drm/nouveau/kms/nv50-: simplify tracking of channel interlocks

Instead of windows returning their core channel interlock mask if they
know core has been modified, it's recorded unconditionally and used if
required when update methods are emitted.

This will be required to support Volta.

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

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/gpu/drm/nouveau/dispnv50/ovly507e.c b/drivers/gpu/drm/nouveau/dispnv50/ovly507e.c
index 1b85262bf23b..732eea39e4de 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/ovly507e.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/ovly507e.c
@@ -34,9 +34,9 @@ ovly507e_format[] = {
 	0
 };
 
-static int
+int
 ovly507e_new_(const struct nv50_wndw_func *func, const u32 *format,
-	      struct nouveau_drm *drm, int head, s32 oclass,
+	      struct nouveau_drm *drm, int head, s32 oclass, u32 interlock_data,
 	      struct nv50_wndw **pwndw)
 {
 	struct nv50_disp_overlay_channel_dma_v0 args = {
@@ -47,7 +47,9 @@ ovly507e_new_(const struct nv50_wndw_func *func, const u32 *format,
 	int ret;
 
 	ret = nv50_wndw_new_(func, drm->dev, DRM_PLANE_TYPE_OVERLAY,
-			     "ovly", head, format, BIT(head), &wndw);
+			     "ovly", head, format, BIT(head),
+			     NV50_DISP_INTERLOCK_OVLY, interlock_data,
+			     &wndw);
 	if (*pwndw = wndw, ret)
 		return ret;
 
@@ -66,5 +68,6 @@ int
 ovly507e_new(struct nouveau_drm *drm, int head, s32 oclass,
 	     struct nv50_wndw **pwndw)
 {
-	return ovly507e_new_(&ovly507e, ovly507e_format, drm, head, oclass, pwndw);
+	return ovly507e_new_(&ovly507e, ovly507e_format, drm, head, oclass,
+			     0x00000004 << (head * 8), pwndw);
 }