drm/nv11-: synchronise flips to vblank, unless async flip requested

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

2 files changed, 32 insertions, 4 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index 17422bc19529..7809d92183c4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -398,6 +398,11 @@ nouveau_display_create(struct drm_device *dev)
         dev->mode_config.preferred_depth = 24;
         dev->mode_config.prefer_shadow = 1;
 
+        if (nv_device(drm->device)->chipset < 0x11)
+                dev->mode_config.async_page_flip = false;
+        else
+                dev->mode_config.async_page_flip = true;
+
         drm_kms_helper_poll_init(dev);
         drm_kms_helper_poll_disable(dev);
 
@@ -579,9 +584,9 @@ fail:
 
 int
 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
-                       struct drm_pending_vblank_event *event,
-                       uint32_t page_flip_flags)
+                       struct drm_pending_vblank_event *event, u32 flags)
 {
+        const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
         struct drm_device *dev = crtc->dev;
         struct nouveau_drm *drm = nouveau_drm(dev);
         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
@@ -625,12 +630,29 @@ nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 
         /* Emit a page flip */
         if (nv_device(drm->device)->card_type >= NV_50) {
-                ret = nv50_display_flip_next(crtc, fb, chan, 0);
+                ret = nv50_display_flip_next(crtc, fb, chan, swap_interval);
                 if (ret)
                         goto fail_unreserve;
         } else {
                 struct nv04_display *dispnv04 = nv04_display(dev);
-                nouveau_bo_ref(new_bo, &dispnv04->image[nouveau_crtc(crtc)->index]);
+                int head = nouveau_crtc(crtc)->index;
+
+                if (swap_interval) {
+                        ret = RING_SPACE(chan, 8);
+                        if (ret)
+                                goto fail_unreserve;
+
+                        BEGIN_NV04(chan, NvSubImageBlit, 0x012c, 1);
+                        OUT_RING  (chan, 0);
+                        BEGIN_NV04(chan, NvSubImageBlit, 0x0134, 1);
+                        OUT_RING  (chan, head);
+                        BEGIN_NV04(chan, NvSubImageBlit, 0x0100, 1);
+                        OUT_RING  (chan, 0);
+                        BEGIN_NV04(chan, NvSubImageBlit, 0x0130, 1);
+                        OUT_RING  (chan, 0);
+                }
+
+                nouveau_bo_ref(new_bo, &dispnv04->image[head]);
         }
 
         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
diff --git a/drivers/gpu/drm/nouveau/nv04_fbcon.c b/drivers/gpu/drm/nouveau/nv04_fbcon.c
index 77dcc9c50777..8fe32bbed99a 100644
--- a/drivers/gpu/drm/nouveau/nv04_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nv04_fbcon.c
@@ -255,6 +255,12 @@ nv04_fbcon_accel_init(struct fb_info *info)
         OUT_RING(chan, NvCtxSurf2D);
         BEGIN_NV04(chan, NvSubImageBlit, 0x02fc, 1);
         OUT_RING(chan, 3);
+        if (device->chipset >= 0x11 /*XXX: oclass == 0x009f*/) {
+                BEGIN_NV04(chan, NvSubImageBlit, 0x0120, 3);
+                OUT_RING(chan, 0);
+                OUT_RING(chan, 1);
+                OUT_RING(chan, 2);
+        }
 
         BEGIN_NV04(chan, NvSubGdiRect, 0x0000, 1);
         OUT_RING(chan, NvGdiRect);