static int fimc_md_link_notify(struct media_pad *source,
struct media_pad *sink, u32 flags)
{
struct fimc_lite *fimc_lite = NULL;
struct fimc_dev *fimc = NULL;
struct fimc_pipeline *pipeline;
struct v4l2_subdev *sd;
int ret = 0;
if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
return 0;
sd = media_entity_to_v4l2_subdev(sink->entity);
switch (sd->grp_id) {
case FLITE_GROUP_ID:
fimc_lite = v4l2_get_subdevdata(sd);
pipeline = &fimc_lite->pipeline;
break;
case FIMC_GROUP_ID:
fimc = v4l2_get_subdevdata(sd);
pipeline = &fimc->pipeline;
break;
default:
return 0;
}
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
ret = __fimc_pipeline_close(pipeline);
pipeline->subdevs[IDX_SENSOR] = NULL;
pipeline->subdevs[IDX_CSIS] = NULL;
if (fimc) {
mutex_lock(&fimc->lock);
fimc_ctrls_delete(fimc->vid_cap.ctx);
mutex_unlock(&fimc->lock);
}
return ret;
}
/*
* Link activation. Enable power of pipeline elements only if the
* pipeline is already in use, i.e. its video node is opened.
* Recreate the controls destroyed during the link deactivation.
*/
if (fimc) {
mutex_lock(&fimc->lock);
if (fimc->vid_cap.refcnt > 0) {
ret = __fimc_pipeline_open(pipeline,
source->entity, true);
if (!ret)
ret = fimc_capture_ctrls_create(fimc);
}
mutex_unlock(&fimc->lock);
} else {
mutex_lock(&fimc_lite->lock);
ret = __fimc_pipeline_open(pipeline, source->entity, true);
mutex_unlock(&fimc_lite->lock);
}
return ret ? -EPIPE : ret;
}
static int fimc_md_link_notify(struct media_pad *source,
struct media_pad *sink, u32 flags)
{
struct v4l2_subdev *sd;
struct fimc_dev *fimc;
int ret = 0;
if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
return 0;
sd = media_entity_to_v4l2_subdev(sink->entity);
fimc = v4l2_get_subdevdata(sd);
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
ret = __fimc_pipeline_shutdown(fimc);
fimc->pipeline.sensor = NULL;
fimc->pipeline.csis = NULL;
mutex_lock(&fimc->lock);
fimc_ctrls_delete(fimc->vid_cap.ctx);
mutex_unlock(&fimc->lock);
return ret;
}
mutex_lock(&fimc->lock);
if (fimc->vid_cap.refcnt > 0) {
ret = __fimc_pipeline_initialize(fimc, source->entity, true);
if (!ret)
ret = fimc_capture_ctrls_create(fimc);
}
mutex_unlock(&fimc->lock);
return ret ? -EPIPE : ret;
}
static int fimc_capture_open(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
int ret = -EBUSY;
dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
if (fimc_m2m_active(fimc))
goto unlock;
set_bit(ST_CAPT_BUSY, &fimc->state);
ret = pm_runtime_get_sync(&fimc->pdev->dev);
if (ret < 0)
goto unlock;
ret = v4l2_fh_open(file);
if (ret) {
pm_runtime_put(&fimc->pdev->dev);
goto unlock;
}
if (++fimc->vid_cap.refcnt == 1) {
ret = fimc_pipeline_call(fimc, open, &fimc->pipeline,
&fimc->vid_cap.vfd.entity, true);
if (!ret && !fimc->vid_cap.user_subdev_api)
ret = fimc_capture_set_default_format(fimc);
if (!ret)
ret = fimc_capture_ctrls_create(fimc);
if (ret < 0) {
clear_bit(ST_CAPT_BUSY, &fimc->state);
pm_runtime_put_sync(&fimc->pdev->dev);
fimc->vid_cap.refcnt--;
v4l2_fh_release(file);
}
}
unlock:
mutex_unlock(&fimc->lock);
return ret;
}
static int fimc_md_link_notify(struct media_pad *source,
struct media_pad *sink, u32 flags)
{
struct v4l2_subdev *sd;
struct fimc_dev *fimc;
int ret = 0;
if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
return 0;
sd = media_entity_to_v4l2_subdev(sink->entity);
fimc = v4l2_get_subdevdata(sd);
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
ret = __fimc_pipeline_shutdown(fimc);
fimc->pipeline.sensor = NULL;
fimc->pipeline.csis = NULL;
mutex_lock(&fimc->lock);
fimc_ctrls_delete(fimc->vid_cap.ctx);
mutex_unlock(&fimc->lock);
return ret;
}
/*
* Link activation. Enable power of pipeline elements only if the
* pipeline is already in use, i.e. its video node is opened.
* Recreate the controls destroyed during the link deactivation.
*/
mutex_lock(&fimc->lock);
if (fimc->vid_cap.refcnt > 0) {
ret = __fimc_pipeline_initialize(fimc, source->entity, true);
if (!ret)
ret = fimc_capture_ctrls_create(fimc);
}
mutex_unlock(&fimc->lock);
return ret ? -EPIPE : ret;
}
static int fimc_capture_open(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
int ret = v4l2_fh_open(file);
if (ret)
return ret;
dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
/* Return if the corresponding video mem2mem node is already opened. */
if (fimc_m2m_active(fimc))
return -EBUSY;
set_bit(ST_CAPT_BUSY, &fimc->state);
pm_runtime_get_sync(&fimc->pdev->dev);
if (++fimc->vid_cap.refcnt == 1) {
ret = fimc_pipeline_initialize(fimc,
&fimc->vid_cap.vfd->entity, true);
if (ret < 0) {
dev_err(&fimc->pdev->dev,
"Video pipeline initialization failed\n");
pm_runtime_put_sync(&fimc->pdev->dev);
fimc->vid_cap.refcnt--;
v4l2_fh_release(file);
clear_bit(ST_CAPT_BUSY, &fimc->state);
return ret;
}
ret = fimc_capture_ctrls_create(fimc);
if (!ret && !fimc->vid_cap.user_subdev_api)
ret = fimc_capture_set_default_format(fimc);
}
return ret;
}