mirror of https://gitee.com/openkylin/linux.git
128 lines
2.7 KiB
C
128 lines
2.7 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/leds.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#define DRVNAME "sead3-led"
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static struct platform_device *pdev;
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static void sead3_pled_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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pr_debug("sead3_pled_set\n");
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writel(value, (void __iomem *)0xBF000210); /* FIXME */
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}
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static void sead3_fled_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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pr_debug("sead3_fled_set\n");
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writel(value, (void __iomem *)0xBF000218); /* FIXME */
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}
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static struct led_classdev sead3_pled = {
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.name = "sead3::pled",
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.brightness_set = sead3_pled_set,
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};
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static struct led_classdev sead3_fled = {
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.name = "sead3::fled",
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.brightness_set = sead3_fled_set,
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};
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#ifdef CONFIG_PM
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static int sead3_led_suspend(struct platform_device *dev,
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pm_message_t state)
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{
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led_classdev_suspend(&sead3_pled);
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led_classdev_suspend(&sead3_fled);
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return 0;
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}
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static int sead3_led_resume(struct platform_device *dev)
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{
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led_classdev_resume(&sead3_pled);
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led_classdev_resume(&sead3_fled);
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return 0;
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}
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#else
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#define sead3_led_suspend NULL
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#define sead3_led_resume NULL
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#endif
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static int sead3_led_probe(struct platform_device *pdev)
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{
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int ret;
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ret = led_classdev_register(&pdev->dev, &sead3_pled);
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if (ret < 0)
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return ret;
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ret = led_classdev_register(&pdev->dev, &sead3_fled);
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if (ret < 0)
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led_classdev_unregister(&sead3_pled);
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return ret;
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}
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static int sead3_led_remove(struct platform_device *pdev)
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{
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led_classdev_unregister(&sead3_pled);
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led_classdev_unregister(&sead3_fled);
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return 0;
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}
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static struct platform_driver sead3_led_driver = {
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.probe = sead3_led_probe,
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.remove = sead3_led_remove,
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.suspend = sead3_led_suspend,
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.resume = sead3_led_resume,
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.driver = {
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.name = DRVNAME,
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.owner = THIS_MODULE,
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},
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};
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static int __init sead3_led_init(void)
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{
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int ret;
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ret = platform_driver_register(&sead3_led_driver);
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if (ret < 0)
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goto out;
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pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
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if (IS_ERR(pdev)) {
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ret = PTR_ERR(pdev);
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platform_driver_unregister(&sead3_led_driver);
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goto out;
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}
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out:
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return ret;
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}
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static void __exit sead3_led_exit(void)
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{
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platform_device_unregister(pdev);
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platform_driver_unregister(&sead3_led_driver);
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}
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module_init(sead3_led_init);
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module_exit(sead3_led_exit);
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MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
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MODULE_DESCRIPTION("SEAD3 LED driver");
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MODULE_LICENSE("GPL");
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