[PATCH v2 1/6] drm/fb_cma_helper: add suspend helper

[Daniel Vetter]

On Fri, Jun 03, 2016 at 03:56:39PM -0700, Stefan Agner wrote:
> Implement a suspend/resume helper for CMA users which calls
> drm_fb_helper_set_suspend.
> 
> Suggested-by: Thierry Reding <thierry.reding at gmail.com>
> Signed-off-by: Stefan Agner <stefan at agner.ch>

Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>

... for merging through fsl-du tree. Just add a small note about it in
your pull request.
-Daniel

> ---
>  drivers/gpu/drm/drm_fb_cma_helper.c | 15 +++++++++++++++
>  include/drm/drm_fb_cma_helper.h     |  1 +
>  2 files changed, 16 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
> index 172cafe..6948d82 100644
> --- a/drivers/gpu/drm/drm_fb_cma_helper.c
> +++ b/drivers/gpu/drm/drm_fb_cma_helper.c
> @@ -582,3 +582,18 @@ void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma)
>  		drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper);
>  }
>  EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event);
> +
> +/**
> + * drm_fbdev_cma_set_suspend - wrapper around drm_fb_helper_set_suspend
> + * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
> + * @state: desired state, zero to resume, non-zero to suspend
> + *
> + * Calls drm_fb_helper_set_suspend, which is a wrapper around
> + * fb_set_suspend implemented by fbdev core.
> + */
> +void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state)
> +{
> +	if (fbdev_cma)
> +		drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
> +}
> +EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);
> diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h
> index fd0dde9..f313211 100644
> --- a/include/drm/drm_fb_cma_helper.h
> +++ b/include/drm/drm_fb_cma_helper.h
> @@ -23,6 +23,7 @@ void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma);
>  
>  void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
>  void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
> +void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state);
>  int drm_fbdev_cma_create_with_funcs(struct drm_fb_helper *helper,
>  	struct drm_fb_helper_surface_size *sizes,
>  	const struct drm_framebuffer_funcs *funcs);
> -- 
> 2.8.2
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch