projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| af0ba001 PA |
1 | /* |
| 2 | * TI PWM Subsystem driver | |
| 3 | * | |
| 4 | * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ | |
| 5 | * | |
| 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. | |
| 10 | * | |
| 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. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/module.h> | |
| 19 | #include <linux/platform_device.h> | |
| 20 | #include <linux/io.h> | |
| 21 | #include <linux/err.h> | |
| 22 | #include <linux/pm_runtime.h> | |
| 23 | #include <linux/of_device.h> | |
| 24 | ||
| af0ba001 PA |
25 | static const struct of_device_id pwmss_of_match[] = { |
| 26 | { .compatible = "ti,am33xx-pwmss" }, | |
| 27 | {}, | |
| 28 | }; | |
| 29 | MODULE_DEVICE_TABLE(of, pwmss_of_match); | |
| 30 | ||
| 31 | static int pwmss_probe(struct platform_device *pdev) | |
| 32 | { | |
| 33 | int ret; | |
| af0ba001 PA |
34 | struct device_node *node = pdev->dev.of_node; |
| 35 | ||
| af0ba001 PA |
36 | pm_runtime_enable(&pdev->dev); |
| 37 | pm_runtime_get_sync(&pdev->dev); | |
| af0ba001 PA |
38 | |
| 39 | /* Populate all the child nodes here... */ | |
| 40 | ret = of_platform_populate(node, NULL, NULL, &pdev->dev); | |
| 41 | if (ret) | |
| 42 | dev_err(&pdev->dev, "no child node found\n"); | |
| 43 | ||
| 44 | return ret; | |
| 45 | } | |
| 46 | ||
| 47 | static int pwmss_remove(struct platform_device *pdev) | |
| 48 | { | |
| af0ba001 PA |
49 | pm_runtime_put_sync(&pdev->dev); |
| 50 | pm_runtime_disable(&pdev->dev); | |
| af0ba001 PA |
51 | return 0; |
| 52 | } | |
| 53 | ||
| c26e9bb4 | 54 | #ifdef CONFIG_PM_SLEEP |
| af0ba001 PA |
55 | static int pwmss_suspend(struct device *dev) |
| 56 | { | |
| af0ba001 PA |
57 | pm_runtime_put_sync(dev); |
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| 61 | static int pwmss_resume(struct device *dev) | |
| 62 | { | |
| af0ba001 | 63 | pm_runtime_get_sync(dev); |
| af0ba001 PA |
64 | return 0; |
| 65 | } | |
| c26e9bb4 | 66 | #endif |
| af0ba001 PA |
67 | |
| 68 | static SIMPLE_DEV_PM_OPS(pwmss_pm_ops, pwmss_suspend, pwmss_resume); | |
| 69 | ||
| 70 | static struct platform_driver pwmss_driver = { | |
| 71 | .driver = { | |
| 72 | .name = "pwmss", | |
| af0ba001 PA |
73 | .pm = &pwmss_pm_ops, |
| 74 | .of_match_table = pwmss_of_match, | |
| 75 | }, | |
| 76 | .probe = pwmss_probe, | |
| 77 | .remove = pwmss_remove, | |
| 78 | }; | |
| 79 | ||
| 80 | module_platform_driver(pwmss_driver); | |
| 81 | ||
| 82 | MODULE_DESCRIPTION("PWM Subsystem driver"); | |
| 83 | MODULE_AUTHOR("Texas Instruments"); | |
| 84 | MODULE_LICENSE("GPL"); |