commit 8ff56e1c18d48da7c7c85e326b45be4ada30e015
Author: encrypt <encrypt@labr.xyz>
Date:   Tue Jan 5 19:40:45 2016 +0100

    first commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..98606a9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+*~
+*.symvers
+*.ko
+*.order
+*.o
+*.mod.*
+*.cmd
\ No newline at end of file
diff --git a/.tmp_versions/usbio-led.mod b/.tmp_versions/usbio-led.mod
new file mode 100644
index 0000000..6969ee9
--- /dev/null
+++ b/.tmp_versions/usbio-led.mod
@@ -0,0 +1,2 @@
+/home/marco/projects/usbio-led-lkm/usbio-led.ko
+/home/marco/projects/usbio-led-lkm/usbio-led.o
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..47c1974
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,16 @@
+obj-m := usbio-led.o
+KDIR  := /lib/modules/$(shell uname -r)/build
+PWD   := $(shell pwd)
+DEPMOD:=$(shell which depmod)
+# possible bug: maybe this will work only on debian based systems
+SYSMAP:= /boot/System.map-$(shell uname -r)
+
+default:
+	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
+
+install:
+	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules_install
+	$(DEPMOD) -ae -F $(SYSMAP)
+
+clean:
+	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) clean
diff --git a/usbio-led.c b/usbio-led.c
new file mode 100644
index 0000000..7e382f1
--- /dev/null
+++ b/usbio-led.c
@@ -0,0 +1,92 @@
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/slab.h>
+
+#define USBIO_VENDOR_ID  0x04d8
+#define USBIO_PRODUCT_ID 0x003f
+
+struct usbio_led {
+  struct usb_device *udev;
+  struct led_classdev ldev;
+  struct mutex lock;
+};
+
+static void usbio_led_set(struct led_classdev *ldev, enum led_brightness brightness) {
+  u8 data[] = { 0x80 };
+  struct usbio_led *led = container_of(ldev, struct usbio_led, ldev);
+  int actual_len = 1;
+  mutex_lock(&led->lock);
+  usb_interrupt_msg(led->udev,
+		    usb_sndintpipe(led->udev, 1),
+		    data, sizeof(data), &actual_len, USB_CTRL_SET_TIMEOUT);
+  mutex_unlock(&led->lock);
+}
+
+static int usbio_led_probe(struct usb_interface *interface, const struct usb_device_id *id)
+{
+  struct usb_device *udev = interface_to_usbdev(interface);
+  struct usbio_led *led = NULL;
+  int retval = -ENOMEM;
+  led = kzalloc(sizeof(struct usbio_led), GFP_KERNEL);
+  if(led == NULL) {
+    dev_err(&interface->dev, "Out of memory");
+    goto error;
+  }
+  led->udev = usb_get_dev(udev);
+  usb_set_intfdata(interface, led);
+  dev_info(&interface->dev, "USBIO LED attached\n");
+  mutex_init(&led->lock);
+  led->ldev.name = "usbio_led";
+  led->ldev.max_brightness = 1;
+  led->ldev.brightness = LED_OFF;
+  led->ldev.brightness_set = usbio_led_set;
+  
+  retval = led_classdev_register(&led->udev->dev, &led->ldev);
+
+  if(retval < 0) {
+    printk("whoops");
+    goto error;
+  }
+  
+  return 0;
+    
+ error:
+  printk("errors");
+  kfree(led);
+  return retval;
+}
+
+static void usbio_led_disconnect(struct usb_interface *interface)
+{
+  struct usbio_led *led;
+  led = usb_get_intfdata(interface);
+  usb_set_intfdata(interface, NULL);
+  usb_put_dev(led->udev);
+  led_classdev_unregister(&led->ldev);
+  kfree(led);
+  dev_info(&interface->dev, "USBIO disconnected");
+}
+
+static struct usb_device_id usbio_id_table[] = {
+  { USB_DEVICE(USBIO_VENDOR_ID, USBIO_PRODUCT_ID) },
+  {}
+};
+
+MODULE_DEVICE_TABLE(usb, usbio_id_table);
+
+static struct usb_driver usbio_led_driver = {
+  .name = "usbio_led",
+  .probe = usbio_led_probe,
+  .disconnect = usbio_led_disconnect,
+  .id_table = usbio_id_table
+};
+
+module_usb_driver(usbio_led_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("encrypt <encrypt@labr.xyz>");
+MODULE_DESCRIPTION("USBIO led");