Re: [PATCH 16/28] drm: Document drm_atomic_*_get_property

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On Mon, Dec 07, 2015 at 01:01:35PM +0100, Thierry Reding wrote:
> On Fri, Dec 04, 2015 at 09:45:57AM +0100, Daniel Vetter wrote:
> > Yes these are internal functions and not exported and we generally
> > don't document them. But for symmetry with the _set_property functions
> > (which are exported for the atomic helpers) I'd like to document them.
> > Upcoming vtable kerneldoc will reference both the set and get_property
> > functions.
> > 
> > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> > ---
> >  Documentation/DocBook/gpu.tmpl |  1 +
> >  drivers/gpu/drm/drm_atomic.c   | 33 ++++++++++++++++++++++++++++++---
> >  2 files changed, 31 insertions(+), 3 deletions(-)
> > 
> > diff --git a/Documentation/DocBook/gpu.tmpl b/Documentation/DocBook/gpu.tmpl
> > index 23ad100c2bf5..02c7d44f517c 100644
> > --- a/Documentation/DocBook/gpu.tmpl
> > +++ b/Documentation/DocBook/gpu.tmpl
> > @@ -946,6 +946,7 @@ int max_width, max_height;</synopsis>
> >      <sect2>
> >        <title>Atomic Mode Setting Function Reference</title>
> >  !Edrivers/gpu/drm/drm_atomic.c
> > +!Idrivers/gpu/drm/drm_atomic.c
> >      </sect2>
> >      <sect2>
> >        <title>Frame Buffer Creation</title>
> > diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> > index ef5f7663a718..7426d40017a0 100644
> > --- a/drivers/gpu/drm/drm_atomic.c
> > +++ b/drivers/gpu/drm/drm_atomic.c
> > @@ -429,11 +429,20 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
> >  }
> >  EXPORT_SYMBOL(drm_atomic_crtc_set_property);
> >  
> > -/*
> > +/**
> > + * drm_atomic_crtc_get_property - get property value from CRTC state
> > + * @crtc: the drm CRTC to set a property on
> > + * @state: the state object to get the property value from
> > + * @property: the property to set
> > + * @val: pointer to where the value should be written to
> 
> Nit: I find this difficult to write and read, and I prefer the wording
> "return location for the property value". But either way:

Yeah that reads much better. Changed all 3 places in drm_atomic. We might
want to have a style guide for DRM docs for these things ...
-Daniel
> 
> Reviewed-by: Thierry Reding <treding@xxxxxxxxxx>



-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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