2 * TI PWM Subsystem driver
4 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
18 #include <linux/module.h>
19 #include <linux/platform_device.h>
21 #include <linux/err.h>
22 #include <linux/pm_runtime.h>
23 #include <linux/of_device.h>
25 static const struct of_device_id pwmss_of_match[] = {
26 { .compatible = "ti,am33xx-pwmss" },
29 MODULE_DEVICE_TABLE(of, pwmss_of_match);
31 static int pwmss_probe(struct platform_device *pdev)
34 struct device_node *node = pdev->dev.of_node;
36 pm_runtime_enable(&pdev->dev);
37 pm_runtime_get_sync(&pdev->dev);
39 /* Populate all the child nodes here... */
40 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
42 dev_err(&pdev->dev, "no child node found\n");
47 static int pwmss_remove(struct platform_device *pdev)
49 pm_runtime_put_sync(&pdev->dev);
50 pm_runtime_disable(&pdev->dev);
54 #ifdef CONFIG_PM_SLEEP
55 static int pwmss_suspend(struct device *dev)
57 pm_runtime_put_sync(dev);
61 static int pwmss_resume(struct device *dev)
63 pm_runtime_get_sync(dev);
68 static SIMPLE_DEV_PM_OPS(pwmss_pm_ops, pwmss_suspend, pwmss_resume);
70 static struct platform_driver pwmss_driver = {
74 .of_match_table = pwmss_of_match,
77 .remove = pwmss_remove,
80 module_platform_driver(pwmss_driver);
82 MODULE_DESCRIPTION("PWM Subsystem driver");
83 MODULE_AUTHOR("Texas Instruments");
84 MODULE_LICENSE("GPL");