Merge tag 'drm-misc-next-fixes-2021-09-09' of git://anongit.freedesktop.org/drm/drm...

[linux-2.6-microblaze.git] / drivers / gpu / drm / mediatek / mtk_drm_gem.c

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
index 280ea0d..d054496 100644 (file)
--- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
@@ -14,11 +14,14 @@
 #include "mtk_drm_drv.h"
 #include "mtk_drm_gem.h"
 
+static int mtk_drm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
+
 static const struct drm_gem_object_funcs mtk_drm_gem_object_funcs = {
        .free = mtk_drm_gem_free_object,
        .get_sg_table = mtk_gem_prime_get_sg_table,
        .vmap = mtk_drm_gem_prime_vmap,
        .vunmap = mtk_drm_gem_prime_vunmap,
+       .mmap = mtk_drm_gem_object_mmap,
        .vm_ops = &drm_gem_cma_vm_ops,
 };
 
@@ -145,11 +148,19 @@ static int mtk_drm_gem_object_mmap(struct drm_gem_object *obj,
        struct mtk_drm_gem_obj *mtk_gem = to_mtk_gem_obj(obj);
        struct mtk_drm_private *priv = obj->dev->dev_private;
 
+       /*
+        * Set vm_pgoff (used as a fake buffer offset by DRM) to 0 and map the
+        * whole buffer from the start.
+        */
+       vma->vm_pgoff = 0;
+
        /*
         * dma_alloc_attrs() allocated a struct page table for mtk_gem, so clear
         * VM_PFNMAP flag that was set by drm_gem_mmap_obj()/drm_gem_mmap().
         */
-       vma->vm_flags &= ~VM_PFNMAP;
+       vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+       vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
+       vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot);
 
        ret = dma_mmap_attrs(priv->dma_dev, vma, mtk_gem->cookie,
                             mtk_gem->dma_addr, obj->size, mtk_gem->dma_attrs);
@@ -159,37 +170,6 @@ static int mtk_drm_gem_object_mmap(struct drm_gem_object *obj,
        return ret;
 }
 
-int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj, struct vm_area_struct *vma)
-{
-       int ret;
-
-       ret = drm_gem_mmap_obj(obj, obj->size, vma);
-       if (ret)
-               return ret;
-
-       return mtk_drm_gem_object_mmap(obj, vma);
-}
-
-int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-       struct drm_gem_object *obj;
-       int ret;
-
-       ret = drm_gem_mmap(filp, vma);
-       if (ret)
-               return ret;
-
-       obj = vma->vm_private_data;
-
-       /*
-        * Set vm_pgoff (used as a fake buffer offset by DRM) to 0 and map the
-        * whole buffer from the start.
-        */
-       vma->vm_pgoff = 0;
-
-       return mtk_drm_gem_object_mmap(obj, vma);
-}
-
 /*
  * Allocate a sg_table for this GEM object.
  * Note: Both the table's contents, and the sg_table itself must be freed by