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 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 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