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| author | Shawn Guo <shawn.guo@linaro.org> | 2017-01-07 09:52:11 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-01-09 11:24:16 +0100 |
| commit | 931c670d209b64a6033c1a2857ff309eee88f9c8 (patch) | |
| tree | b2618de534e01cc501f10453e75c16d4df7aa2d5 /drivers/gpu/drm/drm_crtc.c | |
| parent | drm: remove useless parameters from drm_pick_cmdline_mode function (diff) | |
| download | linux-931c670d209b64a6033c1a2857ff309eee88f9c8.tar.xz linux-931c670d209b64a6033c1a2857ff309eee88f9c8.zip | |
drm: add more document for drm_crtc_from_index()
Add a bit more document for function drm_crtc_from_index() to cross
link it with drm_crtc_from_index(), and explain that the function is
useful in vblank code.
While at it, add cross link comment for drm_plane_from_index() as well.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1483779131-19935-1-git-send-email-shawnguo@kernel.org
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 75e0beeb3793..bd3c8b243447 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -52,7 +52,10 @@ * @idx: index of registered CRTC to find for * * Given a CRTC index, return the registered CRTC from DRM device's - * list of CRTCs with matching index. + * list of CRTCs with matching index. This is the inverse of drm_crtc_index(). + * It's useful in the vblank callbacks (like &drm_driver.enable_vblank or + * &drm_driver.disable_vblank), since that still deals with indices instead + * of pointers to &struct drm_crtc." */ struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx) { |