[PATCH] drm: More links for gamma support helpers

[Daniel Vetter]

On Tue, Jun 20, 2017 at 11:48:05AM +0200, Boris Brezillon wrote:
> On Tue, 20 Jun 2017 11:42:28 +0200
> Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> 
> > It's not obvious that when using the new color manager stuff you still
> > need to wire up the legacy helper to get legacy LUT support. Improve
> > this with more links. drm_crtc_funcs->gamma_set already explains this
> > properly.
> > 
> > Cc: Peter Rosin <peda at axentia.se>
> > Cc: Boris Brezillon <boris.brezillon at free-electrons.com>
> 
> Reviewed-by: Boris Brezillon <boris.brezillon at free-electrons.com>

Thanks for the review, applied.
-Daniel

> 
> > Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> > ---
> >  drivers/gpu/drm/drm_color_mgmt.c | 3 +++
> >  1 file changed, 3 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/drm_color_mgmt.c b/drivers/gpu/drm/drm_color_mgmt.c
> > index 3eda500fc005..fe0982708e95 100644
> > --- a/drivers/gpu/drm/drm_color_mgmt.c
> > +++ b/drivers/gpu/drm/drm_color_mgmt.c
> > @@ -128,6 +128,9 @@ EXPORT_SYMBOL(drm_color_lut_extract);
> >   * optional. The gamma and degamma properties are only attached if
> >   * their size is not 0 and ctm_property is only attached if has_ctm is
> >   * true.
> > + *
> > + * Drivers should use drm_atomic_helper_legacy_gamma_set() to implement the
> > + * legacy &drm_crtc_funcs.gamma_set callback.
> >   */
> >  void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
> >  				uint degamma_lut_size,
> 

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