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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-06-21 14:08:33 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-06-21 21:56:23 +0200 |
| commit | a325725633c26aa66ab940f762a6b0778edf76c0 (patch) | |
| tree | 0ef138846da01cda4e1a17bebd6dbb3e0a6ec3f7 /Documentation/gpu | |
| parent | drm: Nuke SET_UNIQUE ioctl (diff) | |
| download | linux-a325725633c26aa66ab940f762a6b0778edf76c0.tar.xz linux-a325725633c26aa66ab940f762a6b0778edf76c0.zip | |
drm: Lobotomize set_busid nonsense for !pci drivers
We already have a fallback in place to fill out the unique from
dev->unique, which is set to something reasonable in drm_dev_alloc.
Which means we only need to have a special set_busid for pci devices,
to be able to care the backwards compat code for drm 1.1 around, which
libdrm still needs.
While developing and testing this patch things blew up in really
interesting ways, and the code is rather confusing in naming things
between the kernel code, ioctl #defines and libdrm. For the next brave
dragon slayer, document all this madness properly in the userspace
interface section of gpu.tmpl.
v2: Make drm_dev_set_unique static and update kerneldoc.
v3: Entire rewrite, plus document what's going on for posterity in the
gpu docbook uapi section.
v4: Drop accidental amdgpu hunk (Emil).
v5: Drop accidental omapdrm vblank counter change (Emil).
v6: Rebase on top of the sphinx conversion.
Cc: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> (virt_gpu)
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'Documentation/gpu')
| -rw-r--r-- | Documentation/gpu/drm-uapi.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/gpu/drm-uapi.rst b/Documentation/gpu/drm-uapi.rst index 6da1e77e55fa..a1c6f0103bc4 100644 --- a/Documentation/gpu/drm-uapi.rst +++ b/Documentation/gpu/drm-uapi.rst @@ -14,6 +14,12 @@ management, and output management. Cover generic ioctls and sysfs layout here. We only need high-level info, since man pages should cover the rest. +libdrm Device Lookup +==================== + +.. kernel-doc:: drivers/gpu/drm/drm_ioctl.c + :doc: getunique and setversion story + Render nodes ============ |