-pru" },
> + { },
> +};
> +MODULE_DEVICE_TABLE(rpmsg, rpmsg_driver_pru_id_table);
> +
> +static struct rpmsg_driver rpmsg_pru_driver = {
> + .drv.name = KBUILD_MODNAME,
> + .id_table = rpmsg_driver_pru_id_table,
> + .probe = rpmsg_pru_probe,
> + .callback = rpmsg_pru_cb,
> + .remove = rpmsg_pru_remove,
> +};
> +
> +static int __init rpmsg_pru_init(void)
> +{
> + int ret;
> +
> + rpmsg_pru_class = class_create(THIS_MODULE, "rpmsg_pru");
> + if (IS_ERR(rpmsg_pru_class)) {
> + pr_err("Unable to create class\n");
> + ret = PTR_ERR(rpmsg_pru_class);
> + goto fail_create_class;
> + }
> +
> + ret = alloc_chrdev_region(&rpmsg_pru_devt, 0, PRU_MAX_DEVICES,
> + "rpmsg_pru");
> + if (ret) {
> + pr_err("Unable to allocate chrdev region\n");
> + goto fail_alloc_region;
> + }
> +
> + ret = register_rpmsg_driver(&rpmsg_pru_driver);
> + if (ret) {
> + pr_err("Unable to register rpmsg driver");
> + goto fail_register_rpmsg_driver;
> + }
> +
> + return 0;
> +
> +fail_register_rpmsg_driver:
> + unregister_chrdev_region(rpmsg_pru_devt, PRU_MAX_DEVICES);
> +fail_alloc_region:
> + class_destroy(rpmsg_pru_class);
> +fail_create_class:
> + return ret;
> +}
> +
> +static void __exit rpmsg_pru_exit(void)
> +{
> + unregister_rpmsg_driver(&rpmsg_pru_driver);
> + idr_destroy(&rpmsg_pru_minors);
> + mutex_destroy(&rpmsg_pru_lock);
> + class_destroy(rpmsg_pru_class);
> + unregister_chrdev_region(rpmsg_pru_devt, PRU_MAX_DEVICES);
> +}
> +
> +module_init(rpmsg_pru_init);
> +module_exit(rpmsg_pru_exit);
> +
> +MODULE_AUTHOR("Jason Reeder <jreeder@xxxxxx>");
> +MODULE_ALIAS("rpmsg:rpmsg-pru");
MODULE_ALIAS not needed, MODULE_DEVICE_TABLE will generate the alias.
Andrew
> +MODULE_DESCRIPTION("PRU Remote Processor Messaging Driver");
> +MODULE_LICENSE("GPL v2");
>
