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Date:   Fri, 15 Jan 2021 22:39:17 +0200
From:   Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To:     Maxime Ripard <maxime@cerno.tech>
Cc:     Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Daniel Vetter <daniel.vetter@intel.com>,
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Subject: Re: [PATCH 04/10] drm/atomic: Pass the full state to planes
 atomic_check
Message-ID: <YAH9dTnznIugsSYE@pendragon.ideasonboard.com>
References: <20210115125703.1315064-1-maxime@cerno.tech>
 <20210115125703.1315064-4-maxime@cerno.tech>
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In-Reply-To: <20210115125703.1315064-4-maxime@cerno.tech>
Precedence: bulk

Hi Maxime,

Thank you for the patch.

On Fri, Jan 15, 2021 at 01:56:56PM +0100, Maxime Ripard wrote:
> The current atomic helpers have either their object state being passed as
> an argument or the full atomic state.
> 
> The former is the pattern that was done at first, before switching to the
> latter for new hooks or when it was needed.
> 
> Let's start convert all the remaining helpers to provide a consistent

s/start convert/convert/ ?

> interface, starting with the planes atomic_check.
> 
> The conversion was done using the coccinelle script below plus some
> manual changes for vmwgfx, built tested on all the drivers.
> 
> @@
> identifier plane, plane_state;
> symbol state;
> @@
> 
>  struct drm_plane_helper_funcs {
>  	...
> 	int (*atomic_check)(struct drm_plane *plane,
> -			    struct drm_plane_state *plane_state);
> +			    struct drm_atomic_state *state);
> 	...
> }
> 
> @ plane_atomic_func @
> identifier helpers;
> identifier func;
> @@
> 
> static const struct drm_plane_helper_funcs helpers = {
> 	...,
>  	.atomic_check = func,
> 	...,
> };
> 
> @@
> struct drm_plane_helper_funcs *FUNCS;
> identifier f;
> identifier dev;
> identifier plane, plane_state, state;
> @@
> 
>  f(struct drm_device *dev, struct drm_atomic_state *state)
>  {
>  	<+...
> -	FUNCS->atomic_check(plane, plane_state)
> +	FUNCS->atomic_check(plane, state)
>  	...+>
>  }
> 
> @@
> identifier plane_atomic_func.func;
> identifier plane;
> symbol state;
> @@
> 
>  func(struct drm_plane *plane,
> -    struct drm_plane_state *state)
> +    struct drm_plane_state *new_plane_state)
>  {
> 	<...
> -	state
> +	new_plane_state
> 	...>
>  }
> 

Is this needed, or is it a leftover from 02/10 ?

> @ ignores_new_state @
> identifier plane_atomic_func.func;
> identifier plane, new_plane_state;
> @@
> 
>  func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
>  {
> 	... when != new_plane_state
>  }
> 
> @ adds_new_state depends on plane_atomic_func && !ignores_new_state @
> identifier plane_atomic_func.func;
> identifier plane, new_plane_state;
> @@
> 
>  func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
>  {
> +	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane);
>  	...
>  }
> 
> @ depends on plane_atomic_func @
> identifier plane_atomic_func.func;
> identifier plane, new_plane_state;
> @@
> 
>  func(struct drm_plane *plane,
> -     struct drm_plane_state *new_plane_state
> +     struct drm_atomic_state *state
>      )
>  { ... }
> 
> @ include depends on adds_new_state @
> @@
> 
>  #include <drm/drm_atomic.h>
> 
> @ no_include depends on !include && adds_new_state @
> @@
> 
> + #include <drm/drm_atomic.h>
>   #include <drm/...>
> 
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> ---

[snip]

>  drivers/gpu/drm/drm_atomic_helper.c               | 2 +-
>  drivers/gpu/drm/drm_simple_kms_helper.c           | 4 +++-
>  drivers/gpu/drm/omapdrm/omap_plane.c              | 4 +++-
>  drivers/gpu/drm/rcar-du/rcar_du_plane.c           | 4 +++-
>  drivers/gpu/drm/rcar-du/rcar_du_vsp.c             | 5 ++++-
>  drivers/gpu/drm/xlnx/zynqmp_disp.c                | 4 +++-

For these,

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

[snip]

-- 
Regards,

Laurent Pinchart