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Commit cbabc8b3 authored by Pixel Ding's avatar Pixel Ding Committed by Alex Deucher
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drm/amdgpu: clean framebuffer with GPU 



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: default avatarPixel Ding <Pixel.Ding@amd.com>
Reviewed-by: default avatarEdward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9bc92b9c

drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c

+2 −3
Original line number Diff line number Diff line
@@ -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);