127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
/*
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* LED Triggers Core
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* For the HP Jornada 620/660/680/690 handhelds
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*
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* Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
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* this driver is based on leds-spitz.c by Richard Purdie.
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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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#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 <asm/hd64461.h>
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#include <asm/hp6xx.h>
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static void hp6xxled_green_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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u8 v8;
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v8 = inb(PKDR);
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if (value)
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outb(v8 & (~PKDR_LED_GREEN), PKDR);
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else
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outb(v8 | PKDR_LED_GREEN, PKDR);
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}
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static void hp6xxled_red_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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u16 v16;
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v16 = inw(HD64461_GPBDR);
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if (value)
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outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR);
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else
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outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR);
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}
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static struct led_classdev hp6xx_red_led = {
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.name = "hp6xx:red",
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.default_trigger = "hp6xx-charge",
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.brightness_set = hp6xxled_red_set,
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};
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static struct led_classdev hp6xx_green_led = {
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.name = "hp6xx:green",
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.default_trigger = "ide-disk",
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.brightness_set = hp6xxled_green_set,
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};
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#ifdef CONFIG_PM
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static int hp6xxled_suspend(struct platform_device *dev, pm_message_t state)
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{
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led_classdev_suspend(&hp6xx_red_led);
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led_classdev_suspend(&hp6xx_green_led);
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return 0;
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}
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static int hp6xxled_resume(struct platform_device *dev)
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{
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led_classdev_resume(&hp6xx_red_led);
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led_classdev_resume(&hp6xx_green_led);
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return 0;
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}
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#endif
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static int hp6xxled_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, &hp6xx_red_led);
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if (ret < 0)
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return ret;
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ret = led_classdev_register(&pdev->dev, &hp6xx_green_led);
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if (ret < 0)
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led_classdev_unregister(&hp6xx_red_led);
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return ret;
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}
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static int hp6xxled_remove(struct platform_device *pdev)
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{
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led_classdev_unregister(&hp6xx_red_led);
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led_classdev_unregister(&hp6xx_green_led);
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return 0;
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}
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/* work with hotplug and coldplug */
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MODULE_ALIAS("platform:hp6xx-led");
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static struct platform_driver hp6xxled_driver = {
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.probe = hp6xxled_probe,
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.remove = hp6xxled_remove,
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#ifdef CONFIG_PM
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.suspend = hp6xxled_suspend,
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.resume = hp6xxled_resume,
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#endif
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.driver = {
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.name = "hp6xx-led",
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.owner = THIS_MODULE,
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},
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};
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static int __init hp6xxled_init(void)
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{
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return platform_driver_register(&hp6xxled_driver);
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}
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static void __exit hp6xxled_exit(void)
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{
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platform_driver_unregister(&hp6xxled_driver);
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}
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module_init(hp6xxled_init);
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module_exit(hp6xxled_exit);
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MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
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MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
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MODULE_LICENSE("GPL");
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