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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 Patch-mainline: 20180703160354.59955-2-noralf@tronnes.org @ 03/07/18, 04:03 p.m. [stalek@codeaurora.org: 1. drop drm_device.h and drm_file.c as the file is not present in kernel-4.9 2. drop some inclusion of header files in drm_client.c since the file is not present 3. Changes made in drm_file.c is pulled into drm_fops.c 4. Changes made in drm_device.h is pulled into drmP.h.]. Change-Id: Ibe4452f223fc79202685f1dee825f723cfb201aa Signed-off-by: Shubham Talekar <stalek@codeaurora.org>
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==================================
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Linux GPU Driver Developer's Guide
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==================================
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.. toctree::
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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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i915
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vga-switcheroo
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vgaarbiter
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.. only:: subproject
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Indices
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=======
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* :ref:`genindex`
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