drm/nouveau/kms/nv50-: handle degamma LUT from window channels

Required to eventually support DRM colour management APIs, and to
support Volta.

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

1 files changed, 30 insertions, 14 deletions

diff --git a/drivers/gpu/drm/nouveau/dispnv50/base507c.c b/drivers/gpu/drm/nouveau/dispnv50/base507c.c
index d8d351669367..5d664d75b645 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/base507c.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/base507c.c
@@ -40,17 +40,6 @@ base507c_update(struct nv50_wndw *wndw, u32 *interlock)
 }
 
 void
-base507c_lut(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
-{
-	u32 *push;
-	if ((push = evo_wait(&wndw->wndw, 2))) {
-		evo_mthd(push, 0x00e0, 1);
-		evo_data(push, asyw->lut.enable << 30);
-		evo_kick(push, &wndw->wndw);
-	}
-}
-
-void
 base507c_image_clr(struct nv50_wndw *wndw)
 {
 	u32 *push;
@@ -86,6 +75,28 @@ base507c_image_set(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
 	}
 }
 
+void
+base507c_xlut_clr(struct nv50_wndw *wndw)
+{
+	u32 *push;
+	if ((push = evo_wait(&wndw->wndw, 2))) {
+		evo_mthd(push, 0x00e0, 1);
+		evo_data(push, 0x00000000);
+		evo_kick(push, &wndw->wndw);
+	}
+}
+
+void
+base507c_xlut_set(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
+{
+	u32 *push;
+	if ((push = evo_wait(&wndw->wndw, 2))) {
+		evo_mthd(push, 0x00e0, 1);
+		evo_data(push, 0x40000000);
+		evo_kick(push, &wndw->wndw);
+	}
+}
+
 int
 base507c_ntfy_wait_begun(struct nouveau_bo *bo, u32 offset,
 			 struct nvif_device *device)
@@ -177,14 +188,17 @@ base507c_acquire(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
 	if (ret)
 		return ret;
 
+	if (!wndw->func->ilut) {
+		if ((asyh->base.cpp != 1) ^ (fb->format->cpp[0] != 1))
+			asyh->state.color_mgmt_changed = true;
+	}
+
 	asyh->base.depth = fb->format->depth;
 	asyh->base.cpp = fb->format->cpp[0];
 	asyh->base.x = asyw->state.src.x1 >> 16;
 	asyh->base.y = asyw->state.src.y1 >> 16;
 	asyh->base.w = asyw->state.fb->width;
 	asyh->base.h = asyw->state.fb->height;
-
-	asyw->lut.enable = 1;
 	return 0;
 }
 
@@ -213,9 +227,11 @@ base507c = {
 	.ntfy_set = base507c_ntfy_set,
 	.ntfy_clr = base507c_ntfy_clr,
 	.ntfy_wait_begun = base507c_ntfy_wait_begun,
+	.olut_core = 1,
+	.xlut_set = base507c_xlut_set,
+	.xlut_clr = base507c_xlut_clr,
 	.image_set = base507c_image_set,
 	.image_clr = base507c_image_clr,
-	.lut = base507c_lut,
 	.update = base507c_update,
 };