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drm/amdgpu: clean framebuffer with GPU

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CPU is not efficient to clean framebuffer especially under
virtualization, then loading driver takes long time which causes
timeout of mailbox handshake.

Signed-off-by: Pixel Ding <Pixel.Ding@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Pixel Ding 2017-01-24 11:39:48 +08:00 committed by Alex Deucher
parent 9bc92b9c8d
commit cbabc8b343
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
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@ -147,7 +147,8 @@ static int amdgpufb_create_pinned_object(struct amdgpu_fbdev *rfbdev,
ret = amdgpu_gem_object_create(adev, aligned_size, 0,
AMDGPU_GEM_DOMAIN_VRAM,
AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,
AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
AMDGPU_GEM_CREATE_VRAM_CLEARED,
true, &gobj);
if (ret) {
printk(KERN_ERR "failed to allocate framebuffer (%d)\n",
@ -241,8 +242,6 @@ static int amdgpufb_create(struct drm_fb_helper *helper,
/* setup helper */
rfbdev->helper.fb = fb;
memset_io(abo->kptr, 0x0, amdgpu_bo_size(abo));
strcpy(info->fix.id, "amdgpudrmfb");
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);