Re: [PATCH] drm/plane-helper: unexport drm_primary_helper_create_plane

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On Thu, Mar 05, 2015 at 11:01:08AM +0100, Daniel Vetter wrote:
> We shouldn't tempt driver writers into using this since it uses a
> default format list which is likely wrong. And when that's done we can
> simplify the code a bit, too.
> 
> Noticed while reviewing a patch from Laurent.
> 
> Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>

Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx>

> ---
>  drivers/gpu/drm/drm_plane_helper.c | 26 ++++----------------------
>  include/drm/drm_plane_helper.h     |  4 ----
>  2 files changed, 4 insertions(+), 26 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
> index 5ba5792bfdba..de8c6565bc55 100644
> --- a/drivers/gpu/drm/drm_plane_helper.c
> +++ b/drivers/gpu/drm/drm_plane_helper.c
> @@ -344,20 +344,7 @@ const struct drm_plane_funcs drm_primary_helper_funcs = {
>  };
>  EXPORT_SYMBOL(drm_primary_helper_funcs);
>  
> -/**
> - * drm_primary_helper_create_plane() - Create a generic primary plane
> - * @dev: drm device
> - * @formats: pixel formats supported, or NULL for a default safe list
> - * @num_formats: size of @formats; ignored if @formats is NULL
> - *
> - * Allocates and initializes a primary plane that can be used with the primary
> - * plane helpers.  Drivers that wish to use driver-specific plane structures or
> - * provide custom handler functions may perform their own allocation and
> - * initialization rather than calling this function.
> - */
> -struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
> -						  const uint32_t *formats,
> -						  int num_formats)
> +static struct drm_plane *create_primary_plane(struct drm_device *dev)
>  {
>  	struct drm_plane *primary;
>  	int ret;
> @@ -368,15 +355,11 @@ struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
>  		return NULL;
>  	}
>  
> -	if (formats == NULL) {
> -		formats = safe_modeset_formats;
> -		num_formats = ARRAY_SIZE(safe_modeset_formats);
> -	}
> -
>  	/* possible_crtc's will be filled in later by crtc_init */
>  	ret = drm_universal_plane_init(dev, primary, 0,
>  				       &drm_primary_helper_funcs,
> -				       formats, num_formats,
> +				       safe_modeset_formats,
> +				       ARRAY_SIZE(safe_modeset_formats),
>  				       DRM_PLANE_TYPE_PRIMARY);
>  	if (ret) {
>  		kfree(primary);
> @@ -385,7 +368,6 @@ struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
>  
>  	return primary;
>  }
> -EXPORT_SYMBOL(drm_primary_helper_create_plane);
>  
>  /**
>   * drm_crtc_init - Legacy CRTC initialization function
> @@ -404,7 +386,7 @@ int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
>  {
>  	struct drm_plane *primary;
>  
> -	primary = drm_primary_helper_create_plane(dev, NULL, 0);
> +	primary = create_primary_plane(dev);
>  	return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs);
>  }
>  EXPORT_SYMBOL(drm_crtc_init);
> diff --git a/include/drm/drm_plane_helper.h b/include/drm/drm_plane_helper.h
> index 31c11d36fae6..695f9791659d 100644
> --- a/include/drm/drm_plane_helper.h
> +++ b/include/drm/drm_plane_helper.h
> @@ -98,10 +98,6 @@ extern int drm_primary_helper_update(struct drm_plane *plane,
>  extern int drm_primary_helper_disable(struct drm_plane *plane);
>  extern void drm_primary_helper_destroy(struct drm_plane *plane);
>  extern const struct drm_plane_funcs drm_primary_helper_funcs;
> -extern struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
> -							 const uint32_t *formats,
> -							 int num_formats);
> -
>  
>  int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
>  			    struct drm_framebuffer *fb,
> -- 
> 2.1.4
> 

-- 
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
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