fbdev: add few implementation hints

fbdev is still not ready but we add some hints so implmenting it later
will be easier.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

diff --git a/src/uterm_video_fbdev.c b/src/uterm_video_fbdev.c
index 35a81bc..59c48d1 100644 (file)
--- a/src/uterm_video_fbdev.c
+++ b/src/uterm_video_fbdev.c
@@ -25,26 +25,20 @@
 
 /*
  * FBDEV Video backend
- * This is an example how to write a backend for uterm_video that is based on
- * classic linux-fbdev. It is unfinished and should not be used, yet. However,
- * if we ever need this it should be easy to finish it.
  */
 
-#warning "uterm_video fbdev backend is unfinished"
-
 #include <errno.h>
 #include <fcntl.h>
-#include <inttypes.h>
 #include <libudev.h>
 #include <linux/fb.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/epoll.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <unistd.h>
 #include "log.h"
+#include "misc.h"
 #include "uterm.h"
 #include "uterm_internal.h"
 
@@ -442,6 +436,11 @@ static void video_destroy(struct uterm_video *video)
        }
 }
 
+static int video_use(struct uterm_video *video)
+{
+       return 0;
+}
+
 static int hotplug(struct uterm_video *video)
 {
        struct udev_device *dev;
@@ -583,6 +582,7 @@ const struct video_ops fbdev_video_ops = {
        .init = video_init,
        .destroy = video_destroy,
        .segfault = NULL, /* TODO */
+       .use = video_use,
        .poll = video_poll,
        .sleep = video_sleep,
        .wake_up = video_wake_up,