// SPDX-License-Identifier: GPL-2.0-only /* Copyright (c) 2021-2023, Stephan Gerhold <stephan@gerhold.net> */ #include <linux/module.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/rpmsg/qcom_smd.h> static int rpm_proc_probe(struct platform_device *pdev) { struct qcom_smd_edge *edge = NULL; struct device *dev = &pdev->dev; struct device_node *edge_node; int ret; edge_node = of_get_child_by_name(dev->of_node, "smd-edge"); if (edge_node) { edge = qcom_smd_register_edge(dev, edge_node); of_node_put(edge_node); if (IS_ERR(edge)) return dev_err_probe(dev, PTR_ERR(edge), "Failed to register smd-edge\n"); } ret = devm_of_platform_populate(dev); if (ret) { dev_err(dev, "Failed to populate child devices: %d\n", ret); goto err; } platform_set_drvdata(pdev, edge); return 0; err: if (edge) qcom_smd_unregister_edge(edge); return ret; } static void rpm_proc_remove(struct platform_device *pdev) { struct qcom_smd_edge *edge = platform_get_drvdata(pdev); if (edge) qcom_smd_unregister_edge(edge); } static const struct of_device_id rpm_proc_of_match[] = { { .compatible = "qcom,rpm-proc", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, rpm_proc_of_match); static struct platform_driver rpm_proc_driver = { .probe = rpm_proc_probe, .remove_new = rpm_proc_remove, .driver = { .name = "qcom-rpm-proc", .of_match_table = rpm_proc_of_match, }, }; static int __init rpm_proc_init(void) { return platform_driver_register(&rpm_proc_driver); } arch_initcall(rpm_proc_init); static void __exit rpm_proc_exit(void) { platform_driver_unregister(&rpm_proc_driver); } module_exit(rpm_proc_exit); MODULE_DESCRIPTION("Qualcomm RPM processor/subsystem driver"); MODULE_AUTHOR("Stephan Gerhold <stephan@gerhold.net>"); MODULE_LICENSE("GPL");