Merge tag 'v3.14.25' into backport/v3.14.24-ltsi-rc1+v3.14.25/snapshot-merge.wip

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / media / platform / vsp1 / vsp1_entity.c

diff --git a/drivers/media/platform/vsp1/vsp1_entity.c b/drivers/media/platform/vsp1/vsp1_entity.c
index ceac0d7..79af71d 100644 (file)
--- a/drivers/media/platform/vsp1/vsp1_entity.c
+++ b/drivers/media/platform/vsp1/vsp1_entity.c
@@ -22,6 +22,41 @@
 #include "vsp1_entity.h"
 #include "vsp1_video.h"
 
+bool vsp1_entity_is_streaming(struct vsp1_entity *entity)
+{
+       bool streaming;
+
+       mutex_lock(&entity->lock);
+       streaming = entity->streaming;
+       mutex_unlock(&entity->lock);
+
+       return streaming;
+}
+
+int vsp1_entity_set_streaming(struct vsp1_entity *entity, bool streaming)
+{
+       int ret;
+
+       mutex_lock(&entity->lock);
+       entity->streaming = streaming;
+       mutex_unlock(&entity->lock);
+
+       if (!streaming)
+               return 0;
+
+       if (!entity->subdev.ctrl_handler)
+               return 0;
+
+       ret = v4l2_ctrl_handler_setup(entity->subdev.ctrl_handler);
+       if (ret < 0) {
+               mutex_lock(&entity->lock);
+               entity->streaming = false;
+               mutex_unlock(&entity->lock);
+       }
+
+       return ret;
+}
+
 /* -----------------------------------------------------------------------------
  * V4L2 Subdevice Operations
  */
@@ -158,6 +193,8 @@ int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
        if (i == ARRAY_SIZE(vsp1_routes))
                return -EINVAL;
 
+       mutex_init(&entity->lock);
+
        entity->vsp1 = vsp1;
        entity->source_pad = num_pads - 1;
 
@@ -191,4 +228,6 @@ void vsp1_entity_destroy(struct vsp1_entity *entity)
        if (entity->subdev.ctrl_handler)
                v4l2_ctrl_handler_free(entity->subdev.ctrl_handler);
        media_entity_cleanup(&entity->subdev.entity);
+
+       mutex_destroy(&entity->lock);
 }