4d404fd5c5
Break the lines which were more than 80 characters into more lines; replace SPACEs with TABs; correct ident at switch-case; change character encoding from ISO-8859-2 to UTF-8. The order of the functions in led-triggers.c changed in order the similar functions can still be together under titles "Used by LED Class", "LED Trigger Interface" and "Simple LED Tigger Interface" as was grouped before when exported with EXPORT_SYMBOL. Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
/*
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* LEDs driver for the Cobalt Raq series.
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*
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* Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <linux/leds.h>
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#include <linux/platform_device.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#define LED_WEB 0x04
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#define LED_POWER_OFF 0x08
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static void __iomem *led_port;
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static u8 led_value;
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static DEFINE_SPINLOCK(led_value_lock);
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static void raq_web_led_set(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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unsigned long flags;
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spin_lock_irqsave(&led_value_lock, flags);
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if (brightness)
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led_value |= LED_WEB;
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else
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led_value &= ~LED_WEB;
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writeb(led_value, led_port);
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spin_unlock_irqrestore(&led_value_lock, flags);
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}
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static struct led_classdev raq_web_led = {
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.name = "raq-web",
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.brightness_set = raq_web_led_set,
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};
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static void raq_power_off_led_set(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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unsigned long flags;
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spin_lock_irqsave(&led_value_lock, flags);
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if (brightness)
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led_value |= LED_POWER_OFF;
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else
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led_value &= ~LED_POWER_OFF;
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writeb(led_value, led_port);
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spin_unlock_irqrestore(&led_value_lock, flags);
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}
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static struct led_classdev raq_power_off_led = {
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.name = "raq-power-off",
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.brightness_set = raq_power_off_led_set,
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.default_trigger = "power-off",
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};
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static int __devinit cobalt_raq_led_probe(struct platform_device *pdev)
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{
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struct resource *res;
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int retval;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res)
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return -EBUSY;
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led_port = ioremap(res->start, res->end - res->start + 1);
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if (!led_port)
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return -ENOMEM;
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retval = led_classdev_register(&pdev->dev, &raq_power_off_led);
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if (retval)
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goto err_iounmap;
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retval = led_classdev_register(&pdev->dev, &raq_web_led);
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if (retval)
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goto err_unregister;
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return 0;
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err_unregister:
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led_classdev_unregister(&raq_power_off_led);
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err_iounmap:
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iounmap(led_port);
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led_port = NULL;
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return retval;
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}
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static int __devexit cobalt_raq_led_remove(struct platform_device *pdev)
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{
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led_classdev_unregister(&raq_power_off_led);
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led_classdev_unregister(&raq_web_led);
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if (led_port) {
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iounmap(led_port);
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led_port = NULL;
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}
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return 0;
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}
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static struct platform_driver cobalt_raq_led_driver = {
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.probe = cobalt_raq_led_probe,
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.remove = __devexit_p(cobalt_raq_led_remove),
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.driver = {
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.name = "cobalt-raq-leds",
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.owner = THIS_MODULE,
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},
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};
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static int __init cobalt_raq_led_init(void)
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{
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return platform_driver_register(&cobalt_raq_led_driver);
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}
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module_init(cobalt_raq_led_init);
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