On 26/06/17 19:12, Laurent Pinchart wrote:
> When the VSP1 is used in a DRM pipeline the driver doesn't register the
> media device. Links between entities are not exposed to userspace, but
> are still used internally for the sole purpose of setting up internal
> source to sink pointers through the link setup handler.
>
> Instead of going through this complex procedure, remove link creation
> and set the sink pointers directly.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
A whole function removed ... always love code removal...
Reviewed-by: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com>
> ---
> drivers/media/platform/vsp1/vsp1_drm.c | 53
> ++++------------------------------
> drivers/media/platform/vsp1/vsp1_drm.h | 1 -
> drivers/media/platform/vsp1/vsp1_drv.c | 16 ++++------
> 3 files changed, 12 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/media/platform/vsp1/vsp1_drm.c
> b/drivers/media/platform/vsp1/vsp1_drm.c
> index 2d5a74e95e09..c72d021ff820 100644
> --- a/drivers/media/platform/vsp1/vsp1_drm.c
> +++ b/drivers/media/platform/vsp1/vsp1_drm.c
> @@ -487,6 +487,7 @@ void vsp1_du_atomic_flush(struct device *dev)
>
> vsp1->bru->inputs[i].rpf = rpf;
> rpf->bru_input = i;
> + rpf->entity.sink = &vsp1->bru->entity;
> rpf->entity.sink_pad = i;
>
> dev_dbg(vsp1->dev, "%s: connecting RPF.%u to BRU:%u\n",
> @@ -564,53 +565,6 @@ EXPORT_SYMBOL_GPL(vsp1_du_unmap_sg);
> * Initialization
> */
>
> -int vsp1_drm_create_links(struct vsp1_device *vsp1)
> -{
> - const u32 flags = MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE;
> - unsigned int i;
> - int ret;
> -
> - /*
> - * VSPD instances require a BRU to perform composition and a LIF to
> - * output to the DU.
> - */
> - if (!vsp1->bru || !vsp1->lif)
> - return -ENXIO;
> -
> - for (i = 0; i < vsp1->info->rpf_count; ++i) {
> - struct vsp1_rwpf *rpf = vsp1->rpf[i];
> -
> - ret = media_create_pad_link(&rpf->entity.subdev.entity,
> - RWPF_PAD_SOURCE,
> - &vsp1->bru->entity.subdev.entity,
> - i, flags);
> - if (ret < 0)
> - return ret;
> -
> - rpf->entity.sink = &vsp1->bru->entity;
> - rpf->entity.sink_pad = i;
> - }
> -
> - ret = media_create_pad_link(&vsp1->bru->entity.subdev.entity,
> - vsp1->bru->entity.source_pad,
> - &vsp1->wpf[0]->entity.subdev.entity,
> - RWPF_PAD_SINK, flags);
> - if (ret < 0)
> - return ret;
> -
> - vsp1->bru->entity.sink = &vsp1->wpf[0]->entity;
> - vsp1->bru->entity.sink_pad = RWPF_PAD_SINK;
> -
> - ret = media_create_pad_link(&vsp1->wpf[0]->entity.subdev.entity,
> - RWPF_PAD_SOURCE,
> - &vsp1->lif->entity.subdev.entity,
> - LIF_PAD_SINK, flags);
> - if (ret < 0)
> - return ret;
> -
> - return 0;
> -}
> -
> int vsp1_drm_init(struct vsp1_device *vsp1)
> {
> struct vsp1_pipeline *pipe;
> @@ -631,6 +585,11 @@ int vsp1_drm_init(struct vsp1_device *vsp1)
> list_add_tail(&input->entity.list_pipe, &pipe->entities);
> }
>
> + vsp1->bru->entity.sink = &vsp1->wpf[0]->entity;
> + vsp1->bru->entity.sink_pad = 0;
> + vsp1->wpf[0]->entity.sink = &vsp1->lif->entity;
> + vsp1->wpf[0]->entity.sink_pad = 0;
> +
> list_add_tail(&vsp1->bru->entity.list_pipe, &pipe->entities);
> list_add_tail(&vsp1->wpf[0]->entity.list_pipe, &pipe->entities);
> list_add_tail(&vsp1->lif->entity.list_pipe, &pipe->entities);
> diff --git a/drivers/media/platform/vsp1/vsp1_drm.h
> b/drivers/media/platform/vsp1/vsp1_drm.h
> index cbdbb8a39883..67d6549edfad 100644
> --- a/drivers/media/platform/vsp1/vsp1_drm.h
> +++ b/drivers/media/platform/vsp1/vsp1_drm.h
> @@ -48,6 +48,5 @@ static inline struct vsp1_drm *to_vsp1_drm(struct
> vsp1_pipeline *pipe)
>
> int vsp1_drm_init(struct vsp1_device *vsp1);
> void vsp1_drm_cleanup(struct vsp1_device *vsp1);
> -int vsp1_drm_create_links(struct vsp1_device *vsp1);
>
> #endif /* __VSP1_DRM_H__ */
> diff --git a/drivers/media/platform/vsp1/vsp1_drv.c
> b/drivers/media/platform/vsp1/vsp1_drv.c
> index 9b3a0790f92a..5a467b118a1c 100644
> --- a/drivers/media/platform/vsp1/vsp1_drv.c
> +++ b/drivers/media/platform/vsp1/vsp1_drv.c
> @@ -423,19 +423,15 @@ static int vsp1_create_entities(struct vsp1_device
> *vsp1)
> goto done;
> }
>
> - /* Create links. */
> - if (vsp1->info->uapi)
> - ret = vsp1_uapi_create_links(vsp1);
> - else
> - ret = vsp1_drm_create_links(vsp1);
> - if (ret < 0)
> - goto done;
> -
> /*
> - * Register subdev nodes if the userspace API is enabled or initialize
> - * the DRM pipeline otherwise.
> + * Create links and register subdev nodes if the userspace API is
> + * enabled or initialize the DRM pipeline otherwise.
> */
> if (vsp1->info->uapi) {
> + ret = vsp1_uapi_create_links(vsp1);
> + if (ret < 0)
> + goto done;
> +
> ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
> if (ret < 0)
> goto done;
>
