C++ (Cpp) tegra_overlay_pin_window Examples

Example #1

static int tegra_overlay_flip(struct tegra_overlay_info *overlay,
			      struct tegra_overlay_flip_args *args,
			      struct nvmap_client *user_nvmap)
{
	struct tegra_overlay_flip_data *data;
	struct tegra_overlay_flip_win *flip_win;
	u32 syncpt_max;
	int i, err;

	if (WARN_ON(!overlay->ndev))
		return -EFAULT;

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (data == NULL) {
		dev_err(&overlay->ndev->dev,
			"can't allocate memory for flip\n");
		return -ENOMEM;
	}

	INIT_WORK(&data->work, tegra_overlay_flip_worker);
	data->overlay = overlay;

	for (i = 0; i < TEGRA_FB_FLIP_N_WINDOWS; i++) {
		flip_win = &data->win[i];

		memcpy(&flip_win->attr, &args->win[i], sizeof(flip_win->attr));

		if (flip_win->attr.index == -1)
			continue;

		err = tegra_overlay_pin_window(overlay, flip_win, user_nvmap);
		if (err < 0) {
			dev_err(&overlay->ndev->dev,
				"error setting window attributes\n");
			goto surf_err;
		}
	}

	syncpt_max = tegra_dc_incr_syncpt_max(overlay->dc);
	data->syncpt_max = syncpt_max;

	queue_work(overlay->flip_wq, &data->work);

	args->post_syncpt_val = syncpt_max;
	args->post_syncpt_id = tegra_dc_get_syncpt_id(overlay->dc);

	return 0;

surf_err:
	while (i--) {
		if (data->win[i].handle) {
			nvmap_unpin(overlay->overlay_nvmap,
				    data->win[i].handle);
			nvmap_free(overlay->overlay_nvmap,
				   data->win[i].handle);
		}
	}
	kfree(data);
	return err;
}

Example #2

static int tegra_overlay_flip(struct tegra_overlay_info *overlay,
			      struct tegra_overlay_flip_args *args,
			      struct nvmap_client *user_nvmap)
{
	struct tegra_overlay_flip_data *data;
	struct tegra_overlay_flip_win *flip_win;
	u32 syncpt_max;
	int i, err;

	if (WARN_ON(!overlay->ndev))
		return -EFAULT;

	mutex_lock(&tegra_flip_lock);
	if (!overlay->dc->enabled) {
		mutex_unlock(&tegra_flip_lock);
		return -EFAULT;
	}

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (data == NULL) {
		dev_err(&overlay->ndev->dev,
			"can't allocate memory for flip\n");
		mutex_unlock(&tegra_flip_lock);
		return -ENOMEM;
	}

	INIT_WORK(&data->work, tegra_overlay_flip_worker);
	data->overlay = overlay;
	data->flags = args->flags;

	for (i = 0; i < TEGRA_FB_FLIP_N_WINDOWS; i++) {
		flip_win = &data->win[i];

		memcpy(&flip_win->attr, &args->win[i], sizeof(flip_win->attr));

		if (flip_win->attr.index == -1)
			continue;

		err = tegra_overlay_pin_window(overlay, flip_win, user_nvmap);
		if (err < 0) {
			dev_err(&overlay->ndev->dev,
				"error setting window attributes\n");
			goto surf_err;
		}
	}

	syncpt_max = tegra_dc_incr_syncpt_max(overlay->dc);
	data->syncpt_max = syncpt_max;

	queue_work(overlay->flip_wq, &data->work);

	/*
	 * Before the queued flip_wq get scheduled, we set the EMC clock to the
	 * default value in order to do FLIP without glitch.
	 */
	tegra_dc_set_default_emc(overlay->dc);

	args->post_syncpt_val = syncpt_max;
	args->post_syncpt_id = tegra_dc_get_syncpt_id(overlay->dc);
	mutex_unlock(&tegra_flip_lock);

	return 0;

surf_err:
	while (i--) {
		if (data->win[i].handle) {
			nvmap_unpin(overlay->overlay_nvmap,
				    data->win[i].handle);
			nvmap_free(overlay->overlay_nvmap,
				   data->win[i].handle);
		}
	}
	kfree(data);
	mutex_unlock(&tegra_flip_lock);
	return err;
}