[PATCH V4 05/10] drm/bridge: add helper functions to support bridge chain

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs at samsung.com> wrote:
> Add helper functions to create bridge chain and to call the
> corresponding next_bridge functions.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs at samsung.com>
> Suggested-by: Rob Clark <robdclark at gmail.com>
> ---
>  include/drm/drm_crtc.h |   72 ++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 72 insertions(+)
>
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index a7fac56..ba6a0d2 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -640,6 +640,7 @@ struct drm_bridge_funcs {
>  struct drm_bridge {
>         struct drm_device *dev;
>         struct list_head head;
> +       struct drm_bridge *next_bridge;
>
>         struct drm_mode_object base;
>
> @@ -1148,6 +1149,77 @@ drm_property_blob_find(struct drm_device *dev, uint32_t id)
>         return mo ? obj_to_blob(mo) : NULL;
>  }
>
> +static inline int drm_bridge_add_to_chain(struct drm_bridge *head,
> +                                         struct drm_bridge *last)
> +{
> +       struct drm_bridge *temp = head;
> +
> +       if (head && last) {
> +               while (temp->next_bridge)
> +                       temp = temp->next_bridge;
> +
> +               temp->next_bridge = last;
> +               return 0;
> +       }
> +
> +       return -EINVAL;
> +}
> +
> +static inline void drm_next_bridge_mode_fixup(struct drm_bridge *bridge,
> +                                       const struct drm_display_mode *mode,
> +                                       struct drm_display_mode *adjusted_mode)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->mode_fixup)
> +               bridge->next_bridge->funcs->mode_fixup(bridge->next_bridge,
> +                                                       mode, adjusted_mode);
> +}
> +
> +static inline void drm_next_bridge_disable(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->disable)
> +               bridge->next_bridge->funcs->disable(bridge->next_bridge);
> +}
> +
> +static inline void drm_next_bridge_post_disable(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->post_disable)
> +               bridge->next_bridge->funcs->post_disable(bridge->next_bridge);
> +}
> +
> +static inline void drm_next_bridge_mode_set(struct drm_bridge *bridge,
> +                                       struct drm_display_mode *mode,
> +                                       struct drm_display_mode *adjusted_mode)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->mode_set)
> +               bridge->next_bridge->funcs->mode_set(bridge->next_bridge,
> +                                                       mode, adjusted_mode);
> +}
> +
> +static inline void drm_next_bridge_pre_enable(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->pre_enable)
> +               bridge->next_bridge->funcs->pre_enable(bridge->next_bridge);
> +}
> +
> +static inline void drm_next_bridge_enable(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->enable)
> +               bridge->next_bridge->funcs->enable(bridge->next_bridge);
> +}
> +
> +static inline void drm_next_bridge_destroy(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->destroy)
> +               bridge->next_bridge->funcs->destroy(bridge->next_bridge);
> +}
> +
>  /* Plane list iterator for legacy (overlay only) planes. */
>  #define drm_for_each_legacy_plane(plane, planelist) \
>         list_for_each_entry(plane, planelist, head) \
> --
> 1.7.9.5
>