Added switching lights for corsair void

Author: Sapd

src/devices/corsair_void.c

@@ -10,6 +10,7 @@ static struct device device_void;
 static int void_send_sidetone(hid_device *device_handle, uint8_t num);
 static int void_request_battery(hid_device *device_handle);
 static int void_notification_sound(hid_device *hid_device, uint8_t soundid);
+static int void_lights(hid_device *device_handle, uint8_t on);
 
 void void_init(struct device** device)
 {
@@ -18,10 +19,11 @@ void void_init(struct device** device)
 
     strcpy(device_void.device_name, "Corsair Void");
 
-    device_void.capabilities = CAP_SIDETONE | CAP_BATTERY_STATUS | CAP_NOTIFICATION_SOUND;
+    device_void.capabilities = CAP_SIDETONE | CAP_BATTERY_STATUS | CAP_NOTIFICATION_SOUND | CAP_LIGHTS;
     device_void.send_sidetone = &void_send_sidetone;
     device_void.request_battery = &void_request_battery;
     device_void.notifcation_sound = &void_notification_sound;
+    device_void.switch_lights = &void_lights;
 
     *device = &device_void;
 }
@@ -75,3 +77,9 @@ static int void_notification_sound(hid_device* device_handle, uint8_t soundid)
 
     return hid_write(device_handle, data, 3);
 }
+
+static int void_lights(hid_device* device_handle, uint8_t on)
+{
+    unsigned char data[3] = {0xC8, on ? 0x00 : 0x01, 0x00};
+    return hid_write(device_handle, data, 3);
+}