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