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110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
/*
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* LED driver for RDC3211 boards
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*
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* Copyright 2007 Florian Fainelli <florian@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.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 <asm/io.h>
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#define LED_VAL 0x8000384C // the data ofset of gpio 0~30
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static struct platform_device *pdev;
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static void rdc3211_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
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{
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unsigned long ul_ledstat = 0xffffffff;
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unsigned long led_bit = 1 << (led_cdev->flags);
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if (brightness)
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ul_ledstat &= ~led_bit;
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else
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ul_ledstat|= led_bit;
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outl(LED_VAL, 0xcf8);
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outl(ul_ledstat, 0xcfc);
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}
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static struct led_classdev rdc3211_power_led = {
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.name = "rdc3211:power",
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.flags = 15,
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.brightness_set = rdc3211_led_set,
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};
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static struct led_classdev rdc3211_dmz_led = {
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.name = "rdc3211:dmz",
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.flags = 16,
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.brightness_set = rdc3211_led_set,
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};
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static int rdc3211_leds_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, &rdc3211_power_led);
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if (ret < 0)
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return ret;
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ret = led_classdev_register(&pdev->dev, &rdc3211_dmz_led);
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if (ret < 0)
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led_classdev_unregister(&rdc3211_power_led);
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return ret;
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}
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static int rdc3211_leds_remove(struct platform_device *pdev)
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{
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led_classdev_unregister(&rdc3211_power_led);
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led_classdev_unregister(&rdc3211_dmz_led);
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return 0;
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}
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static struct platform_driver rdc3211_leds_driver = {
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.probe = rdc3211_leds_probe,
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.remove = rdc3211_leds_remove,
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.driver = {
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.name = "rdc3211-leds",
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}
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};
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static int __init rdc3211_leds_init(void)
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{
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int ret;
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ret = platform_driver_register(&rdc3211_leds_driver);
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if (ret < 0)
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goto out;
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pdev = platform_device_register_simple("rdc3211-leds", -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(&rdc3211_leds_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 rdc3211_leds_exit(void)
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{
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platform_driver_unregister(&rdc3211_leds_driver);
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}
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module_init(rdc3211_leds_init);
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module_exit(rdc3211_leds_exit);
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MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
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MODULE_DESCRIPTION("RDC3211 LED driver");
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MODULE_LICENSE("GPL");
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