drm/nouveau: Use drm_gem_ttm_dumb_map_offset()

Nouveau now uses drm_gem_ttm_dumb_map_offset() to implement
struct drm_driver.dumb_map_offset.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210408140139.27731-4-tzimmermann@suse.de

drivers/gpu/drm/nouveau/nouveau_display.c

@@ -838,21 +838,3 @@ nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 	drm_gem_object_put(&bo->bo.base);
 	return ret;
 }
-
-int
-nouveau_display_dumb_map_offset(struct drm_file *file_priv,
-				struct drm_device *dev,
-				uint32_t handle, uint64_t *poffset)
-{
-	struct drm_gem_object *gem;
-
-	gem = drm_gem_object_lookup(file_priv, handle);
-	if (gem) {
-		struct nouveau_bo *bo = nouveau_gem_object(gem);
-		*poffset = drm_vma_node_offset_addr(&bo->bo.base.vma_node);
-		drm_gem_object_put(gem);
-		return 0;
-	}
-
-	return -ENOENT;
-}

drivers/gpu/drm/nouveau/nouveau_display.h

@@ -58,8 +58,6 @@ bool nouveau_display_scanoutpos(struct drm_crtc *crtc,
 
 int  nouveau_display_dumb_create(struct drm_file *, struct drm_device *,
 				 struct drm_mode_create_dumb *args);
-int  nouveau_display_dumb_map_offset(struct drm_file *, struct drm_device *,
-				     u32 handle, u64 *offset);
 
 void nouveau_hdmi_mode_set(struct drm_encoder *, struct drm_display_mode *);
 

drivers/gpu/drm/nouveau/nouveau_drm.c

@@ -31,6 +31,7 @@
 #include <linux/mmu_notifier.h>
 
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_ttm_helper.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_vblank.h>
 
@@ -1212,7 +1213,7 @@ driver_stub = {
 	.gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table,
 
 	.dumb_create = nouveau_display_dumb_create,
-	.dumb_map_offset = nouveau_display_dumb_map_offset,
+	.dumb_map_offset = drm_gem_ttm_dumb_map_offset,
 
 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,