Re: [PATCH 01/10] drm: Add drm_plane_mask()

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

On Tue, Jun 26, 2018 at 10:47:07PM +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> Add drm_plane_mask() which returns the 1<<index for the plane.
> We already have an identical drm_crtc_mask() for crtcs.
> 
> Mostly performed with coccinelle:
> @@
> @@
> - (1<<drm_plane_index(
> + drm_plane_mask(
>   ...)
> -  )
> 
> @@
> @@
> - 1<<drm_plane_index(
> + drm_plane_mask(
>   ...)
> 
> @@
> @@
> - BIT(drm_plane_index(
> + drm_plane_mask(
>   ...)
> - )
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

> ---
>  drivers/gpu/drm/drm_atomic.c            |  4 ++--
>  drivers/gpu/drm/drm_framebuffer.c       |  2 +-
>  drivers/gpu/drm/drm_simple_kms_helper.c |  2 +-
>  include/drm/drm_plane.h                 | 14 ++++++++++++--
>  4 files changed, 16 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 178842380f75..684c9d3a1d6c 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -1581,7 +1581,7 @@ drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
>  		if (WARN_ON(IS_ERR(crtc_state)))
>  			return PTR_ERR(crtc_state);
>  
> -		crtc_state->plane_mask &= ~(1 << drm_plane_index(plane));
> +		crtc_state->plane_mask &= ~drm_plane_mask(plane);
>  	}
>  
>  	plane_state->crtc = crtc;
> @@ -1591,7 +1591,7 @@ drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
>  						       crtc);
>  		if (IS_ERR(crtc_state))
>  			return PTR_ERR(crtc_state);
> -		crtc_state->plane_mask |= (1 << drm_plane_index(plane));
> +		crtc_state->plane_mask |= drm_plane_mask(plane);
>  	}
>  
>  	if (crtc)
> diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
> index ed90974a452a..781af1d42d76 100644
> --- a/drivers/gpu/drm/drm_framebuffer.c
> +++ b/drivers/gpu/drm/drm_framebuffer.c
> @@ -847,7 +847,7 @@ static int atomic_remove_fb(struct drm_framebuffer *fb)
>  		if (ret)
>  			goto unlock;
>  
> -		plane_mask |= BIT(drm_plane_index(plane));
> +		plane_mask |= drm_plane_mask(plane);
>  	}
>  
>  	/* This list is only filled when disable_crtcs is set. */
> diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c
> index 7a00455ca568..9d87961da1db 100644
> --- a/drivers/gpu/drm/drm_simple_kms_helper.c
> +++ b/drivers/gpu/drm/drm_simple_kms_helper.c
> @@ -52,7 +52,7 @@ static int drm_simple_kms_crtc_check(struct drm_crtc *crtc,
>  				     struct drm_crtc_state *state)
>  {
>  	bool has_primary = state->plane_mask &
> -			   BIT(drm_plane_index(crtc->primary));
> +			   drm_plane_mask(crtc->primary);
>  
>  	/* We always want to have an active plane with an active CRTC */
>  	if (has_primary != state->enable)
> diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
> index 7d4d6c7f0afd..cee9dfaaa740 100644
> --- a/include/drm/drm_plane.h
> +++ b/include/drm/drm_plane.h
> @@ -639,10 +639,20 @@ void drm_plane_cleanup(struct drm_plane *plane);
>   * Given a registered plane, return the index of that plane within a DRM
>   * device's list of planes.
>   */
> -static inline unsigned int drm_plane_index(struct drm_plane *plane)
> +static inline unsigned int drm_plane_index(const struct drm_plane *plane)
>  {
>  	return plane->index;
>  }
> +
> +/**
> + * drm_plane_mask - find the mask of a registered plane
> + * @plane: plane to find mask for
> + */
> +static inline u32 drm_plane_mask(const struct drm_plane *plane)
> +{
> +	return 1 << drm_plane_index(plane);
> +}
> +
>  struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx);
>  void drm_plane_force_disable(struct drm_plane *plane);
>  
> @@ -678,7 +688,7 @@ static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
>   */
>  #define drm_for_each_plane_mask(plane, dev, plane_mask) \
>  	list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
> -		for_each_if ((plane_mask) & (1 << drm_plane_index(plane)))
> +		for_each_if ((plane_mask) & drm_plane_mask(plane))
>  
>  /**
>   * drm_for_each_legacy_plane - iterate over all planes for legacy userspace
> -- 
> 2.16.4
> 
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