drm/nouveau/core: add function to return list of supported children (29dff2f5) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/gpu/drm/nouveau/core/core/parent.c

+33 −0

Original line number	Diff line number	Diff line
		@@ -74,6 +74,39 @@ nouveau_parent_sclass(struct nouveau_object *parent, u16 handle,
		return -EINVAL;
		}

		int
		nouveau_parent_lclass(struct nouveau_object parent, u32 lclass, int size)
		{
		struct nouveau_sclass *sclass;
		struct nouveau_engine *engine;
		struct nouveau_oclass *oclass;
		int nr = -1, i;
		u64 mask;

		sclass = nv_parent(parent)->sclass;
		while (sclass) {
		if (++nr < size)
		lclass[nr] = sclass->oclass->handle;
		sclass = sclass->sclass;
		}

		mask = nv_parent(parent)->engine;
		while (i = __ffs64(mask), mask) {
		engine = nouveau_engine(parent, i);
		if (engine && (oclass = engine->sclass)) {
		while (oclass->ofuncs) {
		if (++nr < size)
		lclass[nr] = oclass->handle;
		oclass++;
		}
		}

		mask &= ~(1ULL << i);
		}

		return nr + 1;
		}

		int
		nouveau_parent_create_(struct nouveau_object *parent,
		struct nouveau_object *engine,

+1 −0

Original line number	Diff line number	Diff line
		@@ -57,5 +57,6 @@ void _nouveau_parent_dtor(struct nouveau_object *);
		int nouveau_parent_sclass(struct nouveau_object *, u16 handle,
		struct nouveau_object **pengine,
		struct nouveau_oclass **poclass);
		int nouveau_parent_lclass(struct nouveau_object , u32 , int);

		#endif