Re: [PATCH 07/14] drm/exynos: atomic phase 1: use drm_plane_helper_disable()

[Joonyoung Shim <jy0922.shim@samsung.com>]

Hi,

On 02/04/2015 04:14 AM, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> 
> The atomic helper to disable planes also uses the optional
> .atomic_disable() helper. The unique operation it does is calling
> .win_disable()
> 

Is there any reason to split this patch from patch 06/14?

> exynos_drm_fb_get_buf_cnt() needs a fb check too to avoid a null pointer.
> 

This is not related with this patch purpose.

> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_fb.c    |  2 +-
>  drivers/gpu/drm/exynos/exynos_drm_plane.c | 14 +++++++++++++-
>  2 files changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
> index d346d1e..470456d 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
> @@ -136,7 +136,7 @@ unsigned int exynos_drm_fb_get_buf_cnt(struct drm_framebuffer *fb)
>  
>  	exynos_fb = to_exynos_fb(fb);
>  
> -	return exynos_fb->buf_cnt;
> +	return exynos_fb ? exynos_fb->buf_cnt : 0;

I don't think exynos_fb can be NULL.

Thanks.

>  }
>  
>  struct drm_framebuffer *
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
> index 2c356b9..a3b0687 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
> @@ -219,7 +219,7 @@ static int exynos_plane_set_property(struct drm_plane *plane,
>  
>  static struct drm_plane_funcs exynos_plane_funcs = {
>  	.update_plane	= drm_plane_helper_update,
> -	.disable_plane	= exynos_disable_plane,
> +	.disable_plane	= drm_plane_helper_disable,
>  	.destroy	= exynos_plane_destroy,
>  	.set_property	= exynos_plane_set_property,
>  };
> @@ -242,9 +242,21 @@ static void exynos_plane_atomic_update(struct drm_plane *plane,
>  			    state->src_w >> 16, state->src_h >> 16);
>  }
>  
> +static void exynos_plane_atomic_disable(struct drm_plane *plane,
> +				        struct drm_plane_state *old_state)
> +{
> +	struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
> +	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(old_state->crtc);
> +
> +	if (exynos_crtc->ops->win_disable)
> +		exynos_crtc->ops->win_disable(exynos_crtc,
> +					      exynos_plane->zpos);
> +}
> +
>  static const struct drm_plane_helper_funcs plane_helper_funcs = {
>  	.atomic_check = exynos_plane_atomic_check,
>  	.atomic_update = exynos_plane_atomic_update,
> +	.atomic_disable = exynos_plane_atomic_disable,
>  };
>  
>  static void exynos_plane_attach_zpos_property(struct drm_plane *plane)
> 

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