1/* exynos_drm_iommu.h
 2 *
 3 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
 4 * Authoer: Inki Dae <inki.dae@samsung.com>
 5 *
 6 * This program is free software; you can redistribute  it and/or modify it
 7 * under  the terms of  the GNU General  Public License as published by the
 8 * Free Software Foundation;  either version 2 of the  License, or (at your
 9 * option) any later version.
10 */
11
12#ifndef _EXYNOS_DRM_IOMMU_H_
13#define _EXYNOS_DRM_IOMMU_H_
14
15#define EXYNOS_DEV_ADDR_START	0x20000000
16#define EXYNOS_DEV_ADDR_SIZE	0x40000000
17
18#ifdef CONFIG_DRM_EXYNOS_IOMMU
19
20int drm_create_iommu_mapping(struct drm_device *drm_dev);
21
22void drm_release_iommu_mapping(struct drm_device *drm_dev);
23
24int drm_iommu_attach_device(struct drm_device *drm_dev,
25				struct device *subdrv_dev);
26
27void drm_iommu_detach_device(struct drm_device *dev_dev,
28				struct device *subdrv_dev);
29
30static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
31{
32	struct exynos_drm_private *priv = drm_dev->dev_private;
33
34	return priv->mapping ? true : false;
35}
36
37#else
38
39static inline int drm_create_iommu_mapping(struct drm_device *drm_dev)
40{
41	return 0;
42}
43
44static inline void drm_release_iommu_mapping(struct drm_device *drm_dev)
45{
46}
47
48static inline int drm_iommu_attach_device(struct drm_device *drm_dev,
49						struct device *subdrv_dev)
50{
51	return 0;
52}
53
54static inline void drm_iommu_detach_device(struct drm_device *drm_dev,
55						struct device *subdrv_dev)
56{
57}
58
59static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
60{
61	return false;
62}
63
64#endif
65#endif