On Tue,  9 Jan 2018 11:56:21 +0100
Maxime Ripard <[email protected]> wrote:

> Now that the core has a drm format helper to tell if a format embeds an
> alpha component in it, let's use it.
> 
> Cc: Boris Brezillon <[email protected]>

Acked-by: Boris Brezillon <[email protected]>

> Signed-off-by: Maxime Ripard <[email protected]>
> ---
>  drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 20 ++----------------
>  1 file changed, 3 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c 
> b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
> index 703c2d13603f..1a9318810a29 100644
> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
> @@ -194,20 +194,6 @@ static int atmel_hlcdc_format_to_plane_mode(u32 format, 
> u32 *mode)
>       return 0;
>  }
>  
> -static bool atmel_hlcdc_format_embeds_alpha(u32 format)
> -{
> -     int i;
> -
> -     for (i = 0; i < sizeof(format); i++) {
> -             char tmp = (format >> (8 * i)) & 0xff;
> -
> -             if (tmp == 'A')
> -                     return true;
> -     }
> -
> -     return false;
> -}
> -
>  static u32 heo_downscaling_xcoef[] = {
>       0x11343311,
>       0x000000f7,
> @@ -395,7 +381,7 @@ atmel_hlcdc_plane_update_general_settings(struct 
> atmel_hlcdc_plane *plane,
>               cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL |
>                      ATMEL_HLCDC_LAYER_ITER;
>  
> -             if (atmel_hlcdc_format_embeds_alpha(format))
> +             if (drm_format_has_alpha(format))
>                       cfg |= ATMEL_HLCDC_LAYER_LAEN;
>               else
>                       cfg |= ATMEL_HLCDC_LAYER_GAEN |
> @@ -566,7 +552,7 @@ atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state 
> *c_state)
>               ovl_state = drm_plane_state_to_atmel_hlcdc_plane_state(ovl_s);
>  
>               if (!ovl_s->fb ||
> -                 atmel_hlcdc_format_embeds_alpha(ovl_s->fb->format->format) 
> ||
> +                 drm_format_has_alpha(ovl_s->fb->format->format) ||
>                   ovl_state->alpha != 255)
>                       continue;
>  
> @@ -769,7 +755,7 @@ static int atmel_hlcdc_plane_atomic_check(struct 
> drm_plane *p,
>  
>       if ((state->crtc_h != state->src_h || state->crtc_w != state->src_w) &&
>           (!desc->layout.memsize ||
> -          atmel_hlcdc_format_embeds_alpha(state->base.fb->format->format)))
> +          drm_format_has_alpha(state->base.fb->format->format)))
>               return -EINVAL;
>  
>       if (state->crtc_x < 0 || state->crtc_y < 0)

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