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55 lines
1.3 KiB
55 lines
1.3 KiB
/* |
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* Set LED GPIO to Input "Trigger" |
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* |
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* Copyright 2015 Phil Elwell <[email protected]> |
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* |
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* Based on Nick Forbes's ledtrig-default-on.c. |
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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/module.h> |
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#include <linux/kernel.h> |
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#include <linux/init.h> |
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#include <linux/leds.h> |
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#include <linux/gpio.h> |
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#include "../leds.h" |
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static int input_trig_activate(struct led_classdev *led_cdev) |
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{ |
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led_cdev->flags |= SET_GPIO_INPUT; |
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led_set_brightness(led_cdev, 0); |
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return 0; |
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} |
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static void input_trig_deactivate(struct led_classdev *led_cdev) |
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{ |
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led_cdev->flags |= SET_GPIO_OUTPUT; |
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led_set_brightness(led_cdev, 0); |
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} |
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static struct led_trigger input_led_trigger = { |
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.name = "input", |
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.activate = input_trig_activate, |
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.deactivate = input_trig_deactivate, |
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}; |
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static int __init input_trig_init(void) |
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{ |
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return led_trigger_register(&input_led_trigger); |
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} |
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static void __exit input_trig_exit(void) |
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{ |
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led_trigger_unregister(&input_led_trigger); |
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} |
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module_init(input_trig_init); |
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module_exit(input_trig_exit); |
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MODULE_AUTHOR("Phil Elwell <[email protected]>"); |
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MODULE_DESCRIPTION("Set LED GPIO to Input \"trigger\""); |
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MODULE_LICENSE("GPL");
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