C++ (Cpp) fimc_lite_clear_event_counters примеры использования

Пример #1

static int fimc_lite_open(struct file *file)
{
	struct fimc_lite *fimc = video_drvdata(file);
	int ret;

	if (mutex_lock_interruptible(&fimc->lock))
		return -ERESTARTSYS;

	set_bit(ST_FLITE_IN_USE, &fimc->state);
	ret = pm_runtime_get_sync(&fimc->pdev->dev);
	if (ret < 0)
		goto done;

	ret = v4l2_fh_open(file);
	if (ret < 0)
		goto done;

	if (++fimc->ref_count == 1 && fimc->out_path == FIMC_IO_DMA) {
		ret = fimc_pipeline_call(fimc, open, &fimc->pipeline,
					 &fimc->vfd.entity, true);
		if (ret < 0) {
			pm_runtime_put_sync(&fimc->pdev->dev);
			fimc->ref_count--;
			v4l2_fh_release(file);
			clear_bit(ST_FLITE_IN_USE, &fimc->state);
		}

		fimc_lite_clear_event_counters(fimc);
	}
done:
	mutex_unlock(&fimc->lock);
	return ret;
}

Пример #2

Файл: fimc-lite.c Проект: 19Dan01/linux

static int fimc_lite_open(struct file *file)
{
	struct fimc_lite *fimc = video_drvdata(file);
	struct media_entity *me = &fimc->ve.vdev.entity;
	int ret;

	mutex_lock(&fimc->lock);
	if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) {
		ret = -EBUSY;
		goto unlock;
	}

	set_bit(ST_FLITE_IN_USE, &fimc->state);
	ret = pm_runtime_get_sync(&fimc->pdev->dev);
	if (ret < 0)
		goto unlock;

	ret = v4l2_fh_open(file);
	if (ret < 0)
		goto err_pm;

	if (!v4l2_fh_is_singular_file(file) ||
	    atomic_read(&fimc->out_path) != FIMC_IO_DMA)
		goto unlock;

	mutex_lock(&me->parent->graph_mutex);

	ret = fimc_pipeline_call(&fimc->ve, open, me, true);

	/* Mark video pipeline ending at this video node as in use. */
	if (ret == 0)
		me->use_count++;

	mutex_unlock(&me->parent->graph_mutex);

	if (!ret) {
		fimc_lite_clear_event_counters(fimc);
		goto unlock;
	}

	v4l2_fh_release(file);
err_pm:
	pm_runtime_put_sync(&fimc->pdev->dev);
	clear_bit(ST_FLITE_IN_USE, &fimc->state);
unlock:
	mutex_unlock(&fimc->lock);
	return ret;
}