From 52436b2045639f1e70c7d25aeacef1dd701fed33 Mon Sep 17 00:00:00 2001
From: Florian RICHER <florian.richer@protonmail.com>
Date: Sun, 23 Feb 2025 14:25:36 +0100
Subject: [PATCH] Add virtual led basic example

---
 06_virtual_led_basic/Makefile      |  7 +++++
 06_virtual_led_basic/test_module.c | 43 ++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 06_virtual_led_basic/Makefile
 create mode 100644 06_virtual_led_basic/test_module.c

diff --git a/06_virtual_led_basic/Makefile b/06_virtual_led_basic/Makefile
new file mode 100644
index 0000000..b909b3c
--- /dev/null
+++ b/06_virtual_led_basic/Makefile
@@ -0,0 +1,7 @@
+obj-m += test_module.o
+
+all:
+	make -C $(LINUX_MODULES_FOLDER)/build M=$(PWD) modules
+
+clean:
+	make -C $(LINUX_MODULES_FOLDER)/build M=$(PWD) clean
diff --git a/06_virtual_led_basic/test_module.c b/06_virtual_led_basic/test_module.c
new file mode 100644
index 0000000..767462e
--- /dev/null
+++ b/06_virtual_led_basic/test_module.c
@@ -0,0 +1,43 @@
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+
+static void virtual_led_set_brightness(struct led_classdev *led_cdev, enum led_brightness brightness) {
+	pr_info("Luminosité défini sur la LED %s à %d", led_cdev->name, brightness);
+}
+
+static struct led_classdev virtual_led = {
+	.name = "flo_led",
+	.brightness = 0,
+	.max_brightness = 255,
+	.brightness_set = virtual_led_set_brightness
+};
+
+static int __init virtual_led_init(void) {
+	int ret;
+	pr_info("Chargement du module pour la LED virtuelle");
+
+	ret = led_classdev_register(NULL, &virtual_led);
+	if (ret < 0) {
+		pr_err("Impossible d'ajouter la LED virtuelle");
+		return ret;
+	}
+
+	pr_info("La LED virtuelle est ajouté");
+	return 0;
+}
+
+static void __exit virtual_led_exit(void) {
+	pr_info("Déchargement du module pour la LED virtuelle");
+	led_classdev_unregister(&virtual_led);
+	pr_info("La LED virtuelle est bien retiré");
+}
+
+module_init(virtual_led_init);
+module_exit(virtual_led_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Florian RICHER");
+MODULE_DESCRIPTION("Un module noyau qui ajoute une LED virtuelle");
+MODULE_VERSION("1.0");