Added userspace part of hotplug ioctl and demo

2 files changed, 13 insertions, 0 deletions

diff --git a/libdrm/xf86drmMode.c b/libdrm/xf86drmMode.c
index 681ad417..52fef81b 100644
--- a/libdrm/xf86drmMode.c
+++ b/libdrm/xf86drmMode.c
@@ -191,6 +191,15 @@ err_allocs:
 	return r;
 }
 
+uint32_t drmModeGetHotplug(int fd)
+{
+	struct drm_mode_hotplug arg;
+	arg.counter = 0;
+
+	ioctl(fd, DRM_IOCTL_MODE_HOTPLUG, &arg);
+	return arg.counter;
+}
+
 int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
                  uint8_t bpp, uint32_t pitch, drmBO *bo, uint32_t *buf_id)
 {
diff --git a/libdrm/xf86drmMode.h b/libdrm/xf86drmMode.h
index e878c40a..7cc3ceca 100644
--- a/libdrm/xf86drmMode.h
+++ b/libdrm/xf86drmMode.h
@@ -159,6 +159,10 @@ extern void drmModeFreeOutput( drmModeOutputPtr ptr );
  */
 extern drmModeResPtr drmModeGetResources(int fd);
 
+/**
+ * Retrives the hotplug counter
+ */
+extern uint32_t drmModeGetHotplug(int fd);
 
 /*
  * FrameBuffer manipulation.