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Subject: Re: [PATCH 3/8] drm/ingenic: Use standard
 drm_atomic_helper_commit_tail
To:     Paul Cercueil <paul@crapouillou.net>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>
Cc:     "H . Nikolaus Schaller" <hns@goldelico.com>,
        Paul Boddie <paul@boddie.org.uk>, list@opendingux.net,
        Sam Ravnborg <sam@ravnborg.org>, linux-mips@vger.kernel.org,
        dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
References: <20210808134526.119198-1-paul@crapouillou.net>
 <20210808134526.119198-4-paul@crapouillou.net>
From:   Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Message-ID: <f3b761ed-4e71-e8b8-f2b5-f4f7f1547fed@wanadoo.fr>
Date:   Sun, 8 Aug 2021 21:50:04 +0200
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Le 08/08/2021 à 15:45, Paul Cercueil a écrit :
> By making the CRTC's .vblank_enable() function return an error when it
> is known that the hardware won't deliver a VBLANK, we can drop the
> ingenic_drm_atomic_helper_commit_tail() function and use the standard
> drm_atomic_helper_commit_tail() function instead.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> ---
>   drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 28 ++++-------------------
>   1 file changed, 4 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> index bc71ba44ccf4..3ed7c27a8dde 100644
> --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> @@ -706,29 +706,6 @@ static int ingenic_drm_encoder_atomic_check(struct drm_encoder *encoder,
>   	}
>   }
>   
> -static void ingenic_drm_atomic_helper_commit_tail(struct drm_atomic_state *old_state)
> -{
> -	/*
> -	 * Just your regular drm_atomic_helper_commit_tail(), but only calls
> -	 * drm_atomic_helper_wait_for_vblanks() if priv->no_vblank.
> -	 */
> -	struct drm_device *dev = old_state->dev;
> -	struct ingenic_drm *priv = drm_device_get_priv(dev);
> -
> -	drm_atomic_helper_commit_modeset_disables(dev, old_state);
> -
> -	drm_atomic_helper_commit_planes(dev, old_state, 0);
> -
> -	drm_atomic_helper_commit_modeset_enables(dev, old_state);
> -
> -	drm_atomic_helper_commit_hw_done(old_state);
> -
> -	if (!priv->no_vblank)
> -		drm_atomic_helper_wait_for_vblanks(dev, old_state);
> -
> -	drm_atomic_helper_cleanup_planes(dev, old_state);
> -}
> 

Hi,
if this function is removed, shouldn't:
   static struct drm_mode_config_helper_funcs 
ingenic_drm_mode_config_helpers = {
   	.atomic_commit_tail = ingenic_drm_atomic_helper_commit_tail,
   };
be updated as well?

I've not seen it in the serie.

Just my 2v.
CJ