drm: add hotspot support for cursors.

So it looks like for virtual hw cursors on QXL we need to inform
the "hw" device what the cursor hotspot parameters are. This
makes sense if you think the host has to draw the cursor and interpret
clicks from it. However the current modesetting interface doesn't support
passing the hotspot information from userspace.

This implements a new cursor ioctl, that takes the hotspot info as well,
userspace can try calling the new interface and if it gets -ENOSYS it means
its on an older kernel and can just fallback.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 0fd007af8de9..663c3ab47752 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -339,6 +339,9 @@ struct drm_crtc_funcs {
         /* cursor controls */
         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
                           uint32_t handle, uint32_t width, uint32_t height);
+        int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,
+                           uint32_t handle, uint32_t width, uint32_t height,
+                           int32_t hot_x, int32_t hot_y);
         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
 
         /* Set gamma on the CRTC */
@@ -1018,6 +1021,8 @@ extern int drm_mode_setplane(struct drm_device *dev,
                                void *data, struct drm_file *file_priv);
 extern int drm_mode_cursor_ioctl(struct drm_device *dev,
                                 void *data, struct drm_file *file_priv);
+extern int drm_mode_cursor2_ioctl(struct drm_device *dev,
+                                void *data, struct drm_file *file_priv);
 extern int drm_mode_addfb(struct drm_device *dev,
                           void *data, struct drm_file *file_priv);
 extern int drm_mode_addfb2(struct drm_device *dev,