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authorHelen Fornazier <helen.koike@collabora.com>2017-06-19 14:00:13 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2017-06-23 09:03:37 -0300
commitbf5fb95c261de259e912e49973c66347a0a5b3d3 (patch)
treeaa82d288682f0c3b58ab9ae938e96c67ababb387 /drivers/media
parentc149543ef46e3dcc80280a4cc9fbcd05294d3c58 (diff)
[media] vimc: common: Add vimc_pipeline_s_stream helper
Move the vimc_cap_pipeline_s_stream from the vimc-cap.c to vimc-common.c as this core will be reused by other subdevices to activate the stream in their directly connected nodes Signed-off-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/platform/vimc/vimc-capture.c29
-rw-r--r--drivers/media/platform/vimc/vimc-common.c32
-rw-r--r--drivers/media/platform/vimc/vimc-common.h11
3 files changed, 45 insertions, 27 deletions
diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
index 9adb06d7e13d..93f6a0916329 100644
--- a/drivers/media/platform/vimc/vimc-capture.c
+++ b/drivers/media/platform/vimc/vimc-capture.c
@@ -132,31 +132,6 @@ static void vimc_cap_return_all_buffers(struct vimc_cap_device *vcap,
spin_unlock(&vcap->qlock);
}
-static int vimc_cap_pipeline_s_stream(struct vimc_cap_device *vcap, int enable)
-{
- struct v4l2_subdev *sd;
- struct media_pad *pad;
- int ret;
-
- /* Start the stream in the subdevice direct connected */
- pad = media_entity_remote_pad(&vcap->vdev.entity.pads[0]);
-
- /*
- * if it is a raw node from vimc-core, there is nothing to activate
- * TODO: remove this when there are no more raw nodes in the
- * core and return error instead
- */
- if (pad->entity->obj_type == MEDIA_ENTITY_TYPE_BASE)
- return 0;
-
- sd = media_entity_to_v4l2_subdev(pad->entity);
- ret = v4l2_subdev_call(sd, video, s_stream, enable);
- if (ret && ret != -ENOIOCTLCMD)
- return ret;
-
- return 0;
-}
-
static int vimc_cap_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct vimc_cap_device *vcap = vb2_get_drv_priv(vq);
@@ -173,7 +148,7 @@ static int vimc_cap_start_streaming(struct vb2_queue *vq, unsigned int count)
}
/* Enable streaming from the pipe */
- ret = vimc_cap_pipeline_s_stream(vcap, 1);
+ ret = vimc_pipeline_s_stream(&vcap->vdev.entity, 1);
if (ret) {
media_pipeline_stop(entity);
vimc_cap_return_all_buffers(vcap, VB2_BUF_STATE_QUEUED);
@@ -192,7 +167,7 @@ static void vimc_cap_stop_streaming(struct vb2_queue *vq)
struct vimc_cap_device *vcap = vb2_get_drv_priv(vq);
/* Disable streaming from the pipe */
- vimc_cap_pipeline_s_stream(vcap, 0);
+ vimc_pipeline_s_stream(&vcap->vdev.entity, 0);
/* Stop the media pipeline */
media_pipeline_stop(&vcap->vdev.entity);
diff --git a/drivers/media/platform/vimc/vimc-common.c b/drivers/media/platform/vimc/vimc-common.c
index 3afbabd739a5..f809a9d756b9 100644
--- a/drivers/media/platform/vimc/vimc-common.c
+++ b/drivers/media/platform/vimc/vimc-common.c
@@ -220,6 +220,38 @@ struct media_pad *vimc_pads_init(u16 num_pads, const unsigned long *pads_flag)
return pads;
}
+int vimc_pipeline_s_stream(struct media_entity *ent, int enable)
+{
+ struct v4l2_subdev *sd;
+ struct media_pad *pad;
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < ent->num_pads; i++) {
+ if (ent->pads[i].flags & MEDIA_PAD_FL_SOURCE)
+ continue;
+
+ /* Start the stream in the subdevice direct connected */
+ pad = media_entity_remote_pad(&ent->pads[i]);
+
+ /*
+ * if this is a raw node from vimc-core, then there is
+ * nothing to activate
+ * TODO: remove this when there are no more raw nodes in the
+ * core and return error instead
+ */
+ if (pad->entity->obj_type == MEDIA_ENTITY_TYPE_BASE)
+ continue;
+
+ sd = media_entity_to_v4l2_subdev(pad->entity);
+ ret = v4l2_subdev_call(sd, video, s_stream, enable);
+ if (ret && ret != -ENOIOCTLCMD)
+ return ret;
+ }
+
+ return 0;
+}
+
static const struct media_entity_operations vimc_ent_sd_mops = {
.link_validate = v4l2_subdev_link_validate,
};
diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
index 9ec361c8d7e4..73e7e9479956 100644
--- a/drivers/media/platform/vimc/vimc-common.h
+++ b/drivers/media/platform/vimc/vimc-common.h
@@ -97,6 +97,17 @@ static inline void vimc_pads_cleanup(struct media_pad *pads)
}
/**
+ * vimc_pipeline_s_stream - start stream through the pipeline
+ *
+ * @ent: the pointer to struct media_entity for the node
+ * @enable: 1 to start the stream and 0 to stop
+ *
+ * Helper function to call the s_stream of the subdevices connected
+ * in all the sink pads of the entity
+ */
+int vimc_pipeline_s_stream(struct media_entity *ent, int enable);
+
+/**
* vimc_pix_map_by_code - get vimc_pix_map struct by media bus code
*
* @code: media bus format code defined by MEDIA_BUS_FMT_* macros