drm/nouveau/kms: remove a few unused struct members and fn decls

Left-overs from the past that are completely unused now.
Signed-off-by: Ben Skeggs <bskeggs@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240726043828.58966-37-bskeggs@nvidia.com

drivers/gpu/drm/nouveau/dispnv50/disp.c

@@ -239,8 +239,6 @@ nv50_dmac_create(struct nouveau_drm *drm,
 	u8 type = NVIF_MEM_COHERENT;
 	int ret;
 
-	mutex_init(&dmac->lock);
-
 	/* Pascal added support for 47-bit physical addresses, but some
 	 * parts of EVO still only accept 40-bit PAs.
 	 *
@@ -258,7 +256,6 @@ nv50_dmac_create(struct nouveau_drm *drm,
 	if (ret)
 		return ret;
 
-	dmac->ptr = dmac->_push.mem.object.map.ptr;
 	dmac->_push.wait = nv50_dmac_wait;
 	dmac->_push.kick = nv50_dmac_kick;
 	dmac->push = &dmac->_push;

drivers/gpu/drm/nouveau/dispnv50/disp.h

@@ -64,16 +64,10 @@ struct nv50_dmac {
 
 	struct nvif_push _push;
 	struct nvif_push *push;
-	u32 *ptr;
 
 	struct nvif_object sync;
 	struct nvif_object vram;
 
-	/* Protects against concurrent pushbuf access to this channel, lock is
-	 * grabbed by evo_wait (if the pushbuf reservation is successful) and
-	 * dropped again by evo_kick. */
-	struct mutex lock;
-
 	u32 cur;
 	u32 put;
 	u32 max;
@@ -108,9 +102,6 @@ void nv50_dmac_destroy(struct nv50_dmac *);
  */
 struct nouveau_encoder *nv50_real_outp(struct drm_encoder *encoder);
 
-u32 *evo_wait(struct nv50_dmac *, int nr);
-void evo_kick(u32 *, struct nv50_dmac *);
-
 extern const u64 disp50xx_modifiers[];
 extern const u64 disp90xx_modifiers[];
 extern const u64 wndwc57e_modifiers[];