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| author |   Noralf Trønnes <noralf@tronnes.org> | 2018-07-03 18:03:47 +0200 |
|---|---|---|
| committer | Noralf Trønnes <noralf@tronnes.org> | 2018-07-10 14:51:37 +0200 |
| commit | c76f0f7cb546b661b5e0ac769850a5c854927f65 (patch) | |
| tree | 2435747fe4864fdd2406be8bcd089fb9e9eda33b /Documentation/gpu | |
| parent | drm: vkms: select DRM_KMS_HELPER (diff) | |
| download | linux-dev-c76f0f7cb546b661b5e0ac769850a5c854927f65.tar.xz linux-dev-c76f0f7cb546b661b5e0ac769850a5c854927f65.zip | |
drm: Begin an API for in-kernel clients
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
Diffstat (limited to 'Documentation/gpu')
| -rw-r--r-- | Documentation/gpu/drm-client.rst | 12 | ||||
| -rw-r--r-- | Documentation/gpu/index.rst | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/gpu/drm-client.rst b/Documentation/gpu/drm-client.rst new file mode 100644 index 000000000000..7e672063e7eb --- /dev/null +++ b/Documentation/gpu/drm-client.rst @@ -0,0 +1,12 @@ +================= +Kernel clients +================= + +.. kernel-doc:: drivers/gpu/drm/drm_client.c + :doc: overview + +.. kernel-doc:: include/drm/drm_client.h + :internal: + +.. kernel-doc:: drivers/gpu/drm/drm_client.c + :export: diff --git a/Documentation/gpu/index.rst b/Documentation/gpu/index.rst index 00288f34c5a6..1fcf8e851e15 100644 --- a/Documentation/gpu/index.rst +++ b/Documentation/gpu/index.rst @@ -10,6 +10,7 @@ Linux GPU Driver Developer's Guide drm-kms drm-kms-helpers drm-uapi + drm-client drivers vga-switcheroo vgaarbiter |