50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/leds.h>
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#include <linux/module.h>
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static void virtual_led_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) {
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pr_info("Luminosité défini sur la LED %s à %d\n", led_cdev->name, brightness);
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}
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static enum led_brightness virtual_led_brightness_get(struct led_classdev *led_cdev) {
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pr_info("Luminosité lu sur la LED %s, valeur actuelle: %d\n", led_cdev->name, led_cdev->brightness);
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return led_cdev->brightness;
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}
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static struct led_classdev virtual_led = {
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.name = "flo-led:white:led-0",
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.color = LED_COLOR_ID_WHITE,
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.brightness = 0,
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.max_brightness = 255,
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.brightness_set = virtual_led_brightness_set,
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.brightness_set = virtual_led_brightness_get
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};
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static int __init virtual_led_init(void) {
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int ret;
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pr_info("Chargement du module pour la LED virtuelle\n");
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ret = led_classdev_register(NULL, &virtual_led);
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if (ret < 0) {
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pr_err("Impossible d'ajouter la LED virtuelle\n");
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return ret;
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}
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pr_info("La LED virtuelle est ajouté\n");
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return 0;
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}
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static void __exit virtual_led_exit(void) {
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pr_info("Déchargement du module pour la LED virtuelle\n");
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led_classdev_unregister(&virtual_led);
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pr_info("La LED virtuelle est bien retiré\n");
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}
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module_init(virtual_led_init);
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module_exit(virtual_led_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Florian RICHER");
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MODULE_DESCRIPTION("Un module noyau qui ajoute une LED virtuelle");
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MODULE_VERSION("1.0");
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