drm: Add support for interrupt triggered driver callback with lock held to DRM core.

Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h
index 01e1f2528659..2f18329c5eb8 100644
--- a/drivers/char/drm/drmP.h
+++ b/drivers/char/drm/drmP.h
@@ -715,6 +715,8 @@ typedef struct drm_device {
         drm_vbl_sig_t vbl_sigs;         /**< signal list to send on VBLANK */
         drm_vbl_sig_t vbl_sigs2;        /**< signals to send on secondary VBLANK */
         unsigned int vbl_pending;
+        spinlock_t tasklet_lock;        /**< For drm_locked_tasklet */
+        void (*locked_tasklet_func)(struct drm_device *dev);
 
         /*@} */
         cycles_t ctx_start;
@@ -966,6 +968,7 @@ extern int drm_wait_vblank(struct inode *inode, struct file *filp,
                            unsigned int cmd, unsigned long arg);
 extern int drm_vblank_wait(drm_device_t * dev, unsigned int *vbl_seq);
 extern void drm_vbl_send_signals(drm_device_t * dev);
+extern void drm_locked_tasklet(drm_device_t *dev, void(*func)(drm_device_t*));
 
                                 /* AGP/GART support (drm_agpsupport.h) */
 extern drm_agp_head_t *drm_agp_init(drm_device_t * dev);