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// 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");
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