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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 VeriSilicon Holdings Co., Ltd.
*/
#ifndef __VS_DRV_H__
#define __VS_DRV_H__
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/version.h>
#include <drm/drm_gem.h>
#if KERNEL_VERSION(5, 5, 0) > LINUX_VERSION_CODE
#include <drm/drmP.h>
#endif
#include "vs_plane.h"
#ifdef CONFIG_VERISILICON_MMU
#include "vs_dc_mmu.h"
#endif
/*
*
* @dma_dev: device for DMA API.
* - use the first attached device if support iommu
else use drm device (only contiguous buffer support)
* @domain: iommu domain for DRM.
* - all DC IOMMU share same domain to reduce mapping
* @pitch_alignment: buffer pitch alignment required by sub-devices.
*
*/
struct vs_drm_private {
struct device *dma_dev;
struct iommu_domain *domain;
#ifdef CONFIG_VERISILICON_MMU
dc_mmu * mmu;
#endif
unsigned int pitch_alignment;
};
int vs_drm_iommu_attach_device(struct drm_device *drm_dev,
struct device *dev);
void vs_drm_iommu_detach_device(struct drm_device *drm_dev,
struct device *dev);
void vs_drm_update_pitch_alignment(struct drm_device *drm_dev,
unsigned int alignment);
static inline struct device *to_dma_dev(struct drm_device *dev)
{
struct vs_drm_private *priv = dev->dev_private;
return priv->dma_dev;
}
static inline bool is_iommu_enabled(struct drm_device *dev)
{
struct vs_drm_private *priv = dev->dev_private;
return priv->domain != NULL ? true : false;
}
#ifdef CONFIG_STARFIVE_INNO_HDMI
extern struct platform_driver inno_hdmi_driver;
#endif
#endif /* __VS_DRV_H__ */
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