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/* exynos_drm_iommu.h
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* Authoer: Inki Dae <inki.dae@samsung.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef _EXYNOS_DRM_IOMMU_H_
#define _EXYNOS_DRM_IOMMU_H_
#define EXYNOS_DEV_ADDR_START 0x20000000
#define EXYNOS_DEV_ADDR_SIZE 0x40000000
#ifdef CONFIG_DRM_EXYNOS_IOMMU
int drm_create_iommu_mapping(struct drm_device *drm_dev);
void drm_release_iommu_mapping(struct drm_device *drm_dev);
int drm_iommu_attach_device(struct drm_device *drm_dev,
struct device *subdrv_dev);
void drm_iommu_detach_device(struct drm_device *dev_dev,
struct device *subdrv_dev);
static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
{
#ifdef CONFIG_ARM_DMA_USE_IOMMU
struct device *dev = drm_dev->dev;
return dev->archdata.mapping ? true : false;
#else
return false;
#endif
}
int drm_iommu_attach_device_if_possible(
struct exynos_drm_crtc *exynos_crtc, struct drm_device *drm_dev,
struct device *subdrv_dev);
#else
static inline int drm_create_iommu_mapping(struct drm_device *drm_dev)
{
return 0;
}
static inline void drm_release_iommu_mapping(struct drm_device *drm_dev)
{
}
static inline int drm_iommu_attach_device(struct drm_device *drm_dev,
struct device *subdrv_dev)
{
return 0;
}
static inline void drm_iommu_detach_device(struct drm_device *drm_dev,
struct device *subdrv_dev)
{
}
static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
{
return false;
}
static inline int drm_iommu_attach_device_if_possible(
struct exynos_drm_crtc *exynos_crtc, struct drm_device *drm_dev,
struct device *subdrv_dev)
{
return 0;
}
#endif
#endif
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