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author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-01-20 22:13:14 +0100 |
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committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-02-14 00:08:32 +0100 |
commit | 207fd32970b1def91b11ae28f6bebffc792db714 (patch) | |
tree | 75dd7d58e32b54395be26aba4381012251f65f55 /include/drm/drm_fb_helper.h | |
parent | cd5428a5447cc6ca77ec6547d6f86834b205eac7 (diff) | |
download | linux-stable-207fd32970b1def91b11ae28f6bebffc792db714.tar.gz linux-stable-207fd32970b1def91b11ae28f6bebffc792db714.tar.bz2 linux-stable-207fd32970b1def91b11ae28f6bebffc792db714.zip |
drm/fb-helper: improve kerneldoc
Now that the fbdev helper interface for drivers is trimmed down,
update the kerneldoc for all the remaining exported functions.
I've tried to beat the DocBook a bit by reordering the function
references a bit into a more sensible ordering. But that didn't work
out at all. Hence just extend the in-code DOC: section a bit.
Also remove the LOCKING: sections - especially for the setup functions
they're totally bogus. But that's not a documentation problem, but
simply an artifact of the current rather hazardous locking around drm
init and even more so around fbdev setup ...
v2: Some further improvements:
- Also add documentation for drm_fb_helper_single_add_all_connectors,
Dave Airlie didn't want me to kill this one from the fb helper
interface.
- Update docs for drm_fb_helper_fill_var/fix - they should be used
from the driver's ->fb_probe callback to setup the fbdev info
structure.
- Clarify what the ->fb_probe callback should all do - it needs to
setup both the fbdev info and allocate the drm framebuffer used as
backing storage.
- Add basic documentaation for the drm_fb_helper_funcs driver callback
vfunc.
v3: Implement clarifications Laurent Pinchart suggested in his review.
v4: Fix another mispelling Laurent spotted.
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/drm/drm_fb_helper.h')
-rw-r--r-- | include/drm/drm_fb_helper.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 973402d6effe..31e5b97c2e89 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -48,6 +48,18 @@ struct drm_fb_helper_surface_size { u32 surface_depth; }; +/** + * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library + * @gamma_set: - Set the given gamma lut register on the given crtc. + * @gamma_get: - Read the given gamma lut register on the given crtc, used to + * save the current lut when force-restoring the fbdev for e.g. + * kdbg. + * @fb_probe: - Driver callback to allocate and initialize the fbdev info + * structure. Futhermore it also needs to allocate the drm + * framebuffer used to back the fbdev. + * + * Driver callbacks used by the fbdev emulation helper library. + */ struct drm_fb_helper_funcs { void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green, u16 blue, int regno); |