Re: [PATCH 1/4] drm/simple_kms_helper: Add {enable|disable}_vblank callback support

[Daniel Vetter]

On Mon, Feb 19, 2018 at 11:11:23AM +0200, Oleksandr Andrushchenko wrote:
> ping
> On 02/12/2018 10:52 AM, Oleksandr Andrushchenko wrote:
> > From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
> > 
> > If simple_kms_helper based driver needs to work with vblanks,
> > then it has to provide drm_driver.{enable|disable}_vblank callbacks,
> > because drm_simple_kms_helper.drm_crtc_funcs does not provide any.
> > At the same time drm_driver.{enable|disable}_vblank callbacks
> > are marked as deprecated and shouldn't be used by new drivers.
> > 
> > Fix this by extending drm_simple_kms_helper.drm_crtc_funcs
> > to provide the missing callbacks.
> > 
> > Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>

lgtm, all 4 applied, thanks for your patches.
-Daniel

> > ---
> >   drivers/gpu/drm/drm_simple_kms_helper.c | 24 ++++++++++++++++++++++++
> >   include/drm/drm_simple_kms_helper.h     | 18 ++++++++++++++++++
> >   2 files changed, 42 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c
> > index 9d3f6b70812c..9ca8a4a59b74 100644
> > --- a/drivers/gpu/drm/drm_simple_kms_helper.c
> > +++ b/drivers/gpu/drm/drm_simple_kms_helper.c
> > @@ -77,6 +77,28 @@ static const struct drm_crtc_helper_funcs drm_simple_kms_crtc_helper_funcs = {
> >   	.atomic_disable = drm_simple_kms_crtc_disable,
> >   };
> > +static int drm_simple_kms_crtc_enable_vblank(struct drm_crtc *crtc)
> > +{
> > +	struct drm_simple_display_pipe *pipe;
> > +
> > +	pipe = container_of(crtc, struct drm_simple_display_pipe, crtc);
> > +	if (!pipe->funcs || !pipe->funcs->enable_vblank)
> > +		return 0;
> > +
> > +	return pipe->funcs->enable_vblank(pipe);
> > +}
> > +
> > +static void drm_simple_kms_crtc_disable_vblank(struct drm_crtc *crtc)
> > +{
> > +	struct drm_simple_display_pipe *pipe;
> > +
> > +	pipe = container_of(crtc, struct drm_simple_display_pipe, crtc);
> > +	if (!pipe->funcs || !pipe->funcs->disable_vblank)
> > +		return;
> > +
> > +	pipe->funcs->disable_vblank(pipe);
> > +}
> > +
> >   static const struct drm_crtc_funcs drm_simple_kms_crtc_funcs = {
> >   	.reset = drm_atomic_helper_crtc_reset,
> >   	.destroy = drm_crtc_cleanup,
> > @@ -84,6 +106,8 @@ static const struct drm_crtc_funcs drm_simple_kms_crtc_funcs = {
> >   	.page_flip = drm_atomic_helper_page_flip,
> >   	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
> >   	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
> > +	.enable_vblank = drm_simple_kms_crtc_enable_vblank,
> > +	.disable_vblank = drm_simple_kms_crtc_disable_vblank,
> >   };
> >   static int drm_simple_kms_plane_atomic_check(struct drm_plane *plane,
> > diff --git a/include/drm/drm_simple_kms_helper.h b/include/drm/drm_simple_kms_helper.h
> > index 6d9adbb46293..79567826b099 100644
> > --- a/include/drm/drm_simple_kms_helper.h
> > +++ b/include/drm/drm_simple_kms_helper.h
> > @@ -93,6 +93,24 @@ struct drm_simple_display_pipe_funcs {
> >   	 */
> >   	void (*cleanup_fb)(struct drm_simple_display_pipe *pipe,
> >   			   struct drm_plane_state *plane_state);
> > +
> > +	/**
> > +	 * @enable_vblank:
> > +	 *
> > +	 * Optional, called by &drm_crtc_funcs.enable_vblank. Please read
> > +	 * the documentation for the &drm_crtc_funcs.enable_vblank hook for
> > +	 * more details.
> > +	 */
> > +	int (*enable_vblank)(struct drm_simple_display_pipe *pipe);
> > +
> > +	/**
> > +	 * @disable_vblank:
> > +	 *
> > +	 * Optional, called by &drm_crtc_funcs.disable_vblank. Please read
> > +	 * the documentation for the &drm_crtc_funcs.disable_vblank hook for
> > +	 * more details.
> > +	 */
> > +	void (*disable_vblank)(struct drm_simple_display_pipe *pipe);
> >   };
> >   /**
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch