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drm/rockchip: gem: support cpu cache for drm memory

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Change-Id: Ic9ca3d0862eb8c5c4d8a002db8cbbcc93d2dcc02
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Signed-off-by: Sandy Huang <hjc@rock-chips.com>
This commit is contained in:
Sandy Huang
2019-11-27 14:05:11 +08:00
committed by Tao Huang
parent d135266e27
commit 6aed65b3da
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/rockchip/rockchip_drm_gem.c
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@@ -525,6 +525,10 @@ static int rockchip_drm_gem_object_mmap(struct drm_gem_object *obj,
int ret;
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
/* default is wc. */
if (rk_obj->flags & ROCKCHIP_BO_CACHABLE)
vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
/*
* We allocated a struct page table for rk_obj, so clear
* VM_PFNMAP flag that was set by drm_gem_mmap_obj()/drm_gem_mmap().