drivers/bus/ti-pwmss.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * TI PWM Subsystem driver
0004  *
0005  * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
0006  */
0007
0008 #include <linux/module.h>
0009 #include <linux/platform_device.h>
0010 #include <linux/io.h>
0011 #include <linux/err.h>
0012 #include <linux/pm_runtime.h>
0013 #include <linux/of_device.h>
0014
0015 static const struct of_device_id pwmss_of_match[] = {
0016     { .compatible   = "ti,am33xx-pwmss" },
0017     {},
0018 };
0019 MODULE_DEVICE_TABLE(of, pwmss_of_match);
0020
0021 static int pwmss_probe(struct platform_device *pdev)
0022 {
0023     int ret;
0024     struct device_node *node = pdev->dev.of_node;
0025
0026     pm_runtime_enable(&pdev->dev);
0027
0028     /* Populate all the child nodes here... */
0029     ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
0030     if (ret)
0031         dev_err(&pdev->dev, "no child node found\n");
0032
0033     return ret;
0034 }
0035
0036 static int pwmss_remove(struct platform_device *pdev)
0037 {
0038     pm_runtime_disable(&pdev->dev);
0039     return 0;
0040 }
0041
0042 static struct platform_driver pwmss_driver = {
0043     .driver = {
0044         .name   = "pwmss",
0045         .of_match_table = pwmss_of_match,
0046     },
0047     .probe  = pwmss_probe,
0048     .remove = pwmss_remove,
0049 };
0050
0051 module_platform_driver(pwmss_driver);
0052
0053 MODULE_DESCRIPTION("PWM Subsystem driver");
0054 MODULE_AUTHOR("Texas Instruments");
0055 MODULE_LICENSE("GPL");