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, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.h b/drivers/gpu/drm/nouveau/dispnv50/disp.h
index 7cbd66849743..f3a963b0ab77 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.h
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.h
@@ -27,6 +27,17 @@ nv50_disp(struct drm_device *dev)
 	return nouveau_display(dev)->priv;
 }
 
+struct nv50_disp_interlock {
+	enum nv50_disp_interlock_type {
+		NV50_DISP_INTERLOCK_CORE = 0,
+		NV50_DISP_INTERLOCK_CURS,
+		NV50_DISP_INTERLOCK_BASE,
+		NV50_DISP_INTERLOCK_OVLY,
+		NV50_DISP_INTERLOCK__SIZE
+	} type;
+	u32 data;
+};
+
 struct nv50_chan {
 	struct nvif_object user;
 	struct nvif_device *device;