linux-kernel - Re: [PATCH v2 5/6] drm/atomic: Add drm_atomic_helper_best

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Date:	Wed, 11 May 2016 18:55:29 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Noralf Trønnes <noralf@...nnes.org>
Cc:	dri-devel@...ts.freedesktop.org, daniel@...ll.ch,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/6] drm/atomic: Add drm_atomic_helper_best_encoder()

On Wed, May 11, 2016 at 06:09:21PM +0200, Noralf Trønnes wrote:
> Add (struct drm_connector_helper_funcs *)->best_encoder callback helper
> for connectors that support exactly 1 encoder, statically determined at
> driver init time.
> 
> Signed-off-by: Noralf Trønnes <noralf@...nnes.org>

Applied to drm-misc, thanks.
-Daniel

> ---
>  drivers/gpu/drm/drm_atomic_helper.c | 17 +++++++++++++++++
>  include/drm/drm_atomic_helper.h     |  2 ++
>  2 files changed, 19 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 46a3201..43a0b3d 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -2483,6 +2483,23 @@ backoff:
>  EXPORT_SYMBOL(drm_atomic_helper_connector_dpms);
>  
>  /**
> + * drm_atomic_helper_best_encoder - Helper for &drm_connector_helper_funcs
> + *                                  ->best_encoder callback
> + * @connector: Connector control structure
> + *
> + * This is a &drm_connector_helper_funcs ->best_encoder callback helper for
> + * connectors that support exactly 1 encoder, statically determined at driver
> + * init time.
> + */
> +struct drm_encoder *
> +drm_atomic_helper_best_encoder(struct drm_connector *connector)
> +{
> +	WARN_ON(connector->encoder_ids[1]);
> +	return drm_encoder_find(connector->dev, connector->encoder_ids[0]);
> +}
> +EXPORT_SYMBOL(drm_atomic_helper_best_encoder);
> +
> +/**
>   * DOC: atomic state reset and initialization
>   *
>   * Both the drm core and the atomic helpers assume that there is always the full
> diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
> index 0364287..ccca709 100644
> --- a/include/drm/drm_atomic_helper.h
> +++ b/include/drm/drm_atomic_helper.h
> @@ -110,6 +110,8 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
>  				uint32_t flags);
>  int drm_atomic_helper_connector_dpms(struct drm_connector *connector,
>  				     int mode);
> +struct drm_encoder *
> +drm_atomic_helper_best_encoder(struct drm_connector *connector);
>  
>  /* default implementations for state handling */
>  void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc);
> -- 
> 2.8.2
> 

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