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[media] vimc: common: Add vimc_pipeline_s_stream helper

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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>
This commit is contained in:
Helen Fornazier 2017-06-19 14:00:13 -03:00 committed by Mauro Carvalho Chehab
parent c149543ef4
commit bf5fb95c26
3 changed files with 45 additions and 27 deletions
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29
drivers/media/platform/vimc/vimc-capture.c
View File

@ -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);

32
drivers/media/platform/vimc/vimc-common.c
View File

@ -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,
};

11
drivers/media/platform/vimc/vimc-common.h
View File

@ -96,6 +96,17 @@ static inline void vimc_pads_cleanup(struct media_pad *pads)
kfree(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
*