1. 根目录:
2. drivers
3. gpu
4. drm
5. exynos
6. exynos_drm_g2d.h

/*
 * Copyright (C) 2012 Samsung Electronics Co.Ltd
 * Authors: Joonyoung Shim <jy0922.shim@samsung.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundationr
 */

#ifdef CONFIG_DRM_EXYNOS_G2D
extern int exynos_g2d_get_ver_ioctl(struct drm_device *dev, void *data,
				    struct drm_file *file_priv);
extern int exynos_g2d_set_cmdlist_ioctl(struct drm_device *dev, void *data,
					struct drm_file *file_priv);
extern int exynos_g2d_exec_ioctl(struct drm_device *dev, void *data,
				 struct drm_file *file_priv);
#else
static inline int exynos_g2d_get_ver_ioctl(struct drm_device *dev, void *data,
					   struct drm_file *file_priv)
{
	return -ENODEV;
}

static inline int exynos_g2d_set_cmdlist_ioctl(struct drm_device *dev,
					       void *data,
					       struct drm_file *file_priv)
{
	return -ENODEV;
}

static inline int exynos_g2d_exec_ioctl(struct drm_device *dev, void *data,
					struct drm_file *file_priv)
{
	return -ENODEV;
}
#endif