drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
2017-04-03 22:46:14 -04:00 · 2017-04-03 22:46:14 -04:00 · eef4988ab4
parent 99a97a8ba9
commit eef4988ab4
1 changed files with 2 additions and 0 deletions
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv40.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv40.c
@ -44,6 +44,8 @@ nv40_fifo_dma_engine(struct nvkm_engine *engine, u32 *reg, u32 *ctx)
 		*ctx = 0x38;
 		return true;
 	case NVKM_ENGINE_MPEG:
+		if (engine->subdev.device->chipset < 0x44)
+			return false;
 		*reg = 0x00330c;
 		*ctx = 0x54;
 		return true;