This the beginning of an API for in-kernel clients. First out is a way to get a framebuffer backed by a dumb buffer. Only GEM drivers are supported. The original idea of using an exported dma-buf was dropped because it also creates an anonomous file descriptor which doesn't work when the buffer is created from a kernel thread. The easy way out is to use drm_driver.gem_prime_vmap to get the virtual address, which requires a GEM object. This excludes the vmwgfx driver which is the only non-GEM driver apart from the legacy ones. A solution for vmwgfx will have to be worked out later if it wants to support the client API which it probably will when we have a bootsplash client. Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703160354.59955-2-noralf@tronnes.org
		
			
				
	
	
		
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| ==================================
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| Linux GPU Driver Developer's Guide
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| ==================================
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| 
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| .. toctree::
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| 
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|    introduction
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|    drm-internals
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|    drm-mm
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|    drm-kms
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|    drm-kms-helpers
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|    drm-uapi
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|    drm-client
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|    drivers
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|    vga-switcheroo
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|    vgaarbiter
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|    todo
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| 
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| .. only::  subproject and html
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| 
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|    Indices
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|    =======
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| 
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|    * :ref:`genindex`
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