1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * TI PWM Subsystem driver
4 *
5 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
6 */
7
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <linux/io.h>
11 #include <linux/err.h>
12 #include <linux/pm_runtime.h>
13 #include <linux/of_device.h>
14
15 static const struct of_device_id pwmss_of_match[] = {
16 { .compatible = "ti,am33xx-pwmss" },
17 {},
18 };
19 MODULE_DEVICE_TABLE(of, pwmss_of_match);
20
pwmss_probe(struct platform_device * pdev)21 static int pwmss_probe(struct platform_device *pdev)
22 {
23 int ret;
24 struct device_node *node = pdev->dev.of_node;
25
26 pm_runtime_enable(&pdev->dev);
27
28 /* Populate all the child nodes here... */
29 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
30 if (ret)
31 dev_err(&pdev->dev, "no child node found\n");
32
33 return ret;
34 }
35
pwmss_remove(struct platform_device * pdev)36 static int pwmss_remove(struct platform_device *pdev)
37 {
38 pm_runtime_disable(&pdev->dev);
39 return 0;
40 }
41
42 static struct platform_driver pwmss_driver = {
43 .driver = {
44 .name = "pwmss",
45 .of_match_table = pwmss_of_match,
46 },
47 .probe = pwmss_probe,
48 .remove = pwmss_remove,
49 };
50
51 module_platform_driver(pwmss_driver);
52
53 MODULE_DESCRIPTION("PWM Subsystem driver");
54 MODULE_AUTHOR("Texas Instruments");
55 MODULE_LICENSE("GPL");
56