static int fimc_lite_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct fimc_lite *fimc = video_drvdata(file);
struct media_entity *entity = &fimc->ve.vdev.entity;
int ret;
if (fimc_lite_active(fimc))
return -EBUSY;
ret = media_entity_pipeline_start(entity, &fimc->ve.pipe->mp);
if (ret < 0)
return ret;
ret = fimc_pipeline_validate(fimc);
if (ret < 0)
goto err_p_stop;
fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity);
ret = vb2_ioctl_streamon(file, priv, type);
if (!ret) {
fimc->streaming = true;
return ret;
}
err_p_stop:
media_entity_pipeline_stop(entity);
return 0;
}
static int stop_streaming(struct vb2_queue *q)
{
struct fimc_lite *fimc = q->drv_priv;
if (!fimc_lite_active(fimc))
return -EINVAL;
return fimc_lite_stop_capture(fimc, false);
}
static void stop_streaming(struct vb2_queue *q)
{
struct fimc_lite *fimc = q->drv_priv;
if (!fimc_lite_active(fimc))
return;
fimc_lite_stop_capture(fimc, false);
}
static int fimc_lite_suspend(struct device *dev)
{
struct fimc_lite *fimc = dev_get_drvdata(dev);
bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
int ret;
if (test_and_set_bit(ST_LPM, &fimc->state))
return 0;
ret = fimc_lite_stop_capture(fimc, suspend);
if (ret < 0 || !fimc_lite_active(fimc))
return ret;
return fimc_pipeline_call(fimc, close, &fimc->pipeline);
}
static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend)
{
unsigned long flags;
if (!fimc_lite_active(fimc))
return 0;
spin_lock_irqsave(&fimc->slock, flags);
set_bit(ST_FLITE_OFF, &fimc->state);
flite_hw_capture_stop(fimc);
spin_unlock_irqrestore(&fimc->slock, flags);
wait_event_timeout(fimc->irq_queue,
!test_bit(ST_FLITE_OFF, &fimc->state),
(2*HZ/10)); /* 200 ms */
return fimc_lite_reinit(fimc, suspend);
}
static int fimc_lite_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct fimc_lite *fimc = video_drvdata(file);
struct v4l2_subdev *sensor = fimc->pipeline.subdevs[IDX_SENSOR];
struct fimc_pipeline *p = &fimc->pipeline;
int ret;
if (fimc_lite_active(fimc))
return -EBUSY;
ret = media_entity_pipeline_start(&sensor->entity, p->m_pipeline);
if (ret < 0)
return ret;
ret = fimc_pipeline_validate(fimc);
if (ret) {
media_entity_pipeline_stop(&sensor->entity);
return ret;
}
return vb2_streamon(&fimc->vb_queue, type);
}
