drm/nv50-nvc0: initialise display sync channels

Also imports a couple of helper functions that'll be used to implement
page flipping in the following commits..

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nv50_display.h b/drivers/gpu/drm/nouveau/nv50_display.h
index 3f5a3d543598..c2da503a22aa 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.h
+++ b/drivers/gpu/drm/nouveau/nv50_display.h
@@ -35,10 +35,21 @@
 #include "nouveau_crtc.h"
 #include "nv50_evo.h"
 
+struct nv50_display_crtc {
+        struct nouveau_channel *sync;
+        struct {
+                struct nouveau_bo *bo;
+                u32 offset;
+                u16 value;
+        } sem;
+};
+
 struct nv50_display {
         struct nouveau_channel *master;
         struct nouveau_gpuobj *ntfy;
 
+        struct nv50_display_crtc crtc[2];
+
         struct tasklet_struct tasklet;
         struct {
                 struct dcb_entry *dcb;
@@ -62,6 +73,10 @@ void nv50_display_destroy(struct drm_device *dev);
 int nv50_crtc_blank(struct nouveau_crtc *, bool blank);
 int nv50_crtc_set_clock(struct drm_device *, int head, int pclk);
 
+int  nv50_display_flip_next(struct drm_crtc *, struct drm_framebuffer *,
+                            struct nouveau_channel *chan);
+void nv50_display_flip_stop(struct drm_crtc *);
+
 int  nv50_evo_init(struct drm_device *dev);
 void nv50_evo_fini(struct drm_device *dev);
 void nv50_evo_dmaobj_init(struct nouveau_gpuobj *, u32 memtype, u64 base,